JP5954204B2 - Front body structure of the vehicle - Google Patents

Description

  The present invention relates to a front body structure of a vehicle including a pair of left and right front side frames extending in the front-rear direction at a front portion of the vehicle and a sub frame disposed below the front side frame and supporting a suspension.

  Conventionally, a subframe that is provided below a front side frame and supports a suspension is known. In such a sub-frame, as disclosed in Patent Document 1 below, a sub-frame is formed by inserting a cylindrical member into the front portion and inserting a long fastening member (bolt) into the cylindrical member. The lower end and the vehicle body (front side frame) are generally fastened.

JP 2012-25188 A

  However, as described above, in the structure in which the tube member and the fastening member are inserted through the front portion of the subframe and the subframe and the vehicle body are fastened, the tube member having a length corresponding to the vertical distance between the front side frame and the subframe. And a fastening member is needed. For this reason, when the vertical distance between the front side frame and the sub frame is large, there is a problem that the length of the cylindrical member and the fastening member becomes long, resulting in an increase in weight.

  In addition, the subframe generally has a plate-like flange at the front end thereof, and a crush can is attached to the flange to absorb the collision energy and reduce the impact by compressive deformation at the time of frontal collision. However, if the support rigidity of the front part of the subframe is weak, there is a possibility that not only the crash can but also the subframe may be deformed due to insufficient strength when the vehicle receives a light collision from the front.

  Thus, if even the subframe is deformed at the time of a light collision, it is necessary to replace both the crash can and the subframe with new ones, so that the repair cost becomes expensive.

  It is an object of the present invention to provide a vehicle front body structure that can secure support rigidity of a front portion of a subframe while reducing cost and weight.

  The vehicle front body structure of the vehicle according to the present invention includes a pair of left and right front side frames extending in the front-rear direction at the front of the vehicle, and a front frame of the vehicle provided with a subframe disposed below the front side frame and supporting a suspension. A front body support member that is fastened to a lower portion of the front side frame is provided at the left and right front ends of the sub-frame, and the front end support member is a fastening member at a lower portion of the front side frame. A fastening part fastened via the fastening part, a support part having an open cross section extending downward from the fastening part, and a reinforcing part disposed at the front end of the subframe in the vertical direction and continuing from the support part; A crash can that is compressively deformable against a collision load input from the front of the vehicle is attached to the lower portion of the reinforcing portion.

  According to this configuration, the length of the fastening member can be shortened by setting the fastening position by the fastening member to the fastening portion at the upper part of the front end support member, and as a result, the weight can be reduced. .

  By providing the front end support member with a reinforcing portion that also serves as a mounting portion for the crash can, the cost and weight can be reduced by reducing the number of parts, and the resistance to light vehicle collisions, that is, the subframe The support rigidity of the front part can be ensured. For this reason, it is possible to prevent the subframe from being deformed during a light vehicle collision.

In one embodiment of the present invention, the support portion has a U-shaped horizontal cross-section, and the reinforcing portion is provided at the front end of the support portion in the vehicle front-rear direction. .

  According to this configuration, in the front end support member, a surface in the compression direction is formed with respect to the collision load, and ridge lines extending in the vertical direction are formed at both ends thereof. Thus, the support rigidity of a sub-frame can be improved by forming the surface and ridgeline of the said compression direction in a front end support member.

  In one embodiment of the present invention, the rear end of the crash can is located between the front end of the support portion and the front end of the subframe in the vehicle width direction.

  According to this configuration, the collision load can be transmitted between the surfaces in the compression direction. Thereby, the said collision load can be efficiently transmitted not only to the side surface of a sub-frame but to a front end support member and the upper and lower surfaces of a sub-frame.

  In one embodiment of the present invention, the lower portion of the reinforcing portion forms a vertical surface to which the crash can is attached, and the upper portion of the reinforcing portion forms an inclined surface portion that inclines backward toward the front side frame, The inclined surface portion is attenuated in width upward.

  According to this configuration, the load input to the lower portion of the reinforcing portion at the time of a vehicle collision is positively and rearwardly compared to the case where the upper portion of the reinforcing portion forms a vertical surface or tilts forward. It can be transmitted to the front side frame side. For this reason, the amount of load transmission to the front side frame side can be increased, and as a result, the proof stress of the front end support member against a light collision can be improved.

