JP2013216296A - Vehicle side part structure and vehicle body structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle side part structure and a vehicle body structure capable of improving load transmission function to a side collision detection sensor when an impactor, such as a pole, collides with a vehicle side.SOLUTION: A bracket 34 formed in a hat shape in a vertical cross-sectional view is placed outside in a vehicle width direction of a vertical wall 28A of a rocker outer panel 28. The bracket 34 includes: a bracket side vertical wall 34A for receiving load at collision with an impactor; a bracket side lower wall 34B extended inward in a vehicle width direction from a lower edge of the bracket side vertical wall and connected to a lower wall 28B of the rocker outer panel 28; and a bracket side upper wall 34C extended inward in a vehicle width direction from an upper edge of the bracket side vertical wall 34A and connected to an upper wall 28D of the rocker outer panel 28.

Description

  The present invention relates to a vehicle side structure and a vehicle body structure in consideration of load transmission performance when a collision body such as a pole collides with a vehicle side.

  In recent years, as an occupant protection assist device, a head protection airbag device that deploys an airbag in the form of a curtain below a roof side rail portion at the time of a side collision, a side airbag built in a seat back side portion, etc. Side airbag devices that are deployed between the door and the side door have come to be mounted.

  In order to operate these head protection airbag devices and side airbag devices, a side collision detection sensor for detecting a side collision state is required, and this type of side collision detection sensor is a predetermined position of the body. It is arranged.

  Here, the following Patent Document 1 discloses a body structure for shortening the detection time by the side collision detection sensor disposed inside the center pillar. Briefly, a metal bracket having a hat-shaped vertical cross section is set on the outer side surface of the rocker in the vehicle width direction or on the inner side of the rocker molding disposed on the lower edge side of the door opening that is opened and closed by the side door. ing. Thereby, at the time of a side collision, the collision load from collision bodies, such as a pole, is inputted into a bracket ahead of a rocker. The collision load input to the bracket is transmitted to the side collision detection sensor via the rocker. As a result, the collision load is quickly transmitted to the side collision detection sensor.

  However, in the case of the prior art described in Patent Document 1, since the bracket is provided on the lower side of the vehicle in the vehicle width direction of the rocker in the vehicle vertical direction, the collision load at the time of a side collision is lower on the rocker (lower wall). ) To the side collision detection sensor. Therefore, there is a problem that the transmission efficiency of the collision load at the time of a side collision is low. Further, when a pole or the like collides with the bracket, there is a possibility that the bracket may fall or the deformation may not be stable, and there is a problem that the side collision detection performance is not stable.

  In response to this problem, according to the prior art described in FIG. 4 of Patent Document 2 below, the bracket is disposed from the lower part of the rocker in the vehicle width direction on the outer side in the vehicle vertical direction to the vicinity of the intermediate part. It seems to be improved.

Japanese Patent No. 4186967 JP 2008-254702 A (FIG. 4)

  However, in the case of the prior art disclosed in FIG. 4 of Patent Document 2, the collision load transmitted to the upper wall of the bracket is locally input in the vicinity of the middle portion of the vertical wall portion of the rocker in the vehicle vertical direction. For this reason, the vertical wall portion of the rocker bends inward in the vehicle width direction, so that the transmission efficiency of the collision load at the time of a side collision may be reduced, and consequently the transmission performance of the collision load may be reduced. Therefore, the prior art disclosed in Patent Document 2 also has room for improvement in this respect.

  In view of the above facts, the present invention has an object to obtain a vehicle side structure and a vehicle body structure that can improve the load transmission performance to a side collision detection sensor when a collision body such as a pole collides with the vehicle side. It is.

  The vehicle side part structure according to the present invention as defined in claim 1 constitutes a part of a rocker having a closed cross-sectional structure disposed along the vehicle front-rear direction on the lower edge side of the door opening. The shape of the longitudinal section viewed from the front side of the vehicle cut along the direction is a hat shape, and extends along the vehicle width direction and the vertical wall portion extending along the vehicle vertical direction in the longitudinal section view. A rocker outer panel configured to include an existing lower wall portion and an upper wall portion, a vertical wall-shaped load receiving portion disposed at a position spaced outward from the vertical wall portion in the vehicle width direction, and the load receiving portion A lower load transmitting portion that extends inward in the vehicle width direction from the lower edge side and is connected to the lower wall portion, and an inner portion in the vehicle width direction that extends from the upper edge side of the load receiving portion and is connected to the upper wall portion And an upper load transmission portion.

