JP2010036863A - Vehicular seat deformation suppressing structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular seat deformation suppressing structure capable of sufficiently suppressing the deformation of a vehicular seat at a vehicular side collision. <P>SOLUTION: A moment cancel plate 34 is provided at the outside end in the vehicle width direction of a seat rod 33. When the other vehicle receives a collision to a side and a center pillar 7 enters a cabin space, the entered pillar inner 14 is abutted on an upper side part the moment cancel plate 34, and a part positioned at the lower part than a joining part with the seat rod 33 of the moment cancel plate 34 is moved to a rocker 6 side with a joining part as a fulcrum abutted on a side surface 11a of a rocker inner 11. The cancel moment M2 in the opposite direction (clockwise direction in Fig.3) to a bending moment M1 with the joining part with the moment cancel plate 34 as a fulcrum is actuated to the seat rod 33, and cancels a part or all of the bending moment M1. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vehicle seat deformation suppressing structure that suppresses deformation of a vehicle seat during a vehicle side collision.

Conventionally, as a vehicle seat deformation suppressing structure, as described in, for example, Japanese Patent Application Laid-Open No. 2001-130446, a flat plate is provided at an outer end in the vehicle width direction of a seat lower frame extending in the vehicle width direction within the seat, and a center pillar In this type of pillar inner member, an engagement member that engages with a flat plate when a load is input by a collision of another vehicle from the side of the vehicle is known. In such a vehicle seat deformation suppressing structure, when another vehicle collides from the side surface of the host vehicle and a load is input from the side of the vehicle, the center pillar enters the passenger compartment space. At this time, the engagement member engages with the flat plate at the outer end portion in the vehicle width direction of the seat lower frame, whereby the load from the side of the vehicle is transmitted to the seat lower frame. As a result, the seat lower frame moves to the inside of the vehicle together with the seat, and the load is input to the floor tunnel by contacting the inner end in the vehicle width direction with the floor tunnel at the center of the vehicle. This suppresses movement and deformation of the sheet.
JP 2001-130446 A

  However, in such a vehicle seat deformation suppressing structure, the effect of suppressing the bending moment in the vertical direction acting on the seat at the time of a vehicle side collision is insufficient, and the seat rotates and deforms upward. Could not be sufficiently suppressed.

  The present invention has been made to solve such a problem, and an object of the present invention is to provide a vehicle seat deformation suppressing structure capable of sufficiently suppressing deformation of a vehicle seat at the time of a vehicle side collision. To do.

  A vehicle seat deformation suppressing structure according to the present invention includes a deformation suppressing member that is attached to a vehicle seat, provided at an end of a seat rod, and having a lower end facing the rocker in the vehicle width direction. To do.

  In this vehicle seat deformation suppressing structure, the lower end side of the deformation suppressing member provided at the outer end of the seat rod in the vehicle width direction faces the rocker in the vehicle width direction. Therefore, when another vehicle collides with the host vehicle from the side, the center pillar or door enters the cabin space, and the seat rod receives a vertical bending moment from the center pillar or door. The lower end side of the plate moves to the rocker side and abuts against the rocker. When the lower end side of the deformation suppressing member comes into contact with the rocker, a reaction force is received from the rocker. Therefore, a canceling moment that cancels the bending moment due to the vehicle side collision acts on the seat rod with the joint portion with the deformation suppressing member as a fulcrum. Thereby, the bending deformation of the seat rod at the time of a vehicle side collision can be suppressed, and the deformation of the vehicle seat can also be sufficiently suppressed.

  In the vehicle seat deformation suppressing structure according to the present invention, it is preferable that the deformation suppressing member is disposed so that the lower end side comes into contact with the rocker when a vehicle side collision occurs. Since the lower end side of the deformation suppressing member is disposed so as to abut against the rocker at the time of a vehicle side collision, a cancel moment can be reliably applied to the seat rod.

  In the vehicle seat deformation suppressing structure according to the present invention, it is preferable that a convex portion protruding toward the rocker is formed on the lower end side of the deformation suppressing member. When the deformation suppressing member has the convex portion on the lower end side, the distance between the deformation suppressing member and the rocker can be reduced. As a result, the lower end portion of the deformation suppressing member can be brought into contact with the rocker accurately at the time of a vehicle-side collision, and can be brought into contact with the rocker quickly, so that a canceling moment can be reliably applied to the seat rod.