  In one embodiment of the present invention, the sub-frame has an extension part extending forward of the suspension attachment part and forming a closed cross section behind the front end support member, The cross section in the direction orthogonal to the vehicle longitudinal direction at the front end of the extension portion at least partially overlaps the cross section in the direction orthogonal to the vehicle longitudinal direction at the rear end in front view.

  According to this configuration, in a vehicle having a short front nose, collision energy can be absorbed by axial compression of the subframe while suppressing an increase in the weight of the front end support portion (fastening member) due to the straightening of the subframe. .

  Specifically, when the vehicle collides front, the collision energy is generally absorbed by axial compression of the front side frame. However, when the vehicle is a small car, the front nose is short, so the compression stroke at the time of collision is insufficient. , Energy absorption is insufficient.

  According to the above-described configuration, the cross section in the direction orthogonal to the vehicle longitudinal direction at the front end of the extension is at least partially overlapped with the cross section in the direction orthogonal to the vehicle longitudinal direction at the rear end in front view, By making straight, the sub-frame can contribute to axial compression. For this reason, auxiliary collision energy absorption can be performed by the extension portion and the crash can.

  In addition, if the subframe is straightened as described above, the vertical distance between the front side frame and the subframe increases, so there is a concern that the fastening member will be long. However, according to the configuration described above, the front end support The length of the fastening member can be shortened by the member. For this reason, the increase in the weight of the front-end support part (fastening member) by straightening of a sub-frame can be suppressed.

  In one embodiment of the present invention, the front end support member is open downward, and a side surface of the support portion is provided with a hole for confirming attachment work to the front side frame. .

  According to this configuration, by opening the front end support member downward, the fastening member can be inserted and tightened from below the front end support member, whereby the subframe can be attached from below. By providing a hole for confirming the attachment operation on the side surface of the support portion, it is possible to visually confirm the tightening operation of the fastening member, that is, the attachment operation of the front end of the subframe.

  In one embodiment of the present invention, the reinforcing portion is provided with a hole for fixing the harness, and the reinforcing portion has a bent portion bent toward the rear of the vehicle at an end portion close to the hole for fixing the harness. It is what you have.

  According to this configuration, by providing the hole for fixing the harness in the reinforcing portion, it is possible to fix the harness without using a separate bracket, particularly in a vehicle having a short front nose. And since a reinforcement part has the bending part bent to the vehicle rear in the edge part which adjoins the said hole, a harness can be made to contact | abut to a bending part at the time of a vehicle collision. In this case, since the harness can be prevented from coming into contact with a sharp portion such as the edge of the reinforcing portion, the harness can be reliably protected without providing a special protection member.

  According to the present invention, by setting the fastening position by the fastening member to the fastening portion at the upper part of the front end support member, the length of the fastening member can be shortened, and as a result, the weight can be reduced. .

  By providing the front end support member with a reinforcing portion that also serves as a mounting portion for the crash can, the cost and weight can be reduced by reducing the number of parts, and the resistance to light vehicle collisions, that is, the subframe The support rigidity of the front part can be ensured. For this reason, it is possible to prevent the subframe from being deformed during a light vehicle collision.

The side view which shows the front part vehicle body structure of the vehicle which concerns on embodiment of this invention. The top view which shows a sub-frame. The perspective view which shows the front end periphery of a sub-frame. It is a figure which shows a front end supporting member, Comprising: (a) is a perspective view, (b) is a front view, (c) is a side view, (d) is a bottom view. The sectional side view which shows the fastening state of a front-end support member. The horizontal sectional view which shows the attachment state of a front-end support member and a lower side crash can. The perspective view which shows the fixed state of a harness. The side view for demonstrating the state at the time of the light collision of a vehicle.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a side view showing a front vehicle body structure of a vehicle V according to an embodiment of the present invention. The vehicle V according to this embodiment is a small vehicle having a short front nose. Further, as shown in FIG. 1, the vehicle V is connected to a pair of left and right front side frames 1 (only the left side is shown in FIG. 1) and a front end of the front side frame 1 at the front portion thereof. The upper crash can 2, the bumper reinforcement 3 connecting the upper crash can 2 in the vehicle width direction, the subframe 4 disposed below the front side frame 1, and a pair of left and right constituting a part of the suspension Lower arm 5 (only the left side is shown in FIG. 1).

  The front side frame 1 is formed of a cylindrical body having a closed cross-sectional shape extending in the front-rear direction of the vehicle, and the upper crash can 2 is attached to the front end thereof via a flange 6 and a flange 7 on the upper crash can 2 side. It has been.

