JP2009154570A - Vehicle rear-bumper structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle rear-bumper structure avoiding increase in repair costs and attaining improvement in design properties and functionality by prevent the vehicle-body rear-end part above a bumper reinforcement from being damaged in a case of a light rear-end collision of a vehicle as well as preventing a bumper face (a body part) from being damaged to eliminate replacement of the whole bumper face. <P>SOLUTION: The vehicle rear-bumper structure has a back door 9 protruding rearward beyond the front end of a rear-bumper reinforcement 20. A bumper opening part 26 is formed at the part including at least a part of a rear-bumper face 25 that faces the rear-bumper reinforcement 20 from the rear side. An exterior member 30 provided separately from the rear-bumper face 25 is mounted to the bumper opening part 26 in a manner that exposes the rear part. The exterior member 30 includes a body part 31, facing the bumper reinforcement, that has a prescribed front/rear length so as to protrude further rearward than the back door 9 while facing the bumper reinforcement 20 from the rear side. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a rear bumper structure of a vehicle, and more particularly, an exterior member having a bumper rain facing main body portion having a predetermined longitudinal length facing a rear bumper reinforcement from the rear side is provided separately from the bumper face.

  In recent years, in a rear bumper structure of a vehicle such as a general automobile, a rear bumper reinforcement (hereinafter referred to as a rear bumper rain) is installed to extend in the vehicle width direction on the rear end side of a pair of left and right rear side frames of a vehicle body, A rear bumper face is supported by the vehicle body so as to cover the rear bumper rain.

  As a rear bumper structure of this type of vehicle, a rear bumper rain having a closed cross section or a U-shaped open cross section, or a rear bumper rain connected to a pair of rear side frames via a pair of left and right crash cans. There are known ones in which cushioning members such as urethane foam and a plurality of cushioning ribs integrally formed on the rear bumper face are disposed between the rear bumper rain and the rear bumper face.

  Here, the rear bumper structure of the vehicle of Patent Document 1 is connected to a main bumper, a plurality of reinforcing bumpers extending downward from both ends in the vehicle width direction of the main bumper and an intermediate portion in the vehicle width direction, and lower ends of the plurality of reinforcing bumpers. With a reverse lift bumper, the bumper area is widened up and down, and the main bumper and the reinforcing bumpers at both ends in the vehicle width direction are formed in an annular body, and the annular body and the reinforcing bumper at the intermediate portion in the vehicle width direction An opening for ventilation is formed between them.

JP 55-117369 A

  In a general rear bumper structure of a vehicle, when the vehicle has a light rear impact (here, the light rear impact is a rear impact that does not damage the rear bumper rain), for example, when the vehicle is moving backward, it may hit an obstacle such as a pole. Even if the obstacle hits the bumper face before the rear end of the vehicle body (for example, the back door) above the bumper rain, such as when it is bumped back by an obstacle such as another vehicle, the bumper face Is pushed by the obstacle and deformed and displaced forward, the rear end of the vehicle body hits the obstacle and is damaged, and the repair cost may become very expensive.

  In the rear bumper structure of a vehicle, in particular, in the case where the rear end portion of the vehicle body is configured to protrude rearward from the rear bumper rain, the bumper rain may be provided even if the bumper face protrudes rearward from the rear end portion of the vehicle body. If there is no cushioning member such as urethane foam or a plurality of cushioning ribs integrally formed on the rear bumper face between the bumper face and the bumper face, the bumper face will be pushed forward by the obstacle during a light rear impact It is easy to be deformed and displaced, that is, the rear end portion of the vehicle body hits an obstacle and is likely to be damaged.

  Therefore, in the rear bumper structure of the vehicle, when a plurality of buffer ribs integrally formed on the rear bumper face are arranged between the rear bumper rain and the rear bumper face, the rear end portion of the vehicle body hits an obstacle during a light rear collision of the vehicle. Although damage can be suppressed, if the buffer rib is damaged, it is necessary to replace the entire expensive rear bumper face integrally formed with a plurality of buffer ribs, and the repair cost becomes high after all.

  In addition, cushioning members such as urethane foam disposed between the rear bumper rain and the rear bumper face and a plurality of cushioning ribs integrally formed on the rear bumper face are not shown to the outside, and correspond to the rear impact of the vehicle. It does not have a function other than the function, and is poor in design and functionality in that respect.

