JP2010125916A - Vehicle rear part structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle rear part structure that can secure a sufficient supporting rigidity to a speaker and can effectively absorb an impact load associated with a rear collision or the like. <P>SOLUTION: The vehicle rear part structure includes a front bracket attaching part 10 in a rear part of a wheel housing 7, and a speaker attaching bracket 20 bridged between the front bracket attaching part 10 and a rear bracket attaching part 4c of a rear pillar 5, and for attaching and supporting a woofer speaker 31. First to fourth bending parts 22, 24, 26 and 28 vertically extending, are formed in the speaker attaching bracket 20. By forming the first to fourth bending parts 22, 24, 26 and 28, a rigidity of the speaker attaching bracket 20 increases, which allows the woofer speaker 31 to reproduce preferable acoustic. When an impact load P is input from the rear of a vehicle, the first to fourth bending parts 22, 24, 26 and 28 bend sequentially. Therefore, the speaker attaching bracket 20 is effectively corrupted so that the absorption of the impact load can be secured by a crush deformation of a vehicle frame without being affected by the speaker attaching bracket 20. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vehicle body rear structure, and more particularly to a wagon type vehicle body rear structure.

  In general, automobiles are provided with various car audios for the purpose of improving the indoor environment, particularly acoustic performance.

  Recently, car audio has been developed in response to the desire of users who want to enjoy a wide variety of sound quality. In addition to the usual main speakers, tweeter speakers that output high sounds and woofer speakers that output heavy bass are also available. Some are equipped.

  In particular, a large woofer speaker is required to reproduce heavy bass, and a large woofer speaker requires a mounting space. Therefore, in the case of a sedan type vehicle, for example, it is attached to a rear shelf. The rear shelf to which the woofer speaker is attached is vibrated by a relatively large vibration generated when a heavy bass sound is reproduced from the woofer speaker, and there is a concern about the generation of noise due to the vibration of the rear shelf. In addition, the rear shelf supporting the woofer speaker needs to have rigidity in order to exert the ability of the woofer speaker.

  For example, Patent Document 1 discloses a reinforcing structure of a rear shelf to which this type of woofer speaker is attached. In the rear shelf reinforcing structure of Patent Document 1, a front panel and a rear member for reinforcement extending in the vehicle width direction are provided on a center panel in which a woofer speaker mount portion of the rear shelf is formed, and a first extension extending in the front-rear direction is provided. 1 reinforcement part and 2nd reinforcement part are provided, and the rigidity of a rear shelf is ensured.

  On the other hand, unlike a sedan type vehicle, a wagon type vehicle does not have a rear shelf. Therefore, in order to install a woofer speaker in a space formed along the inside of the rear quarter panel, a wheel house and a rear pillar are provided. A speaker mounting bracket is installed between the speaker mounting bracket and the woofer speaker is mounted on the speaker mounting bracket.

JP 2007-99132 A

  In a wagon type vehicle, the space between the rear pillar and the wheel house at the rear of the vehicle body is an impact load absorption zone when an impact load is input from the rear due to a rear collision or the like, that is, a crash zone such as a vehicle body frame. Function.

  On the other hand, a woofer speaker that reproduces a powerful deep bass sound has a relatively large diameter, a large rigidity, and a large weight, and a large mounting rigidity is required for a speaker mounting bracket that supports the woofer speaker. If this rigid speaker mounting bracket is installed between the wheel house and the rear pillar, a wide range of rigidity from the rear pillar to the wheel house is strengthened more than necessary.

  As a result, as the rigidity between the wheel house and the rear pillar is increased by the speaker mounting bracket, when an impact load is input from the rear due to a rear collision or the like, the absorption of the impact load due to effective crushing deformation at the rear of the vehicle body is limited. . In particular, if the crash stroke of the vehicle body frame that absorbs a large amount of impact load due to crushing deformation is limited, there is a concern that it is difficult to efficiently absorb the impact load.

