JP4411597B2 - Car body side structure - Google Patents

Description

  The present invention relates to a vehicle body side structure, and more particularly to a vehicle body structure under a center pillar of a vehicle.

  Conventionally, as a vehicle body structure under a center pillar of an automobile, a structure as disclosed in Japanese Patent Application Laid-Open No. 2000-247258 has been proposed from the viewpoint of improving rigidity and component yield. FIG. 9 shows a conventional structure according to this kind of technology. As shown in FIG. 9, the side sill strength extension 100 (reinforcing member that reinforces the pillar portion and the side sill portion) in the conventional structure is disposed so as to connect the side sill strength 101 and the door hinge reinforcement 102 to each other, and further has an upper end thereof. The portion 100a is extended to the pillar inner panel 103 and coupled. Thus, the strength of the center pillar portion 105 composed of the pillar inner panel 103 and the pillar outer panel 104 is improved by connecting the door hinge reinforcement 102 and the pillar inner panel 103 via the side sill strength extension 100. In FIG. 9, reference numeral 106 denotes a door hinge mounting portion.

On the other hand, regarding the vehicle body structure under the center pillar of an automobile, many structures have been proposed so far that the center pillar portion can be prevented from being bent near the belt line (for example, Japanese Patent Application Laid-Open No. 2002-347655, Japanese Patent Application Laid-Open 9-254729). As an example of this type of structure, an intensity change point is provided at the lower portion α (see FIG. 1) of the center pillar portion 1 and when an excessive impact force is applied to the side of the vehicle body, By inducing ideal deformation starting from the lower part α (see FIG. 1) of the center pillar part 1, the impact energy is absorbed and the center pillar part 1 bends in the vicinity of the belt line β (see FIG. 1). This prevents the center pillar portion 1 from entering the vehicle interior.
JP 2000-247258 A JP 2002-347655 A JP-A-9-254729

  However, in the vehicle body structure disclosed in Japanese Patent Laid-Open No. 2000-247258, the strength of the center pillar portion 1 can be improved by connecting the door hinge reinforcement 102 and the pillar inner panel 103 to each other. On the other hand, there is a problem that the side sill strength extension 100 increases in size and causes an increase in weight.

  Further, the vehicle body structure described in Japanese Patent Application Laid-Open No. 2000-247258 has the following problems. That is, in order to induce ideal deformation starting from the lower portion α of the center pillar portion 1 when an excessive impact force is applied to the side of the vehicle body, the door hinge reinforcement 102 is made of a high strength steel plate or the like. When the side sill strength extension 100 is made of a relatively low strength material, the greater the difference in strength between the door hinge reinforcement 102 and the side sill strength extension 100, the greater the side sill strength extension. It is easy to induce 100 deformations. However, if this is done, stress concentrates near the lower trim line γ (see FIG. 9) of the door hinge reinforcement 102, and the side sill strength extension 100 may break from the trim line γ as a starting point. is there. Therefore, there is a problem that it is difficult to make a large difference in strength between the door hinge reinforcement 102 and the side sill strength extension 100, and it is difficult to induce ideal deformation.

  The present invention has been made in view of such problems, the purpose of which can sufficiently ensure the strength of the center pillar portion without increasing the size and weight of the reinforcing member, The body of an automobile that can induce ideal deformation for absorbing impact energy starting from the lower part of the center pillar when excessive impact force is applied to the side of the vehicle body. It is to provide a side structure.

