JP2006168539A - Vehicle front body structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To extend a region for receiving collision load at the time of not only an offset collision but also a head-on collision. <P>SOLUTION: In this structure, branch side frames 10 branched to the vehicle width direction outside from front side frames 5 are provided. In apron reinforcements 7, the front parts have shapes suspending downward. Front end parts of the branch side frames 10 and front end parts of the apron reinforcements 7 are connected by a connecting member 33. The left and right side frames 10 are connected by a shroud lower cross member 20. The left and right apron reinforcements 7 are connected by a shroud middle cross member 32 and a shroud upper cross member 22. The shroud middle cross member 32 and the upper cross member 22 are connected by a plurality of stays 23 and 24. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a vehicle body front structure.

  Various devices have been proposed in order to increase the shock absorbing ability against a vehicle collision. Patent Document 1 proposes that a reinforcing member extending outward from the front end portion of the front side frame extending in the longitudinal direction of the vehicle body at the lower part of the engine room extends straight forward obliquely on a horizontal plane substantially common to the front side frame. is doing. According to the present invention, when the vehicle collides obliquely with the vehicle body, the collision load can be received and absorbed by the reinforcing member.

  Patent Document 2 proposes that the front end portion of the apron reinforcement is suspended substantially vertically in front of the front wheels in order to absorb this impact reliably when an offset collision occurs outside the front side frame. is doing. Further, this Patent Document 2 discloses a lower cross member that connects the front ends (lower ends) of the left and right apron reinforcements. The lower cross member is a bumper rain that connects the front ends of the left and right front side frames. It is located behind the force. Patent Document 2 further discloses a connecting member that connects an intermediate portion in the longitudinal direction of the front side frame and an intermediate portion of the apron reinforcement.

JP-A-7-187003 JP 2003-40142 A

  Patent Documents 1 and 2 both propose inventions related to offset collisions. In particular, Patent Document 2 describes that the impact of an offset collision is received and absorbed by a portion that hangs downward from an apron reinforcement. Under this purpose, in order to reinforce the apron reinforcement, the front ends of the left and right apron reinforcements, that is, the lower ends of the parts hanging downwards, are connected by lower cross members, and the lower cross members are connected. It is proposed to be located behind the bumper reinforcement.

  An object of the present invention is to provide a vehicle body front structure that can expand not only an offset collision but also a region for receiving a collision load at the time of a frontal collision.

  In order to achieve the above technical problem, the present invention basically includes a pair of left and right front side frames extending forward from the bulkhead, and branches in the middle of the front side frame in the longitudinal direction so as to be outside the vehicle width direction. And a pair of left and right branch side frames extending to the front and rear positions of the vehicle.

  By adopting such a configuration, the impact load of the frontal collision is received by the front side frame and the branch side frame extending to the front and rear position of the vehicle body substantially the same as the front end of the front side frame, and the impact is absorbed. Can do. In addition, since the branch side frame is disposed outside the front side frame in the vehicle width direction, an offset collision outside the front side frame can be received by the branch side frame to absorb the impact.

  The vehicle body front structure of the present invention also has a pair of left and right apron reinforcements that are located on the outer side in the vehicle width direction than the front side frame and to which the front side outer panel is attached. The vehicle has a shape that extends forward beyond the upper part of the front wheel and then hangs down to the front and rear positions of the vehicle body substantially the same as the front end of the front side frame. According to this, if it collided at a relatively low part with respect to the offset collision outside the front side frame, the above-mentioned branch side frame can absorb the impact and collided at a relatively high position. If it is, the impact can be absorbed by the apron reinforcement of the shape that hangs downward, and if it is a collision between the branch side frame and the apron reinforcement, the branch side frame and the apron reinforcement Can absorb the impact. Therefore, it is possible to effectively absorb an impact against an offset collision with an obstacle having various heights with respect to the offset collision. In order to make this effect effective, it is preferable that the front-rear position of the vehicle body at the front end of the apron reinforcement having a downwardly hanging shape is substantially the same as the front end of the branch side frame.

