JP2018052280A - Vehicle structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle structure configured such that aluminium alloy is adopted to a large part of the other side structure located the other of outer and inner sides of a vehicle body and that on a conventional vehicle body assembly line, the other side structure can be connected to one side structure located at one of the outer and inner sides of the vehicle body.SOLUTION: A vehicle structure 10 includes one side structure 2 made of steel and located at one of outer and inner sides of a vehicle body, and the other side structure 1 located at the other of the outer and inner sides of the vehicle body and connected to the one side structure 2. The other side structure 1 includes a top portion 11 made of aluminium alloy and protruding toward the other of the outer and inner sides, wall portions 12, 13 made of aluminium alloy and extending respectively from opposite ends of the top portion 11 toward one of the outer and inner sides, and tabs 31, 32 made of steel, attached to end portions of the wall portions 12, 13, extending outward of the other side structure 1, and connected to the one side structure 2.SELECTED DRAWING: Figure 2

Description

  The present invention is located on one side of the vehicle body, in particular, on the vehicle body outer side or the inner side, and on the vehicle body outer side or the other side of the inner side. The other side structure joined to one side structure is related with the structure for vehicles provided with.

  As is well known, many of the structures used in automobiles have recently been required to have a collision energy absorption capability against a collision of a vehicle body together with rigidity and strength which are basic characteristics. .

  And in patent document 1, as a structure excellent in collision energy absorption, the structure for motor vehicles which arrange | positioned the aluminum alloy hollow shape material for reinforcement between the steel outer structure and the steel inner structure Is disclosed.

JP 2006-248461 A

  Here, it is conceivable to employ an aluminum alloy for the outer structure in order to achieve further weight reduction of the structure and to further improve the collision energy absorption of the structure. In this case, the outer structure of the aluminum alloy and the inner structure made of steel need to be bonded to each other, but the conventional body assembly line is welded to the outer structure made of steel and the inner structure made of steel by welding. It is comprised so that it may join. Therefore, if such dissimilar material joining is to be performed in the conventional vehicle body assembly line, significant line modification and capital investment are required.

  Therefore, in the present invention, while adopting an aluminum alloy for most of the other side structure located on the outer side of the vehicle body or the other side of the vehicle body, the other side structure and the vehicle body outer side or It aims at providing the structure for vehicles which can join the one side structure located in one side of an inward side.

One aspect of the present invention is a steel one-side structure located on one side of the vehicle body outer side or the inner side;
A vehicle structure comprising: the vehicle body outer side or the other side of the inner side, and the other side structure joined to the one side structure,
The other side structure has a top made of an aluminum alloy protruding to the other side;
An aluminum alloy wall extending from the both ends of the top to the one side,
It is attached to the edge part of the said wall part, is extended in the outward of the said other side structure, The steel tab part joined to the said one side structure is provided, It is characterized by the above-mentioned.

  According to the above configuration, since the joining between the other side structure and the one side structure can be achieved by joining the steel tab portion and the one side structure made of steel, most of the other side structure is made of aluminum. It is possible to provide a vehicle structure capable of joining the other side structure and the one side structure in a conventional vehicle body assembly line while employing an alloy.

  The aspect preferably further comprises the following configuration.

(1) One end portion of the tab portion is attached to an end portion of the wall portion, extends from the one end portion to the bent portion on the one side, and bends toward the outside of the other side structure at the bent portion. However, it reaches the other end.

  The configuration (1) is a specific structure of the tab portion, and according to this configuration, a tab portion that can be easily joined to the one-side structure can be provided.

(2) In a cross section perpendicular to the longitudinal direction of the other side structure,
In the other side structure, at least a part of the other side is formed with one or more closed spaces.

  According to the configuration (2), by forming the closed space on the other side of the other side structure, it is possible to improve the shock absorption of the other side structure.

(3) In the configuration (2), at least one closed space of the closed space extends to the one side, and the one end face thereof is adjacent to the one side structure.

  According to the configuration (3), in the other side structure, a closed space extending from the other side end surface to the one side end surface adjacent to the one side structure can be formed, and the shock absorption property of the other side structure is improved. Can be made. In addition, a bulkhead provided between the other side structure and the one side structure can be omitted, and the structure of the structure can be simplified and reduced in weight.

(4) The tab portion is made of a high-strength steel plate,
The high strength steel plate has a tensile strength of 590 MPa or more.

  According to the configuration (4), conventionally, even when it is necessary to arrange a reinforcing material for reinforcement at the time of collision, the reinforcing material is abolished by improving the strength of the tab portion to a predetermined level or more. can do. As a result, simplification and weight reduction of the structure of the other side structure can be achieved.