  According to a second aspect of the present invention, the vehicle side portion structure according to the first aspect of the present invention is the first aspect of the invention, wherein the load transmitting member extends along the vertical direction of the vehicle in the longitudinal sectional view and A second vertical wall portion disposed opposite to the outer side in the vehicle width direction, and a second lower wall extending from the lower edge of the second vertical wall portion to the inner side in the vehicle width direction and fixed to the lower wall portion And a second upper wall portion extending inward in the vehicle width direction from the upper edge of the second vertical wall portion and fixed to the upper wall portion.

  According to a third aspect of the present invention, there is provided the vehicle side portion structure according to the second aspect, wherein the length of the second vertical wall portion in the vertical direction of the vehicle is the second vertical wall portion and the rocker outer panel. It is set longer than the distance from the vertical wall.

  According to a fourth aspect of the present invention, there is provided the vehicle side portion structure according to the second or third aspect, wherein the second vertical wall portion is formed with a first bead whose longitudinal direction is the vehicle front-rear direction. In addition, a second bead having a longitudinal direction in the vehicle width direction is formed on the second upper wall portion.

  According to a fifth aspect of the present invention, there is provided the vehicle side portion structure according to the first aspect of the invention, wherein the load transmission member extends in the vertical direction of the vehicle in the longitudinal sectional view, and And an elevating portion that is spaced apart outward in the vehicle width direction, a lower surface portion that extends from the lower edge of the elevating portion to the inner side in the vehicle width direction and is connected to the lower wall portion, and the elevating portion And a top surface portion that extends inward in the vehicle width direction and is connected to the upper wall portion.

  According to a sixth aspect of the present invention, the vehicle body structure according to the present invention is disposed at an intermediate portion of the vehicle body floor in the vehicle width direction and extends in the vehicle front-rear direction, and is provided with a side collision detection sensor that detects a collision load at the time of a side collision. A floor tunnel and a pair of left and right rockers provided with the load transmitting member according to any one of claims 1 to 5.

  According to the first aspect of the present invention, when a collision body such as a pole collides with the side of the vehicle, the collision load due to the collision body is arranged along the vehicle longitudinal direction on the lower edge side of the door opening. Entered in the locker.

  Here, in the present invention, the rocker outer panel that constitutes a part of the rocker having the closed cross-sectional structure is formed in a hat shape in a vertical cross-sectional view, and is positioned at a position spaced outward in the vehicle width direction with respect to the vertical wall portion ( A vertical wall-shaped load receiving portion (of the load transmitting member) is located. Therefore, the collision load from the collision body is input to the load receiving portion before the rocker outer panel. A lower load transmission portion and an upper load transmission portion are extended inward in the vehicle width direction on the lower edge side and upper edge side of the load receiving portion, respectively. The lower load transmission portion is connected to the lower wall portion of the rocker outer panel. The upper load transmission portion is connected to the upper wall portion of the rocker outer panel. For this reason, the collision load input to the load receiving portion of the load transmitting member is directly transmitted from the lower load transmitting portion to the lower wall portion of the rocker outer panel, and directly from the upper load transmitting portion to the upper wall portion of the rocker outer panel. Is transmitted.

  Further, since the rocker outer panel is formed in a hat shape in the longitudinal sectional view as described above, the ridge line portion formed at the connection portion between the vertical wall portion and the lower wall portion, and the vertical wall portion and the upper wall portion. The ridge portion formed at the connection site has the highest rigidity and the best load transmission performance. In the present invention, paying attention to this point, the relationship between the rocker outer panel having such a structure and the load transmitting material is examined closely, and not only the load transmitting member is disposed outside the rocker outer panel in the vehicle width direction, but also the load receiving member is received. The lower load transmission portion and the upper load transmission portion are provided so that the side collision load input to the portion is directly transmitted to the lower wall portion and the upper wall portion of the rocker outer panel. Thereby, the collision load at the time of a side collision is transmitted to the rocker quickly and directly, and further to the side collision detection sensor.

  According to the second aspect of the present invention, the load transmitting member is a metal bracket, and the collision load at the time of a side collision is arranged to face the outer side in the vehicle width direction with respect to the vertical wall portion of the rocker outer panel. The second vertical wall is input. The input collision load is transmitted from the second lower wall portion to the lower wall portion of the rocker outer panel and transmitted from the second upper wall portion to the upper wall portion of the rocker outer panel.

  Here, since the load transmission member of the present invention is composed of a metal bracket, it is easy to manufacture.