  In the vehicle body front structure of the present invention, the front end of the branch side frame is positioned lower than the front end of the apron reinforcement, and the front end of the branch side frame is connected to the front end of the apron reinforcement. Connected by means. As a result, even in the case of an offset collision outside the front side frame in the vehicle width direction, even in the case of an impact input into the gap between the branch side frame and the apron reinforcement, this impact is reduced. The front end of the side frame and the front end of the apron reinforcement can be received by the connecting means, and the received collision load is transmitted to the branch side frame and the apron reinforcement, and the branch side frame and the apron reinforcement are transmitted. And can absorb the impact.

  In a preferred embodiment of the present invention, there is further provided a lower cross member extending in the vehicle width direction, which connects the front ends of the left and right branch side frames, and this lower cross member causes a frontal collision at a relatively low level. However, the apron reinforcement which can be received by the lower cross member extending in the vehicle width direction and is not only absorbed by the branch side frame but also transmitted through the connecting means. Is also absorbed by the mentament. Therefore, it is possible to enlarge the region that can receive a frontal collision to a relatively low level.

  In a preferred embodiment of the present invention, a middle cross member extending in the vehicle width direction, which connects the front ends of the left and right apron reinforcements, and a longitudinal intermediate portion of the left and right apron reinforcements are connected. And an upper cross member extending in the vehicle width direction. According to this, the lower cross member, the middle cross member, and the upper cross member described above extend in the vehicle width direction on the front surface of the vehicle body, and the impact of the frontal collision in the region expanded vertically by these three cross members. Can receive. Preferably, the middle cross member and the lower cross member are disposed at overlapping vehicle body front and rear positions when viewed in plan. According to this, it is possible to receive the middle and low-level impacts at the time of a frontal collision simultaneously and reliably.

  In the embodiment of the present invention, the middle cross member and the lower cross member are connected by a shroud panel extending in the vehicle width direction. According to this, even if a frontal impact is input to the gap between the upper and lower middle cross members and the lower cross member, it is received by the shroud panel and transmitted to the middle cross member and the lower cross member. can do.

  In a preferred embodiment of the present invention, a middle cross member and an upper cross member located above the middle cross member are connected by a plurality of stays arranged at intervals in the vehicle width direction, and have a cross-like frame structure. ing. Needless to say, such a cross-shaped frame structure is located on the front surface of the vehicle body, so that it is possible to efficiently receive the impact of a frontal collision on a wide surface. Since the upper cross members are connected to each other by the stay, the rigidity of the vehicle body itself can be increased.

  In a preferred embodiment of the present invention, the center of the front end of the apron reinforcement is positioned higher than the center of the front end of the front side frame, and the left and right front side frames are arranged in the vehicle width direction. It is connected by a bumper reinforcement that extends to. According to this, a lower cross member, a bumper reinforcement, a middle cross member, and an upper cross member, all extending in the vehicle width direction, are arranged on the front surface of the vehicle body, and the front at various height positions. The impact is received against the collision, and the received impact can be absorbed by the front side frame, the branch side frame, and the apron reinforcement.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a schematic view of the basic structure of the front portion of the vehicle body as viewed obliquely from the front. Reference numeral 1 in FIG. 1 denotes an engine room, which is isolated from a vehicle compartment 2 behind the engine room 1 by a bulkhead 3. As in the prior art, a pair of left and right front side frames 5 extending forward from the lower part of the bulkhead 3 are provided at the side and lower part of the engine room 1, and the A pillar 6 constituting the side edge of the bulkhead 3 is provided. An apron reinforcement 7 extending forward is provided, and a front side outer panel (not shown) is attached to the outside of the apron reinforcement 7. Both the front side frame 5 and the apron reinforcement 7 have a closed cross-sectional structure. The front side frames 5 located on both sides of the lower part of the engine room 1 extend substantially straight forward from the bulkhead 3, and the front end 5a of the front side frame 5 is disposed toward the front of the vehicle body. .

