JP2009154623A - Occupant crash protection device for side collision - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an occupant crash protection device for side collision at low cost. <P>SOLUTION: An impact load input to a vehicle body side part during a side collision is transmitted to a pressing member 16 and a storage body 18 (operating means) of a load transmission member 14 disposed on the inside of a vehicle according to the deformation of the side of a vehicle body through the load transmission member 14 installed at the side of the backrest 26 of a rear seat 24. The pressing member 16 compresses the storage body 18 by using, as a drive force, the impact load transmitted thereto through the load transmission member 14, and supplies a fluid in the storage body 18 to an deploying member 12 (impact relieving member) installed at the side end of the backrest 26. The deploying member 12 is interposed between an occupant 28 and a door trim 32 (vehicle body side part). Consequently, considerably expensive parts such as a side collision detection sensor and an inflator used for general side airbag devices can be eliminated. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a side collision occupant protection device.

As a rear seat side airbag device, a structure in which an airbag and an inflator are housed in a side portion of a rear seat is disclosed (see Patent Document 1).
JP 2006-88774 A JP-A-8-40176 JP-A-9-66760 JP 2001-206176 A

  However, in the structure using the inflator to deploy the airbag as in the above-described conventional example, it is necessary to operate the inflator based on the signal from the side collision detection sensor, thereby suppressing the manufacturing cost of the vehicle. It was difficult.

  The present invention has been made in consideration of the above facts, and an object thereof is to provide a low-cost side collision occupant protection device.

  The invention according to claim 1 is provided at a side end portion of the seat back of the rear seat, and is interposed between an occupant seated on the rear seat and a vehicle body side portion at the time of a side collision, thereby impacting the occupant. An impact mitigating member that can relieve the load, a load transmitting member that is provided on the side of the seat back in the side of the vehicle body, and that transmits an impact load to the inside of the vehicle along with the deformation of the side of the vehicle body at the time of a side collision, Of the side ends of the seat back, the shock transmission member is disposed on the vehicle inner side of the load transmission member, and the impact load transmitted through the load transmission member is used as a driving force, so that the impact mitigation member and the occupant are used. And actuating means interposed between the vehicle body side portions.

  In the side collision occupant protection device according to claim 1, the impact load input to the side of the vehicle body at the time of a side collision is deformed by the load transmitting member provided on the side of the seat back of the rear seat. As a result, the load is transmitted to the operating means disposed inside the vehicle of the load transmitting member. The actuating means uses an impact load transmitted through the load transmitting member as a driving force to interpose an impact mitigating member provided at the side end portion of the seat back between the occupant and the vehicle body side portion. Thereby, the impact to the passenger | crew at the time of a side collision can be relieved. In a general side airbag device, a sensor for detecting a side collision, an inflator for deploying an airbag bag body, and the like are required. However, in the side collision occupant protection device according to claim 1, No parts are required. For this reason, a low-cost side collision occupant protection device can be provided.

  According to a second aspect of the present invention, in the side collision occupant protection device according to the first aspect, the load transmitting member corresponds to a vertical wall portion extending in a vehicle width direction of the door inner panel, and It is arranged inside the vehicle width direction.

  In the side collision occupant protection device according to claim 2, the load transmission member is disposed on the inner side in the vehicle width direction of the vertical wall portion corresponding to the vertical wall portion extending in the vehicle width direction of the door inner panel. Therefore, the impact load at the time of the side collision can be efficiently transmitted from the relatively high rigidity vertical wall portion to the load transmitting member in the door inner panel. For this reason, an impact relaxation member can be quickly interposed between a passenger | crew and a vehicle body side part.

  According to a third aspect of the present invention, in the side collision occupant protection device according to the first or second aspect, the load transmitting member is disposed inside the vehicle of the load transmitting member as the actuating means, and at the time of a side collision. A pressing member configured to be displaceable to the inside of the vehicle by the operation of, and a bag-shaped container configured to be able to discharge the fluid from an outlet portion by being sealed by fluid sealed inside and compressed by the pressing member A valve mechanism that is provided at the outlet portion and opens when a predetermined pressure is applied to the outlet portion side to allow the fluid to be discharged from the outlet portion, while allowing a backflow of the fluid to be regulated; The impact mitigating member is connected to the valve mechanism and is stored in a folded state at the side end portion of the seat back, and is supplied with the fluid between the occupant and the vehicle body side portion. It is a deployment member that can be deployed It is.

