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CN115158472A - Connecting structure of rear side wall assembly and rear car body assembly of car and car - Google Patents

Connecting structure of rear side wall assembly and rear car body assembly of car and car Download PDF

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Publication number
CN115158472A
CN115158472A CN202210778322.3A CN202210778322A CN115158472A CN 115158472 A CN115158472 A CN 115158472A CN 202210778322 A CN202210778322 A CN 202210778322A CN 115158472 A CN115158472 A CN 115158472A
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CN
China
Prior art keywords
plate
side wall
assembly
vehicle body
hole
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Granted
Application number
CN202210778322.3A
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Chinese (zh)
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CN115158472B (en
Inventor
张勇
冉建亮
赵丰良
汪晓菊
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Chongqing Changan Automobile Co Ltd
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Chongqing Changan Automobile Co Ltd
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Priority to CN202210778322.3A priority Critical patent/CN115158472B/en
Publication of CN115158472A publication Critical patent/CN115158472A/en
Application granted granted Critical
Publication of CN115158472B publication Critical patent/CN115158472B/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/02—Side panels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/20—Floors or bottom sub-units
    • B62D25/2009—Floors or bottom sub-units in connection with other superstructure subunits
    • B62D25/2036—Floors or bottom sub-units in connection with other superstructure subunits the subunits being side panels, sills or pillars

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

The invention relates to the technical field of automobile bodies, in particular to a connecting structure of a rear side wall assembly and a rear automobile body assembly of a car and a vehicle, which comprises the rear automobile body assembly and the rear side wall assembly, wherein the rear automobile body assembly and the rear side wall assembly form an integral structure by adopting a connecting mode of spot welding, structural glue and screw joint; the rear vehicle body assembly comprises a rear vehicle body, the front part of the rear vehicle body is provided with a front reinforcing cavity, and the rear part of the rear vehicle body is provided with a rear reinforcing cavity; the rear side wall assembly comprises a rear side wall inner plate assembly, an object placing plate edge plate assembly and a side wall rear supporting piece; the object placing plate edge plate assembly is fixedly connected with the rear vehicle body at the front part reinforcing cavity and the rear part reinforcing cavity to form a first annular cavity structure and a second annular cavity structure. The invention solves the technical problem that the integral performance requirement of the vehicle body is difficult to guarantee due to the influence on the modeling design and the integral structure design caused by the limited height of the wheel arch boundary caused by the space limitation requirement on the welding channel by the connection modes such as spot welding, FDS hot melting self tapping screw connection and the like in the prior art.

Description

Connecting structure of rear side wall assembly and rear car body assembly of car and car
Technical Field
The invention relates to the technical field of automobile bodies, in particular to a connecting structure of a rear side wall assembly and a rear automobile body assembly of a car and a vehicle.
Background
With the rapid development of the vehicle industry, various requirements of people on vehicles are higher and higher; the comfort, safety and economy of the vehicle become the most important indexes for customers to purchase the vehicle, especially the safety of the vehicle.
In the structural design of a vehicle, the structure and the connection of a rear side wall assembly and a rear vehicle body assembly are important positions for ensuring the structural integrity of the rear part of a vehicle body, are key structures for ensuring the integral bending rigidity of the vehicle body, and are also important structures for ensuring the rigidity of a rear auxiliary frame attachment point and the NVH performance (noise, vibration and harshness performance).
In the current conventional automobile structure design, aiming at a common all-steel automobile body, a rear side wall assembly and a rear automobile body assembly usually adopt spot welding and CO 2 A connection mode of shielded welding; aiming at a common steel-aluminum hybrid vehicle body, the rear side wall assembly and the rear vehicle body assembly are generally connected in a spot welding mode, an FDS hot melting self-tapping screw connection mode, an SPR self-punching riveting mode and the like. For example, the patent with the grant bulletin number of CN203958323U discloses an automobile side wall assembly and rear wall assembly connecting structure, including side wall assembly and rear wall assembly below the rear partition assembly, even there is rear fender closing plate structure between side wall assembly and the rear wall assembly, rear fender closing plate structure includes the rear partition extension plate that the top transversely extends and the side wall extension plate that the bottom longitudinally extends, rear partition extension plate is connected with the rear partition assembly, side wall extension plate front side is connected with side wall assembly rear portion, side wall extension plate rear side is connected with the rear wall assembly, side wall extension plate bottom extends to side wall assembly rear portion bottom. The utility model discloses a back fender shrouding structure makes the side wall assembly, and back encloses assembly and back bounding wall assembly and links into a whole for the junction of back fender back veneer and back tail lamp base plate and back bounding wall assembly is airtight structural style, has solved the defect that side wall assembly rear portion and back bounding wall assembly are connected the weakness, thereby has improved automobile body intensity and rigidity, has improved the back of vehicle and has bumped the performance.
However, in the prior art, due to the fact that space limitation requirements are imposed on a welding channel by adopting connection modes such as spot welding, FDS hot melting self-tapping screw connection and the like, the wheel arch boundary height is limited, and the design of modeling is influenced; in addition, the design of the overall structure is also affected, and the overall performance requirements of the vehicle body are difficult to guarantee.
Disclosure of Invention
In view of the above, the invention aims to provide a connecting structure of a rear side wall assembly and a rear vehicle body assembly of a car and a vehicle, and solves the technical problem that in the prior art, due to the fact that the connecting modes such as spot welding, FDS hot melting self-tapping screw connection and the like have space limitation requirements on a welding channel, the height of a wheel arch boundary is limited, the modeling design and the integral structure design are influenced, and the integral performance requirement of a vehicle body is difficult to guarantee.
The invention solves the technical problems by the following technical means:
a connecting structure of a rear side wall assembly and a rear vehicle body assembly of a car comprises the rear vehicle body assembly and the rear side wall assembly, wherein the rear vehicle body assembly and the rear side wall assembly form an integral structure by adopting a connecting mode of spot welding, structural glue and screw connection; the rear vehicle body assembly comprises a rear vehicle body, the front end of the rear vehicle body is fixedly connected with a rear vehicle body front connecting plate, the rear end of the rear vehicle body is fixedly connected with a rear vehicle body rear connecting plate, the front part of the rear vehicle body is provided with a front reinforcing cavity, and the rear part of the rear vehicle body is provided with a rear reinforcing cavity; the rear side wall assembly comprises a rear side wall inner plate assembly, a storage plate edge plate assembly and a side wall rear supporting piece, wherein the rear side wall inner plate assembly and the side wall rear supporting piece are arranged on two sides of the storage plate edge plate assembly, the rear side wall inner plate assembly is fixedly connected with a rear vehicle body front connecting plate, and the side wall rear supporting piece is fixedly connected with a rear vehicle body rear connecting plate; the object placing plate side plate assembly is fixedly connected with the rear vehicle body at the front part reinforcing cavity and the rear part reinforcing cavity respectively to form a rear side wall inner plate assembly, and the object placing plate side plate assembly and the side wall rear part supporting piece are fixedly connected to form a first annular cavity structure at the front part and a second annular cavity structure at the rear part.
The principle of the scheme is as follows: the object placing plate edge plate assembly is fixedly connected with the front reinforcing cavity structure of the rear vehicle body to form a front cavity structure of the rear side wall assembly, a first force transmission path is formed, and the object placing plate edge plate assembly, the rear side wall assembly and the rear vehicle body assembly form a first annular cavity structure at the rear part of the vehicle body. The rear reinforced cavity structure of the rear vehicle body is fixedly connected to form a rear cavity structure of the rear side wall assembly, a second force transmission path is formed, and a second annular cavity structure is formed at the rear part of the vehicle body together with the object placing plate edge plate assembly, the rear side wall assembly and the rear vehicle body assembly. The two annular cavity structures form a part of the integral frame at the rear part of the vehicle body, so that the bending rigidity of the vehicle body, the rigidity of the rear auxiliary frame attachment point and the NVH performance are greatly improved.