  The vehicle body front part structure of the embodiment has a branch side frame 10 having a closed cross-sectional structure in which the front side frame 5 is branched outward in the vehicle width direction from the middle in the longitudinal direction (front and rear direction). The branch side frame 10 includes a skew base end portion 10a extending obliquely forward on a common horizontal plane with the front side frame 5, and an inclined portion 10b extending downward and preferably obliquely forward from the front end of the skew base end portion 10a. It has a front end portion 10c bent from the front end of the inclined portion 10b and preferably extending forward on a horizontal plane. The branch side frame 10 having such a shape extending obliquely downward toward the front in the vehicle width direction and forward is positioned such that the front end 10d is outward and in the vehicle width direction with respect to the front end 5a of the front side frame 5. is doing.

  Therefore, the vehicle body front part structure including the front side frame 5 and the branch side frame 10 has a front side as shown in FIG. 2 when an offset collision related to a forward collision of the vehicle, that is, only one side of the vehicle collides. The branch side frame 10 together with the frame 5 can also receive the impact load and absorb the impact. Reference symbol “O” in FIG. 2 indicates an obstacle. In particular, in order to ensure this effect, it is preferable that the front end 10d of the branch side frame 10 is positioned at substantially the same longitudinal position as the front side frame 5a when viewed from the side of the vehicle body. Further, since the front end 10d of the branch side frame 10 is located outward in the vehicle width direction from the front side frame 10, when there is an offset collision in an area outside the front side frame 10, the branch side frame 10 The impact load can be absorbed by receiving the collision load.

  Further, in a frontal collision having a general meaning as well as an offset collision, when there is a collision in a lower level area than the front side frame 5 (for example, a frontal collision with an automobile with a relatively low bumper height position). The impact load can be received by the branch side frame 10 to absorb the impact. This effect can be ensured by connecting the front ends 10d of the left and right branch side frames 10 with a cross member extending in the vehicle width direction.

  In the vehicle body front portion structure of the embodiment, the front portion of the apron reinforcement 7 has a shape that hangs downward instead of or together with the branch side frame 10 described above. Specifically, the apron reinforcement 7 includes an apron base end portion 7a extending forward from the A pillar 6 and straddling the front wheel 12, and a lower side, preferably obliquely downward and forward, from the front end of the apron base end portion 7a. An apron hanging portion 7b that extends and is located in front of the front wheel 12 and an apron front end portion 7c that is bent from the lower end of the apron hanging portion 7b and preferably extends forward in a horizontal plane. As a modification, the drooping portion 7b may be inclined obliquely downward and forward, and the front end 7d of the apron reinforcement 7 may be formed by the drooping portion 7b. The front end 7d of the apron reinforcement 7 is substantially the same as or slightly higher than the front end 5a of the front side frame 5, and is higher than the front end 5a of the front side frame 5 when viewed from the side of the vehicle body. Although it may be positioned slightly rearward, it is preferable that the front side frame 5 be positioned substantially at the front and rear positions of the vehicle body. Further, in relation to the branch side frame 10, the front end 7 d of the apron reinforcement 7 is located at a higher level than the front end 10 d of the branch side frame 10, and slightly more than the front end 10 d of the branch side frame 10. Although it may be located rearward, it is preferably located substantially at the same longitudinal position as the front end 10 d of the branch side frame 10.

  The apron reinforcement 7 having a shape that hangs down from the middle toward the front in this way has its front end positioned outward in the vehicle width direction with respect to the front end 5a of the front side frame 5 and substantially the same height or slightly higher. Is located. Specifically, the center of the front end 7 d of the apron reinforcement 7 is preferably positioned higher than the center of the front end 5 a of the front side frame 5. Further, in comparison with the front end 10 d of the branch side frame 10, the front end 7 d of the apron reinforcement 7 is positioned adjacent to the front end 10 d of the branch side frame 10 adjacent to the outer side in the vehicle width direction and above. Is located adjacent to

  Therefore, in the vehicle body front part structure that employs the apron reinforcement 7 having a shape that hangs downward on the way to the front, the front end of the front side frame 5 is located on each side of the vehicle when viewed from the front. 5a, the front end 10d of the branch side frame 10 outside and below the front side frame 5, and the apron reinforcement 7 outside the front side frame 5 and substantially the same as or slightly above the front side frame 5. The front end 7d is located, and these 5a, 10d, and 7d constitute the vertices of a virtual triangle 13 on a substantially common vertical plane extending in the vehicle width direction and the vertical direction (see FIG. 1).

