JP5815260B2 - Shock-absorbing structure on the side of the vehicle body - Google Patents

Description

  The present invention relates to a shock absorbing structure for a vehicle body side portion, and more particularly to a shock absorbing structure for a vehicle body side portion provided on a center pillar having an upper end coupled to a side rail and a lower end coupled to a side sill.

  In general, a center pillar disposed on the side of a vehicle body has an upper end coupled to a side rail and a lower end coupled to a side sill to support a roof and a door, and loads from the side rail, side sill, etc. It is comprised so that it may carry out dispersion | distribution transmission to another structural member via. Various techniques have been proposed, such as increasing the rigidity of the center pillar, from the viewpoint of preventing such a center pillar from entering the vehicle interior due to the input of impact load during a side collision and affecting passengers. .

  Patent Document 1 discloses a center pillar structure in which a fragile portion is provided at the lower part of the center pillar in the vertical direction of the vehicle body. The center pillar structure of Patent Document 1 will be described with reference to FIG.

  8A is a diagram for explaining the outline of the center pillar structure, FIG. 8B is a sectional view taken along the line BB of FIG. 8A, and FIG. 8C is a diagram of FIG. 8A. It is CC sectional view taken on the line. As shown in the figure, the center pillar structure 100 is configured such that the upper end is connected to the side rail 110 and the lower end is connected to the sill 111. The center pillar structure 100 is configured by overlapping a center pillar inner 101 and a center pillar outer 102. The center pillar structure 100 extends from the upper portion of the center pillar structure 100 in the vehicle body vertical direction to the substantially central portion of the center pillar structure 100. A seat belt reinforcement 103 is disposed between the inner 101 and the center pillar outer 102.

  A striker patch 104 is disposed between the center pillar inner 101 and the center pillar outer 102 via a gap from the lower end of the seat belt reinforcement 103. Further, the striker patch 104 extends in the vertical direction of the vehicle body via the gap from the lower end of the striker patch 104. A door lower hinge reinforcement 105 is disposed between the center pillar inner 101 and the center pillar outer 102 from the lower part to the lower end side of the center pillar structure 100.

  The center pillar structure 100 is stiffened by the seat belt reinforcement 103, the striker patch 104, and the door lower hinge reinforcement 105, and a fragile portion P1 is formed by a gap between the lower end of the seat belt reinforcement 103 and the striker patch 104. The fragile portion P <b> 2 is formed by the gap between the lower end of the striker patch 104 and the door lower hinge reinforcement 105.

  As a result, as shown in FIG. 9, when an impact load F is input due to a collision from the side of the vehicle body, the lower part of the center pillar structure 100 is directed toward the vehicle interior IN via the fragile portion P2 that is the load input point. Inclined and bent, and the upper portion of the center pillar structure 100 is pulled toward the vehicle interior IN by being pulled by the load input to the fragile portion P2. With the displacement of the upper part of the center pillar structure 100 toward the vehicle interior direction IN, the door beam 120 also enters the vehicle interior direction IN. That is, the center pillar structure 100 can be bent at the fragile portions P1 and P2 to prevent the center pillar structure 100 and the door beam 120 from entering the vehicle interior to some extent.

JP-A-7-61368

  According to Patent Document 1, although the center pillar structure 100 and the door beam 120 can be prevented from entering the vehicle interior to some extent, the upper part of the center pillar structure 100 is pulled by the load input to the fragile portion P2, and the vehicle is Since the door beam 120 enters the vehicle interior while being displaced toward the interior IN, there is a concern that the safety of passengers may be affected. That is, from the viewpoint of improving the safety of the occupant at the time of a vehicle body side collision, the displacement of the upper part of the center pillar structure 100 toward the vehicle interior IN is suppressed and the door beam 120 enters the vehicle interior as much as possible. Control is required.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide an impact buffering structure for a vehicle body side portion that ensures the safety of an occupant when an impact load is input due to a collision from the vehicle body side. is there.

