JP2009190429A - Front body structure of vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a front body structure of a vehicle capable of reducing the possibility of the secondary collision of a collided body, which collided with the front section of a vehicle, with the pillar of the vehicle. <P>SOLUTION: A first shape retainable member 32 is disposed in an engine room 26 under a hood 12 at the vehicle longitudinal front side of the hood 12. A second shape retainable member 34 is disposed under a fender panel 14 on the vehicle longitudinal front side. The first shape retainable member 32 and the second shape retainable member 34 comprise, on the vehicle lateral outer side, sloped surfaces 32A, 34A tilting toward the vehicle vertical lower side when viewed from the vehicle longitudinal front side, respectively. Also, these members are formed in such shapes that the vehicle longitudinal rear side is expanded to the vehicle lateral outer side at a predetermined angle relative to the vehicle longitudinal direction when viewed from the vehicle vertical upper side. Consequently, the hood 12 and the fender panel 14 are so controlled that the shapes of the hood and the fender panel after collision are brought into predetermined deformed shapes B when the collided body is collided. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a front body structure of a vehicle.

Conventionally, a collision body that has collided with the front portion of the vehicle and jumped up on the hood may collide with the pillar in a secondary collision. On the other hand, the following Patent Document 1 has a configuration in which the occurrence of a collision is detected by a sensor and an air bag is deployed so as to cover the pillar in order to mitigate the collision when the colliding body collides with the pillar. It is disclosed.
JP 2000-264146 A

  However, in the case of the above prior art, there is a problem that the configuration for installing the airbag is complicated, leading to a large cost increase. Against this background, there is a long-awaited technique for preventing the collision body from causing a secondary collision with the pillar.

  In consideration of the above facts, an object of the present invention is to obtain a vehicle front body structure that can reduce the collision of a colliding body that has collided with the front portion of the vehicle into a secondary collision.

  According to a first aspect of the present invention, there is provided a vehicle front body structure including a hood attached to a front side in a vehicle front-rear direction and pillars disposed on both sides of a front window on the rear side in the vehicle front-rear direction. And a behavior control means for controlling the behavior of the colliding body after the collision so that the colliding body colliding with the front end corner of the vehicle does not collide with the pillar.

  According to a second aspect of the present invention, in the vehicle front body structure according to the first aspect, the behavior control means is provided on at least one of the hood and fenders disposed on both sides of the hood in the vehicle width direction, It is an inclined portion that supports the collision body so that the behavior after the collision of the collision body is deviated from the pillar when a load is input to the front end corner of the vehicle due to the collision of the collision body. And

  According to a third aspect of the present invention, in the vehicle front body structure according to the second aspect of the present invention, the inclined portion is provided on the vehicle front-rear direction front side and the vehicle width direction outer side in at least one of the hood and the fender by the input of the load. It is formed by a deformation restricting means for deforming the part.

  According to a fourth aspect of the present invention, in the vehicle front body structure according to the third aspect, the deformation restricting means is provided below at least one of the hood and the fender, and at least one of the hood and the fender. It is a shape holding member that holds the shape after the collision in the shape in which the inclined portion is formed.

  According to a fifth aspect of the present invention, in the vehicle front body structure according to any one of the second to fourth aspects, the inclined portion has a vehicle width direction outside in a front view from the front side in the vehicle front-rear direction. The vehicle tilts downward in the vehicle vertical direction at an angle of 30 ° to 60 ° with respect to the horizontal direction, and the vehicle longitudinal direction rear side is 30 ° to the vehicle longitudinal direction in plan view from the vehicle vertical direction upper side. It is a shape which inclines so that it may spread toward the vehicle width direction outer side at an angle of 60 degrees.

  According to a sixth aspect of the present invention, in the front body structure of the vehicle according to the second aspect, the inclined portion is provided on the vehicle front-rear direction front side and the vehicle width direction outer side in at least one of the hood and the fender by the input of the load. It is characterized by being exposed when the mounting member that is detachably mounted on the part is detached.