(5) The top part and the wall part are made of an extruded material of an aluminum alloy,
The wall thickness of at least a part of the top part or the wall part is thicker than the wall thickness of other parts.

  According to the configuration (5), the top portion and the wall portion are made of an extruded material of an aluminum alloy. Therefore, by increasing the thickness without adding a reinforcing material for a portion that needs to be reinforced at the time of collision. Yes.

  ADVANTAGE OF THE INVENTION According to this invention, the structure for vehicles which can join the other side structure and one side structure in the conventional vehicle body assembly line can be provided, adopting aluminum alloy for the most part of the other side structure. .

The perspective view of the structure for vehicles concerning the embodiment of the present invention. II-II sectional drawing of FIG. The vertical sectional view in case the edge part of a 1st wall part and the edge part of a 2nd wall part form closed space. The vertical cross section in the case where the vehicle body inner side end surface of closed space adjoins an inner structure. The vertical sectional view in the case where the outer structure is formed of a plate material.

  FIG. 1 is a perspective view of a vehicle structure 10 according to an embodiment of the present invention, and FIG. 2 is a II-II cross-sectional view in a plane perpendicular to the longitudinal direction X of FIG. In the present embodiment, the vehicle structural body 10 is a rocker (side sill), the longitudinal direction X corresponds to the longitudinal direction of the vehicle body, the Y direction corresponds to the vehicle width direction, and the Z direction corresponds to the vertical direction.

  As shown in FIGS. 1 and 2, the vehicle structure 10 includes a second-side structure 1 (hereinafter referred to as an outer structure 1) positioned on the other side of the vehicle body (hereinafter referred to as the vehicle body outer side), 1 side structure 2 (henceforth inner structure 2) located in one side (henceforth vehicle body inner side). The outer structure 1 has a hollow shape in a cross-sectional view.

  The outer structure 1 protrudes outward from the vehicle body and extends in a substantially vertical direction, and a first wall portion 12 and a second wall portion 13 that extend from the vertical end portions of the top portion 11 to the vehicle body inner side, respectively. It has. Further, the outer structure 1 connects the first wall portion 12 and the second wall portion 13, connects the first rib portion 14 that extends substantially in the vertical direction, the top portion 11, and the first rib portion 14. A second rib portion 15 extending in the direction. The top part 11, the first wall part 12, the second wall part 13, the first rib part 14 and the second rib part 15 are integrally formed and made of an extruded material of aluminum alloy. The tensile strength of the aluminum alloy is 300 MPa or more.

  The first wall 12 extends so as to incline outward (upward) of the outer structure 1 toward the inner side of the vehicle body, and the second wall 13 extends toward the inner side of the vehicle body. It extends so as to incline outward (downward). The second rib portion 15 extends in a substantially horizontal direction toward the inner side of the vehicle body.

  The top part 11, the first wall part 12, the second wall part 13, the first rib part 14, and the second rib part 15 form a hollow shape that forms a closed space 91 and a closed space 92 on the outer side of the vehicle body. Yes. Specifically, the closed space 91 is surrounded by the top portion 11, the first wall portion 12, the first rib portion 14, and the second rib portion 15. The closed space 92 is surrounded by the top part 11, the second wall part 13, the first rib part 14, and the second rib part 15.

  The outer structure 1 is further attached to the inner surface (lower surface) of the end 12 a of the first wall portion 12, extends outward (upward) from the outer structure 1, and is joined to the inner structure 2. 1 tab portion 31 is provided. The end portion 12 a is located at the vehicle body inner side end portion of the first wall portion 12 that does not form the closed space 91. The first tab portion 31 may be attached to the outer surface (upper surface) of the end portion 12a of the first wall portion 12.

  The thickness of at least a part of the top part 11, the first wall part 12, and the second wall part 13 is thicker than the thicknesses of the other parts. For example, in the present embodiment, the thickness of the connection portion 111 between the top portion 11 and the first wall portion 12 and the thickness of the connection portion 112 between the top portion 11 and the second wall portion 13 are thicker than the thickness of other portions. Yes.

  The outer structure 1 is further attached to the inner surface (upper surface) of the end 13 a of the second wall portion 13, extends outward (downward) from the outer structure 1, and is joined to the inner structure 2. Two tab portions 32 are provided. The end portion 13 a is located at the vehicle body inner side end portion of the second wall portion 13 that does not form the closed space 92. Note that the second tab portion 32 may be attached to the outer surface (lower surface) of the end portion 13 a of the second wall portion 13.