  The rear bumper structure of the vehicle disclosed in Patent Document 1 includes a main bumper, a reinforcement bumper, and a reverse lift bumper, and the bumper area is widened vertically. However, when the vehicle has a light rear impact, the main bumper, the reinforcement bumper, Since impact loads are directly input to the lift bumpers, these bumpers can be damaged, causing the worst overall damage and making repair costs very expensive.

  The object of the present invention is to prevent damage to the rear end of the vehicle body above the bumper reinforcement during a light rear collision, and to prevent damage to the bumper face (main body portion). An object of the present invention is to provide a vehicle rear bumper structure that eliminates the need for overall replacement, prevents an increase in repair costs, and improves design and functionality.

  The rear bumper structure of the vehicle according to claim 1 is a rear bumper reinforcement constructed to extend in the vehicle width direction on the rear end side of the pair of left and right rear side frames of the vehicle body, and the vehicle body so as to cover the rear bumper reinforcement. In the rear bumper structure of the vehicle having a supported rear bumper face, the rear end of the vehicle body above the rear bumper reinforcement is configured to protrude rearward from the front end of the rear bumper reinforcement. A bumper opening formed in a part including at least a part facing the rear bumper reinforcement from the rear side, and a rear bumper reinforcement provided separately from the rear bumper face and mounted rearwardly in the bumper opening. The rear end of the vehicle body Characterized by comprising an exterior member having a bumper reinforcement opposing body having a predetermined longitudinal length so as to protrude rearward from.

  The rear end of the vehicle body (for example, the back door) above the rear bumper reinforcement is configured to protrude rearward from the front end of the rear bumper reinforcement, and is opposed to the rear bumper reinforcement of the rear bumper face from the rear side. A bumper opening is formed at a portion including at least a part of the bumper. An exterior member provided separately from the rear bumper face is attached to the bumper opening so as to be exposed rearward, and a bumper rain facing main body portion having a predetermined longitudinal length of the exterior member is opposed to the rear bumper reinforcement from the rear side, and It projects rearward from the rear end of the vehicle body.

  By the exterior member, for example, a sporty exterior surface is formed to improve design, and the bumper rain facing main body portion is opposed to the rear bumper reinforcement from the rear side and from the rear end portion of the vehicle body. By projecting backward, obstacles such as poles and other vehicles are likely to hit the bumper rain opposing main body before the rear end of the vehicle body at the time of rear collision of the vehicle. And, in the case of a light rear impact of the vehicle (rear impact that does not damage the rear bumper reinforcement), if the obstacle hits the bumper rain opposing body before the rear end of the vehicle body, By setting the predetermined longitudinal length so that it protrudes rearward from the rear end of the vehicle body in contact with the rear bumper reinforcement, a reaction force is applied to the rear bumper reinforcement, causing an obstacle. The rear end of the vehicle body is prevented from being damaged by receiving an object so that the obstacle does not hit the rear end of the vehicle body, and the bumper rain opposing main body portion is damaged by receiving the obstacle. Even in this case, it is possible to prevent the bumper face (main body portion) from being damaged, eliminate the need to replace the entire bumper face, and replace only the exterior member.

  The rear bumper structure of the vehicle according to claim 2 is configured such that a rear end portion of the vehicle body protrudes rearward from the rear bumper reinforcement in the vehicle width direction, and the bumper rain opposing main body portion is formed of an exterior member. It is provided in at least a part in the vehicle width direction corresponding to the vehicle width direction part of the rear end portion of the vehicle body.

  The rear bumper structure for a vehicle according to claim 3 is characterized in that the exterior member has a ventilation portion that faces the rear bumper reinforcement with a gap from the rear side, and rectifies by flowing the running wind flowing on the lower surface side of the vehicle body when the vehicle is running. It is characterized by having.

  The rear bumper structure of a vehicle according to claim 4, wherein the exterior member has a license plate mounting portion recessed in a rear opening shape, and the bumper rain facing main body portion has an upper edge wall portion of the license plate mounting portion. It is characterized by.

  The rear bumper structure for a vehicle according to claim 5 includes an exterior member mounting portion for mounting the exterior member on one of the rear reinforcement and the rear bumper face so that the exterior member can be allowed to displace toward the reinforcement. It is characterized by that.

