JP2016094064A - Vehicle side structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a vehicle side structure which can efficiently transmit a load inputted into a center pillar from the outside of a vehicle width direction to a vehicle body skeleton member.SOLUTION: A vehicle side structure 10 has: a locker outer 22 having a cross section of a hat shape which constitutes an outer plate of a locker 20 extending to a vehicle body fore-and-aft direction; a locker inner 24 having a cross section of a hat shape which constitutes an inner plate of the locker 20; a pillar outer 32 which constitutes an outer plate of a center pillar 30 extending to a vehicle body vertical direction, and is joined to the locker outer 22 at its lower end; a pillar inner 34 which constitutes an inner plate of the center pillar 30, and is joined in a state that its lower end is sandwiched between the locker outer 22 and the locker inner 24; a lower wall 62 which is joined to the locker outer 22; an outer wall 64 which is joined to the pillar outer 32; and an inclined wall 70 which progresses toward the inside of a vehicle lower part when viewed from the vehicle body fore-and-aft direction. The vehicle side structure also comprises a load transmission member 60 which is arranged between the pillar outer 32 and the pillar inner 34.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a vehicle side part structure.

  At the lower end of the center pillar, a bulkhead is interposed between the pillar outer and the pillar inner, the lower end of the bulkhead is coupled to the side sill, the end of the floor cross member is coupled to the side sill, and the end of the floor cross member is further coupled. 2. Description of the Related Art A vehicle body lower structure in which a gusset is attached to an upper portion of a portion and an end portion of the gusset is coupled to a pillar inner with the bulkhead facing the bulkhead is conventionally known (see, for example, Patent Document 1).

JP 2009-262615 A

  However, there is still room for improvement in a structure that efficiently transmits the load input to the center pillar from the outside in the vehicle width direction to the vehicle body frame members such as the rocker and floor cross member at the time of a side collision of the vehicle. There is.

  Therefore, an object of the present invention is to obtain a vehicle side part structure that can efficiently transmit a load input to the center pillar from the outside in the vehicle width direction to the vehicle body skeleton member.

  In order to achieve the above object, a vehicle side part structure according to claim 1 of the present invention includes a rocker outer having a hat-shaped cross section constituting an outer plate of a rocker extending in the longitudinal direction of the vehicle body, A rocker inner with a hat-shaped cross section that forms the inner plate, an outer plate of the center pillar that extends in the vertical direction of the vehicle body, a pillar outer whose lower end is joined to the rocker outer, and an inner plate of the center pillar And a pillar inner joined with the lower end sandwiched between the rocker outer and the rocker inner, a lower wall joined to the rocker outer, an outer wall joined to the pillar outer, and a vehicle body as viewed from the front-rear direction of the vehicle body. And a load transmission member disposed between the pillar outer and the pillar inner.

  According to the first aspect of the present invention, the load transmitting member disposed between the pillar outer and the pillar inner with the lower wall joined to the rocker outer, the outer wall joined to the pillar outer, It has an inclined wall facing inward. Therefore, when a load is input to the center pillar from the outside in the vehicle width direction, the inclined wall prevents the upper side of the load transmitting member from falling inward in the vehicle width direction. Therefore, the load input to the center pillar from the outside in the vehicle width direction is efficiently transmitted to the rocker (vehicle body frame member) along the inclined wall of the load transmitting member.

  Further, the vehicle side part structure according to claim 2 is the vehicle side part structure according to claim 1, wherein the vehicle side part structure is provided between the rocker outer and a lower end portion of the pillar inner and below the load transmission member. An outer bulkhead provided; an inner bulkhead provided between the rocker inner and the lower end of the pillar inner and facing the outer bulkhead in the vehicle width direction; and a vehicle width direction of the inner bulkhead A floor cross member that extends inward in the vehicle width direction and has an outer end portion in the vehicle width direction joined to the rocker inner.

