JP6855844B2 - Vehicle front structure - Google Patents

Description

The present invention relates to a front structure including a vehicle bumper.

A bumper facer attached to the front of the vehicle may be attached by providing a bumper bracket between the bumper facer and the frame. Further, an impact detection sensor that detects an impact when the vehicle collides forward may be provided at the front portion of the vehicle.

The bumper bracket may be attached by providing a support member at the lower part when attaching the bumper bracket to the frame. Since the detected signal is used for operating the airbag device or the like, the impact sensing sensor is required to detect the impact early and reliably.

Japanese Unexamined Patent Publication No. 6-316244

When the vehicle collides forward, if the bumper bracket is sandwiched between the impact sensing sensor and the colliding object, the impact energy at the time of the front impact is absorbed by the bumper bracket and the impact of the front impact is indirectly transmitted to the impact sensing sensor. Will be done. Then, the speed and accuracy of detecting the collision of the impact detection sensor may decrease. Therefore, it is preferable that the support member has low rigidity and is easily damaged so that the bumper bracket immediately moves below the impact detection sensor at the time of front collision.

On the other hand, if the rigidity of the support member is low, for example, the support member may buckle when a person simply touches the bumper, which may cause damage to the bumper.

An object of the present invention is to provide a front structure of a vehicle that can prevent the bumper from being deformed downward and that the impact sensing sensor can detect the impact at the time of a front collision at an early stage and surely.

In order to solve the above problems, the present invention has the following configuration of the front structure of the vehicle. The front structure of the vehicle is a bumper facer provided on the front surface of the vehicle, a bumper bracket attached to a first skeleton member extending in the width direction of the vehicle, and fixing the bumper facer to the first skeleton member, and a first skeleton. A second skeleton member provided below the member and extending in the width direction of the vehicle, a support member attached to the second skeleton member to support the bumper bracket, and an impact generated to the vehicle by being attached to the first skeleton member. It is equipped with a shock detecting means for detecting. The support member is provided with a slit extending in the front-rear direction of the vehicle so that the front end side of the vehicle opens and a weakened portion is formed on the rear end side.

The front structure of the vehicle according to the present invention has the following effects. Even if the bumper is pressed from above, the bumper is supported by the bumper bracket and held in place.

It is assumed that a frontal collision accident occurs and a pressing force is applied to the bumper from the front. Then, the weakened portion of the support member of the bumper bracket is deformed in the front-rear direction, and the support member buckles. When the support member buckles, the bumper bracket moves downward to prevent the bumper bracket from being pinched between the impact sensing sensor and the colliding object.

Further, since the support member is easily deformed at the weakened portion, impact energy is not consumed for the deformation of the support member. As a result, the impact generated by the front collision is directly transmitted to the impact sensing sensor, and the impact is detected by the impact sensing sensor with high accuracy.

The perspective view which shows the vehicle which provided the front structure of this invention. The cross-sectional view which shows the front part structure. The perspective view which shows the front part structure. The perspective view which shows the support member of the front structure. The side view which shows the support member. The cross-sectional view which shows the same front structure at the time of the front collision. The side view which shows the support member of the 2nd Embodiment. The front view which shows the support member of 3rd Embodiment. The side view which shows the support member of 3rd Embodiment. The front view which shows the support member of 4th Embodiment. The side view which shows the support member of 5th Embodiment. The side view which shows the support member of 6th Embodiment.

The front structure of the vehicle of one embodiment according to the present invention will be described.

(First Embodiment)
FIG. 1 shows the vehicle 10. The vehicle 10 is provided with a bumper 12, a hood 14, a front windshield glass 16, a headlight 18, and left and right front wheels 20 at the front. Hereinafter, in the description, the straight direction of the vehicle 10 is defined as the front, the opposite is defined as the rear, and the left and right are determined along the width direction of the vehicle 10 with the front as a reference. Further, the direction of gravity when the vehicle 10 is arranged horizontally is set downward, and vice versa.

The bumper 12 is provided on the front surface of the vehicle 10. The bumper 12 includes a bumper facer 22 that forms the surface of the bumper 12 and a bumper bracket 24 (see FIG. 2) that holds the bumper facer 22 from the back side.

