WO2019008739A1

WO2019008739A1 - Structure for front portion of vehicle body

Info

Publication number: WO2019008739A1
Application number: PCT/JP2017/024945
Authority: WO
Inventors: 真人佐々木
Original assignee: 本田技研工業株式会社
Priority date: 2017-07-07
Filing date: 2017-07-07
Publication date: 2019-01-10
Also published as: CN110719861B; CN110719861A

Abstract

This structure for the front portion of a vehicle body is provided with a hood hinge for supporting a front hood in an openable and closable manner. The hood hinge is provided with a hinge lower section and a hinge upper section. The hinge lower section is attached to the vehicle body, and the hinge upper section is attached to the front hood. The hinge upper section is provided with an upper surface and a side surface. The upper surface extends in the front-rear direction and the vehicle width direction. The side surface extends downward from the outer edge, in the vehicle width direction, of the upper surface. A first flexion point of the upper surface and a second flexion point of the side surface coincide in the longitudinal direction of the hinge upper section.

Description

Front body structure

The present invention relates to a vehicle body front structure.

In recent years, as a vehicle body front structure, in order to ease the impact of a secondary collision of a pedestrian who has collided with the vehicle, lifting up the rear end of the front hood of the vehicle to deform the front hood due to the secondary collision of the pedestrian It is known to increase the size of The front body structure is equipped with a safety device for the vehicle to lift and hold the front hood.
The automobile safety device employs a direct acting actuator including a cylinder and a piston rod. By generating high pressure gas inside the cylinder, the piston rod is raised to lift the front hood. The actuator is long up and down. The lower end of the actuator is displaced downward after the secondary collision of the pedestrian.

By the way, in the vehicle body front structure, in order to lift the rear end of the front hood, a slit is provided in the hinge of the front hood, and the hinge is bent starting from the slit. By bending the hinge starting from the slit, it is possible to lift the rear end of the front hood (see, for example, Patent Document 1).

Patent No. 4934639

However, in the vehicle body front structure of Patent Document 1, the slit extends in the opening and closing direction of the hinge (that is, the front hood). Therefore, at the time of normal opening and closing of the front hood, a force acts to bend the hinge from the slit. Therefore, in order to prevent the hinge from bending when the front hood is normally opened and closed, it is necessary to take measures such as increasing the thickness of the hinge.

Therefore, the present invention provides a vehicle body front structure capable of deforming a hinge without providing a large slit that is insufficient in rigidity when the front hood is normally opened and closed.

In the vehicle-body front structure of the aspect which concerns on this invention, in order to solve the said subject, the following structures were employ | adopted.
(1) The vehicle body front structure according to one aspect of the present invention is a vehicle body front structure provided with a pop-up hood hinge for supporting a hood in an openable / closable manner, wherein the hood hinge is a hinge lower attached to the vehicle body A hinge upper attached to the hood, the hinge upper having an upper surface extending in the front-rear direction and the vehicle width direction, and a side surface extending downward from one edge of the upper surface in the vehicle width direction; A first inflection point convex outward with respect to the upper surface at one edge in the width direction coincides with a second inflection point concave downward in the side surface in the longitudinal direction of the hinge upper It is characterized by

(2) In the vehicle body front structure according to the above aspect (1), the side surface has a first portion provided on a shaft portion side pivotally supported by the hinge lower, and an overhang dimension from the top surface is the first portion. A second part smaller than the second part, and an inclined part connecting the first part and the second part by inclining from the lower end of the first part to the lower end of the second part, The inflection point may be provided at an intersection of the inclined portion and the second portion.

(3) In the vehicle body front structure according to the above aspect (2), the first inflection point and the second inflection point coincide with the bending portion of the hinge upper in the longitudinal direction of the hinge upper, and the upper surface is A third inflection point may be provided at an edge opposite to one edge in the vehicle width direction, and the bending portion may be provided on a line connecting the first inflection point and the third inflection point.