  The first tab portion 31 and the second tab portion 32 are made of a high strength steel plate, and the tensile strength of the high strength steel plate is 590 MPa or more. In addition, it is preferable that the 1st tab part 31 and the 2nd tab part 32 are formed using the thin plate of the super high strength steel whose tensile strength is 980 MPa or more.

  The first tab portion 31 has one end portion 31a attached to the end portion 12a of the first wall portion 12 and extends from the one end portion 31a to the bent portion 31b toward the inner side of the vehicle body. The bent portion 31b extends outward from the outer structure 1. It bends (upward) and extends from the bent portion 31b to the other end portion 31c. The first tab portion 31 has a substantially L shape.

  The second tab portion 32 has one end portion 32a attached to the end portion 13a of the second wall portion 13 and extends from the one end portion 32a to the bent portion 32b inward of the vehicle body. The bent portion 32b extends outwardly from the outer structure 1. It bends (downward) and reaches the other end 32c from the bent portion 32b. The second tab portion 32 has a substantially L shape.

  The joining of the first wall portion 12 and the first tab portion 31 and the joining of the second wall portion 13 and the second tab portion 32 are different materials joining of an aluminum alloy and steel, and by a known rivet or the like. Achieved. This dissimilar joining is performed not on the vehicle body assembly line but on the production line of the outer structure 1.

  The inner structure 2 protrudes inward of the vehicle body and extends in a substantially vertical direction, and a first wall portion 22 and a second wall portion 23 that extend outward from the both ends of the top portion 21 in the vertical direction, respectively. It has. Further, the inner structure 2 includes a first flange portion 24 extending from the end of the first wall portion 22 toward the outside (upward) of the inner structure 2, and an inner structure from the end of the second wall portion 23. 2 and a second flange portion 25 extending outward (downward). The top portion 21, the first wall portion 22, the second wall portion 23, the first flange portion 24, and the second flange portion 25 are integrally formed from a plate material and are made of a high-strength steel plate. The tensile strength of the high-strength steel plate is 590 MPa or more.

  The top portion 21 may have a plurality of portions with different amounts of protrusion toward the vehicle body inward side. For example, in the present embodiment, the top portion 21 includes a first top portion 21a that has a small protrusion amount toward the vehicle body inward side, and a second top portion 21b that has a protrusion amount toward the vehicle body inward side that is greater than the first top portion 21a. ing. The second top portion 21b is formed below the first top portion 21a.

  The first wall portion 22 is inclined outward (upward) of the inner structure 2 toward the outer side of the vehicle body, and the second wall portion 23 is disposed outside the outer structure 1 toward the outer side of the vehicle body. It is inclined in the direction (downward). And since the 1st flange part 24 and the 2nd flange part 25 are extended in the up-and-down direction, the angle which the 1st wall part 22 and the 1st flange part 24 make, and the 2nd wall part 23 and the 2nd Each of the angles formed with the flange portion 25 exceeds 90 degrees.

  In the vehicle body assembly line, the steel first tab portion 31 of the outer structure 1 and the steel first flange portion 24 of the inner structure 2 are spot welded, and the steel second tab portion 24 of the outer structure 1 is also spot welded. The tab portion 32 and the steel second flange portion 25 of the inner structure 2 are spot-welded. As a result, the outer structure 1 and the inner structure 2 are joined, and the vehicle structure 10 is formed.

  According to the outer structure 1 configured as described above, the following effects can be exhibited.

(1) Since the outer structure 1 and the inner structure 2 can be joined by joining the first tab portion 31 made of steel, the second tab portion 32 and the inner structure 2 made of steel, the outer structure The outer structure 1 which can join the outer structure 1 and the inner structure 2 with the conventional vehicle body assembly line can be provided, adopting aluminum alloy for most of 1.

(2) The first tab portion 31 has one end portion 31a attached to the end portion 12a of the first wall portion 12, and extends from the one end portion 31a to the bent portion 31b inward of the vehicle body, and the outer structure 1 at the bent portion 31b. It bends toward the outside and reaches the other end 31c. Similarly, the second tab portion 32 has one end portion 32a attached to the end portion of the second wall portion 13 and extends from the one end portion 32a to the bent portion 32b toward the inside of the vehicle body. It bends outward and reaches the other end 32c. With such a structure of the first tab portion 31 and the second tab portion 32, the first tab portion 31 and the second tab portion 32 that can be easily joined to the inner structure 2 can be provided.

