JP4852007B2 - Body front structure - Google Patents

Description

  The present invention relates to a vehicle body front structure in which an impact absorbing member is provided on the front side of a bumper beam.

Some vehicle body front structures include an impact absorbing member on the front side of the front bumper beam. This impact absorbing member is formed so that the height dimension is substantially the same as the height dimension of the front bumper beam.
By providing the front bumper beam with an impact absorbing member, it is possible to suppress the influence exerted on the vehicle body by absorbing the generated load with the impact absorbing member when colliding with an obstacle (see, for example, Patent Document 1).
JP-A-2005-88697

By the way, in order to absorb the load satisfactorily by the shock absorbing member, it is preferable that the height of the shock absorbing member is the same as the height of the obstacle.
By ensuring the height of the shock absorbing member equal to the height of the obstacle, the obstacle can be satisfactorily received by the shock absorbing member in the event of a collision.

However, some types of obstacles have different heights. For example, there are those that collide with the upper half of the shock absorbing member and those that collide with the lower half of the shock absorbing member.
When an obstacle collides with the upper half or the lower half of the shock absorbing member, the obstacle cannot be received throughout the shock absorbing member.
Therefore, the obstacle slides with respect to the shock absorbing member, and it is difficult to receive a good shock with the shock absorbing member. For this reason, it is difficult to satisfactorily absorb the load acting when the obstacle hits with the impact absorbing member.

  An object of the present invention is to provide a vehicle body front structure that can absorb a load caused by a collision even when the height of an obstacle is different from that of an impact absorbing member.

According to a first aspect of the present invention, in the vehicle body front structure in which an impact absorbing member is provided on the front side of the bumper beam, the impact absorbing member is divided into a central portion in the vehicle width direction, and the central portion is divided into an upper portion and a lower portion. A slit is extended in the left-right direction, and the upper part is a vertical rib that vertically connects at least a lateral rib and a peripheral rib projecting from the upper peripheral edge of the slit toward the rear of the vehicle body on the back surface facing the bumper beam. The lower portion has upper and lower peripheral ribs projecting from the lower peripheral edge of the slit toward the rear of the vehicle body and the lower wall of the peripheral wall of the shock absorbing member on the back surface facing the bumper beam. The shock absorbing member is made of polypropylene, and the lower wall of the lower part is arranged at the same position as the lower wall of the bumper beam. And the upper part is formed so that the height of the shock absorbing member is larger than the height of the bumper beam so that the upper part can protrude above the bumper beam, and the upper part is formed on the back surface facing the bumper beam. A center positioning pin is provided, and at the back of the lower part facing the bumper beam, and at both ends of the slit, a center locking claw that can be temporarily fixed to the bumper beam and movable to the rear of the vehicle body is provided. Features.
According to a second aspect of the present invention, a support gusset interposed between the shock absorbing member and the bumper beam is provided at the center of the bumper beam in the vehicle width direction, and the height of the support gusset is higher than the height of the bumper beam. is set larger, the central locating pin is insertable into the center positioning hole of the support gusset, the shock absorbing member is configured to face the support gusset, facing the left and right sides of the bumper beam, facing to the left and right sides The left and right ends of the shock absorbing member are thicker than the center facing the support gusset, and are fixed to the bumper beam with bolts.

In the invention according to claim 1, the upper portion is formed to have a large height with respect to the bumper beam so as to protrude above the bumper beam.
Furthermore, the slit was provided in the center part of the vehicle width direction among shock-absorbing members. By extending this slit in the left-right direction, the central part in the vehicle width direction was divided into an upper part and a lower part.

The lower portion of the shock absorbing member in a state of being disposed at the same height as the bottom of the front bumper beam can be protruded shock absorbing member above the bumper beam.
In addition, by dividing the center portion in the vehicle width direction upper and lower, when the position of the obstacle is high relative to the bumper beam, Ru can receive obstacles at the top of the shock absorbing member.