(4) In the vehicle body front structure according to the above-mentioned aspect (3), the upper surface is a narrow portion located closer to the shaft portion than the third inflection point and a vehicle width direction than the narrow portion. A wide portion provided with a large width and opposite to the narrow portion with respect to the third inflection point, and a hood attachment portion attached to the hood at the wide portion, and an actuator An actuator abutment that can be pushed up may be provided.

(5) In the vehicle body front structure according to the above aspect (4), the hood attachment portion is provided closer to the narrow portion in the vehicle width direction than the third inflection point, and the actuator contact portion is You may provide in the opposite side to the said narrow part in the vehicle width direction rather than the said 3rd inflexion point.

(6) In the vehicle body front structure according to the above aspect (5), the hood includes a downwardly convex bone portion, and the actuator contact portion is at a position overlapping the vertical wall of the bone portion in the vertical direction It may be provided.

(7) In the vehicle body front structure according to any one of the items (3) to (6), the broken part may extend along the vehicle width direction.

According to the aspect of said (1), the 1st inflexion point which becomes convex in the vehicle width direction one edge of the upper surface of hinge upper was provided. In addition, a second inflection point that is concave is provided on the side surface of the upper hinge. Furthermore, the first inflection point and the second inflection point were made to coincide in the longitudinal direction of the hinge upper. Therefore, when the hinge upper is vertically folded from the line connecting the first inflection point and the second inflection point by the actuator, the side surface of the hinge upper can be folded in the vehicle width direction.
Thus, the hood hinge can be deformed by the actuator without providing a large slit such that the rigidity does not become sufficient at the normal opening and closing of the front hood.

According to the aspect of the above (2), the second inflection point is provided at the intersection where the length dimension of the side surface is largely changed and the stress is concentrated. Thereby, the side surface can be suitably bent at the second inflection point, and the hood hinge is stabilized from the second inflection point (that is, from the line connecting the first inflection point and the second inflection point) Can be bent at

According to the aspect of said (3), the bending part is provided in the line which ties a 1st inflexion point and a 3rd inflexion point. Therefore, the hinge upper can be bent from the line (that is, the bending portion) connecting the first inflection point and the third inflection point. Thereby, the bending point of the hinge upper can be stabilized, and the deformation mode of the hood hinge can be stabilized.

According to the aspect of said (4), the wide part was provided in the upper surface, and the food | hood attachment part and the actuator contact part were provided in the wide part. Thereby, the freedom degree of the layout at the time of providing a hood attachment part and an actuator contact part can be raised.
Further, by providing the wide portion on the top surface, the rigidity of the wide portion is enhanced. An actuator contact portion is provided in the wide portion having high rigidity. Therefore, it is possible to prevent the upper surface from being broken at the wider portion side than the bending portion by the push-up force received from the actuator.

According to the above aspect (5), the hood attachment portion is provided on the narrow side in the vehicle width direction. Thereby, the force at the time of opening and closing of a normal hood can be efficiently supported by a shaft part.
Further, an actuator contact portion is provided on the opposite side to the narrow portion in the vehicle width direction. The actuator contact portion is a portion that has little influence when opening and closing the normal hood. Further, by providing the actuator contact portion at the extended portion in order to enhance the rigidity, it is possible to increase the degree of freedom in layout when providing the actuator contact portion.

According to the above aspect (6), the hood is provided with the bone portion, and the vertical wall of the bone portion and the actuator contact portion are provided at the overlapping position. Thus, the lifting force of the actuator can be supported not only by the hood hinge but also by the bone portion of the hood, and deformation of the hood can be suppressed.

According to the aspect of (7), when the hinge upper portion is broken from the bending portion, the displacement in the vehicle width direction can be prevented from being generated in the shaft portion by the bending portion extending along the vehicle width direction. Thus, the hood can be pushed up without inhibiting the rotation of the upper hinge.