In addition, the connecting structure of the rear side wall assembly and the rear vehicle body assembly is comprehensively implemented by adopting three connecting modes of spot welding, structural adhesive and screw joint, the problem that the modeling wheel arch boundary is changed due to insufficient welding space of full spot welding connection is effectively solved, the influence of engineering on modeling is reduced, and the perfect design of modeling is facilitated; meanwhile, two force transmission paths of a front support and a rear support are formed structurally, and the bending rigidity of the whole vehicle body, the rigidity of a rear auxiliary frame attachment point and the NVH performance are greatly improved.
Further, a first rear body mounting hole connected with the rear side wall inner plate assembly, a second rear body mounting hole connected with the rear side wall inner plate assembly and the object placing plate edge plate assembly, a third rear body mounting hole connected with the object placing plate edge plate assembly, a fourth rear body mounting hole connected with the rear side wall inner plate assembly and the side wall rear supporting piece, and a fifth rear body mounting hole connected with the side wall rear supporting piece are formed in the rear body; and a sixth rear body mounting hole connected with the rear side wall inner plate assembly. The arrangement of the first rear body mounting hole, the second rear body mounting hole, the third rear body mounting hole, the fourth rear body mounting hole, the fifth rear body mounting hole and the sixth rear body mounting hole facilitates the fixed connection of the rear side wall assembly and the rear body assembly by adopting sealing bolts, and avoids the connection in a spot welding or FDS mode.
Furthermore, a first rear body overlapping surface and a first rear side wall assembly overlapping surface are arranged on two sides of the front connecting plate of the rear body respectively, a main front connecting plate positioning hole and a secondary front connecting plate positioning hole are formed in two ends of the first rear side wall assembly overlapping surface respectively, and the first rear body overlapping surface and the rear body are connected into a whole through SPR self-piercing riveting and a section of structural adhesive. So, the connection plate adopts SPR from dashing to rivet and structural adhesive to connect into whole before the back automobile body with the back automobile body, can solve the unable spot welding connection's of steel-aluminum mixture problem, guarantees structural connection's rigidity intensity simultaneously.
Furthermore, a rear connecting plate mounting through hole connected with the rear side wall inner plate assembly is formed in the rear connecting plate of the rear vehicle body, a notch is formed in the rear connecting plate of the rear vehicle body, a first rear connecting plate mounting hole connected with the rear side wall inner plate assembly and the side wall rear support piece and a second rear connecting plate mounting hole connected with the rear side wall inner plate assembly and the side wall rear support piece are respectively formed in the rear connecting plate of the rear vehicle body positioned on two sides of the notch, and a main rear connecting plate positioning hole is formed in the rear connecting plate of the rear vehicle body between the rear connecting plate mounting through hole and the first rear connecting plate mounting hole; a second rear side wall assembly overlap joint surface and a second rear vehicle body overlap joint surface are respectively arranged on two sides of the rear vehicle body rear connecting plate, and a second rear connecting plate positioning hole is formed in the rear side wall assembly overlap joint surface; and the second lapping surface of the rear vehicle body and the rear vehicle body are connected into a whole by SPR self-piercing riveting and a section of structural adhesive. So, the connection board is connected into whole with the back automobile body adoption SPR from dashing riveting and structural adhesive behind the automobile body, can solve the unable spot welding connection's of steel-aluminum mixture problem, guarantees structural connection's rigidity intensity simultaneously.
Further, the rear car body is integrally cast by using aluminum alloy plates, and the front connecting plate of the rear car body and the rear connecting plate of the rear car body are stamped by galvanized steel plates with the thickness of 0.9-1.1 mm. The rear car body is formed by die casting through an integrated die casting process, so that a plurality of existing parts are reduced to a die casting, the manufacturing efficiency is greatly improved, and the production cost is reduced; the front connecting plate of the rear car body and the rear connecting plate of the rear car body adopt galvanized plates, so that the steel plate and the aluminum alloy can be effectively prevented from generating chemical reaction to cause structural corrosion, and a good corrosion prevention effect is achieved.
Further, the rear side wall inner plate assembly comprises a rear wheel packet outer plate, a rear wheel packet inner plate, a side wall rear upper inner plate connecting plate and a top cover rear cross beam supporting plate, wherein the rear wheel packet inner plate, the side wall rear upper inner plate connecting plate and the top cover rear cross beam supporting plate are fixedly connected to the rear wheel packet outer plate; the rear wheel cover inner plate and the upper inner plate connecting plate are arranged on two sides of the side wall rear upper inner plate, and the top cover rear cross beam supporting plate is arranged on the side wall rear upper inner plate connecting plate; the rear wheel package inner plate is fixedly connected with the rear vehicle body assembly, the object placing plate edge plate assembly and the side wall rear supporting piece.
Furthermore, an inner wrapping plate mounting through hole connected with a rear vehicle body is formed in the rear wheel wrapping inner plate, an inner wrapping plate lap surface connected with the rear vehicle body assembly, the object placing plate edge plate assembly and the side wall rear supporting piece is arranged on the lower side of the rear wheel wrapping inner plate, an inner wrapping plate nut hole I connected with the rear vehicle body and the object placing plate edge plate assembly is formed in the middle of the inner wrapping plate lap surface, an inner wrapping plate nut hole II connected with the rear vehicle body and the side wall rear supporting piece, an inner wrapping plate nut hole III and an inner wrapping plate nut hole IV connected with the rear vehicle body are formed in the inner wrapping plate lap surface; the two sides of the rear wheel package inner plate are respectively provided with a main package inner plate positioning hole and a secondary package inner plate positioning hole; welding square nuts are welded at the first inner plate-wrapped nut hole, the second inner plate-wrapped nut hole, the third inner plate-wrapped nut hole and the fourth inner plate-wrapped nut hole respectively, and the welding square nuts form an installation point structure.
Further, the centers of the first inner plate nut hole, the first object placing plate mounting through hole and the second rear vehicle body mounting hole are aligned, and the rear side wall assembly and the rear vehicle body assembly are fixedly connected by adopting an M8 sealing bolt; and the hole centers of the first inner plate nut hole, the third object placing plate mounting through hole and the second rear vehicle body mounting hole are aligned, and the rear side wall assembly and the rear vehicle body assembly are fixedly connected by adopting a sealing bolt.
Further, the object placing plate edge plate assembly comprises an object placing plate front lower supporting plate, an object placing plate rear lower supporting plate, an object placing plate edge plate front connecting plate and an object placing plate edge plate; put behind the thing board bottom suspension fagging and put the both sides of thing board front connection board of thing board front suspension fagging setting, put thing board sideboard and put behind the thing board bottom suspension fagging fixed connection.
Furthermore, the end part of the front lower support plate of the object placing plate is provided with a first object placing plate mounting through hole connected with the rear vehicle body and the rear side wall inner plate assembly, a second object placing plate mounting through hole connected with the rear vehicle body, a first front lower support plate overlapping surface, a second front lower support plate overlapping surface, a third front lower support plate overlapping surface and a fourth front lower support plate overlapping surface which are connected with the rear side wall inner plate assembly, and the front lower support plate of the object placing plate is also provided with a main front lower support plate positioning hole and a secondary front lower support plate positioning hole; the rear lower support plate of the object placing plate is provided with a first rear lower support plate overlapping surface, a second rear lower support plate overlapping surface, a third rear lower support plate overlapping surface and a fourth rear lower support plate overlapping surface which are connected with the side wall inner plate assembly; and the lower supporting plate lapping surface III is fixedly connected with the rear lower supporting plate lapping surface II through spot welding.
Further, the front lower support plate of the object placing plate and the rear lower support plate of the object placing plate are connected to form a cavity structure; welding square nuts are welded in the first object placing plate nut hole and the second object placing plate nut hole, and the welding square nuts form a mounting point structure; the hole centers of the second object placing plate mounting hole, the second object placing plate nut hole and the third rear vehicle body mounting hole are aligned and fixedly connected with the same sealing bolt, so that a mounting structure for connecting the rear side wall assembly and the rear vehicle body assembly is formed; the first nut hole of the object placing plate is aligned with the center of the third mounting hole of the rear vehicle body, and the same sealing bolt is fixedly connected with the first nut hole of the object placing plate, so that the mounting structure for connecting the rear side wall assembly and the rear vehicle body assembly is formed.
