JP7530860B2 - Front body structure - Google Patents

Description

The present invention relates to a front body structure for a vehicle, such as an automobile.

For example, Patent Document 1 discloses a technical idea that when a frontal collision load is input, the drive unit slides down to the floor below along a partition consisting of an inclined surface that slopes downward toward the rear of the vehicle, thereby protecting the occupants.

Patent No. 2855411

In vehicles with a transversely mounted engine in the engine compartment at the front of the vehicle, the middle parts of the left and right front side frames each have a bent portion that extends outward in the vehicle width direction compared to other parts.

When the horizontally mounted engine is pushed backward by the force of a frontal collision load, the rear end of the horizontally mounted engine gets caught in the bent parts of the left and right front side frames, making it difficult to ensure the desired crash stroke.

The present invention was made in consideration of the above points, and aims to provide a vehicle front body structure that can prevent the engine, which displaces toward the rear of the vehicle, from getting caught in the bent parts of each front side frame when a collision load is input.

In order to achieve the above object, the present invention provides a vehicle suspension comprising a front side frame extending in a vehicle longitudinal direction, and a power unit arranged on the inside of the front side frame in a vehicle width direction, wherein a slider surface is formed on a vehicle rear end side of a side surface of the power unit facing the front side frame, the slider surface being inclined so as to become more inward in the vehicle width direction as it approaches the rear of the vehicle, the front side frame has a bent portion bent so as to be positioned more outward in the vehicle width direction as it approaches the front of the vehicle in a bottom view, and a slope is formed on the inside of the bent portion in the vehicle width direction, the slope being inclined so as to become more inward in the vehicle width direction as it approaches the rear of the vehicle, the slider surface and the slope are arranged so as to overlap at least partially in the vehicle longitudinal direction as viewed from the vehicle width direction , A subframe is arranged below the front side frame, and a floor skeleton mechanism that is connected to the front side frame and has an L-shaped shape when viewed from the bottom is arranged at the rear of the slope, and the subframe has a front fastening portion having a first convex portion, a steering gear box element having a second convex portion, and a rear fastening portion having a third convex portion, and the front side frame and the floor skeleton mechanism have a first slide portion, a second slide portion and a third slide portion corresponding to the first convex portion, the second convex portion and the third convex portion, respectively, and when a frontal collision load is input, the first convex portion, the second convex portion and the third convex portion slide down continuously relative to the first slide portion, the second slide portion and the third slide portion .
The present invention also provides a vehicle suspension system including a front side frame extending in a vehicle longitudinal direction, and a power unit arranged on the inside of the front side frame in a vehicle width direction, the power unit having a slider surface formed on a vehicle rear end side of a side surface facing the front side frame, the slider surface inclining so as to become more inward in the vehicle width direction toward the rear of the vehicle, the front side frame having a bent portion bent so as to become more outward in the vehicle width direction toward the front of the vehicle in a bottom view, and a slope on the inside of the bent portion in the vehicle width direction that inclined so as to become more inward in the vehicle width direction toward the rear of the vehicle, the slider surface and the slope being arranged so as to overlap at least partially in the vehicle longitudinal direction when viewed from the vehicle width direction, and the vehicle rear of the front side frame has A first reinforcing plate having an L-shaped or C-shaped cross section perpendicular to the axis is arranged along the longitudinal direction, overlapping the inner ridge line of the front side frame, a second reinforcing plate is provided at the front of the vehicle of the front side frame, which is offset outward in the vehicle width direction as it approaches the front of the vehicle, the first reinforcing plate and the second reinforcing plate are aligned along the fore-and-aft direction of the vehicle, the front side frame is composed of a main body portion having an approximately U-shaped cross section and an opening on the outside in the vehicle width direction, and a back plate which covers the opening of the main body portion and forms a hollow body extending in the fore-and-aft direction of the vehicle, the second reinforcing plate inclines outward in the vehicle width direction from the inner wall of the main body portion toward the front of the vehicle, and forms a closed cross section between the back plate, and the closed cross section is continuous with the hollow body.
Further, the present invention provides a vehicle suspension comprising a front side frame extending in a front-rear direction of a vehicle, and a power unit arranged on the inside of the front side frame in a vehicle width direction, wherein a slider surface is formed on the vehicle rear end side of a side surface of the power unit facing the front side frame, the slider surface being inclined so as to become more inward in the vehicle width direction toward the rear of the vehicle, and the front side frame has a bent portion bent so as to be positioned more outward in the vehicle width direction toward the front of the vehicle in a bottom view, and a slope is formed on the inside of the bent portion in the vehicle width direction, the slope being more inward in the vehicle width direction toward the rear of the vehicle, and The front side frame has a first reinforcing plate having an L-shaped or U-shaped cross section perpendicular to the axis and is provided at the rear of the vehicle of the front side frame along the longitudinal direction, overlapping with the inner ridge line of the front side frame, and a second reinforcing plate is provided at the front of the vehicle of the front side frame, the second reinforcing plate being offset outward in the vehicle width direction as it approaches the front of the vehicle, the first reinforcing plate and the second reinforcing plate are aligned along the vehicle longitudinal direction, and the second reinforcing plate is aligned with a wall surface of the bumper beam extension in the vehicle longitudinal direction.

