JP2001048051A - Vehicle rear structure - Google Patents

Abstract

(57) [Problem] To provide a vehicle rear structure which has good space efficiency and can easily obtain desired strength with a simple structure. A rear pillar outer having a substantially hat-shaped cross section is provided.
A vehicle rear structure in which the inner members 25 and 26 are joined at front and rear flange portions, a wheel house 29 is provided at the lower edge of the rear pillar 24, and a rear pillar reinforce member 28 having a substantially hat-shaped cross section bulging outward. is there. The rear pillar reinforce member 28 has a brace having a substantially U-shaped lower portion 36 formed integrally with an upper portion 35 extending upward in the rear pillar 24 and swelling outward in the vehicle direction. The member 34 is overlapped in the inside and outside of the vehicle body. A joining portion 36d where the front and rear wall portions 36b and 36c are joined to the front and rear wall portions 28b and 28c of the lower portion 36 is connected to a joining portion 31e where the wheel house outer and the upper end 31d of the inner members 30 and 31 are joined. It extends downward so as to straddle the upper and lower sides.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle rear structure having a rear hatch gate.

[0002]

2. Description of the Related Art As a conventional vehicle rear structure, there is known a structure as shown in FIGS.
No. 134577).

In such a vehicle 1, a rear portion 3 of a vehicle body 2
, A rear pillar member 6 is provided. The rear pillar member 6 includes a suspension tower 5 as a strut tower component supporting the rear suspension 4.
Are combined.

In the rear pillar member 6, a rear reinforcement member 6c extends vertically between a rear pillar inner panel 6a and an outer panel 6b.

The rear pillar inner panel 6a
A reinforcing member 7 is connected between the suspension tower 5 and the upper surface 5 a of the suspension tower 5.

In the sedan type vehicle 1 in which such a trunk room is independently formed in the rear part 3, a rear parcel sherif (not shown) extends in the vehicle width direction.

Next, the operation of this conventional example will be described.

In this conventional example, the vertical load applied from the rear suspension 4 is transmitted to the rear pillar member 6 via the reinforcing member 7 and transmitted to and absorbed by the rear parcel sherif. .

Further, other conventional vehicle rear structures include:
There is known a wagon-type vehicle 8 having a luggage compartment as shown in FIGS.
No. 156181).

In such a vehicle 8, a rear portion 10 of the vehicle body 9 is provided.
Further, a belt line reinforcement member 13 is joined to the outer side surface 14a of the rear inner panel 14 from the lower portion of the center pillar 11 to the lower portion of the rear pillar 12, so that a closed section 15 is formed.

As shown in FIG. 15, the quarter pillar 16 has a pillar outer member 16a having a substantially hat-shaped cross section.
And the pillar inner member 16b and the front and rear flange portions 1 respectively.
A horizontal closed section 20 is formed by joining at 6c and 16d. Among them, a pillar reinforcement member 17 having a substantially concave cross section is provided adjacent to the inner side surface in a concave portion in the pillar inner member 16b.

The front and rear flange portions 16c, 1 are connected to the wheel house member 18 located below and the lower portion of the quarter pillar 16 via the closed cross section 15.
They are connected by a suspension reinforcement member 19 interposed between 6d. The suspension reinforcement member 19 has a substantially hat-shaped cross section that bulges outward.

Next, the operation of the other conventional example will be described.

In the other conventional example, an input load from a suspension device (not shown) is transmitted to the quarter pillar 16 provided with the pillar reinforcement member 17 and the belt is connected via the closed section 15 to the belt. The power is transmitted to the line reinforcement member 13 and dispersed in the vehicle front-rear direction, and is absorbed by the rear inner panel 14.

[0015]

However, in the vehicle 1 of the prior art, a rear parcel sherif is provided at the rear portion 3 of the vehicle body 2 along the vehicle width direction to receive an input load from the suspension device. It is configured to be.

Further, in the other conventional vehicle 8, the rear parcel sherif cannot be provided since a rear hatch gate opening (not shown) is provided on the rear surface of the vehicle body 9. For this reason, the pillar reinforcement member 17 having a substantially concave cross section is disposed adjacent to the inner side surface of the recess of the pillar inner member 16b to increase the strength, and the belt line reinforcement members 13, 13 are connected to the quarter pillar 16b. , The input load from the suspension device is dispersed and the rear inner panel 14 is extended.
It is configured to be absorbed.

