JP2009214791A - Vehicle body side structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a vehicle body side structure can improve sensing performance by efficiently transmitting load upon side surface collision to a floor. <P>SOLUTION: A flat plate type lower surface part 26C roughly horizontally extended in the inner side in a vehicle width direction is provided on a lower part side of a door outer panel 26, and a vertical wall part 26D extended from an edge part in the inner side in the vehicle width direction of the lower surface part 26C to the vehicle lower side and a lower edge part of a vertical wall part 28B of a door inner panel 28 are joined. A rocker 16 is located at a position facing the vertical wall part 28B of the door inner panel 28, and an edge part 24A of a floor panel 24 is jointed to a transverse wall part 21B formed at a rocker inner panel 20 of the rocker 16 in a roughly horizontal state. The lower surface part 26C of the door outer panel 26, the transverse wall part 21B, and the floor panel 24 are located at the roughly same level. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vehicle body side part structure in consideration of a side collision.

  Patent Document 1 below discloses a structure in which a closed cross-sectional portion is provided along the vehicle front-rear direction at a lower portion of a door, and a load at the time of a side collision is transmitted to the pillar via the closed cross-sectional portion.

Patent Document 2 below discloses a structure in which a load transmission member is provided at an end of an impact beam, and a load at the time of a side collision is transmitted from the impact beam to the pillar via the load transmission member.
Japanese Patent Laid-Open No. 2004-82797 JP 2006-321444 A

  However, in the prior art 1 or the prior art 2, when a sensor is provided at a predetermined position on the floor, the load transmission path at the time of a side collision is as follows: closed cross section or impact beam, pillar, rocker, floor, sensor. Become. For this reason, in order to improve the sensing performance at the time of a side collision, it is necessary to raise the rigidity of each member, and mass and cost may increase.

  In view of the above facts, an object of the present invention is to obtain a vehicle body side structure capable of efficiently transmitting a load at the time of a side collision to a floor and improving sensing performance.

  According to a first aspect of the present invention, a closed cross section is formed by a door outer panel forming a vehicle design surface, a side door including a door inner panel disposed on the vehicle inner side of the door outer panel, a rocker outer panel, and a rocker inner panel. And a rocker disposed along the vehicle front-rear direction on the vehicle inner side of the lower part of the side door, the vehicle body side part structure, provided at the lower part of the side door, A flat plate-like lower end portion extending substantially horizontally from the vehicle design surface toward the vehicle inner side, a joining surface extending substantially horizontally inside the vehicle of the rocker inner panel, and an end portion in the vehicle width direction are joined. And a floor panel to which a side collision detection sensor for detecting a side collision state is attached, and the lower end and the joining surface are disposed at substantially the same height as the floor panel. The features.

  According to a second aspect of the present invention, in the vehicle body side part structure according to the first aspect, the lower end portion is formed by the door outer panel.

  According to a third aspect of the present invention, in the vehicle body side part structure according to the first aspect, the lower end portion is formed by the door outer panel and the door inner panel.

  According to a fourth aspect of the present invention, in the vehicle body side part structure according to any one of the first to third aspects, a vehicle exterior design surface and a vehicle inner side surface are provided below the lower end portion of the side door. It is characterized in that a door lower molding is formed.

  According to a fifth aspect of the present invention, in the vehicle body side part structure according to any one of the first to fourth aspects, the cushion rubber is disposed at a position overlapping the rocker on the vehicle inner surface of the door inner panel in a vehicle side view. And the cushion rubber is disposed at substantially the same height as the lower end portion, the joint surface, and the floor panel.

  According to the first aspect of the present invention, the flat bottom end portion extends substantially horizontally from the vehicle design surface to the vehicle inner side at the lower portion of the side door, and the joint surface is formed on the vehicle inner side of the rocker inner panel. It extends substantially horizontally at substantially the same height as the lower end, and the end of the floor panel in the vehicle width direction is joined to this joining surface. When the colliding body collides with the side door, the side door is provided with a flat lower end, so that the deformation of the cross section is suppressed, and the lower end enters the vehicle inside (vehicle compartment side) as it is. The load is transmitted to the rocker by contacting the position of the same height as the floor panel. The load transmitted to the rocker is further efficiently transmitted to the floor panel at substantially the same height as the joint surface through the joint surface of the rocker inner panel provided at substantially the same height as the lower end. When the load is transmitted to the floor panel, the side collision state is detected by the side collision detection sensor attached to the floor panel. Thereby, the load at the time of a side collision is transmitted to a side door, a rocker, and a floor, without providing another load transmission member, and sharpening of sensing can be realized at a light weight and at low cost.