The present invention provides a front body structure that can prevent the engine, which displaces toward the rear of the vehicle, from getting caught in the bent parts of the front side frames when a collision load is applied.

1 is a bottom view of a front vehicle body of a vehicle to which a vehicle body front structure according to an embodiment of the present invention is applied, viewed from below the vehicle body. 2 is a perspective view showing a slope provided on an inner side in the vehicle width direction of a bent portion of the front side frame shown in FIG. 1 . FIG. 4 is a cross-sectional view showing an inclined surface provided on the dashboard lower section. FIG. 4 is an enlarged bottom view showing a floor framework mechanism connected to the front side frame. FIG. 2 is a perspective view of the dashboard as seen from inside the vehicle compartment. 11 is a side view showing a state in which the tip of the front side frame and the tip of the lower member are connected to each other. FIG. FIG. 6B is a cross-sectional view taken along line VI-VI in FIG. 6A. 4 is a side view showing a first reinforcing plate and a second reinforcing plate provided on the front side frame. FIG. 4 is a cross-sectional view of a front end portion of a front side frame. FIG. 1 is a partially cutaway perspective view showing a state in which a front end portion of a front side frame and a front end portion of an upper member are connected by a bumper beam extension. FIG. 10 is a perspective view showing a state in which the bumper beam extension has been removed from the state shown in FIG. 9 . FIG. 2 is a partial hypothetical side view showing a subframe provided below the front side frame of the vehicle. 12 is a bottom view showing the first convex portion and the second convex portion shown in FIG. 11 . 11 is a bottom view showing a state in which a collision load is input from the front of the vehicle and the power unit retreats toward the rear of the vehicle. FIG.

Next, an embodiment of the present invention will be described in detail with reference to the drawings as appropriate. In each drawing, "front and rear" refers to the front and rear direction of the vehicle, "left and right" refers to the width direction of the vehicle (left and right direction), and "up and down" refers to the up and down direction of the vehicle (vertical up and down direction).

As shown in FIG. 1, the front body 10 of a vehicle to which the front body structure according to an embodiment of the present invention is applied includes a pair of left and right front side frames 12 extending in the longitudinal direction of the vehicle on both the left and right sides along the vehicle width direction, a pair of left and right upper members 14 disposed on the outer sides of each front side frame 12 in the vehicle width direction and extending in the longitudinal direction of the vehicle on the upper side, and a lower member 16 branching downward at the vehicle front end of each upper member 14.

Furthermore, the front body 10 is configured with a damper housing 18 that is suspended between the front side frame 12 and the upper member 14, and a damper base 20 that is fixed to the upper end of the damper housing 18.

As shown in FIG. 1, a dashboard 24 is provided behind each damper housing 18, separating the engine room 22 from the passenger compartment. As shown in FIG. 5, the dashboard 24 is configured with a main body 26, a dashboard lower 28 provided below the main body 26, and a pair of left and right dashboard crosses 30 that are disposed on the inside of the passenger compartment of the dashboard lower 28 and extend along the vehicle width direction. The dashboard lower 28 faces the engine room 22 and has an inclined surface 32 that slopes downward from the front of the vehicle to the rear of the vehicle (see FIG. 3).

As shown in FIG. 1, the engine room 22 includes a power unit 34 in which the engine and transmission are integrated into one unit and arranged side by side in the vehicle width direction. A slider surface 36 is provided at the rear end of one side of the power unit 34. When viewed from the bottom, the slider surface 36 is configured as an inclined surface that slopes from the outer side in the vehicle width direction to the inner side in the vehicle width direction as it moves from the front of the vehicle to the rear of the vehicle.