  According to the third aspect of the present invention, the length of the second vertical wall portion in the vehicle vertical direction is set longer than the distance between the second vertical wall portion and the vertical wall portion of the rocker outer panel. Compared to the case of using a related load transmission member, the load transmission member is less likely to fall when it receives a collision load at the time of a side collision. For this reason, variation in the collision load to be transmitted to the rocker outer panel due to the fall of the load transmitting member is suppressed.

  According to the fourth aspect of the present invention, since the first bead whose longitudinal direction is the longitudinal direction of the vehicle is formed on the second vertical wall portion, the rigidity of the second vertical wall portion is increased. For this reason, when a collision body such as a pole collides with the second vertical wall portion from the outside in the vehicle width direction, the second vertical wall portion is hardly broken. Moreover, since the 2nd bead which makes a vehicle width direction a longitudinal direction is formed in the 2nd upper wall part, the rigidity of a 2nd upper wall part becomes high with respect to the load input from a vehicle width direction. For this reason, when a collision body such as a pole collides with the second vertical wall portion from the outside in the vehicle width direction, the second upper wall portion is unlikely to buckle in the vehicle width direction.

  According to the fifth aspect of the present invention, the load transmitting member is a resin structure, and the collision load at the time of a side collision is spaced apart from the vertical wall portion of the rocker outer panel on the outer side in the vehicle width direction. Is input to the raised elevation. The input collision load is transmitted from the lower surface portion to the lower wall portion of the rocker outer panel and also transmitted from the upper surface portion to the upper wall portion of the rocker outer panel.

  Here, since the load transmission member of the present invention is formed of a resin structure, it can be manufactured as a solid member or a frame. Therefore, various configurations can be established according to the load transmission performance, and the degree of freedom in design increases.

  According to the sixth aspect of the present invention, the floor tunnel extends along the vehicle front-rear direction at the vehicle width direction intermediate portion of the vehicle body floor. A side collision detection sensor is installed in the floor tunnel. For this reason, it takes time until the collision load at the time of the side collision is transmitted to the side collision detection sensor. However, according to the present invention, since the load transmission performance is improved, the collision load is quickly transmitted also to the side collision detection sensor installed in the floor tunnel.

  As described above, the vehicle side part structure according to the present invention according to claim 1 can improve the load transmission performance to the side collision detection sensor when a collision body such as a pole collides with the vehicle side part. It has an excellent effect.

  The vehicle side part structure according to the present invention described in claim 2 is excellent in that it can improve the load transmission performance to the side collision detection sensor when a collision body such as a pole collides with the vehicle side part at low cost. Has an effect.

  The vehicle side part structure according to the third aspect of the present invention has an excellent effect that the load transmission performance can be stabilized.

  The vehicle side part structure according to the present invention as set forth in claim 4 provides the load transmission performance to the side collision detection sensor when a collision body such as a pole collides with the vehicle side part at low cost without increasing the number of parts. It has an excellent effect that it can be further improved.

  The vehicle side part structure according to the present invention described in claim 5 can easily adjust (tune) the load transmission performance to the side collision detection sensor when a collision body such as a pole collides with the vehicle side part. It has an excellent effect.

  The vehicle body structure according to the present invention described in claim 6 has an excellent effect that the side collision state can be quickly detected even when the side collision detection sensor is installed in the floor tunnel.

It is a principal part expansion perspective view which expands and shows the principal part of the vehicle side part structure which concerns on 1st Embodiment. It is a longitudinal cross-sectional view which expands and shows the longitudinal cross-section structure of the assembly | attachment state of the bracket shown by FIG. 1, (A) is the sectional view on the 2 (A) -2 (A) line of FIG. 3, (B) is a figure. 3 is a cross-sectional view taken along line 2 (B) -2 (B). 1 is a perspective view showing an overall configuration of a vehicle side part structure and a vehicle body structure according to a first embodiment. It is a longitudinal cross-sectional view for demonstrating an effect | action when collision bodies, such as a pole, collide in the vehicle side part structure and vehicle body structure which concern on 1st Embodiment. It is a longitudinal cross-sectional view corresponding to FIG. 4 which expands and shows the principal part of the vehicle side part structure and vehicle body structure which concern on 2nd Embodiment.

[First Embodiment]
Hereinafter, a first embodiment of a vehicle side part structure and a vehicle body structure according to the present invention will be described with reference to FIGS. It should be noted that an arrow FR appropriately shown in these drawings indicates a vehicle front side, an arrow UP indicates a vehicle upper side, an arrow IN indicates a vehicle width direction inner side, and an arrow OUT indicates a vehicle width direction outer side. Is shown.