  According to the rear bumper structure of the vehicle of claim 1, the rear end portion of the vehicle body above the rear bumper reinforcement is configured to protrude rearward from the front end of the rear bumper reinforcement, and the rear bumper reinforcement of the rear bumper face is configured. A bumper opening is formed in a portion including at least a portion facing from the rear side, and an exterior member provided separately from the rear bumper face is attached to the bumper opening so as to be exposed rearward. For example, a sporty exterior surface can be formed to improve design, and the exterior member faces the rear bumper reinforcement from the rear side and protrudes rearward from the rear end portion of the vehicle body. Since it has a bumper rain facing main body part with a predetermined longitudinal length on the rear side of the vehicle, a pole or other Both obstacles are likely to hit the bumper rain facing main body before the rear end of the vehicle body, and when the vehicle has a light rear collision (a rear bump that does not damage the rear bumper reinforcement), When the bumper rain opposing main body part hits the bumper rain opposing main body part before the rear end part of the vehicle body, the bumper rain opposing main body part protrudes rearward from the rear end part of the vehicle body in a state of contacting the rear bumper reinforcement. By setting the predetermined longitudinal length, a reaction force is applied to the rear bumper reinforcement so that the obstacle is received and the obstacle does not hit the rear end of the vehicle body. Can be prevented, and even if the bumper rain facing main body is damaged by receiving an obstacle, the bumper face (main body portion) can be prevented from being damaged. And the need for replacement of the entire Esu, since it corresponds to replacing only the outer member, it is possible to prevent the repair cost becomes expensive.

  According to the rear bumper structure of the vehicle according to claim 2, a part of the rear end portion of the vehicle body in the vehicle width direction is configured to protrude rearward from the rear bumper reinforcement, and the bumper rain opposing main body portion includes at least one of the exterior members. Since the vehicle body is provided at a portion in the vehicle width direction corresponding to the vehicle width direction portion of the rear end portion of the vehicle body, the vehicle width direction portion of the vehicle body rear end portion is prevented from being damaged at the time of a light rear collision. be able to.

  According to the rear bumper structure of the vehicle of the third aspect, since the exterior member faces the rear bumper reinforcement with a gap from the rear side, the exterior member is attached to the rear bumper rain during a very slight light rear impact of the vehicle. It is displaced toward the force to prevent the exterior member from being damaged by receiving the obstacle. Here, the exterior member is displaced toward the rear bumper reinforcement together with the rear bumper face, so that the shock absorbing action is obtained. And therefore, the impact on an obstacle (for example, a pedestrian) can be mitigated, and after this light rear impact, the exterior member is restored to eliminate the need for replacement, i.e., no repair costs are required. Since it has a ventilation part that rectifies the air by running the wind that flows on the underside of the car body when the vehicle is running, it reduces the running resistance of the vehicle and improves fuel efficiency, and reduces the entrainment wind And can expect to or reduce the adhesion of dirt to the vehicle body rear portion, that is, it is possible to enhance the functionality of the package member.

  According to the rear bumper structure of the vehicle of the fourth aspect, the exterior member has the license plate mounting portion that is recessed rearwardly open, and the bumper rain opposing main body portion has the upper edge wall portion of the license plate mounting portion. The upper edge wall portion of the license plate mounting portion can be effectively used as the bumper rain opposing main body portion.

  According to the rear bumper structure of the vehicle of claim 5, the exterior member attachment portion for attaching the exterior member to one of the rear bumper reinforcement and the rear bumper face is provided so as to allow the exterior member to be displaced toward the rear bumper reinforcement. Therefore, when the exterior member is facing the rear bumper reinforcement with a gap from the rear side, the exterior member is attached to the rear bumper reinforcement without damaging the rear bumper reinforcement or the rear bumper face at the time of a slight rear collision of the vehicle. It can be surely displaced toward the force.

  In the rear bumper structure of the vehicle according to the present invention, the rear end of the vehicle body above the rear bumper reinforcement is configured to protrude rearward from the front end of the rear bumper reinforcement, and the rear bumper reinforcement of the rear bumper face is rearward of the rear bumper reinforcement. A bumper opening is formed in a part including at least a part facing from the rear, and an exterior member provided separately from the rear bumper face is attached to the bumper opening so as to be exposed rearward, and the exterior member is attached to the rear bumper reinforcement. A bumper rain opposing main body portion having a predetermined longitudinal length is provided so as to face from the side and protrude rearward from the rear end portion of the vehicle body.