It is a perspective view showing the vehicle body front structure in one embodiment of the present invention. It is a perspective view which shows the food | hood hinge of the vehicle body front structure in one Embodiment of this invention. FIG. 3 is a cross-sectional view showing a state of being broken along the line III-III of FIG. 1 in an embodiment of the present invention. FIG. 2 is a perspective view of the hood hinge of FIG. 1 in an embodiment of the present invention. It is a top view which shows the hinge upper of FIG. 4 in one Embodiment of this invention. It is a perspective view which shows the state which bend | folded the hood hinge of the vehicle body front structure in one Embodiment of this invention by the bending part. It is a side view which shows the state which raised the front hood of the vehicle body front structure in one Embodiment of this invention by the actuator.

An embodiment of the present invention will be described based on the drawings. In the drawings, the arrow FR points to the front of the vehicle, the arrow UP points to the upper side of the vehicle, and the arrow LH points to the left of the vehicle.
In addition, the vehicle body front structure 10 is the structure of substantially left-right symmetry. Therefore, hereinafter, the configuration on the left side will be described, and the description of the configuration on the right side will be omitted.

As shown in FIGS. 1 and 2, the vehicle body front structure 10 includes a front hood 12, a hood hinge 14, and a safety device 16 for an automobile. The front hood 12 has a left rear end 12 a supported by the front hood 12. By moving the front hood 12 up and down with the front hood 12 as a fulcrum, the upper part of the power unit chamber 23 is opened and closed by the front hood 12. The power unit chamber 23 houses power units such as an engine / transmission and a motor.
In a state in which the front hood 12 is closed, a windshield 18 is provided at the rear of the vehicle body of the front hood 12. In addition, a front fender 19 is provided outside the vehicle body of the front hood 12

As shown in FIG. 3, the front hood 12 includes an outer panel 21, an inner panel 22, and a bone portion 24. The outer panel 21 is disposed to face the outside 26 of the vehicle. The inner panel 22 is disposed to face the power unit chamber 23.
The outer panel 21 and the inner panel 22 are overlapped in the vertical direction, and, for example, the peripheral edge 12b of the front hood 12 is integrally connected by hemming. A bone portion 24 is attached between the outer panel 21 and the inner panel 22.

The bone portion 24 has a bottom 31, an outer longitudinal wall 32, an inner longitudinal wall 33, an outer flange 34, and an inner flange 35.
The bottom 31 is attached to the inner panel 22. The outer vertical wall 32 is raised from the outer side of the bottom 31. An inner vertical wall 33 is raised from the inner side of the bottom 31. The bone portion 24 is formed in a U-shaped cross section which is convex downward at the bottom portion 31, the outer vertical wall 32, and the inner vertical wall 33.

An outer flange 34 protrudes outward in the vehicle width direction from the upper side of the outer vertical wall 32. An inward flange 35 projects from the upper side of the inward vertical wall 33 inward in the vehicle width direction. Thus, the bone portion 24 is formed in a hat shape in cross section by the bottom portion 31, the outer vertical wall 32, the inner vertical wall 33, the outer flange 34 and the inner flange 35. That is, the bone portion 24 is a member with high rigidity.
Therefore, by attaching the bone portion 24 to the inner panel 22, the inner panel 22 (i.e., the front hood 12) is reinforced with the bone portion 24.

Referring back to FIGS. 1 and 2, the hood hinge 14 is attached to the left rear end 12 a of the front hood 12. The front hood 12 is openably and closably supported by the vehicle body 11 via a hood hinge 14. The hood hinge 14 is a pop-up hood hinge.
Specifically, the hood hinge 14 includes a hinge lower 37, a hinge upper 38, and a stopper 39. The hinge lower 37 includes a base 41 and a support portion 42.

The base 41 has a front inclined portion 44 and a rear horizontal portion 45. The rear horizontal portion 45 extends substantially horizontally in the longitudinal direction of the vehicle body. The front inclined portion 44 extends downward from the front end of the rear horizontal portion 45 toward the front of the vehicle body. A rear end 45a of the rear horizontal portion 45 and a front end 44a of the front inclined portion 44 are attached to the left side 11a of the vehicle body 11 with a bolt 47 and a nut.
The left side portion 11 a of the vehicle body 11 is a portion provided in the power unit chamber 23 and having high rigidity. Therefore, the base 41 is firmly attached to the left side portion 11 a of the vehicle body 11 by the bolt 47 and the nut. Of the base 41, the support portion 42 is raised upward from the outer side 41a.