The bumper facer 22 is provided on the front surface of the vehicle 10. The bumper facer 22 covers from the front end A of the hood 14 to the lower part of the front surface of the vehicle 10 in the vertical direction and to the vicinity of the left and right front wheels 20 in the width direction. An air intake 23 is appropriately formed in the bumper facer 22. The bumper facer 22 is basically a synthetic resin material and is integrally formed. The bumper facer 22 may be a combination of a plurality of members. A bumper bracket 24 is provided between the bumper facer 22 and the frame 30 of the vehicle 10.

2 and 3 show the front portion of the bumper bracket 24 and the frame 30 of the vehicle 10. FIG. 2 is a cross-sectional view of the bumper bracket 24 and the frame 30 cut off in a vertical plane extending in the front-rear direction of the vehicle 10 through the center in the width direction of the vehicle 10. FIG. 3 is a perspective view showing the front portion of the frame 30 from diagonally forward. The frame 30 is basically made of metal and has a predetermined rigidity.

The frame 30 includes a first skeleton member 32, a second skeleton member 34, a first cross member 36, a pair of left and right front side members 38, and a pair of left and right vertical members 40 at the front portion.

A pair of front side members 38 are provided on the left and right sides of the vehicle 10 along the front-rear direction of the vehicle 10. First cross members 36 are provided in the width direction at the front ends of the left and right front side members 38. The first cross member 36 connects the left and right front side members 38.

A vertical member 40 is attached to the tip of each front side member 38 in the vertical (vertical) direction. A first skeleton member 32 is provided above the vertical member 40. The first skeleton member 32 is provided above the vertical member 40 in the width direction, and connects the left and right vertical members 40. An apron upper member 41 extending from the first pillar 21 (see FIG. 1) of the vehicle 10 is connected to the first skeleton member 32. Further, the first skeleton member 32 is provided with an impact sensing sensor 42 as an impact sensing means on the central rear surface in the width direction.

The impact detection sensor 42 is a sensor that detects an impact generated by a front collision or the like in the vehicle 10, and when the impact is detected, a signal to that effect is sent to the control device. The control device is connected to each predetermined device such as an airbag device, and when a detection signal is sent from the impact detection sensor 42, the control device processes the signal and transmits an operation signal for operating various devices.

A second skeleton member 34 is provided between the first skeleton member 32 and the first cross member 36. The first skeleton member 32, the second skeleton member 34, and the first cross member 36 are provided substantially parallel to each other. A bumper bracket 24 is attached to the front surface of the frame 30.

The bumper bracket 24 is basically entirely made of a synthetic resin material. The bumper bracket 24 is provided with a through hole 53 through which a fixing screw 25 for fixing the bumper facer 22 is passed.

As shown in FIG. 2, the bumper bracket 24 extends from the first skeleton member 32 to the front of the vehicle 10, the upper end thereof is attached to the first skeleton member 32, and the support member 60 is attached to the lower end. The support member 60 is a member for preventing the bumper bracket 24 from hanging under its own weight.

4 and 5 show the support member 60. FIG. 4 is a perspective view showing the support member 60 from diagonally above. FIG. 5 is a side view showing the support member 60 from the left. The support member 60 includes a main body portion 62 and a mounting piece 64. The main body 62 has a substantially rectangular parallelepiped shape extending forward and upward from the frame 30 with the support member 60 attached to the vehicle 10. A pair of mounting pieces 64 are provided at both ends of the main body 62 in the vertical direction with the support member 60 mounted on the vehicle 10. The support member 60 is basically integrally formed of a synthetic resin material.

The mounting piece 64 projects outward from the main body 62 at a predetermined angle α with respect to the longitudinal direction of the main body 62 so as to extend in the substantially vertical direction with the support member 60 mounted on the vehicle 10. .. The mounting pieces 64 are provided parallel to each other. The mounting piece 64 has a through hole 65 at its tip. The upper mounting piece 64 is screwed to the lower end of the bumper bracket 24 using the through hole 65, and the lower mounting piece 64 is screwed to the second skeleton member 34 using the through hole 65. The state shown in FIG. 2 is shown.

Further, the main body 62 has a first slit 66 and a second slit 68. The first slit 66 is located above the second slit 68 with the support member 60 attached to the vehicle 10. The first slit 66 is the upper slit according to the claim.

The first slit 66 is provided at a position below the upper end of the main body 62 by a length (L / 3) of approximately 1/3 of the total length L of the main body 62. The second slit 68 is provided at a position further below the length of L / 3 from the first slit 66.

