JP5935525B2 - Body front structure - Google Patents

Description

  The present invention relates to a front body structure of a vehicle, and more particularly to a structure of a reinforcement member that reinforces a front bumper.

  Conventionally, a front bumper that absorbs an impact (load) from the front is provided at a front portion of a vehicle such as an automobile or a truck. The front bumper is made of metal or resin, and is a shock absorber that extends in the vehicle width direction at the foremost end of the vehicle. The front bumper is configured by, for example, filling the inside of a bumper cover with an energy absorber such as urethane resin, and further including a reinforcement member (reinforcing material) on the inside thereof. It is attached to a vehicle by being attached to a frame or the like. For example, when the vehicle collides with the front bumper, the front bumper deforms the bumper cover and absorbs the impact by the internal energy absorber. Furthermore, the reinforcement member is deformed to absorb the impact transmitted to the reinforcement member. When the impact is large, the impact is transmitted from the front bumper to the vehicle body, and the vehicle body is deformed.

  In addition, a pair of left and right headlamps that illuminate the front from the left and right sides of the front bumper are provided at the front of the vehicle. The headlamp is fixed and supported at both ends of a member (cross member, reinforcement member, etc.) generally extended in the vehicle width direction, a member extending rearward from both ends of this member, and the like. For example, a lamp unit (head lamp) described in Patent Document 1 is attached to a shroud side member attached to a side portion extending obliquely rearward from a shroud upper member extending in the vehicle width direction. A positioning hole is formed in the shroud side member, and the lamp unit is positioned by inserting a positioning pin protruding from the lamp unit into the positioning hole.

JP-A-11-115805

  By the way, for example, when the vehicle is offset to either the left or right when traveling at a low speed, the front part of the vehicle is deformed by receiving an impact from the front of either the left or right (right or left collision side). However, an impact is not directly received from the front of either the left or right (the left or right non-collision side). Therefore, although the headlamp on the collision side is deformed by an impact from the front, the headlamp on the non-collision side is not directly deformed by the impact received from the front. Such an impact is not limited to when traveling at a low speed, and may occur when, for example, another vehicle or a two-wheeled vehicle collides with an offset front face at a low speed when the vehicle is stopped.

  In the case of such a collision, since the impact applied to either the left or right of the front part of the vehicle is transmitted to the non-collision side along the member extending in the vehicle width direction, the non-collision side of the front bumper is It will deform | transform so that it may be crushed in the direction which goes to the non-collision side from a collision side. Therefore, if the headlamp is attached to the reinforcement member of the front bumper, the non-collision side headlamp may also be deformed if the reinforcement member is crushed and deformed. It will increase. In particular, when the headlamp positioning hole is formed in the reinforcement member, the impact (stress) is concentrated on the positioning hole. The need will increase.

One of the purposes of the present case was devised in view of the above-described problems, and can suppress an increase in cost during repair when the vehicle front receives an impact that is offset to either the left or right. An object of the present invention is to provide a vehicle body front structure.
The present invention is not limited to this purpose, and is a function and effect derived from each configuration shown in the embodiments for carrying out the invention described later, and other effects of the present invention are to obtain a function and effect that cannot be obtained by conventional techniques. Can be positioned.

(1) The vehicle body front structure disclosed herein extends in the vehicle width direction of the vehicle, and supports a radiator, and extends in the vehicle width direction of the vehicle in front of the member, and includes a front bumper. Reinforcement reinforcement members and headlamps attached to both ends of the reinforcement member in the vehicle width direction, respectively, and the reinforcement members are formed in a convex shape upward at the both ends. a stepped flange portion attachment portion of the lamp is mounted, it is characterized by having a notch portion formed in the vehicle width direction inner side and the both end portions nearer the stepped flange portion.