  1 is a rear view including the rear bumper structure of the vehicle according to the first embodiment, FIG. 2 is a plan view including the rear bumper structure of the vehicle according to the first embodiment, and FIG. 3 is a perspective view of the rear bumper reinforcement and the like according to the first embodiment. FIG. 4 is a sectional view taken along line IV-IV in FIG. 1. As shown in FIGS. 1-4, the rear part of the vehicle body 2 of the vehicle 1 (automobile 1) includes a pair of left and right rear side frames 3, a pair of left and right rear aprons 4, a rear header 5, a pair of left and right rear pillars 6, A rear cross member 7, a rear end panel 8, a back door 9 and the like are provided, and a rear bumper reinforcement 20 (hereinafter referred to as a rear bumper rain 20) of the rear bumper structure 15 of the vehicle 1 is disposed on the rear side of the rear end panel 8. .

  A rear gate 10 is formed in a portion surrounded by the rear header 5, a pair of rear pillars 6, a rear cross member 7, and the like, and a back door 9 is hinged to the rear header 5 so that the rear gate 10 can be opened and closed. The back door 9 includes an inner panel 9a, an outer panel 9b, a rear window glass 9c, and the like, and a license plate 11 is attached to a recess 9d formed in the outer panel 9b so as to be opened rearward.

  The rear bumper structure 15 of the vehicle 1 is formed on the vehicle body 2 so as to cover the rear bumper rain 20 made of metal and a metal rear bumper rain 20 extending in the vehicle width direction on the rear end side of the pair of rear side frames 3 of the vehicle body 2. A supported synthetic resin rear bumper face 25 and a synthetic resin exterior member 30 provided separately from the rear bumper rain 20 and the rear bumper face 25 are provided.

  The rear bumper rain 20 is formed so that most of the rear bumper rain 20 extends straight in the vehicle width direction and the left and right end portions are curved slightly forward. The back door 9, which is the rear end of the vehicle body 2 above the rear bumper rain 20, The rear door 20 protrudes rearward from the front end, and the back door 9 is configured such that the center portion in the vehicle width direction protrudes rearward from the rear bumper rain 20. The rearward protrusion amount of the back door 9 with respect to the rear bumper rain 20 at the center portion in the vehicle width direction is L1 shown in FIG.

  The rear bumper rain 20 forms a U-shaped open cross section that opens forward, and its left and right ends are connected to a pair of rear side frames 3 via a pair of left and right crash cans 21. The rear side frames 3 and the crash can 21 are connected to each other through flanges of the rear end panel 8. Instead of the rear bumper rain 20, a rear bumper rain 20 </ b> C that forms a closed section of a fourth embodiment described later as shown in FIG. 10 may be adopted.

  The rear bumper face 25 is provided so as to be substantially continuous from the pair of rear aprons 4, and has an upper horizontal face portion 25 a extending rearward from the vicinity of the rear cross member 7 and a rear end of the upper horizontal face portion 25 a at the rear end portion. And a lower face horizontal face part 25c extending forward from the lower end of the vertical face part 25b. The vertical face portion 25 b covers the rear side of the rear bumper rain 20, and in this case, the vertical face portion 25 b is disposed so as to protrude rearward from the back door 9 with a gap from the rear bumper rain 20 to the rear.

  A bumper opening 26 is formed in at least a part of the vertical face portion 25 b that faces the rear bumper rain 20 from the rear side of the rear bumper face 25. Specifically, the bumper opening 26 is located on the rear side of the rear bumper rain 20, has a slightly shorter vehicle width direction length than the rear bumper rain 20, and has a shape that has substantially the same vertical width as the rear bumper rain 20. Has been.

  The exterior member 30 is formed of a honeycomb-shaped grill member having a large number of front and rear through holes 30a, passes through the bumper opening 26 of the rear bumper face 25, and its rear end is a vertical face portion of the rear bumper face 25. The bumper opening 26 is mounted on the bumper opening 26 so as to be exposed rearward so as to be positioned on substantially the same plane as 25b.

  The exterior member 30 faces the rear bumper rain 20 with a gap from the rear side at least in the vehicle width direction central portion (the whole in the present embodiment) corresponding to the vehicle width direction central portion of the back door 9 of the exterior member 30. And a bumper rain facing main body portion 31 having a predetermined longitudinal length so as to protrude rearward from the back door 9. A large number of ventilation holes 30 a of the exterior member 30 correspond to ventilation sections that rectify by running the running wind A shown by phantom lines in FIG. 4 that flows on the lower surface side of the vehicle body 2 when the vehicle 1 is running.

  The rear protrusion amount of the bumper rain facing main body portion 31 with respect to the back door 9 is L2 shown in FIG. 4, and the gap between the rear bumper rain 20 and the bumper rain facing main body portion 31 is L3 shown in FIG. The predetermined longitudinal length of the main body 31 is L shown in FIG. L1, L2, L3, and L are set so that L−L3> L1.