In order to achieve the above object, in the present invention, a side body is constituted by a side body outer panel and a side body inner panel, and a pillar portion and a side sill portion of the side body are provided with a pillar portion reinforcing ring and a side sill portion reinforcing link. In a vehicle body side structure of an automobile equipped with a reinforcement, a first reinforcing member for reinforcing the pillar body and the side sill portion is provided in the side body, and a lower end portion of the first reinforcing member is used for side sill portion reinforcement. And a second upper portion of the first reinforcing member is coupled to the door hinge reinforcement, and a second wrap portion is formed between the first reinforcing member and the door hinge reinforcement. A reinforcing member is provided.
In the present invention, the second reinforcing member is disposed so as to cover at least a part of the wrap portion, and the trim line on the lower end side of the second reinforcing member is arranged on the lower end side of the door hinge reinforcement. It is arranged below the trim line.
In the present invention, the trim line on the upper end side of the first reinforcing member is arranged at a position directly below the door hinge mounting portion provided in the door hinge reinforcement.
In the present invention, the first reinforcing member is disposed between the second reinforcing member and the door hinge reinforcement, and the door hinge reinforcement, the first reinforcing member, and The three members of the second reinforcing member are coupled together.
In the present invention, the second reinforcing member is preliminarily assembled as a part of a side sill strength component installed between the side body inner panel and the side body outer panel in the side sill portion. .
In the present invention, a side body is constituted by a side body inner panel and a side body outer panel, and a pillar portion and a side sill portion of the side body are provided with reinforcements for reinforcing pillar portions and side sill portions. In the vehicle body side structure, a lower end portion of a door hinge reinforcement that reinforces the pillar portion is coupled to a reinforcement for reinforcing a side sill portion, and a first reinforcing member is provided inside the door hinge reinforcement, A second reinforcement that extends a lower end portion of the first reinforcing member to a position directly below a door hinge mounting portion provided in the door hinge reinforcement and wraps at least a part of the lower end of the first reinforcing member. A member is provided.
In the present invention, the second reinforcing member is arranged so as to cover at least a part of the wrap portion, and the trim line on the lower end side of the second reinforcing member is arranged on the lower end side of the first reinforcing member. It is arranged below the trim line.
According to the present invention, the door hinge reinforcement is disposed between the first reinforcing member and the second reinforcing member, and the first reinforcing member, the door hinge reinforcement, and The three members of the second reinforcing member are coupled together.
In the present invention, the second reinforcing member is a member that is preliminarily assembled as a part of the door hinge reinforcement.

  According to the first aspect of the present invention, the side body is provided with a first reinforcing member for reinforcing the pillar portion and the side sill portion, and the lower end portion of the first reinforcing member is coupled to the reinforcement for reinforcing the side sill portion. In addition, the upper end portion of the first reinforcing member is coupled to the door hinge reinforcement, and the second reinforcing member is provided at the lap portion where the first reinforcing member and the door hinge reinforcement overlap each other. Therefore, since the configuration in which the door hinge reinforcement and the pillar inner panel are connected by the first reinforcing member (for example, side sill strength extension) is not adopted, the first reinforcing member is smaller than the conventional case. The first reinforcing member and the door hinge reinforcement can be reduced in weight. The coupling portion of the cement can be reinforced by the second reinforcement member. Therefore, stress concentrates in the vicinity of the trim line on the lower end side of the door hinge reinforcement, so that the first reinforcing member is less likely to break from the trim line, so the door hinge reinforcement is the first reinforcing member. The member can be strengthened with a greater strength difference. For this reason, when an excessive impact force is applied to the side of the vehicle body, it is easy to induce an ideal deformation in which the first reinforcing member is appropriately deformed and can absorb the impact energy.

  According to a second aspect of the present invention, the second reinforcing member is disposed so as to cover at least a part of the wrap portion, and the trim line on the lower end side of the second reinforcing member is provided at the lower end of the door hinge reinforcement. The second reinforcing member is arranged below the trim line on the side so that the trim line on the lower end side of the door hinge reinforcement is straddled up and down by at least a part of the second reinforcing member. Therefore, the above-described lap portion can be effectively reinforced by the second reinforcing member, and the door hinge reinforcement is caused by stress concentration near the trim line on the lower end side of the door hinge reinforcement. Breakage starting from the trim line can be prevented.

  According to the third aspect of the present invention, the trim line on the upper end side of the first reinforcing member is arranged at a position directly below the door hinge mounting portion provided in the door hinge reinforcement. The door hinge mounting portion directly above the reinforcement can be effectively reinforced.

  According to a fourth aspect of the present invention, the first reinforcing member is sandwiched between the second reinforcing member and the door hinge reinforcement, and the door hinge reinforcement, the first reinforcing member, and the second reinforcing member are sandwiched between the second reinforcing member and the door hinge reinforcement. Since the three members are joined together, even if the door hinge reinforcement is increased in strength with a greater difference in strength than the first reinforcing member, it is excessive on the side of the vehicle body. When a strong impact force is applied, the first reinforcing member having a relatively low strength can be prevented from breaking around the joint portion of the three members.