  In particular, since the shock absorbing member protrudes above the bumper beam, the obstacle can be satisfactorily received at the upper portion of the shock absorbing member even when the position of the obstacle is somewhat higher than the bumper beam.

The lower part of the shock absorbing member can be deformed downward to absorb the load.
  In addition, after the lower part of the shock absorbing member is deformed downward, the lower part of the shock absorbing member and the lower part of the support gusset can receive obstacles reliably and absorb the load reliably. it can.

  As described above, according to the first aspect, even when the height of the obstacle is higher or lower than the bumper beam, there is an advantage that the load due to the collision can be absorbed well by the shock absorbing member. is there.

Further, the shock absorbing member is provided with a central locking claw of a fixing means movable at the rear of the vehicle body at both ends of the slit on the back surface facing the bumper beam.
By providing the shock absorbing member with the central locking claw of the fixing means , the central locking claw of the fixing means can be inserted into the bumper beam and locked to the back surface side of the bumper beam.
Therefore, when the impact absorbing member is moved toward the bumper beam, let me smoothly penetrate the fastening means on the back side of the bumper beam, the central locking fixing means movable moving the rear of the vehicle body of the shock absorbing member You can prevent it with your nails .

  Thus, when an obstacle is received at the upper or lower portion of the shock absorbing member, there is an advantage that the upper or lower portion of the shock absorbing member can be favorably moved toward the bumper beam with the slit as a boundary to absorb the shock. .

In addition, by providing the shock absorbing member with the central locking claw of the fixing means , there are advantages that the number of parts can be reduced and the assembly can be facilitated.
In the invention according to claim 2, the support gusset interposed between the shock absorbing member and the bumper beam is provided at the center of the bumper beam in the vehicle width direction, and the height of the support gusset is higher than the height of the bumper beam. Since it is set large, the upper part of the support gusset can be deformed to absorb the load. Thereby, the load which acted on the upper part of the impact-absorbing member can be reliably absorbed by the upper part or the upper part of the support gusset.

  The best mode for carrying out the present invention will be described below with reference to the accompanying drawings. Note that “front”, “rear”, “left”, and “right” indicate the direction viewed from the driver, the front side is Fr, the rear side is Rr, the left side is L, and the right side is R.

FIG. 1 is a front view showing a vehicle body front structure according to the present invention, and FIG. 2 is an exploded perspective view showing a vehicle body front structure according to the present invention.
The vehicle body front structure 10 includes left and right extensions 14 and 15 provided at front end portions 11a and 12a of left and right front side frames 11 and 12, respectively, and a front bumper beam (bumper) provided across the left and right extensions 14 and 15. Beam) 16 and an impact absorbing member 20 attached to the front bumper beam 16.
That is, the vehicle body front part structure 10 is provided with an impact absorbing member 20 on the front side of the front bumper beam 16.

  The front bumper beam 16 includes a beam body 22 provided across the left and right extensions 14, 15, left and right covers 23 and 24 provided at the left and right front ends of the beam body 22, and left and right rear ends of the beam body 22. Left and right reinforcing portions 25, 26 provided in the central portion, a central reinforcing portion 27 provided in the central portion of the beam main body 22, a plurality of plates 28 (see FIG. 3) provided in the beam main body 22, and the beam And a support gusset 18 provided at the vehicle width direction center portion 29 of the main body 22.

The beam body 22 includes a front wall 31, an upper wall 32 bent from the upper side of the front wall 31 toward the rear of the vehicle body, an upper bent portion 33 bent downward from the rear side of the upper wall 32, and a front wall A lower wall (lower part) 34 bent from the lower side of the vehicle 31 toward the rear of the vehicle body and a lower bent part 35 bent upward from the rear side of the lower wall 34 are formed in a substantially C-shaped cross section ( (See also FIG. 6).
The beam body 22 has a height dimension of H1.