  The upper crash can 2 is formed of a cylindrical body having a closed cross section extending in the vehicle front-rear direction, and is connected to the front portion of the front side frame 1. Further, as shown in FIG. 5, the bumper reinforcement 3 includes a bumper rain main body 31 having a hat-shaped cross section that is open on the front side of the vehicle, and a closing plate 32 joined to a front portion of the bumper rain main body 31. It is an arc-shaped member having a trapezoidal closed cross section, and connects the front ends of the left and right upper crash cans 2 in the vehicle width direction.

  In addition, a front end of a sub-frame 4 described later is connected to the bottom surface of the front side frame 1 via a front-end support member 8 and a flange 6, and an intermediate portion of the sub-frame 4 in the vehicle front-rear direction is an intermediate support member 9. It is connected through.

  1 and 2, the subframe 4 includes a pair of left and right front and rear members 41, a front cross member 42 that connects the front portions of the front and rear members 41 in the vehicle width direction, and a rear end of the front and rear members 41. A suspension cross member 43 (hereinafter referred to as a suspension cross 43) connected in the width direction is formed in a cross beam shape.

  The front and rear members 41 and the suspension cross 43 are formed in a hollow shape by joining the upper members 41A and 43A constituting the upper surface and the lower members 41B and 43B constituting the lower surface. It is comprised with the cylindrical body of the closed cross-sectional shape extended in the vehicle front-back direction.

  Further, the subframe 4 has an extended portion 44 having a closed cross-sectional shape extending from the subframe main body including the rear portion of the front and rear members 41 and the suspension cross 43 to the front of the vehicle. In the front and rear members 41, a lower arm mounting portion 41a, which will be described later, is formed at the rear portion thereof. It is formed by the front part. In the present embodiment, as shown in FIGS. 1 and 2, the cross section of the front end of the extension portion 44 in the direction orthogonal to the vehicle front-rear direction is the front cross section of the rear end of the extension portion 44 and the direction orthogonal to the vehicle front-rear direction At least partially overlap in vision.

  On the other hand, of the front and rear members 41, the rear portion of the vehicle from the lower arm mounting portion 41a, that is, the rear portion of the front and rear members 41 is inclined obliquely toward the rear of the vehicle and inward in the vehicle width direction as shown in FIG. ing.

  Here, as shown in FIG. 2, the lower arm 5 is formed in a substantially bow shape projecting inward in the vehicle width direction, and a knuckle arm that supports the wheels as shown in FIGS. A ball joint 51 connected to (not shown) is provided, and a support arm 52 projecting inward in the vehicle width direction is extended at the middle portion in the longitudinal direction. And the front part connection part 53 is attached to the front-end | tip of the support arm 52, and this front part connection part 53 is connected and supported so that rocking | fluctuation is possible with respect to the lower arm attachment part 41a.

  Further, in the sub-frame 4, the front ends of the front and rear members 41 are U-shaped in a plan view as shown in FIG. 2, and the concave portion 41b at the intermediate portion in the vehicle width direction is shown in FIGS. The front end support member 8 shown in FIG.

  The front end support member 8 is made of a metal plate, and includes an upper fastening seat portion 81, a support portion 82 having an open cross section extending downward from the fastening seat portion 81, and a vehicle width from the front end of the support portion 82. It has left and right reinforcing portions 83 that continue to the outside in the direction.

  Incidentally, as shown in FIG. 5, an extension 61 extending downward and a mounting seat 62 extending rearward from the extension 61 are integrally formed on the flange 6 at the front end of the front side frame 1. On the upper surface of the seat 62, a nut 20 constituting a fastening member is fixed by welding.

  The fastening seat portion 81 is disposed substantially horizontally, and an insertion hole 81a is formed in the center portion thereof. And the bolt 21 which comprises a fastening member with the nut 20 is penetrated by the penetration hole 81a as shown in FIG. 3, FIG. In the present embodiment, the fastening seat 81 is fastened to the front side frame via the flange 6 by tightening the bolt 21 to the nut 20 with the upper surface of the fastening seat 81 being in contact with the lower surface of the mounting seat 62. 1 is attached to the bottom surface.

  Further, in the front end support member 8, the support portion 82 is constituted by side portions 82a, 82a and a rear surface portion 82b that block the three sides of the vehicle width direction and the rear portion, and these side surface portions 82a, 82a and the rear surface portion 82b. Is joined to the concave portion 41 b at the front end of the sub-frame 4.