(2) The reinforcement member includes a positioning hole for the headlamp formed in the flange portion with the step , and the notch is formed to have a length in the vehicle front-rear direction longer than the positioning hole. It is preferred that

According to the disclosed vehicle body front structure, the reinforcement member has a cutout portion on the inner side in the vehicle width direction and closer to both ends than the stepped flange portion to which the headlamp mounting portion is mounted. Even if the reinforcement member is deformed so as to be crushed to the non-collision side when an offset frontal collision occurs, the notch portion on the non-collision side can absorb the deformation of the reinforcement member. Thereby, it is possible to prevent the headlamp on the non-collision side from being damaged against the deformation of the reinforcement member being crushed toward the non-collision side. Therefore, it is possible to suppress an increase in cost at the time of vehicle repair with a simple configuration in which the notch portion is provided in the reinforcement member.

  According to the disclosed vehicle body front structure, the reinforcement member has a cutout portion on the inner side in the vehicle width direction and closer to both ends than the headlamp mounting portion. Even if the reinforcement member is deformed so as to be crushed to the non-collision side, the notch portion on the non-collision side can absorb the deformation of the reinforcement member. Thereby, it is possible to prevent the headlamp on the non-collision side from being damaged against the deformation of the reinforcement member being crushed toward the non-collision side. Therefore, it is possible to suppress an increase in cost at the time of vehicle repair with a simple configuration in which the notch portion is provided in the reinforcement member.

It is a perspective view of the body front part structure concerning one embodiment. FIG. 2 is a top view of FIG. 1. FIG. 2 is an enlarged view around the right end portion of the upper bumper force of FIG. 1, (a) is a perspective view seen from the rear, (b) is a top view, and (c) is a view in the direction of the arrow Z in FIG. It is. FIGS. 2A and 2B are diagrams for explaining an operation when a vehicle having the structure of FIG. 1 has a low-speed offset frontal collision, wherein FIG. 1A is a top view of the front portion of the vehicle before the collision, and FIG. (C) is the perspective view seen from the front which shows typically the reinforcement member at the time of a collision, and the deformation of the circumference. It is a perspective view corresponding to Drawing 3 (a), and (a)-(c) shows other examples of a notch.

  Hereinafter, embodiments will be described with reference to the drawings. Note that the embodiment described below is merely an example, and there is no intention to exclude various modifications and technical applications that are not explicitly described in the following embodiment. Each configuration of the present embodiment can be implemented with various modifications without departing from the spirit of the present embodiment, and can be selected or combined as necessary.

[1. Construction]
[1-1. Overall structure]
The vehicle body front structure according to the present embodiment will be described with reference to FIGS. In the following description, it is assumed that the traveling direction of the vehicle is the front, the left and right are determined based on the front, the direction of gravity is the lower side, and the opposite is the upper side. Further, a description will be given assuming that the side toward the center of the vehicle body is the inside and the opposite is the outside. Furthermore, “horizontal” or “vertical” in the following description does not mean strictly vertical or horizontal, and a certain amount of error or inclination is allowed. It means almost horizontal.

  A vehicle body 1 of an automobile (vehicle) includes a pair of left and right side members 2, 2 extending in the vehicle front-rear direction (hereinafter simply referred to as a front-rear direction) with a space between each other, and the pair of left and right side members 2, 2 It includes a ladder-like skeleton composed of a plurality of cross members (not shown) extending in the vehicle width direction (left-right direction) connecting the two. The front structure of the vehicle body 1 is shown in FIGS. As shown in FIGS. 1 and 2, four members extending in the vehicle width direction are provided at the front portion of the vehicle body 1, and the upper bar 4, the upper bumper reinforcement (reinforce member) 5, in order from the top. Bumper beam 6 and front cross member 7 are provided.

  The upper bar 4 is a member that is provided above the side members 2 and 2, connects the front ends of the pair of left and right front fender aprons 3 and 3, and supports a radiator (not shown). The upper bar 4 includes an upper center bar 40 provided at the center in the vehicle width direction, and a pair of left and right upper side bars 41 provided on the left and right sides of the upper center bar 40 and disposed outside the side members 2 and 2. , 41 are joined to each other.