  According to the second aspect of the present invention, at the time of a side collision, the side door is restrained from being deformed in cross section by the flat plate-like lower end portion formed by the door outer panel, and the lower end portion is the vehicle inner side (vehicle compartment side) as it is. The load can be efficiently transmitted to the rocker by intruding into the rocker and coming into contact with the position of almost the same height as the floor panel of the rocker.

  According to the third aspect of the present invention, at the time of a side collision, the side door is restrained from being deformed in cross section by a flat plate-like lower end formed by a door outer panel and a door inner panel, and the lower end is left as it is inside the vehicle (vehicle It can enter the room side) and come into contact with the position of almost the same height as the floor panel of the rocker, so that the load can be efficiently transmitted to the rocker.

  According to the fourth aspect of the present invention, the door lower molding is provided on the lower side of the lower end portion of the side door, and the conventional door shape is supplemented by the vehicle exterior design surface and the vehicle inner surface of the door lower molding. Can do.

  According to the fifth aspect of the present invention, the cushion rubber is provided at a position overlapping the rocker on the vehicle inner side surface of the door inner panel in a side view of the vehicle, and the flat lower end portion of the side door is the vehicle at the side collision. When entering the inside (vehicle compartment side), the cushion rubber disposed at substantially the same height as the lower end portion comes into contact with a position at substantially the same height as the floor panel of the rocker. Thereby, a load is more efficiently transmitted from the side door to the rocker through the cushion rubber. The load transmitted to the rocker is further transmitted to the floor panel at substantially the same height as the joint surface through the joint surface of the rocker inner panel provided at substantially the same height as the lower end portion and the cushion rubber. Therefore, by providing the cushion rubber, the free running distance until it hits the rocker of the side door is reduced, and the steep sensing can be realized more effectively.

  As described above, the vehicle body side structure according to the present invention according to claim 1 is excellent in that the load at the time of a side collision can be efficiently transmitted from the side door to the floor panel and the sensing performance can be improved. Has an effect.

  The vehicle body side structure according to the second aspect of the present invention has an excellent effect that the lower end portion is formed by the door outer panel, and that the steep sensing can be realized at a low weight and at low cost.

  The vehicle body side structure according to the third aspect of the present invention has an excellent effect that the lower end portion is formed by the door outer panel and the door inner panel, and that the steep sensing can be realized at a light weight and at low cost. Have.

  The vehicle body side structure according to the fourth aspect of the present invention has an excellent effect that the conventional door shape can be supplemented by the door lower molding provided on the lower side of the lower end portion of the side door.

  In the vehicle body side part structure according to the present invention described in claim 5, by providing cushion rubber on the vehicle inner side surface of the door inner panel, the idle running distance until it hits the rocker is reduced, and the load at the time of a side collision is further improved. Therefore, it has an excellent effect that it can be transmitted to the floor panel.

  [First Embodiment]

  Hereinafter, a first embodiment of a vehicle body side part structure according to the present invention will be described with reference to FIGS. 1 and 2. Note that an arrow UP appropriately shown in these drawings indicates the vehicle upper side, and an arrow IN indicates the inner side in the vehicle width direction.

  FIG. 1 shows a longitudinal sectional view of the vehicle body side structure around the front side door. As shown in this figure, the vehicle body side portion 10 is formed with a door opening 14 that is opened and closed by a front side door 12. On the lower edge side of the door opening 14, a rocker 16 having a closed cross-sectional structure extending along the vehicle front-rear direction is disposed on the inner side in the vehicle width direction of the lower portion 12 </ b> A of the front side door 12.

  The rocker 16 is a vehicle skeleton member, and is formed in a substantially hat-shaped cross section, and is disposed on the outer side in the vehicle width direction (outside the vehicle compartment), and the rocker disposed on the inner side in the vehicle width direction (inside the vehicle cabin). The inner panel 20 and the cyclic panel 22 having a substantially hat-shaped cross section that is fitted to the outer side in the vehicle width direction of the rocker outer panel 18 are configured as main parts. The rocker inner panel 20 has a substantially hat-shaped cross section and a shape including a recess 21 whose upper portion on the inner side in the vehicle width direction is recessed. The concave portion 21 includes a vertical wall portion 21A arranged along the vehicle vertical direction, and a horizontal wall portion 21B as a joint surface extending substantially horizontally from the lower end portion of the vertical wall portion 21A along the vehicle width direction. Is formed.