  According to the second aspect of the invention, the outer bulkhead is provided below the load transmission member, and the inner bulkhead is provided so as to face the outer bulkhead in the vehicle width direction. A floor cross member extending in the vehicle width direction is provided on the inner side of the inner bulkhead in the vehicle width direction, and an outer end portion of the floor cross member in the vehicle width direction is joined to the rocker inner. Therefore, when a load is input to the center pillar from the outside in the vehicle width direction, the load is transmitted from the load transmitting member to the floor cross member (vehicle body frame member) via the outer bulkhead and the inner bulkhead. That is, the load input to the center pillar from the outside in the vehicle width direction is efficiently distributed and transmitted to the rocker and the floor cross member.

  Further, the vehicle side part structure according to claim 3 is the vehicle side part structure according to claim 2, wherein the load transmitting member includes a front wall and a rear wall that are spaced apart in the longitudinal direction of the vehicle body. The outer bulkhead and the inner bulkhead each have a front vertical wall and a rear vertical wall at the same position in the longitudinal direction of the vehicle body with respect to the front wall and the rear wall.

  According to the third aspect of the present invention, the front wall of the load transmitting member and the front vertical walls of the outer bulkhead and the inner bulkhead are disposed at the same position in the longitudinal direction of the vehicle body. The rear vertical walls of the bulkhead and the inner bulkhead are arranged at the same position in the longitudinal direction of the vehicle body. Therefore, the load input to the center pillar from the outside in the vehicle width direction is efficiently transmitted from the front wall and the rear wall of the load transmitting member to the front vertical wall and the rear vertical wall of the outer bulkhead, respectively. It is efficiently transmitted from the vertical wall and the rear vertical wall to the front vertical wall and the rear vertical wall of the inner bulkhead, respectively.

  Further, the vehicle side portion structure according to claim 4 is the vehicle side portion structure according to claim 3, wherein the floor cross member is formed in a hat-shaped cross section having a front side wall and a rear side wall. The front vertical wall and the rear vertical wall of the inner bulkhead are disposed at the same position in the vehicle longitudinal direction as the front side wall and the rear side wall, respectively.

  According to the fourth aspect of the present invention, the front side wall of the floor cross member and the front vertical wall of the inner bulkhead are disposed at the same position in the longitudinal direction of the vehicle body, and the rear side wall of the floor cross member and the rear vertical wall of the inner bulkhead are arranged. The wall is disposed at the same position in the longitudinal direction of the vehicle body. Therefore, the load input to the center pillar from the outside in the vehicle width direction and transmitted from the load transmitting member to the inner bulkhead via the outer bulkhead is transferred from the front vertical wall and the rear vertical wall of the inner bulkhead to the floor cross member. Each is efficiently transmitted to the front side wall and the rear side wall.

  Further, the vehicle side part structure according to claim 5 is the vehicle side part structure according to claim 3 or 4, wherein the outer bulkhead and the inner bulkhead include the front vertical wall. And a rear portion having the rear vertical wall.

  According to the invention described in claim 5, the outer bulkhead and the inner bulkhead are each divided into a front portion having a front vertical wall and a rear portion having a rear vertical wall. Accordingly, the front vertical walls of the outer bulkhead and the inner bulkhead are easily arranged with high positional accuracy with respect to the front wall of the load transmission member and the front side wall of the floor cross member. The rear vertical walls of the outer bulkhead and the inner bulkhead are easily arranged with high positional accuracy with respect to the rear side wall.

  According to the first aspect of the present invention, the load input to the center pillar from the outside in the vehicle width direction can be efficiently transmitted to the rocker as the vehicle body skeleton member by the load transmitting member.

According to the invention which concerns on Claim 2, the load input into the center pillar from the vehicle width direction outer side,
The load transmitting member can efficiently disperse and transmit the rocker as the vehicle body frame member and the floor cross member as the vehicle body frame member.