The length of the upper center bar 40 in the vehicle width direction (the length of the upper center bar 40 in the longitudinal direction) is formed substantially the same as the distance between the side members 2 and 2, and the left and right end portions 40 c and 40 d are the side members 2. , 2 are disposed just above the front end portions 2a, 2a.
The pair of upper side bars 41, 41 has front end portions 41 a, 41 a disposed substantially directly above the front end portions 2 a, 2 a of the side members 2, 2, and left and right end portions 40 c, 40 d of the upper center bar 40. Connected. The front end portions 41a and 41a are respectively fixed to upper end portions of a pair of left and right side posts 8 and 8 extending in the vertical direction and fixed to the upper portions of the front end portions 2a and 2a of the side members 2 and 2, respectively.

  The rear end portions 41 b and 41 b of the pair of upper side bars 41 and 41 are connected to the front end portions of the front fender aprons 3 and 3 provided outside the side members 2 and 2. In other words, the upper side bar 41 is formed in a curved shape so that the rear end portion 41b is located rearward of the front end portion 41a and on the outer side in the vehicle width when viewed from the front end portion 41a. The upper bar 4 configured in this way is supported by the side members 2 and 2 via the side posts 8 and 8.

  The upper bumper reinforcement 5 and the bumper beam 6 are members that are provided at the foremost end of the vehicle body 1 and reinforce a front bumper (also referred to as a bumper fascia) (not shown). The upper bumper reinforcement 5 is provided below the upper bar 4 and above the side members 2 and 2. The length of the upper bumper force 5 (the length of the upper bumper force 5 in the longitudinal direction) is slightly shorter than the distance between the side members 2, 2. Between the lines.

  The left and right ends 5c, 5d of the upper bumper reinforcement 5 are fixed to the front ends of a pair of left and right upper supports 9, 9 extending in the front-rear direction. The rear end portion of the upper support 9 is fixed inside the side portion of the side post 8. The intermediate portion in the vehicle width direction of the upper bumper reinforcement 5 is connected to the intermediate portion in the vehicle width direction of the upper bar 4 by a plurality of (here, two) stays 10 extending in the front-rear direction. The stay 10 is a reinforcing member, the rear end portion 10 b is fixed to the front side portion of the upper center bar 40, and the front end portion 10 a is fixed to the upper portion of the upper bumper reinforcement 5. Here, the two stays 10, 10 are provided symmetrically (line symmetry) with the vehicle width direction center line as the axis of symmetry, and are provided closer to the vehicle width direction center line than the left and right ends 5c, 5d.

  The bumper beam 6 is provided almost directly below the upper bumper reinforcement 5 and at substantially the same height as the side members 2 and 2. The bumper beam 6 is formed such that its length in the vehicle width direction (length in the longitudinal direction of the bumper beam 6) is slightly longer than the distance between the side members 2 and 2. The left and right ends 6c, 6d of the bumper beam 6 are connected to the front ends of a pair of left and right lower supports 11, 11 extending in the front-rear direction. The rear end portion of the lower support 11 is fixed to the front surface of the front end portion 2 a of the side member 2.

  The front cross member 7 is a member that is provided below the side members 2 and 2 and connects the front end portions 2 a and 2 a of the side members 2 and 2, and is provided directly below the upper bar 4. The front cross member 7 is formed by joining three members, a center cross member 70 provided at the center in the vehicle width direction and a pair of left and right side cross members 71, 71 provided at both left and right ends in the vehicle width direction. Is done.

  The center cross member 70 has a radiator leg attached to an upper portion thereof. The pair of side cross members 71, 71 have one end attached to the lower part of the front ends 2 a, 2 a of the side members 2, 2 and the other end connected to the left and right ends 70 c, 70 d of the center cross member 70, respectively. The The side cross member 71 has a first portion extending downward from one end portion and a second portion extending along the vehicle width direction from the first portion to the other end portion, and is formed in a substantially L shape when viewed from the front of the vehicle. It is a member made.

  The upper bar 4, the upper bumper force 5, the bumper beam 6 and the front cross member 7 provided at the front portion of the vehicle body 1 are subjected to an impact from the front of the vehicle on the vehicle body 1 (for example, the automobile is in front of an obstacle or the like). In the case of a collision, etc.), it has a function of absorbing and mitigating shock by deformation. Among these members, the structure of the upper bumper force 5 is characteristic in the vehicle body front structure.