The first slit 66 and the second slit 68 are provided so as to be arranged substantially horizontally when the support member 60 is attached between the bumper bracket 24 and the second skeleton member 34.

Both the first slit 66 and the second slit 68 are provided over the entire width direction of the main body portion 62. The widths of the first slit 66 and the second slit 68 in the vertical direction may be formed as thin as possible. The first slit 66 has an open rear end, and the second slit 68 has an open front end.

That is, the first slit 66 is formed from the rear surface of the main body 62 to a position forward by a predetermined length, whereby the first thin portion 70 is formed in front of the upper part of the support member 60. Further, the second slit 68 is formed from the front surface of the main body portion 62 to a position rearward by a predetermined length, whereby the second thin-walled portion 72 is formed behind the lower portion of the support member 60.

The first thin-walled portion 70 and the second thin-walled portion 72 are plastically deformed when a force is applied in the direction in which the intervals between the slits are opened, and the support member 60 is bent along the front-rear direction according to the expansion of the slits. The first slit 66 and the second slit 68 weaken the supporting force (rigidity) of the main body 62 with respect to the pressing force in the front-rear direction, and make the support member 60 deformable in the front-rear direction. The first thin-walled portion 70 and the second thin-walled portion 72 are weakened portions according to the claims.

On the other hand, even if the support member 60 receives a pressing force from above, the support member 60 receives a load when the upper and lower inner surfaces of the surfaces formed by the first slit 66 and the second slit 68 come into contact with each other. Therefore, the strength (rigidity) of the support member 60 having the first slit 66 and the second slit 68 against the load from above is substantially the same as the strength against the load from above of the support member 60 having no slit. It is a value of about.

The first slit 66 and the second slit 68 may be formed of, for example, a gap d open in the vertical direction as shown in FIG. Further, the support member 60 may be formed in a state where a part of the upper and lower inner surfaces of the gap d is always in contact with a protrusion or the like formed inside the gap d. The voids may be formed in the same manner in each of the following embodiments.

Next, the action and effect of the front structure of the vehicle 10 will be described. As shown in FIG. 2, the bumper facer 22 is attached to the frame 30 via the bumper bracket 24 on the front surface of the vehicle 10.

For example, it is assumed that the upper surface of the bumper 12 is touched and the bumper 12 is pressed from above. The pressing force from above is transmitted from the bumper facer 22 to the bumper bracket 24, and the pressing force is applied to the support member 60 from above. Since the lower end of the support member 60 is fixed to the second skeleton member 34, the support member 60 is pressed from above and below.

Since the first slit 66 and the second slit 68 provided in the support member 60 are formed substantially horizontally along the front-rear direction, when a pressing force from above is applied, the surface formed by each slit is formed. The upper and lower inner surfaces come into contact. Therefore, the support member 60 does not easily deform such as buckling under the pressing force from above, and holds the bumper bracket 24. Therefore, the bumper facer 22 is securely held by the bumper bracket 24, and the bumper 12 is not damaged even when pressed from above.

Next, the case where the vehicle 10 collides forward will be described. When the vehicle 10 collides with a colliding object, a pressing force is applied to the bumper 12 from the front. The pressing force from the front is transmitted from the bumper facer 22 to the bumper bracket 24. The pressing force transmitted to the bumper bracket 24 presses the upper portion of the support member 60 rearward with respect to the lower portion of the support member 60.

Then, as shown in FIG. 6, in the support member 60, the second thin-walled portion 72 is plastically deformed, and the second slit 68 is expanded. As a result, the mounting piece 64 on the upper part of the support member 60 rotates rearward around the second thin-walled portion 72. Further, in the support member 60, as the second thin-walled portion 72 is plastically deformed, the first thin-walled portion 70 is plastically deformed and the first slit 66 is expanded.

As a result, the bumper bracket 24 moves diagonally backward and downward while the lower portion is connected to the support member 60. The impact sensing sensor 42 is provided on the rear surface of the first skeleton member 32 substantially at the center in the width direction. When the vehicle 10 collides forward and the bumper 12 retracts, the bumper bracket 24 moves diagonally downward and rearward, so that the bumper bracket 24, mainly the upper plate portion 44 of the bumper bracket 24, and the like collide with the impact detection sensor 42. It will not be sandwiched between them.

Further, since the first thin-walled portion 70 and the second thin-walled portion 72 are easily plastically deformed, the impact energy generated by the front collision is not largely absorbed by the deformation of the support member 60. Therefore, the impact energy is directly transmitted to the impact sensing sensor 42, and the accuracy of detecting the impact of the impact sensing sensor 42 is not impaired.