  According to the invention of claim 3, the load input to the center pillar from the outside in the vehicle width direction is efficiently transferred from the front wall and the rear wall of the load transmitting member to the front vertical wall and the rear vertical wall of the outer bulkhead. Therefore, the transmission can be efficiently performed from the front vertical wall and the rear vertical wall of the outer bulkhead to the front vertical wall and the rear vertical wall of the inner bulkhead.

  According to the fourth aspect of the present invention, the load that is input to the center pillar from the outside in the vehicle width direction and transmitted from the load transmitting member to the inner bulkhead via the outer bulkhead is transmitted to the front vertical wall and the rear of the inner bulkhead. It is possible to efficiently transmit from the vertical wall to the front side wall and the rear side wall of the floor cross member.

  According to the invention which concerns on Claim 5, each front vertical wall of an outer bulkhead and an inner bulkhead can be easily arrange | positioned with sufficient positional accuracy with respect to the front wall of a load transmission member, and the front side wall of a floor cross member. The rear vertical walls of the outer bulkhead and the inner bulkhead can be easily arranged with high positional accuracy with respect to the rear wall of the load transmitting member and the rear side wall of the floor cross member.

It is a perspective view which shows the vehicle side part structure which concerns on 1st Embodiment. It is a front view which shows the vehicle side part structure which concerns on 1st Embodiment in a partial cross section. It is a side view which shows the vehicle side part structure which concerns on 1st Embodiment seeing from the vehicle width direction inner side. It is a top view which shows the vehicle side part structure which concerns on 1st Embodiment. It is a front view which shows the load transmission path | route in the vehicle side part structure which concerns on 1st Embodiment. It is a front view which shows the vehicle side part structure which concerns on 2nd Embodiment in a partial cross section. It is a front view which shows the vehicle side part structure which concerns on a reference example in a partial cross section.

  Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings. For convenience of explanation, an arrow UP appropriately shown in each drawing is an upward direction of the vehicle body, an arrow FR is a forward direction of the vehicle body, and an arrow OUT is an outer side of the vehicle width direction. Further, in the following description, when using the up / down, front / rear, and left / right directions, the vertical direction of the vehicle body, the front / rear direction of the vehicle body direction, and the left / right direction of the vehicle body (vehicle width direction) are indicated. Furthermore, although each figure shows the left side of the vehicle body, the right side of the vehicle body is also symmetrical and identical, and therefore the description of the right side of the vehicle body will be omitted as appropriate.

<First Embodiment>
First, the vehicle side part structure 10 according to the first embodiment will be described. As shown in FIG. 1 and FIG. 2, rockers 20 extending in the longitudinal direction of the vehicle body are disposed at the left and right lower portions of the vehicle body 12. The rocker 20 is a vehicle body skeleton member also called a side sill, and includes a rocker outer 22 having a cross-sectional hat shape that forms an outer plate of the rocker 20, and a rocker inner 24 having a cross-sectional hat shape that forms an inner plate of the rocker 20. ing.

  A center pillar 30 (B pillar) extending in the vertical direction of the vehicle body is disposed between the front door opening 14 and the rear door opening 16 formed on the left and right sides of the vehicle body 12. ing. The center pillar 30 constitutes an outer plate of the center pillar 30, a pillar outer 32 whose lower end 33 is joined along the outer wall of the rocker outer 22, an inner plate of the center pillar 30, and a lower end 35 which is a rocker outer. 22 and a pillar inner 34 joined between the rocker inner 24 and the rocker inner 24.

  Specifically, the upper flange portion 22A and the lower flange portion 22B of the rocker outer 22 and the upper flange portion 24A and the lower flange portion 24B of the rocker inner 24 are joined by spot welding with the lower end portion 35 of the pillar inner 34 interposed therebetween. . As a result, the rocker outer 22 and the lower end portion 35 of the pillar inner 34 constitute a closed cross-sectional shape, and the rocker inner 24 and the lower end portion 35 of the pillar inner 34 constitute a closed cross-sectional shape.