The support portion 42 is raised upward from the outer side 45 b of the rear horizontal portion 45 and the rear half of the outer side 44 b of the front inclined portion 44. A rear end portion 38 a of the hinge upper 38 is rotatably supported by the upper end portion 42 a of the support portion 42 via a support shaft (shaft portion) 51. The support shaft 51 extends in the vehicle width direction. A hinge upper 38 is supported on the outer side in the vehicle width direction of the support portion 42.

As shown in FIGS. 4 and 5, the hinge upper 38 includes an upper surface 53 and a side surface 54. The hinge upper 38 is formed in an L-shaped cross section by the upper surface 53 and the side surface 54. The upper surface 53 extends in the vehicle longitudinal direction and in the vehicle width direction when the front hood 12 is closed.
The upper surface 53 has a first inflection point 56, a third inflection point 58, and a broken part 61 (shown by an imaginary line). The first inflection point 56 is provided at an inner edge (one edge in the vehicle width direction) 53 a of the upper surface 53 in the vehicle width direction. The first inflection point 56 is projected so as to be convex outward (in the direction of the arrow A) with respect to the upper surface 53. The third inflection point 58 is provided at the outer edge of the upper surface 53 in the vehicle width direction (the edge opposite to one edge in the vehicle width direction) 53 b.

The bending portion 61 is provided on a line connecting the first inflection point 56 and the third inflection point 58. Here, the first inflection point 56 and the third inflection point 58 are arranged at intervals in the vehicle width direction. A bent portion 61 is provided on a line connecting the first inflection point 56 and the third inflection point 58. Therefore, the hinge upper 38 can be bent from the line connecting the first inflection point 56 and the third inflection point 58 (that is, the bending portion 61).
Thereby, the bending point of the hinge upper 38 can be stabilized, and the deformation mode of the hood hinge 14 can be stabilized.

Further, the bent portion 61 extends along the vehicle width direction so as not to be inclined in the longitudinal direction of the vehicle body. As a result, when the hinge upper 38 is broken from the bending portion 61, the displacement in the vehicle width direction can be prevented from occurring in the support shaft 51. That is, the front hood 12 can be pushed up by bending the hinge upper 38 from the bending portion 61 without inhibiting the rotation of the hinge upper 38.

The upper surface 53 includes a narrow portion 64 and a wide portion 65. The narrow portion 64 extends from a portion corresponding to the support shaft 51 to the first inflection point 56. That is, the narrow portion 64 is located closer to the support shaft 51 than the third inflection point 58.
A wide portion 65 extends from the first inflection point 56 on the extension of the narrow portion 64. That is, the wide portion 65 is provided on the side opposite to the narrow portion 64 with respect to the third inflection point 58. Further, the wide portion 65 is formed to have a width in the vehicle width direction larger than that of the narrow portion 64. The wide portion 65 is provided with a hood attachment portion 67 and an actuator contact portion 68.

The hood attachment portion 67 is a portion attached to the inner panel 22 (see FIG. 3) of the front hood 12. The hood attachment portion 67 is provided closer to the narrow portion 64 in the vehicle width direction than the third inflection point 58. Specifically, the hood attachment portion 67 is provided inward of the third inflection point 58 in the vehicle width direction.
The hood attachment portion 67 is attached to the inner panel 22 of the front hood 12 by a pair of bolts 71 and nuts 72 (see FIG. 3). That is, the hinge upper 38 is attached to the front hood 12 by a pair of bolts 71 and nuts 72.