According to a first aspect of the present invention for solving the above-described problems, a shock absorbing structure for a side portion of a vehicle body includes a front door for a vehicle in which a door beam extending in a longitudinal direction of the vehicle body is provided, and extends in a vertical direction of the vehicle body. A vehicle body side shock absorbing structure comprising a center pillar in which the end of the door beam overlaps when the vehicle front door is closed, and the center pillar is formed by a pillar inner located on the inner side of the vehicle body and a pillar outer located on the outer side of the vehicle body. And provided on the inner side surface of the pillar outer, extending from a height position above the door beam to an intermediate height position of the center pillar below the door beam, and an end portion of the door beam in a side view A reinforcing panel that reinforces the overlapping region; and a lower end of the reinforcing panel and the pillar inner that is opposed to the lower end, and the reinforcing panel A reinforcing leg for holding the distance between the serial pillar inner, provided through the lower portion with a predetermined space of the reinforcing panel to the lower position of the reinforcement panel to the inner surface of the pillar outer panel, a predetermined length vertically A lower reinforcement that is provided between a lower reinforcing panel that extends to the upper end of the lower reinforcing panel and the pillar inner that opposes the upper end, and maintains a separation distance between the lower reinforcing panel and the pillar inner And a leg portion .

According to the present invention, the center pillar is provided with the reinforcing panel extending from the upper side of the door beam to the middle height position of the center pillar on the lower side of the door beam, and the reinforcing leg provided at the lower end thereof is the reinforcing panel. Since the separation distance between the center pillar and the pillar inner is maintained, the rigidity on the upper side from the middle height position of the center pillar is improved. Therefore, when an impact load is input through the vehicle door to an intermediate height position of the center pillar where an impact load from the side of the vehicle body due to another vehicle body is easily input, the portion is bent and deformed by the impact load. On the other hand, in the upper part from the middle height position of the center pillar, the separation distance between the pillar inner and the pillar outer is maintained by the reinforcing leg portion.

As a result, the upper part of the center pillar is pulled downward by the action of the impact load input at the intermediate height position of the center pillar, and the center pillar is greatly suppressed from being displaced toward the vehicle interior. As a result, the door beam is prevented from being displaced toward the vehicle interior and entering the vehicle interior, so that it is possible to improve occupant safety during a side collision.
Further, since the lower reinforcing panel is provided from the lower side of the center pillar to an intermediate height position separated from the lower end portion of the reinforcing panel, and the lower reinforcing leg portion maintains the separation distance between the pillar inner and the pillar outer, The rigidity of the center pillar on the lower side from the intermediate height position can be improved.

According to a second aspect of the present invention, there is provided a shock absorbing structure for a vehicle body side portion according to the first aspect, wherein the reinforcing leg portion is bent from a lower end portion of the reinforcing panel to reinforce the reinforcing panel. It is characterized by being formed integrally with.

According to the present invention, the reinforcing leg portion is bent from the lower end portion of the reinforcing panel and is integrally formed with the reinforcing panel. Therefore, it is possible to easily provide the center pillar without separately providing the reinforcing leg portion. Become.

  According to a third aspect of the present invention, there is provided the shock absorbing structure for a vehicle body side portion according to the first or second aspect, wherein the reinforcing leg has an end portion that is in contact with the pillar inner. It is characterized by having a flange formed by bending.

  According to the present invention, when an impact load is input from the side of the vehicle body, the impact load is transmitted to the pillar inner via the flange. Therefore, the deformation of the pillar inner portion transmitted by the flange is suppressed, and the impact load is suppressed. Can be efficiently absorbed.

  Accordingly, it is possible to suppress the displacement of the upper part of the center pillar due to the stiffening of the upper part of the center pillar by the reinforcing panel and the reinforcing leg, and to suppress the significant collapse of the lower part of the center pillar. It is possible to reduce the impact on the occupant during a vehicle body side collision.