  FIG. 3 shows a perspective view of the body structure around the vehicle body floor. As shown in this figure, a floor tunnel 12 having an open cross-sectional shape in which a vertical cross-sectional shape is formed in a hat shape and a lower side of the vehicle is opened is formed along the vehicle front-rear direction in the middle portion of the vehicle body floor 10 in the vehicle width direction. It is arranged. Further, rockers 14 having a closed cross-sectional structure having a longitudinal cross-sectional shape formed in a substantially rectangular shape are disposed at both ends in the vehicle width direction of the vehicle body floor 10 along the vehicle front-rear direction. A floor cross member 16 having a longitudinal cross-sectional shape formed in a hat shape is bridged between the middle portions in the longitudinal direction of the left and right rockers 14 along the vehicle width direction. A closed cross-section structure is formed by joining the lower end portion of the floor cross member 16 to the vehicle body floor 10.

  Supplementing the configuration so far, the above-described configuration is grasped as “vehicle lower structure” or “vehicle lower structure” when the vehicle body floor 10 is centered, but the rocker 14 is arranged at the lower end of the vehicle side. When viewed from that viewpoint, the rocker 14 is grasped as a part of “vehicle body side structure” or “vehicle side part structure”.

  The vehicle side portion 18 is formed with a door opening 20 that is opened and closed by a side door (not shown). The rocker 14 described above is disposed on the lower edge side of the door opening 20. A roof side rail (not shown) extends along the vehicle front-rear direction on the upper edge side of the door opening 20. Further, a front pillar 22 is erected on the front side of the door opening 20, and a rear pillar 24 is disposed on the rear side.

  The rocker 14 described above includes a rocker inner panel 26 disposed on the inner side in the vehicle width direction, a rocker outer panel (rocker reinforcement) 28 disposed on the outer side of the rocker inner panel 26 in the vehicle width direction, and the rocker outer panel 28 as a vehicle. And a side outer panel 30 covering from the outside in the width direction.

  As shown in FIG. 1 and FIGS. 2A and 2B, the rocker inner panel 26 is cut in the vertical direction of the vehicle and in the vehicle width direction, and the shape of the longitudinal cross section viewed from the front side of the vehicle is a hat. It is made into a shape. Structurally, the rocker inner panel 26 includes a vertical wall portion 26A extending in the vertical direction of the vehicle and a lower wall portion extending outward in the vehicle width direction from the lower end portion of the vertical wall portion 26A in a longitudinal sectional view. 26B, a lower flange portion 26C bent from the lower end portion of the lower wall portion 26B to the vehicle lower side, an upper wall portion 26D extending outward from the upper end portion of the vertical wall portion 26A, and the upper And an upper flange portion 26E bent upward from the outer end portion of the wall portion 26D. An end portion 10A of the vehicle body floor 10 on the outer side in the vehicle width direction is joined to the lower portion of the vertical wall portion 26A.

  On the other hand, the rocker outer panel 28 also has a hat shape when viewed along the vehicle vertical direction and the vehicle width direction and viewed from the front side of the vehicle. Further, structurally, the vertical wall portion 28A extending in the vertical direction of the vehicle in a longitudinal sectional view, the lower wall portion 28B extending outward from the lower end portion of the vertical wall portion 28A in the vehicle width direction, A lower flange portion 28C bent downward from the lower end portion of the wall portion 28B, an upper wall portion 28D extending outward from the upper end portion of the vertical wall portion 28A, and the outer side of the upper wall portion 28D. And an upper flange portion 28E bent upward from the end portion of the vehicle. A groove-shaped bead 32 that is recessed inward in the vehicle width direction is formed in the vehicle vertical direction intermediate portion of the vertical wall portion 28A along the vehicle longitudinal direction.

  The lower flange portion 26C of the rocker inner panel 26 and the lower flange portion 28C of the rocker outer panel 28 are welded, and the upper flange portion 26E of the rocker inner panel 26 and the upper flange portion 28E of the rocker outer panel 28 are welded. . As a result, the rocker 14 has a closed cross-sectional structure in which the cross-sectional shape is rectangular.

  As shown in FIGS. 1 to 3, a metal bracket 34 as a load transmitting member is attached to the outer surface of the vertical wall portion 28 </ b> A of the rocker outer panel 28 by welding. Hereinafter, the configuration of the bracket 34 will be described in detail.