The actuator contact portion 68 is a portion that is pushed up by the actuator 73 when the actuator 73 of the automobile safety device 16 rises and contacts. The actuator contact portion 68 is provided on the opposite side of the third inflection point 58 in the vehicle width direction to the narrow portion 64. Specifically, the actuator contact portion 68 is provided outside the third inflection point 58 in the vehicle width direction.

As described above, the wide portion 65 is provided on the upper surface 53, and the hood attachment portion 67 and the actuator contact portion 68 are provided on the wide portion 65. Thus, the degree of freedom in layout when the hood attachment portion 67 and the actuator contact portion 68 are provided can be enhanced.
Further, by providing the wide portion 65 on the upper surface 53, the rigidity of the wide portion 65 is enhanced. The actuator contact portion 68 is provided on the wide portion 65 having high rigidity. Accordingly, it is possible to prevent the upper surface 53 from being broken at the wider portion 65 side than the bending portion 61 due to the pushing up force received from the actuator 73.

Further, the hood attachment portion 67 is provided on the narrow portion 64 side in the vehicle width direction. Thereby, the force at the time of opening and closing of the normal front hood 12 can be efficiently supported by the support shaft 51.
In addition, the actuator contact portion 68 is provided on the opposite side of the narrow portion 64 in the vehicle width direction. The actuator contact portion 68 is a portion that has little influence when opening and closing the normal front hood. By providing the actuator contact portion 68 at the extended portion in order to increase the rigidity, it is possible to increase the degree of freedom in layout when the actuator contact portion 68 is provided.

As shown in FIG. 3, the actuator contact portion 68 is provided at a position overlapping the outer vertical wall 32 of the bone portion 24 in the vertical direction. Therefore, the pushing up force F1 of the actuator 73 can be supported by the bone portion 24 of the front hood 12, and the deformation of the inner panel 22 (that is, the front hood 12) can be suppressed.
A side surface 54 extends (extends) downward from the vehicle width direction inner edge 53 a of the upper surface 53.

As shown in FIG. 4, the side surface 54 has a first portion 81, a second portion 82, an inclined portion 83, and a second inflection point 57. The rear end 81 a of the first portion 81 is rotatably supported by the support shaft 51. The first portion 81 has an overhang dimension (length dimension) from the inner edge 53a in the vehicle width direction of the upper surface 53 to the lower end 81b of T1.
The second portion 82 has an overhang dimension (length dimension) from the inner edge 53 a in the vehicle width direction of the upper surface 53 to the lower end 82 a of T 2. The overhanging dimension T2 of the second portion 82 is set smaller than the overhanging dimension T1 of the first portion 81.

The inclined portion 83 is inclined (upwardly) from the front lower end (lower end) 81 c of the first portion 81 to the rear lower end (lower end) 82 b of the second portion 82. That is, the front lower end 81 c of the first portion 81 and the rear lower end 82 b of the second portion 82 are connected by the inclined portion 83.
The second inflection point 57 is provided at the intersection (corner) of the inclined portion 83 and the lower end 82 a of the second portion 82. That is, the second inflection point 57 is a portion which is concave toward the upper side on the side surface 54.

As described above, the side surface 54 is at the second inflection point 57 (that is, the crossing portion) where the stress is concentrated by largely changing the overhang dimension T1 of the first portion 81 and the overhang dimension T2 of the second portion 82. A fold 61 is provided. Thus, the side surface 54 can be suitably bent, and the hinge upper 38 of the hood hinge 14 can be bent in a stable state from the position of the bending portion 61.
Here, the second inflection point 57 and the first inflection point 56 are disposed at the same position in the longitudinal direction of the hinge upper 38 as to the bending portion 61 of the hinge upper 38. In other words, the second inflection point 57 is disposed at a position overlapping the first inflection point 56 and the broken portion 61 in plan view.