  Thus, in the vehicle body front structure including the front side frame 5, the branch side frame 10 located outward and downward, and the apron reinforcement 7 hanging downward, the vehicle spreads vertically and horizontally in the event of an offset collision. The impact load can be received in the area having the same. Further, when there is an offset collision in a region outside the front side frame 10 in the vehicle width direction, the impact can be absorbed by receiving the collision load by the branch side frame 10 and the apron reinforcement 7.

  Further, in a frontal collision having a general meaning as well as an offset collision, when there is a collision in a region at a higher level than the front side frame 5 (for example, a frontal collision with a car having a relatively high bumper height position). The apron reinforcement 7 can absorb the impact by receiving the collision load. This effect can be ensured by providing a cross member extending in the vehicle width direction for connecting the front ends 7d of the left and right apron reinforcements 7 to be described later.

  In order to make the collision characteristics of the vehicle body front structure described above more effective, a front end portion of the front side frame 5 and the front end portion 10c of the branch side frame 10 and a front end portion of the front side frame 5 and an apron rain are provided. Between the front end portion 7c of the reinforcement 7, between the front end portion 10c of the branch side frame 10 and the front end portion 7c of the apron reinforcement 7, and these three members 5, 7, 10 are connected to each other by a connecting member or panel. It is preferable to do this.

  In the vehicle body front structure of the embodiment, the front side frame 5 and the branch side frame 10 are provided on the side of the front of the vehicle, or instead of or in addition to the branch side frame 10, An apron reinforcement 7 is provided, but these elements may be connected to each other by a cross member extending in the vehicle width direction. For example, typically, a bumper reinforcement 16 extending in the vehicle width direction is attached to the front end 5a of each front side frame 5 via a crash can 15 as shown in FIG. The left and right front side frames 5 are connected by the ment 16. FIG. 3 is a side view seen from the engine room side. Similarly, the tip portions 10c, 10c of the left and right branch side frames 10, 10 and / or the tip portions 7a, 7a of the left and right apron reinforcements 7, 7 may be connected by a cross member extending in the vehicle width direction. In this case, a crush can may be interposed between the cross member and the front end 10 d of the branch side frame 10 and / or the front end 7 d of the apron reinforcement 7.

  FIG. 4 shows that the left and right branch side frames 10, 10 are connected by a first cross member 20 extending in the vehicle width direction, and the front ends 5 a of the left and right front side frames 5, the branch side frames 10, and the apron reinforcement 7. 10d and 7d show a vehicle body front structure in which a shroud drawer panel 21 is connected, and the shroud drawer panel 21 extends between the left and right apron reinforcements 7 and 7; FIG. 5 is a plan view of FIG. 4 and 5, the left and right front side frames 5 and 5 are equipped with engines (not shown), and the left and right apron reinforcements 7 and 7 have intermediate portions in the front-rear direction. It is connected by a second cross member 22 extending in the vehicle width direction. Such cross members 20 and 22 may have a closed cross-sectional structure, or may be constituted by members having relatively rigidity opened rearward.