The same effect can be expected even if the support member 60 is provided with only the second slit 68 without providing the first slit 66. However, by providing the support member 60 with the first slit 66 together with the second slit 68, the first slit 66 when the mounting piece 64 on the upper portion of the support member 60 rotates backward around the second thin portion 72. Opens. As a result, the first slit 66 (first thin-walled portion 70) serves as a base point for deformation of the upper portion of the support member 60 due to the backward rotation of the second thin-walled portion 72, and the second thin-walled portion 72 is smoothly rotated. be able to.

Hereinafter, other embodiments of the front structure of the vehicle 10 will be described.

(Second Embodiment)
FIG. 7 shows the support member 60a of the second embodiment. The support member 60a includes a first slit 80 and a second slit 82 in the main body portion 62a. The support member 60a has substantially the same configuration as the support member 60 of the first embodiment except that the first slit 80 and the second slit 82 are provided. The same components are designated by the same reference numerals and replaced with explanations.

As shown in FIG. 7, the first slit 80 and the second slit 82 are cuts extending in the front-rear direction and penetrate in the width direction of the main body portion 62a. The first slit 80 and the second slit 82 have a front wall portion 84 in the front direction and a rear wall portion 85 in the rear direction, so that both front and rear ends are closed by the wall portions. The strength of the rear wall portion 85 of the first slit 80 is weaker than that of the front wall portion 84 of the first slit 80. The rear wall portion 85 of the first slit 80 is the thin-walled portion according to the claim, and the front wall portion 84 is the weakened portion according to the claim.

The strength of the front wall portion 86 of the second slit 82 is weaker than that of the rear wall portion 87 of the second slit 82. The front wall portion 86 of the second slit 82 is the thin-walled portion according to the claim, and the rear wall portion 87 is the weakened portion according to the claim. Like the slits of the support member 60, the first slit 80 and the second slit 82 are provided at their respective positions in which the main body portion 62a is substantially divided into three equal parts.

The front structure of the second embodiment has the following effects. Even if a pressing force is applied to the bumper 12 from above, the support member 60a exhibits high strength because the upper and lower inner surfaces of the surfaces formed by the slits come into contact with each other as in the first embodiment.

Further, since both front and rear ends of the main body portion 62a are closed by the front and rear wall portions, the bumper bracket 24 and the bumper facer 22 do not flutter due to repeated opening and closing of slits due to vibration during traveling or the like.

Should the vehicle 10 collide forward, the front wall portion 86 of the second slit 82 is broken by the load in the front-rear direction due to the front collision, and the main body portion 62a rotates around the rear wall portion 87. Further, the rear wall portion 85 of the first slit 80 is broken by the load in the front-rear direction due to the front collision, the front wall portion 84 is plastically deformed, and the first slit 80 is expanded. As a result, the front structure of the second embodiment has the same effect as that of the front structure of the first embodiment, and has an additional effect of suppressing the fluttering of the bumper bracket 24 and the bumper facer 22. Obtainable. The first slit 80 and the second slit 82 may be gaps that are spaced in the vertical direction, instead of the cuts that are in contact with each other.

(Third Embodiment)
8 and 9 show the support member 60b of the third embodiment. The support member 60b includes a first slit 66b and a second slit 68b as cuts. The support member 60b has substantially the same configuration as the support member 60 of the first embodiment except that the first slit 66b and the second slit 68b are provided. The same components are designated by the same reference numerals and replaced with explanations.

The first slit 66b and the second slit 68b are provided at positions at which the main body portion 62b is substantially divided into three equal parts in the longitudinal direction. In the first slit 66b and the second slit 68b, the first surface 69 (upper surface) and the second surface 71 (lower surface) forming each slit are parallel and in the front-rear direction with a predetermined interval (almost 0). Is linear and has a plurality of bent curved surfaces (concavo-convex portions) which are regulation portions in the width direction. The first slit 66b and the second slit 68b are formed in a so-called saw blade shape when the support member 60b is viewed from the rear. It is preferable that the bent surface is not provided in the vicinity of the thin-walled portions 70 and 72. By doing so, the bent surface does not interfere with the plastic deformation in the thin portions 70 and 72.