  1 and 2, a pair of left and right headlamps 12 and 12 are provided at the front portion of the vehicle body 1. The headlamps 12 and 12 are outside the both ends 5c and 5d of the upper bumper force 5 in the left and right direction, between the upper bar 4 and the upper bumper force 5 in the vertical direction, and in the front and rear direction. 41 is disposed in front of 41. The headlamp 12 has brackets 13 and 14 for attachment at the lower part and the upper part, respectively, and is attached to the vehicle body 1 via these brackets 13 and 14.

[1-2. Structure of Upper Bangparin Force]
Next, the structure of the upper bumper force 5 will be described with reference to FIGS. 3A to 3C are enlarged views of the periphery of the right end portion 5d of the upper bumper reinforcement 5, wherein FIG. 3A is a perspective view seen from the rear of the vehicle, FIG. 3B is a top view, and FIG. FIG. 4 is a side view of the upper bumper force 5 [viewed in the direction of arrow Z in FIG. 3A]. The periphery of the left end portion 5c of the upper bumper reinforcement 5 is obtained by reversing the configuration around the right end portion 5d.

  The upper bumper force 5 is formed of a hat-shaped member having a longitudinal cross-sectional shape in the front-rear direction. That is, the upper bumper force 5 includes an upper surface portion 51 that extends horizontally in the vehicle width direction, and two elevation surface portions 52 and 52 that extend vertically downward from both edges of the upper surface portion 51 (that is, the front-rear direction). These are formed into a cross-sectional hat shape having an opening on the lower side by two flange portions 53 and 54 that are horizontally projected from both lower ends of the two standing surface portions 52 and 52 respectively outward in the front-rear direction.

  A plurality (five here, five) of bulging portions 51A formed to bulge upward from the upper surface portion 51 are arranged in parallel in the vehicle width direction and are provided apart from each other. A through-hole for attaching a front bumper (not shown) is drilled in the top surface of the bulging portion 51A. Further, on the upper surface portions 51 of both end portions 5c and 5d of the upper bumper reinforcement 5, the front portion of a bracket 13 (attachment portion, hereinafter referred to as the lower bracket 13) provided at the lower side of the headlamp 12 is a bolt. The fastening member 15 is fixed.

  The flange portions 53 and 54 are portions that extend horizontally in the vehicle width direction. As shown in FIG. 2, the front flange portion 54 located on the front side of the vehicle has a length protruding forward (hereinafter also referred to as a width) that is substantially constant in the middle portion in the vehicle width direction, and is intermediate in the vicinity of the end portion. It is formed slightly larger than the width of the part. On the other hand, the rear flange portion 53 located on the rear side of the vehicle has a substantially constant width (a length protruding rearward) in the intermediate portion in the vehicle width direction, and further projects outwardly partially. It has the protruding part 53B made. In addition, a through-hole is formed in the center of the protruding portion 53B.

  The rear flange portion 53 is formed such that the widths of the left and right end portions 5c and 5d are larger than the width of the intermediate portion in the vehicle width direction. The left and right end portions 5c and 5d are provided with stepped flange portions 53A and 53A having step portions 53As that are formed to protrude upward. A portion of the stepped flange portion 53A other than the step portion 53As (that is, a planar portion having the same height as the rear flange portion 53) is referred to as a bottom surface portion 53Ab.

  The stepped flange portion 53 </ b> A has a positioning hole 55 formed on the top surface of the stepped portion 53 </ b> As by being cut out in a slit shape from the rear edge portion toward the front. The positioning hole 55 is for specifying the fixing position of the headlamp 12, and the positioning pin 13P provided on the lower surface of the lower bracket 13 is engaged therewith. The positioning pin 13P is a pin member protruding downward from the lower surface of the lower bracket 13, and is formed integrally with the lower bracket 13. Here, the positioning pin 13P is formed in the vicinity of the end of the lower bracket 13 on the inner side in the vehicle width direction, as shown in FIG.

