JP4193524B2 - Rear body structure of the vehicle - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rear body structure of a vehicle.
[0002]
[Prior art]
As a conventional technique in the rear body structure of a vehicle, there is known a rear pillar structure in which a seat belt retractor is housed (Patent Document 1). As shown in FIG. 7, an opening 108 is formed in the rear pillar inner 102, a peripheral wall 108A is extended toward the rear pillar outer 103 side at the peripheral edge, and the flange 108a of the peripheral wall 108A is connected to the rear pillar inner 102. The box portion 120 is formed by bonding to the pillar reinforcement 104 bonded to the back surface of the upper portion, and the seat belt retractor 109 is accommodated in the box portion 120 so that the upper and lower end portions 111a and 111b of the bracket 111 are the upper and lower peripheral portions of the opening portion 108 It is fastened and fixed to.
[0003]
As described above, in the structure disclosed in Patent Document 1, there is a possibility that the rigidity of the rear pillar is lowered from the position where the opening is provided in the rear pillar inner. Furthermore, the housing part of the seat belt retractor is formed by providing a peripheral wall from the opening to the outside of the vehicle and joining the peripheral wall to the pillar reinforcement to form a box part. In addition to being complicated, it has a structure that may cause problems such as water intrusion from the opening formed in the rear pillar inner and noise increase.
[0004]
Further, as another conventional technique, a structure in which a striker for fixing a seat back is provided at a vehicle front portion of a seat back support extending upward from a rear wheel house is generally known (Patent Document 2). reference).
[0005]
As described above, as can be seen from Patent Document 1 and Patent Document 2, as conventional techniques, the seat belt retractor necessary for the vehicle and the striker mounting portion for fixing the seat back have been separated.
[0006]
On the other hand, the suspension tower, which is an important part of the vehicle body structure despite being in the vicinity of the rear pillar, has no relationship with the seat belt retractor and the striker mounting part for fixing the seat back. Structure is adopted.
[0007]
Therefore, there is a demand for a new structure that can integrate the functions of the seat belt retractor mounting structure, the striker mounting structure for fixing the seat back, and the structure for improving the strength and rigidity of the suspension tower. .
[0008]
[Patent Document 1]
JP-A-8-175424 [Patent Document 2]
Japanese Patent Laid-Open No. 2002-211145
[Problems to be solved by the invention]
As described above, the present invention provides a structure capable of consolidating the functions of the seat belt retractor mounting structure, the striker mounting structure for fixing the seat back, and the structure for improving the strength and rigidity of the suspension tower. At the same time, it is an object of the present invention to realize a rear vehicle body structure that can reduce costs associated therewith and prevent an increase in noise and water intrusion due to opening formation.
[0010]
[Means for Solving the Problems]
A first configuration of a rear body structure of a vehicle according to the present invention is a rear body structure of a vehicle having a rear pillar connecting a rear end side portion of a vehicle roof panel and a rear fender panel, and is a part of the rear pillar. A bracket for fixing the seatback of the rear seat is fixed to a rear pillar inner panel provided on the vehicle interior side, and the bracket has a flange fixed to the rear pillar inner panel at an outer end of the vehicle interior. , together with the walls of the tetrahedron toward the vehicle interior side from the flange has a substantially box-shape protruding, the vehicle interior side edge surface portion connecting the inner circumference of the cabin internal end definitive the wall portion And an opening formed by the vehicle interior side edge surface portion, and a space between the rear pillar inner panel and the vehicle interior side edge surface portion serves as a retractor accommodating portion. , In the bracket, a fixing member for fixing the seat back to the vehicle front side wall portion is fixed, the seat belt retractor for winding a rear seat occupant's seat belt to the retractor housing part is supported Is.
[0011]
According to the first configuration, the fixing member for fixing the seat back of the rear seat and the seat belt retractor for winding up the rear seat occupant seat belt are supported by the bracket fixed to the rear pillar inner. . Accordingly, the bracket is a fixing member for fixing the seat back of the rear seat and a common support member of the seat belt retractor for winding the seat belt for the rear seat occupant, and it is not necessary to separately provide these supporting members. A simple structure with a small number of parts enables cost reduction.