  Further, the support portion 82 has a U-shaped horizontal cross-section formed by the side portions 82a and 82a and the rear surface portion 82b, thereby forming the open cross-section with the front open.

  In the present embodiment, the fastening seat portion 81 is attached to the bottom surface of the front side frame 1 via the flange 6, and the support portion 82 is joined and fixed to the front end of the subframe 4. The front end support member 8 is connected to the bottom surface of the front side frame 1. In this attached state, the front end of the subframe 4 is supported by the support portion 82 in a suspended state from above.

  Further, the front end support member 8 is opened downward as shown in FIGS. As a result, the bolt 21 can be inserted from below the front end support member 8 and fastened to the nut 20, whereby the front end of the subframe 4 can be attached from below.

  Further, work confirmation holes 82c are formed in the side surface parts 82a and 82a and the rear surface part 82b, and the front end of the subframe 4 can be confirmed by visually confirming the tightening work of the bolts 21 through the work confirmation holes 82c. It is possible to visually confirm the mounting work. In addition, holes 82d for weight reduction are formed in the side surface portions 82a and 82a and the rear surface portion 82b below the work confirmation hole 82c.

  A bracket 22 is joined and fixed between the extension 61 and the mounting seat 62 of the flange 6 and the front side frame 1, and the bracket 22 is used to improve the support rigidity of the front end of the sub-frame 4. Yes.

  Further, in the front end support member 8, the reinforcing portion 83 is disposed at the front end of the subframe 4 in the vertical direction (specifically, the front end on both sides in the vehicle width direction of the recess 41 b), and the lower crash can 23 is A plate-like flange 24 is attached to the lower part of the reinforcing portion 83.

  The lower crush can 23 is formed in a square frustum shape by an upper member 23 </ b> A constituting the upper surface and a lower member 23 </ b> B constituting the lower surface, and the rear ends thereof are joined and fixed to the flanges 24, respectively. And the lower crush can 23 is attached to the lower part of the reinforcement part 83 via the flange 24 because the flange 24 is fastened by the two fastening members 25 and 25 to the front surface of the reinforcement part 83. FIG. Thereby, it is possible to compressively deform against a collision load input from the front of the vehicle.

  In this way, in a state where the lower crash can 23 is attached to the lower portion of the reinforcing portion 83 via the flange 24, the rear end of the lower crash can 23 is supported in the vehicle width direction as shown in FIG. It is located between the front end of the part 82 and the front end of the subframe 4 (front and rear members 41).

  Here, as shown in FIG. 4, the lower portion of the reinforcing portion 83 forms a vertical surface for attaching the lower crash can 23, while the upper portion includes an inclined surface portion 83 a that is inclined backward toward the front side frame 1. ing. And in the lower part of the reinforcement part 83, while corresponding to the position of the fastening members 25 and 25, the insertion holes 83b and 83b for inserting these are drilled, On the upper inclined surface part 83a, it faces upwards. The width is formed to be attenuated.

  Although not shown in FIGS. 1 to 6 for the sake of convenience, a power transmission harness 26 as shown in FIG. 7 is routed in front of the front end support member 8 in the vehicle. The harness 26 constitutes a part of a so-called deceleration regeneration system in which electric power generated by a generator (not shown) during deceleration of the vehicle V is charged by a secondary battery (not shown). The secondary battery is electrically connected by the harness 26. However, in the present invention, the harness 26 is not necessarily limited to being a harness for a deceleration regeneration system.

  The clip 27 is attached to the reinforcing portion 83, and the harness 26 described above is fixed at a predetermined position by being inserted into the annular fixing portion 27a of the clip 27.

  In the reinforcing portion 83, as shown in FIG. 4, a clip attachment hole 83c as a hole for fixing the harness 26 is formed corresponding to the attachment position of the clip 27, and the base portion 27b of the clip 27 is formed in the clip attachment hole 83c. Is inserted.

  Further, in the reinforcing portion 83, as shown in FIGS. 4 and 7, a protruding piece 83d protruding outward is formed at an adjacent end portion of the clip mounting hole 83c, and the protruding piece 83d is provided with this. A bent portion 83e that is bent rearward of the vehicle is formed. As shown in FIG. 7, the bent portion 83 e is disposed at the rear of the vehicle at substantially the same height as the harness 26.