  As shown in FIG. 3, the bracket 34 is disposed at a predetermined position in the vehicle front-rear direction of the rocker outer panel 28 and is partially provided with respect to the rocker 14 extending in the vehicle front-rear direction. When the arrangement position of the bracket 34 is viewed in relation to the door opening 20, the bracket 34 is arranged near the middle portion of the lower edge of the door opening 20 in the vehicle front-rear direction. When the arrangement position of the bracket 34 is viewed in relation to the floor cross member 16, the bracket 34 is arranged offset to the vehicle rear side with respect to the floor cross member 16.

  As shown in FIGS. 1 and 2, the bracket 34 includes a bracket-side vertical wall portion 34 </ b> A that extends along the vehicle vertical direction in a longitudinal sectional view, and a lower edge of the bracket-side vertical wall portion 34 </ b> A. The bracket-side lower wall portion 34B extended inward in the vehicle width direction and the bracket-side upper wall portion 34C extended inward in the vehicle width direction from the upper edge of the bracket-side vertical wall portion 34A. Therefore, the vertical cross-sectional shape of the bracket 34 is a substantially hat shape.

  More specifically, the bracket-side vertical wall portion 34A is disposed substantially parallel to the vertical wall portion 28A of the rocker outer panel 28 so as to be separated (opposed) outward in the vehicle width direction. A plurality of first beads 36 having a longitudinal direction in the vehicle front-rear direction are integrally formed on the bracket-side vertical wall portion 34A. In the present embodiment, the first beads 36 are formed in two upper and lower stages, but the number of beads formed is not limited. In the present embodiment, the first bead 36 is formed as a concave bead that is recessed inward in the vehicle width direction, but is not limited thereto, and may be formed as a convex bead that protrudes outward in the vehicle width direction.

  Further, the bracket-side lower wall portion 34B is disposed on the extending direction of the lower wall portion 28B of the rocker outer panel 28. A tip end portion 34B '(inner end portion) of the bracket-side lower wall portion 34B is superposed on the lower wall portion 28B of the rocker outer panel 28 from below the vehicle and fixed by welding. That is, the bracket-side lower wall portion 34B is substantially connected to the first ridge line portion 38 formed at the connection portion between the vertical wall portion 28A and the lower wall portion 28B of the rocker outer panel 28.

  Further, the bracket-side upper wall portion 34C includes an inclined wall portion 34C1 that is inclined so that the outer side in the vehicle width direction is located on the vehicle lower side with respect to the inner side when viewed from the vehicle front side, and the upper end portion of the inclined wall portion 34C1 And an inner flange portion 34C2 bent inward in the vehicle width direction. A plurality of second beads 40 are integrally formed on the inclined wall portion 34C1 along the vehicle longitudinal direction. In the present embodiment, the second bead 40 is formed at two positions, front and rear, but the number of beads formed is not limited. The second bead 40 is formed as a concave bead that is recessed toward the vehicle lower side, and includes an inner wall 40A, a bottom wall 40B, and left and right side walls 40C. Among these, the inner wall 40 </ b> A is arranged in a state of being in contact with (or close to) the vertical wall portion 28 </ b> A of the rocker outer panel 28. On the other hand, the inner flange portion 34C2 is overlapped on the upper wall portion 28D of the rocker outer panel 28 from above the vehicle and fixed by welding. In other words, the bracket-side upper wall portion 34C is connected to the second ridge line portion 42 present at the connection portion between the vertical wall portion 28A and the upper wall portion 28D of the rocker outer panel 28.

  Further, the length L (see FIG. 2B) of the bracket-side upper wall portion 34C described above from the inner side surface of the bracket-side upper wall portion 34C to the outer side surface of the vertical wall portion 28A of the rocker outer panel 28. Is set longer than the distance W of

  Further, as shown in FIG. 3, a side collision detection sensor 44 for detecting a side collision state is attached to a predetermined position of the upper wall portion 12A of the floor tunnel 12 described above via a mounting bracket (not shown). Yes. In the present embodiment, a mechanical acceleration sensor is used as the side collision detection sensor 44.

  The bracket side vertical wall portion 34A corresponds to the “load receiving portion” and “second vertical wall portion” in the present invention, and the bracket side lower wall portion 34B corresponds to the “lower load transmitting portion” and “second lower wall portion” in the present invention. The bracket side lower wall portion 34B corresponds to the “upper load transmitting portion” and the “second upper wall portion” in the present invention.

(Action / Effect)
Next, the operation and effect of this embodiment will be described.