(3) In the cross section perpendicular to the longitudinal direction X of the outer structure 1, closed spaces 91 and 92 are formed in the outer structure 1 on the outer side of the vehicle body. Here, by forming the closed spaces 91 and 92 in the outer structure 1, it is possible to improve the shock absorption of the outer structure 1. In particular, by forming the closed spaces 91 and 92 on the outer side of the vehicle body, the shock absorption of the outer structure 1 can be further improved as compared with the case where the closed space is formed on the inner side of the vehicle body.

(4) The thickness of the connecting portion 111 between the top portion 11 and the first wall portion 12 and the thickness of the connecting portion 112 between the top portion 11 and the second wall portion 13 are thicker than the thickness of the other portions. This structure can be easily achieved by the top part 11, the 1st wall part 12, and the 2nd wall part 13 being made from the extrusion material of the aluminum alloy. As a result, in the outer structure 1, it is possible to easily cope with a portion requiring reinforcement at the time of collision by increasing the thickness without adding a reinforcing material. In addition, the top part 11, the 1st wall part 12, the 2nd wall part 13, the 1st rib part 14, and the 2nd rib part 15 are integrally formed, and are made of the extrusion material of an aluminum alloy. Therefore, it is not limited to the connection part between the top part 11 and the first wall part 12 and the connection part between the top part 11 and the second wall part 13, and the thickness of any desired part is made thicker than other parts. Can do.

(5) The first tab portion 31 and the second tab portion 32 are made of a high strength steel plate, and the tensile strength of the high strength steel plate is 590 MPa or more. For example, when the outer structure 1 is a side sill (rocker), the end portion of the first wall portion 12 to which the first tab portion 31 is attached and the end portion of the second wall portion 13 to which the second tab portion 32 is attached are provided. Conventionally, it has been necessary to arrange a reinforcing material for reinforcement against an impact in the longitudinal direction X (impact at the time of frontal collision). Here, the reinforcing material can be eliminated by improving the strength of the first tab portion 31 and the second tab portion 32. As a result, the structure of the outer structure 1 can be simplified and reduced in weight.

(Modification 1)
In the above embodiment, the end of the first wall and the end of the second wall do not form a closed space, but the end of the first wall and the end of the second wall form a closed space. May be. FIG. 3 is a vertical cross-sectional view when the end of the first wall and the end of the second wall form a closed space.

  As shown in FIG. 3, the first rib portion 14 connects the end portion 12 a of the first wall portion 12 and the end portion 13 a of the second wall portion 13, and extends substantially in the vertical direction. As a result, the end portion 12 a of the first wall portion 12 forms a closed space 91, and the end portion 13 a of the second wall portion 13 forms a closed space 92. Accordingly, the first tab portion 31 is attached to the outer surface (upper surface) of the end portion 12a of the first wall portion 12, and the second tab portion 32 is attached to the outer surface (lower surface) of the end portion 13a of the second wall portion 13. It is done.

  According to the said structure, compared with the said embodiment, the cross-sectional area of the closed space 91 and the closed space 92 can be enlarged, and the impact absorption property of the outer structure 1 can be improved.

(Modification 2)
In the above embodiment, the closed space 91 and the closed space 92 are provided on the outer side of the vehicle body. However, the closed space extends toward the inner side of the vehicle body, and the end surface on the inner side of the vehicle body is the inner structure 2. It may be adjacent to. FIG. 4 is a vertical cross-sectional view when the vehicle body inner side end surface of the closed space 93 is adjacent to the inner structure 2.

  As shown in FIG. 4, the first rib portion 14 extending in the up-down direction is divided into two parts, a third rib part 141 and a fourth rib part 142, and the first rib part divided into two parts. 14, and a closed space 93 is formed between the closed space 91 and the closed space 92. The closed space 93 is formed by the top portion 11, the fifth rib portion 16 and the sixth rib portion 17 extending in the vehicle width direction, and the seventh rib portion 18 extending in the vertical direction. The fifth rib portion 16 has the vehicle body outer end connected to the top portion 11 and the vehicle body inner end connected to the seventh rib portion 18. The fifth rib portion 16 is connected to the third rib portion 141 at the bent portion 16a at the vehicle width direction intermediate portion, and is inclined upward from the outer end of the vehicle body toward the bent portion 16a. Inclined downward toward the end.

  The sixth rib portion 17 is located below the fifth rib portion 16, the vehicle body outer end is connected to the top portion 11, and the vehicle body inner end is connected to the seventh rib portion 18. The sixth rib portion 17 is connected to the fourth rib portion 142 at the bent portion 17a at the intermediate portion in the vehicle width direction, and is inclined downward from the outer end of the vehicle body toward the bent portion 17a, and from the bent portion 17a to the inside of the vehicle body. It inclines upward toward the end.