  In addition, in a vehicle in which a fuel supply pipe for injecting fuel into a fuel tank is disposed in the wheel house, a speaker mounting bracket that supports a heavy weight woofer speaker that is highly rigid with the deformation of the rear part of the vehicle body There is a high possibility that an impact load is directly input to the wheel house via the wheel, and when the wheel house is deformed, it causes fuel leakage due to damage of the fuel supply pipe or the like along with the deformation of the wheel house.

  Accordingly, an object of the present invention made in view of such a point is to provide a vehicle body rear structure that can secure sufficient support rigidity of a speaker and can efficiently absorb an impact load caused by a rear collision or the like.

  According to the first aspect of the present invention, which achieves the above object, a speaker mounting bracket is installed between the wheel house and the rear pillar along the inner side of the rear quarter panel, and the speaker is mounted and supported on the speaker mounting bracket. In the rear structure of the vehicle body, a front bracket mounting portion formed in the rear portion of the wheel house and extending in the vertical direction, a rear bracket mounting portion formed in the rear pillar, the front bracket mounting portion and the rear bracket mounting portion. A speaker mounting bracket that is installed between the front bracket mounting portion and the front bracket mounting portion. The front mounting portion extends in the vertical direction and is coupled to the front bracket mounting portion. A side part that is continuously formed at the rear end of the part and extends along the longitudinal direction of the vehicle body, and extends vertically at the rear end of the side part. A speaker mounting surface portion in which a speaker mounting portion is formed that has a front end continuous via a curved portion and is inclined with respect to the longitudinal direction of the vehicle body in a plan view, and a bent portion extending vertically at the rear end of the speaker mounting surface. And a rear mounting portion that is integrally formed through the portion and is coupled to the rear bracket mounting portion.

  According to this invention, the speaker mounting brackets installed between the front bracket mounting portion formed at the rear portion of the wheel house and the rear bracket mounting portion formed at the rear pillar are formed on both sides of the speaker mounting surface portion in the vertical direction. The extended bending part increases the rigidity and improves the surface rigidity of the speaker mounting surface part, so that the speaker is firmly attached and supported, and the speaker mounting bracket is not vibrated by the vibration generated from the speaker. Sound reproduction becomes possible.

  On the other hand, each bent portion becomes a bent portion with respect to the longitudinal direction of the vehicle body, and when an excessive impact load is input to the speaker mounting bracket from the rear of the vehicle body, the speaker mounting bracket is efficiently deformed by buckling at each bent portion. The crash stroke is crushed and the rear part of the vehicle body is crushed, and the impact load due to the crushing deformation of the vehicle body frame or the like can be secured without being affected by the speaker mounting bracket. Moreover, the crash stroke which crushes a speaker mounting bracket is ensured, it can avoid that a speaker contacts a wheel house shockingly and a deformation | transformation of a wheel house can be prevented.

  The invention of the rear part structure of the vehicle body according to claim 2 that achieves the above object is characterized in that a speaker mounting bracket is installed between the wheel house and the rear pillar along the inside of the rear quarter panel, and the speaker is mounted and supported on the speaker mounting bracket. In the rear structure of the vehicle body, a front bracket mounting portion formed in the rear portion of the wheel house and extending in the vertical direction, a rear bracket mounting portion formed in the rear pillar, the front bracket mounting portion and the rear bracket mounting portion. A speaker mounting bracket that is installed between the front bracket mounting portion and the front bracket mounting portion. The front mounting portion extends in the vertical direction and is coupled to the front bracket mounting portion. The front end continues through the first bent portion extending in the up-down direction to the rear end of the vehicle and gradually moves toward the rear of the vehicle body The front end is continuous via an inclined surface portion that is inclined with respect to the longitudinal direction of the vehicle body in a plan view so as to be biased toward the yaquarter panel, and a second bent portion that extends in the vertical direction at the rear end of the inclined surface portion. The front end continues through the side portion extending along the longitudinal direction of the vehicle body and the third bent portion extending in the vertical direction at the rear end of the side surface portion, and gradually moves toward the vehicle interior as the vehicle moves rearward. A speaker mounting surface portion formed with a speaker mounting portion that is inclined with respect to the longitudinal direction of the vehicle body in a plan view so as to be biased, and a fourth bent portion that extends in the vertical direction at the rear end of the speaker mounting surface. The rear mounting portion extending in the direction and coupled to the rear bracket mounting portion is integrally formed continuously.