  In the side collision occupant protection device according to the third aspect, the pressing member is displaced inward of the vehicle by the operation of the load transmitting member at the time of the side collision, and presses the container. When the pressure in the container at this time reaches a predetermined value or more, a valve mechanism provided at the outlet of the container opens, and the fluid sealed inside the container is discharged from the outlet, Supplied to a deployment member connected to the valve mechanism. The deploying member deploys between the occupant and the side of the vehicle body upon receiving this fluid supply. Thus, the deployment member, which is an impact mitigating member, is interposed between the occupant and the door trim, so that the impact on the occupant during a side collision can be mitigated. Since the reverse flow of the fluid from the deployment member to the container is regulated by the valve mechanism, the occupant can be stably restrained.

  Thus, in the side collision occupant protection device according to claim 3, the low-cost configuration in which the fluid in the container is pushed out to the deployment member side by the pressing member, and the deployment member is placed between the occupant and the vehicle body side at the time of a side collision. It can interpose between parts.

  According to a fourth aspect of the present invention, in the side collision occupant protection device according to the first or second aspect, the load transmitting member is provided at the vehicle inner end portion of the load transmitting member as the actuating means, and at the time of a side collision. An extruding member configured to be displaced toward the inside of the vehicle by the operation of the member, and an inclined surface provided on the inside of the extruding member of the impact reducing member and directed to the vehicle outer side and the seat rear side. And the said impact mitigation member is comprised so that it may be extruded ahead of a sheet | seat, when the said extrusion member displaces inside a vehicle and slides on the said inclined surface relatively.

  In the side collision occupant protection device according to claim 4, the pushing member is displaced inward in the vehicle width direction by the operation of the load transmitting member at the time of the side collision, and the relative position on the inclined surface provided in the impact reducing member is relatively To slide. At this time, the impact relaxation member is pushed forward by the force acting on the inclined surface. In this way, the impact mitigating member can be interposed between the occupant and the vehicle body side part at the time of a side collision by using a low-cost configuration that utilizes the force acting on the inclined surface.

  According to a fifth aspect of the present invention, in the side collision occupant protection device according to the first or second aspect, the actuating means is connected to a vehicle inner end portion of the load transmitting member on a seat rear side of the impact mitigating member. And a link-like push-out member configured to project to the front side of the seat by the operation of the load transmitting member at the time of a side collision, and the impact reducing member is provided at the side end of the seat back, The seat back is supported so as to be rotatable about the vertical direction of the seat back, and is configured to be rotated by the extension of the push-out member and pushed out to the front side of the seat.

  In the side collision occupant protection device according to claim 5, the link-type pushing member projects to the front side of the seat by the operation of the load transmitting member at the time of the side collision, so that the impact relaxation member moves the seat back in the vertical direction. The sheet is pushed to the front side of the seat while rotating as a rotation shaft. Thereby, since an impact mitigating member is interposed between a passenger | crew and a vehicle body side part, a passenger | crew can be protected from the impact at the time of a side collision. In this way, using a low-cost configuration that combines a link-like push-out member and a pivotable impact mitigating member, the impact mitigating member is interposed between the occupant and the vehicle body side during a side collision. Can do.

  As described above, according to the side collision occupant protection device according to claim 1 of the present invention, an excellent effect that a low cost side collision occupant protection device can be provided is obtained.

  According to the side collision occupant protection device of the second aspect, it is possible to obtain an excellent effect that the impact relaxation member can be quickly interposed between the occupant and the vehicle body side portion.

  According to the side collision occupant protection device according to claim 3, the low-cost configuration in which the fluid in the container is pushed to the deployment member side by the pressing member, and the deployment member is disposed between the occupant and the vehicle body side portion at the time of a side collision. It is possible to obtain an excellent effect that it can be interposed between the two.

  According to the side collision occupant protection device according to claim 4, the impact mitigating member can be interposed between the occupant and the vehicle body side part at the time of a side collision by using a low-cost configuration using an inclined surface. The excellent effect of being able to be obtained is obtained.