As described above, in the vehicle 8 having the rear hatch gate opening, the pillar reinforcement member 1 is provided.
In addition to the above, it was difficult to obtain sufficient rigidity unless the belt line reinforcement member 13 was provided.

Particularly, in a hatchback vehicle such as a three-door type in which a rear pillar extends around the periphery of a rear hatch opening, the rear parcel sherif extends in the vehicle width direction and extends in the vehicle front-rear direction. Since it is difficult to provide the belt line reinforce member 13, a reinforcing member having a predetermined weight must be used for reinforcement, and there is a problem that the weight increases.

Further, since the suspension reinforcement 19 has a shape that bulges outward, the upper part of the quarter pillar 16 shown in FIG. As described above, there is also a problem that the opening is deformed in the opening direction and it is difficult to contribute to the improvement of rigidity.

SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicle rear structure which solves the above-mentioned problems, has good space efficiency, and can easily obtain a desired strength with a simple structure.

[0021]

According to the first aspect of the present invention, a rear pillar outer member and a rear pillar inner member having a substantially hat-shaped cross section are joined at front and rear flange portions. A rear pillar having a horizontal closed section, and a lower pillar provided at a lower edge of the rear pillar,
In a vehicle rear structure including a wheel house including a wheel house outer member and a wheel house inner member, and a rear pillar reinforcement member having a substantially hat-shaped cross section provided inside the rear pillar and bulging outward, the rear pillar reinforcement is provided. With respect to the lower edge of the member, the front and rear flanges of the rear pillar reinforce member and the upper end flange of the wheel house outer member and the upper end flange of the wheel house inner member are arranged so that the upper end thereof is higher, The rear pillar reinforce member has a substantially U-shaped brace member bulging outward in the vehicle width direction and is superposed in the vehicle width direction, and the front and rear walls of the brace member are in front of the rear pillar reinforce member. The joint to be joined to the rear wall is located above the upper end of the joint,
It features a vehicle rear structure that is arranged to straddle below.

According to the first aspect of the present invention, of the front and rear walls of the brace member, the joints to be joined to the front and rear walls of the rear pillar reinforce member are the rear pillars. The front and rear flange portions of the reinforcement member and the upper end flange portions of the wheel house outer member and the wheel house inner member are arranged so as to extend upward and downward with respect to the upper end of the joint.

For this reason, the suspension input load in the vehicle width direction transmitted from the wheel house is a horizontal closed section formed by the rear pillar reinforce member and the brace member, and the input load is reduced in an advantageous shear direction. It is received by the receiving joint.

The suspension input load is transmitted to the upper portion of the rear pillar via the brace member and is absorbed by the entire rear pillar together with the rear pillar reinforce member provided inside the rear pillar.

Therefore, the rear pillar can efficiently absorb the suspension input load.

Moreover, since the brace member is superposed in the vehicle width direction on the rear pillar reinforce member provided inside the rear pillar, space efficiency is good, and a desired strength can be easily obtained with a simple structure. Therefore, the possibility of increasing the weight is reduced.

[0027] According to the second aspect of the present invention, an upper portion having a substantially flat plate shape is provided on the vehicle inner side of the rear pillar reinforce from the height corresponding to the upper portion of the brace member to the upper side of the rear pillar. The rear pillar reinforce member, which is extended and has a height corresponding to the upper portion, has a substantially hat-shaped opening bulging in the vehicle outer direction, and front and rear flange portions of the opening. Are joined to the front and rear edges of the upper portion, respectively.

According to the second aspect of the present invention, since the front and rear flange portions of the opening are connected by the flat upper portion, there is no possibility that the opening is deformed in the opening direction. .

As a result, the rear pillar is further suppressed from falling down, and a desired rigidity can be easily obtained.

According to the third aspect,
The vehicle rear structure according to claim 1, wherein the rear pillar extends around a periphery of a rear hatch opening.

According to the third aspect of the present invention, the rear pillar having a desired rigidity capable of effectively receiving a suspension input load is extended around the periphery of the rear hatch opening. There is no need to provide the rear parcel sherif and the belt line reinforce member, etc., and an increase in weight is suppressed.