In the first slit 66b and the second slit 68b, when the first surface 69 and the second surface 71 try to move relatively in the width direction in different directions, the respective peaks and valleys engage with each other. Movement in the width direction in the slit is restricted.

The support member 60b has a weakened portion that is plastically deformed in the front-rear direction in each slit of the first slit 66b and the second slit 68b, and the support member of the first embodiment with respect to the strength against the pressing force from above. It has almost the same thing that the 60 has.

As a result, the support member 60b has a holding force equivalent to that of the support member 60 of the first embodiment, and is formed in each slit if the pressing force from above deviates in the diagonally lateral direction. The peaks and valleys are engaged with each other to prevent the first slit 66b and the second slit 68b from shifting in the width direction.

The shape of the bent surface may be any shape as long as the movement of each slit in the width direction is restricted, and may be, for example, a shape curved in an arc shape. Further, the regulating portion does not have to be a bent surface provided on the first surface 69 (upper surface) and the second surface 71 (lower surface) forming each slit.

(Fourth Embodiment)
FIG. 10 shows the support member 60c of the fourth embodiment. The support member 60c is provided with locking pieces 77 and 79 as regulating portions on the sides of the first slit 66 and the second slit 68. The support member 60c has substantially the same configuration as the support member 60 of the first embodiment except that the locking pieces 77 and 79 are provided. The same components are designated by the same reference numerals and replaced with explanations.

The first slit 66 and the second slit 68 are provided at positions at which the main body portion 62c is substantially divided into three equal parts in the longitudinal direction. The locking piece 77 is provided on the side of the first slit 66, and the locking piece 79 is provided on the side of the second slit 68.

The locking piece 77 is fixed to one side (lower member) of the main body 62c with the first slit 66 interposed therebetween, and is in contact with the side of the other (upper member) sandwiching the first slit 66. Similarly, the locking piece 79 is fixed to one side of the main body 62c with the second slit 68 interposed therebetween, and is in contact with the other side of the second slit 68.

The support member 60c has a weakened portion that is plastically deformed in the front-rear direction in each of the first slit 66 and the second slit 68, and the support member of the first embodiment with respect to the strength against the pressing force from above. It is the same as that of 60.

According to the support member 60c, since the locking pieces 77 and 79 are provided on the sides of the first slit 66 and the second slit 68, it is assumed that the pressing force applied to the support member 60c from above is diagonally lateral. Even when the slits are displaced in the direction, the locking pieces 77 and 79 formed in the slits prevent the first slit 66 and the second slit 68 from being displaced in the width direction.

(Fifth Embodiment)
FIG. 11 shows the support member 60d of the fourth embodiment. The support member 60d includes a first slit 66d and a second slit 68d as cuts. The support member 60d has substantially the same configuration as the support member 60 of the first embodiment except that the first slit 66d and the second slit 68d are provided. The same components are designated by the same reference numerals and replaced with explanations.

The first slit 66d and the second slit 68d have enlarged portions 73 and 75 extending in the vehicle front-rear direction from the opening P of each slit and expanding in the vertical direction at the innermost portion away from the opening P. ..

Specifically, the enlarged portion 73 of the first slit 66d expands in a triangular shape having an apex downward in the side view, and the enlarged portion 75 of the second slit 68d expands in a triangular shape having an apex upward. There is. The triangular spreads such as the enlarged portion 73 of each slit are formed to have substantially the same shape over the entire width direction of the support member 60d.

When the vehicle 10 collides forward, the first thin-walled portion 70 and the second thin-walled portion 72 are plastically deformed and the enlarged portions 73 and 75 are deformed while being crushed, so that they are sandwiched between the first slit 66d and the second slit 68d. Since the intermediate portion 63 can be smoothly rotated in the direction indicated by the arrow R, the upper mounting piece 64 can be easily moved diagonally backward and downward.

Further, the support member 60d is deformed while the enlarged portions 73 and 75 are crushed, so that the upper mounting piece 64 moves diagonally backward and downward without moving significantly upward. Therefore, in the vehicle 10 to which the support member 60d is assembled, the bumper bracket 24 smoothly moves diagonally backward and downward when the vehicle 10 collides forward. The shape of the enlarged portion 73 and the like is not limited to a triangle.

(Sixth Embodiment)
FIG. 12 shows the support member 60e of the fifth embodiment. The support member 60e includes a first slit 66e and a second slit 68e. The support member 60e has substantially the same configuration as the support member 60 of the first embodiment except that the first slit 66e and the second slit 68e are provided. The same components are designated by the same reference numerals and replaced with explanations.