Furthermore, a first supporting piece lapping surface and a second supporting piece lapping surface which are fixedly connected with the rear side wall inner plate assembly are respectively arranged on two sides of the side wall rear supporting piece, and a third supporting piece lapping surface is arranged on one side, close to the object placing plate edge plate assembly, of the side wall rear supporting piece; the upper part of the side wall rear supporting piece is provided with a secondary supporting piece positioning hole, the middle part of the side wall rear supporting piece is provided with a main supporting piece positioning hole, the lower part of the side wall rear supporting piece is provided with a supporting piece nut hole connected with the rear car body, and a welding square nut is welded at the supporting piece nut hole and forms a mounting point structure with the welding square nut.
Furthermore, a first side plate front connecting plate lap joint surface, a second side plate front connecting plate lap joint surface and a third side plate front connecting plate lap joint surface are integrally formed at the edge of the side plate front connecting plate of the object placing plate, and a front connecting plate main positioning hole and a front connecting plate secondary positioning hole are formed at two ends of the side plate front connecting plate of the object placing plate; the edge of each storage plate side plate is provided with a first storage plate side plate overlapping surface, a second storage plate side plate overlapping surface, a third storage plate side plate overlapping surface and a fourth storage plate side plate overlapping surface; the third lapping surface of the front connecting plate of the side plate is connected with the fourth lapping surface of the front lower supporting plate through spot welding; the lap joint surface II of the front connecting plate of the side plate is connected with the lap joint surface III of the rear lower supporting plate and the lap joint surface I of the side plate of the object placing plate through spot welding to form an object placing plate side plate assembly.
Furthermore, the nut holes of the supporting piece are respectively aligned with the hole centers of the fifth rear vehicle body mounting hole, and the rear side wall assembly is fixedly connected with the rear vehicle body assembly through sealing bolts.
Further, the hole centers of the second inner plate-wrapped nut hole, the fourth rear vehicle body mounting hole and the second rear connecting plate mounting hole are aligned, and the rear side wall assembly is fixedly connected with the rear vehicle body assembly through a sealing bolt; the third inner plate-wrapped nut hole, the fourth rear vehicle body mounting hole and the first rear connecting plate mounting hole are aligned, and the rear side wall assembly is fixedly connected with the rear vehicle body assembly by adopting a sealing bolt; the fourth inner plate-wrapped nut hole, the sixth rear vehicle body mounting hole and the hole center of the rear connecting plate mounting through hole are aligned, and the rear side wall assembly is fixedly connected with the rear vehicle body assembly by adopting a sealing bolt; the hole centers of the inner plate covering mounting through holes and the rear connecting plate mounting through holes are aligned, and the rear side wall assembly and the rear vehicle body assembly are fixedly connected through sealing bolts.
Further, the lap joint surface of the front lower supporting plate and the lap joint surface of the rear lower supporting plate of the rear side wall inner plate assembly and the storage plate edge plate assembly are welded by 12-14 welding spots, and the lap joint surface of the support piece and the lap joint surface of the rear side wall inner plate assembly and the side wall rear support piece are welded by 10-12 welding spots at the lap joint surface I and the lap joint surface II of the support piece.
Further, a front cavity structure of the rear side wall inner plate assembly is formed by welding a first lap surface of the rear side wall inner plate assembly with a first front lower supporting plate, a second lap surface of the front lower supporting plate, a third lap surface of the front lower supporting plate, a first lap surface of the rear lower supporting plate, a fourth lap surface of the rear lower supporting plate, a first lap surface of a front connecting plate of a side plate, a second lap surface of a side plate of a storage plate and a third lap surface of a side plate of the storage plate through spot welding; the lap joint surface I of the rear side wall inner plate assembly and the support piece and the lap joint surface II of the support piece are welded by 10-12 spot welding, and the lap joint surface III of the support piece and the lap joint surface IV of the edge plate of the object placing plate are welded by 5-7 spot welding, so that a rear cavity structure of the rear side wall inner plate assembly is formed.
Further, the rear vehicle body assembly and the rear side wall assembly are connected with one section of structural adhesive at the lap joint surface of the rear side wall assembly of the front connecting plate of the rear vehicle body by adopting 9-11 spot welding; the rear car body assembly and the rear side wall assembly are connected with a second lap joint surface of the rear side wall assembly of the rear car body rear connecting plate by 3-5 spot welds and a section of structural adhesive; the rear car body assembly and the rear side wall assembly are connected with a second rear car body lap joint surface of the rear car body rear connecting plate by adopting a section of structural adhesive. The combined connection mode of spot welding and structural adhesive is adopted, so that the problem of insufficient welding space of all spot welding can be solved.
The invention also discloses a vehicle which adopts the combined structure of the rear side wall assembly and the rear vehicle body assembly of the sedan in any scheme.
The vehicle comprises a fuel vehicle or an electric vehicle.
The invention relates to a connecting structure of a rear side wall assembly and a rear vehicle body assembly of a car and a vehicle, which have the following advantages:
1. the article placing plate edge plate assembly is fixedly connected between the side wall inner plate assembly and the side wall rear supporting piece, so that the article placing plate edge plate assembly and the first annular cavity structure at the front part and the second annular cavity structure at the rear part are fixedly connected by the rear side wall inner plate assembly and the article placing plate edge plate assembly as well as the side wall rear supporting piece; the front part of the rear vehicle body is provided with a front reinforcing cavity, the rear part of the rear vehicle body is provided with a rear reinforcing cavity, and the object placing plate edge plate assembly is fixedly connected with the front reinforcing cavity and the rear reinforcing cavity on the rear vehicle body, so that two force transmission paths of a front support and a rear support are formed, and the bending rigidity of the whole vehicle body, the rigidity of a rear auxiliary frame attachment point and the NVH performance are greatly improved.
2. The rear side wall assembly and the rear vehicle body assembly are comprehensively implemented by adopting three connection modes of spot welding, structural adhesive and screw connection, so that the problem that the wheel arch boundary height is limited due to insufficient welding space of full-spot welding connection can be effectively solved, the influence of engineering on the shape is reduced, and the perfect design of the shape is facilitated; meanwhile, the rigidity and the strength of connection can be improved, and the performance requirement of the vehicle body is effectively guaranteed.
Drawings
FIG. 1 is a schematic view (left side) of a rear side panel assembly and rear body assembly attachment structure of the present invention;
FIG. 2 is an elevation view of the quarter assembly and rear body assembly attachment structure of the present invention;
FIG. 3 is a vehicle interior side view (left side) of the structure for connecting the quarter panel assembly and the rear body assembly of the present invention;
FIG. 4 is an outside view (left side) of the vehicle of the structure for connecting the quarter panel assembly and the rear vehicle body assembly of the present invention;
FIG. 5 is a schematic view of the connection structure of the rear side wall inner panel assembly, the storage panel edge panel assembly and the side wall rear support member according to the present invention;
FIG. 6 is a schematic structural view of the rear vehicle body and the connecting plate of the present invention;
FIG. 7 is a rear body structure schematic of the present invention;
FIG. 8 is a schematic view of a rear body front connector structure of the present invention;
FIG. 9 is a schematic structural view of a rear vehicle body rear connecting plate of the present invention;
FIG. 10 is a schematic structural view of a quarter inner panel assembly of the present invention;
FIG. 11 is a schematic structural view of an inner plate of the rear wheel package of the present invention;
FIG. 12 is a schematic view of the side plate assembly of the storage tray of the present invention;
FIG. 13 is a schematic view of the front and lower supporting plates of the shelf of the present invention;
FIG. 14 is a schematic view of the rear lower support structure of the shelf panel of the present invention;
FIG. 15 is a schematic view of the front connection plate of the side plate of the shelf board of the present invention;
FIG. 16 is a schematic view of the edge panel of the storage board of the present invention;
FIG. 17 is a schematic structural view of a side gusset rear support member of the present invention.