Accordingly, the present invention is suitable for use in, for example, a hatchback car of a three-door type or the like, which has an opening at the rear portion of the vehicle body, and in which it is difficult to secure a space for disposing a reinforcing member.

[0033]

First Embodiment A first embodiment of the present invention will be described below with reference to the drawings.

FIGS. 1 to 11 show a first embodiment of the present invention. Parts that are the same as or equivalent to those in the conventional example will be described with the same reference numerals.

First, the structure will be described. In the vehicle rear structure of the first embodiment, a three-door type hatchback car 21 employs a four-wheel drive system, so that the driving force is also applied to the rear wheel axle by the front engine. It uses what is transmitted from.

A pair of rear pillars 24, 24 are provided at the rear portion 23 of the body 22 of the hatchback vehicle 21. The rear pillars 24 extend vertically along both side edges forming a peripheral edge of the rear hatch opening, and are inclined at a predetermined angle toward the front of the vehicle.

Wheel houses 29, 29 are located below the rear pillars 24, 24, and the rear pillars 24 are mainly constructed by extending upward from the upper surfaces of the wheel houses 29, 29. .

The rear pillar 24 is formed by connecting a pillar outer member 25 and a pillar inner member 26 having a substantially hat-shaped cross section to front and rear flange portions 25a, 25b, and 2 respectively.
6a and 26b are joined to form a horizontal closed section 27. The horizontal closed section 27 has a predetermined closed cross-sectional area for inserting a harness, a washer tube, a sunroof drain hose, and the like (not shown).

In the recess inside the pillar inner member 26,
A rear pillar reinforce member 28 that protrudes outward and has a substantially hat-shaped cross section is provided.

The wheel house 29 provided on the lower edge of the rear pillar 24 is mainly composed of a wheel house outer member 30 and a wheel house inner member 31.

Of these, the wheel house inner member 31
As shown in FIG. 1, a strut tower portion 31b which swells upward from the wheel house main body 31a and accommodates the rear suspension 4 and has a peripheral edge of the wheel house main body 30a of the wheel house outer member 30 The flange portion 31c to be joined to the flange portion 30b is integrally provided. These flange portions 30b, 31
In c, the upper ends 30c and 31d are configured to have a joint portion 31e located a predetermined distance h above the outer peripheral edge of each of the wheel house bodies 30a and 31a.

The rear pillar reinforce member 28 has a lower flange portion 28a connected to the upper surface of the wheel house main body 30a, and extends upward from the lower flange portion 28a to protrude outward. Before and after the formation of the concave portion, there are a rear wall portion and a side wall portion 28b, 28c, 28d, and a front flange portion 28e, 28f extending from the front and rear wall portions 28b, 28c in the front-rear direction. I have. As shown in FIG. 4, the side edges of the front and rear flange portions 28e and 28f are connected to the front and rear flange portions 25a and 25b, respectively.
And 26a, 26b.

The front, rear and side walls 2
8b, 28c, and 28d form a substantially hat-shaped opening 28h that swells outwardly of the vehicle.

A plurality of substantially circular or elliptical lightening openings 28i are formed in the side wall portion 28d.

Further, in the first embodiment, as shown in FIG. 3, the rear pillar reinforce member 28 moves forward near the waistline 25c of the pillar outer member 25 such that the rear pillar reinforce member 28 has a U shape in a vehicle side view. It is bent at a predetermined angle α, and on the extension of the ridge line 28g, inside the pillar inner member 26, a bracket 3 as shown in FIG.
A rear seat belt anchor bracket 33 is provided via 3a.

A brace member 34 is provided inside the rear pillar reinforce member 28 so as to overlap in the vehicle width direction.

The brace member 34 includes an upper portion 35 extending upward in the rear pillar 24 and a substantially U-shaped member formed integrally with the upper portion 35 and swelling outward. And a lower portion 36 having the following configuration.

The upper portion 35 has a substantially flat plate shape as shown in FIG. 4 and has a height corresponding to the upper portion 35 in front of an opening 28h formed in the rear pillar reinforce member 28. , Rear flange portions 28e, 28f
The space is joined to the front and rear edges 35a, 35b of the upper portion 35, respectively.