  The rocker outer panel 18 and the rocker inner panel 20 are formed in a closed cross-section structure by joining a pair of upper and lower flange portions. Further, the pair of upper and lower flange portions of the siemen panel 22 are joined to the pair of upper and lower flange portions of the rocker outer panel 18 from the outside in the vehicle width direction. A concave portion 22 </ b> A that is recessed in the vehicle width direction inside is formed in the middle portion of the cycle panel 22.

  A lower surface portion of an end portion 24A provided on the outer side in the vehicle width direction with respect to the general surface 24B of the floor panel 24 is joined to the upper surface of the lateral wall portion 21B of the rocker inner panel 20 by welding. The end 24A and the general surface 24B of the floor panel 24 are disposed substantially horizontally along the vehicle width direction.

  The front side door 12 includes a door outer panel 26 disposed on the outer side in the vehicle width direction, a door inner panel 28 disposed on the inner side in the vehicle width direction, and a door lower molding 30 provided on the lower side of the vehicle. It is configured. On the lower side of the door inner panel 28, a step portion 28A formed substantially horizontally outward in the vehicle width direction and a vertical wall portion 28B formed along the vehicle vertical direction downward from the vehicle outer end portion of the step portion 28A. And are provided. The vertical wall portion 28B has a shape in which the lower portion protrudes slightly inward in the vehicle width direction from the upper portion. The vertical wall portion 28 </ b> B is provided at a position overlapping the rocker 16 in a side view of the vehicle (position facing the siemen panel 22). A recess formed by the stepped portion 28 </ b> A and the vertical wall portion 28 </ b> B of the door inner panel 28 is disposed at a position facing the upper end corner of the cycle panel 22.

  The outer wall portion 26A on the outer side in the vehicle width direction of the door outer panel 26 constitutes a vehicle design surface. In the lower part of the door outer panel 26, there are a recessed portion 26B recessed inward in the vehicle width direction from the lower end portion of the outer wall portion 26A, and a flat plate bent substantially inward in the vehicle width direction from the lower end portion of the recessed portion 26B and extending substantially horizontally. A lower surface portion 26C serving as a lower end of the shape, and a vertical wall portion 26D bent toward the vehicle lower side from the end portion of the lower surface portion 26C on the inner side in the vehicle width direction are provided. The vehicle inner side surface of the vertical wall portion 26D of the door outer panel 26 is joined by spot welding or laser welding while being in surface contact with the vehicle outer surface of the vertical wall portion 28B of the door inner panel 28. The lower surface portion 26C of the door outer panel 26, the lateral wall portion 21B of the rocker inner panel 20, and the floor panel 24 joined to the lateral wall portion 21B are arranged at substantially the same height.

  A door lower molding 30 is disposed below the recessed portion 26B and the lower surface portion 26C of the door outer panel 26. The door lower molding 30 includes an outer wall portion 30A that forms a vehicle exterior design surface, an inner wall portion 30B that forms a vehicle inner surface continuously from the lower end portion of the outer wall portion 30A toward the vehicle width direction, and an upper end portion of the outer wall portion 30A. And an extended portion 30 </ b> C that comes into contact with the recessed portion 26 </ b> B of the door outer panel 26. Furthermore, the door lower molding 30 includes an upper surface mounting portion 30D formed substantially horizontally so as to contact the lower surface portion 26C of the door outer panel 26 on the inner side in the vehicle width direction of the extending portion 30C, and the vehicle width direction of the upper surface mounting portion 30D. And an inner mounting portion 30E formed on the vehicle lower side so as to contact the vertical wall portion 26D of the door outer panel 26 from the inner end portion. On the outer side in the vehicle width direction of the inner mounting portion 30E of the door lower molding 30, a cutout portion 32 is formed along the vehicle vertical direction. A plurality of notches 32 are provided in the vehicle front-rear direction of the door lower molding 30. In FIG. 1, the cross section of the lower end portion of the notch 32 is omitted.