  That is, the stepped flange portion 53 </ b> A is a portion provided for forming the positioning hole 55. The positioning hole 55 is formed at a position overlapping the lower bracket 13, and the specific position is determined by the positional relationship between the upper bumper force 5 and the headlamp 12. The size of the positioning hole 55 (hole area, length in the front-rear direction of the hole, etc.) is determined by the size and shape of the positioning pin 13P. Here, the positioning hole 55 is formed such that the length in the front-rear direction does not reach the boundary portion between the rear flange portion 53 and the elevation surface portion 52. The shape of the positioning hole 55 is not limited to a slit shape, and may be a simple hole.

  The stepped flange portion 53A has a fixing portion 95 for fixing the upper bumper reinforcement 5 and the upper support 9 to the bottom surface portion 53Ab outside the step portion 53As. In the fixing portion 95, for example, the upper bumper reinforcement 5 and the upper support 9 are fixed by a fastening member such as a bolt or welding. As shown in FIG. 1, a fixing portion 96 to which the upper bumper force 5 and the upper support 9 are fixed is also provided on the front surface portions 52 of the left and right end portions 5 c and 5 d of the upper bumper force 5. It is done. In other words, the upper bumper reinforcement 5 is fixed to the upper supports 9 and 9 at the left and right end portions 5c and 5d by the front vertical surface portion 52 and the rear flange portion 53 (stepped flange portion 53A).

  Further, the rear portion of the lower bracket 13 is fixed to the upper support 9 by the fastening member 15 behind the fixing portion 95. Accordingly, the lower bracket 13 of the headlamp 12 is attached to the vehicle body 1 so as to overlap from above the fixing portion 95 of the upper bumper force 5. In the present embodiment, the lower bracket 13 of the headlamp 12 functions as an attachment portion for attaching the headlamp 12 to the upper bumper reinforcement 5. The bracket 14 provided on the upper portion of the headlamp 12 is attached to the vehicle body 1 by being fixed to the upper surfaces of the upper side bars 41 and 41 by fastening members.

  The upper bumper reinforcement 5 has notches 56 and 56 formed inside the lower brackets 13 and 13 of the headlamps 12 and 12 and closer to both end portions 5c and 5d. The notch 56 absorbs the deformation of the upper bumper force 5 when the vehicle receives an impact from the front and the impact is shifted to either the left or right side. ) Is easy to concentrate.

  Here, “near both ends 5c, 5d” means inside the lower bracket 13 but close to both ends 5c, 5d, and is connected to at least the middle portion in the vehicle width direction. It means the outside of the stay 10 made. This is because the notch portion 56 needs to function so as to absorb the deformation of the upper bumper force 5 when it receives an impact that is offset (offset) to either the left or right side from the front. This is because the force 5 is preferably provided at a position close to both end portions 5c and 5d. In addition, as shown in FIG. 3C, the notch portion 56 is a bulging portion provided near the left and right end portions 5c and 5d among the plurality of bulging portions 51A formed on the upper surface portion 51. It is provided almost directly below 51A.

  3A and 3B, a portion (cutout portion) 53 </ b> C removed from the rear flange portion 53 to form the cutout portion 56 is indicated by a two-dot chain line. The notch 56 is formed in an elongated slit shape from the rear edge of the stepped flange 53A to the front on the bottom surface 53Ab inside the step 53As of the stepped flange 53A. The slit-shaped notch 56 is formed on the bottom surface portion 53Ab, so that a substantially triangular stepped flange portion 53A remains inside the notch 56. Here, the substantially triangular shape is provided here. The shape part is also removed together with the notch 56. This is because the substantially triangular portion is provided in order to gradually increase the width of the stepped flange portion 53 </ b> A, and becomes unnecessary by forming the notch portion 56.

  As shown in FIG. 3C, the notch 56 is formed so that the tip 56a of the notch 56 is located at the lower portion of the elevation 52 adjacent to the bottom 53Ab. In other words, the notch portion 56 extends forward from the rear edge portion of the stepped flange portion 53A, crosses the boundary portion between the stepped flange portion 53A and the elevation surface portion 52, and extends below the elevation surface portion 52 (in the vertical center). It is formed by cutting out to a position slightly below the part. That is, the notch 56 is formed so that the length in the front-rear direction is longer than the positioning hole 55 formed in the stepped portion 53As.