Wherein each reference number in each figure is represented as:
1-a rear vehicle body assembly;
11-a rear vehicle body, 111-a front reinforcing cavity, 112-a rear reinforcing cavity, 113-a rear vehicle body mounting hole I, 114-a rear vehicle body mounting hole II, 115-a rear vehicle body mounting hole III, 116-a rear vehicle body mounting hole IV, 117-a rear vehicle body mounting hole V, 118-a rear vehicle body mounting hole VI;
12-rear vehicle body front connecting plate, 121-main front connecting plate positioning hole, 122-secondary front connecting plate positioning hole, 123-rear vehicle body lap joint surface I; 124-lap joint surface of the rear side wall assembly;
13-rear body rear connecting plate, 131-rear connecting plate mounting via hole, 132-main rear connecting plate positioning hole, 133-rear connecting plate mounting hole one, 134-rear connecting plate mounting hole two, 135-rear side wall assembly overlapping surface two, 136-secondary rear connecting plate positioning hole, 137-rear body overlapping surface two;
2-rear side wall assembly;
21-rear side wall inner plate assembly
211-inner plate of rear wheel, 2111-inner plate of bag is installed with through hole; 2112-bag inner plate faying surface; 2113. 2114-first inner plate wrapping nut hole, 2115-second inner plate wrapping nut hole, 2116-third inner plate wrapping nut hole, 2117-fourth inner plate wrapping nut hole, 2118-main inner plate wrapping positioning hole and 2119-secondary inner plate wrapping positioning hole;
212-rear wheel wrap outer plate;
213-side wall rear upper inner plate;
214-side-body rear upper inner plate connecting plate;
215-roof rear beam support plate;
22-storage board edge board assembly;
221-object plate front lower support plate, 2211-object plate mounting through hole I, 2212-object plate mounting through hole II, 2213-front lower support plate overlapping surface I, 2214-front lower support plate overlapping surface II, 2215-front lower support plate main positioning hole, 2216-front lower support plate overlapping surface III, 2217-front lower support plate overlapping surface IV and 2218-front lower support plate secondary positioning hole;
222-rear lower support plate of object placing plate, 2221-first lap joint surface of rear lower support plate, 2222-third installation hole of object placing plate, 2223-first nut hole of object placing plate, 2224-second nut hole of object placing plate; 2225-a second lapping surface of the rear lower support plate, 2226-a secondary positioning hole of the rear lower support plate, 2227-a third lapping surface of the rear lower support plate, 2228-a fourth lapping surface of the rear lower support plate, and 2229-a main positioning hole of the rear lower support plate;
223-front connecting plate of edge plate of object placing plate;
2231-a first lapping surface of a front connecting plate of the side plate, 2232-a secondary positioning hole of the front connecting plate, 2233-a second lapping surface of the front connecting plate of the side plate, 2234-a main positioning hole of the front connecting plate and 2235-a third lapping surface of the front connecting plate of the side plate;
224-shelf board side boards;
2241, first lapping surface of a board edge plate, 2242, a main positioning hole of the board edge plate, 2243, second lapping surface of the board edge plate, 2244, third lapping surface of the board edge plate, 2245, fourth lapping surface of the board edge plate, 2246, and a secondary positioning hole of the board edge plate;
23-side body rear support;
231-first support piece overlapping surface, 235-second support piece overlapping surface, 232-third support piece overlapping surface, 233-secondary support piece positioning hole, 234-main support piece positioning hole, 236, 237-support piece nut hole;
3-M8 sealing bolts; 4-spot welding; 5-SPR self-piercing riveting; 6-a first force transmission path; 7-a second force transfer path; 8-M8 welding a square nut; 9-structural adhesive; 6-M8 welding a square nut; 7-structural adhesive.
Detailed Description
The invention will be described in detail below with reference to the following figures and specific examples:
the following description is given for illustrative embodiments of the invention with reference to specific examples, and it is to be understood that the invention is not limited to the details of the embodiments disclosed herein. It should be noted that the drawings provided in the following embodiments are only for illustrative purposes, are schematic drawings rather than actual drawings, and are not to be construed as limiting the invention, and in order to better illustrate the embodiments of the invention, some components in the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the drawings, it is only for convenience of description and simplicity of description, but does not indicate or imply that the indicated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limiting the present invention, and those skilled in the art can understand the specific meanings of the terms according to specific situations.
Examples 1,
The embodiment is a connecting structure of a rear side wall assembly and a rear car body assembly of a car, and particularly, as shown in fig. 1-17, the connecting structure comprises a rear car body assembly 1 and a rear side wall assembly 2, wherein the rear car body assembly 1 comprises a rear car body 11, the front end of the rear car body 11 is fixedly connected with a rear car body front connecting plate 12 in a mode of SPR self-piercing riveting and structural adhesive connection, and the rear end of the rear car body 11 is fixedly connected with a rear car body rear connecting plate 13 in a mode of SPR self-piercing riveting and structural adhesive connection; as shown in fig. 7, a front reinforcing cavity 111 is integrally press-formed in a front portion of the rear vehicle body 11, and a rear reinforcing cavity 112 is integrally press-formed in a rear portion.
In this embodiment, as shown in fig. 3 and 5, the rear side wall assembly 2 includes a rear side wall inner panel assembly 21, a storage board side panel assembly 22, and a side wall rear support 23, the rear side wall inner panel assembly 21 and the side wall rear support 23 are disposed at two sides of the storage board side panel assembly 22, the rear side wall inner panel assembly 21 is fixedly connected to the rear vehicle body front connecting plate 12, and the side wall rear support 23 is fixedly connected to the rear vehicle body rear connecting plate 13; the object placing plate edge assembly 22 is fixedly connected with the rear vehicle body 11 at the front reinforcing cavity 111 and the rear reinforcing cavity 112 respectively to form a rear side wall inner plate assembly 21, and the object placing plate edge assembly 22 and the side wall rear supporting piece 23 are fixedly connected to form a first annular cavity structure at the front part and a second annular cavity structure at the rear part. The first annular cavity structure and the second annular cavity structure at the rear part form two force transmission paths to form a part of an integral frame at the rear part of the vehicle body, so that the bending rigidity of the vehicle body, the rigidity of a rear auxiliary frame attachment point and the NVH performance can be improved.
As shown in fig. 7, in order to conveniently use the M8 sealing bolt 3 to fixedly connect the rear side wall assembly 2 with the rear vehicle body assembly 1, the rear vehicle body 11 of this embodiment is provided with a first rear vehicle body mounting hole 113 which is connected with the inner rear side wall plate assembly 21 and has a size of phi 15mm, a second rear vehicle body mounting hole 114 which is connected with the inner rear side wall plate assembly 21 and the object placing plate edge plate assembly 22 and has a size of phi 15mm, a second rear vehicle body mounting hole 115 which is connected with the object placing plate edge plate assembly 22 and has a size of phi 14mm, a fourth rear vehicle body mounting hole 116 which is connected with the inner rear side wall plate assembly 21 and the rear side wall supporting member 23 and has a size of phi 15mm, and a fifth rear vehicle body mounting hole 117 which is connected with the rear side wall supporting member 23 and has a size of phi 14 mm; and a sixth rear body mounting hole 118 which is connected with the rear side wall inner plate assembly 21 and has the size of phi 14 mm.
As shown in fig. 8, a first rear body overlapping surface 123 and a first rear side wall assembly overlapping surface 124 are respectively and integrally formed on two sides of the front rear body connecting plate 12, a main front connecting plate positioning hole 121 with the size of phi 10mm and a secondary front connecting plate positioning hole 122 with the size of phi 10mm are respectively formed at two ends of the first rear side wall assembly overlapping surface 124, and as shown in fig. 3, the first rear body overlapping surface 123 and the rear body 11 are integrally connected by adopting 10 SPR self-piercing rivets 5 and a section of structural adhesive 9.