In other words, a slider surface 36 is formed on the vehicle rear end side of the side of the engine or transmission that constitutes the power unit 34 that faces the front side frame 12, and is inclined inward in the vehicle width direction as it approaches the rear of the vehicle.

In this embodiment, the slider surface 36 is provided only on one side of the rear end of the power unit 34 in the vehicle width direction, but the slider surface 36 may also be provided on the other side in the vehicle width direction. Also, in this embodiment, a transversely mounted engine is used as the engine, but this is not limited to this and a vertically mounted engine may also be used.

As shown in FIG. 6B, the front side frame 12 is composed of a frame main body portion (main body portion) 40 having an opening 38 that opens outward in the vehicle width direction and an axial cross section that is substantially U-shaped, and a back plate 44 that closes the opening 38 of the frame main body portion 40 and forms a hollow body 42 that extends in the vehicle front-rear direction. The frame main body portion 40 is provided with an upper flange portion 46a and a lower flange portion 46b, and is joined to the back plate 44 via the upper flange portion 46a and the lower flange portion 46b.

As shown in FIG. 8, the tip side of the frame body 40 has an upper wall 48a provided on the ceiling surface, an inner wall 48b that bends downward from the upper wall 48a and is provided on the inside in the vehicle width direction, and an inclined wall 48c that is continuous with the lower end of the inner wall 48b. The back plate 44 connects the upper wall 48a and the inclined wall 48c of the frame body 40 to form the hollow body 42.

As shown in FIG. 1, the front end of the front side frame 12 is provided with a bent portion 50 that bends so that it spreads outward in the vehicle width direction (toward the lower member 16) as it moves toward the front. The lower member 16 also bends so that it moves closer to the inside in the vehicle width direction (toward the front side frame 12) as it moves toward the front.

As shown in FIG. 2, a slope 52 is provided on the inside of the bent portion 50 of each front side frame 12 in the vehicle width direction. In a side view, this slope 52 is inclined from the outside in the vehicle width direction to the inside in the vehicle width direction as it moves from the front of the vehicle to the rear of the vehicle. The slider surface 36 of the power unit 34 and the slope 52 of the front side frame 12 are arranged so that at least a portion of them overlap along the front-rear direction of the vehicle when viewed in the vehicle width direction (see FIG. 1).

As shown in FIG. 1, a floor framework mechanism 54 is disposed behind the slope 52, which is L-shaped in bottom view and connected to the front side frame 12. As shown in FIG. 4, the floor framework mechanism 54 is composed of a cross member 56 extending along the vehicle width direction and a tunnel side frame 58 that has a hat-shaped cross section perpendicular to the axis and extends toward the rear of the vehicle. The outer end of the cross member 56 in the vehicle width direction is connected to the front end of the rear end 60 of the front side frame 12. The inner end of the cross member 56 in the vehicle width direction is connected to the front end of the tunnel side frame 58.

This floor framework mechanism 54 is disposed on the inclined surface 32 (see FIG. 3) of the dashboard lower 28 facing the engine room 22. The floor framework mechanism 54 is also continuously fixed (glued) to the inclined surface 32 of the dashboard lower 28 together with the front side frame 12. For example, in FIG. 4, the "x" marks indicate joints made by spot welding, and the dotted areas indicate joints made by adhesive.

As shown in FIG. 7, a first reinforcing plate 62 having an L-shaped cross section perpendicular to the axis is provided at the rear of the front side frame 12 along the longitudinal direction, overlapping the inner lower edge of the front side frame 12. A second reinforcing plate 64 is provided at the front of the front side frame 12, offset outward in the vehicle width direction as it approaches the front end. The front end 62a of the first reinforcing plate 62 and the rear end 64a of the second reinforcing plate 64 are aligned in the fore-and-aft direction of the vehicle.

That is, as shown in FIG. 7, the rear end 64a of the second reinforcing plate 64 arranged at the front of the vehicle and the front end 62a of the first reinforcing plate 62 arranged at the rear of the vehicle are arranged side by side in abutting contact along the vehicle longitudinal direction. Note that in this embodiment, the first reinforcing plate 62 has an L-shaped cross section perpendicular to the axis, but is not limited to this. For example, a first reinforcing plate (not shown) having a U-shaped cross section perpendicular to the axis may be used.

As shown in FIG. 8, the second reinforcing plate 64 is inclined outward in the vehicle width direction from the inner wall of the frame main body 40 of the front side frame 12 toward the front of the vehicle, and forms a closed cross section 66 between the frame main body 40 and the back plate 44. The space including this closed cross section 66 is continuous (communicates) with the hollow body 42 on the rear side of the vehicle, which is formed by the frame main body 40 and the back plate 44.