  In the present embodiment, as described above, by setting the fastening position by the bolt 21 to the fastening seat portion 81 at the top of the front end support member 8, the length of the bolt 21 can be shortened. Weight reduction can be achieved.

  Further, by providing the front end support member 8 with the reinforcing portion 83 that also serves as the attachment portion of the lower crash can 23, it is possible to reduce the cost and weight by reducing the number of parts and to withstand light collision of the vehicle V. That is, the supporting rigidity of the front portion of the subframe 4 can be ensured. For this reason, it can suppress that the sub-frame 4 deform | transforms as shown by the dashed-two dotted line in FIG.

  In addition, the horizontal cross-sectional shape of the support portion 82 is formed in a U-shape, and the reinforcing portion 83 is provided at the front end of the support portion 82 in the vehicle front-rear direction. Surfaces in the compression direction are formed, and ridgelines extending in the vertical direction are formed at both ends thereof. Thus, in the front end support member 8, the support rigidity of the sub-frame 4 can be improved by forming the surface and ridgeline in the compression direction.

  Further, since the rear end of the lower crash can 23 is located between the front end of the support portion 82 and the front end of the subframe 4 (front and rear members 41) in the vehicle width direction, the collision load from the front of the vehicle is reduced. It can be transmitted between the surfaces in the compression direction. Thereby, the collision load can be efficiently transmitted not only to the side surface of the subframe 4 but also to the front end support member 8 and the upper and lower surfaces of the subframe 4.

  Further, the lower part of the reinforcing part 83 forms a vertical surface to which the lower crash can 23 is attached, while the upper part of the reinforcing part 83 forms an inclined surface part 83a inclined rearward toward the front side frame 1, and the inclined surface part 83a Compared with the case where the upper part of the reinforcing part 83 forms a vertical surface or tilts forward because the width is attenuated upward, it is input to the lower part of the reinforcing part 83 when the vehicle V collides. As shown by a thick arrow α in FIG. 8, the load can be positively transmitted to the rear side and the upper front side frame 1 side. For this reason, the load transmission amount to the front side frame 1 side can be increased, and as a result, the proof stress of the front end support member 8 against a light collision can be improved.

  Further, at the rear of the front end support member 8, the sub-frame 4 extends forward from the attachment portion of the lower arm 5 and has an extension portion 44 that forms a closed cross section. The cross section in the direction orthogonal to the direction at least partially overlaps the cross section in the direction orthogonal to the vehicle longitudinal direction at the rear end in a front view, so that the subframe 4 is straightened in the vehicle V with a short front nose. The collision energy can be absorbed by the axial compression of the sub-frame 4 while suppressing an increase in the weight of the front end support portion (bolt 21) due to.

  Specifically, when the vehicle V collides with the front, the collision energy is generally absorbed by the axial compression of the front side frame 1. However, when the vehicle V is a small vehicle as described above, the front nose is short. The compression stroke is insufficient and the amount of energy absorption is insufficient.

  In the present embodiment, as described above, the cross section in the direction orthogonal to the vehicle longitudinal direction at the front end of the extension 44 is at least partially overlapped with the cross section in the direction orthogonal to the vehicle longitudinal direction at the rear end in front view. By making the subframe 4 straight, the subframe 4 can contribute to axial compression. For this reason, auxiliary collision energy absorption can be performed by the extension 44 and the lower crush can 23.

  Further, when the subframe 4 is straightened as described above, the vertical distance between the front side frame 1 and the subframe 4 increases, so there is a concern that the bolt 21 may be long. The length of the bolt 21 can be shortened by the support member 8. For this reason, an increase in the weight of the front end support portion (bolt 21) due to the straightening of the subframe 4 can be suppressed.

  Further, by opening the front end support member 8 downward, the bolts 21 can be inserted and tightened from below the front end support member 8, whereby the subframe 4 can be attached from below. Then, by providing work confirmation holes 82c on the side surfaces (side surfaces 82a, 82a, rear surface 82b) of the support portion 83, the bolt 21 can be tightened, that is, the front end of the subframe 4 can be attached. It can be visually confirmed from the hole 82c.