  Note that the pillar inner 34 on the upper side of the vehicle body with respect to the joint portion where the upper flange portion 22A and the upper flange portion 24A are joined is bent at a substantially right angle toward the inner side in the vehicle width direction when viewed from the front-rear direction of the vehicle body. A bent portion 38 (see FIG. 2) that is bent at a substantially right angle toward the upper side of the vehicle body is formed. By this bent portion 38, a space in the vehicle width direction between the pillar outer 32 and the pillar inner 34 on the vehicle body upper side than the joint portion is expanded.

  The pillar outer 32 has a front flange portion 32A (see FIG. 1) and a rear flange portion (not shown), and the pillar inner 34 is a front flange portion joined to the front flange portion 32A by spot welding. 34A (refer FIG. 1), and the rear flange part (illustration omitted) joined by the said rear flange part and spot welding. Thereby, the center pillar 30 is comprised by the closed cross-sectional shape. The pillar outer 32 is provided with an attachment portion 36 (see FIG. 2) to which a lower hinge portion (not shown) of the rear door is attached.

  Further, between the rocker outer 22 and the lower end portion 35 of the pillar inner 34 on the inner side in the vehicle width direction of the pillar outer 32 and on the vehicle body lower side of the load transmission member 60 described later, the rocker outer 22 and the pillar inner 34 are seen from the vehicle longitudinal direction. The outer bulkhead 40 having the same shape as the closed cross-sectional shape formed by the lower end portion 35 of the head is provided.

  The rocker inner 24 and the lower end portion 35 of the pillar inner 34 are located between the rocker inner 24 and the lower end portion 35 of the pillar inner 34 and at a position facing the outer bulkhead 40 in the vehicle width direction when viewed from the vehicle longitudinal direction. An inner bulkhead 50 having the same shape as the closed cross-sectional shape is provided.

  As shown in FIG. 3, the outer bulkhead 40 is formed in a cylindrical shape that opens in the longitudinal direction of the vehicle body, and is divided into a front part 42 and a rear part 44. The front vertical wall 46 is provided along the vehicle width direction so as to close the opening inside the front portion 42, and the rear vertical wall 48 closes the opening inside the rear portion 44. Are provided along the vehicle width direction.

  That is, the front vertical wall 46 and the rear vertical wall 48 are provided such that the normal direction thereof is the vehicle body front-rear direction. In the outer bulkhead 40, a front part of the vehicle body from the front vertical wall 46 in the front part 42 and a rear part of the vehicle body from the rear vertical wall 48 in the rear part 44 are joined to the rocker outer 22 by spot welding. Thus, it is fixed in the rocker 20.

  As shown in FIG. 4, the inner bulkhead 50 is formed in a cylindrical shape that opens in the longitudinal direction of the vehicle body, and is divided into a front portion 52 and a rear portion 54. The front vertical wall 56 is provided along the vehicle width direction so as to close the opening inside the front portion 52, and the rear vertical wall 58 closes the opening inside the rear portion 54. Are provided along the vehicle width direction.

  That is, the front vertical wall 56 and the rear vertical wall 58 are provided such that the normal direction thereof is the vehicle body front-rear direction. In the inner bulkhead 50, a front part of the vehicle body from the front vertical wall 56 in the front part 52 and a rear part of the vehicle body from the rear vertical wall 58 in the rear part 54 are joined to the rocker inner 24 by spot welding. Thus, it is fixed in the rocker 20.

  Further, the front vertical wall 46 in the outer bulkhead 40 and the front vertical wall 56 in the inner bulkhead 50 are arranged at the same position in the vehicle longitudinal direction. The rear vertical wall 48 of the outer bulkhead 40 and the rear vertical wall 58 of the inner bulkhead 50 are also arranged at the same position in the vehicle body longitudinal direction.