As shown in Figures 9 and 10, the front end of the second reinforcing plate 64 is aligned in the vehicle front-rear direction with a wall surface 70 of a bumper beam extension 68 provided at the front end of the front side frame 12. As shown in Figure 9, the wall surface 70 is configured to divide the cylindrical interior of the bumper beam extension 68 into left and right sides. Furthermore, the material or cross-sectional shape of the first reinforcing plate 62 can be changed according to the vehicle weight.

As shown in FIG. 11, a subframe 72 is disposed below each front side frame 12. This subframe 72 is, for example, lattice-shaped when viewed from the bottom, and is configured with a pair of left and right vertical frames extending along the fore-and-aft direction of the vehicle, and a pair of horizontal frames extending along the vehicle width direction and connecting the pair of left and right vertical frames.

The subframe 72 is attached to each front side frame 12 by a front fastening portion 74 and a rear fastening portion 76, which are arranged in the fore-aft direction of the vehicle.

The subframe 72 is provided with a front fastening portion 74 having a first protrusion 78a, a steering gear box element 80 having a second protrusion 78b, and a rear fastening portion 76 having a third protrusion 78c. The front side frame 12 and the floor framework 54 also have a first slide portion 82a, a second slide portion 82b, and a third slide portion 82c against which the first protrusion 78a, the second protrusion 78b, and the third protrusion 78c come into contact when a frontal collision load is input, guiding the subframe 72 downwardly of the vehicle (see FIG. 11).

As shown in FIG. 11, the first slide section 82a, the second slide section 82b, and the third slide section 82c are located rearward of the first convex section 78a, the second convex section 78b, and the third convex section 78c, respectively, and are configured with an inclined surface that slopes downward from the top of the vehicle to the bottom of the vehicle as it moves from the front of the vehicle to the rear of the vehicle. This inclined surface has the function of guiding the subframe 72 toward the bottom of the vehicle when a frontal collision load is input.

The front body 10 of a vehicle to which the front body structure of this embodiment is applied is basically configured as described above, and its effects will be explained next.

In this embodiment, a slider surface 36 is formed on the vehicle rear end side of the side of the power unit 34 facing the front side frame 12, which is inclined so that it is positioned inward in the vehicle width direction toward the rear of the vehicle. The front side frame 12 has a bent portion 50 that is bent so that it is positioned outward in the vehicle width direction toward the front of the vehicle in a bottom view. On the inner side of the bent portion 50 in the vehicle width direction, there is a slope 52 that is inclined so that it is positioned inward in the vehicle width direction toward the rear of the vehicle. The slider surface 36 and the slope 52 are arranged so that at least a portion of them overlap in the vehicle front-rear direction when viewed from the vehicle width direction.

In this embodiment, when a collision load F is input from the front of the vehicle and the power unit 34 retreats toward the rear of the vehicle, the slider surface 36 slides on the inward slope 52 in the vehicle width direction of the bent portion 50 of the front side frame 12, allowing the power unit 34 to retreat further toward the rear of the vehicle (see FIG. 13). As a result, in this embodiment, the power unit 34 is prevented from getting caught on the bent portion 50 of the front side frame 12, and the crash stroke at which the front side frame 12 deforms can be increased.

In addition, in this embodiment, a floor framework mechanism 54 that is connected to the front side frame 12 and has an L-shape when viewed from the bottom is disposed at the rear of the slope 52. In this embodiment, this floor framework mechanism 54 prevents the power unit 34 from moving backward when a collision load F is input, and can effectively prevent the power unit 34 from entering the vehicle interior.

Furthermore, in this embodiment, the floor framework mechanism 54 is disposed on the inclined surface 32 on the engine room 22 side of the dashboard lower 28. As a result, in this embodiment, the inclined surface 32 of the dashboard lower 28 prevents the power unit 34 from moving backward when a collision load F is input, and the power unit 34 can be suitably prevented from entering the vehicle interior.

Furthermore, in this embodiment, the floor framework mechanism 54 is continuously fixed to the inclined surface 32 of the dashboard lower 28 together with the front side frame 12. This strengthens the connection between the floor framework mechanism 54 and the dashboard 24, and reliably prevents the power unit 34 from moving backward.

Furthermore, in this embodiment, a dashboard cloth 30 is arranged along the vehicle width direction on the interior side of the inclined surface 32 of the dashboard lower 28. In this embodiment, the dashboard cloth 30 reinforces the rigidity and strength of the dashboard 24, improving the frontal collision performance when a collision load is input from the front of the vehicle.