  According to this invention, the first to fourth speaker mounting brackets extending in the vertical direction extend between the front bracket mounting portion formed at the rear portion of the wheel house and the rear bracket mounting portion formed at the rear pillar. The rigidity of the speaker mounting surface is increased by forming the bent portion and the third and fourth bent portions are formed on both sides of the speaker mounting surface portion on which the speaker mounting portion for supporting the speaker is formed. Will improve. As the rigidity of the speaker mounting bracket is increased, the speaker is firmly mounted and supported, and the speaker mounting bracket and the like are not vibrated by vibrations generated by the speaker, and good sound reproduction by the speaker is possible.

  On the other hand, the first to fourth bent portions become bent portions with respect to the longitudinal direction of the vehicle body, and when an excessive impact load is input from the rear of the vehicle body, the front bracket mounting portion formed at the rear portion of the wheel house The speaker mounting bracket that is firmly coupled and supported at the rear end portion of the speaker mounting portion is pushed forward, and gradually bends along the fourth and third bent portions, and further, the side portion is pushed forward. The first bent portion and the second bent portion are bent, the speaker mounting bracket is efficiently crushed, and a crash stroke that crushes the rear of the vehicle body is secured, so that the vehicle body frame or the like is crushed without being affected by the speaker mounting bracket. The absorption of impact load due to can be ensured. Further, the speaker mounting brackets are sequentially crushed forward to ensure a crash stroke, so that the speaker can be prevented from impactingly contacting the wheel house, and deformation of the wheel house can be prevented.

  According to a third aspect of the present invention, in the vehicle body rear structure according to the first or second aspect, a plurality of bolt holes are formed corresponding to the front bracket mounting portion and the front mounting portion, respectively, and the front bracket mounting portion And a mounting bracket having a base portion extending vertically from the rear quarter panel side and a plurality of bolts fixed to the base portion and insertable into the bolt holes, the bolts of the mounting bracket being attached to the front bracket. The front bracket mounting portion and the front mounting portion are fastened by a nut that penetrates into the bolt hole formed in the mounting portion and the front mounting portion, abuts the base portion to the front bracket mounting portion, and is screwed to the bolt. Features.

  According to the present invention, the base of the stacked mounting bracket, the front bracket mounting portion and the speaker mounting bracket are fastened together by the bolts and nuts to increase the rigidity of the front bracket mounting portion formed in the wheel house, and the front side The coupling rigidity of the bracket mounting portion and the front mounting portion is increased, and the front mounting portion of the speaker mounting bracket is firmly coupled to the front bracket mounting portion.

  Also, when mounting the front bracket mounting part to the front mounting part of the speaker mounting bracket, insert the mounting bracket into the gap between the front bracket mounting part and the rear quarter panel, and insert each bolt into the bolt hole of the front bracket mounting part. At the same time, the base is brought into contact with the front bracket mounting portion, the mounting bracket is set, and the bolt holes drilled in the front mounting portion are fitted to the bolts protruding from the bolt holes of the front bracket mounting portion. As a result, the speaker mounting bracket can be easily positioned with respect to the side bracket mounting portion, and the efficiency of mounting the speaker mounting bracket can be improved.

  According to a fourth aspect of the present invention, in the vehicle body rear structure according to any one of the first to third aspects, a fuel supply pipe communicating with a fuel tank is disposed in the wheel house. .

  According to the present invention, when an excessive impact load is input to the speaker mounting bracket from the rear side of the vehicle body, it is possible to avoid the speaker from abutting against the wheel house, and the deformation of the wheel house is suppressed. Thus, damage to the fuel supply pipe disposed in the wheel house can be prevented.

  According to a fifth aspect of the present invention, in the vehicle body rear structure according to any one of the first to fourth aspects, the speaker is a woofer speaker.

  The present invention is particularly effective when the speaker is a specific woofer speaker and has a relatively large rigidity and generates a relatively large vibration when reproducing a bass sound. The effect is remarkable.