As shown in fig. 9, a rear connecting plate mounting via hole 131 which is connected with the rear side wall inner plate assembly 21 and has a size of phi 14mm is formed in the rear connecting plate 13 of the rear vehicle body, a notch is formed in the rear connecting plate 13 of the rear vehicle body, a first rear connecting plate mounting hole 133 which is connected with the rear side wall inner plate assembly 21 and the side wall rear support 23 and has a size of phi 14mm and a second rear connecting plate mounting hole 134 which is connected with the rear side wall inner plate assembly 21 and the side wall rear support 23 and has a size of phi 14mm are formed in the rear connecting plate 13 of the rear vehicle body, between the rear connecting plate mounting via hole 131 and the first rear connecting plate mounting hole 133, a main rear connecting plate positioning hole 132 which has a size of phi 10mm is formed; a second rear side wall assembly overlapping surface 135 and a second rear vehicle body overlapping surface 137 are respectively arranged on two sides of the rear vehicle body rear connecting plate 13, and a second rear connecting plate positioning hole 136 is formed in the second rear side wall assembly overlapping surface 135; as shown in FIG. 3, the second rear body faying surface 137 of the present embodiment is integrally connected with the rear body 11 by using 9 SPR self-piercing rivets 5 and a section of structural adhesive 9.
For improving manufacturing efficiency, the rear car body 11 of this embodiment is formed for using aluminium alloy plate integrative casting, for avoiding steel sheet and aluminium alloy to take place chemical reaction and lead to the structure to corrode, plays good anticorrosive effect, connecting plate 12 and rear car body rear connecting plate 13 are the galvanized steel sheet punching press of thickness 0.9-1.1mm before the rear car body and form, and the galvanized steel material of this embodiment is DC51D + Z, and thickness is 1.0mm. In order to solve the problem that the steel and aluminum are mixed and cannot be connected in a spot welding mode and meanwhile guarantee the rigidity and the strength of structural connection, the rear vehicle body front connecting plate 12 and the rear vehicle body rear connecting plate 13 are connected with the rear vehicle body 11 into a whole through SPR self-piercing riveting 5 and structural adhesive 9.
As shown in fig. 3 and 5, the quarter inner panel assembly 21 of the present embodiment includes a rear wheelhouse outer panel 212, and a rear wheelhouse inner panel 211, a quarter rear upper inner panel 213, a quarter rear upper inner panel connecting plate 214, and a roof rear cross beam supporting plate 215 fixedly connected to the rear wheelhouse outer panel 212 by spot welding; the rear wheel cover inner plate 211 and the upper inner plate connecting plate are arranged on two sides of a side wall rear upper inner plate 213, and the top cover rear cross beam supporting plate 215 is arranged on a side wall rear upper inner plate connecting plate 214; the rear wheel package inner plate 211 is fixedly connected with the rear vehicle body assembly 1, the storage plate side plate assembly 22 and the side wall rear supporting piece 23.
As shown in fig. 11, the rear wheel package inner plate 211 of the present embodiment is formed by stamping a common galvanized steel plate with a material thickness of 0.7mm and a material thickness of DC54D + Z; the rear wheel package inner plate 211 is provided with a package inner plate mounting through hole 2111 which is connected with a rear vehicle body 11 and has the size of phi 14mm, the lower side of the rear wheel package inner plate 211 is provided with a package inner plate lapping surface 2112 which is connected with a rear vehicle body assembly 1, an object placing plate side plate assembly 22 and a side wall rear support 23, the middle part of the package inner plate lapping surface 2112 is provided with two package inner plate nut holes 2113 and 2114 which are connected with the rear vehicle body 11 and the object placing plate side plate assembly 22 and have the size of phi 9mm, the package inner plate lapping surface 2112 is provided with a package inner plate nut hole two 2115, a package inner plate nut hole three 2116 and a package inner plate nut hole four 2117 which are connected with the rear vehicle body 11 and the side wall rear support 23 and have the size of phi 9 mm; a main-bag inner plate positioning hole 2118 and a secondary-bag inner plate positioning hole 2119 are respectively formed in two sides of the rear wheel bag inner plate 211; and the first inner plate-wrapping nut hole I2113, the second inner plate-wrapping nut hole I2114, the third inner plate-wrapping nut hole I2115, the third inner plate-wrapping nut hole I2116 and the fourth inner plate-wrapping nut hole I2117 are respectively welded with one M8 welding square nut 8, and the M8 welding square nuts and the welding square nuts 8 form a mounting point structure.
The first inner plate wrapping nut hole 2113, the first object placing plate mounting through hole 2211 and the second rear vehicle body mounting hole 114 are aligned in hole center, and the rear side wall assembly 2 is fixedly connected with the rear vehicle body assembly 1 by adopting an M8 sealing bolt 3; and the centers of the first inner plate covering nut hole 2114, the third storage plate mounting through hole 2222 and the second rear vehicle body mounting hole 114 are aligned, and the rear side wall assembly 2 is fixedly connected with the rear vehicle body assembly 1 by adopting an M8 sealing bolt 3.
As shown in fig. 4 and 10, the storage board side board assembly 22 of the present embodiment includes a storage board front lower support board 221, a storage board rear lower support board 222, a storage board side board front connection board 223, and a storage board side board 224; the rear lower support plate 222 and the front lower support plate 221 of the object placing plate are connected to two sides of the front connecting plate 223 of the edge plate of the object placing plate through spot welding, and the edge plate 224 of the object placing plate is fixedly connected with the rear lower support plate 222 of the object placing plate. The front lower support plate 221, the rear lower support plate 222 and the front connecting plate 223 of the object placing plate of the embodiment are all made of CA280/440VK, and the material thickness is 1.0mm.
As shown in fig. 13, the end of the object plate front lower support plate 221 of this embodiment is provided with a first object plate installation via 2211 with a size of Φ 12mm connected to the rear body 11 and the rear side surrounding inner panel assembly 21, a second object plate installation via 2212 with a size of Φ 12mm connected to the rear body 11, a first front lower support plate faying surface 2213, a second front lower support plate faying surface 2214, a third front lower support plate faying surface 2216 and a fourth front lower support plate faying surface 2217 connected to the rear side surrounding inner panel assembly 21, and the object plate front lower support plate 221 is further provided with a front lower support plate main positioning hole 2215 and a front lower support plate secondary positioning hole 2218.
As shown in fig. 14, the rear lower support plate 222 of the object-placing plate is provided with a first rear lower support plate overlapping surface 2221, a second rear lower support plate overlapping surface 2225, a third rear lower support plate overlapping surface 2227 and a fourth rear lower support plate overlapping surface 2228 which are connected with the side wall inner plate assembly, the rear lower support plate 222 of the object-placing plate is provided with a main rear lower support plate positioning hole 2229 and a secondary rear lower support plate positioning hole 2226, an object-placing plate mounting through hole three 2222 which is connected with the rear vehicle body 11 and the rear side wall inner plate assembly 21 and has a phi 12mm size, and an object-placing plate nut hole one 2223 and an object-placing plate nut hole two 2224 which are connected with the rear vehicle body 11 and have a phi 9mm size; the third lower support plate overlapping surface 2216 is fixedly connected with the second rear lower support plate overlapping surface 2225 through spot welding 4.
The front lower support plate 221 of the object placing plate and the rear lower support plate 222 of the object placing plate are connected through spot welding 4 to form a cavity structure; m8 welding square nuts 8 are welded at the first 2223 and second 2224 positions of the nut holes of the object placing plate, and form mounting point structures together with the welding square nuts 8; the hole centers of the second article placing plate mounting through hole 2212, the second article placing plate nut hole 2224 and the second rear vehicle body mounting hole 115 are aligned and fixedly connected with the same M8 sealing bolt 3, so that a mounting structure for connecting the rear side wall assembly 2 and the rear vehicle body assembly 1 is formed; the first nut hole 2223 of the object placing plate with the size of phi 9mm is aligned with the hole center of the second rear vehicle body mounting hole 115 with the size of phi 14mm, and is fixedly connected by adopting one sealing bolt 3, so that the mounting structure for connecting the rear side wall assembly 2 and the rear vehicle body assembly 1 is formed.