  As shown in FIG. 4, when a collision body 46 such as a pole collides with the door opening 20 on the side of the vehicle, the collision load F by the collision body 46 is arranged on the lower edge side of the door opening 20. Input to the rocker 14.

  Here, in the present embodiment, the bracket-side vertical wall portion 34A is located at a position spaced outward in the vehicle width direction with respect to the vertical wall portion 28A of the rocker outer panel (Rocka reinforcement) 28 formed in a hat shape in a longitudinal sectional view. Is located. Accordingly, the collision load F from the collision body 46 is input to the bracket-side vertical wall portion 34A before the vertical wall portion 28A of the rocker outer panel 28.

  From the lower edge of the bracket side vertical wall portion 34A, the bracket side lower wall portion 34B extends inward in the vehicle width direction and is connected (joined) to the lower wall portion 28B of the rocker outer panel 28 by welding. In addition, the bracket-side upper wall portion 34C extends from the upper edge of the bracket-side vertical wall portion 34A to the inside in the vehicle width direction and is connected (joined) to the upper wall portion 28D of the rocker outer panel 28 by welding. Therefore, the collision load F input to the bracket side vertical wall portion 34A is directly transmitted from the bracket side lower wall portion 34B to the lower wall portion 28B of the rocker outer panel 28 (this load transmission path is indicated by an arrow F1). .), And is directly transmitted from the bracket-side upper wall portion 34C to the upper wall portion 28D of the rocker outer panel 28 (this load transmission path is indicated by an arrow F2). The collision load passing through the load transmission path F1 is transmitted to the top wall portion 16A of the floor cross member 16 (the load at this time is indicated by an arrow F3). Further, the collision load passing through the load transmission path F2 is transmitted to the floor tunnel 16 through the vehicle body floor 10 (the load at this time is indicated by an arrow F4). As a result, the side collision load is transmitted to the side collision detection sensor 44.

  Further, since the rocker outer panel 28 is formed in a hat shape in the longitudinal sectional view as described above, the first ridge line portion 38 and the vertical wall portion formed at the connection portion between the vertical wall portion 28A and the lower wall portion 28B. The rigidity of the 2nd ridgeline part 42 formed in the connection site | part of 28A and upper wall part 28D is the highest. Also, the first ridge line portion 38 and the second ridge line portion 42 are the best in load transmission performance. In the present embodiment, paying attention to this point, the relationship between the rocker outer panel 28 and the bracket 34 having such a structure is closely examined, and the bracket is not simply disposed outside the rocker outer panel 28 in the vehicle width direction. The bracket-side lower wall portion 34B and the bracket-side upper wall portion 34C so that the side collision load F input to the vertical wall portion 34A is directly transmitted to the lower wall portion 28B and the upper wall portion 28D of the rocker outer panel 28. Was provided. Thereby, the collision load F at the time of a side collision is transmitted to the rocker 14 quickly and directly, and further to the side collision detection sensor 44.

  As described above, according to the vehicle side part structure and the vehicle body structure according to the present embodiment, it is possible to improve the load transmission performance to the side collision detection sensor 44 when the collision body 46 such as a pole collides with the vehicle side part. .

  Moreover, in this embodiment, since the load transmission member is comprised with the metal brackets 34, manufacture is easy. Therefore, according to this embodiment, the load transmission performance to the side collision detection sensor when the collision body 46 such as a pole collides with the vehicle side portion can be improved at low cost.

  Further, in the present embodiment, the length L in the vehicle vertical direction of the bracket vertical wall portion 28A is longer than the distance W between the inner side surface of the bracket side vertical wall portion 34A and the outer side surface of the vertical wall portion 28A of the rocker outer panel 28. Since it is set, it is difficult to roll when the bracket 34 receives a collision load F at the time of a side collision, as compared with a case where a load transmitting member having an opposite relationship is used. For this reason, variation in the collision load to be transmitted to the rocker outer panel 28 due to the fall of the load transmitting member is suppressed. As a result, according to this embodiment, the load transmission performance can be stabilized.