  According to the present invention, the speaker mounting bracket formed between the front bracket mounting portion formed at the rear portion of the wheel house and the rear bracket mounting portion formed at the rear pillar extends in the vertical direction formed at the speaker mounting bracket. The rigidity is increased by the existing bent portion, and the support rigidity of the speaker is improved. In addition, the speaker mounting bracket is not vibrated by the vibration generated from the speaker, and good sound reproduction by the speaker is possible.

  On the other hand, when an excessive impact load is input to the speaker mounting bracket from the rear of the vehicle body, a crash stroke is secured in which the speaker mounting bracket is efficiently crushed and the vehicle body rear portion is crushed by buckling deformation at each bent portion, Absorption of impact load due to crushing deformation of the vehicle body frame or the like can be secured without being affected by the speaker mounting bracket. Further, it is possible to prevent the speaker from directly contacting the wheel house in an impact manner and to prevent the wheel house from being deformed.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. In each figure, the arrow F indicates the vehicle body front direction, the arrow OUT indicates the vehicle body width direction outward direction, and the arrow UP indicates the vehicle body upward direction.

  FIG. 1 is a side view of a wagon type automobile 1, FIG. 2 is a cross-sectional view taken along the line II in FIG. 1, FIG. 3 is an enlarged view of a portion A in FIG. 5 is an exploded perspective view of the main part. 4, the rear quarter panel 2 is indicated by a one-dot chain line, the wheel apron 9 is indicated by a two-dot chain line, and the rear quarter inner panel 11 is indicated by a three-dot chain line.

  The rear portion of the automobile 1 has a rear quarter panel 2 that forms the outer surface of the vehicle body. A wheel arch 2a that accommodates the rear wheel W is cut out in an arc shape at the lower part of the rear quarter panel 2, and the rear quarter panel is formed at the upper part. An opening 2b for glass is formed. 2 and 3, the rear end of the rear quarter panel 2 has a rear surface portion 3 that is bent inwardly of the vehicle body and extends in the vertical direction. The rear surface portion 3, the front surface portion 4a, and the side surface portion 4b. A hollow rear pillar 5 extending in the vertical direction is formed by an L-shaped rear pillar inner panel 4 having a cross section. Also, a rear bracket mounting portion 4c is formed on the side surface portion 4b of the rear pillar inner panel 4, and a welding nut 4d is disposed on the rear bracket mounting portion 4c.

  The rear pillar 5 forms a side edge of the rear opening 6 for the rear gate, and the lower end of the rear pillar 5 is connected to the end of a rear skirt (not shown) extending in the vehicle width direction along the lower edge of the rear opening 6. The upper end is connected to the end of the rear rail extending in the vehicle width direction along the upper edge of the rear opening 6.

  A wheel house 7 for accommodating the rear wheel W is formed along the wheel arch 2a inside the vehicle interior R of the rear quarter panel 2. The wheel house 7 is formed by a rear arch inner 8 disposed along the wheel arch 2 a of the rear quarter panel 2 and a wheel apron 9 coupled to the rear arch inner 8. The wheel apron 9 has a substantially halved dome shape that bulges into the passenger compartment R, and the rear arch inner 8 and the wheel apron 9 overlap at the rear to form a flat plate shape facing the rear quarter panel 2 in the vertical direction. An extending flange-shaped front bracket mounting portion 10 is formed. A plurality of bolt holes 10 a are formed in the front bracket mounting portion 10. The upper part of the wheel apron 9 is coupled to the lower edge of the rear quarter panel inner 11 extending in the front-rear direction so as to face the rear quarter panel 2.

  A floor panel (not shown) is installed at the lower ends of the left and right wheel aprons 9 and the rear quarter panel 2, and the rear edge of the floor panel is coupled to the rear skirt. In addition, vehicle body frames serving as vehicle body skeleton members extending along the vehicle body front-rear direction and having a rear end coupled to the rear skirt are provided on the left and right sides of the floor panel.

  In the wheel house 7 formed by the rear arch inner 8 and the wheel apron 9, there is a fuel supply pipe 12 for connecting a fuel inlet provided in the rear quarter panel 2 and a fuel tank provided on the lower surface of the floor panel. Arranged along the wheel apron 9.