[0012]
Further, according to the first configuration, since the bracket is fixed to the rear pillar inner and has a structure protruding toward the vehicle interior side, it is not necessary to provide an opening in the rear pillar inner, and noise due to the opening formation is eliminated. Increase in water and water can be prevented.
[0013]
Bracket has a flange, with the flange is fixed to the rear pillar inner panel, and the wall portion of the tetrahedron which projects into the passenger compartment side, the vehicle interior side connecting inner periphery of the vehicle compartment inner end of the wall portion Since it has a structure having an edge surface portion, it has a highly rigid structure, and the support rigidity of the fixing member for fixing the seat back and the seat belt retractor for winding up the seat belt for the rear seat occupant is provided. Can be increased.
[0014]
In addition , an opening is formed in the vehicle interior side edge surface portion of the bracket, and it is possible to assemble the seat belt retractor and the seat back fixing member by using this opening portion. This can contribute to reduction and cost reduction.
[0015]
Second configuration according to the present invention, a folded surface extending toward the vehicle exterior side from the passenger compartment side edge surface portion is formed by a bottom portion closing the compartment outer side end portion of the folded surface, recessed in the outside of the vehicle with a recess but, in which said recess is a retractor housing part.
[0016]
According to a second configuration, because it is a structure having a recess that is recessed from the vehicle interior side edge surface portion to the outside of the vehicle, it has become extremely high rigid structure, a fixing member for fixing the seat back Further, the effect of increasing the support rigidity of the seat belt retractor for winding up the rear seat occupant seat belt can be achieved in addition to the effect of the first configuration.
[0017]
In the third configuration, the bracket is connected to the suspension tower member via a gusset member.
[0018]
According to the third configuration, since the bracket fixed to the rear inner panel is connected to the suspension tower member via the gusset member, the support rigidity of the bracket is increased. Further, since the load input from the suspension member disposed at the lower part of the suspension tower is transmitted and dispersed to the bracket via the gusset member, the suspension tower can be prevented from being deformed.
[0019]
A fourth configuration related to the present invention is a vehicle rear body structure having a rear pillar connecting a rear end side portion of a vehicle roof panel and a rear fender panel, and is provided inside the vehicle interior as a part of the rear pillar. A bracket for fixing the seat back of the rear seat is fixed to the rear pillar inner panel so as to protrude to the vehicle interior side, and the bracket is provided adjacent to the front of a suspension tower member provided to protrude from the rear pillar inner panel to the vehicle interior side. A flange that is fixed to the rear pillar inner panel, a suspension tower fixing flange that is fixed to a vehicle front surface portion of the suspension tower member, and a wall portion that protrudes toward the vehicle interior from the flange that is fixed to the rear pillar inner panel And the suspension tower member from the vehicle interior side end of the wall portion There is a vehicle interior side edge surface facing the fixing flange, and an opening formed in the vehicle interior side edge surface portion, and a space between the rear pillar inner panel and the vehicle interior side edge surface portion is a retractor accommodating portion. The bracket is fixed with a fixing member for fixing the seat back to the vehicle front side wall portion, and a seat belt retractor for winding the seat belt for the rear seat occupant is supported by the retractor accommodating portion. It is what.
[0020]
According to the fourth configuration, the bracket is continuously fixed from the rear pillar inner panel to the suspension tower member, and the wall portion protruding from the flange fixed to the rear pillar inner panel toward the vehicle interior side, and the vehicle on the wall portion. The support rigidity of the bracket can be increased since the vehicle interior side edge surface portion that faces the flange fixed to the suspension tower member from the indoor side end portion is provided.
[0021]
Further, according to the fourth configuration, since the load input from the suspension member disposed in the lower part of the suspension tower is transmitted to and distributed to the bracket, the suspension tower can be prevented from being deformed.
[0022]
Furthermore, according to the fourth configuration, an opening is formed in the vehicle interior side edge portion of the bracket, and it is possible to assemble the seat belt retractor and the seat back fixing member by using the opening. Therefore, it can contribute to reduction of assembly work man-hours and cost.
[0023]
According to a fifth configuration of the present invention, the fixing member is a striker that can be engaged with a latch provided on the back surface of the seat back.
[0024]
According to the fifth configuration, the fixing member fixed to the bracket is a striker that can be engaged with a latch provided on the back surface of the seat back, and it is necessary to store a complicated mechanism component such as a latch in the bracket. Since there is no, the attachment work can be simplified .