  In the present embodiment, since the first bead 36 whose longitudinal direction is the longitudinal direction of the vehicle is formed on the bracket-side vertical wall portion 34A, the rigidity of the bracket-side vertical wall portion 34A is increased. For this reason, when the collision body 46 such as a pole collides with the bracket side vertical wall portion 34A from the outside in the vehicle width direction, the bracket side vertical wall portion 34A is not easily broken. Further, since the second bead 40 whose longitudinal direction is the vehicle width direction is formed on the bracket-side upper wall portion 34C, the rigidity of the bracket-side upper wall portion 34C is increased with respect to load input from the vehicle width direction. . For this reason, when the collision body 46 such as a pole collides with the bracket-side vertical wall portion 34A from the outside in the vehicle width direction, the bracket-side upper wall portion 34C becomes difficult to buckle in the vehicle width direction. As a result, according to the present embodiment, the load transmission performance to the side collision detection sensor 44 when the collision body 46 such as a pole collides with the vehicle side portion at a low cost without increasing the number of parts is further increased. Can be improved.

  In addition, in the vehicle body structure according to the present embodiment, the floor tunnel 12 extends along the vehicle front-rear direction at the vehicle width direction intermediate portion of the vehicle body floor 10. A side collision detection sensor 44 is installed on the upper wall portion 28D of the floor tunnel 12. For this reason, it takes time until the collision load F at the time of a side collision is transmitted to the side collision detection sensor 44. However, according to the present embodiment, since the load transmission performance of the collision load F is improved, the collision load is quickly transmitted also to the side collision detection sensor 44 installed on the upper wall portion 28D of the floor tunnel 12. Therefore, according to the present embodiment, even when the side collision detection sensor 44 is installed on the upper wall portion 28D of the floor tunnel 12, the side collision state can be quickly detected.

[Second Embodiment]
Next, a second embodiment of a body structure provided with a side collision detection sensor according to the present invention will be described with reference to FIG. In addition, about the same component as 1st Embodiment mentioned above, the same number is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 5, the second embodiment is characterized in that a resin load transmission member 50 is used instead of the metal bracket 34. The load transmitting member 50 is formed in a solid block shape having a trapezoidal longitudinal cross-sectional shape. More specifically, the load transmitting member 50 includes a contact portion 50A that extends in the vehicle vertical direction in a longitudinal sectional view and contacts the vehicle lateral direction outer surface of the vertical wall portion 28A of the rocker outer panel 28; An upright portion 50B that is spaced apart from the vertical wall portion 28A of the rocker outer panel 28 in the vehicle width direction and extends along the vehicle vertical direction in a longitudinal sectional view, and a lower edge of the contact portion 50A A lower surface portion 50C that connects the lower edge of the vertical surface portion 50B in the vehicle width direction, and an upper surface portion 50D that connects the upper edge of the contact portion 50A and the upper edge of the vertical surface portion 50B in the vehicle width direction. . The elevation surface portion 50B corresponds to the load receiving portion in the present invention, the lower surface portion 50C corresponds to the lower load transmission portion in the present invention, and the upper surface portion 50D corresponds to the upper load transmission portion in the present invention.

The contact portion 50A is fixed to the outer surface in the vehicle width direction of the vertical wall portion 28A of the rocker outer panel 28 by fixing means such as an adhesive, a rivet, a bolt, and a nut (not shown). In a state where the contact portion 50A is fixed, the groove-shaped bead 32 is closed by the contact portion 50A. Further, the vertical surface portion 50B functions as a load receiving portion at the time of a side collision. Further, the lower surface portion 50C is disposed (connected) so as to be substantially connected to the lower wall portion 28B (first ridge line portion 38) of the rocker outer panel 28. The upper surface portion 50D is arranged (connected) so as to be substantially connected to the upper wall portion 28D (second ridge line portion 42) of the rocker outer panel 28.

(Action / Effect)
According to the above configuration, when a collision body 46 such as a pole collides with the vicinity of the middle portion of the door opening 20 in the vehicle front-rear direction, the collision load at that time is outside of the vertical wall portion 28A of the rocker outer panel 28 in the vehicle width direction. Is input to the upright surface portion 50B that is spaced apart. The input collision load F is transmitted from the lower surface portion 50C to the lower wall portion 28B of the rocker outer panel 28 and also transmitted from the upper surface portion 50D to the upper wall portion 28D of the rocker outer panel 28. Supplementally, as described above, the bead 32 is formed in the longitudinal wall portion 28A of the rocker outer panel 28 along the vehicle front-rear direction, and the contact portion 50A of the load transmitting member 50 is disposed so as to close it. Therefore, the collision load input to the vertical surface portion 50B is transmitted in the vertical direction with the bead 32 as a boundary.