As shown in FIG. 7, the lower portion 36 has a substantially U-shaped horizontal cross section by a swelling surface portion 36a and front and rear wall portions 36b and 36c. A joining portion 36d joined to the rear wall portions 28b and 28c extends downward from a position where the upper portion 35 is continuously provided. This joint 36d
The upper and lower ends of the front and rear flanges 28e and 28f of the rear pillar reinforce member and the upper ends 30c and 31d of the flanges 30b and 31c of the wheel house inner member 31 are joined in the vertical direction. It is configured to straddle above and below the joining portion 31e.

In the lower portion 36, the swelling surface portion 36a is closed horizontally in the vehicle width direction from the position where the wheel house outer member 30 is joined to the pillar inner member 26, etc., in the vehicle width direction. It is configured to be located within the cross section 27.

A substantially oval lightening opening 36e is formed in the swelling surface 36a of the lower portion 36. Further, in the first embodiment, as shown in FIG. 9, near the upper end edge of the rear pillar reinforce member 28, a flat bracket 38 to which the shoulder anchor member 37 is attached is provided with front and rear flange portions 38a, 38a. 38b before,
The mounting surface 38c is provided adjacent to the inner side surface of the pillar inner member 26 and is adjacently disposed to the rear flange portions 28e and 28f.

Next, the operation of the first embodiment will be described.

In the vehicle rear structure according to the first embodiment, the front of the lower portion 36 of the brace member 34, the rear wall portion 36b,
36c, the rear pillar reinforce member 28
36d joined to the front and rear walls 28b, 28c
The front and rear flanges 28e and 28f of the rear pillar reinforce member 28 and the upper ends 30c and 3 of the wheel house outer member 30 and the wheel house inner member 31, respectively.
It is disposed so as to straddle above and below the upper end of the joint portion 31e where the joint 1d is joined.

Therefore, the suspension input load in the vehicle width direction transmitted from the wheel house 29 is limited to the rear pillar reinforcement member 28 and the brace member 34.
And the joint 36d which receives the input load in an advantageous shear direction, formed by the horizontal closed cross section 27 formed by.

As shown in FIG. 7, the bulging surface portion 36a
However, since the wheel house outer member 30 is located in the horizontal closed cross section 27 on the vehicle outer side with an interval w in the vehicle width direction from the position where the wheel house outer member 30 is joined to the pillar inner member 26 and the like, At the position, a double closed horizontal section 27 shape is formed, and bending deformation near the waistline 25c of the pillar outer member 25 is suppressed.

The suspension input load is
Along with the rear pillar reinforce member 28 provided inside the rear pillar 24, the lower part 36 of the brace member 34 is transmitted to the rear pillar 24 via the integrally provided upper part 35 and is absorbed by the rear pillar 24.

Therefore, the rear pillar 24 can efficiently absorb the suspension input load.

Further, the brace member 34 is superposed on the rear pillar reinforce member 28 provided inside the rear pillar 24 in the vehicle width direction, and
Since it is located within the internal horizontal closed section 27, space efficiency is good. Thus, the brace member 34
Since the desired strength can be easily obtained with a simple structure in which is added, the possibility of increasing the weight is reduced.

Further, as shown in FIG.
Before and after h, before and after flange portions 28e, 28f
Are the front and rear edges 35a, 3 of the flat upper portion 35.
5b, and are connected by the upper portion 35, there is no possibility that the opening 28h is deformed in the opening direction.

In the first embodiment, the upper opening 28h of the rear pillar reinforce member 28 is
Front and rear flange portions 38a of the flat bracket 38,
38b is connected to the front and rear flange portions 28e and 28f by being joined to the front and rear flange portions 28e and 28f.
There is no danger that h will be deformed in the opening direction.

Therefore, the rear pillars 24, 24 are further suppressed from falling inward, and a desired rigidity can be easily obtained.

Then, on the periphery of the rear hatch opening,
Since the rear pillars 24, 24 having desired rigidity capable of effectively receiving the suspension input load are extended left and right, the rear parcel shelves and
It is not necessary to provide another reinforcing member such as the belt line reinforcement member, and an increase in weight is suppressed.