  4 and 5 will be described in detail. The first cross member 20 is a shroud lower cross member, and the second cross member 22 is a shroud upper cross member. The shroud upper cross member 22 is connected to the upper surface of the boundary portion between the apron base end portion 7a and the apron hanging portion 7b. The shroud drawer panel 21 has a lower end coupled to the shroud lower cross member 20 and an upper end connected to the shroud door upper cross member 22 via a shroud center stay 23 and a shroud side stay 24 that are spaced apart in the vehicle width direction. It is connected to. In FIG. 4, reference numeral 25 indicates a radiator opening, and reference numeral 26 indicates a headlamp opening. Reference numeral 27 denotes a front side inner panel constituting a side wall of the engine room, and an upper end edge of the apron panel 27 is joined to the apron reinforcement 7. Reference numeral 28 denotes a suspension tower.

  In the vehicle body front structure shown in FIGS. 4 and 5, as shown in FIG. 6, which is a side view seen from the engine room side, the front end portion of the front side frame 5 and the front end portion 10 c of the branch side frame 10 May be connected by a connecting member 30 extending in the vertical direction. The connecting member 30 preferably has a closed cross-sectional structure. However, the connecting member 30 is not limited thereto, and may be, for example, a member having relatively rigidity that is open toward the rear. Moreover, as shown in FIG. 7, you may make it provide the shroud middle cross member 32 which connects the front-end parts 7c and 7c of the left and right apron reinforcements 7 and 7. FIG. The shroud middle cross member 32 is preferably relatively wide. For example, the shroud middle cross member 32 is preferably wider than the height of the front end 5a of the front side frame 5. As a modification, instead of or in addition to the shroud middle cross member 32, the front end portion 7c of the apron reinforcement 7 and the front end portion of the front side frame 5 adjacent thereto are connected by a connecting member extending in the vertical direction. You may do it. Further, the front end portion 10 c of the branch side frame 10 and the front end portion 7 c of the apron reinforcement 7 may be connected by the second connecting member 33. The second connecting member 33 also preferably has a closed cross-sectional structure. However, the second connecting member 33 is not limited to this, and may be, for example, a member having relatively rigidity that is open toward the rear. Further, the front end portion of the front side frame 5 and the shroud middle cross member 32 may be connected by a connecting member 34 (FIG. 7) extending in the vertical direction.

  In addition, the shroud panel 21 of the above embodiment continuously extends in the vehicle width direction between the left and right apron reinforcements 7 and 7, but instead of this, the shroud side panel (see FIG. The front side frame 5, the branch side frame 10, and the apron reinforcement 7 located on the left side are connected to each other, and similarly, the front side frame 5, the branch side frame 10, and the apron reinforcement 7 located on the right side are connected. May be connected.

  Thus, generally, the shroud lower cross member 20 is provided below the side frame 5 on which the bumper reinforcement 16 is provided, so that the collision load of the frontal collision is lower than that of the bumper reinforcement 16. Can be received in cooperation with the shroud lower cross member 20 located in the position. Further, by providing the shroud middle cross member 32 above the side frame 5, the collision load of the frontal collision can be received by the shroud middle cross member 32 positioned slightly higher than the bumper reinforcement 16. .

  Here, it is preferable that the shroud middle cross member 32 and the shroud lower cross member 20 are arranged at overlapping vehicle body front and rear positions when seen in a plan view, and the shroud upper cross member 22 is the cross members 32, 20. It is better to arrange a little behind. Various obstacles O having different heights can be received by the upper, middle, and lower cross members 22, 32, and 20 arranged above and below. In particular, when the shroud middle cross member 32 and the shroud lower cross member 20 are disposed at overlapping vehicle body front and rear positions when viewed in plan, this obstacle in a collision with the obstacle O having a relatively low height. O can be received simultaneously by the shroud middle cross member 32 and the shroud lower cross member 20, and the impact can be absorbed by both the branch side frame 10 and the apron reinforcement 7.

  Further, by connecting the front side frame 5, the branch side frame 10, the front end portion of the apron reinforcement 7, the shroud lower cross member 20, and the shroud middle cross member 32 by the connecting member 30 or the like, the collision load is reduced to the front side frame. 5. There is an advantage that the rigidity of the vehicle body can be improved in addition to the advantage that it can be distributed to the branch side frame 10, the apron reinforcement 7, and the like.