  A substantially circular hole 26E for attaching the clip 34 is formed in the vertical wall portion 26D of the door outer panel 26, and the vertical wall portion 28B of the door inner panel 28 is substantially positioned at a position matching the hole 26E. A circular hole 28C is formed. Further, a substantially circular hole 33 is formed at a position where the notch 32 of the inner mounting part 30E is formed at a position that coincides with the hole 26E and the hole 28C. By inserting the clip 34 into the holes 28C, 26E, and 33 from the side of the vertical wall portion 28B and locking the locking portion 34A to the inner mounting portion 30E, the door lower molding 30 is connected to the door outer panel 26 and the door inner. It is attached to the panel 28. The door lower molding 30 is attached to the door outer panel 26 and the door inner panel 28 by clips 34 at a plurality of positions in the vehicle longitudinal direction. The lower shape of the front side door 12 can be supplemented by the outer wall portion 30A and the inner wall portion 30B of the door lower molding 30.

  A sensor 38 for detecting a side collision state is provided on the upper surface of the floor panel 24 near the center of the vehicle. When a collision body such as a pole collides with the vehicle body side portion 10, a load is transmitted to the floor panel 24 to generate a rapid acceleration, and the acceleration is transmitted to the sensor 38 and input. As a result, the side collision state is detected by the sensor 38. In the vehicle of this embodiment, when a side collision state is detected by the sensor 38, an occupant protection device such as a head protection airbag device or a side airbag device (not shown) near the vehicle seat is activated. Is set.

  Next, the operation and effect of this embodiment will be described.

  As shown in FIG. 2, when a load in the vehicle inner direction (arrow A direction) acts on the front side door 12 due to a side collision of the collision body, the front side door 12 is provided with the lower surface portion 26 </ b> C. The deformation is suppressed (cross-sectional deformation is suppressed), and the lower surface portion 26C enters the vehicle inner side (vehicle compartment side) as it is, hits the position of the same level as the floor panel 24 of the cylinder panel 22, and moves toward the rocker 16 toward the vehicle inner side. A load in the direction of arrow B is transmitted. The load transmitted to the rocker 16 is further efficiently applied to the floor panel 24 at substantially the same height as the lateral wall portion 21B via the lateral wall portion 21B of the rocker inner panel 20 provided at substantially the same height as the lower surface portion 26C. Communicated. That is, the load at the time of a side collision is efficiently transmitted in a substantially horizontal direction from the lower surface portion 26C of the front side door 12 to the lateral wall portion 21B and the floor panel 24 of the rocker inner panel 20 having substantially the same height. At that time, the floor panel 24 receives the load at the time of a side collision in the shearing direction, so that the end 24A of the floor panel 24 is difficult to peel off from the lateral wall 21B.

  When the load is transmitted to the floor panel 24, a rapid acceleration is generated, and the acceleration is transmitted to and input to the sensor 38, whereby a side collision state is detected. Thereby, the load at the time of a side collision can be efficiently transmitted to the front side door 12, the rocker 16, and the floor panel 24 without providing another load transmission member, and the steep sensing can be realized.

  Here, the vehicle body side structure of the present embodiment will be described in comparison with a vehicle body side structure (not shown) of a comparative example in which the lower surface portion 26C and the door lower molding 30 are not provided in the lower portion of the front side door 12. In the vehicle body side structure of the comparative example, the outer shape of the front side door is formed substantially the same as the outer shape with the door lower molding, and the lower part of the front side door is the lower end of the door outer panel and the lower end of the door inner panel. It is formed by joining. In the vehicle body side structure of such a comparative example, the load at the time of a side collision is the vehicle on the front side door, the impact beam arranged along the vehicle front-rear direction in the front side door, and the rear side of the front side door. Transmission is performed in the order of the center pillar arranged along the vertical direction, the rocker 16 provided at the lower part of the center pillar, and the floor panel 24 joined to the rocker 16.

  On the other hand, in the vehicle body side part structure of the present embodiment, the load at the time of a side collision is an impact beam (not shown) arranged in the front side door 12 or a center pillar ( It is transmitted directly from the lower surface portion 26C of the door outer panel 26 to the rocker 16 and the floor panel 24 without going through (not shown). Thereby, the steepness of sensing by the sensor 38 can be realized. Therefore, for example, an occupant protection device such as a head protection airbag device or a side airbag device can be operated more quickly.

  For example, when the pole collides with the front side door 12 at the side of the vehicle seat (when the pole collides), the lower surface portion of the door outer panel 26 with respect to a local input to the front side door 12. The load can be directly transmitted from 26C to the rocker 16 and the floor panel 24. For this reason, it is possible to realize steep sensing even at the time of pole-side collision, which is generally difficult to detect with a sensor.