Accordingly, the present invention is suitable for use in, for example, a three-door type hatchback car 21 or the like having an opening at the rear part of the vehicle body and in which it is difficult to secure a space for disposing the reinforcing member.

Further, in the first embodiment, the rear pillar reinforce member 28 is bent forward by a predetermined angle α in the vicinity of the waistline 25a of the pillar outer member 25 so as to form a letter in a vehicle side view. , Ridge line 2
Rear seat belt anchor bracket 3 on extension line of 8g
3 are provided.

For this reason, even if the lower portion 36 of the brace member 34 is connected to the upper surface of the wheel house main body 30a of the wheel house outer member 30 by avoiding the rear seat belt anchor bracket 33, the seat belt tensioning force is reduced. Acting in the direction in which the rear pillar 24 extends, the support rigidity can be improved. Further, since the bracket 33a as shown in FIG. 10 is disposed inside the pillar inner member 26, the pillar inner member 2
6, there is no need to form an opening for seat belt insertion,
Also in this regard, a decrease in the rigidity of the rear pillar 24 can be suppressed.

Although the first embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to the first embodiment, and there are design changes and the like without departing from the gist of the present invention. Even this is included in the present invention.

For example, in the vehicle rear structure according to the first embodiment, the flat bracket 38 on which the shoulder anchor member 37 is mounted has front and rear flange portions 38a and 38b attached to the front and rear flange portions 28e and 28f. Although it is provided in a joined state, it is not particularly limited to this, and one or both of
The rear flange portions 38a and 38b are bent outward as shown by a two-dot chain line in FIG. 9, and the front and rear wall portions 28b and 38b are bent.
28c may be inscribed and joined.

In the first embodiment, the upper part 3
5 is formed integrally with the brace member 34, but even if it is formed separately, a substantially flat plate is formed on the vehicle interior of the rear pillar reinforce 28 from the height corresponding to the upper part of the brace member 34 to the upper side of the rear pillar 24. Upper part 35 having a shape
Should be extended.

Further, in the first embodiment, the description has been made using the three-door type hatchback vehicle 21. However, the present invention is not limited to this. For example, the periphery of the rear hatch opening such as a five-door type hatchback vehicle may be used. It is only necessary to have rear pillars 24, 24 extending along the vertical direction on both side edges to constitute the hatch, and the hatch is opened in any direction such as a horizontal opening hatch or an upper opening hatch. It may be something.

[0070]

As described above, according to the first aspect of the present invention, of the front and rear walls of the brace member, the front and rear walls of the rear pillar reinforce member are joined to each other. The upper and lower flanges are arranged so as to extend upward and downward with respect to an upper end of a joint where the front and rear flanges of the rear pillar reinforce member and the upper end flanges of the wheel house outer member and the wheel house inner member are joined. ing.

For this reason, the suspension input load in the vehicle width direction transmitted from the wheel house is a horizontal closed cross section formed by the rear pillar reinforce member and the brace member, and the input load is changed in an advantageous shear direction. It is received by the receiving joint.

The suspension input load is transmitted to the upper portion of the rear pillar via the brace member and is absorbed by the entire rear pillar together with the rear pillar reinforce member provided inside the rear pillar.

For this reason, the rear pillar can efficiently absorb the suspension input load.

Moreover, since the brace member is superposed in the vehicle width direction on the rear pillar reinforce member provided inside the rear pillar, space efficiency is good, and a desired strength can be easily obtained with a simple structure. Therefore, the possibility of increasing the weight is reduced.

According to the second aspect of the present invention, since the front and rear flanges of the opening are connected by the flat upper part, there is no possibility that the opening is deformed in the opening direction.

Therefore, the rear pillar is further suppressed from falling down, and a desired rigidity can be easily obtained.

And, according to the third aspect,
Since the rear pillar having a desired rigidity capable of effectively receiving a suspension input load is extended around the periphery of the rear hatch opening, it is necessary to provide the rear parcel sherif and the belt line reinforcement member and the like. No increase in weight is also suppressed.