  As shown in FIGS. 1, 2, and 4, a floor cross member 26 extending in the vehicle width direction is disposed inside the inner bulkhead 50 in the vehicle width direction. The floor cross member 26 is a vehicle body skeleton member that forms a skeleton of the vehicle body together with the rocker 20, and is a top that integrally connects the front side wall 26A and the rear side wall 26B, and the upper end portion of the front side wall 26A and the upper end portion of the rear side wall 26B. It is formed in a cross-sectional hat shape having a wall 26C, a front flange portion 26D connected to the lower end portion of the front side wall 26A, and a rear flange portion (not shown) connected to the lower end portion of the rear side wall 26B. ing.

  The floor cross member 26 forms a closed cross-sectional shape with the floor panel 18 by joining the front flange portion 26D and the rear flange portion to the floor panel 18 constituting the floor of the passenger compartment by spot welding. It has become. In addition, a flange portion 28 extending integrally with the upper side of the vehicle body is integrally connected to the outer end portion of the floor cross member 26 in the vehicle width direction, and each flange portion 28 is joined to the outer wall of the rocker inner 24 by spot welding. Has been.

  4, the front side wall 26A of the floor cross member 26, the front vertical wall 56 of the inner bulkhead 50, and the front vertical wall 46 of the outer bulkhead 40 are disposed at the same position in the vehicle longitudinal direction. The rear side wall 26B of the floor cross member 26, the rear vertical wall 58 of the inner bulkhead 50, and the rear vertical wall 48 of the outer bulkhead 40 are disposed at the same position in the longitudinal direction of the vehicle body.

  1 to 4, a load transmitting member 60 formed in a block shape is disposed between the pillar outer 32 and the pillar inner 34 and on the vehicle body upper side of the rocker outer 22. The load transmission member 60 has a hollow triangular prism shape whose wall surfaces (front wall 66 and rear wall 68 described later) are substantially right-angled triangles.

  More specifically, the load transmitting member 60 includes a rectangular lower wall 62 whose length in the vehicle width direction is substantially the same as that of the upper wall of the rocker outer 22, and a length in the vehicle body vertical direction of the mounting portion 36. It has a rectangular outer wall 64 having a length extending to the vicinity of the lower end, and a rectangular inclined wall 70 facing inward of the vehicle body when viewed from the front-rear direction of the vehicle body.

  The lower wall 62 is joined to the upper wall of the rocker outer 22 by spot welding, and the outer wall 64 is joined to the pillar outer 32 by spot welding. Thereby, the load transmission member 60 is arranged and fixed on the vehicle body upper side than the rocker 20 and on the vehicle body lower side than the mounting portion 36. The inclined wall 70 has an opening (not shown) for spot welding the lower wall 62 and the outer wall 64.

  The load transmission member 60 has a front wall 66 at the same position in the longitudinal direction of the vehicle body as the front vertical walls 46 and 56 of the outer bulkhead 40 and the inner bulkhead 50, and the outer bulkhead 40 and the inner bulkhead 50. A rear wall 68 is provided at the same position in the longitudinal direction of the vehicle body as the rear vertical walls 48 and 58 of the head 50. Accordingly, the front wall 66 and the rear wall 68 that are spaced apart from each other in the longitudinal direction of the vehicle body of the load transmitting member 60 are disposed at the same position in the longitudinal direction of the vehicle body with respect to the front side wall 26A and the rear side wall 26B of the floor cross member 26. Yes.

  Next, the operation of the vehicle side part structure 10 according to the first embodiment configured as described above will be described.

  When the vehicle collides sideways, a collision load is input to the center pillar 30 from the outside in the vehicle width direction to the inside in the vehicle width direction. Then, the center pillar 30 is plastically deformed so that the lower side of the vehicle body falls inward in the vehicle width direction from the lower hinge portion (attachment portion 36) of the rear door. However, a load transmission member 60 having an inclined wall 70 is disposed at the portion where plastic deformation is likely to occur. Therefore, the plastic deformation can be suppressed. This will be described below.