  As an exterior member attachment portion for attaching the exterior member 30 to the rear bumper face 25, a portion facing the bumper opening 26 of the rear bumper face 25 is provided in front of the rear bumper rain 20 so that the exterior member 30 can be allowed to be displaced (forward). A plurality of upper support pieces 26a and lower support pieces 26b projecting to the front are formed, and claw portions 27a and 27b are formed at the front ends of the support pieces 26a and 26b. The claw portions 27a and 27b are formed on the exterior member 30. Engaged with the outer peripheral wall, the exterior member 30 can be displaced forward together with the rear bumper face 25.

  According to the rear bumper structure 15 of the vehicle 1 described above, the back door 9 is configured to protrude rearward from the front end of the rear bumper rain 20, and the vertical face portion of the rear bumper face 25 that faces the rear bumper rain 20 from the rear side. A bumper opening 26 is formed in at least a part of 25b, and an exterior member 30 provided separately from the rear bumper rain 20 and the rear bumper face 25 is attached to the bumper opening 26 so as to be exposed rearward.

  Accordingly, for example, the exterior member 30 can form a sporty exterior surface to improve design, and the exterior member 30 is opposed to the rear bumper rain 20 from the rear side and more than the back door 9. Since it has the bumper rain opposing main body 31 having a predetermined longitudinal length so as to protrude rearward, when the vehicle 1 is rearwardly impacted, an obstacle such as a pole or other vehicle hits the bumper rain opposing main body 31 before the back door 9. It becomes easy.

  When the vehicle 1 has a light rear impact (a rear impact that does not damage the rear bumper rain 20), if the obstacle hits the bumper rain opposing main body 31 before the back door 9, the bumper rain opposing main body 31 is By setting the predetermined longitudinal length so as to protrude rearward from the back door 9 in contact with the rain 20, a reaction force is applied to the rear bumper rain 20, and the obstacle is received. Can be prevented from hitting the back door 9.

  That is, the back door 9 can be prevented from being damaged by hitting an obstacle, and even if the bumper rain opposing main body portion 31 is damaged by receiving an obstacle, the bumper face 25 (main body portion) is prevented from being damaged. Since the entire bumper face 20 is not required to be replaced and only the exterior member 30 is replaced, it is possible to prevent the repair cost from becoming expensive.

  In particular, the back door 9 is configured such that the center portion in the vehicle width direction protrudes rearward from the rear bumper rain 20, and the bumper rain facing main body portion 31 corresponds to at least the center portion in the vehicle width direction of the back door 30 among the exterior members 30. Since the vehicle 1 is provided at the center portion in the vehicle width direction, it is possible to prevent the center portion in the vehicle width direction of the back door 9 from being damaged at the time of the light rear collision of the vehicle 1.

  Since the exterior member 30 is opposed to the rear bumper rain 20 with a gap from the rear side, the exterior member 30 is displaced toward the rear bumper rain 20 when the vehicle 1 has a very slight rear collision. 30 is prevented from being damaged by receiving an obstacle. Here, the exterior member 30 is displaced toward the rear bumper rain 20 together with the rear bumper face 25, thereby exerting an impact absorbing function. The impact on the pedestrian) can be mitigated, and after this light rear impact, the exterior member 30 is returned to eliminate the need for replacement, that is, no repair costs are required. 2 has a plurality of ventilation holes 30a that rectify by passing the running wind flowing through the lower surface side of the vehicle 2, so that the running resistance of the vehicle 1 can be reduced to improve fuel efficiency, or the wind can be reduced to the rear of the vehicle body. You can expect to or reduce fouling, that is, can increase the functionality of the package member 30 (to multifunctional).

  Since the exterior member 30 is attached to the rear bumper face 25 so that the exterior member 30 can be displaced toward the rear bumper rain 20, the exterior member 30 is opposed to the rear bumper rain 20 with a gap from the rear side. In the case of the embodiment, the exterior member 30 can be reliably displaced toward the rear bumper rain 20 without damaging the rear bumper rain 20 and the rear bumper face 25 at the time of a light rear collision of the vehicle 1.

  Next, the second and subsequent embodiments will be described. The same or similar configurations as those of the rear bumper structure 15 of the vehicle 1 of the first embodiment are denoted by the same or similar reference numerals as those of the first embodiment, and are appropriately implemented. A description of the same or similar configurations, operations, and effects as Example 1 is omitted.