  Between the front bracket mounting portion 10 formed at the rear portion of the wheel house 7 and the rear pillar 5, when an impact load such as a rear collision is input to the rear portion of the vehicle body, efficient shock load absorption by crushing deformation of the vehicle body frame or the like is performed. An opening for securing a crash zone for ensuring the above is formed.

  On the other hand, a plate-like speaker mounting bracket 20 for mounting a relatively heavy heavy woofer speaker 31 between the front bracket mounting portion 10 formed at the rear portion of the wheel house 7 and the rear pillar inner panel 4 of the rear pillar 5 is provided at the rear. It is constructed along the inside of the quarter panel 2.

  The speaker mounting bracket 20 has a flat front mounting portion 21 extending in a vertical direction that can be superposed on the front bracket mounting portion 10 formed at the rear portion of the wheel house 7 from the inside of the passenger compartment R. The front end is continuous through a first bent portion 22 that extends in the vertical direction at the rear end of the front mounting portion 21 and bends toward the rear quarter panel 2 and gradually moves rearward in the plan view. A flat inclined surface portion 23 that inclines with respect to the longitudinal direction of the vehicle body so as to approach the quarter panel 2, and a second bent portion 24 that extends in the vertical direction at the rear end of the inclined surface portion 23 and bends rearward of the vehicle body. A flat side surface portion 25 extending in the front-rear direction of the vehicle body along the rear quarter panel 2 and extending in the vertical direction at the rear end of the side surface portion 25 and extending inward of the vehicle compartment R. A flat speaker mounting surface portion 27 that inclines with respect to the longitudinal direction of the vehicle body so that the front end continues through the bent third bent portion 26 and gradually shifts toward the vehicle interior side as the vehicle moves rearward. Above the rear edge of the face 27 The rear end surface portion 20 extends in the direction and bends rearward of the vehicle body, the front end is continuous, and the rear end surface portion 29 extends along the vehicle body longitudinal direction. At the rear end, a rear mounting portion 30 is formed which overlaps with the rear bracket mounting portion 4c formed on the rear pillar 5.

  A bolt hole 21a is drilled in the front mounting portion 21 corresponding to the bolt hole 10a drilled in the front bracket mounting portion 10 of the wheel house 7, and a reinforcing flange 21b is bent along the front edge. It is formed. A speaker mounting portion 27a having an opening is formed at the center of the speaker mounting surface portion 27, and the woofer speaker 31 is attached to the speaker mounting portion 27a so as to cover the opening. Further, a bolt hole 30a is formed in the rear mounting portion 30 corresponding to the welding nut 4d disposed in the bracket mounting portion 4c of the rear pillar 5.

  Furthermore, a mounting bracket 40 for mounting the front mounting portion 21 of the speaker mounting bracket 20 to the front bracket mounting portion 10 is provided. As shown in FIG. 5, the mounting bracket 40 has a flat base 41 extending vertically from the rear quarter panel 2 side in the front bracket mounting portion 10, and the front bracket mounting portion 10 on the base 41. A plurality of bolts fixedly provided corresponding to the respective bolt holes 10a formed in the first and second welding bolts 42 in the present embodiment are provided.

  When mounting the speaker mounting bracket 20 formed in this way, the mounting bracket 40 is inserted into the gap between the front bracket mounting portion 10 and the rear quarter panel 2 formed in the rear portion of the wheel house 7 in advance. The bolts 42 are inserted into the bolt holes 10a formed in the front bracket mounting portion 10 from the rear quarter panel 2 side, and the base 41 is brought into contact with the front bracket mounting portion 10 to set the mounting bracket 40.

  With the mounting bracket 40 set in the front bracket mounting portion 10, the front mounting portion of the speaker mounting bracket 20 is connected to each welding bolt 42 protruding from the bolt hole 10a of the front bracket mounting portion 10 to the vehicle interior R side. The speaker bracket 20 is positioned with respect to the front bracket mounting portion 10 by fitting the bolt hole 10a formed in the hole 21. Further, a nut 45 is screwed into each welding bolt 42 protruding from each bolt hole 10 a of the speaker mounting bracket 20, and the front mounting portion 21 of the speaker mounting bracket 20 is fastened to the front bracket mounting portion 10 together with the mounting bracket portion 40. .