  According to the shock absorbing structure for the vehicle body side portion according to the present invention, the upper side from the middle height position of the center pillar is stiffened by the reinforcing panel and the reinforcing leg portion, so that the impact load from the side is input. When an impact load is input at an intermediate height position of the center pillar that is easy to reach, the upper part from the intermediate height position of the center pillar is moved downward by the action of the impact load input at the intermediate height position of the center pillar. The center pillar is restrained from being greatly displaced toward the passenger compartment by being pulled. Accordingly, it is possible to suppress the displacement of the door beam toward the interior of the vehicle interior at the time of the side collision, and it is possible to improve the safety of the occupant at the time of the side collision.

It is a figure explaining the outline of the vehicle body to which the shock absorbing structure of the vehicle body side part of this Embodiment is applied. It is the II-II sectional view taken on the line of FIG. It is a principal part perspective view of the shock buffering structure of the vehicle body side part which concerns on this Embodiment. It is the IV-IV sectional view taken on the line of FIG. It is the VV sectional view taken on the line of FIG. It is a figure explaining the outline of the shock absorbing structure which concerns on this Embodiment. It is a figure explaining the effect | action of an impact buffer structure when the impact load is input into the vehicle body side part by the side collision. It is a figure explaining the outline of the conventional center pillar structure. It is a figure explaining the effect | action of the conventional center pillar structure when an impact load is input into the center pillar structure by the side collision.

  Next, embodiments of the present invention will be described with reference to the drawings. 1 to 7, an arrow line H indicates a vehicle body upward direction, an arrow line L indicates a vehicle body downward direction, an arrow line IN indicates a vehicle interior direction, an arrow line OUT indicates a vehicle exterior direction, an arrow line F indicates a vehicle body front direction, An arrow R indicates the rear of the vehicle body.

  First, based on FIG. 1, the outline of the vehicle body 1 to which the vehicle body side shock absorbing structure of the present embodiment is applied will be described. As shown in the drawing, the vehicle body 1 has a front door opening 2 formed on the side thereof. A side sill 10 extends along the vehicle body longitudinal direction at the lower edge of the front door opening 2, and a side rail 11 extends along the vehicle body longitudinal direction at the upper edge of the front door opening 2. A center pillar 20 having an upper end coupled to the side rail 11 and a lower end coupled to the side sill 10 and extending in the vertical direction is disposed at the rear end of the front door opening 2 on the vehicle body rear side. A front door (not shown) is attached to the front door opening 2 so as to be openable and closable with the center pillar 20 as a rear edge of the front door opening 2.

  Next, an outline of the shock-absorbing structure for the vehicle body side portion according to the present embodiment will be described. 2 is a cross-sectional view taken along the line II-II in FIG. 1, and FIG. 3 is a perspective view of a main part of the shock absorbing structure for the vehicle body side portion according to the present embodiment. As shown in the figure, the front door (not shown) is formed having a door upper beam 120 extending in the longitudinal direction of the vehicle body and a door lower beam 121 extending in the longitudinal direction of the vehicle body below the door upper beam 120. In the closed state of the front door, the rear end portion 120a of the door upper beam 120 overlaps the center pillar 20.

  The center pillar 20 includes a pillar inner 21 and a pillar outer 22 and a pillar reinforcement 23 that reinforces the position of the center pillar 20 overlapping the rear end portion 120a of the door upper beam 120. An upper shock absorbing structure 30 is formed at a position overlapping the rear end portion 120a of the door upper beam 120 in the center pillar 20, and a lower shock absorbing structure 60 is formed through a space from the upper shock absorbing structure 30.

  The upper shock absorbing structure 30 is provided on the inner side surface of the pillar outer 22, in this embodiment, on the inner side surface of the pillar reinforcement 23, and from the upper position of the door upper beam 120 in the vertical direction of the vehicle body of the pillar reinforcement 23 to the center pillar. An upper doubler 40 is provided as a reinforcing panel extending to an intermediate height position, that is, the height position of the upper end of the striker 22e provided in the center pillar 20 in the present embodiment.