  Moreover, in the vehicle body side structure of this embodiment, it is not necessary to reinforce the front side door 12 by applying mass to increase the rigidity, and weight reduction can be realized.

  Furthermore, by providing the door lower molding 30 on the lower side of the lower surface portion 26C of the front side door 12, the conventional door shape can be supplemented by the outer wall portion 30A and the inner wall portion 30B of the door lower molding 30.

  [Second Embodiment]

  Below, 2nd Embodiment of the vehicle body side part structure which concerns on this invention is described. 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. 3, the front side door 52 of the vehicle body side portion 50 includes a door outer panel 54 disposed on the vehicle width direction outer side, a door inner panel 56 disposed on the vehicle width direction inner side, and a vehicle lower side. The arranged door lower molding 58 is configured as a main part. At the bottom of the door outer panel 54, a lower surface portion 54A as a flat plate-like lower end portion that is bent inward in the vehicle width direction from the lower end portion of the recess portion 26B and extends substantially horizontally, and the vehicle width direction of the front side door 52 A bent portion 54B that is bent at a substantially right angle from the lower surface portion 54A to the vehicle lower side is provided at the intermediate portion. Also, at the lower part of the door inner panel 56, there are a lower surface portion 56A as a flat lower end portion bent from the lower end portion of the vertical wall portion 28B outward in the vehicle width direction and extending substantially horizontally, and a lower surface portion 56A. A bent portion 56B that is bent substantially at a right angle on the vehicle lower side and is in surface contact with the bent portion 54B of the door outer panel 54 is provided. The bent part 54B of the door outer panel 54 and the bent part 56B of the door inner panel 56 are joined by spot welding or laser welding while being in surface contact. The lower surface portion 54 </ b> A of the door outer panel 54 and the lower surface portion 56 </ b> A of the door inner panel 56 are disposed at substantially the same height as the horizontal wall portion 21 </ b> B and the floor panel 24 of the rocker inner panel 20.

  An upper mounting portion 58A that contacts the lower surface portion 54A of the door outer panel 54 and the lower surface portion 56A of the door inner panel 56, and a bent portion 54B and a bent portion 56B are provided in the middle of the upper mounting portion 58A. A recessed portion 58B to be inserted is formed. Further, a notch 60 that is recessed outward in the vehicle width direction is formed inside the door lower molding 58 in the vehicle width direction, and a clip 62 is provided at a position where the notch 60 of the upper mounting portion 58A is formed. A substantially circular hole 61 for attaching the is formed. The lower surface portion 56A of the door inner panel 56 is formed with a substantially circular hole portion 56C at a position coinciding with the hole portion 61, and the clip 62 is inserted into the hole portions 61 and 56C from the lower side of the upper mounting portion 58A. The door lower molding 58 is attached to the door outer panel 54 and the door inner panel 56 by inserting and locking the locking portion 62A to the lower surface portion 56A.

  Next, the operation and effect of this embodiment will be described.

  When a collision body such as a pole collides with the front side door 52, the front side door 52 is provided with the lower surface portion 54A of the door outer panel 54 and the lower surface portion 56A of the door inner panel 56, so that deformation of the cross section is suppressed. The lower surface portions 54A and 56A enter the vehicle inner side (vehicle compartment side) as they are, hit the cyclen panel 22, and the load is transmitted to the rocker 16. The load transmitted to the rocker 16 is further approximately horizontal to the side wall 21B of the rocker inner panel 20 provided at substantially the same height as the lower surface parts 54A and 56A and to the floor panel 24 at substantially the same height as the side wall 21B. It is transmitted efficiently in the direction. Thereby, steep sensing can be realized.