[0025]
【The invention's effect】
As described above, the present invention provides a structure capable of consolidating the functions of the seat belt retractor mounting structure, the striker mounting structure for fixing the seat back, and the structure for improving the strength and rigidity of the suspension tower. At the same time, it is possible to realize a rear vehicle body structure capable of reducing the costs associated therewith and preventing an increase in noise and water intrusion due to opening formation.
[0026]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS.
[0027]
FIG. 1 is a diagram showing a first embodiment of a rear structure of a vehicle according to the present invention. In FIG. 1, the vehicle 1 has a rear pillar 3 having a rear pillar outer panel 17 and a rear pillar inner panel 19 disposed on the vehicle interior side from the rear pillar outer panel 17 in the rear structure. A suspension tower 7 that protrudes from the rear pillar inner panel 19 toward the vehicle interior side and supports an upper portion of a suspension member (not shown) disposed below the rear wheel house 5 is formed at the upper portion of the rear wheel house 5. . A bracket 9 is fixed to the vehicle front portion of the suspension tower 7 so as to protrude from the rear pillar inner panel 19 toward the vehicle interior side, and a striker 11 for fixing the seat back of the rear seat is fixed to the front wall portion of the bracket 9. It is like that.
[0028]
2 is a detailed view of the first embodiment shown in FIG. 1, FIG. 2 (A) is a perspective view of the suspension tower 7 and the bracket 9 from the vehicle interior side, and FIG. 2 (B) is FIG. It is X1-X1 sectional drawing in (A).
[0029]
As can be seen from FIGS. 2A and 2B, the suspension tower 7 and the bracket 9 are fixed to the rear pillar inner panel 19. In the figure, the mark X indicates that it is fixed by welding.
[0030]
As shown in FIG. 2 (B), the rear pillar inner panel 19 is fixed to the rear pillar outer panel 17 at the front end portion thereof, and is a recessed portion protruding toward the vehicle outer side at a predetermined distance from the fixed portion. 19a is formed and further extends rearward.
[0031]
A flange 7 f formed on the suspension tower 7 is fixed to the rear portion of the rear pillar inner panel 19.
[0032]
A bracket 9 is fixed to the rear pillar inner panel 19 in front of the suspension tower 7. Here, the position where the bracket 9 is fixed is a position where the above-described recess 19a formed in the rear pillar inner panel 19 can be covered.
[0033]
Next, the shape of the bracket 9 will be described in detail. As shown in FIGS. 2A and 2B, the bracket 9 includes a flange 9f fixed to the rear pillar inner panel 19, and four wall portions (from the flange 9f toward the vehicle interior side). A projecting portion 10 formed by a front side wall portion 9a, an upper wall portion 9u, a lower wall portion 9i, and a rear side wall portion 9b), a vehicle interior side edge surface portion 9c connecting these four wall portions, and the vehicle interior side edge It has the opening part 9k formed by the surface part 9c, and the retractor fixing | fixed part 9e (refer FIG. 4) drooping from the lower wall part 9i, and is integrally formed by press molding.
[0034]
As can be seen from FIG. 2 (B), the space formed between the vehicle interior side edge surface portion 9c of the bracket 9 and the recess portion 19a of the rear pillar inner panel 19 serves as a retractor accommodating portion 23, and the seat belt retractor is formed. 13 (hereinafter referred to as the retractor 13) is accommodated.
[0035]
Furthermore, the striker 11 which fixes the seat back S of a rear seat is being fixed to the bracket 9 at the front side wall part 9a. That is, the striker 11 is fixed to the front side wall portion 9a in a state of protruding in a U-shape in the vehicle front direction, and can be engaged with and disengaged from the latch member 21 provided inside the back side of the seat back S. .
[0036]
A sectional view taken along the line Y1-Y1 in FIG. 2A showing the attachment structure of the retractor 13 will be described together with a second embodiment to be described later.
[0037]
Although the first embodiment has been described above, the retractor 13 is provided on the vehicle interior side without forming an opening in the rear pillar inner panel 19, so that noise and water can be prevented from entering.