As described above, the first inflection point 56 that is convex at one edge in the vehicle width direction of the upper surface 53 of the upper hinge 38 is provided. Furthermore, a second inflection point 57 that is concave is provided on the side surface 54 of the hinge upper 38. In addition, the first inflection point 56 and the second inflection point 57 coincide with the bending portion 61 of the hinge upper 38. Therefore, when the hinge upper 38 is vertically bent from the bending portion 61 by the actuator 73, the side surface 54 can be bent in the vehicle width direction.
Thus, the hood hinge 14 can be deformed by the actuator 73 without providing the hood hinge 14 with a large slit such that the rigidity is insufficient when the front hood 12 is normally opened and closed.

By the way, the hinge upper 38 is provided with a stopper 39. The stopper 39 extends from the narrow portion 64 and the first portion 81 of the hinge upper 38 in a direction inclined away from the wide portion 65 in a downward direction.
The stopper 39 is a stopper for holding the front hood 12 at a position lifted by the actuator 73. That is, when the hood hinge 14 is deformed by the actuator 73 to lift the front hood 12, the tip 39a of the stopper 39 is brought into contact with the front hood 12 to hold the front hood 12 in the lifted position (FIG. 7). See also).

As shown in FIGS. 2 and 6, the automobile safety device 16 includes, for example, a G sensor, an actuator 73, and a control unit. The G sensor is provided, for example, in a front bumper 86 (see FIG. 7) of the vehicle. An actuator 73 is provided in the vicinity of the hood hinge 14.
According to the safety device 16 for an automobile, for example, according to the information of the G sensor and the vehicle speed, when the obstacle 91 having a predetermined weight collides with the front hood 12 at a vehicle speed equal to or higher than the set value The actuator 73 is actuated when it receives an impact.

As the actuator 73, for example, a direct acting actuator including a cylinder 87 and a piston rod 88 is employed. The actuator 73 raises the piston rod 88 by generating high pressure gas inside the cylinder 87. The piston rod 88 ascends and abuts against the actuator contact portion 68, and pushes up the actuator contact portion 68 with the piston rod 88.

Here, the broken portion 61 extends in the vehicle width direction. Therefore, when the hinge upper 38 is broken from the bending portion 61, it is possible to prevent the displacement in the vehicle width direction from occurring in the support shaft 51. Thereby, the front hood 12 can be pushed up smoothly without inhibiting the rotation of the hinge upper 38.

As shown in FIG. 3, the actuator abutment portion 68 is provided below the outer longitudinal wall 32 of the bone portion 24 so as to overlap the outer longitudinal wall 32. Therefore, the push-up force F1 of the piston rod 88 can be supported not only by the hood hinge 14 but also by the bone portion 24 of the front hood 12. Thereby, the deformation of the front hood 12 is suppressed, and the left rear end 12a (see FIG. 7) of the front hood 12 is smoothly lifted by the piston rod 88.

As shown in FIG. 7, a secondary collision occurs in which an obstacle 91 collides with the front hood 12 from above. The left rear end 12 a of the front hood 12 is held lifted by the piston rod 88. In this state, the front hood 12 receives a downward load F2 from the obstacle 91.
By receiving the downward load F2 from the obstacle 91 to the front hood 12, the front hood 12 is deformed downward as indicated by the arrow B by the downward load F2. Thereby, the impact given to the obstacle 91 can be alleviated and the obstacle 91 can be protected.

The technical scope of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the present invention.
For example, in the above embodiment, the first inflection point 56 is provided at the inner edge 53a of the upper surface 53 in the vehicle width direction, and the third inflection point 58 is provided at the outer edge 53b of the upper surface 53 in the vehicle width direction. Not limited to.
As another example, for example, one inflection point 56 is provided at the outer edge in the vehicle width direction of the upper surface 53 (the edge opposite to one edge in the vehicle width direction), and the third inflection point 58 in the vehicle width direction of the upper surface 53 It is also possible to provide it at the inner edge (one edge in the vehicle width direction).