Furthermore, in this embodiment, a subframe 72 is disposed below the front side frame 12. This subframe 72 is configured with a front fastening portion 74 having a first convex portion 78a, a steering gear box element 80 having a second convex portion 78b, and a rear fastening portion 76 having a third convex portion 78c. The front side frame 12 and the floor framework mechanism 54 have a first slide portion 82a, a second slide portion 82b, and a third slide portion 82c that correspond to the first slide portion 78a, the second slide portion 78b, and the third slide portion 78c, respectively.

When a frontal collision load (flat collision load) is input, the subframe 72 is pressed by the retracting power unit 34, the front fastening portion 74 and the rear fastening portion 76 are separated from the vehicle body, and the first convex portion 78a, the second convex portion 78b, and the third convex portion 78c slide down sequentially or continuously by the first slide portion 82a, the second slide portion 82b, and the third slide portion 82c, so that the entire subframe 72 slides down toward the floor. In particular, even if there is a complex uneven shape, any of the convex portions slide down any of the slide portions as the subframe 72 slides down, so that the subframe 72 can slide down continuously throughout the entire process of the frontal collision.

Furthermore, in this embodiment, a first reinforcing plate 62 having an L-shaped cross section perpendicular to the axis is provided at the rear of the front side frame 12 along the longitudinal direction, overlapping the inner lower edge of the front side frame 12. A second reinforcing plate 64 is provided at the front of the front side frame 12, which is offset outward in the vehicle width direction as it moves toward the front of the vehicle. The first reinforcing plate 62 and the second reinforcing plate 64 are aligned in the fore-and-aft direction of the vehicle.

In this embodiment, the minute overlap collision load is transmitted from the second reinforcing plate 64 to the first reinforcing plate 62. As a result, in this embodiment, the front side frame 12 deforms together with the first reinforcing plate 62, and the minute overlap collision load can be absorbed.

Furthermore, in this embodiment, the front side frame 12 is composed of a frame main body 40 with a generally U-shaped cross section having an opening 38 on the outer side in the vehicle width direction, and a back plate 44 that closes the opening 38 of the frame main body 40 and forms a hollow body 42 extending in the vehicle front-rear direction. The second reinforcing plate 64 is inclined outward in the vehicle width direction from the inner wall of the frame main body 40 toward the front of the vehicle, and forms a closed cross section 66 between it and the back plate 44. The space surrounded by this closed cross section 66 is continuous (communicates) with the hollow body 42 at the rear of the front side frame 12.

As a result, in this embodiment, the minute lap collision load is transmitted from the closed cross section 66 at the front of the front side frame 12 to the hollow body 42 at the rear, promoting deformation of the rear of the front side frame 12.

Furthermore, in this embodiment, the front end of the second reinforcing plate 64 is aligned in the fore-and-aft direction of the vehicle with the wall surface 70 of the bumper beam extension 68 provided at the front end of the front side frame 12.

As a result, when a small overlap collision load is input, the small overlap collision load is transmitted from the wall surface 70 of the bumper beam extension 68 through the second reinforcing plate 64 to the frame body portion 40 of the front side frame 12. As a result, in this embodiment, deformation of the ridges (upper ridge and lower ridge) of the front side frame 12 can be promoted.

Furthermore, in this embodiment, the material or cross-sectional shape of the first reinforcing plate 62 can be changed in accordance with the vehicle weight. Since the first reinforcing plate 62 can change the strength of the front side frame 12 while maintaining the same plate thickness, the same front side frame 12 can be applied to different vehicle models without changing other connecting parts such as bulkheads (not shown).

REFERENCE SIGNS LIST 10 Vehicle body front portion 12 Front side frame 28 Dashboard lower portion 30 Dashboard cross portion 32 Inclined surface 34 Power unit 36 Slider surface 38 Opening 40 Frame main body portion (main body portion)
Description of the Reference Signs 42 Hollow body 44 Back plate 48a Upper wall 48b Inner wall 48c Inclined wall 50 Bent portion 52 Slope 54 Floor framework mechanism 62 First reinforcing plate 64 Second reinforcing plate 66 Closed cross section 68 Bumper beam extension 70 Wall surface 72 Subframe 74 Front fastening portion 76 Rear fastening portion 78a First convex portion 78b Second convex portion 78c Third convex portion 80 Steering gear box element 82a First slide portion 82b Second slide portion 82c Third slide portion F Collision load