[0038]
The retractor 13 is accommodated in a retractor accommodating portion 23 between the bracket 9 and the recessed portion 19 a of the rear pillar inner panel 19 and the striker 11 that fixes the seat back S of the rear seat to the front side wall portion 9 a of the bracket 9. Is fixed, that is, the bracket 9 has a common part structure for fixing and supporting these parts, so that no individual parts are required, the structure is simplified, and the cost can be reduced.
[0039]
Furthermore, as shown in FIG. 2 (B), the front side wall portion 9a of the bracket 9 has a structure that makes surface contact with the back surface of the seat back S, so that the load on the seat back of the occupant of the rear seat can be reduced. It can also be supported.
[0040]
Next, a second embodiment will be described. FIG. 3 is a diagram showing a second embodiment. 3A is a perspective view from the vehicle interior side, and FIG. 3B is a cross-sectional view taken along line X2-X2 in FIG.
[0041]
The second embodiment is a structure in which the bracket 9 and the suspension tower 7 are connected by a gusset member in the first embodiment. Accordingly, the reference numerals in the figure are the same as those in FIG. 2 showing the first embodiment. The description of the second embodiment with reference to FIG. 3 will be made only on portions that are different from the first embodiment.
[0042]
As shown in FIGS. 3A and 3B, the second embodiment is provided with a gusset member 15 for connecting and fixing the bracket 9 and the suspension tower 7 together.
[0043]
More specifically, the gusset member 15 includes an upper surface portion 15b, a suspension tower upper surface portion fixing flange 15d that is formed at the rear end of the upper surface portion 15b and fixes the upper surface portion 7a of the suspension tower 7, and a vehicle interior side edge of the bracket 9. A panel portion 15a that is fixed to the rear surface of the surface portion 9c and extends rearward of the vehicle, and a suspension tower front side member fixing that is bent toward the vehicle interior side from the rear end of the panel portion 15a and is fixed to the front side member 7b of the suspension tower 7. It has a flange 15c for use and is integrally formed by press molding.
[0044]
Thus, in addition to the first embodiment, in the second embodiment in which the gusset member 15 for connecting and fixing the suspension tower 7 and the bracket 9 is provided, a load is input from the suspension member to the suspension tower 7. However, since the load is transmitted and distributed to the gusset member 15 and the bracket 9, the suspension tower can be prevented from being deformed.
[0045]
Alternatively, the bracket 9 is connected to the suspension tower 7 via the gusset member 15, and the support rigidity of the bracket 9 is enhanced compared to the first embodiment.
[0046]
Next, the retractor support structure in the first and second embodiments will be described with reference to FIG. FIG. 4 shows a Y1-Y1 cross section in FIGS.
[0047]
According to FIG. 4, the retractor 13 includes a winding part 13a and a support member 13b (see FIGS. 2B and 3B), and the end part of the seat belt SB is fixed to the winding part 13a. The seat belt SB extends through the opening 9k provided in the bracket 9 and extends upward.
[0048]
An extending portion 13 c extending downward from the support member 13 b is provided, and is supported and fixed by a fastening member T to a retractor fixing portion 9 e provided on the bracket 9.
[0049]
As can be seen from FIG. 4, even if the bracket 9 is fixed to the rear pillar inner panel 19 in advance, if the nut member is first fixed to the extending portion 13c, the retractor 13 is placed in the retractor receiving portion 23 through the opening 9k. The retractor fixing portion 9e and the extending portion 13c may be aligned and fixed by the fastening member T, so that the assembling is simple, leading to reduction in the number of assembling work steps and cost. Similarly, the striker 11 fixed to the front side wall portion 9a of the bracket 9 is also easy to assemble, leading to a reduction in assembly work man-hours and cost.
[0050]
Next, a third embodiment will be described. The brackets in the first and second embodiments have different shapes with respect to the formation of openings and the like. This third embodiment shows a structure in which a bracket and a suspension tower are connected by a gusset member as in the second embodiment, but the presence or absence of the gusset member is not limited.
[0051]
5A and 5B are views showing a third embodiment. FIG. 5A is a perspective view of the bracket, FIG. 5B is a cross-sectional view along Y2-Y2 in FIG. 5A, and FIG. FIG. 3 is a cross-sectional view similar to FIG.