Moreover, although the said embodiment demonstrated the example which provided the 2nd inflexion point 57 in the intersection of the inclination part 83 and the lower end 82a of the 2nd part 82, it does not limit to this. As another example, it is also possible to provide the second inflection point 57 with a slit about the notch (that is, a slit about the recess). The slit is formed to extend from the second inflection point 57 toward the first inflection point 56. As a result, the side surface 54 (i.e., the bent portion 61) can be bent more suitably, and the hinge upper 38 of the hood hinge 14 can be bent in a more stable state from the position of the bent portion 61.

Furthermore, in the embodiment described above, the example in which the actuator abutment portion 68 is provided to overlap the outer vertical wall 32 of the bone portion 24 has been described, but the present invention is not limited thereto. As another example, it is also possible to arrange the actuator contact portion 68 so as to overlap the inner vertical wall 33 of the bone portion 24, for example.

In addition, it is possible to replace the components in the above-described embodiment with known components as appropriate without departing from the spirit of the present invention, and the above-described modifications may be combined as appropriate.

According to the vehicle body front structure described above, application to a car equipped with a hood or the like is possible.

10: body front structure 11: body 12: front hood (hood)
14: Hood hinge 24: Bone 32: Outer vertical wall (vertical wall)
33: inner vertical wall 37: hinge lower 38: hinge upper 51: support shaft (shaft)
53: Upper surface 53a: inner edge in the vehicle width direction (one edge in the vehicle width direction)
53b ... outer edge in the vehicle width direction (edge opposite to one edge in the vehicle width direction)
54: side 56: first inflection point 57: second inflection point 58: third inflection point 61: broken portion 64: narrow portion 65: wide portion 67: hood attachment portion 68: actuator contact portion 73: actuator 81: first portion 81b: lower end of first portion 81 c: front lower end of first portion (lower end of first portion)
82: second part 82a: lower end of second part 82b: lower rear end of second part (lower end of second part)
83 ...... Inclined part

Claims

A vehicle front portion provided with a pop-up hood hinge for openably and closably supporting a hood,
The hood hinge includes a hinge lower attached to a vehicle body and a hinge upper attached to the hood.
The hinge upper includes an upper surface extending in the front-rear direction and the vehicle width direction, and a side surface extending downward from one edge of the upper surface in the vehicle width direction,
A first inflection point convex outward with respect to the upper surface at one edge in the vehicle width direction of the upper surface and a second inflection point concave upward in the side surface with the longitudinal direction of the hinge upper Match in direction,
Front body structure characterized by
Said side is
A first portion provided on a shaft portion side pivotally supported by the hinge lower;
A second part having a projection dimension from the upper surface smaller than the first part;
And an inclined portion connecting the first portion and the second portion by inclining from the lower end of the first portion to the lower end of the second portion,
The second inflection point is provided at an intersection of the inclined portion and the second portion.
The vehicle body front structure according to claim 1, characterized in that:
The first inflection point and the second inflection point coincide with the bending portion of the upper hinge in the longitudinal direction of the upper hinge,
The upper surface is provided with a third inflection point at an edge opposite to the vehicle width direction edge,
The broken portion is provided on a line connecting the first inflection point and the third inflection point.
The vehicle body front structure according to claim 2, characterized in that:
The upper surface is
A narrow portion located closer to the shaft than the third inflection point;
And a wide portion provided on the side opposite to the narrow portion with respect to the third inflection point and having a width dimension in the vehicle width direction larger than that of the narrow portion;
The wide portion is provided with a hood attachment portion attached to the hood, and an actuator contact portion pushed up by an actuator.
The vehicle body front structure according to claim 3, characterized in that:
The hood attachment portion is provided closer to the narrow portion in the vehicle width direction than the third inflection point.
The actuator contact portion is provided on the opposite side to the narrow portion in the vehicle width direction than the third inflection point.
The vehicle body front structure according to claim 4,
The hood comprises a downwardly convex bone portion,
The actuator contact portion is provided at a position overlapping the vertical wall of the bone portion in the vertical direction,
The vehicle body front structure according to claim 5, characterized in that:
The broken portion extends along the vehicle width direction.
The vehicle body front structure according to any one of claims 3 to 6, characterized in that