  Further, the upper shock absorbing structure 30 is constructed between the lower end portion of the upper doubler 40 and the pillar inner 21 opposed to the lower end portion, and between the pillar inner 21 and the pillar outer 22, particularly in this embodiment, the pillar inner 21. And an upper separator 50 serving as a reinforcing leg for maintaining a separation distance between the first and second pillar reinforcements 23. In the present embodiment, upper separator 50 is bent from the lower end portion of upper doubler 40 and is integrally formed in a substantially L shape in sectional view.

  The lower shock absorbing structure 60 is provided on the inner side surface of the pillar outer 22, in this embodiment, on the inner side surface of the pillar reinforcement 23, below the upper doubler 40, with a predetermined distance from the lower side of the center pillar 20. A lower doubler 70 serving as a lower reinforcing panel extending to the intermediate height position of the pillar, that is, the height position of the lower end of the striker 22e in the present embodiment is provided.

  Further, the lower shock absorbing structure 60 is constructed between the upper end portion of the lower doubler 70 and the pillar inner 21 opposed to the upper end portion, and between the pillar inner 21 and the pillar outer 22, particularly in this embodiment, the pillar inner 21 and the pillar. A lower separator 80 serving as a lower reinforcing leg that holds a separation distance from the reinforcement 23 is provided. In the present embodiment, the lower separator 80 is bent from the upper end of the lower doubler 70 and is integrally formed in a substantially L shape in cross section.

  Next, a specific configuration of each part of the shock absorbing structure for the vehicle body side portion according to the present embodiment will be described.

  First, the center pillar 20 will be described. 4 is a sectional view taken along line IV-IV in FIG. 2, and FIG. 5 is a sectional view taken along line VV in FIG. As shown in the figure, the pillar inner 21 includes an inner base portion 21a extending in the vertical direction of the vehicle body, both side portions 21b formed by bending from both ends of the inner base portion 21a toward the vehicle exterior OUT side, and from the both side portions 21b to the vehicle longitudinal direction. Are integrally formed in a substantially hat-shaped cross section.

  The pillar reinforcement 23 extends in the vertical direction of the vehicle body and faces the inner base portion 21a of the pillar inner 21. The reinforcement base portion 23a and both side portions formed by bending both ends of the reinforcement base portion 23a toward the vehicle interior IN side. 23b, both sides 23b are bent in the longitudinal direction of the vehicle body, and have a mounting flange 23c that joins with the mounting flange 21c of the pillar inner 21, and is formed in a substantially hat-shaped cross section.

  The pillar outer 22 extends in the vertical direction of the vehicle body and bends from the vehicle body rearward R side of the outer base portion 22a and the outer base portion 22a facing the reinforcement base portion 23a of the pillar reinforcement 23 toward the vehicle exterior outward OUT. The rear quarter continuous portion 22b is formed, and the outer base portion 22a is bent from the vehicle body front F side toward the vehicle interior IN. The side portion 22c is bent from the side portion 22c to the vehicle body front F side. And is integrally formed with a mounting flange 22d that joins the mounting flange 23c of the pillar reinforcement 23. A striker 22e that locks the front door is provided on the outer surface of the side portion 22c.

  A rear quarter panel (not shown) continuously extends from the rear quarter continuous portion 22b of the pillar outer 22 to the rear of the vehicle body 1 and extends in the vehicle longitudinal direction along the lower end of the pillar outer 22 and the lower end of the rear quarter panel. A side panel outer (not shown) is integrally formed by the pillar outer 22, the rear quarter panel, and the side sill outer.

  Thus, the pillar inner 21 and the pillar outer 22 form the center pillar 20 having a hollow closed cross-sectional structure extending in the vehicle body vertical direction, and the pillar inner 21 and the pillar reinforcement 23 are overlapped to extend in the vehicle body vertical direction. A hollow closed cross-section structure is further formed to reinforce the center pillar 20.