  Further, in the present invention according to claim 5, the second reinforcing member is preliminarily assembled as a part of a side sill strength component installed between the side body inner panel and the side body outer panel in the side sill portion. Therefore, when manufacturing the side inner component having the side sill strength component as a constituent member, the number of extra parts is not increased, and the assembly can be simplified.

  According to the sixth aspect of the present invention, the lower end portion of the door hinge reinforcement that reinforces the pillar portion is coupled to the reinforcement for reinforcing the side sill portion, and the first reinforcing member is provided inside the door hinge reinforcement. And a second lower end of the first reinforcing member is extended to a position immediately below the door hinge mounting portion provided in the door hinge reinforcement, and at least a part of the lower end of the first reinforcing member is wrapped. Since the reinforcing member is provided, since the configuration in which the door hinge reinforcement and the pillar inner panel are connected by the first reinforcing member is not adopted, the first reinforcing member is more than the conventional case. It is possible to reduce the weight by reducing the size of the component, and the connecting portion between the first reinforcing member and the door hinge reinforcement is the second component. It can be reinforced by the strength member. Therefore, stress concentrates in the vicinity of the trim line on the lower end side of the first reinforcing member (for example, the pillar upper reinforcement), and the door hinge reinforcement is less likely to break from the trim line. The first reinforcing member can be strengthened with respect to the door hinge reinforcement with a greater strength difference. Therefore, when an excessive impact force is applied to the side portion of the vehicle body, it is easy to induce an ideal deformation in which the first reinforcing member is appropriately deformed and can absorb the impact energy.

  According to the seventh aspect of the present invention, the second reinforcing member is disposed so as to cover at least a part of the wrap portion, and the trim line on the lower end side of the second reinforcing member is disposed on the first reinforcing member. Since the lower end side trim line is arranged below the lower end side trim line, at least a part of the second reinforcing member is arranged so as to straddle the lower end side trim line of the first reinforcing member. Since the reinforcement member is arranged, when excessive impact force is applied to the side of the vehicle body, stress concentrates near the trim line on the lower end side of the first reinforcement member, and the door hinge reinforcement starts from this trim line. Therefore, the first reinforcing member can be strengthened with a greater strength difference with respect to the door hinge reinforcement. For this reason, it becomes easy to induce an ideal deformation that can effectively absorb the impact energy when an excessive impact force is applied to the side of the vehicle body.

  The present invention according to claim 8 is arranged with a door hinge reinforcement sandwiched between the first reinforcing member and the second reinforcing member, and the first reinforcing member, the door hinge reinforcement, Since the three members of the second reinforcing member are joined together, even when the first reinforcing member is made to have a higher strength difference with respect to the door hinge reinforcement, When an excessive impact force is applied to the vehicle body side portion, it is possible to prevent the door hinge reinforcement having a relatively low strength from breaking around the joint portion of the three members.

  Moreover, since the present invention according to claim 9 is such that the second reinforcing member is pre-assembled as a part of the door hinge reinforcement, it does not cause an increase in the number of extra parts, Assembling can be simplified.

  Hereinafter, a vehicle body side part structure of an automobile according to an embodiment of the present invention will be described with reference to FIGS.

  FIG. 1 shows an automobile 2 having a vehicle body side part structure according to an embodiment of the present invention. The side body 3 of the automobile 2 is configured by combining a side body outer panel 4 provided on the outdoor side and a side body inner panel 4 ′ (see FIG. 3) provided on the vehicle side. As shown in FIG. 2, the center pillar portion 1 constituting the center portion of the side body 3 and the side sill portion 5 constituting the lower end portion of the side body 3 are provided. And the front side door 6 and the rear side door 7 are arrange | positioned in the front-back location of the center pillar part 1. FIG. In FIG. 1, α is a lower portion of the center pillar portion 1, and β is a belt line (waist line) of the front side door 6 and the rear side door 7 at a position corresponding to the center pillar portion 1.