Claims (3)

A front side frame extending in the front-rear direction of the vehicle;
a power unit disposed on an inner side of the front side frame in a vehicle width direction,
A slider surface is formed on a vehicle rear end side of a side surface of the power unit facing the front side frame, the slider surface being inclined so as to be inward in a vehicle width direction toward the rear of the vehicle,
the front side frame has a bent portion that is bent so as to be positioned outward in a vehicle width direction toward the front of the vehicle in a bottom view,
a slope on an inner side in the vehicle width direction of the bent portion, the slope being inclined so as to be inward in the vehicle width direction toward the rear of the vehicle;
The slider surface and the inclined surface are disposed so as to at least partially overlap each other in the vehicle front-rear direction when viewed in the vehicle width direction ,
A subframe is disposed below the front side frame,
a floor framework mechanism that is connected to the front side frame and has an L-shape in a bottom view is disposed on the rear of the slope;
The subframe has a front fastening portion having a first protrusion, a steering gear box element having a second protrusion, and a rear fastening portion having a third protrusion,
the front side frame and the floor framework mechanism each have a first slide portion, a second slide portion and a third slide portion corresponding to the first convex portion, the second convex portion and the third convex portion, respectively;
A vehicle body front structure characterized in that, when a frontal collision load is input, the first convex portion, the second convex portion, and the third convex portion slide down successively relative to the first slide portion, the second slide portion, and the third slide portion. A front side frame extending in the front-rear direction of the vehicle;
a power unit disposed on an inner side of the front side frame in a vehicle width direction,
A slider surface is formed on a vehicle rear end side of a side surface of the power unit facing the front side frame, the slider surface being inclined so as to be inward in a vehicle width direction toward the rear of the vehicle,
the front side frame has a bent portion that is bent so as to be positioned outward in a vehicle width direction toward the front of the vehicle in a bottom view,
a slope on an inner side in the vehicle width direction of the bent portion, the slope being inclined so as to be inward in the vehicle width direction toward the rear of the vehicle;
The slider surface and the inclined surface are disposed so as to at least partially overlap each other in the vehicle front-rear direction when viewed in the vehicle width direction,
A first reinforcing plate having an L-shaped or U-shaped cross section perpendicular to the axis is provided at the vehicle rear portion of the front side frame along the longitudinal direction so as to overlap an inner ridge line of the front side frame,
A second reinforcing plate is provided at a vehicle front portion of the front side frame, the second reinforcing plate being offset outward in a vehicle width direction toward the front of the vehicle,
The first reinforcing plate and the second reinforcing plate are aligned along a vehicle front-rear direction,
The front side frame is composed of a main body portion having a substantially U-shaped cross section and an opening portion on an outer side in a vehicle width direction, and a back plate having a hollow body that closes the opening portion of the main body portion and extends in a vehicle front-rear direction,
the second reinforcing plate is inclined outward in a vehicle width direction from an inner wall of the main body portion toward the front of the vehicle and defines a closed cross section between the second reinforcing plate and the back plate,
A vehicle body front structure, wherein the closed cross section is continuous with the hollow body. A front side frame extending in the front-rear direction of the vehicle;
a power unit disposed on an inner side of the front side frame in a vehicle width direction,
A slider surface is formed on a vehicle rear end side of a side surface of the power unit facing the front side frame, the slider surface being inclined so as to be inward in a vehicle width direction toward the rear of the vehicle,
the front side frame has a bent portion that is bent so as to be positioned outward in a vehicle width direction toward the front of the vehicle in a bottom view,
a slope on an inner side in a vehicle width direction of the bent portion, the slope being inclined so as to be inward in the vehicle width direction toward the rear of the vehicle;
The slider surface and the inclined surface are disposed so as to at least partially overlap each other in the vehicle front-rear direction when viewed from the vehicle width direction,
A first reinforcing plate having an L-shaped or U-shaped cross section perpendicular to the axis is provided at the vehicle rear portion of the front side frame along the longitudinal direction so as to overlap an inner ridge line of the front side frame,
A second reinforcing plate is provided at a vehicle front portion of the front side frame, the second reinforcing plate being offset outward in a vehicle width direction toward the front of the vehicle,
The first reinforcing plate and the second reinforcing plate are aligned along a vehicle front-rear direction,
A vehicle body front structure, characterized in that the second reinforcing plate is aligned with a wall surface of the bumper beam extension in the fore-and-aft direction of the vehicle.

Images