  FIG. 6 is a diagram for explaining the outline of the upper shock absorbing structure 30 and the lower shock absorbing structure 60. As shown in FIGS. 6, 2, and 3, the upper shock absorbing structure 30 includes an upper doubler 40 and an upper separator 50. The upper doubler 40 is disposed on the inner surface of the pillar reinforcement 23 so as to extend in the vertical direction of the pillar reinforcement 23, and has a plate-like doubler base having a shape following the inner surface of the reinforcement base 23a of the pillar reinforcement 23. 41.

  The doubler base 41 overlaps and opposes the rear end 120a of the door upper beam 120 in the closed state of the front door and extends from the upper position of the door upper beam 120 to the height position of the upper end of the striker 22e. . Further, the upper doubler 40 has doubler mounting flanges 42 which are formed by being bent from both side ends of the doubler base portion 41 toward the vehicle interior IN and along the both side portions 23 b of the pillar reinforcement 23.

  The upper separator 50 includes a plate-like separator base 51 that is bent and extended from the lower end of the upper doubler 40 in the vehicle body downward direction L toward the vehicle inner side IN toward the pillar inner 21 side. The separator base 51 has a plurality of beads 51a in the extending direction, and is formed in a concave cross section along the bead 51a, so that the strength of the separator base 51 is improved.

  Further, the upper separator 50 has an abutting flange 52 formed by bending a tip portion bent toward the vehicle interior direction IN along the inner base portion 21a of the pillar inner 21 toward the vehicle body lower side L. Further, the upper separator 50 has separator mounting flanges 53 that are formed by being bent from both side ends of the separator base 51 toward the vehicle body upper side H and along the both side portions 23 b of the pillar reinforcement 23.

  In the upper shock absorbing structure 30 having the above-described configuration, the doubler base portion 41 of the upper doubler 40 is overlapped with the inner side surface of the reinforcement base portion 23 a, and the doubler mounting flange 42 is overlapped with the inner side surfaces of the both side portions 23 b of the pillar reinforcement 23. At the same time, the contact flange 52 of the upper separator 50 is brought into contact with the inner base portion 21a of the pillar inner 21, and the separator mounting flange 53 is overlapped with the inner side surfaces of both side portions 23b of the pillar reinforcement 23 by spot welding or the like. Combined. When the contact flange 52 contacts the pillar inner 21, the hollow closed cross-sectional structure extending in the vehicle body vertical direction formed by the pillar inner 21 and the pillar reinforcement 23 is divided in the vehicle vertical direction.

  The lower shock absorbing structure 60 is configured with an interval from the upper shock absorbing structure 30. The lower shock absorbing structure 60 includes a lower doubler 70 and a lower separator 80. The lower doubler 70 is disposed below the upper separator 50 and spaced from the upper doubler 40 across the inner surface of the pillar reinforcement 23 in the vertical direction of the pillar reinforcement 23, and on the inner surface of the pillar reinforcement 23. It has a plate-like doubler base 71 having a shape following the front F side of the vehicle body.

  The doubler base 71 is formed extending from the lower side of the center pillar 20 to the height position of the lower end of the striker 22e. Further, the lower doubler 70 has doubler mounting flanges 72 that are formed by bending from the end of the doubler base portion 71 on the vehicle body front F side toward the vehicle interior IN and along both side portions 23 b of the pillar reinforcement 23.

  The lower separator 80 has a plate-shaped separator base 81 that is bent and extended from the upper end of the lower doubler 70 in the vehicle body upward direction H toward the vehicle interior IN toward the pillar inner 21 side. The separator base 81 has a plurality of beads 81a in the extending direction, and is formed in a cross-sectional convex shape along the bead 81a, so that the strength of the separator base 81 is improved.

  Further, the lower separator 80 has a contact flange 82 formed by bending a front end portion bent toward the vehicle interior direction IN toward the vehicle body upper direction H. Further, the lower separator 80 has separator mounting flanges 83 that are formed by bending from both side ends of the separator base 51 toward the vehicle body downward direction L and extend along both side portions 23 b of the pillar reinforcement 23.