  When attaching the front bracket mounting portion 10 to the front mounting portion 21 of the speaker mounting bracket 20, the working space can be reduced by using each welding bolt 42 protruding from each bolt hole 10a of the front bracket mounting portion 10 as a positioning guide. The front mounting portion 21 of the relatively large speaker mounting bracket 20 can be easily positioned in the rear portion of the limited vehicle compartment R, and the nut 45 is screwed into each welding bolt 42 that is positioned and fixed. The efficiency of the mounting operation for fastening the front mounting portion 21 of the speaker mounting bracket 20 to the front bracket mounting portion 10 is obtained.

  In addition, the base 41 of the stacked mounting bracket 40, the front bracket mounting portion 10 and the speaker mounting bracket 20 formed at the rear of the wheel house 7 are fastened together by the welding bolts 42 and the nuts 45, and the wheel house 7 The rigidity of the front bracket mounting portion 10 formed at the rear portion is increased. Further, the coupling rigidity of the front bracket mounting portion 10 and the front mounting portion 21 of the speaker mounting bracket 20 is increased, so that the front mounting portion 21 of the speaker mounting bracket 20 is firmly coupled to the front bracket mounting portion 10.

  On the other hand, the rear mounting portion 30 formed at the rear end of the speaker mounting bracket 20 is overlapped with the bracket mounting portion 4c formed in the rear pillar 5, and the bolt 46 is inserted into the bolt hole 30a formed in the rear mounting portion 30. Then, the rear end attaching portion 30 is fastened to the rear pillar 5 by screwing into the welding nut 4d of the bracket attaching portion 4c. Thus, the woofer speaker 31 is mounted without protruding into the passenger compartment R by the speaker mounting bracket 20 installed along the rear quarter panel 2 between the wheel house 7 and the rear pillar 5.

  Thus, the speaker mounting bracket 20 installed between the front bracket mounting portion 10 and the rear pillar 5 formed at the rear portion of the wheel house 7 is the front bracket formed at the rear portion of the wheel house 7 with which rigidity is ensured. The front end mounting portion 21 is firmly fastened to the mounting portion 10, and the rigidity of the speaker mounting bracket 20 itself is increased by forming the first to fourth bent portions 22, 24, 26, and 28 extending in the vertical direction. . Further, a pair of third bent portion 26 and fourth bent portion 28 are formed adjacent to both sides of the speaker mounting surface 27 on which the speaker mounting portion 27a for supporting the woofer speaker 31 is formed. Combined with the large rigidity, the surface rigidity of the speaker mounting surface 27 is improved.

  As the support rigidity of the speaker mounting bracket 20 and the rigidity of the speaker mounting bracket 20 itself increase, the woofer speaker 31 is firmly attached and supported, and the speaker mounting bracket is caused by vibrations generated when reproducing the bass sound from the woofer speaker 31. Generation of noise due to vibration of the speaker mounting bracket 20 or the like can be suppressed without exciting 20 or the like, and good sound reproduction by the woofer speaker 31 can be achieved.

  On the other hand, the speaker mounting bracket 20 has a first bent portion 22 which is a bent portion between the front mounting portion 21 and the inclined surface portion 23 with respect to the longitudinal direction of the vehicle body, and similarly, the second bent portion 24 and the third bent portion. 26, the fourth bent portion 28 are the bent portions of the inclined surface portion 23 and the side surface portion 25, the side surface portion 25 and the speaker mounting surface portion 27, and the speaker mounting surface portion 27 and the rear end surface 29 with respect to the longitudinal direction of the vehicle body. 4 in each of the bent portions 22, 24, 26, 28, the rigidity with respect to the load in the front-rear direction changes discontinuously, and when an excessive impact load P is input to the rear end of the speaker mounting bracket 20 from the rear of the vehicle body, Each of the first to fourth bent portions 22, 24, 26, 28 is buckled and deformed.