  2, 3 and 4 show the structure of the lower portion α of the center pillar portion 1 in an enlarged manner. In these drawings, the front side door 6, the rear side door 7, the pillar trim, and the carpets are not shown for the sake of simplicity. As shown in FIGS. 2 to 4, the lower portion α of the center pillar portion 1 includes a side body outer panel 4 constituting the outer side surface of the vehicle body, a side inner component 10 including a door hinge reinforcement 8 and a side sill strength component 9. And a floor component 13 including a floor panel 11 and a side sill inner panel 12. Thus, the side inner component 10 is provided between the side body inner panel 4 ′ and the side body outer panel 4 as a reinforcement (reinforcing member) for reinforcing the pillar portion and the side sill portion at the lower end portion α. ing. Then, a pair of screw portions 15 provided in the rear door hinge 14 serving as a rotation center of the rear side door 7 are inserted into an insertion hole 16 formed in the side body outer panel 4 and an insertion hole 17 formed in the door hinge reinforcement 8. The rear door hinge 14 is attached to the door hinge attachment portion 19 at a predetermined height position of the door hinge reinforcement 8 by sequentially inserting and arranging from the outside of the vehicle body and tightening the nuts 18 to the screw portions 15 respectively. It has become.

  Here, it is as follows when the structure of the above-mentioned side inner component 10 is described more specifically. That is, as shown in FIG. 5, the side inner component 10 includes a door hinge reinforcement 8 and a side sill strength component 9, and a lower edge 8 a of the door hinge reinforcement 8 and a side door constituting the side sill strength component 9. The upper edge portion 20a of the sill strength extension 20 (first reinforcing member) is joined in a state where they are overlapped with each other with a lap portion L, and in this state, they are joined by spot welding W (see FIG. 3) or the like. ing. As shown in FIGS. 3 and 6, the side sill strength component 9 includes a side sill strength 21 (a reinforcement for reinforcing the side sill portion), a side sill strength extension 20 as a first reinforcing member, The side-sill-strength extension 20 is joined to a part 21a of the side sill strength 21 by spot welding or the like. ing. The patch 22 is joined to the upper end edge 20a of the side sill strength extension 20, and the side sill strength extension 20 is described below in a state of being sandwiched between the patch 22 and the lower end edge part 8a of the door hinge reinforcement 8. In this manner, the three members are joined together by spot welding W and are pre-assembled into the side inner component 10.

  As shown in FIG. 3, the patch 22 is disposed so as to cover at least a part of the lap portion L where the door hinge reinforcement 8 and the side sill strength extension 20 overlap each other, and the trim on the lower end side of the patch 22 is arranged. The line M is disposed below the trim line N on the lower end side of the door hinge reinforcement 8. On the other hand, the trim line S on the upper end side of the side sill strength extension 20 is disposed at a position immediately below the rear door hinge mounting portion 19 of the door hinge reinforcement 8 (directly below position). Thereby, the door hinge attachment part 19 just above the door hinge reinforcement 8 can be effectively reinforced. In the lap portion L, the side sill strength extension 20 is disposed between the patch 22 and the door hinge reinforcement 8, and the patch 22 and the side sill strength extension 20 are formed by spot welding W or the like. And the door hinge reinforcement 8 are joined together. Furthermore, since the patch 22 has only to be disposed in the vicinity of the lap portion L between the door hinge reinforcement 8 and the side sill strength component 9 (side sill strength extension 20), the patch 22 is a relatively small part. It is pre-set as part of the component 9.

  According to the vehicle body side structure having such a configuration, the trim line S on the upper end side of the side dosill strength extension 20 is located immediately below the rear door hinge mounting part 19, so that the side dosill strength extension 20 is conventionally used. Can be made smaller and lighter. The patch 22 as the second reinforcing member is disposed so as to cover at least a part of the lap portion L between the door hinge reinforcement 8 and the side sill strength component 9, and the trim line on the lower end side of the door hinge reinforcement 8. It has a trim line M on the lower end side so that at least a part is lower than N, and is arranged so as to straddle the trim line N on the lower end side of the door hinge reinforcement 8 up and down at least partially. For this reason, the stress concentrates near the trim line N on the lower end side of the door hinge reinforcement 8, and the side sill strength extension 20 is less likely to break from the trim line N as a starting point. Accordingly, the door hinge reinforcement 8 can be strengthened with respect to the side sill strength extension 20 that is the first reinforcing member with a greater strength difference. For this reason, it becomes easy to induce an ideal deformation that can absorb the impact energy applied to the side sill strength extension 20 when an excessive impact is applied to the side of the vehicle body, and consequently the center pillar portion 1. Deformation (bending) in the vicinity of the belt line β can be prevented, and entry of the center pillar portion 1 into the vehicle interior can be suppressed.