The first slit 66e and the second slit 68e are formed with a gap d. The voids d have a predetermined interval and are formed substantially in parallel. An elastic body 88 as a cushioning material is provided inside the gap d formed by the first slit 66e and the second slit 68e. The elastic body 88 is made of an elastic member such as a sponge and has a predetermined elasticity.

According to the support member 60e, since the elastic body 88 is filled in the gap d formed in the first slit 66e and the second slit 68e, each slit is repeatedly opened and closed due to vibration during traveling or the like. When the bumper bracket 24 and the bumper facer 22 flutter, the elastic body 88 relaxes the direct contact between the upper and lower surfaces and suppresses noise. Further, even if the width of the slits in the vertical direction becomes large when the slits are formed, the deformation of the slits in the vertical direction when a load is applied from above is reduced. Even if the elastic body 88 is filled in the void d, there is almost no effect on the plastic deformation in the weakened portion.

According to the front structure of the vehicle of the present invention, the bumper 12 is appropriately supported, and in the unlikely event that the vehicle 10 collides with the front, the bumper bracket 24 moves downward to maintain good sensitivity of the impact sensing sensor 42. it can.

The present invention is not limited to that shown in the above embodiment, and can be appropriately modified as long as it fits the gist of the invention. For example, the frame structure of the vehicle 10 is not limited to the above configuration. Further, the shape of the bumper bracket 24 and the shape and configuration of the support member 60 are not limited to the above configuration.

The present invention can be used for mounting a vehicle bumper.

10 ... Vehicle, 12 ... Bumper, 14 ... Hood, 16 ... Front windshield glass, 18 ... Headlight, 20 ... Front wheel, 22 ... Bumper facer, 23 ... Air intake, 24 ... Bumper bracket, 30 ... Frame, 32 ... 1st skeleton member, 34 ... 2nd skeleton member, 36 ... Cross member, 38 ... Front side member, 40 ... Vertical member, 41 ... Apron upper member, 42 ... Impact sensing sensor, 44 ... Top plate, 53 ... Holes, 60 ... Support members, 62 ... Main body parts, 64 ... Mounting pieces, 65 ... Through holes, 66 ... First slits, 68 ... Second slits, 70 ... First thin-walled parts, 72 ... Second thin-walled parts, 80 ... 1st slit, 82 ... 2nd slit, 84 ... front wall part, 87 ... rear wall part, 88 ... elastic body, A ... front end, L ... total length, d ... void.

Claims (7)

The bumper facer installed on the front of the vehicle and
A bumper bracket attached to a first skeleton member extending in the width direction of the vehicle and fixing the bumper facer to the first skeleton member.
A second skeleton member provided below the first skeleton member and extending in the width direction of the vehicle,
A support member attached to the second skeleton member and supporting the bumper bracket,
An impact detecting means attached to the first skeleton member and detecting an impact generated on the vehicle,
With
The front structure of the vehicle is characterized in that the support member includes a slit extending in the front-rear direction of the vehicle so that the front end side of the vehicle opens and a weakened portion is formed on the rear end side. In addition to the slit, the support member has an upper slit extending in the front-rear direction of the vehicle so that the rear end side of the support member opens on the rear end side of the support member and a weakened portion is formed on the front end side. The front structure of the vehicle according to claim 1, wherein the vehicle is provided with. Around the slit, a regulating portion for restricting the relative movement of the upper side and the lower side of the slit sandwiching the slit of the support member in the width direction of the vehicle is provided. The front structure of the vehicle according to claim 1 or 2. The restricting portion is a concavo-convex portion provided on the surface of the support member formed by the slit.
The front structure of a vehicle according to claim 3, wherein the uneven portions are formed so as to correspond to the facing surfaces. The front structure of the vehicle according to any one of claims 1 to 4, wherein an enlarged portion having an enlarged width of the slit in the vertical direction of the vehicle is provided in the vicinity of the weakened portion. .. The front structure of a vehicle according to any one of claims 1 to 5, wherein the opening of the slit is closed by a thin-walled portion that breaks due to a pressing force in the front-rear direction of the vehicle. The front structure of a vehicle according to any one of claims 1 to 6 , wherein a cushioning material that absorbs an impact in the vertical direction of the vehicle is provided on the surface formed by the slit.

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