  Next, an impact absorbing action at the rear part of the vehicle body when an impact load is applied to the vehicle body from the rear in a rear collision such as a rear-end collision will be described with reference to an operation explanatory diagram schematically shown in FIG.

  FIG. 6A shows the normal state of the rear part of the vehicle body. In this normal state, when an excessive impact load P is input to the rear part of the vehicle body from the rear, for example, due to a rear collision such as a rear-end collision by a vehicle traveling from the rear, the rear part of the vehicle body is crushed and the vehicle body is Crushing deformation from the rear end of the vehicle body frame extending along the shock absorber absorbs the impact load.

  The lower part of the rear pillar 5 is pushed forward along with the crushing deformation of the rear part of the vehicle body due to the input of the impact load P, and the impact load P is input to the rear end of the speaker mounting bracket 20 from the rear. With the input of the impact load P, the speaker mounting bracket 20 in which the front mounting portion 21 is firmly coupled and supported by the front bracket mounting portion 10 formed at the rear portion of the wheel house 7 has the rear end surface portion 30 forward. It bends along the fourth bent portion 28 and the third bent portion 26 where the longitudinal rigidity becomes discontinuous, and the third bent portion 26 is swung as shown by a broken line 27c in FIG. The speaker mounting surface 27 swings forward as a moving center, and the woofer speaker 31 also moves as indicated by a broken line 31c.

  Furthermore, when the speaker mounting surface portion 27 of the speaker mounting bracket 20 is pushed forward by the movement of the rear pillar 5 or the like due to the impact load P, the third bent portion 28 is further folded as shown by a broken line 27c in FIG. The speaker mounting surface portion 27 is bent and swings forward with the third bent portion 26 as the swing center, and the side surface portion 25 is pushed forward, and the first bent portion 22 and the second folded portion are discontinuous in rigidity. The bent portion 23 bends, and the inclined surface portion 23 swings forward with the first bent portion 26 as the swing center as indicated by a broken line 23c in FIG. 6C. As a result, the side surface portion 25, the speaker mounting surface portion 27, the woofer speaker 31 and the like move forward as indicated by broken lines 25c, 27c, 31c, and a crash stroke in which the rear portion of the vehicle body is crushed is ensured.

  The speaker mounting bracket 20 is efficiently crushed by the buckling deformation of the first to fourth bent portions 22, 24, 26, and 28 of the speaker mounting bracket 20 without being affected by the speaker mounting bracket 20, Absorption of impact load due to crushing deformation of the body frame or the like can be ensured.

  Further, when the impact load P is input from the rear, the speaker mounting surface 27 swings the third bent portion 26 by bending along the third bent portion 26 and the second bent portion 24 of the speaker bracket 20. As a center, the speaker mounting surface 27 swings forward, and is bent along the first bent portion 22 and the second bent portion 24 step by step, thereby securing a crash stroke in which the speaker mounting bracket 20 is crushed forward. By doing so, it can be avoided that the woofer speaker 31 directly abuts against the wheel apron 9 and the arch inner 8 constituting the wheel house 7, the deformation of the wheel house 7 can be prevented, and the deformation of the wheel house 7 is accompanied. Occurrence of a situation such as fuel leakage due to the fuel supply pipe 12 can be prevented.

  In addition, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the meaning of invention.

  For example, the mounting bracket 40 may be omitted, and the front bracket mounting portion 10 and the front mounting portion 21 of the speaker mounting bracket 20 may be bolted together. In addition, a rigidity member, a bead, or the like can be attached to the side surface portion 25 or the speaker mounting surface portion 27 of the speaker mounting bracket 20 to improve the rigidity of the side surface portion 25 or the speaker mounting surface portion 27.

It is a side view of the motor vehicle explaining the vehicle body rear part structure in this Embodiment. It is the II sectional view taken on the line of FIG. FIG. 3 is an enlarged view of a portion A in FIG. 2. FIG. 3 is a view taken in the direction of arrow B in FIG. 2. It is an exploded perspective view showing an important section same as the above. FIG. 11 is an operation explanatory diagram that schematically shows an impact absorption effect when an impact load is applied from the rear of the vehicle body.