  Further, the longitudinal middle portions of the left and right apron reinforcements 7 are connected by the shroud upper cross member 22, and the shroud upper cross member 22 is connected by the shroud middle cross member 32 and the stays 23, 24. By these elements, a cross-girder-like frame structure is formed on the front surface of the vehicle. Therefore, even if an offset collision and a frontal collision occur at various heights, this is received by the cross-girder-like frame structure, and the apron reinforcement 7 is connected via the shroud upper cross member 22 and the shroud middle cross member 32. The apron reinforcement 7 can absorb the impact.

  FIG. 8 shows a vehicle body front structure according to another embodiment. In FIG. 8, a perimeter frame 35 is disposed below the left and right front side frames 5. The perimeter frame 35 is mounted below the left and right front side frames 5 and 5 via mounting portions 36 as known in Japanese Patent Laid-Open Nos. 2000-159147 and 2004-189136. An engine and a front wheel suspension member are attached to 35.

  The perimeter frame 35 includes a pair of left and right perimeter side members 33a extending along the front side frame 5, and a perimeter front side cross member 35a connecting the front ends of the left and right perimeter side members 35a. 8, the front end of the perimeter side member 35a and the front end 7d of the apron reinforcement 7 adjacent thereto are connected by a connecting member 38. The connecting member 38 is not particularly limited, but has a U-shaped cross section that is open toward the rear, and has a substantially L-shaped outline as a whole, and the perimeter side member 35a. And a front end 7d of the apron reinforcement 7 using a bolt (not shown). In the vehicle body front structure shown in FIG. 8, the aforementioned branch side frame 10 is not provided. However, in the vehicle body front structure shown in FIG. 8, the branch side frame 10 may be provided on the front side frame 5. Good.

  In the various embodiments described above, first, a branch side frame 10 is provided on the front side frame 5, the branch side frame 10 is positioned outward from the front side frame 5, and a front end 10 d of the branch side frame 10 is provided. By positioning the front side frame 5 below the front end 5a, the front side frame 5 and the branch side frame 10 can receive the load of frontal collision or offset collision to absorb the impact. In addition, by providing an apron reinforcement 7 having a shape that hangs downward, even when an offset collision occurs on the outer side of the front side frame 5, the branch side frame 10 and the apron reinforcement 7 are provided. Cooperate with each other to absorb the impact by receiving the impact load. Then, the front end portion 10c of the branch side frame 10 and the front end portion 7c of the apron reinforcement 7 are connected by the connecting member 33 or the shroud drawer panel 21, so that the front end portion 10c of the branch side frame 10 and the apron reinforcement 7 are connected. Since the impact can be received by the connecting member 33 or the shroud drawer panel 21 even in the gap between the front end portion 7c, the region for receiving the impact can be expanded in the width direction and the vertical direction.

  In addition to connecting the front ends 10d of the left and right branch side frames 10 with the shroud lower cross member 20, the front ends 7d of the left and right apron reinforcements 7 are connected with the shroud middle cross member 32, and the apron reinforcement Since the longitudinal middle portion of the ment 7 is connected by the shroud upper cross member 22, the shroud drawer cross member 20, the shroud middle cross member 32, and the shroud upper cross member 22 are arranged on the front surface of the vehicle body in the vehicle width direction. Therefore, the three cross members 20, 32, and 22 can be subjected to a frontal collision impact in a vertically enlarged region. Further, since the shroud middle cross member 32 and the shroud lower cross member 20 are disposed at the front and rear positions of the vehicle body that are overlapped when viewed in a plan view, the middle and low impacts at the time of a frontal collision are simultaneously and reliably received. be able to.

  Further, since the shroud middle cross member 32 and the shroud lower cross member 20 are connected by the shroud drawer panel 21 extending in the vehicle width direction, the shroud middle cross member 32 and the shroud lower cross member 20 positioned above and below are connected. Even if the impact of the frontal collision is input to the gap, the shroud middle panel member 32 and the shroud lower cross member 20 can absorb the impact by receiving it by the shroud panel 21.