[0052]
As shown in FIGS. 5 (A), 5 (B), and 5 (C), the bracket 39 in the third embodiment includes a flange 39f fixed to the rear pillar inner panel 19, and a flange 39f. Projecting part 40 formed by four wall parts (front side wall part 39a, upper wall part 39u, lower wall part 39i, rear side wall part 39b) extending and projecting from the vehicle interior side, A vehicle interior side edge surface portion 39c that faces the vehicle interior side at the vehicle interior side end portion, a folded surface portion 39d that is folded back from the vehicle interior side edge surface portion 39c and extends outward from the vehicle interior, and a vehicle interior outer end portion of the folded surface portion 39d And a retractor support portion 39e that hangs down from the lower wall portion 39i, and is integrally formed by press molding.
[0053]
Therefore, the bracket 9 in the first and second embodiments is different in structure in that it has a folded surface portion 39d and a bottom surface portion 39g. That is, as can be seen from FIGS. 5 (A), 5 (B), and 5 (C), the bracket 39 has a recess 37 having a bottom surface 39g. And this recessed part 37 is used as a retractor retractor accommodating part.
[0054]
FIG. 5B is a sectional view taken along the line Y2-Y2 of FIG. 5A, and shows a structure for supporting and fixing the retractor 13 and the bracket 39. According to this, the extending portion 13c extending downward from the support member 13b of the retractor 13 is inserted into the opening 39h formed on the lower surface of the folded surface portion 39d of the bracket 39, and then the retractor support portion 39e of the bracket 39. And fixed by a fastening member (not shown).
[0055]
As described above, the opening 9k is formed in the brackets of the first and second embodiments, whereas the bracket in the third embodiment is formed from a three-dimensional recess. The structure is higher in rigidity, and accordingly, it is difficult to be deformed even when a load from the suspension tower side or a load from the seat back S side is applied.
[0056]
The striker 11 for fixing the seat back S is provided on the front side wall portion 39a of the bracket 39, and the panel portion 15a of the gusset member 15 is the rear portion of the vehicle interior side edge surface portion 39c of the bracket 39. Since the structure connecting the suspension member 7 and the front member 7b of the suspension tower 7 is the same as that of the second embodiment, the detailed description is omitted.
[0057]
Next, a fourth embodiment will be described with reference to FIG. 6A is a perspective view from the vehicle interior side, and FIG. 6B is an X3-X3 cross-sectional view in FIG.
[0058]
As shown in FIG. 6A, in the fourth embodiment, the rear pillar inner panel 49 is formed with a recess 49a shaped so that its rear part is along the front member 7b of the suspension tower 7. The bracket 45 having a shape covering the hollow portion 49 a is fixed from the rear pillar inner panel 49 to the suspension tower 7.
[0059]
Specifically, the bracket 45 includes a flange 45f fixed to the periphery of the recess 49a of the rear pillar inner panel 49, an upper wall 45g extending from the flange 45f toward the vehicle interior side, and a rear end of the upper wall 45g. A flange 45b formed in a shape along the front member 7b of the suspension tower 7 from the vehicle interior side portion of the suspension portion, a wall portion composed of the front side wall portion 45a and the like, and a vehicle interior side end portion of these wall portions on the vehicle interior side A vehicle interior side edge surface portion 45c facing the vehicle interior side, an opening 45k formed in the vehicle interior side edge surface portion 45c, and an extending surface portion 45d extending obliquely downward and outward from the lower portion of the vehicle interior side edge surface portion 45c. It is integrally formed by press molding.
[0060]
That is, the flange 45f is fixed to the rear pillar inner panel 49, the rear end portion of the upper wall portion 45g is fixed to the upper surface member 7a of the suspension tower 7, and the flange 45b is fixed to the front portion member 7b of the suspension tower 7.
[0061]
The retractor 13 is accommodated in the retractor accommodating portion 43 between the outer side of the vehicle interior side edge surface portion 45c and the rear pillar inner panel 49. In each of the first, second, third, and fourth embodiments, the structure in which the recess is provided in the rear pillar inner panel has been described. However, the present invention is not limited to this. It is not necessary to provide the depression.