  Further, by providing the reinforcing portion 83 with the clip attachment hole 83c as the hole for fixing the harness 26, the harness 26 can be fixed without using a separate bracket, particularly in the vehicle V with a short front nose. it can. And the reinforcement part 83 has the bending part 83e bent to the vehicle rear in the edge part close | similar to the clip attachment hole 83c, When the vehicle V collides, the harness 26 can be made to contact | abut to the bending part 83e. . In this case, since the harness 26 can be prevented from coming into contact with a sharp portion such as the edge 83f (see FIG. 7) of the reinforcing portion 8, the harness 26 can be reliably protected without providing a special protection member. Can do.

  By the way, in embodiment mentioned above, while forming the open cross section by which the front was open | released in the support part 82, while forming the reinforcement part 83 from the front end of the support part 82 to the vehicle width direction outer side, The present invention is not necessarily limited to this. For example, you may form the open cross section by which the back was open | released in the support part, and may form a reinforcement part so that it may continue in a vehicle width direction outer side from the rear end of a support part. In this case, at the front end of the sub-frame (front and rear members), the intermediate portion in the vehicle width direction forms a convex portion protruding toward the front of the vehicle.

  In the above-described embodiment, the case where the present invention is applied to a small vehicle having a short front nose has been described. However, the present invention is not necessarily limited thereto, and the present invention may be applied to other vehicle types. In the above-described embodiment, the subframe 4 having a cross-girder-like structure is employed. However, the subframe 4 is not necessarily limited to this, and may be a substantially H-shaped subframe, for example. .

In correspondence between the configuration of the present invention and the above-described embodiment,
The suspension of the present invention corresponds to the lower arm 5,
Similarly,
The fastening member corresponds to the nut 20 and the bolt 21,
The fastening portion corresponds to the fastening seat portion 81,
The crash can corresponds to the lower crash can 23,
The attachment portion corresponds to the lower arm attachment portion 41a,
The hole for confirming the mounting operation corresponds to the hole 82c for confirming the operation,
The hole for fixing the harness corresponds to the clip mounting hole 83c,
The present invention is not limited only to the configuration of the above-described embodiment, and many embodiments can be obtained.

DESCRIPTION OF SYMBOLS 1 ... Front side frame 4 ... Sub frame 5 ... Lower arm 8 ... Front end support member 20 ... Nut 21 ... Bolt 23 ... Lower crush can 41a ... Lower arm attachment part 44 ... Extension part 81 ... Fastening seat part 82 ... Support part 83 ... Reinforcement Portion 83a ... Inclined surface portion 82c ... Work confirmation hole 83c ... Clip mounting hole

Claims (7)

A pair of left and right front side frames extending in the front-rear direction at the front of the vehicle;
A vehicle front body structure including a sub-frame disposed below the front side frame and supporting a suspension;
Front left and right front ends of the subframe are provided with front end support members that are fastened to the lower part of the front side frame,
The front end support member includes a fastening portion fastened to a lower portion of the front side frame via a fastening member;
A support portion having an open cross section extending downward from the fastening portion;
A reinforcing portion that is disposed at the front end of the subframe in the vertical direction and that is continuous from the support portion;
A vehicle front body structure in which a crash can that is compressively deformable against a collision load input from the front of the vehicle is attached to a lower portion of the reinforcing portion. The support part has a U-shaped horizontal cross-sectional shape,
The vehicle front body structure according to claim 1, wherein the reinforcing portion is provided at a front end of the support portion in a vehicle longitudinal direction. The vehicle front body structure according to claim 1 or 2, wherein a rear end of the crash can is positioned between a front end of the support portion and a front end of the subframe in a vehicle width direction. The lower part of the reinforcing part forms a vertical surface to which the crash can is attached,
The upper part of the reinforcing part forms an inclined surface part inclined backward toward the front side frame,
The front body structure of a vehicle according to any one of claims 1 to 3, wherein a width of the inclined surface portion is attenuated upward. The sub-frame has an extension part that forms a closed cross section and extends forward from the attachment part of the suspension behind the front end support member,
The cross section in the direction orthogonal to the vehicle longitudinal direction at the front end of the extension portion overlaps at least partially in a front view with the cross section in the direction orthogonal to the vehicle longitudinal direction at the rear end. The front body structure of the vehicle according to the item. The front end support member is opened downward,
The vehicle front body structure according to any one of claims 1 to 5, wherein a hole for confirming an attachment operation to the front side frame is provided on a side surface of the support portion. The reinforcing part is provided with a hole for fixing the harness,
The vehicle front body structure according to any one of claims 1 to 6, wherein the reinforcing portion has a bent portion that is bent rearward of the vehicle at an end portion close to the hole for fixing the harness.

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