  In addition, the shroud middle cross member 32 and the shroud upper cross member 22 located above the shroud middle cross member 22 are connected by a shroud center stay 23 and a shroud side stay 24 that are separated in the vehicle width direction, thereby forming a cross-like frame structure. Therefore, it is needless to say that the impact of the frontal collision can be efficiently received on a wide surface, but the shroud middle cross member 32 and the shroud upper cross member 22, both of which are vehicle body strength members, are mutually connected by the stays 23 and 24. The vehicle body rigidity can be increased.

  Further, the front end portion 7d of the apron reinforcement 7 is positioned higher than the center of the front end 5a of the front side frame 5, and the front end portions of the left and right front side frames 7 are connected by the bumper reinforcement 16. Including the bumper reinforcement 16, it is possible to receive a frontal collision in a wide area up and down without gaps and in an area that is also expanded laterally.

It is a figure for demonstrating the basic composition of the front vehicle body structure of an Example. It is a figure for demonstrating the effect by the basic structure of an Example. It is the side view which looked at the basic composition of Drawing 1 from the engine room side. It is the perspective view seen from the vehicle body diagonal front which shows one form of a preferable Example. It is the top view which looked at the vehicle body front part structure of FIG. 4 from the top. It is the side view which looked at the vehicle body front part structure of FIG. 4 from the engine room side. It is the perspective view which looked at the vehicle body front part structure of the modification from the vehicle body diagonally forward. It is the perspective view seen from the vehicle body diagonal front which shows another preferable Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Engine room 2 Car compartment 3 Bulkhead 5 Front side frame 7 Apron reinforcement 7b Apron hanging part 7d Apron front end 10 Branch side frame 10b Inclined part 10d Front end 16 Bumper reinforcement 20 Shroudro cross member 21 Shroudroor panel 22 Shroud upper Cross member 23 Shroud center stay 24 Shroud side stay 32 Shroud middle cross member 33 Connection member between branch side frame and apron reinforcement

Claims (8)

A pair of left and right front side frames extending forward from the bulkhead;
A pair of left and right branch side frames that branch off in the middle of the front side frame in the longitudinal direction, extend outward and downward in the vehicle width direction, and extend to substantially the same longitudinal position as the front end of the front side frame;
A pair of left and right apron reinforcements positioned on the outer side in the vehicle width direction than the front side frame, to which a front side outer panel is attached;
The apron reinforcement has a shape that extends forward beyond the front wheel and then hangs downward to extend substantially to the front and rear position of the vehicle body substantially the same as the front end of the front side frame,
The front end of the branch side frame is positioned lower than the front end of the apron reinforcement, and the front end of the branch side frame and the front end of the apron reinforcement are connected by a connecting means. Car body front structure.   The vehicle body front part structure according to claim 1, further comprising a lower cross member extending in a vehicle width direction that connects front end parts of the left and right branch side frames. A middle cross member extending in the vehicle width direction connecting the front ends of the left and right apron reinforcements;
The vehicle body front part structure according to claim 1, further comprising an upper cross member extending in a vehicle width direction, which connects intermediate portions in the longitudinal direction of the left and right apron reinforcements.   The vehicle body front structure according to claim 3, wherein the middle cross member and the lower cross member are disposed at overlapping front and rear positions of the vehicle body when viewed in plan.   The vehicle body front part structure according to claim 4, wherein the middle cross member and the lower cross member are connected by a shroud panel extending in a vehicle width direction.   The vehicle body front part structure according to claim 5, wherein a front end of the side frame is connected to the shroud panel.   The middle cross member and the upper cross member positioned above the middle cross member are connected by a plurality of stays arranged at intervals in the vehicle width direction. Car body front structure. The center of the front end of the apron reinforcement is positioned higher than the center of the front end of the front side frame,
The vehicle body front part structure according to any one of claims 1 to 7, wherein the left and right front side frames are connected to each other by a bumper reinforcement extending in a vehicle width direction.

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