  As shown in FIG. 5, when the collision load F is input to the center pillar 30 from the outside in the vehicle width direction, as described above, the collision load F1 (part of the collision load F) is applied to the load transmission member 60 from the outside in the vehicle width direction. ) Is entered. Here, the load transmitting member 60 has a lower wall 62 joined to the upper wall of the rocker outer 22 and an outer wall 64 joined to the pillar outer 32. And this load transmission member 60 has the inclined wall 70 which goes to a vehicle body downward inner side seeing from the vehicle body front-back direction.

  Therefore, even if the collision load F1 is input to the load transmission member 60, the inclined wall prevents the upper side of the load transmission member 60 from falling inward in the vehicle width direction (rotating inward in the vehicle width direction with the vehicle body longitudinal direction as an axis). 70 can be suppressed. Therefore, the collision load F1 input to the load transmission member 60 is efficiently transmitted to the rocker 20 along the inclined wall 70 from the initial stage of the collision.

  An outer bulkhead 40 is provided in the rocker 20 on the vehicle body lower side of the load transmission member 60, specifically, between the rocker outer 22 and the lower end portion 35 of the pillar inner 34. An inner bulkhead 50 is provided between the rocker inner 24 and the lower end portion 35 of the pillar inner 34 facing the outer bulkhead 40 in the vehicle width direction. Further, a floor cross member 26 extending in the vehicle width direction is provided inside the inner bulkhead 50 in the vehicle width direction.

  Therefore, the collision load F <b> 1 input to the load transmission member 60 is efficiently transmitted to the rocker 20 along the inclined wall 70, and via the outer bulkhead 40 and the inner bulkhead 50 provided in the rocker 20. Then, it is also transmitted to the floor cross member 26. That is, the collision load F1 input to the load transmission member 60 is efficiently dispersed and transmitted to the rocker 20 (collision load F2) and the floor cross member 26 (collision load F3).

  More specifically, the front wall 66 of the load transmission member 60 and the front vertical walls 46 and 56 of the outer bulkhead 40 and the inner bulkhead 50 are in the same position in the longitudinal direction of the vehicle body. The positions of the rear wall 68 and the rear vertical walls 48 and 58 of the outer bulkhead 40 and the inner bulkhead 50 in the vehicle longitudinal direction are the same.

  Therefore, a part of the collision load F1 (collision load F2) input to the load transmission member 60 is efficiently transferred from the front wall 66 and the rear wall 68 to the front vertical wall 46 and the rear vertical wall 48 of the outer bulkhead 40, respectively. It is transmitted efficiently from the front vertical wall 46 and the rear vertical wall 48 of the outer bulkhead 40 to the front vertical wall 56 and the rear vertical wall 58 of the inner bulkhead 50, respectively.

  Further, the positions of the front vertical wall 56 of the inner bulkhead 50 and the front side wall 26A of the floor cross member 26 in the vehicle longitudinal direction are the same, and the rear vertical wall 58 of the inner bulkhead 50 and the floor cross member 26 are The position of the rear side wall 26B in the vehicle longitudinal direction is the same. Accordingly, part of the collision load F2 (collision load F3) transmitted to the front vertical wall 56 and the rear vertical wall 58 of the inner bulkhead 50 is efficiently transmitted to the front side wall 26A and the rear side wall 26B of the floor cross member 26, respectively. Is done.

  As described above, the collision load F input to the center pillar 30 is efficiently dispersed and transmitted from the load transmitting member 60 to the rocker 20 and the floor cross member 26 that are vehicle body skeleton members. Therefore, at the time of a side collision of the vehicle, the center pillar 30 can be prevented from being plastically deformed so as to fall inward in the vehicle width direction, and the center pillar 30 can be prevented from entering the vehicle compartment side.

  Further, the outer bulkhead 40 and the inner bulkhead 50 provided in the rocker 20 are respectively provided in front portions 42 and 52 having front vertical walls 46 and 56 and rear portions 44 and 54 having rear vertical walls 48 and 58. It is divided.