  In the lower shock absorbing structure 60 having the above-described configuration, the doubler base 71 of the lower doubler 70 is overlapped with the inner surface of the reinforcement base 23a, and the doubler mounting flange 72 is overlapped with the inner surfaces of both sides 23b of the pillar reinforcement 23. At the same time, the contact flange 82 of the lower separator 80 is brought into contact with the inner base portion 21a of the pillar inner 21, and the separator mounting flange 83 is overlapped with the inner side surfaces of both side portions 23b of the pillar reinforcement 23 by spot welding or the like. Combined. When the contact flange 82 contacts the pillar inner 21, the hollow closed cross-sectional structure extending in the vehicle body vertical direction formed by the pillar inner 21 and the pillar reinforcement 23 is divided.

  Thus, the upper impact buffer structure 30 and the lower impact buffer structure 60 are disposed on the inner surface of the pillar reinforcement 23 so that the upper separator 50 and the lower separator 80 are opposed to each other with a space therebetween. The distance between the upper separator 50 and the lower separator 80 is set as an impact load input point P at which an impact load is input when another vehicle body collides with the vehicle body 1 from the side.

  Next, the operation of the center pillar 20 when another vehicle body or the like collides from the side of the vehicle body 1 and an impact load is input to the center pillar 20 will be described with reference to FIG. In FIG. 7, the illustration of the pillar outer 22 is omitted for simplification of the drawing.

  As shown in FIG. 7A, when another vehicle body M collides from the side of the vehicle body 1, the impact load input point P set at the interval between the upper separator 50 and the lower separator 80 is set via the front door. An impact load F is input.

  When the impact load F is input to the impact load input point P, as shown in FIG. 7B, the pillar outer 22 at the impact load input point P is bent and deformed toward the vehicle interior IN via the front door. . At this time, the upper doubler 40 extends from the upper position of the door upper beam 120 to the height position of the upper end of the striker 22e, and the upper separator 50 extends from the lower end of the upper doubler 40 in the vehicle body downward direction L toward the vehicle interior IN. The pillar outer 22 is bent and extended toward the pillar inner 21 side, and the upper part from the impact load input point P of the center pillar 20 is stiffened. Therefore, the pillar outer 22 is bent and deformed at the impact load input point P by the impact load F. Even so, transmission of the impact load F upward from the impact load input point P is blocked. As a result, the upper portion of the pillar outer 22 is greatly restrained from being displaced toward the vehicle interior IN side by being pulled by the action of the impact load F input to the impact load input point P. As a result, the door upper beam 120 is prevented from being displaced toward the vehicle interior IN side and entering the vehicle interior. Therefore, it is possible to improve the safety of the occupant by reducing the injury value of the occupant, particularly the chest injury value at the time of the vehicle body side collision.

  Since the contact flange 52 of the upper separator 50 is in contact with the inner base portion 21 a of the pillar inner 21, the impact load F input from the impact load input point P can be efficiently transmitted to the pillar inner 21. Therefore, the impact load F input to the impact load input point P can be efficiently interrupted. As a result, the separation distance between the pillar inner 21 and the pillar reinforcement 23 is maintained, that is, the hollow closed cross-sectional structure formed by the pillar inner 21 and the pillar reinforcement 23 is retained, and the vehicle interior direction IN side of the upper portion of the pillar outer 22 is maintained. The displacement to can be greatly suppressed.

  On the other hand, the lower separator 80 in the lower shock absorbing structure 60 is bent and extended from the pillar reinforcement 23 side to the pillar inner 21 side, and the contact flange 82 is in contact with the inner base portion 21a of the pillar inner 21. The lower rigidity of the center pillar 20 is ensured. Therefore, even if another vehicle body M collides from the side of the vehicle body 1 and the impact load F is input to the impact load input point P, the separation distance between the pillar inner 21 and the pillar reinforcement 23 is maintained. As a result, the collapse of the hollow closed cross-section structure by the pillar inner 21 and the pillar reinforcement 23 on the lower side of the center pillar 20 can be suppressed, and the door lower beam 121 is displaced toward the vehicle interior IN side and enters the vehicle interior. Is suppressed. Therefore, the safety of the occupant can be improved by reducing the injury value of the occupant at the time of a vehicle body side collision, particularly the injury value of the lower back.