As shown in fig. 15, the edge of the storage board side board front connecting board 223 is integrally formed with a side board front connecting board overlapping surface one 2231, a side board front connecting board overlapping surface two 2233, and a side board front connecting board overlapping surface three 2235, and the two ends of the storage board side board front connecting board 223 are provided with a front connecting board main positioning hole 2234 and a front connecting board secondary positioning hole 2232.
As shown in fig. 16, the edge of the edge plate 224 is provided with a first overlapping surface 2241, a second overlapping surface 2243, a third overlapping surface 2244, and a fourth overlapping surface 2245, and the middle of the edge plate 224 is provided with a main positioning hole 2242 and a secondary positioning hole 2246. The third 2235 lapping surface of the front connecting plate of the side plate is connected with the fourth 2217 lapping surface of the front lower supporting plate by spot welding 4; the second joining surface 2233 of the front joining plate of the side plate is connected with the third joining surface 2227 of the rear lower supporting plate and the first joining surface of the side plate of the object placing plate through spot welding 4 to form an object placing plate side plate assembly 22.
As shown in fig. 17, a first support member overlapping surface 231 and a second support member overlapping surface 235 fixedly connected to the rear side wall inner panel assembly 21 are respectively disposed on two sides of the side wall rear support member 23 of the present embodiment, and a third support member overlapping surface is disposed on one side of the side wall rear support member 23 close to the storage plate side panel assembly 22; the upper part of the side wall rear supporting piece 23 is provided with a secondary supporting piece positioning hole 233 with the size of phi 8 multiplied by 10mm, the middle part is provided with a main supporting piece positioning hole 234 with the size of phi 8mm, the lower part is provided with two supporting piece nut holes 236 and 237 with the size of phi 8 multiplied by 10mm, the two supporting piece nut holes 236 and 237 are connected with the rear car body 11, and M8 type welding square nuts 8 are welded at the two supporting piece nut holes 236 and 237 to form a mounting point structure together with the welding square nuts 8. The nut holes 236 and 237 of the support pieces are respectively aligned with the hole centers of the five rear car body mounting holes 117, and the rear side wall assembly 2 is fixedly connected with the rear car body assembly 1 by adopting an M8 sealing bolt 3. The side wall rear supporting piece 23 of the embodiment is made of CA280/440VK and is formed by stamping a common high-strength steel plate with the material thickness of 1.2 mm.
Aligning the centers of the second 2115 wrapped inner plate nut hole with the size of phi 9mm, the fourth 116 wrapped rear vehicle body mounting hole with the size of phi 15mm and the second 134 wrapped rear connecting plate mounting hole with the size of phi 14mm, and fixedly connecting the rear side wall assembly 2 with the rear vehicle body assembly 1 by adopting one M8 sealing bolt 3; aligning the centers of a third 2116 wrapped inner plate nut hole with the size of phi 9mm, a fourth 116 wrapped rear vehicle body installation hole with the size of phi 15mm and a first 133 wrapped rear connecting plate installation hole with the size of phi 14mm, and fixedly connecting the rear side wall assembly 2 with the rear vehicle body assembly 1 by adopting one M8 sealing bolt 3; aligning the hole centers of a plate-wrapped inner nut hole IV 2117 with the size of phi 9mm, a rear vehicle body mounting hole VI 118 with the size of phi 15mm and a rear connecting plate mounting through hole 131 with the size of phi 14mm, and fixedly connecting the rear side wall assembly 2 with the rear vehicle body assembly 1 by adopting an M8 sealing bolt 3; the package inner plate mounting through hole 2111 with the size of phi 14mm is aligned with the hole center of the rear connecting plate mounting through hole 131 with the size of phi 15mm, and the rear side wall assembly 2 is fixedly connected with the rear vehicle body assembly 1 through one M8 sealing bolt 3.
In the embodiment, 12 to 14 welding spots are adopted for welding the rear side wall inner plate assembly 21 and the storage plate edge plate assembly 22 at the first front lower supporting plate faying surface 2213 and the first rear lower supporting plate faying surface 2221, 13 welding spots are adopted in the embodiment, 10 to 12 welding spots are adopted for welding the rear side wall inner plate assembly 21 and the side wall rear supporting piece 23 at the first supporting piece faying surface 231 and the second supporting piece faying surface 235, and 11 welding spots are adopted in the embodiment.
The rear side wall inner plate assembly 21 of this embodiment and the preceding lower brace faying surface 2213 of putting thing board edge plate assembly 22, preceding lower brace faying surface two 2214, preceding lower brace faying surface three 2216, back lower brace faying surface one 2221, back lower brace faying surface four 2228, connecting plate faying surface one 2231 before the sideboard, put thing board edge plate faying surface two 2243, put thing board edge plate faying surface three 2244 and pass through spot welding 4 welding, constitute the anterior cavity structures of rear side wall inner plate assembly.
The first support part overlapping surface 231 and the second support part overlapping surface 235 of the rear side wall inner plate assembly 21 and the rear side wall support part 23 are welded by 11 spot welding 4, and the third support part overlapping surface 232 of the rear side wall support part 23 and the fourth support part overlapping surface 2245 of the side plate assembly 22 are welded by 6 spot welding 4 to form a rear cavity structure of the rear side wall inner plate assembly.
In the embodiment, the rear vehicle body assembly 1 and the rear side wall assembly 2 are connected with a section of structural adhesive 9 by 9-11 spot welding at a first 124 part of the lap joint surface of the rear side wall assembly of the rear vehicle body front connecting plate 12, and 10 spot welding are adopted in the embodiment; the rear vehicle body assembly 1 and the rear side wall assembly 2 are connected with a section of structural adhesive 9 by 3-5 spot welds at the second 135 of the lap joint surface of the rear side wall assembly of the rear vehicle body rear connecting plate 13, 4 are adopted in the embodiment; the rear vehicle body assembly 1 and the rear side wall assembly 2 are connected with a second rear vehicle body overlapping surface 137 of the rear vehicle body rear connecting plate 13 by a section of structural adhesive 9.
In the embodiment, the whole connection of the rear vehicle body assembly 1 and the rear side wall assembly 2 adopts 14 spot welding 4, three sections of structural adhesives 9 and 10M 8 sealing bolts 3. In the connecting mode, the connecting structure of the rear side wall assembly 2 and the rear vehicle body assembly 1 is comprehensively implemented by adopting three connecting modes of spot welding, structural adhesive and screw joint, so that the problem of changing the molding wheel arch boundary due to insufficient full-spot welding connecting and welding space is effectively solved, the influence of engineering on the molding is reduced, and the perfect design of the molding is facilitated; meanwhile, two force transmission paths 6 and 7 of a front support and a rear support are formed structurally, and the integral bending rigidity of the vehicle body, the rigidity of a rear auxiliary frame attachment point and the NVH performance are greatly improved.
Examples 2,
The present embodiment is a vehicle using the combination structure of the rear side wall assembly and the rear body assembly of the passenger car in embodiment 1, and the vehicle is a fuel vehicle or an electric vehicle.
From the above embodiment, the storage board side plate assembly 22 is connected with the front reinforcing cavity 111 of the rear vehicle body 11 by using 4M 8 sealing bolts 3 to form a front cavity structure of the rear side wall assembly, and a first force transmission path 6 is formed, so as to form a first annular cavity structure with the storage board side plate assembly 22, the rear side wall assembly 2, and the rear vehicle body assembly 1 at the rear of the vehicle body. The rear reinforcing cavity 112 of the rear body 11 is connected by 4M 8 sealing bolts 3 to form a rear cavity structure of the rear side wall assembly, and a second force transmission path 7 is formed to form a second annular cavity structure with the storage plate edge plate assembly 22, the rear side wall assembly 2 and the rear body assembly 1 at the rear part of the body. The two annular cavity structures form a part of an integral frame at the rear part of the vehicle body, so that the bending rigidity of the vehicle body, the rigidity of a rear auxiliary frame attachment point and the NVH performance are greatly improved.
Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the true spirit and scope of the present invention, which is defined by the claims appended hereto. The techniques, shapes, and configurations not described in detail in the present invention are all known techniques.