[0062]
As described above, in the fourth embodiment, since the bracket is extended to the rear so that the bracket can be connected to the suspension tower without separately providing a gusset member, the load input to the suspension tower is dispersed. While it is possible to prevent the suspension tower member from being deformed and to receive the load from the seat back S, it has the same effect as the second embodiment, but has a lower cost structure than the second embodiment. be able to.
[0063]
Although not shown in the drawings, in the fourth embodiment, the support member 13b of the retractor 13 is provided with the extended portion 13c as in the previous embodiment, and is provided on the extended surface portion 45d of the bracket 45. The mounting hole h is used to fix and support the fastening member.
[Brief description of the drawings]
FIG. 1 is a diagram showing a rear structure of a vehicle according to the present invention. FIG. 2 is a diagram showing a first embodiment. FIG. 3 is a diagram showing a second embodiment. The figure which shows the attachment structure of the retractor in embodiment of FIG. 5 [FIG. 5] The figure which shows 3rd embodiment [FIG. 6] The figure which shows 4th embodiment [FIG. 7] The figure which shows prior art Explanation of]
7 ... Suspension towers 9, 39, 45 ... Brackets 9a, 39a, 45a ... Front side wall portions 9c, 39c, 45c ... Car interior side edge surface portions 9f, 39f, 45f ... Flange 9k, 39k ... Openings 10, 40 ... Projection 11 ... Strike 12 ... Latch 13 ... Retractor 19, 49 ... Rear pillar inner panels 23, 43 ... Retractor housing part 37 ... Recess (retractor accommodating part in the third embodiment)
S ... Seat back

Claims (5)

A vehicle rear body structure having a rear pillar connecting a rear end side portion of a vehicle roof panel and a rear fender panel,
A bracket that protrudes toward the vehicle interior side and attaches a seat back of the rear seat is fixed to a rear pillar inner panel provided on the vehicle interior side as a part of the rear pillar,
The bracket has a flange that is fixed to the rear pillar inner panel at the outer end of the vehicle compartment, and has a substantially box shape with four wall portions protruding from the flange toward the vehicle interior side. A vehicle interior side edge surface portion connecting the inner periphery of the vehicle interior side end portion of the wall portion; and an opening formed by the vehicle interior side edge surface portion; and the rear pillar inner panel and the vehicle interior side edge surface portion. The space between and is the retractor housing,
Above bracket, that the fixing member for fixing the seat back to the vehicle front side wall portion is fixed, the seat belt retractor for winding a rear seat occupant's seat belt to the retractor housing part is supported A vehicle body structure for a rear part of a vehicle. The vehicle according to claim 1, further comprising a recessed portion that is formed outwardly from the vehicle interior side edge surface portion and extends from the vehicle interior side to the vehicle interior outside and a bottom surface portion that covers the vehicle interior outside end portion of the folded surface portion. A vehicle body structure for a rear portion of a vehicle, wherein the recess is a retractor accommodating portion . According to claim 1 or 2, wherein the bracket is characterized in that it is connected to the suspension tower member through the gusset member, rear body structure of a vehicle. A vehicle rear body structure having a rear pillar connecting a rear end side portion of a vehicle roof panel and a rear fender panel,
A bracket that protrudes toward the vehicle interior side and attaches a seat back of the rear seat is fixed to a rear pillar inner panel provided on the vehicle interior side as a part of the rear pillar,
The bracket is provided adjacent to the front of a suspension tower member that protrudes from the rear pillar inner panel toward the vehicle interior side, and is fixed to a flange that is fixed to the rear pillar inner panel, and a vehicle front surface portion of the suspension tower member. A suspension tower fixing flange, a wall portion projecting from the flange fixed to the rear pillar inner panel to the vehicle interior side, and a vehicle interior facing the suspension tower member fixing flange from a vehicle interior side end portion of the wall portion An inner edge surface portion and an opening formed in the vehicle interior side edge surface portion, and a space between the rear pillar inner panel and the vehicle interior side edge surface portion is a retractor accommodating portion ,
A fixing member for fixing the seat back is fixed to the vehicle front side wall portion of the bracket, and a seat belt retractor for winding a seat belt for a rear seat occupant is supported by the retractor housing portion. A vehicle body structure for a rear part of a vehicle. 5. The rear body structure of a vehicle according to claim 1, wherein the fixing member is a striker that can be engaged with a latch provided on a back surface of the seat back. .

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