  Here, in this embodiment, since the load transmission member 50 is made of resin, the degree of freedom in shape is high. For example, if it is possible to configure the load transmitting member 50 as a solid member as in the present embodiment, it is possible to form a frame structure without making it solid, and to bridge the vehicle as viewed in the vehicle longitudinal direction. It is also possible to adopt a rib structure in which a large number of ribs are arranged in the vehicle longitudinal direction and connected to each other. Therefore, the degree of freedom in design is high and the load transmission performance can be easily adjusted (tuned).

[Supplementary explanation of this embodiment]
Hereinafter, some supplementary explanations will be given for the above-described embodiment.

  In the above-described embodiment, the present invention is applied to the front side door 12 side as an example. However, the present invention is not limited to this, and the present invention may be applied to the rear side door side.

  In the first embodiment, as shown in FIGS. 2 (A) and 2 (B), the shape of the bracket 34 in the longitudinal sectional view is a hat shape, but this is also related to the design. I am doing so. However, if the vehicle design is not restricted, the upper wall may be a horizontal wall. In that case, the second bead may be provided with concave beads having a longitudinal direction in the vehicle width direction at a predetermined interval in the vehicle front-rear direction. What is important is to connect the upper wall portion side of the bracket to the upper wall portion (second ridge line portion) of the rocker outer panel.

DESCRIPTION OF SYMBOLS 14 Rocker 18 Vehicle side part 20 Door opening part 28 Rocker outer panel 28A Vertical wall part 28B Lower wall part 28D Upper wall part 34 Bracket (load transmission member)
34A Bracket side vertical wall (load receiving part, second vertical wall)
34B Bracket side lower wall part (lower load transmission part, second lower wall part)
34C Bracket side upper wall part (upper load transmission part, second lower wall part)
36 1st bead 38 1st ridgeline part 40 2nd bead 42 2nd ridgeline part 44 Side collision detection sensor 50 Load transmission member 50B Elevation part (load receiving part)
50C bottom surface (under load transmission part)
50D Upper surface part (upper load transmission part)

Claims (6)

Longitudinal section viewed from the front side of the vehicle, forming a part of a rocker having a closed cross-sectional structure disposed along the vehicle longitudinal direction on the lower edge side of the door opening, cut along the vehicle vertical direction and the vehicle width direction The shape of the view is a hat shape, and includes a vertical wall portion extending along the vehicle vertical direction in the longitudinal sectional view, and a lower wall portion and an upper wall portion extending along the vehicle width direction. A rocker outer panel,
A vertical wall-shaped load receiving portion arranged at a position spaced outward from the vertical wall portion in the vehicle width direction, and extended inward in the vehicle width direction from the lower edge side of the load receiving portion and connected to the lower wall portion. A load transmitting member comprising: a lower load transmitting portion; and an upper load transmitting portion that extends from the upper edge side of the load receiving portion to the inside in the vehicle width direction and is connected to the upper wall portion;
A vehicle side part structure. The load transmission member extends in the vehicle vertical direction in the longitudinal sectional view and is arranged to face the vehicle width direction outer side with respect to the vertical wall portion, and the second vertical wall portion. A second lower wall portion extending inward in the vehicle width direction from the lower edge of the wall portion and fixed to the lower wall portion; and extending inward in the vehicle width direction from the upper edge of the second vertical wall portion. A second upper wall portion fixed to the upper wall portion, and a metal bracket configured to include:
The vehicle side part structure according to claim 1. The length of the second vertical wall portion in the vehicle vertical direction is set to be longer than the distance between the second vertical wall portion and the vertical wall portion of the rocker outer panel.
The vehicle side part structure according to claim 2. A first bead whose longitudinal direction is the vehicle longitudinal direction is formed on the second vertical wall portion, and a second bead whose longitudinal direction is the vehicle width direction is formed on the second upper wall portion. ,
The vehicle side part structure according to claim 2 or claim 3. The load transmitting member extends in the vertical direction of the vehicle in the longitudinal cross-sectional view and is spaced apart from the vertical wall in the vehicle width direction, and below the vertical surface A lower surface portion extending inward in the vehicle width direction from the edge and connected to the lower wall portion, and an upper surface portion extending inward in the vehicle width direction from the upper edge of the vertical surface portion and connected to the upper wall portion And a resin-made structure configured to include:
The vehicle side part structure according to claim 1. A floor tunnel that is arranged in the vehicle width direction intermediate portion of the vehicle body floor and extends in the vehicle longitudinal direction, and is provided with a side collision detection sensor that detects a collision load at the time of a side collision;
A pair of left and right rockers provided with the load transmitting member according to any one of claims 1 to 5,
Body structure with

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