  In the vehicle seat deformation suppressing structure according to the present invention, it is preferable that a convex portion that protrudes toward the deformation suppressing member is formed on the inner side surface of the rocker in the vehicle width direction. By forming the convex portion on the side surface in the vehicle width direction of the rocker, the distance between the deformation suppressing member and the rocker can be reduced. As a result, the lower end portion of the deformation suppressing member can be brought into contact with the rocker accurately at the time of a vehicle-side collision, and can be brought into contact with the rocker quickly, so that a canceling moment can be reliably applied to the seat rod.

  According to the present invention, it is possible to sufficiently suppress the deformation of the vehicle seat at the time of a vehicle side collision.

  DESCRIPTION OF EMBODIMENTS Hereinafter, a preferred embodiment of a vehicle seat deformation suppressing structure according to the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a cross-sectional view of a vehicle seat deformation suppressing structure according to an embodiment of the present invention as seen from the front. In the present embodiment, only the vehicle seat on the passenger seat side is described, and the right side in FIG. 1 is referred to as “outside in the vehicle width direction”, and the left side in FIG. 1 is described as “inside in the vehicle width direction”. To do.

  A vehicle seat deformation suppressing structure 1 according to the present embodiment includes a floor 2 constituting a floor surface of a passenger compartment space, and a tunnel 4 provided between a driver seat and a passenger seat at a center position in the vehicle width direction of the floor 2. A pair of rockers 6 extending in the vehicle longitudinal direction at both ends of the floor in the vehicle width direction, a pair of center pillars 7 extending in the vertical direction at the vehicle longitudinal direction center positions at both ends in the vehicle width direction, and the rocker 6 on the floor 2 And a pair of vehicle seats 8 respectively disposed in a space between the tunnel 4 and the tunnel 4. In FIG. 1, the rocker 6, the center pillar 7, and the vehicle seat 8 only on the passenger seat side are shown.

  The floor 2 is a panel-like member that extends horizontally in the lower side of the vehicle, and constitutes the floor surface of the vehicle compartment space of the vehicle. Further, the tunnel 4 is formed by pushing the center position of the floor 2 in the vehicle width direction into a trapezoidal cross section and projecting it. A console box 9 is disposed on the upper surface of the tunnel 4. The console box 9 is preferably reinforced with a reinforcing member (not shown) or the like on the side surface in the vehicle width direction so as to receive and support the vehicle seat that moves inward in the vehicle width direction in the event of a vehicle side collision.

  The rocker 6 has a function of constituting a skeleton member on the vehicle body lower side by extending in the vehicle front-rear direction at the end of the floor 2 in the vehicle width direction and transmitting an impact from the vehicle front-rear direction to other skeleton members. is there. The rocker 6 is a substantially quadrangular hollow member formed by bringing a rocker inner 11 and a rocker outer 12 having a substantially U-shaped cross section to face each other in the vehicle width direction and welding each welding allowance. The rocker 6 is disposed along the outer edge of the floor 2 in the vehicle width direction, and the edge of the floor 2 is joined to the lower end of the side surface 11a of the rocker inner 11 by welding or the like. It is connected.

  The center pillar 7 is a support column that supports a vehicle body and a roof (not shown), and welds a pillar inner 14 that extends in the vehicle vertical direction to a pillar outer 13 that has a substantially U-shaped cross section and extends in the vehicle vertical direction. Thus, a closed cross section is formed. The lower end of the center pillar 7 is connected to the rocker 6 by welding or the like.

  A bracket 16 having a horizontal upper surface is provided at a corner between the tunnel 4 and the floor 2, and a seat leg 18 having a rectangular cross section for supporting the vehicle seat 8 is provided on the upper surface of the bracket 16. It is provided so as to extend in the vehicle front-rear direction. On the upper surface of the seat leg 18, a lower rail 17 is provided for enabling the vehicle seat 8 to slide in the front-rear direction. On the other hand, a bracket 19 whose upper surface is a horizontal surface is provided at a corner between the rocker 6 and the floor 2, and a seat leg 22 for supporting the vehicle seat 8 is provided on the upper surface of the bracket 19. It is provided to extend in the direction. On the upper surface of the seat leg 22, a lower rail 21 for supporting the vehicle seat 8 so as to be movable in the front-rear direction is provided. The upper surface of the bracket 19 has the same height as the upper surface of the bracket 16 on the inner side in the vehicle width direction, the seat leg 22 has the same shape as the seat leg 18 on the inner side in the vehicle width direction, and the lower rail 21 also has the vehicle width. It has the same shape as the lower rail 17 on the inner side in the direction.