The front wall 31 is a belt-like plate extending in a curved shape across the left and right extensions 14 and 15, and a bulging portion 37 is provided at the center in the vertical direction.
The bulging portion 37 is a portion that bulges toward the front of the vehicle body, and extends from the left end portion 31a of the front wall 31 to the right end portion 31b.

The bulging portion 37 has a left positioning hole 41 formed at the left end portion 37a and a right positioning hole 42 formed at the right end portion 37b.
Further, a left locking hole 43 is formed in the left end portion 31a and a right locking hole 44 is formed in the right end portion 31b of the front wall 31 below the bulging portion 37.

The left cover 23 has a left mounting hole 46 formed in the outer lower portion. A left mounting hole (not shown) is formed on the left end 31 a of the front wall 31 coaxially with the left mounting hole 46. A nut 47 (see FIG. 3) is provided coaxially with the left mounting hole and on the back surface of the left end portion 31a.
The right cover 24 is a member that is bilaterally symmetrical with the left cover 23, and has a right mounting hole (not shown) formed in an outer lower portion. A right mounting hole (not shown) is formed on the right end 31 b of the front wall 31 coaxially with the right mounting hole.
A nut 47 (not shown) is provided coaxially with the right mounting hole and on the back surface of the right end portion 31b.

FIG. 3 is a perspective view showing a state in which the vehicle body front structure according to the present invention is viewed from the rear of the vehicle body, and FIG. 4 is an exploded perspective view of FIG.
As shown in FIG. 2, the support gusset 18 includes a gusset front wall 51 disposed in front of the front wall 31, a gusset upper wall 52 bent rearward from the upper side of the gusset front wall 51, and a gusset front wall 51. A gusset lower wall 53 bent rearward from the lower side of the vehicle body is formed in a substantially U-shaped cross section (see also FIG. 6).
The support gusset 18 has a height dimension of H2. The height dimension H2 is set larger than the height dimension H1 of the beam body 22.

The gusset front wall 51 is disposed so as to face the central portion of the front wall 31 in the vehicle width direction. The gusset front wall 51 is provided with a concave portion 55 (see also FIG. 2) below the central portion in the vertical direction.
The recessed portion 55 is a portion where the front side of the vehicle body is recessed (see FIGS. 2 and 6), and extends from the left end portion 51a of the gusset front wall 51 to the right end portion 51b.

As shown in FIG. 2, four central positioning holes 57 are formed at predetermined intervals in the gusset front wall 51 on the upper portion of the recess 55.
Further, a left center locking hole 58 (see also FIG. 2) is formed in the left end 51a and a right center locking hole in the right end 51b in the lower portion of the recess 55 in the gusset front wall 51. 59 (see also FIG. 2).

The gusset upper wall 52 includes a front horizontal portion 61 projecting horizontally from the upper side of the gusset front wall 51 to the rear of the vehicle body, an inclined portion 62 projecting downward from the front horizontal portion 61 to the rear of the vehicle body, and a rear portion of the vehicle body from the inclined portion 62. And a horizontal portion 63 after projecting horizontally.
The front horizontal portion 61 is disposed at a position higher than the rear horizontal portion 63 by H3.

The gusset lower wall 53 is a wall portion that projects horizontally from the lower side of the gusset front wall 51 to the rear of the vehicle body.
The distance between the gusset lower wall 53 and the rear horizontal portion 63 is set to be slightly larger than the height dimension H1 of the beam body 22.
A gusset upper wall 52 and a gusset lower wall 53 are fitted into the upper and lower walls 32, 34 of the beam body 22.
The rear horizontal portion 63 of the gusset upper wall 52 is joined to the upper wall 32, and the rear side 53a of the gusset lower wall 53 is joined to the lower wall 34 (see FIG. 6).

The shock absorbing member 20 is disposed to face the support gusset 18 and to face the left and right side portions 65 and 66 of the front bumper beam 16.
The shock absorbing member 20 is a PP (polypropylene) member having a front plate 71 (see FIG. 2) formed in a substantially rectangular shape and a peripheral wall 72 projecting from the periphery of the front plate 71 to the rear of the vehicle body. is there.