  Therefore, the front vertical walls 46 and 56 of the outer bulkhead 40 and the inner bulkhead 50 can be easily arranged with high positional accuracy with respect to the front wall 66 of the load transmitting member 60 and the front side wall 26A of the floor cross member 26. it can. The rear vertical walls 48 and 58 of the outer bulkhead 40 and the inner bulkhead 50 can be easily arranged with high positional accuracy with respect to the rear wall 68 of the load transmitting member 60 and the rear wall 26B of the floor cross member 26. it can.

Second Embodiment
Next, the vehicle side part structure 10 according to the second embodiment will be described. In addition, the same code | symbol is attached | subjected to the site | part equivalent to the said 1st Embodiment, and detailed description (a common effect | action is also included) is abbreviate | omitted suitably.

  As shown in FIG. 6, the load transmission member 60 in the second embodiment has a hollow quadrangular prism shape in which a front wall 66 and a rear wall 68 are substantially trapezoidal. More specifically, the load transmission member 60 includes a lower wall 62, an outer wall 64, a front wall 66, a rear wall 68, an inclined wall 70 that extends inward of the vehicle body when viewed from the vehicle longitudinal direction, and the rocker outer 22. The upper flange portion 22A and the inner wall 72 having substantially the same length in the vehicle body vertical direction are provided.

  The lower wall 62 is joined to the upper wall of the rocker outer 22 by spot welding, the outer wall 64 is joined to the pillar outer 32 by spot welding, and the inner wall 72 is joined to the upper flange portion 22A of the rocker outer 22 by spot welding. Even with the load transmission member 60 configured as described above, the same effects as those of the first embodiment can be obtained.

<Reference example>
Finally, the vehicle side part structure 10 according to the reference example will be described. In addition, the same code | symbol is attached | subjected to the site | part equivalent to the said 1st Embodiment and 2nd Embodiment, and detailed description (a common effect | action is also included) is abbreviate | omitted suitably.

  As shown in FIG. 7, the load transmitting member 60 in this reference example also has a hollow quadrangular prism shape in which the front wall 66 and the rear wall 68 are substantially trapezoidal. More specifically, the load transmission member 60 includes a lower wall 62, an outer wall 64, a front wall 66, a rear wall 68, an inclined wall 70 that extends inward of the vehicle body when viewed from the vehicle longitudinal direction, and the rocker outer 22. The upper flange portion 22A and the inner wall 72 having substantially the same length in the vehicle body vertical direction are provided.

  The outer wall 64 is joined to the pillar outer 32 by spot welding, and the inner wall 72 is joined to the upper flange portion 22A of the rocker outer 22 by spot welding. That is, in the load transmission member 60 in this reference example, the lower wall 62 is not joined to the upper wall of the rocker outer 22.

  Therefore, in the vehicle side part structure 10 according to this reference example, it is difficult to obtain the same operational effects as those of the first embodiment and the second embodiment, but compared to the configuration without the load transmission member 60, At the time of a side collision, the plastic deformation of the center pillar 30 toward the inside in the vehicle width direction can be suppressed, and the amount of the center pillar 30 entering the vehicle compartment can be reduced.

  As mentioned above, although the vehicle side part structure 10 which concerns on this embodiment was demonstrated based on drawing, the vehicle side part structure 10 which concerns on this embodiment is not limited to the thing of illustration, The summary of this invention The design can be changed as appropriate without departing from the scope. For example, the joining of each part is not limited to joining by spot welding, but may be joining by arc welding, industrial adhesive, rivet or the like.

  Further, the load transmission member 60 is not limited to the configuration formed in the hollow triangular prism shape or the quadrangular prism shape having the inclined wall 70, and is formed in the solid triangular prism shape or the rectangular prism shape having the inclined wall 70. May be. Similarly to the outer bulkhead 40 and the inner bulkhead 50, the load transmitting member 60 is formed in a cylindrical shape that opens in the longitudinal direction of the vehicle body, and a front wall 66 and a rear wall 68 that close the opening are formed in the interior thereof. You may be set as the structure spaced apart in the direction.