  Therefore, by stiffening the upper part from the impact load input point P of the center pillar 20, the displacement of the upper part of the pillar outer 22 toward the vehicle interior side is suppressed, and the lower part from the impact load input point P of the center pillar 20 is suppressed. By stiffening the side portion, significant crushing of the lower side of the center pillar 20 is suppressed, and it becomes possible to further improve the safety of the occupant during a side collision.

  The upper separator 50 can be simply formed integrally with a substantially L-shaped cross section by bending the lower end of the upper doubler 40. Therefore, it is possible to suppress the upper portion of the center pillar 20 from being displaced toward the vehicle interior IN side with a simple configuration. Similarly, the lower separator 80 can be simply formed integrally in a substantially L-shaped cross section by bending the upper end portion of the lower doubler 70. Accordingly, it is possible to suppress a significant collapse of the lower portion of the center pillar 20 with a simple configuration.

  In addition, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the meaning of invention. In the above embodiment, the case where the upper doubler 40 and the upper separator 50 are integrally formed and the lower doubler 70 and the lower separator 80 are integrally formed has been described as an example. However, the upper doubler 40 and the upper separator 50 are The lower doubler 70 and the lower separator 80 are formed as separate bodies, and the upper doubler 40 and the upper separator 50 are disposed close to each other on the inner surface of the pillar reinforcement 23. The lower doubler 70 The effect similar to that of the above-described embodiment can also be obtained by arranging the lower separator 80 and the lower separator 80 close to each other on the inner surface of the pillar reinforcement 23.

1 Car body 2 Front door opening 10 Side sill 20 Center pillar 21 Pillar inner 22 Pillar outer 23 Pillar reinforcement 23a Reinforce base 30 Upper shock absorbing structure 40 Upper doubler (reinforcement panel)
41 Doubler base 50 Upper separator (reinforcement leg)
51 Separator base 52 Contact flange (flange)
60 Lower shock absorbing structure 70 Lower doubler (lower reinforcing panel)
71 Doubler base 80 Lower separator (lower reinforcement leg)
81 Separator base 120 Door upper beam (door beam)
121 Door lower beam P Impact load input point F Impact load

Claims (3)

A vehicle front door having a door beam extending in the longitudinal direction of the vehicle body, and a center pillar extending in the vertical direction of the vehicle body and overlapping with an end of the door beam when the vehicle front door is closed, In the shock-absorbing structure of the vehicle body side part formed by the pillar inner located on the inner side of the vehicle body and the pillar outer located on the outer side of the vehicle body,
Provided on the inner side surface of the pillar outer, extends from a height position above the door beam to an intermediate height position of the center pillar below the door beam, and overlaps an end portion of the door beam in a side view. A reinforcing panel to reinforce the area;
A reinforcing leg provided between a lower end of the reinforcing panel and the pillar inner facing the lower end to maintain a separation distance between the reinforcing panel and the pillar inner;
A lower reinforcing panel provided on the inner surface of the pillar outer at a lower position of the reinforcing panel at a predetermined distance from a lower end of the reinforcing panel, and extending in a vertical direction by a predetermined length;
A lower reinforcing leg provided between the upper end of the lower reinforcing panel and the pillar inner facing the upper end to maintain a separation distance between the lower reinforcing panel and the pillar inner;
A shock-absorbing structure for a vehicle body side portion characterized by comprising: The reinforcing leg is
The shock absorbing structure for a vehicle body side portion according to claim 1, wherein the shock absorbing structure is formed integrally with the reinforcing panel by bending from a lower end portion of the reinforcing panel. The end on the pillar inner side of the reinforcing leg is
The shock absorbing structure for a vehicle body side portion according to claim 1 or 2, further comprising a flange formed by bending the end portion.

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