  Further, the shock absorbing member 20 is provided in a grid pattern on the left side of the back surface 71a of the front plate 71 in the form of a grid and on the right side of the back surface 71a of the front plate 71. The vertical ribs 78 and the horizontal ribs 79, the vertical ribs 81 and the horizontal ribs 82 provided in the center of the back surface 71a of the front plate 71, and the fixing provided on the back surface 71a of the front plate 71. Means 85.

The fixing means 85 includes left and right positioning pins 91 and 92 provided at the left and right ends of the back surface 71a of the front plate 71, and left and right locking claws 93 and 94 provided near the left and right positioning pins 91 and 92, respectively. The four center positioning pins 95 provided on the rear surface of the center portion of the front plate 71 and the left and right center locking claws 96 and 97 provided below the four center positioning pins 95 are provided.
The back surface 71 a of the front plate 71 is a surface facing the front bumper beam 16.

The impact absorbing member 20 is set to be slightly larger in height than the support gusset 18.
That is, the impact absorbing member 20 is formed such that the height dimension H4 is larger than the height dimension H1 of the front bumper beam 16.

The front plate 71 has a left mounting hole 101 (see FIGS. 1 and 2) formed in the lower left portion and a right mounting hole 102 (see FIG. 2) formed in the lower right end.
Further, as shown in FIG. 1, the front plate 71 is provided with a slit 104 at the center 106 in the vehicle width direction below the center in the vertical direction.

The slit 104 is formed at a position facing the concave portion 55 of the gusset front wall 51 (see FIG. 6).
A peripheral rib 105 projects from the peripheral edge 104a (see FIG. 1) of the slit 104 toward the rear of the vehicle body.
By providing the slit 104 in this way, the shock absorbing member 20 has a central portion 106 in the vehicle width direction divided into an upper portion 106a and a lower portion 106b.

The left and right positioning pins 91 and 92 are pins formed with substantially the same diameter from the distal end portion to the proximal end portion.
The left and right positioning pins 91 and 92 are pins that can be inserted into the left and right positioning holes 41 and 42 (see FIG. 2) up to the base end.

The left and right latching claws 93 and 94 are claws that can be latched on the back side of the left and right latching holes 43 and 44 (see FIG. 2) provided in the beam body 22.
The left and right locking claws 93 and 94 can smoothly move (pierce through) the vehicle body rearward from the left and right locking holes 43 and 44 (see FIG. 2).

The four central positioning pins 95 are pins formed with substantially the same diameter from the distal end portion to the proximal end portion.
The four central positioning pins 95 are pins that can be inserted into the four central positioning holes 57 (see FIG. 2) provided in the support gusset 18 up to the base end portion.

The left and right central locking claws 96 and 97 are claws that can be locked to the back side of the left and right central locking holes 58 and 59 (see also FIG. 2) provided in the support gusset 18.
The left and right central locking claws 96 and 97 can smoothly move (pierce through) the vehicle body rearward from the left and right central locking holes 58 and 59 (see FIG. 2).

That is, by providing the fixing means 85 in the shock absorbing member 20, the fixing means 85 can be inserted into the bumper beam 16 and locked to the back surface side of the bumper beam 16.
Therefore, when the shock absorbing member 20 moves in the direction approaching the bumper beam 16, the fixing means 85 is smoothly penetrated to the back surface side of the bumper beam 16 so that the movement of the shock absorbing member 20 is not blocked by the fixing means 85. Can be.

  As a result, when an obstacle is received at the upper or lower portion of the shock absorbing member 20, the upper portion 106a or the lower portion 106b of the shock absorbing member 20 is favorably moved toward the bumper beam 16 with the slit 104 as a boundary. Can absorb.