Explanation of symbols

1 Car 2 Rear Quarter Panel 2a Wheel Arch 4 Rear Pillar Inner Panel 4c Rear Bracket Mounting 4d Welding Nut
5 Rear pillar 7 Wheel house 8 Rear arch inner 9 Wheel apron 10 Front bracket mounting portion 10a Bolt hole 12 Fuel supply pipe 20 Speaker mounting bracket 21 Front mounting portion 21a Bolt hole 22 First bent portion 23 Inclined surface portion 24 Second bent portion Part 25 side part 26 third bent part 27 speaker mounting surface part 28 fourth bent part 29 rear end surface part 30 rear part mounting part 31 woofer speaker 40 mounting bracket 41 base part 42 welding bolt (bolt)

Claims (5)

In the vehicle body rear structure in which a speaker mounting bracket is installed between the wheel house and the rear pillar along the inner side of the rear quarter panel, and the speaker is mounted and supported on the speaker mounting bracket.
A front bracket mounting portion formed at the rear portion of the wheel house and extending in the vertical direction;
A rear bracket mounting portion formed on the rear pillar;
A speaker mounting bracket that is installed between the front bracket mounting portion and the rear bracket mounting portion and supports the speaker;
The speaker mounting bracket
A front mounting portion extending in the vertical direction coupled to the front bracket mounting portion;
A side surface portion that is continuously formed at the rear end of the front mounting portion and extends along the longitudinal direction of the vehicle body;
A speaker mounting surface portion in which a front end is connected to a rear end of the side surface portion via a bent portion extending in the vertical direction and a speaker mounting portion is formed which is inclined with respect to the vehicle body front-rear direction in a plan view state;
A vehicle body rear structure comprising a rear attachment portion integrally formed at a rear end of the speaker attachment surface via a bent portion extending in a vertical direction and coupled to the rear bracket attachment portion. In the vehicle body rear structure in which a speaker mounting bracket is installed between the wheel house and the rear pillar along the inner side of the rear quarter panel, and the speaker is mounted and supported on the speaker mounting bracket.
A front bracket mounting portion formed at the rear portion of the wheel house and extending in the vertical direction;
A rear bracket mounting portion formed on the rear pillar;
A speaker mounting bracket that is installed between the front bracket mounting portion and the rear bracket mounting portion and supports the speaker;
The speaker mounting bracket is
A front mounting portion extending in the vertical direction coupled to the front bracket mounting portion;
The front end is connected to the rear end of the front part through a first bent part extending in the vertical direction, and is gradually biased toward the rear quarter panel as it moves to the rear of the body. An inclined surface portion inclined with respect to the direction;
A side portion extending in the longitudinal direction of the vehicle body and having a front end continuous via a second bent portion extending in the vertical direction at the rear end of the inclined surface portion;
The front end continues to the rear end of the side surface portion through a third bent portion that extends in the vertical direction, and gradually shifts toward the vehicle interior as the vehicle moves to the rear of the vehicle body. A speaker mounting surface portion on which a speaker mounting portion that is inclined is formed;
A rear mounting portion that extends in the vertical direction via a fourth bent portion that extends in the vertical direction at the rear end of the speaker mounting surface and is joined to the rear bracket mounting portion is integrally formed. Car body rear structure. A plurality of bolt holes are drilled corresponding to the front bracket mounting portion and the front mounting portion, respectively.
A mounting bracket having a base portion extending vertically from the rear quarter panel side on the front bracket mounting portion and a plurality of bolts fixed to the base portion and insertable into the bolt holes;
The bolts of the mounting bracket are inserted into the bolt holes formed in the front bracket mounting portion and the front mounting portion, the base is abutted on the front bracket mounting portion, and the front bracket mounting portion and the bolt are screwed into the bolt. The vehicle body rear part structure according to claim 1, wherein a front part attaching part is fastened.   The vehicle body rear part structure according to any one of claims 1 to 3, wherein a fuel supply pipe communicating with a fuel tank is disposed in the wheel house.   The vehicle body rear part structure according to any one of claims 1 to 4, wherein the speaker is a woofer speaker.

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