  According to a seventh aspect of the present invention, in the vehicle front body structure according to the sixth aspect, the inclined portion constitutes at least one of the hood and the fender, and the vehicle is viewed from the front in the vehicle front-rear direction. The outer side in the width direction is inclined toward the lower side in the vehicle vertical direction at an angle of 30 ° to 60 ° with respect to the horizontal direction, and in the plan view from the upper side in the vertical direction of the vehicle, the rear side in the vehicle front and rear direction is An inclined surface that is inclined so as to expand outward in the vehicle width direction at an angle of 30 ° to 60 °, and the mounting member is attached to the upper surface of the inclined surface, and at least one of the hood and the fender A design surface is formed, and the design surface is configured to deviate from the inclined surface when a predetermined load or more is applied.

  According to the first aspect of the present invention, the behavior control means for controlling the behavior after the collision of the colliding body colliding with the vehicle front end corner portion is provided, and the colliding body colliding with the vehicle front end corner portion is provided with the hood. The behavior of the collision object after the collision is controlled so as not to collide with the pillars disposed on both sides of the front window on the rear side in the vehicle longitudinal direction. That is, the behavior control means controls the jumping-up behavior of the colliding body that has collided with the hood or the like at the front corner of the vehicle to be a behavior that deviates from the pillar. Accordingly, it is possible to reduce the possibility that the colliding body secondarily collides with the pillar.

  According to the second aspect of the present invention, when a load is input to the front end corner portion of the vehicle due to the collision of the collision body, the hood and at least one of the fenders disposed on both sides of the hood in the vehicle width direction are provided. By supporting the collision body with the inclined portion, the behavior after the collision of the collision body is controlled so as to deviate from the pillar. That is, the jumping behavior of the collision object can be guided to a trajectory deviating from the pillar. Therefore, it is possible to more reliably reduce the possibility that the colliding body will have a secondary collision with the pillar.

  According to the third aspect of the present invention, when a load is input at the time of collision of the collision body, the deformation regulating means that deforms the front side in the vehicle front-rear direction and the outer side in the vehicle width direction in at least one of the hood and the fender, An inclined portion is formed at the site. For this reason, with a simple configuration in which at least one of the hood and the fender is deformed, the jumping behavior of the colliding body that has collided with the hood or the fender can be guided to a trajectory that deviates from the pillar.

  According to the fourth aspect of the present invention, the shape holding member is provided on the lower side of at least one of the hood and the fender, and when the collision body collides, the shape after the collision of at least one of the hood and the fender is: The inclined portion is held in the formed shape. For this reason, it is possible to form the inclined portion with a simple configuration by deforming at least one of the hood and the fender into a predetermined shape after the collision.

  According to the fifth aspect of the present invention, the inclined portion formed when the colliding body collides with at least one of the hood and the fender has a horizontal outer side in the vehicle width direction when viewed from the front in the vehicle front-rear direction. In contrast, the vehicle tilts downward in the vehicle vertical direction at an angle of 30 ° to 60 °, and the vehicle longitudinal direction rear side is an angle of 30 ° to 60 ° with respect to the vehicle longitudinal direction in plan view from the vehicle vertical direction upper side. Thus, the shape is inclined so as to expand outward in the vehicle width direction. For this reason, the inclined portion having a predetermined shape can be formed with a simple configuration when the collision object collides.

  According to the sixth aspect of the present invention, when a load is input at the time of collision of the colliding body, the mounting member mounted on the front side in the vehicle front-rear direction and the outer side in the vehicle width direction in at least one of the hood and the fender is detached. As a result, the inclined portion is exposed. The collision object is supported by the inclined portion, so that the behavior of the collision object after the collision is guided. For this reason, it is possible to guide the jumping-up behavior of the colliding body that has collided with the hood or the fender to a track deviating from the pillar with a simple configuration in which the mounting member is detached.