  In addition, by providing the shock absorbing member 20 with the fixing means 85, it is possible to reduce the number of parts and facilitate assembly.

Next, a procedure for attaching the shock absorbing member 20 to the front bumper beam 16 and the support gusset 18 will be described with reference to FIGS.
As shown in FIG. 2, an impact absorbing member 20 is disposed in front of the front bumper beam 16 and the support gusset 18.
The shock absorbing member 20 is moved toward the front bumper beam 16 and the support gusset 18.

The left and right locking claws 93 and 94 are inserted into the left and right locking holes 43 and 44, respectively, and the left and right central locking claws 96 and 97 are inserted into the left and right central locking holes 58 and 59, respectively.
At the same time, the left and right positioning pins 91 and 92 are inserted into the left and right positioning holes 41 and 42, respectively, and the four central positioning pins 95 are inserted into the four central positioning holes 57, respectively.
In this state, the impact absorbing member 20 is further moved toward the front bumper beam 16 and the support gusset 18.

Since the left and right locking claws 93 and 94 are symmetrical members, only the left locking claw 93 will be described below, and the description of the right locking claw 94 will be omitted.
Similarly, since the left and right central locking claws 96 and 97 are symmetrical members, only the left central locking claw 96 will be described below, and the description of the right central locking claw 97 will be omitted.

5 is a sectional view taken along line 5-5 in FIG. 1, FIG. 6 is a sectional view taken along line 6-6 in FIG. 1, FIG. 7 is a sectional view taken along line 7-7 in FIG. FIG.
As shown in FIG. 5, the left locking claw 93 is locked in the left locking hole 43, and the left central locking claw 96 is locked in the left central locking hole 58 as shown in FIG. 6.
As shown in FIG. 7, the left positioning pin 91 is inserted into the left positioning hole 41, and as shown in FIG. 6, the center positioning pin 95 (only the left center positioning pin 95 is shown) is inserted into the center positioning hole 57.
Thereby, the impact absorbing member 20 is temporarily fixed (temporarily fixed) to the front bumper beam 16 and the support gusset 18 by the fixing means 85 (see FIG. 4).

Here, as shown in FIGS. 5 to 7, the fixing unit 85 is configured so that the shock absorbing member 20 moves in a direction approaching the bumper beam 16 by inserting the fixing unit 85 through the bumper beam 16. I won't stop.
Thus, when an obstacle is received at the upper part 106a or the lower part 106b of the shock absorbing member 20, the upper part 106a or the lower part 106b of the shock absorbing member 20 is moved favorably toward the bumper beam 16 with the slit 104 as a boundary. Can absorb shocks.

Returning to FIG. 2, the bolt 108 is inserted into the left mounting hole 101 of the shock absorbing member 20 and the left mounting hole 46 of the front bumper beam 16.
At the same time, the bolt 108 is inserted into the right mounting hole 102 (see FIG. 1) of the shock absorbing member 20 and the right mounting hole (not shown) of the front bumper beam 16.

As shown in FIG. 8, a screw portion 108 a protruding from a left mounting hole (not shown) formed in the left end portion 31 a of the beam body 22 is screwed to the nut 47.
Similarly, a screw portion 108a protruding from a right mounting hole (not shown) formed in the right end portion 31b of the beam body 22 is screwed to a nut 47 (not shown).
Thereby, the shock absorbing member 20 is attached to the front bumper beam 16 and the support gusset 18 by the screw connection of the bolts 108 and 108.

Next, an example in which a load acts on the shock absorbing member 20 will be described with reference to FIGS.
First, an example in which the load F1 acts on the upper portion 106a of the shock absorbing member 20 will be described with reference to FIG.

FIGS. 9A and 9B are diagrams illustrating an example in which a load is applied to the upper part of the shock absorbing member according to the present invention.
In (a), the height dimension H4 of the impact absorbing member 20 is set larger than the height dimension H1 of the front bumper beam 16. Further, the lower wall (lower part) 72 a of the shock absorbing member 20 is disposed at the same position as the height of the lower wall 34 of the front bumper beam 16.
The lower wall 72a is a lower wall of the peripheral wall 72.