Claims (20)

1. The utility model provides a connection structure of car rear side wall assembly and back automobile body assembly, includes back automobile body assembly and back side wall assembly, its characterized in that: the rear car body assembly and the rear side wall assembly form an integral structure by adopting a connection mode of spot welding, structural adhesive and screw connection; the rear vehicle body assembly comprises a rear vehicle body, the front end of the rear vehicle body is fixedly connected with a rear vehicle body front connecting plate, the rear end of the rear vehicle body is fixedly connected with a rear vehicle body rear connecting plate, the front part of the rear vehicle body is provided with a front reinforcing cavity, and the rear part of the rear vehicle body is provided with a rear reinforcing cavity; the rear side wall assembly comprises a rear side wall inner plate assembly, a storage plate edge plate assembly and a side wall rear supporting piece, wherein the rear side wall inner plate assembly and the side wall rear supporting piece are arranged on two sides of the storage plate edge plate assembly, the rear side wall inner plate assembly is fixedly connected with a rear vehicle body front connecting plate, and the side wall rear supporting piece is fixedly connected with a rear vehicle body rear connecting plate; the object placing plate side plate assembly is fixedly connected with the rear vehicle body at the front part reinforcing cavity and the rear part reinforcing cavity respectively to form a rear side wall inner plate assembly, and the object placing plate side plate assembly and the side wall rear part supporting piece are fixedly connected to form a first annular cavity structure at the front part and a second annular cavity structure at the rear part.
2. The connecting structure of the car rear side wall assembly and the rear car body assembly according to claim 1, characterized in that: the rear car body is provided with a first rear car body mounting hole connected with the rear side wall inner plate assembly, a second rear car body mounting hole connected with the rear side wall inner plate assembly and the object placing plate edge plate assembly, a third rear car body mounting hole connected with the object placing plate edge plate assembly, a fourth rear car body mounting hole connected with the rear side wall inner plate assembly and the side wall rear supporting piece, a fifth rear car body mounting hole connected with the side wall rear supporting piece and a sixth rear car body mounting hole connected with the rear side wall inner plate assembly.
3. The connecting structure of the car rear side wall assembly and the rear car body assembly according to claim 2, characterized in that: the two sides of the rear vehicle body front connecting plate are respectively provided with a rear vehicle body overlap joint surface I and a rear side wall assembly overlap joint surface I, two ends of the rear side wall assembly overlap joint surface I are respectively provided with a main front connecting plate positioning hole and a secondary front connecting plate positioning hole, and the rear vehicle body overlap joint surface I and the rear vehicle body are connected into a whole through SPR self-piercing riveting and one section of structural adhesive.
4. The connecting structure of the car rear side wall assembly and the rear car body assembly according to claim 3, characterized in that: a rear connecting plate mounting through hole connected with the rear side wall inner plate assembly is formed in the rear connecting plate of the rear vehicle body, a notch is formed in the rear connecting plate of the rear vehicle body, rear connecting plate mounting holes I connected with the rear side wall inner plate assembly and the side wall rear supporting piece and rear connecting plate mounting holes II connected with the rear side wall inner plate assembly and the side wall rear supporting piece are respectively formed in the rear connecting plate of the rear vehicle body positioned on two sides of the notch, and a main rear connecting plate positioning hole is formed in the rear connecting plate of the rear vehicle body between the rear connecting plate mounting through hole and the rear connecting plate mounting holes I; a second rear side wall assembly overlapping surface and a second rear vehicle body overlapping surface are respectively arranged on two sides of the rear vehicle body rear connecting plate, and a second rear connecting plate positioning hole is formed in the rear side wall assembly overlapping surface; and the second lapping surface of the rear vehicle body and the rear vehicle body are connected into a whole by SPR self-piercing riveting and a section of structural adhesive.
5. The connecting structure of the car rear side wall assembly and the rear car body assembly according to claim 4, characterized in that: the rear car body is formed by integrally casting aluminum alloy plates, and the front connecting plate of the rear car body and the rear connecting plate of the rear car body are formed by stamping galvanized steel plates with the thickness of 0.9-1.1 mm.
6. The connecting structure of the car rear side wall assembly and the rear car body assembly according to claim 4, characterized in that: the rear side wall inner plate assembly comprises a rear wheel packet outer plate, a rear wheel packet inner plate, a side wall rear upper inner plate connecting plate and a top cover rear cross beam supporting plate, wherein the rear wheel packet inner plate, the side wall rear upper inner plate connecting plate and the top cover rear cross beam supporting plate are fixedly connected to the rear wheel packet outer plate; the rear wheel cover inner plate and the upper inner plate connecting plate are arranged on two sides of the side wall rear upper inner plate, and the top cover rear cross beam supporting plate is arranged on the side wall rear upper inner plate connecting plate; the rear wheel package inner plate is fixedly connected with the rear vehicle body assembly, the object placing plate edge plate assembly and the side wall rear supporting piece.
7. The connecting structure of the car rear side wall assembly and the rear car body assembly according to claim 6, characterized in that: the rear wheel package inner plate is provided with a package inner plate mounting through hole connected with a rear vehicle body, the lower side of the rear wheel package inner plate is provided with a package inner plate overlapping surface connected with a rear vehicle body assembly, a storage plate edge plate assembly and a side wall rear supporting piece, the middle part of the package inner plate overlapping surface is provided with a package inner plate nut hole I connected with the rear vehicle body and the storage plate edge plate assembly, and the package inner plate overlapping surface is provided with a package inner plate nut hole II, a package inner plate nut hole III and a package inner plate nut hole IV connected with the rear vehicle body and the side wall rear supporting piece; the two sides of the rear wheel package inner plate are respectively provided with a main package inner plate positioning hole and a secondary package inner plate positioning hole; welding square nuts are welded at the first inner plate-wrapped nut hole, the second inner plate-wrapped nut hole, the third inner plate-wrapped nut hole and the fourth inner plate-wrapped nut hole respectively, and the welding square nuts form an installation point structure.
8. The connecting structure of the car rear side wall assembly and the rear car body assembly according to claim 7, characterized in that: the centers of the first inner plate nut hole, the first object placing plate mounting through hole and the second rear vehicle body mounting hole are aligned, and the rear side wall assembly and the rear vehicle body assembly are fixedly connected by adopting a sealing bolt; the hole centers of the first inner plate nut hole, the third object placing plate mounting through hole and the second rear vehicle body mounting hole are aligned, and the rear side wall assembly is fixedly connected with the rear vehicle body assembly through the sealing bolt.
9. The connecting structure of the car rear side wall assembly and the rear car body assembly according to claim 7, characterized in that: the object placing plate edge plate assembly comprises an object placing plate front lower supporting plate, an object placing plate rear lower supporting plate, an object placing plate edge plate front connecting plate and an object placing plate edge plate; put behind the thing board bottom suspension fagging and put the both sides of thing board front connection board of thing board front suspension fagging setting, put thing board sideboard and put behind the thing board bottom suspension fagging fixed connection.
10. The connecting structure of the car rear side wall assembly and the rear car body assembly according to claim 9, characterized in that: the end part of the front lower supporting plate of the object placing plate is provided with a first object placing plate mounting through hole connected with the rear vehicle body and the rear side wall inner plate assembly, a second object placing plate mounting through hole connected with the rear vehicle body, a first front lower supporting plate lap joint surface, a second front lower supporting plate lap joint surface, a third front lower supporting plate lap joint surface and a fourth front lower supporting plate lap joint surface which are connected with the rear side wall inner plate assembly, and the front lower supporting plate of the object placing plate is also provided with a main front lower supporting plate positioning hole and a secondary front lower supporting plate positioning hole; the rear lower support plate of the object placing plate is provided with a first rear lower support plate overlapping surface, a second rear lower support plate overlapping surface, a third rear lower support plate overlapping surface and a fourth rear lower support plate overlapping surface which are connected with the side wall inner plate assembly; and the lower support plate lapping surface III is fixedly connected with the rear lower support plate lapping surface II through spot welding.