[2. Action, effect]
Since the front structure of the vehicle body 1 according to the present embodiment is configured as described above, when an impact that is offset to the left or right of the front part of the vehicle having this front structure is applied, the vehicle body 1 is It transforms as follows. In addition, when an impact that is offset to either the left or right of the front part of the automobile is applied, for example, when the automobile is traveling at a low speed, the obstacle 100 exists on the left front as shown in FIG. However, as shown in FIG. 4B, only the left front part may collide with the obstacle 100. Further, for example, there may be a case where a two-wheeled vehicle or another vehicle traveling at a low speed collides with the left or right side of the automobile that is stopped from the front.

  When an impact such as these is applied, a force toward the rear of the vehicle body 1 (a white arrow A in FIG. 4B) acts, so as shown in FIG. The headlamp 12 on the collision side (left side in this case) is deformed so as to be crushed backward. Further, the upper bar 4, the upper bumper reinforcement 5, the bumper beam 6 and the front cross member 7 are all deformed by being crushed rearward on the collision side, and an impact is transmitted to the non-collision side (here, the right side) [Fig. 4 (c), the white arrow Ay], and is also crushed and deformed on the non-collision side in the vehicle width direction (here, the right direction). In particular, since the upper bumper reinforcement 5 and the bumper beam 6 are provided at the front end of the vehicle body 1, they are most susceptible to impact and are easily deformed.

  Here, when the notch 56 is not provided in the upper bumper reinforcement 5, the impact transmitted to the non-collision side concentrates on the positioning hole 55 on the non-collision side, so that the vicinity of the positioning hole 55 is greatly deformed. . As a result, the lower bracket 13 of the headlamp 12 provided so as to overlap the positioning hole 55 is also damaged, so that it is necessary to replace the entire headlamp 12 at the time of repair, resulting in an increase in repair costs. Even if the upper bumper force 5 is not provided with the positioning hole 55, the impact is directly transmitted to the lower bracket 13 of the headlamp 12 via the fastening member 15. It will be necessary to replace it, resulting in an increase in cost.

  On the other hand, in the case of the vehicle body front part structure provided with the upper bumper force 5 of the present embodiment, it is closer to the inner side in the vehicle width direction and closer to the both end parts 5c and 5d than the mounting part (lower bracket 13) of the headlamp 12. Since the notches 56, 56 where stress is likely to concentrate are provided, the impact transmitted to the non-collision side concentrates on the non-collision-side notch 56, and the vicinity of the notch 56 is greatly deformed. That is, the non-collision-side cutout portion 56 can absorb the deformation of the upper bumper force 5, thereby preventing the deformation of the positioning hole 55 provided on the outside of the cutout portion 56 and the damage of the lower bracket 13. Can do.

  In other words, since the upper bumper reinforcement 5 is a reinforcing member for the front bumper, it is necessary to ensure a predetermined rigidity, but stress tends to be concentrated on a part of the upper bumper reinforcement 5 (that is, (Notably deformable) is provided. As a result, the original function of the upper bumper force 5 can be exhibited normally, and deformation of the headlamp 12 on the non-collision side can be prevented when the impact described above is applied. Therefore, it is possible to suppress an increase in cost at the time of vehicle repair with a simple configuration in which the cutout portions 56 are provided in the upper bumper reinforcement 5.

  Further, the notch 56 formed in the upper bumper reinforcement 5 is formed so as to be longer in the front-rear direction than the positioning hole 55 of the headlamp 12 formed at a position overlapping the lower bracket 13. Thereby, the deformation of the upper bumper force 5 due to the impact transmitted to the non-collision side can be more effectively absorbed in the notch 56, and the deformation in the positioning hole 55 can be reliably prevented. .

  Further, since the notch 56 is formed in the flange portion 53 of the hat-type upper bumper force 5, the rigidity required for the upper bumper force 5 is hardly affected (the required rigidity is reduced). It is possible to absorb deformation of the upper bumper force 5 at the time of collision.