Therefore, substantially the upper half of the upper portion 106 a of the shock absorbing member 20 is disposed (projected) above the front bumper beam 16.
Thereby, even when the obstacle 112 is at a position higher than the front bumper beam 16, the obstacle 112 can be reliably received by the upper portion 106a.

In (b), the load F1 acts on the upper part 106a by receiving the obstacle 112 by the upper part 106a.
Here, the center positioning pin 95 is a pin that can be inserted into the center positioning hole 57 up to the base end.

Therefore, the longitudinal ribs 81, the lateral ribs 82, and the peripheral rib 105 provided on the back surface of the upper portion 106a can be deformed to absorb the load F1.
In addition, in the support gusset 18, the upper portion 18a on the upper side of the recess 55 can be deformed to absorb the load F1.
Thereby, the load F1 which acted on the upper part 106a can be reliably absorbed by the upper part 106a and the upper part 18a.

In particular, the shock absorbing member 20 protrudes above the bumper beam (beam body 22) 16.
Thereby, even when the position of the obstacle 112 is higher than the bumper beam (beam main body 22) 16 to some extent, the obstacle 112 can be satisfactorily received by the upper portion 106a of the shock absorbing member 20.

Next, an example in which the load F2 is applied to the lower portion 106b of the shock absorbing member 20 will be described with reference to FIG.
FIGS. 10A and 10B are diagrams illustrating an example in which a load is applied to the lower part of the shock absorbing member according to the present invention.
In (a), by providing the impact absorbing member 20 with the slit 104, the central portion 106 in the vehicle width direction is divided into an upper portion 106a and a lower portion 106b.
When the upper half of the obstacle 112 is located below the front bumper beam 16, the upper half of the obstacle 112 is received by the lower portion 106b.

In (b), the left and right central locking claws 96 and 97 (see FIG. 6) can move smoothly from the left and right central locking holes 58 and 59 to the rear of the vehicle body.
Further, the lower portion 106 b is divided from the upper portion 106 a by the slit 104. Therefore, when the upper half of the obstacle 112 is received by the lower portion 106b, the vertical ribs 81 and the peripheral rib 105 provided on the back surface of the lower portion 106b are deformed, the lower portion 106b is compressed and spreads up and down, and the shock absorbing member 20 Since the lower wall (lower part) 72a is disposed at the same position as the lower wall 34 of the front bumper beam 16, it moves below the lower wall 34 of the front bumper beam 16, and the lower part 106b is below the front bumper beam 16. Move (deform).

The lower part 106b of the shock absorbing member 20 can be deformed downward to absorb the load F2.
In addition, after the lower portion 106b of the shock absorbing member 20 is deformed downward, the lower portion 106b of the shock absorbing member 20 and the lower portion 18b below the concave portion 55 of the support gusset 18 reliably receive the obstacle 112, The load F2 can be reliably absorbed.

  As described above, according to the vehicle body front part structure 10, the impact absorbing member 20 is provided, so that the loads F <b> 1 and F <b> 2 due to the collision can be reduced even when the height of the obstacle 112 is different from the impact absorbing member 20. It can absorb well.

In the above-described embodiment, the example in which the substantially upper half of the upper part 106a is disposed (protruded) above the front bumper beam 16 as the height dimension H4 of the shock absorbing member 20 has been described. It is also possible to make the upper portion 106a lower and to make the lower portion upside down.
Thereby, the lower part of the shock absorbing member 20 can be disposed (projected) below the front bumper beam 16.