  The vehicle seat 8 includes a seat part 23 for a passenger to sit on and a seat back part 24 for a passenger to lean on. These seat part 23 and seat back part 24 are comprised by covering the frame | skeleton formed with the metal member with a cushioning material. In addition, in FIG. 1, only the frame | skeleton of the vehicle seat 8 is shown, and the cushion material which covers them is abbreviate | omitted.

  The seat back portion 24 of the vehicle seat 8 is configured by using a back seat frame 26 formed in a rectangular ring shape by a metal pipe material as a skeleton, and a lower end portion of the seat back portion 24 via a reclining mechanism (not shown). It is attached to the rear end of 23 so that it can incline.

  The seat portion 23 of the vehicle seat 8 is arranged to face each other so as to sandwich the lower end portion of the back seat frame 26 from both sides in the vehicle width direction, and extends in the vehicle front-rear direction above the lower rails 17, 21. Plate-shaped base plates 27 and 28 are provided. An upper rail 31 that is slidably fitted to the lower rail 17 of the seat leg 18 is provided on the lower surface of the base plate 27 on the inner side in the vehicle width direction. Further, an upper rail 32 that is slidably fitted to the lower rail 21 of the seat leg 22 is provided on the lower surface of the base plate 28 on the outer side in the vehicle width direction. Accordingly, the vehicle seat 8 is supported by the seat legs 18 and 22 so as to be slidable in the vehicle front-rear direction.

  The seat portion 23 of the vehicle seat 8 is provided with a seat rod 33 that extends in the vehicle width direction on the rear side of the base plates 27 and 28 and whose both ends are supported by the base plates 27 and 28, respectively. The seat rod 33 has an inner end in the vehicle width direction that faces the side surface of the console box 9 and an outer end in the vehicle width direction that faces the center pillar 7 and the inner panel of the door. When the center pillar 7 or the door enters the vehicle compartment space at the time of a vehicle-side collision, the seat rod 33 is moved by receiving a load from the outer end in the vehicle width direction toward the inner side in the vehicle width direction. It is provided with a function of suppressing movement and deformation of the vehicle seat 8 by being received by colliding with the console box 9 at the portion. The inner end in the vehicle width direction of the seat rod 33 faces the side surface of the tunnel 4 and may be received by colliding with the tunnel 4 at the time of collision. In that case, a reinforcing member or the like is attached to the side surface of the tunnel 4 It is preferable to be reinforced by.

  An outer end 33a in the vehicle width direction of the seat rod 33 passes through the base plate 28, and a moment canceling plate (deformation suppressing member) 34 is provided at the tip thereof. FIG. 2 is a perspective view of the moment cancel plate 34. As shown in FIG. 2, the moment canceling plate 34 has a flat plate-like main body portion 37 in which a through hole 36 into which the seat rod 33 is fitted is formed at the center position, and a lower end portion of the main body portion 37 having an L-shaped cross section. And a convex portion 38 formed by bending.

  Returning to FIG. 1, when the moment canceling plate 34 is attached to the vehicle width direction outer side end portion 33 a of the seat rod 33, the main body portion 37 expands in the vehicle vertical direction, and the lower end side thereof is the side surface in the vehicle width direction of the rocker 6. 11a and a positional relationship that extends to a position facing the vehicle width direction. Further, when the upper end portion of the main body portion 37 extends above or to the same height as the upper end portion of the base plate 28, at least when the center pillar 7 or the door enters the passenger compartment space at the time of the vehicle side collision, The positional relationship is such that it extends to a height that contacts the door.

  Further, the convex portion 38 of the moment canceling plate 34 projects toward the rocker 6 on the outer side in the vehicle width direction, and the outer end portion 38a in the vehicle width direction faces the upper portion of the side surface 11a of the rocker inner 11 at a predetermined interval. The moment cancel plate 34 is made of metal or resin, and a solid type (solid type) plate in which no space is formed is used.

  Next, operations and effects of the vehicle seat deformation suppressing structure 1 according to the present embodiment will be described with reference to FIGS. FIG. 3 is a diagram illustrating a state in which another vehicle collides with the vehicle employing the vehicle seat deformation suppressing structure 1 according to the present embodiment. FIG. 4 is a diagram showing a configuration of a vehicle that employs a conventional deformation suppression structure, and corresponds to FIG. FIG. 5 is a diagram illustrating a state in which another vehicle collides with a vehicle employing a conventional deformation suppression structure.