  FIG. 5 is a view corresponding to FIG. 4 of the second embodiment, and FIG. 6 is a rear view of the main part of the rear bumper structure of the vehicle of the second embodiment. As shown in FIGS. 5 and 6, the rear bumper structure 15 </ b> A of the vehicle 1 </ b> A allows the exterior member 30 to be displaced toward the rear bumper rain 20, and the exterior member 30 is rear bumper face 25 as in the first embodiment. In this case, the exterior member 30 is attached to the rear bumper rain 20, and one or more attachment brackets 40 for connecting the exterior member 30 and the rear bumper rain 20 are provided as the exterior member attachment portion.

  The mounting bracket 40 is made of metal or synthetic resin, and is bent in the middle in the length direction so as to be formed in a square shape. Its front end is bolted to the upper wall portion of the rear bumper rain 20, and its rear end is exterior. The exterior member 30 can be displaced toward the rear bumper rain 20 by being fixed (for example, adhered) to the upper wall portion of the member 30 and bending the mounting bracket 40.

  A bumper opening 26A formed in the vertical face portion 25Ab of the rear bumper face 25A is fitted with an exterior member 30 but is mounted in a non-connected state, and a portion of the rear bumper face 25A facing the bumper opening 26A is not mounted. A recessed portion 25Ad is formed so as to be recessed forward from the rear side, and a frame-like bezel 41 is fixedly attached to the recessed portion 25Ad, and the outer peripheral side of the exterior member 30 is covered by the bezel 41 to cover the exterior member 30. The appearance of the included rear bumper face 25A can be improved.

  FIG. 7 is a rear view including the rear bumper structure of the vehicle according to the third embodiment, and FIG. 8 is a sectional view taken along line VIII-VIII in FIG. As shown in FIGS. 7 and 8, the rear bumper structure 15B of the vehicle 1B is provided separately from the rear bumper face 25B supported by the vehicle body 2 so as to cover the rear bumper rain 20, and the rear bumper rain 20 and the rear bumper face 25B. An exterior member 30B that can be a bumper lower is provided.

  The rear bumper face 25B is provided so as to be substantially continuous from the pair of rear aprons 4 and has an upper horizontal face portion 25Ba extending rearward from the vicinity of the rear cross member 7 and a rear end of the upper horizontal face portion 25Ba. A vertical face portion 25Bb.

  A bumper opening 26B is formed in a portion of the rear bumper face 25B including at least a part of the vertical face portion 25Bb facing the rear bumper rain 20 from the rear side. Specifically, the bumper opening 26B is located on the rear side and the lower side of the rear bumper rain 20, has a longer vehicle width direction length than the rear bumper rain 20, and is formed in a notch shape with an open bottom end. Yes.

  The exterior member 30B includes a vertical exterior part 30Ba that is substantially continuous with the vertical face part 25Bb of the rear bumper face 25B, and a lower horizontal exterior part 30Bb that protrudes forward from the lower end of the vertical exterior part 30Ba. The edge portions of the upper end and the left and right ends are fitted into the edge portions of the bumper opening 26B of the rear bumper face 25B. For example, the outer member is joined by a plurality of fasteners or the like with the flanges of these edge portions in contact with each other. 30B is mounted on the bumper opening 26B so as to be exposed rearward.

  The exterior member 30B is opposed to the rear bumper rain 20 with a gap from the rear side at least in the vehicle width direction center portion (the whole in the present embodiment) corresponding to the vehicle width direction center portion of the back door 9 of the exterior member 30B. And a bumper rain facing main body 31B having a predetermined longitudinal length so as to protrude rearward from the back door 9.

  The bumper rain opposing main body 31B is a plurality of horizontal opposing pieces 31Ba protruding forward from the vertical exterior part 30Ba, and has a plurality of horizontal opposing pieces 31Ba that are long in the vehicle width direction and provided over a plurality of upper and lower stages. In the exterior member 30B, a plurality of ventilation slit portions 30Bc penetrating forward and backward are formed between the plurality of horizontally opposed pieces 31Ba, and these ventilation slit portions 30Bc flow on the lower surface side of the vehicle body 2 when the vehicle 1 travels. 8 corresponds to a ventilation portion that rectifies the wind by running air A indicated by a virtual line.