The following advantages can be obtained by applying the shock absorbing member 20 in which the shock absorbing member 20 is turned upside down to a vehicle having a high front bumper beam 16 (that is, a vehicle having a high vehicle height).
In the case of a vehicle having a high vehicle height, it is conceivable that the position of the obstacle 112 is somewhat lower than the bumper beam 16.
Even in this case, the obstacle 112 can be satisfactorily received by the lower part of the shock absorbing member by projecting the lower part of the shock absorbing member 20 below the front bumper beam 16.
On the other hand, when the position of the obstacle 112 is higher than the bumper beam 16, the obstacle 112 can be received on the upper part of the shock absorbing member.

  Moreover, in the said embodiment, although the front bumper beam 16 was illustrated as a bumper beam, it is not restricted to this, It is also possible to apply to other members, such as a rear bumper beam.

  Furthermore, the number of vertical ribs and horizontal ribs provided on the back surface of the shock absorbing member 20 exemplified in the above embodiment can be changed as appropriate.

  The vehicle body front part structure of the present invention is suitable for application to an automobile in which an impact absorbing member is provided on the front side of the bumper beam.

It is a front view which shows the vehicle body front part structure which concerns on this invention. It is a disassembled perspective view which shows the vehicle body front part structure which concerns on this invention. It is a perspective view which shows the state which looked at the vehicle body front part structure which concerns on this invention from the vehicle body back. FIG. 4 is an exploded perspective view of FIG. 3. FIG. 5 is a sectional view taken along line 5-5 of FIG. FIG. 6 is a sectional view taken along line 6-6 of FIG. FIG. 7 is a cross-sectional view taken along line 7-7 in FIG. 1. FIG. 8 is a cross-sectional view taken along line 8-8 in FIG. 1. It is a figure explaining the example which the load acted on the upper part of the impact-absorbing member which concerns on this invention. It is a figure explaining the example which the load acted on the lower part of the impact-absorbing member which concerns on this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Car body front part structure, 16 ... Front bumper beam (bumper beam), 20 ... Shock absorption member, 71a ... The back surface of the front plate 71 (surface facing a front bumper beam), 85 ... Fixing means, 104 ... Slit, 106 ... Car Central part in the width direction, 106a... Upper part, 106b... Lower part, H1.

Claims (2)

In the vehicle body front structure in which the shock absorbing member is provided on the front side of the bumper beam,
The shock absorbing member is
A slit that divides the central part into an upper part and a lower part extends in the left-right direction at the center part in the vehicle width direction,
The upper portion has a lattice shape having vertical ribs that vertically connect at least a lateral rib and a peripheral rib projecting toward the rear of the vehicle body from the upper peripheral edge of the slit on the back surface facing the bumper beam,
The lower portion has a vertical rib that vertically connects a peripheral rib projecting from the lower peripheral edge of the slit toward the rear of the vehicle body and a lower wall of the peripheral wall of the shock absorbing member on the back surface facing the bumper beam. Having a lattice shape,
The material of the impact absorbing member is polypropylene,
The lower wall of the lower part is disposed at the same position as the lower wall of the bumper beam;
The upper part is formed so that a height dimension of the shock absorbing member is larger than a height dimension of the bumper beam so that the upper part can protrude above the bumper beam.
The upper portion is provided with a center positioning pin on the back surface facing the bumper beam,
A front center of the vehicle body is provided with a central locking claw that is movable to the rear of the vehicle body that can be temporarily fixed to the bumper beam at the lower surface of the lower surface facing the bumper beam and at both ends of the slit. Part structure. A support gusset interposed between the shock absorbing member and the bumper beam is provided at a central portion in the vehicle width direction of the bumper beam, and the height dimension of the support gusset is set larger than the height dimension of the bumper beam. ,
The center positioning pin can be inserted into a center positioning hole of the support gusset,
The shock absorbing member is opposed to the support gusset and is opposed to the left and right side portions of the bumper beam, and the left end portion and the right end portion of the shock absorbing member opposed to the left and right side portions are a center opposite to the support gusset. The vehicle body front part structure according to claim 1, wherein the front body structure is thicker and is fixed to the bumper beam with a bolt.

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