  [Third Embodiment]

  Below, 3rd Embodiment of the vehicle body side part structure which concerns on this invention is described. In addition, about the same component as 1st and 2nd embodiment mentioned above, the same number is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 4, the front side door 72 of the vehicle body side portion 70 includes a door outer panel 74 disposed outside the vehicle width direction, a door inner panel 76 disposed inside the vehicle width direction, and a vehicle lower side. The arranged door lower molding 78 is configured as a main part. Under the door outer panel 74, a lower surface portion 74A is provided as a flat plate-like lower end portion that is bent inward in the vehicle width direction from the lower end portion of the recessed portion 26B and extends substantially horizontally. In addition, a lower surface portion 76A serving as a flat plate-like lower end portion that is bent outward from the lower end portion of the vertical wall portion 28B and extends substantially horizontally is provided at the lower portion of the door inner panel 76. The lower surface portion 76A of the door inner panel 76 is formed so as to overlap the upper surface side of the lower surface portion 74A of the door outer panel 74, and the lower surface portion 76A of the door inner panel 76 and the lower surface portion 74A of the door outer panel 74 are surfaces. In the contacted state, they are joined by spot welding or laser welding. The lower surface portion 74A of the door outer panel 74 and the lower surface portion 76A of the door inner panel 76 are disposed at substantially the same height as the lateral wall portion 21B and the floor panel 24 of the rocker inner panel 20.

  The upper portion of the door lower molding 78 is in contact with the lower surface portion 76A of the door inner panel 76 through a step formed between the upper mounting portion 78A that contacts the lower surface portion 74A of the door outer panel 74 and the upper mounting portion 78A. An upper mounting portion 78B is formed. Further, a notch 80 that is recessed outward in the vehicle width direction is formed inside the door lower molding 78 in the vehicle width direction, and the clip 62 is located at a position where the notch 80 of the upper mounting portion 78B is formed. A substantially circular hole 81 is formed for attaching the. The lower surface portion 76A of the door inner panel 76 is formed with a substantially circular hole portion 76B at a position matching the hole portion 81. By inserting the clip 62 into these hole portions 81 and 76B, the door lower molding 76 is formed. 78 is attached to the door outer panel 74 and the door inner panel 76.

  Next, the operation and effect of this embodiment will be described.

  When a collision body such as a pole collides with the front side door 72, the front side door 72 is provided with the lower surface portion 74A of the door outer panel 74 and the lower surface portion 76A of the door inner panel 76. The lower surface portions 74A and 76A enter the vehicle inner side (vehicle compartment side) as they are, hit the cyclen panel 22, and the load is transmitted to the rocker 16. The load transmitted to the rocker 16 is further approximately horizontal to the horizontal wall 21B of the rocker inner panel 20 provided at substantially the same height as the lower surface parts 74A and 76A, and to the floor panel 24 at substantially the same height as the horizontal wall 21B. It is transmitted efficiently in the direction. Thereby, steep sensing can be realized.

  [Fourth Embodiment]

  Below, 4th Embodiment of the vehicle body side part structure which concerns on this invention is described. In addition, about the same component as 1st-3rd embodiment mentioned above, the same number is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 5, the front side door 92 of the vehicle body side portion 90 is provided with a substantially circular hole 94 to which a cushion rubber 96 is attached on the lower side of the vertical wall portion 28 </ b> B of the door inner panel 28. It has been. The hole portion 94 is formed in a portion above the lower surface portion 26C of the door outer panel 26 in the vertical wall portion 28B. The cushion rubber 96 is made of a member having a substantially circular cross section disposed along the vehicle width direction, and a circumferential groove 96A is formed on the outer side of the outer circumferential surface in the vehicle width direction. The cushion rubber 96 is attached to the door inner panel 28 by inserting the circumferential groove 96 </ b> A of the cushion rubber 96 into the hole 94 of the door inner panel 28. A portion of the cushion rubber 96 on the inner side in the vehicle width direction protrudes from the vertical wall portion 28B of the door inner panel 28 in the direction of the concave portion 22A of the cylinder panel 22.

  Further, the lower surface portion 26 </ b> C of the door outer panel 26, the cushion rubber 96, the lateral wall portion 21 </ b> B formed on the rocker inner panel 20 of the rocker 16, and the floor panel 24 are disposed at substantially the same height.

  Next, the operation and effect of this embodiment will be described.

  When a colliding body such as a pole collides with the front side door 92 in a side face, the front side door 92 is provided with the lower surface portion 26C, so that the deformation of the cross section is suppressed, and the lower surface portion 26C remains inside the vehicle (vehicle compartment side). The cushion rubber 96 having substantially the same height as the lower surface portion 26 </ b> C hits the cylinder panel 22, and the load is transmitted to the rocker 16. The load transmitted to the rocker 16 further passes through the lateral wall portion 21B of the rocker inner panel 20 provided at substantially the same height as the lower surface portion 26C and the cushion rubber 96, and the floor panel is approximately at the same height as the lateral wall portion 21B. 24. That is, the load at the time of a side collision is substantially horizontal from the lower surface portion 26C of the front side door 12 through the cushion rubber 96 to the horizontal wall portion 21B of the rocker inner panel 20 and the floor panel 24 having the same height as the cushion rubber 96. It is transmitted efficiently in the direction.