  The rear protrusion amount of the bumper rain opposing main body portion 31B relative to the back door 9 in the vehicle width direction central portion is LB2 shown in FIG. 8, and the gap between the rear bumper rain 20 and the bumper rain opposing main body portion 31B is LB3 shown in FIG. The predetermined longitudinal length of the bumper rain opposing main body 31B is LB shown in FIG. And L1, LB2, LB3, and LB are set so that LB-LB3> L1.

  In addition, as described above, the edge portion of the exterior member 30 is used as an exterior member attachment portion for attaching the exterior member 30B to the rear bumper face 25B so that the exterior member 30B can be allowed to be displaced toward the rear bumper rain 20 (forward). The outer bumper face 25B is fitted and coupled to the edge portion of the bumper opening 26B of the rear bumper face 25B. Thus, the exterior member 30B can be displaced forward together with the deformation of the rear bumper face 25B.

  FIG. 9 is a rear view including the rear bumper structure of the vehicle according to the fourth embodiment, and FIG. 10 is a cross-sectional view taken along the line XX of FIG. As shown in FIGS. 9 and 10, the rear bumper structure 15 </ b> C of the vehicle 1 </ b> C forms a metal closed cross section that extends in the vehicle width direction on the rear end side of the pair of rear side frames 3 of the vehicle body 2. A rear bumper rain 20C, a rear bumper face 25C supported by the vehicle body 2 so as to cover the rear bumper rain 20C, and an exterior member 30C that is provided separately from the rear bumper rain 20C and the rear bumper face 25C and can be a part of the bumper lower. Yes.

  The rear bumper rain 20C has a first member 20Ca that forms a U-shaped open section that opens rearward, and a second member 20Cb that is fixed to the first member 20Ca so as to close the open end of the first member 20Ca. The left and right ends are connected to a pair of rear side frames 3 via a pair of left and right connecting members (for example, a crash can). Instead of the rear bumper rain 20C, a rear bumper rain 20 that forms a U-shaped open section that opens the front of the first embodiment may be adopted.

  As in the first embodiment, the rear bumper rain 20C is formed in a shape that most of the vehicle body 2 extends straight in the vehicle width direction and the left and right end portions are curved slightly forward (not shown). The back door 9 which is the rear end portion is configured to protrude rearward from the front end of the rear bumper rain 20C, and the center portion of the back door 9 in the vehicle width direction protrudes rearward from the rear bumper rain 20C. The rearward protrusion amount of the back door 9 with respect to the rear bumper rain 20C at the center in the vehicle width direction is LC1 shown in FIG.

  The rear bumper face 25C is provided so as to be substantially continuous from the pair of rear aprons 4, and has an upper horizontal face portion 25Ca extending rearward from the vicinity of the rear cross member 7 and a rear end of the upper horizontal face portion 25Ca at the rear end portion. And a vertical face portion 25Cb connected to the vertical face portion.

  A bumper opening 26C is formed in a portion of the rear bumper face 25C including at least a part of the vertical face portion 25Cb facing the rear bumper rain 20C from the rear side. Specifically, the bumper opening 26C is located on the rear side and the lower side of the rear bumper rain 20C, has a shorter vehicle width direction length than the rear bumper rain 20C, and is formed in a notch shape with an open bottom. Yes.

  The exterior member 30C includes a vertical exterior portion 30Ca that is substantially continuous with the vertical face portion 25Cb of the rear bumper face 25C, and a lower end horizontal exterior portion 30Cb that protrudes forward from the lower end of the vertical exterior portion 30Ca. The edge portions of the upper end and the left and right ends are fitted into the edge portions of the bumper opening 26C of the rear bumper face 25C. For example, the exterior members are joined by a plurality of fasteners or the like with the flanges of these edge portions in contact with each other. 30C is attached to the bumper opening 26C so as to be exposed rearward.

  The exterior member 30C is in contact with the rear bumper rain 20C from the rear side and protrudes rearward from the back door 9 at least in the vehicle width direction central portion corresponding to the vehicle width direction central portion of the back door 9 of the exterior member 30C. Thus, the bumper rain opposing main body 31C having a predetermined longitudinal length is provided. The exterior member 30 </ b> C has a license plate mounting portion 45 that is recessed rearward and attaches the license plate 11 </ b> C, and the bumper rain facing main body portion 31 </ b> C has an inclined top that moves upward toward the rear of the license plate mounting portion 45. It has an edge wall part 45a.

  The rearward protrusion amount of the bumper rain facing main body portion 31C with respect to the back door 9 in the vehicle width direction central portion is LC2 shown in FIG. 10, and the predetermined longitudinal length of the bumper rain facing main body portion 31C is the same LC as LC2 shown in FIG. LC1, LC2, and LC are set so that LC (LC2)> LC1.