  According to the seventh aspect of the present invention, the inclined portion is directed downward in the vehicle vertical direction at an angle of 30 ° to 60 ° with respect to the horizontal direction on the outer side in the vehicle width direction when viewed from the front side in the vehicle front-rear direction. And an inclined surface that is inclined so that the rear side in the vehicle front-rear direction extends at an angle of 30 ° to 60 ° with respect to the vehicle front-rear direction and extends outward in the vehicle width direction. A mounting member is attached to the upper surface of the inclined surface to form at least one design surface of the hood and the fender. When the impacting body collides and a load of a predetermined level or more is applied, the mounting member comes off the inclined surface, so that the inclined surface appears. The behavior of the collision object after the collision is controlled by the inclined surface. For this reason, the jumping-up behavior of the colliding body colliding with the hood or the fender can be guided to the trajectory deviating from the pillar without harming the design surface of at least one of the hood and the fender.

  As described above, the vehicle front body structure according to the first aspect of the present invention has an excellent effect that the collision body that collides with the front end corner of the vehicle can reduce the possibility of a secondary collision with the pillar. Have.

  In the vehicle front body structure according to the second aspect of the present invention, the collision body that has collided with the front portion of the vehicle more reliably reduces the possibility of a secondary collision with the pillar by supporting the collision body with the inclined portion. It has an excellent effect of being able to.

  The vehicle front body structure according to the third aspect of the present invention has a simple configuration in which at least one of the hood and the fender is deformed, and the jumping behavior of the collision body after the collision can be guided to a track deviating from the pillar. It has an excellent effect.

  The vehicle front body structure according to the fourth aspect of the present invention has an excellent effect that an inclined portion can be formed in at least one of the hood and the fender after a collision with a simple configuration in which a shape holding member is provided. .

  The vehicle front body structure according to the fifth aspect of the present invention has an excellent effect that the inclined portion can be formed on at least one of the hood and the fender with a simple configuration.

  The vehicle front body structure according to the sixth aspect of the present invention has a simple configuration in which the mounting member is detached, and the jumping behavior of the collision body that has collided with the hood or the fender can be guided to the trajectory deviating from the pillar. Has an excellent effect.

  The front body structure of the vehicle according to the seventh aspect of the present invention can guide the jumping behavior of the collision body after the collision to a track deviating from the pillar without harming the design surface of at least one of the hood and the fender. Has an excellent effect.

  [First Embodiment]

  Hereinafter, a first embodiment of a vehicle front body structure according to the present invention will be described with reference to FIGS. In these drawings, an arrow FR appropriately shown indicates the vehicle front side, an arrow UP indicates the vehicle upper side, and an arrow OUT indicates the vehicle width direction outer side.

  FIG. 1 shows an overall configuration of a vehicle front body structure according to the present embodiment. FIG. 2 is a partial plan view of the front body structure of the vehicle. As shown in these drawings, a hood 12 is attached to the front side of the vehicle 10 in the vehicle front-rear direction so that it can be opened and closed, and fender panels 14 are arranged along the vehicle front-rear direction on both sides of the hood 12 in the vehicle width direction. It is installed. Headlamps 16 are disposed at both ends in the vehicle width direction on the front side in the vehicle front-rear direction near the parting part of the hood 12 and the fender panel 14. A front pillar 20 is disposed on the rear side of the fender panel 14 in the vehicle front-rear direction, and a window shield glass 18 serving as a front window is disposed between the front pillars 20 on the rear side of the hood 12 in the vehicle front-rear direction. It is installed. The window shield glass 18 and the front pillar 20 are provided so as to have an ascending slope on the rear side in the vehicle front-rear direction.

  FIG. 3 is a longitudinal sectional view taken along line AA of the vehicle 10 in FIG. As shown in the figure, a reinforcing inner panel 22 having a substantially hat-shaped cross section is disposed at the lower part of both ends of the hood 12 in the vehicle width direction. A flange portion 22 </ b> A on the inner side of the inner panel 22 in the vehicle width direction is joined to the lower portion of the hood 12. Moreover, the vehicle width direction end part of the hood 12 is folded back to the flange part 22B on the vehicle width direction outer side of the inner panel 22, and the flange part 22B of the inner panel 22 and the hood 12 are joined by so-called hemming. FIG. 3 shows only one side in the vehicle width direction (right side in FIG. 1), and the other side in the vehicle width direction (left side in FIG. 1) is omitted.