11. The connecting structure of the car rear side wall assembly and the rear car body assembly according to claim 10, characterized in that: the front lower supporting plate of the object placing plate and the rear lower supporting plate of the object placing plate are connected to form a cavity structure; welding square nuts are welded in the first object placing plate nut hole and the second object placing plate nut hole, and the welding square nuts form a mounting point structure; the hole centers of the second object placing plate mounting hole, the second object placing plate nut hole and the third rear vehicle body mounting hole are aligned and fixedly connected with the same sealing bolt, so that a mounting structure for connecting the rear side wall assembly and the rear vehicle body assembly is formed; and the first nut hole of the object placing plate is aligned with the center of the third mounting hole of the rear vehicle body and is fixedly connected with the same sealing bolt, so that the mounting structure for connecting the rear side wall assembly and the rear vehicle body assembly is formed.
12. The connecting structure of the car rear side wall assembly and the rear car body assembly according to claim 11, characterized in that: the two sides of the side wall rear supporting piece are respectively provided with a supporting piece lapping surface I and a supporting piece lapping surface II which are fixedly connected with the rear side wall inner plate assembly, and one side of the side wall rear supporting piece close to the object placing plate edge plate assembly is provided with a supporting piece lapping surface III; the upper part of the side wall rear supporting piece is provided with a secondary supporting piece positioning hole, the middle part of the side wall rear supporting piece is provided with a main supporting piece positioning hole, the lower part of the side wall rear supporting piece is provided with a supporting piece nut hole connected with the rear car body, and a welding square nut is welded at the supporting piece nut hole and forms a mounting point structure with the welding square nut.
13. The connecting structure of the car rear side wall assembly and the rear car body assembly according to claim 12, characterized in that: the edge of the edge plate front connecting plate of the object placing plate is integrally formed with an edge plate front connecting plate lapping surface I, an edge plate front connecting plate lapping surface II and an edge plate front connecting plate lapping surface III, and two ends of the edge plate front connecting plate of the object placing plate are provided with a front connecting plate main positioning hole and a front connecting plate secondary positioning hole; the edge of the edge plate of the object placing plate is provided with a first object placing plate edge plate overlapping surface, a second object placing plate edge plate overlapping surface, a third object placing plate edge plate overlapping surface and a fourth object placing plate edge plate overlapping surface, and the middle part of the edge plate of the object placing plate is provided with a main object placing plate edge plate positioning hole and a secondary object placing plate edge plate positioning hole; the third lapping surface of the front connecting plate of the side plate is connected with the fourth lapping surface of the front lower supporting plate through spot welding; the lap joint surface II of the front connecting plate of the side plate is connected with the lap joint surface III of the rear lower supporting plate and the lap joint surface I of the side plate of the object placing plate through spot welding to form an object placing plate side plate assembly.
14. The connecting structure of the car rear side wall assembly and the rear car body assembly according to claim 12, characterized in that: and the nut holes of the support piece are respectively aligned with the hole centers of the fifth rear vehicle body mounting hole, and the rear side wall assembly is fixedly connected with the rear vehicle body assembly by adopting sealing bolts.
15. The connecting structure of the car rear side wall assembly and the rear car body assembly according to claim 12, characterized in that: the second inner plate-wrapped nut hole, the fourth rear vehicle body mounting hole and the second rear connecting plate mounting hole are aligned, and the rear side wall assembly is fixedly connected with the rear vehicle body assembly by adopting a sealing bolt; the third inner plate-wrapped nut hole, the fourth rear vehicle body mounting hole and the first rear connecting plate mounting hole are aligned, and the rear side wall assembly is fixedly connected with the rear vehicle body assembly by adopting a sealing bolt; the fourth inner plate-wrapped nut hole, the sixth rear vehicle body mounting hole and the hole center of the rear connecting plate mounting through hole are aligned, and the rear side wall assembly is fixedly connected with the rear vehicle body assembly by adopting a sealing bolt; the hole centers of the inner plate covering mounting through holes and the rear connecting plate mounting through holes are aligned, and the rear side wall assembly and the rear vehicle body assembly are fixedly connected through sealing bolts.
16. The connecting structure of the car rear side wall assembly and the rear car body assembly according to claim 15, characterized in that: the front cavity structure of the rear side wall inner plate assembly is formed by welding a first lap surface of the rear side wall inner plate assembly with a first front lower supporting plate, a second lap surface of the front lower supporting plate, a third lap surface of the front lower supporting plate, a first lap surface of the rear lower supporting plate, a fourth lap surface of the rear lower supporting plate, a first lap surface of a front side plate of a side plate, a second lap surface of a side plate of a storage plate and a third lap surface of a side plate of the storage plate through spot welding; the lap joint surface I of the rear side wall inner plate assembly and the support piece and the lap joint surface II of the support piece are welded by 10-12 spot welds, and the lap joint surface III of the support piece and the lap joint surface IV of the edge plate of the storage plate are welded by 5-7 spot welds to form a rear cavity structure of the rear side wall inner plate assembly.
17. The connecting structure of the car rear side wall assembly and the rear car body assembly according to claim 13, characterized in that: the rear side wall inner plate assembly and the object placing plate edge plate assembly are welded by adopting 12-14 welding spots at the overlapping surface of the front lower supporting plate and the overlapping surface of the rear lower supporting plate, and the rear side wall inner plate assembly and the side wall rear supporting piece are welded by adopting 10-12 welding spots at the overlapping surface I of the supporting piece and the overlapping surface II of the supporting piece.
18. The connecting structure of the car rear side wall assembly and the rear car body assembly according to claim 4, characterized in that: the rear vehicle body assembly and the rear side wall assembly are connected with one section of structural adhesive at the lap joint surface of the rear side wall assembly of the front connecting plate of the rear vehicle body by 9-11 spot welds; the rear car body assembly and the rear side wall assembly are connected with a second lap joint surface of the rear side wall assembly of the rear car body rear connecting plate by 3-5 spot welds and a section of structural adhesive; the rear car body assembly and the rear side wall assembly are connected with a second rear car body lap joint surface of the rear car body rear connecting plate by adopting a section of structural adhesive.
19. A vehicle, characterized in that: the vehicle comprises the connecting structure of the rear side wall assembly and the rear vehicle body assembly of the sedan according to any one of claims 1 to 18.
20. The vehicle of claim 19, wherein the vehicle comprises a fuel-fired vehicle or an electric vehicle.
CN202210778322.3A 2022-06-29 2022-06-29 Connection structure and vehicle of car rear side wall assembly and rear vehicle body assembly Active CN115158472B (en)

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Citations (5)

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CN202518357U (en) * 2012-02-29 2012-11-07 重庆长安汽车股份有限公司 Automobile article shelf supporting frame
CN210653375U (en) * 2019-07-09 2020-06-02 广州汽车集团股份有限公司 Steel-aluminum hybrid vehicle body structure and automobile
US20200269930A1 (en) * 2019-02-27 2020-08-27 Mazda Motor Corporation Rear vehicle-body structure of vehicle
CN213442783U (en) * 2020-11-13 2021-06-15 上海诺拉汽车科技有限公司 Novel vehicle body C column reinforcing structure
CN215851491U (en) * 2021-06-29 2022-02-18 上汽通用五菱汽车股份有限公司 Double-ring rear vehicle body structure

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202518357U (en) * 2012-02-29 2012-11-07 重庆长安汽车股份有限公司 Automobile article shelf supporting frame
US20200269930A1 (en) * 2019-02-27 2020-08-27 Mazda Motor Corporation Rear vehicle-body structure of vehicle
CN210653375U (en) * 2019-07-09 2020-06-02 广州汽车集团股份有限公司 Steel-aluminum hybrid vehicle body structure and automobile
CN213442783U (en) * 2020-11-13 2021-06-15 上海诺拉汽车科技有限公司 Novel vehicle body C column reinforcing structure
CN215851491U (en) * 2021-06-29 2022-02-18 上汽通用五菱汽车股份有限公司 Double-ring rear vehicle body structure

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