  In addition, the bumper rain opposing main body 31C (upper edge wall portion 45a) is formed in an inclined shape so as to move upward toward the rear so that the outer member 30C can be displaced toward the rear bumper rain 20C (front). As described above, the edge portion of the exterior member 30C is fitted and joined to the edge portion of the bumper opening 26C of the rear bumper face 25C as the exterior member attachment portion for attaching 30C to the rear bumper face 25C. Both the rear bumper face 25B and the exterior member 30C themselves can be displaced forward together with deformation.

  Other than the matters disclosed in the first to fourth embodiments, various modifications can be added without departing from the spirit of the present invention. For example, the shape of the rear bumper train is not limited to the above shape. And the rear bumper structure of the vehicle which can exhibit the said effect | action and effect irrespective of the shape of a rear bumper rain can be provided. Further, the rear end portion of the vehicle body above the rear bumper train can be a vehicle body portion other than the back door, that is, the present invention can be applied to various vehicles.

FIG. 3 is a rear view including the rear bumper structure of the vehicle according to the first embodiment. 1 is a plan view including a rear bumper structure of a vehicle according to a first embodiment. 1 is a perspective view of a rear bumper reinforcement or the like according to Embodiment 1. FIG. It is the IV-IV sectional view taken on the line of FIG. FIG. 6 is a diagram corresponding to FIG. 4 of the second embodiment. FIG. 6 is a rear view of a main part of a rear bumper structure for a vehicle according to a second embodiment. FIG. 6 is a rear view including a rear bumper structure of a vehicle according to a third embodiment. It is the VIII-VIII sectional view taken on the line of FIG. FIG. 10 is a rear view including a rear bumper structure of a vehicle according to a fourth embodiment. FIG. 10 is a sectional view taken along line X-X in FIG. 9.

Explanation of symbols

1, 1A, 1B, 1C Vehicle 2 Body 3 Rear side frame 15, 15A, 15B, 15C Rear bumper structure 20, 20C Rear bumper reinforcement (rear bumper rain)
25, 25A, 25B, 25C Rear bumper faces 26, 26A, 26B, 26C Bumper openings 26a, 26b Supporting pieces 27a, 27b Claw parts 30, 30B, 30C Exterior members 30a Ventilation holes 30Bc Ventilation slits 31, 31B Bumper rain opposing body Part 40 mounting bracket 45 license plate mounting part 45a upper edge wall part

Claims (5)

A vehicle having a rear bumper reinforcement erected to extend in the vehicle width direction on the rear end side of the pair of left and right rear side frames of the vehicle body, and a rear bumper face supported by the vehicle body so as to cover the rear bumper reinforcement In the rear bumper structure of
The rear end of the vehicle body above the rear bumper reinforcement is configured to protrude rearward from the front end of the rear bumper reinforcement,
A bumper opening formed in a portion including at least a portion facing the rear bumper reinforcement from the rear side of the rear bumper face;
It is provided separately from the rear bumper face and is mounted in a rear exposed manner at the bumper opening, and has a predetermined longitudinal length so as to face the rear bumper reinforcement from the rear side and protrude rearward from the rear end of the vehicle body. An exterior member having a bumper rain opposing main body portion;
A vehicle rear bumper structure characterized by comprising: A part of the rear end of the vehicle body in the vehicle width direction is configured to protrude rearward from the rear bumper reinforcement,
2. The vehicle rear bumper structure according to claim 1, wherein the bumper rain opposing main body portion is provided in at least a portion of the exterior member corresponding to the vehicle width direction portion of the rear end portion of the vehicle body. .   2. The exterior member according to claim 1, wherein the exterior member has a ventilation portion that faces the rear bumper reinforcement with a gap from the rear side and rectifies the vehicle by running air that flows on the lower surface side of the vehicle body when the vehicle is running. 2. A rear bumper structure for a vehicle according to 2.   3. The exterior member according to claim 1, wherein the exterior member has a license plate mounting portion that is recessed rearward and the bumper rain facing main body portion has an upper edge wall portion of the license plate mounting portion. The vehicle rear bumper structure described.   The exterior member attaching part which attaches the exterior member to one of the rear bumper reinforcement and the rear bumper face so as to allow the exterior member to be displaced toward the rear bumper reinforcement. 4. The rear bumper structure for a vehicle according to any one of 4 above.