  The fender panel 14 covers the upper side of the front wheel 24 (see FIG. 1) and forms a curved outer vertical wall portion 14A that forms a design surface on the front side of the vehicle side, and downward from the upper end portion of the outer vertical wall portion 14A. The inner vertical wall portion 14B is provided so as to incline in stages, and the inner lower surface portion 14C extends substantially horizontally from the inner vertical wall portion 14B to the engine room 26 side. The hood 12 described above is disposed between the upper ends of the inner vertical wall portions 14B of the pair of left and right fender panels 14, and the engine room 26 can be opened and closed around a hood hinge (not shown).

  Below the inner lower surface portion 14C of the fender panel 14, an apron member 28 extending along the vehicle front-rear direction is disposed. The apron member 28 is formed in a closed cross-sectional structure by an apron member upper 29 having a substantially U-shaped cross section disposed on the upper side and an apron member lower 30 having a substantially L-shaped cross section disposed on the lower side. ing. One end portion 29A of the apron member upper 29 on the outer side in the vehicle width direction is bent substantially horizontally and joined to the upper surface portion 30A of the apron member lower 30. The other end portion 29B of the apron member upper 29 on the inner side in the vehicle width direction is The bend is slightly bent inward in the vehicle width direction and joined to the inner vertical wall 30B of the apron member lower 30.

  In the engine room 26 below the hood 12, a first shape holding member 32 is disposed as a deformation restricting means on the front side of the hood 12 in the vehicle front-rear direction. Below the fender panel 14, the 2nd shape holding member 34 as a deformation | transformation control means is arrange | positioned in the vehicle front-back direction front side. As shown in FIGS. 1 and 2, the first shape holding member 32 and the second shape holding member 34 have a predetermined shape after the collision of the hood 12 and the fender panel 14 when a collision object collides with the vehicle 10. The deformed shape B is restricted.

As shown in FIG. 3, the first shape holding member 32 and the second shape holding member 34 are arranged in the vehicle vertical direction at a predetermined angle with respect to the horizontal direction on the outer side in the vehicle width direction when viewed from the front in the vehicle front-rear direction. Inclined surfaces 32A and 34A that are inclined toward the lower side are formed. The inclination angles of the inclined surfaces 32A and 34A are such that when the collision object collides with the vehicle 10, the deformed shape B after the collision of the hood 12 and the fender panel 14 is outside in the vehicle width direction in a front view from the front side in the vehicle front-rear direction. Is set so as to incline downward in the vehicle vertical direction at an angle of about 45 ° with respect to the horizontal direction (θ ₂ = 45 ° in FIG. 4). In other words, the surface (deformed shape B) on which the hood 12 and the fender panel 14 are deformed when the collision object collides is the “inclined portion” described in claim 2. In the present embodiment, the inclined surface 34A is set to have a shape in which the vehicle width direction outer side is inclined downward in the vehicle vertical direction at an angle of about 45 ° with respect to the horizontal direction. Further, since the inner surface 22 is provided on the hood 12, the inclined surface 32A has a shape in which the outer side in the vehicle width direction is inclined downward in the vehicle vertical direction at an angle larger than about 45 ° with respect to the horizontal direction. Is set.

As shown in FIG. 2, the first shape holding member 32 and the second shape holding member 34 are disposed so as to be positioned between the extension lines of both ends of the front pillar 20 in the vehicle width direction. . Further, the first shape holding member 32 and the second shape holding member 34 are arranged such that the rear side in the vehicle front-rear direction is an angle of about 45 ° with respect to the vehicle front-rear direction (θ _{1 in} FIG. = 45 °) and is formed so as to be inclined toward the outside in the vehicle width direction (see deformation shape B of the hood 12 and the fender panel 14 in FIG. 2).

  Further, the rigidity of the first shape holding member 32 and the second shape holding member 34 is set to be larger than the rigidity of the hood 12 and the fender panel 14. The first shape holding member 32 is configured by utilizing the shape of existing parts in the engine room 26. A dedicated part may be provided in the engine room 26. The second shape holding member 34 is attached to the apron member lower 30 via a bracket (not shown). The second shape retaining member 34 may be attached to the housing of the headlamp 16 via a bracket (not shown).