  In addition, the side dosill strength extension 20 is disposed between the patch 22 and the door hinge reinforcement 8 so that the three members of the patch 22, the side dosill strength extension 20, and the door hinge reinforcement 8 are combined. Even when the door hinge reinforcement 8 is increased in strength with respect to the side sill strength extension 20 with a greater strength difference, when an excessive impact force is applied to the side of the vehicle body, It is possible to prevent the side-sill-strength extension 20 having a relatively low strength from being broken around the joint due to spot welding W or the like. Furthermore, since the patch 22 is pre-assembled as a part of the side sill strength component 9, when the side inner component 10 is manufactured, the number of extra parts is not increased, and the assembly is simplified. Can be planned.

  7 and 8 show a vehicle body side part structure according to another embodiment of the present invention. 7 and 8, the same parts as those in FIGS. 1 to 6 are denoted by the same reference numerals, and redundant description is omitted.

  As shown in FIGS. 7 and 8, the side inner component 10 includes a door hinge reinforcement 8 that is directly coupled to the side sill strength 21, and a cross-sectional hat-shaped pillar that is coupled to the inner surface of the door hinge reinforcement 8. The upper reinforcement 23 (first reinforcing member), the side sill strength 21, and the patch 22 (second reinforcing member) are included.

  The above-described patch 22 is arranged such that at least a part of the lower edge 23a of the pillar upper reinforcement 23 is overlapped with a lap portion L, and at least a part of the trim line T on the lower end side of the pillar upper reinforcement 23 is disposed. The trim line M on the lower end side of the patch 22 is arranged below the trim line T on the lower end side of the pillar upper force 23 so as to be further downward (see FIG. 8).

  Further, in the wrap portion L, the door hinge reinforcement 8 is disposed so as to be sandwiched between the patch 22 and the pillar upper reinforcement 23, and the patch 22 and the door hinge link are formed by spot welding W (see FIG. 8) or the like. The three members of the force 8 and the pillar upper force 23 are joined together. Furthermore, the patch 22 has only to be arranged in the vicinity of the lap portion L between the pillar upper reinforcement 23 and the door hinge reinforcement 8, and is a part of the door hinge reinforcement 8 because it is a relatively small part. It is assembled.

  According to the vehicle body side structure having such a configuration, the patch 22 is arranged so that at least a part of the patch 22 overlaps with the lower end edge portion 23a of the pillar upper reinforcement 23 with the lap portion L, and at least the patch 22 A portion of the pillar upper reinforcement 23 is disposed below the trim line T on the lower end side of the pillar upper reinforcement 23, and the trim line T on the lower end side of the pillar upper reinforcement 23 is at least part of the patch 22. Since it is arranged so as to straddle up and down, when an excessive impact force is applied to the side of the vehicle body, stress concentrates near the trim line T of the pillar upper reinforcement 23, and the door hinge reinforcement 8 is connected to this trim line. There is little risk of breakage starting from T. Therefore, the pillar upper reinforcement 23 can be strengthened with a greater strength difference with respect to the lower portion of the door hinge reinforcement 8. For this reason, when an excessive impact force is applied to the side of the vehicle body, it becomes easy to induce ideal deformation that can absorb the energy of the collision applied to the door hinge reinforcement 8, and the center pillar portion 1 Deformation (bending) in the vicinity of the belt line β can be prevented, and entry of the center pillar portion 1 into the vehicle interior can be suppressed.

  Further, the door hinge reinforcement 8 is disposed between the patch 22 and the pillar upper reinforcement 23, and the patch 22, the door hinge reinforcement 8 and the pillar upper reinforcement 23 are formed by spot welding W or the like. The three members are coupled together, so that the pillar upper reinforcement 23 is relatively strong even if it is strengthened with a greater strength difference with respect to the lower portion of the door hinge reinforcement 8. The low door hinge reinforcement 8 can be prevented from breaking around the joint portion due to spot welding W or the like when an excessive impact force is applied to the side portion of the vehicle body. Furthermore, since the patch 22 is pre-assembled as a part of the door hinge reinforcement 8, the number of extra parts is not increased, and the assembly can be simplified.

  Although one embodiment of the present invention has been described above, the present invention is not limited to this embodiment, and various modifications and changes can be made based on the technical idea of the present invention. For example, in the above-described embodiment, the patch (second reinforcing member) 22 having a hat-shaped cross section is used, but the shape of the patch 22 and the like can be changed as appropriate. Further, the present invention is not limited to the center pillar portion 1. The present invention can also be applied to the front pillar portion and the rear pillar portion.