Therefore, the present invention is suitable for use in, for example, a three-door type hatchback vehicle or the like, which has an opening at the rear of the vehicle body and in which it is difficult to secure a space for disposing the reinforcing member.
That is, it can exert a practically useful effect.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view illustrating an entire configuration of a vehicle rear structure according to a first embodiment of the present invention.

FIG. 2 is a side view of the vehicle body in the vehicle rear structure according to the first embodiment.

FIG. 3 is a side view illustrating a configuration of a main part of a rear portion of the vehicle body with a pillar outer member removed in the vehicle rear structure according to the first embodiment.

FIG. 4 is a vehicle rear structure according to the first embodiment, which is taken along a line AA in FIG. 2;
It is sectional drawing in the position along the line.

FIG. 5 is a rear view of the vehicle according to the first embodiment, taken along line BB in FIG. 3;
It is sectional drawing in the position along the line.

FIG. 6 is a side view of a brace member in the vehicle rear structure according to the first embodiment.

FIG. 7 is a vehicle rear structure according to the first embodiment, which is taken along line CC in FIG. 3;
It is sectional drawing in the position along the line.

FIG. 8 is an enlarged sectional view of a main part of the vehicle rear structure according to the first embodiment.

9 is a vehicle rear structure according to the first embodiment, which is taken along a line DD in FIG. 3;
It is sectional drawing in the position along the line.

FIG. 10 is a vehicle rear structure according to the first embodiment, which is indicated by E- in FIG. 3;
It is sectional drawing in the position along E line.

FIG. 11 is a side view of a conventional vehicle.

FIG. 12 shows a rear structure of a conventional vehicle, which is indicated by F- in FIG.
It is sectional drawing in the position along F line.

FIG. 13 is a side view of another conventional vehicle.

FIG. 14 is a perspective view for explaining a configuration of a main part of a rear portion of a vehicle body with a rear outer panel member removed in another conventional vehicle rear structure.

FIG. 15 shows a rear structure of another conventional vehicle, which is indicated by G in FIG.
It is sectional drawing in the position along the -G line.

[Explanation of symbols]

 REFERENCE SIGNS LIST 21 hatchback car (vehicle) 22 body 23 rear 24 rear pillar 25 pillar outer member 25 a front flange 25 b rear flange 26 pillar inner member 26 a front flange 26 b rear flange 27 horizontal closed section 28 rear pillar reinforce member 28 b front wall 28 c Wall portion 28h Opening portion 29 Wheel house 30 Wheel house outer member 30c Upper end (upper end flange portion) 31 Wheel house inner member 31d Upper end (upper end flange portion) 31e Joining portion 34 Brace member 35 Upper portion 35a Front edge 35b Rear edge 36 Lower part 36b Front wall part 36c Rear wall part 36d Joined part

Claims (3)

[Claims] A rear pillar outer member and a rear pillar inner member having a substantially hat-shaped cross-section are joined at front and rear flange portions to form a horizontal closed cross-section; and a wheel provided at a lower edge of the rear pillar. A vehicle rear structure including a wheel house including a house outer member and a wheel house inner member, and a rear pillar reinforce member having a substantially hat-shaped cross section provided inside the rear pillar and bulging outward, the rear pillar reinforce member The front and rear flanges of the rear pillar reinforce member and the upper end flanges of the wheel house outer member and the wheel house inner member are arranged such that the upper end thereof is higher than the lower edge of the rear pillar reinforce member; The reinforcement member has a substantially U-shaped bulge swelling outward. The race members are overlapped in the vehicle width direction, and the front and rear walls of the brace members are in front of the rear pillar reinforce member.
A vehicle rear structure, wherein a joint portion to be joined to a rear wall portion is disposed so as to straddle above and below an upper end of the joint portion. 2. An upper portion having a substantially flat plate shape is provided inside the rear pillar reinforcement from the height corresponding to the upper portion of the brace member toward the upper side of the rear pillar, and the upper portion corresponds to the upper portion. The height of the rear pillar reinforce member has a substantially hat-shaped opening bulging outwardly of the vehicle, and the front and rear flanges of the front pillar are connected to the front and rear edges of the upper. The vehicle rear structure according to claim 1, wherein the vehicle rear structure is joined to the vehicle. 3. The vehicle rear structure according to claim 1, wherein the rear pillar extends around a periphery of a rear hatch opening.