  In such a vehicle body side structure, since the cushion rubber 96 is provided on the door inner panel 28, the free running distance when the lower surface portion 26C of the door outer panel 26 enters the vehicle width direction inside at the time of a side collision is reduced. The load input to the door outer panel 26 is effectively transmitted by the rocker 16 via the cushion rubber 96 from the lower surface portion 26C. For this reason, the responsiveness from the collision start to sensing is improved, and the steepness of sensing can be realized more effectively.

  [Supplementary explanation of the embodiment]

  In the first to third embodiments described above, the configuration for forming the lower surface portion (flat plate-like lower end portion) on the front side door is changed, but the configuration of the lower surface portion is not limited to these, and other configurations are also possible. Good.

  In each of the embodiments described above, the door lower molding is attached to the lower side of the lower surface portion of the front side door with a clip. However, the means for attaching the door lower molding is not limited to this, and other configurations may be used. For example, the door lower molding may be bonded to the lower portion of the front side door using an adhesive.

  In each embodiment mentioned above, although the lower surface part as a flat lower end part of the present invention was provided in the front side door, it is not limited to this, for example, the present invention may be applied to a rear side door.

1 is a longitudinal sectional view illustrating an overall configuration of a vehicle body side part structure according to a first embodiment. It is a longitudinal cross-sectional view which shows the deformation | transformation process at the time of the side collision of the vehicle body side part structure of FIG. It is a longitudinal cross-sectional view which shows the whole structure of the vehicle body side part structure which concerns on 2nd Embodiment. It is a longitudinal cross-sectional view which shows the whole structure of the vehicle body side part structure which concerns on 3rd Embodiment. It is a longitudinal cross-sectional view which shows the whole structure of the vehicle body side part structure which concerns on 4th Embodiment.

Explanation of symbols

10 Car body side 12 Front side door (side door)
12A Lower part 16 Rocker 18 Rocker outer panel 20 Rocker inner panel 21B Side wall (joint surface)
22 Cymene panel 24 Floor panel 24A End part 26 Outer panel 26A Outer wall part (vehicle design surface)
26C Lower surface (lower end)
28 Door inner panel 30 Door lower molding 30A Exterior wall (vehicle exterior design surface)
30B Inner wall (vehicle inner side)
38 sensor (side collision detection sensor)
50 Car body side 52 Front side door (side door)
54 Door outer panel 54A Lower surface (lower end)
56 Door inner panel 56A Lower surface (lower end)
58 Door lower molding 70 Car body side 72 Front side door (side door)
74 Door outer panel 74A Lower surface (lower end)
76 Door inner panel 76A Lower surface (lower end)
78 Door lower molding 90 Car body side 92 Front side door (side door)
96 cushion rubber

Claims (5)

A side door provided with a door outer panel forming a vehicle design surface, and a door inner panel disposed inside the vehicle of the door outer panel;
A rocker outer panel and a rocker inner panel form a closed cross section, and a rocker disposed along the vehicle front-rear direction inside the vehicle below the side doors;
A vehicle body side structure configured to include:
A flat lower end provided at a lower portion of the side door and extending substantially horizontally from the vehicle design surface toward the vehicle inner side;
A joint surface extending substantially horizontally inside the vehicle of the rocker inner panel;
And a floor panel to which a side collision detection sensor that detects a side collision state is attached to an end of the vehicle in the width direction.
The vehicle body side part structure, wherein the lower end part and the joint surface are arranged at substantially the same height as the floor panel.   The vehicle body side part structure according to claim 1, wherein the lower end portion is formed by the door outer panel.   The vehicle body side part structure according to claim 1, wherein the lower end portion is formed by the door outer panel and the door inner panel.   4. A door lower molding having a vehicle exterior design surface and a vehicle inner side surface formed at a lower side of the lower end portion of the side door. Car body side part structure given in the paragraph. Cushion rubber is provided at a position overlapping the rocker on the vehicle inner surface of the door inner panel in a vehicle side view,
The vehicle body according to any one of claims 1 to 4, wherein the cushion rubber is disposed at substantially the same height as the lower end portion, the joint surface, and the floor panel. Side structure.

Images