1 is a perspective view of an automobile provided with a vehicle body side part structure according to an embodiment of the present invention. It is a perspective view which expands and shows the lower part of the center pillar part of the motor vehicle of FIG. It is the sectional view on the AA line in FIG. It is a disassembled perspective view of the side inner component which comprises the lower part of a center pillar part. It is a disassembled perspective view which shows the side sill strength component and door hinge reinforcement which comprise the lower part of a center pillar part. It is a disassembled perspective view of the above-mentioned side sill strength component. FIG. 3 is a perspective view of a side inner component 6 showing a vehicle body side part structure according to another embodiment of the present invention. It is the BB sectional view taken on the line in FIG. It is sectional drawing which shows the side part vehicle body structure in the conventional vehicle.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Center pillar part 2 Automobile 3 Side body 4 Side body outer panel 4 'Side body inner panel 5 Side sill part 8 Door hinge reinforcement 9 Side sill strength component 10 Side inner component 19 Door hinge attachment part 20 Side sill strength extension (1st reinforcement member)
21 Side sill strength 22 Patch (second reinforcing member)
23 Pillar upper reinforcement α Lower part β Belt line M, N, S, T Trim line

Claims (9)

  In the vehicle body side structure in which a side body is constituted by a side body outer panel and a side body inner panel, and a pillar portion and a side sill portion of the side body are provided with reinforcements for reinforcing the pillar portion and the side sill portion, The side body is provided with a first reinforcing member that reinforces the pillar portion and the side sill portion, a lower end portion of the first reinforcing member is coupled to a reinforcement for side sill portion reinforcement, and the first body A vehicle body characterized in that an upper end portion of a reinforcing member is coupled to a door hinge reinforcement, and a second reinforcing member is provided at a lap portion where the first reinforcing member and the door hinge reinforcement overlap each other. Side structure.   The second reinforcing member is disposed so as to cover at least a part of the lap portion, and the trim line on the lower end side of the second reinforcing member is lower than the trim line on the lower end side of the door hinge reinforcement. The vehicle body side part structure according to claim 1, wherein the vehicle body side part structure is arranged as described above.   3. The vehicle body side part structure according to claim 1, wherein a trim line on an upper end side of the first reinforcing member is disposed at a position immediately below a door hinge mounting portion provided in the door hinge reinforcement. .   The first reinforcing member is sandwiched between the second reinforcing member and the door hinge reinforcement, and the three members of the door hinge reinforcement, the first reinforcing member, and the second reinforcing member are joined together. The vehicle body side part structure according to any one of claims 1 to 3, wherein the vehicle body side part structure is connected to the vehicle body part.   The second reinforcing member is preliminarily assembled as a part of a side sill strength component installed between the side body inner panel and the side body outer panel in the side sill portion. 5. The vehicle body side part structure according to any one of 1 to 4.   In the side body structure of the automobile, in which the side body is constituted by the side body inner panel and the side body outer panel, and the pillar part and the side sill part of the side body are provided with reinforcements for reinforcing the pillar part and the side sill part, A lower end portion of a door hinge reinforcement that reinforces the pillar portion is coupled to a reinforcement for reinforcing a side sill portion, a first reinforcing member is provided inside the door hinge reinforcement, and the first reinforcing member The lower end portion extends to a position directly below the door hinge mounting portion provided in the door hinge reinforcement, and the second reinforcing member that wraps at least a part of the lower end of the first reinforcing member is provided. The car body side structure is a feature.   The second reinforcing member is disposed so as to cover at least a part of the wrap portion, and the trim line on the lower end side of the second reinforcing member is lower than the trim line on the lower end side of the first reinforcing member. The vehicle body side part structure according to claim 6, wherein the vehicle body side part structure is arranged on a side.   The first reinforcement member, the door hinge reinforcement, and the second reinforcement member are disposed with the door hinge reinforcement sandwiched between the first reinforcement member and the second reinforcement member. The vehicle body side part structure according to claim 6 or 7, wherein the three members are joined together. The vehicle body side part structure according to any one of claims 6 to 8, wherein the second reinforcing member is previously assembled as a part of the door hinge reinforcement.

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