  In the vehicle seat deformation suppressing structure 1 according to the present embodiment, the seat rod 33 has an outer end in the vehicle width direction that protrudes toward the rocker 6 and a main body portion 37 that extends in the vehicle vertical direction, and the vehicle width direction outside. A moment canceling plate 34 having an end 38a and a convex portion 38 facing the upper portion of the side surface 11a of the rocker inner 11 is provided. As shown in FIG. 3, when the other vehicle side impacts and the center pillar 7 enters the passenger compartment space, the entered pillar inner 14 comes into contact with the upper portion of the main body portion 37 of the moment canceling plate 34. At this time, a load P1 inward in the vehicle width direction acts on the seat rod 33, and a bending moment M1 in the vertical direction (counterclockwise in FIG. 3) acts. The seat rod 33 moves inward in the vehicle width direction by the action of the load P1 inward in the vehicle width direction, and the inner end in the vehicle width direction collides with the console box 9 or the side surface of the tunnel 4 and is received. As a result, the reaction force of P3 acts.

  When a load is input from the center pillar 7 to the upper portion of the moment canceling plate 34, the convex portion 38 located below the joint with the seat rod 33 in the moment canceling plate 34 is a rocker with the joint as a fulcrum. While moving to the 6th side, the vehicle width direction outer side end portion 38a contacts the side surface 11a of the rocker inner 11. When the vehicle width direction outer side end portion 38 a comes into contact with the side surface 11 a of the rocker inner 11, the convex portion 38 receives the reaction force P <b> 2 from the rocker 6.

  As a result, the canceling moment M2 in the direction opposite to the bending moment M1 (clockwise in FIG. 3) acts on the seat rod 33 with the joint with the moment canceling plate 34 as a fulcrum. Since the cancel moment M2 acts in a direction opposite to the bending moment M1, a part or all of the bending moment M1 can be canceled. Thereby, the bending deformation of the seat rod 33 at the time of a vehicle side collision can be suppressed, and the deformation of the vehicle seat 8 can also be sufficiently suppressed.

  Here, for comparison, a conventional vehicle seat deformation suppressing structure 51 will be described. As shown in FIG. 4, the conventional vehicle seat deformation suppressing structure 51 has a configuration in which only a seat rod 54 extending in the vehicle width direction is provided in the seat portion 53 of the vehicle seat 52. Such a deformation suppressing member is not provided.

  In such a vehicle seat deformation suppressing structure 51, as shown in FIG. 5, the load from the center pillar 7 at the time of a vehicle side collision is input to a position above the seat rod 54, and the seat rod 54 receives the load. In addition to the load inward in the vehicle width direction, a bending moment M3 in the vertical direction (counterclockwise in FIG. 5) acts. Therefore, it is necessary to increase the strength of the seat rod 54 itself or increase the strength of the skeleton member of the vehicle seat 52, which may increase the mass of the vehicle body or increase the cost.

  On the other hand, in the vehicle seat deformation suppressing structure 1 according to the present embodiment, by providing the moment canceling plate 34, it is possible to generate a canceling moment that can cancel the bending moment. By increasing the strength of the vehicle itself, it is possible to suppress deformation of the vehicle seat without increasing the mass of the vehicle body or increasing the cost.

  Further, the convex portion 38 protruding toward the rocker 6 is formed on the lower end side of the moment canceling plate 34, so that the distance in the vehicle width direction between the moment canceling plate 34 and the rocker 6 can be reduced. . As a result, the lower end portion of the moment canceling plate 34 can be brought into contact with the rocker 6 accurately at the time of a vehicle side collision, and can be brought into contact with the rocker 6 promptly, so that the canceling moment M2 is reliably applied to the seat rod 33. be able to.

  The present invention is not limited to the embodiment described above.

  For example, in the vehicle seat deformation suppressing structure 1 according to the present embodiment, the moment cancellation plate 34 is a solid type (solid type), but is not limited thereto, as shown in FIG. A hollow type moment canceling plate 61 may be used. The moment canceling plate 61 has the same outer shape as the moment canceling plate 34, but the inside thereof is hollow and is reinforced by providing a plurality of reinforcing ribs 62. Such a moment cancellation plate 61 is formed by resin molding. By making the moment cancellation plate hollow, it is possible to reduce the weight of the parts.

  Further, in the vehicle seat deformation suppressing structure 1, the convex portion 38 is provided on the moment canceling plate 34 to reduce the distance between the lower end portion and the rocker 6, but instead, the convex portion is provided on the moment canceling plate 71. It is good also as a structure which narrows the distance of the lower end part of the moment cancellation plate 71, and the rocker 6 by providing the rocker 6 side and providing the garnish (convex part) 72 without providing.