  Next, the operation and effect of this embodiment will be described.

When the collision body collides with the vicinity of the hood 12 and the fender panel 14 of the vehicle 10, as shown in FIG. 4, the hood 12 and the fender panel 14 are recessed in the vehicle width direction inner side and the vehicle vertical direction lower side, and the hood 12 and the fender panel. 14 is deformed into a shape along the inclined surface 32 </ b> A of the first shape holding member 32 and the inclined surface 34 </ b> A of the second shape holding member 34. That is, the deformed shape B after the collision of the hood 12 and the fender panel 14 is such that the vehicle width direction outside is directed downward in the vehicle vertical direction at an angle of about 45 ° with respect to the horizontal direction when viewed from the front in the vehicle front-rear direction. ([Theta] ₂ = 45 [deg.] In FIG. 4). At the same time, as shown in FIG. 2, the deformed shape B after the collision of the hood 12 and the fender panel 14 has a vehicle front-rear direction rear side of about 45 ° with respect to the vehicle front-rear direction in plan view from the upper side of the vehicle vertical direction. At an angle of ( _{1 in} FIG. 2 = 45 °). That is, the inclined surface 32A of the first shape holding member 32 and the inclined surface 34A of the second shape holding member 34 restrict deformation of the front portion in the vehicle front-rear direction and the vehicle width direction outer side of the hood 12 and the fender panel 14. The shape of the part is deformed into a predetermined deformed shape B. As a result, the impacting body (particularly a portion slightly above the center of gravity of the impacting body) that has collided with the hood 12 and the fender panel 14 is pushed outward in the vehicle width direction, and the jumping behavior of the impacting body is guided to a track deviating from the front pillar 20. be able to. For this reason, it is possible to reduce the possibility that the collision body will collide with the front pillar 20 in a secondary collision.

  In such a front body structure of the vehicle, the behavior of the impact body after the collision with the predetermined portions of the hood 12 and the fender panel 14 is made simple by providing the first shape holding member 32 and the second shape holding member 34. Can be deformed into a deformed shape B that does not collide with the front pillar 20.

  Further, it is desirable that the deformed shape B after the collision of the hood 12 and the fender panel 14 is set so that a portion slightly above the center of gravity of the collision body is pushed outward in the vehicle width direction. For example, when the collision object is a pedestrian, walking is performed by setting the trunk part of the pedestrian (the part slightly above the waist of the pedestrian) and the upper side thereof to be pushed outward in the vehicle width direction. The person's head can be shifted outward in the vehicle width direction. Thereby, the jumping-up behavior of the collision object can be reliably guided by the trajectory deviating from the front pillar 20.

  [Second Embodiment]

  A second embodiment of a vehicle front body structure according to the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the member same as 1st Embodiment, and the overlapping description is abbreviate | omitted.

  As shown in FIGS. 5 and 6, a hood 52 is attached to the front side in the front-rear direction of the vehicle 50 so that it can be opened and closed, and fender panels 54 extend along the vehicle front-rear direction on both sides of the hood 52 in the vehicle width direction. It is arranged. A mounting member 56 that constitutes a design surface of the parting part of the hood 52 and the fender panel 54 is disposed on the front side in the vehicle front-rear direction in the vicinity of the parting part of the hood 52 and the fender panel 54.

  As shown in FIG. 6, an inner panel 58 having a substantially hat-shaped cross section is disposed at the lower part of both ends of the hood 52 in the vehicle width direction. A flange portion 58 </ b> A on the inner side of the inner panel 58 in the vehicle width direction is joined to the lower portion of the hood 52. Further, the end of the hood 52 in the vehicle width direction is folded back to the outer flange 58B of the inner panel 58 in the vehicle width direction, and the flange 58B of the inner panel 58 and the hood 52 are joined by so-called hemming. On both sides of the hood 52 in the vehicle width direction, first inner inclined surfaces 52A are formed as inclined portions that are inclined downward toward the vehicle width direction outer side.