  Further, when an impact offset from the front of the vehicle is applied, the upper bumper reinforcement 5 is crushed obliquely rearward. At this time, since the notched portion 56 is formed in the rear flange portion 53 located on the rear side of the hat-type upper bumper force 5, the deformation of the upper bumper force 5 can be absorbed more effectively. .

[3. Modified example]
Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.
For example, the modification of the notch part formed in the upper bumper reinforcement 5 is shown to Fig.5 (a)-(c). These are different only in the notch portions, and other configurations are the same as those of the above-described embodiment, and the same configurations are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 5A, the notch portion 57 according to this modification (first modification) is formed with a shorter slit length than the above-described notch portion 56. That is, the front end portion 57a of the notch portion 57 is formed so as to be positioned at the flange portion 53, and the elevation surface portion 52 is not notched. Further, as shown in FIG. 5B, the notch portion 58 according to this modification (second modification) is formed with a longer slit length than the notch 56 described above. That is, the front end 58 a of the notch 58 is formed so as to be located at the upper part of the vertical surface 52 (the boundary between the vertical surface 52 and the upper surface 51).

  Further, as shown in FIG. 5C, the notch 59 according to this modified example (third modified example) is a boundary portion (stepped portion) between the stepped portion 53As and the bottom surface portion 53Ab of the stepped flange portion 53A. In addition, the length of the positioning hole 55 and the slit is substantially the same. Even in the upper bumper reinforcement 5 having the notches 57, 58, 59 according to the first to third modifications, the effect obtained by the upper bumper force 5 having the notch 56 described above is obtained. Similar effects can be obtained.

  Further, in the above-described embodiments and modifications, the notches 56, 57, 58, 59 are formed in the stepped flange portion 53A, but the positions of the notches 56, 57, 58, 59 are the same. Not limited. Further, the front flange portion 54 may be provided with a notch portion, and the front flange portion 54 and the rear flange portion 53 may be provided with a notch portion. Two or more notches may be formed. The shape, size, and number of notches are preferably set as appropriate from the relationship between securing the rigidity of the upper bumper force 5 and the amount of deformation absorbed when the upper bumper force 5 is deformed by an offset collision. .

  Further, the shape and position of the brackets 13 and 14 to which the headlamp 12 is attached and the shape and position of the positioning hole 55 are not limited to those described above. Further, the shape of the upper bumper reinforcement 5 is not limited to the above. Here, an example in which the lower bracket 13 functions as an attachment portion of the headlamp 12 has been described, but the attachment portion of the headlamp 12 is not limited to this, and means a member or a part for attaching the headlamp to the reinforcement member. To do.

1 Car body 4 Upper bar 5 Upper bumper reinforcement (reinforce member)
51 Upper surface portion 52 Elevated surface portion 53 Rear flange portion 53A Stepped flange portion 54 Front flange portion 55 Positioning hole 56, 57, 58, 59 Notch portion 6 Bumper beam 7 Front cross member 9 Upper support 12 Head lamp 13 Lower bracket ( Mounting part)

Claims (4)

A member extending in the vehicle width direction of the vehicle and supporting the radiator;
A reinforcement member that extends in the vehicle width direction of the vehicle in front of the member and reinforces the front bumper;
A headlamp attached to both ends of the reinforcement member in the vehicle width direction,
The reinforcement member is formed in a convex shape upward at the both end portions, and a stepped flange portion to which the headlamp mounting portion is attached, the vehicle width direction inner side than the stepped flange portion and the both end portions and having a notch formed in the lateral deviation, the vehicle body front structure. The reinforcement member includes a positioning hole for the headlamp formed in the stepped flange portion ,
The vehicle body front part structure according to claim 1, wherein the notch is formed so that a length in a vehicle front-rear direction is longer than the positioning hole. The reinforcement member is a hat type having a lower surface opened in a longitudinal section in a vehicle longitudinal direction,
The vehicle body front part structure according to claim 1, wherein the notch is formed in the hat-shaped flange. The vehicle body front part structure according to claim 3, wherein the notch is formed in the flange located on the rear side of the vehicle.

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