  Specifically, as shown in FIG. 7, the flat moment canceling plate 71 composed only of the main body is used, and the vehicle front-rear direction so as to cover the upper part of the side surface 11 a and the upper surface 11 b of the rocker inner 11 of the rocker 6. A garnish 72 extending in the direction is attached. The side surface portion 72a of the garnish 72 faces the side surface of the lower portion of the moment cancellation plate 71 at a predetermined interval in the vehicle width direction. As shown in FIG. 8, the garnish 72 is configured to include an upper surface portion 72b that extends in a substantially horizontal direction, and a side surface portion 72a that extends vertically downward from the vehicle width direction inner side end portion of the upper surface portion 72b. Further, reinforcing ribs 73 are provided on the inner surface of the side surface portion 72a of the garnish 72 to increase the strength of the side surface portion 72a in the vehicle width direction by extending outward in the vehicle width direction and contacting the side surface 11a of the rocker 6. 74 and 75 are formed. An attachment allowance 76 is formed at the outer end of the lowermost reinforcing rib 75 in the vehicle width direction so as to come into contact with the side surface 11a of the rocker 6. Further, the garnish 72 is fixed to the rocker 6 by inserting a bolt through the through hole 77 of the upper surface portion 72 b and screwing it onto the upper surface 11 b of the rocker 6.

  Thus, the garnish 72 that protrudes toward the moment canceling plate 71 is formed on the upper end side of the side surface 11a on the inner side in the vehicle width direction of the rocker 6, so that the vehicle width between the moment canceling plate 71 and the rocker 6 is increased. The direction distance can be narrowed. Accordingly, the lower end portion of the moment canceling plate 71 can be brought into contact with the garnish 72 of the rocker 6 accurately at the time of a vehicle side collision, and can be brought into contact quickly, and the canceling moment can be reliably applied to the seat rod. it can.

  Instead of providing the rocker 6 with the garnish 72, the rocker inner 11 itself of the rocker 6 may be formed in a shape protruding toward the moment canceling plate 71 by pressing.

  In this embodiment, the convex portion is provided only on the moment cancellation plate or the convex portion is provided only on the rocker. However, the convex portion may be provided on both the moment plate and the rocker. As a result, the distance in the vehicle width direction between the lower end side of the moment canceling plate and the rocker can be further reduced.

  Further, in the present embodiment, only the vehicle seat on the passenger seat side has been described, but it is possible to suppress deformation by adopting the same structure for the vehicle seat on the driver seat side.

It is sectional drawing which looked at the vehicle seat deformation | transformation suppression structure which concerns on embodiment of this invention from the front. It is a perspective view of a moment cancellation plate. It is a figure which shows a mode when the other vehicle collides with the vehicle which employ | adopted the vehicle seat deformation | transformation suppression structure which concerns on this embodiment. It is sectional drawing which shows the structure of the vehicle which employ | adopted the conventional deformation | transformation suppression structure, and is a figure corresponding to FIG. It is a figure which shows a mode when another vehicle collides with the vehicle which employ | adopted the conventional deformation | transformation suppression structure. It is a perspective view of the moment cancellation plate which concerns on a modification. It is sectional drawing which shows the vehicle seat deformation | transformation suppression structure which concerns on a modification, and is a figure corresponding to FIG. It is a perspective view of the garnish shown in FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Vehicle seat deformation | transformation suppression structure, 8 ... Vehicle seat, 23 ... Seat part, 33 ... Seat rod, 33a ... Car width direction outer side edge part, 34 ... Moment cancellation plate (deformation suppression member), 38 ... Projection part, 72: Garnish (convex part).

Claims (4)

A seat rod attached to the seat portion of the vehicle seat and extending in the vehicle width direction;
A vehicle seat deformation suppressing structure, comprising: a deformation suppressing member provided at an end of the seat rod and having a lower end facing the rocker in the vehicle width direction.   The vehicle seat deformation suppressing structure according to claim 1, wherein the deformation suppressing member is arranged such that the lower end side comes into contact with the rocker when a vehicle side collision occurs.   The vehicle seat deformation suppressing structure according to claim 1, wherein a protrusion projecting toward the rocker is formed on the lower end side of the deformation suppressing member.   The vehicle seat deformation suppressing structure according to any one of claims 1 to 3, wherein a convex portion protruding toward the deformation suppressing member is formed on an inner side surface of the rocker in the vehicle width direction. .

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