  Further, the front wall 66 and the rear wall of the load transmission member 60 can be used as long as the collision load input to the center pillar 30 can be efficiently distributed and transmitted from the load transmission member 60 to the rocker 20 and the floor cross member 26. 68, the front vertical wall 46 and the rear vertical wall 48 of the outer bulkhead 40, the front vertical wall 56 and the rear vertical wall 58 of the inner bulkhead 50, and the front side wall 26A and the rear side wall 26B of the floor cross member 26. It does not have to be arranged at the same position in the longitudinal direction of the vehicle body.

  Further, the front vertical wall 46 and the rear vertical wall 48 of the outer bulkhead 40 and the inner bulkhead 50 with respect to the front wall 66 and the rear wall 68 of the load transmitting member 60 and the front side wall 26A and the rear side wall 26B of the floor cross member 26. If the positions of the front vertical wall 56 and the rear vertical wall 58 in the longitudinal direction of the vehicle body can be accurately arranged at the same position, the outer bulkhead 40 and the inner bulkhead 50 need not be divided into two parts.

DESCRIPTION OF SYMBOLS 10 Vehicle side part structure 20 Rocker 22 Rocker outer 24 Rocker inner 26 Floor cross member 26A Front side wall 26B Rear side wall 30 Center pillar 32 Pillar outer 34 Pillar inner 40 Outer bulkhead 42 Front part 44 Rear part 46 Front vertical wall 48 Rear vertical wall 50 Inner bulkhead 52 Front part 54 Rear part 56 Front vertical wall 58 Rear vertical wall 60 Load transmitting member 62 Lower wall 64 Outer wall 66 Front wall 68 Rear wall 70 Inclined wall

Claims (5)

A rocker outer with a hat-shaped cross section that constitutes the outer plate of the rocker extending in the longitudinal direction of the vehicle body;
A rocker inner having a hat-shaped cross section constituting the inner plate of the rocker;
A pillar outer that constitutes the outer plate of the center pillar extending in the vertical direction of the vehicle body and whose lower end is joined to the rocker outer;
The inner pillar of the center pillar constitutes a pillar inner joined with the lower end sandwiched between the rocker outer and the rocker inner,
A lower wall joined to the rocker outer; an outer wall joined to the pillar outer; and an inclined wall facing inward of the vehicle body when viewed from the front-rear direction of the vehicle body, and disposed between the pillar outer and the pillar inner. A load transmitting member;
Vehicle side part structure provided with. An outer bulkhead provided between the rocker outer and a lower end portion of the pillar inner and below the load transmission member;
An inner bulkhead provided between the rocker inner and the lower end of the pillar inner and facing the outer bulkhead in the vehicle width direction;
A floor cross member extending in the vehicle width direction on the inner side of the inner bulkhead in the vehicle width direction, and having an outer end in the vehicle width direction joined to the rocker inner;
The vehicle side part structure according to claim 1, comprising: The load transmitting member has a front wall and a rear wall that are spaced apart from each other in the longitudinal direction of the vehicle body,
3. The vehicle side part structure according to claim 2, wherein the outer bulkhead and the inner bulkhead each have a front vertical wall and a rear vertical wall at the same position in the vehicle longitudinal direction with respect to the front wall and the rear wall. The floor cross member is formed in a cross-sectional hat shape having a front side wall and a rear side wall,
4. The vehicle side part structure according to claim 3, wherein the front vertical wall and the rear vertical wall of the inner bulkhead are disposed at the same position in the vehicle longitudinal direction with respect to the front side wall and the rear side wall, respectively.   The vehicle side part structure according to claim 3 or 4, wherein the outer bulkhead and the inner bulkhead are each divided into a front part having the front vertical wall and a rear part having the rear vertical wall. .