  Since the 5th rib part 16 and the 6th rib part 17 are comprised as mentioned above, the closed space 93 is formed so that it may expand in the up-down direction in the vehicle width direction intermediate part. The seventh rib portion 18 is adjacent to the inner structure 2. Therefore, the closed space 93 extends from the vehicle body outer end surface of the outer structure 1 to the vehicle body inner end surface in the vehicle width direction, and the vehicle body inner end surface is adjacent to the inner structure 2.

  According to the above configuration, in the outer structure 1, the closed space 93 extending from the vehicle body outer end surface to the vehicle body inner end surface adjacent to the inner structure 2 can be formed, and the shock absorption of the outer structure 1 is improved. Can be made. Further, the bulkhead provided between the outer structure 1 and the inner structure 2 can be omitted, and the structure of the structure can be simplified and reduced in weight.

  In the embodiment and the first and second modifications, the outer structure 1 has two or more closed spaces. However, when the one or more closed spaces are formed, the shock absorbing property of the outer structure 1 is increased. Can be improved. In addition, when two or more closed spaces are formed on the outer side of the vehicle body, a partition wall is formed between the closed spaces, and the shock absorption of the outer structure 1 can be further improved.

(Modification 3)
In the above embodiment and the first and second modifications, the outer structure 1 is formed of a hollow extruded material, but may be formed of a plate material. FIG. 5 is a vertical sectional view when the outer structure 1 is formed of a plate material.

  As shown in FIG. 5, the outer structure 1 protrudes outward from the vehicle body and extends in a substantially vertical direction. The first wall portion 12 extends from the both ends of the top portion 11 to the vehicle body inward side. 2 wall portions 13. The top part 11, the first wall part 12, and the second wall part 13 are integrally formed of a plate material.

  According to the above configuration, the outer structure 1 can be easily manufactured, and the structure of the outer structure 1 can be simplified.

  In the embodiment described above, the vehicle structure 10 is applied to a car locker (side sill). However, the vehicle structure 10 is not limited to a rocker, and requires a shock absorption such as a floor structure or a pillar. Widely applied to structures.

  In the above-described embodiment, the vehicle structure 10 is described by taking an automobile structure as an example. However, the present invention is not limited to the automobile structure, and can be applied to any vehicle structure. .

  In the above embodiment, one side is the vehicle body inner side and the other side is the vehicle body outer side, but one side may be the vehicle body outer side and the other side may be the vehicle body inner side. Further, although the one side structure is an inner structure and the other side structure is an outer structure, the one side structure may be an outer structure and the other side structure may be an inner structure.

  The present invention is not limited to the configuration described in the above embodiment, and can include various modifications that can be considered by those skilled in the art without departing from the content described in the claims.

1 Outer structure
10 Vehicle Structure 11 Top
12 First wall
13 Second wall
14 1st rib part
15 Second rib part
141 Third rib
142 4th rib
16 5th rib
17 6th rib
18 7th rib
2 Inner structure
21 Top
21a First top
21b Second top
22 First wall
23 Second wall
24 First flange
25 Second flange
31 First tab
31a One end
31b Bent part
31c The other end
32 Second tab
32a one end
32b bent part
32c The other end
91 closed space
92 closed space
93 closed space

Claims (6)

A steel one-side structure located on one side of the vehicle body outward side or inward side; and
A vehicle structure comprising: the vehicle body outer side or the other side of the inner side, and the other side structure joined to the one side structure,
The other side structure has a top made of an aluminum alloy protruding to the other side;
An aluminum alloy wall extending from the both ends of the top to the one side,
And a steel tab portion attached to an end portion of the wall portion, extending outward of the other side structure, and joined to the one side structure. Structure.
One end portion of the tab portion is attached to an end portion of the wall portion, extends from the one end portion to the bent portion on the one side, bends toward the outside of the other side structure at the bent portion, and the like. The vehicle structure according to claim 1, wherein the vehicle structure reaches the end.
In a cross section perpendicular to the longitudinal direction of the other side structure,
The vehicle structure according to claim 1 or 2, wherein the other side structure has one or more closed spaces formed in at least a part of the other side.
The vehicle structure according to claim 3, wherein at least one closed space of the closed space extends to the one side, and an end surface of the one side is adjacent to the one side structure.
The tab portion is made of a high-strength steel plate,
The structure for vehicles according to any one of claims 1 to 4 whose tensile strength of said high-strength steel plate is 590MPa or more.
The top part and the wall part are made of an extruded material of an aluminum alloy,
The vehicle structural body according to any one of claims 1 to 5, wherein a thickness of at least a part of the top part or the wall part is thicker than a thickness of other parts.

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