  The fender panel 54 has an outer vertical wall 54A that covers the upper side of the front wheel 24 (see FIG. 5) and forms a design surface, and a downward slope toward the outer side in the vehicle width direction on the upper side of the outer vertical wall 54A. The second inner inclined surface 54D as the inclined portion formed as described above, the inner vertical wall portion 54B provided so as to be gradually inclined downward from the upper end portion of the second inner inclined surface 54D, and the inner side An inner lower surface portion 54C extending substantially horizontally from the vertical wall portion 54B to the engine room 26 side.

  The first inner inclined surface 52A of the hood 52 and the second inner inclined surface 54D of the fender panel 54 are provided substantially on the extension line, and the vehicle width direction outer side is in a horizontal direction with respect to the horizontal direction when viewed from the front side in the vehicle front-rear direction. And is inclined so as to incline downward in the vehicle vertical direction at an angle of about 45 °. Further, the first inner inclined surface 52A of the hood 52 and the second inner inclined surface 54D of the fender panel 54 have an angle of about 45 ° at the rear side in the vehicle front-rear direction with respect to the vehicle front-rear direction in plan view from the upper side in the vehicle vertical direction. Thus, the shape is set to be inclined so as to expand outward in the vehicle width direction (see FIG. 5).

  The mounting member 56 includes a substantially flat lower surface portion 56A and an outer curved surface 56B that protrudes in a bow shape with respect to the lower surface portion 56A. The outer curved surface 56B is a design of the hood 52 and the fender panel 54. Make up surface. The mounting member 56 is disposed such that the lower surface portion 56A is in surface contact with the upper surfaces of the first inner inclined surface 52A of the hood 52 and the second inner inclined surface 54D of the fender panel 54. Then, the clip 60 attached to the lower surface portion 56 </ b> A is engaged with the peripheral edge of the hole 53 formed in the first inner inclined surface 52 </ b> A of the hood 52, so that the mounting member 56 is attached to the first inner inclined surface 52 </ b> A of the hood 52. Installed. In this configuration, when a predetermined load or more is applied to the mounting member 56 due to a collision of a collision body, the clip 60 is detached from the hole 53 of the first inner inclined surface 52A, and the mounting member 56 is dropped. . That is, the detachment load of the mounting member 56 is set to be smaller than the deformation load of the first inner inclined surface 52A of the hood 52 and the second inner inclined surface 54D of the fender panel 54 disposed below the mounting member 56.

  Next, the operation and effect of this embodiment will be described.

  When a collision body collides near the mounting member 56 of the vehicle 50 and a load exceeding a predetermined level is applied, the clip 60 is detached from the hole 53 of the first inner inclined surface 52A as shown in FIG. 52 and the fender panel 54. Thereby, the first inner inclined surface 52A of the hood 52 and the second inner inclined surface 54D of the fender panel 54 appear. The first inner inclined surface 52A of the hood 52 and the second inner inclined surface 54D of the fender panel 54 are arranged so that the vehicle width direction outer side is at an angle of about 45 ° with respect to the horizontal direction when viewed from the front in the vehicle front-rear direction. The rear side in the vehicle front-rear direction expands outward in the vehicle width direction at an angle of about 45 ° with respect to the vehicle front-rear direction in plan view from the upper side in the vehicle vertical direction. In this way, the shape is inclined. As described above, when the mounting member 56 is detached and the first inner inclined surface 52A of the hood 52 and the second inner inclined surface 54D of the fender panel 54 appear, a collision body that collides with the hood 52 and the fender panel 54 (particularly, a collision body). The portion slightly above the center of gravity) is pushed outward in the vehicle width direction, and the jumping-up behavior of the collision object can be guided to the track deviating from the front pillar 20. For this reason, it is possible to reduce the possibility that the collision body will collide with the front pillar 20 in a secondary collision.

  In such a vehicle front body structure, the mounting member 56 is detachably attached to the first inner inclined surface 52A of the hood 52 and the second inner inclined surface 54D of the fender panel 54, so that when a collision object collides. The mounting member 56 is detached, and shapes (first inner inclined surface 52A and second inner inclined surface 54D) such that the collision body does not collide with the front pillar 20 are formed at predetermined portions of the hood 52 and the fender panel 54. appear. For this reason, the jumping-up behavior of the colliding body that has collided with the hood 52 or the fender panel 54 can be guided to the trajectory deviating from the pillar without harming the design surface of the hood 52 and the fender panel 54.

  The first inner inclined surface 52A of the hood 52 and the second inner inclined surface 54D of the fender panel 54 are preferably set to have a shape such that a portion slightly above the center of gravity of the collision object is pushed outward in the vehicle width direction. . Thereby, the jumping-up behavior of the collision object can be reliably guided by the trajectory deviating from the front pillar 20.

  [Supplementary explanation of the embodiment]

(1) In the first embodiment described above, by providing the first shape holding member 32 and the second shape holding member 34, the deformed shape B after the collision of the hood 12 and the fender panel 14 is prevented from the front side in the vehicle front-rear direction. When viewed from the front, the vehicle width direction outer side is configured to be regulated to a shape that is inclined downward in the vehicle vertical direction at an angle of about 45 ° with respect to the horizontal direction. This angle (in FIG. 4) θ ₂ ) is not limited to 45 ° and can be set in the range of 30 ° to 60 °. Further, the deformed shape B after the collision of the hood 12 and the fender panel 14 is such that the rear side in the vehicle front-rear direction faces outward in the vehicle width direction at an angle of about 45 ° with respect to the vehicle front-rear direction in plan view from the upper side in the vehicle vertical direction. However, this angle (θ _{1 in} FIG. 2) is not limited to 45 °, and can be set in the range of 30 ° to 60 °. By setting such an angle, the jumping-up behavior of the colliding body that has collided with the hood 12 or the fender panel 14 can be guided to a track deviating from the front pillar 20.

  (2) In the second embodiment described above, the first inner inclined surface 52A of the hood 52 and the second inner inclined surface 54D of the fender panel 54 are horizontal in the vehicle width direction outer side when viewed from the front in the vehicle front-rear direction. However, the angle is not limited to 45 ° and can be set in the range of 30 ° to 60 °. Further, the first inner inclined surface 52A of the hood 52 and the second inner inclined surface 54D of the fender panel 54 have an angle of about 45 ° at the rear side in the vehicle front-rear direction with respect to the vehicle front-rear direction in plan view from the upper side in the vehicle vertical direction. However, this angle is not limited to 45 °, and can be appropriately set in the range of 30 ° to 60 °. By setting such an angle, the jumping-up behavior of the colliding body that has collided with the hood 52 or the fender panel 54 can be guided to a trajectory deviating from the front pillar 20.

  (3) In the first embodiment described above, the portions of the hood 12 and the fender panel 14 that are deformed are substantially the same in rigidity as the surrounding portions that are not deformed, but the stiffness of the portions of the hood 12 and the fender panel 14 that are deformed. May be set to be weaker than the rigidity of the surrounding region. For example, when the depth of the inner panel 22 of the hood 12 is reduced, the portion of the hood 12 to be deformed can be made weaker than the rigidity of the surrounding portion.

  (4) In the second embodiment described above, the mounting member 56 is joined to the first inner inclined surface 52A of the hood 52 by the clip 60. However, the present invention is not limited to this, and other joining means may be used. For example, the mounting member 56 is joined to the hood 52 with bolts and nuts, and the bolt through hole is made larger than the shaft portion of the bolt so that the bolt can be easily removed, or the mounting member 56 is joined to the hood 52 with thin rivets. It is good also as a structure. In other words, any structure may be used as long as the mounting member 56 is detached when a predetermined load or more is applied by the collision of the collision body.

  (5) In the first embodiment and the second embodiment described above, both the parts of the hood and the fender panel after the collision are deformed, or the mounting members in both parts of the hood and the fender panel after the collision are detached. However, the present invention is not limited to these, and a configuration in which at least one of the hood and the fender panel is deformed or detached may be used. The part to be deformed or separated from the vehicle is preferably a part located on the extension line of both ends of the front pillar in the vehicle width direction (see FIG. 2), and an appropriate part is deformed or changed depending on the shape and size of the vehicle. It can be configured to be detached. By deforming or detaching an appropriate portion of at least one of the hood and the fender panel, the jumping behavior of the collision body that has collided with the hood or the fender panel can be reliably guided by the trajectory deviating from the front pillar.

1 is a perspective view showing a front portion of a vehicle to which a vehicle front body structure according to a first embodiment is applied. 1 is a plan view showing a vehicle to which a vehicle front body structure according to a first embodiment is applied. It is a longitudinal cross-sectional view which shows the cross section of the vehicle along the AA line in FIG. It is a longitudinal cross-sectional view which shows the deformation | transformation state of a hood and a fender panel after a collision body collides. It is a perspective view which shows the front part of the vehicle to which the front body structure of the vehicle which concerns on 2nd Embodiment was applied. It is a longitudinal cross-sectional view which shows the vehicle with which the front body structure of the vehicle which concerns on 2nd Embodiment was applied. It is a longitudinal cross-sectional view which shows the deformation | transformation state of a hood and a fender panel after a collision body collides.

Explanation of symbols

10 Vehicle 12 Hood 14 Fender panel (fender)
18 Window shield glass (front window)
20 Front pillar (pillar)
32 1st shape holding member (deformation control means)
32A Inclined surface 34 Second shape holding member (deformation restricting means)
34A Inclined surface 50 Vehicle 52 Hood 52A First inner inclined surface (inclined portion)
54 Fender panel (fender)
54D 2nd inside inclined surface (inclined part)
56 Mounting members

Claims (7)

A hood attached to the front side of the vehicle longitudinal direction,
A vehicle front body structure having pillars disposed on both sides of a front window on the vehicle front-rear direction rear side of the hood,
A vehicle front body structure comprising behavior control means for controlling a behavior of the collision body after the collision so that a collision body that collides with the front end corner of the vehicle does not collide with the pillar. The behavior control means is
Provided on at least one of the hood and a fender disposed on both sides of the hood in the vehicle width direction, and when a load is input to the front end corner of the vehicle due to the collision of the collision body, The vehicle front body structure according to claim 1, wherein the vehicle body is an inclined portion that supports the collision body so that the behavior is a behavior deviating from the pillar. The inclined portion is
3. The vehicle front according to claim 2, wherein the front of the vehicle is formed by deformation restriction means that deforms at least one of the hood and the fender in front of the vehicle in the front-rear direction and outside in the vehicle width direction by the input of the load. Body structure. The deformation regulating means is
The shape holding member is provided on a lower side of at least one of the hood and the fender, and holds a shape after collision of at least one of the hood and the fender in a shape in which the inclined portion is formed. The front body structure of the vehicle according to claim 3. The inclined portion is
In front view from the front side of the vehicle front-rear direction, the vehicle width direction outer side is inclined toward the vehicle vertical direction lower side at an angle of 30 ° to 60 ° with respect to the horizontal direction,
In a plan view from the upper side in the vehicle vertical direction, the rear side in the vehicle front-rear direction has a shape inclined at an angle of 30 ° to 60 ° with respect to the vehicle front-rear direction so as to expand outward in the vehicle width direction. The vehicle front body structure according to any one of claims 2 to 4. The inclined portion is
The input of the load reveals that at least one of the hood and the fender is disengaged from a mounting member that is detachably mounted on a front side in a vehicle front-rear direction and an outer side in the vehicle width direction. The front body structure of the vehicle according to 2. The inclined portion is
At least one of the hood and the fender, and when viewed from the front in the front-rear direction of the vehicle, the outer side in the vehicle width direction is directed to the lower side in the vertical direction of the vehicle at an angle of 30 ° to 60 ° with respect to the horizontal direction. And an inclined surface that is inclined so that the rear side in the vehicle front-rear direction extends at an angle of 30 ° to 60 ° with respect to the vehicle front-rear direction and extends outward in the vehicle width direction. Yes,
The mounting member is attached to the upper surface of the inclined surface to form at least one design surface of the hood and the fender, and is configured to be detached from the inclined surface when a predetermined load or more is applied. The vehicle front body structure according to claim 6.

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