  According to the side collision occupant protection device according to claim 5, by using a low-cost configuration in which a link-like push-out member and a turnable impact reducing member are combined, the impact reducing member is provided at the time of a side collision. An excellent effect of being able to be interposed between the occupant and the vehicle body side portion is obtained.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[First Embodiment]
In FIG. 1, a side collision occupant protection device 10 according to the present embodiment includes a deployment member 12 as an example of an impact mitigating member, a load transmission member 14, a pressing member 16 as an example of an operating unit, a container 18, And a valve mechanism 22.

  The deployment member 12 is provided at a side end portion of the seat back 26 of the rear seat 24, and includes an occupant 28 (FIG. 2) seated on the rear seat 24 at the time of a side collision and a door trim 32 (vehicle body side portion) of the side door 38. By interposing between the two, the impact on the occupant 28 can be reduced. Specifically, the deployment member 12 is a bag body that is connected to the valve mechanism 22 and stored in a folded state at a side end portion of the seat back 26, and receives a fluid supply from the storage body 18 to receive the occupant 28. And the side door 38 can be deployed. As shown in FIG. 2, the unfolding member 12 is folded by combining, for example, bellows folding and roll folding.

  Here, the configuration of the rear seat 24 and its peripheral portion will be briefly described. In FIG. 1, a rear seat 24 is provided at a seat cushion 34 on which an occupant 28 (FIG. 2) sits, a seat back 26 that serves as a backrest of the occupant 28, and a side end portion on the outer side in the vehicle width direction of the seat back 26. The side sheet 36 is formed. As shown in FIG. 2, between the side seat 36 and the seat back 26, there is a gap for accommodating the unfolded deployment member 12 and allowing the deployment member 12 to bulge forward in the seat. Is provided. This gap is normally closed from the vehicle interior side by the seat trim 40. The seat trim 40 is configured to be disengageable from the normal position by the deployment pressure when the deployment member 12 is deployed.

  A seat back frame (not shown) serving as a skeleton of the seat back 26 is provided in the seat back 26. The seat back frame is covered with a seat pad 35 formed in a predetermined shape. The seat pad 35 is further covered with a seat skin 37. On the other hand, the side seat 36 is configured by covering the vehicle interior side of a base 39 made of synthetic resin, for example, with a seat skin 37 similar to the seat back 26.

  In FIG. 2, a side door 38 is disposed outside the seating area of the occupant 28 in the vehicle width direction. The side door 38 is configured by joining a door outer panel 42 and a door inner panel 44, and a door trim 32 that is an interior material is disposed on the vehicle interior side of the door inner panel 44. As shown in the drawing, the door inner panel 44 is provided with a vertical wall portion 44 </ b> A extending inward in the vehicle width direction from the vicinity of the joint portion 46 on the vehicle rear side joined to the door outer panel 42. Further, the rear portion of the door inner panel 44 including the vertical wall portion 44A is formed in, for example, a stepped cross section so as to project inward in the vehicle width direction from the vicinity of the joint portion 46 toward the vehicle front side. It reaches the general surface 44B on the inner side in the width direction. The door trim 32 is disposed on the general surface 44B.

  The rear portion of the side door 38 in the closed state is formed along the door opening portion 48 of the body. The door opening 48 is formed, for example, on a body outer panel 50 that is an example of a vehicle body side, and protrudes inward in the vehicle width direction toward the vehicle front side corresponding to the shape of the rear portion of the door inner panel 44. For example, it is formed in a stepped cross section.

  A body inner panel 52, which is an example of a vehicle body side portion, is disposed on the inner side of the body outer panel 50 in the vehicle width direction. The body inner panel 52 and the body outer panel 50 are joined at a joint 54. The rear part of the body inner panel 52 is connected to, for example, the outer panel 58 of the rear wheel house 56. An inner panel 60 of the rear wheel house 56 is disposed inside the outer panel 58 in the vehicle width direction.

  The door inner panel 44 is provided with a weather strip 62 for improving airtightness and watertightness between the door opening portion 48 and the door inner panel 44. A door opening trim 64 is provided along the joint 54 between the body outer panel 50 and the body inner panel 52, and is configured to be in close contact with, for example, the door trim 32 when the side door 38 is closed.

  2 to 4, the load transmission member 14 is a member that is provided on the side of the seat back 26 in the side part of the vehicle body, and transmits an impact load to the inside of the vehicle with the deformation of the side part of the vehicle body at the time of a side collision. The door inner panel 44 is disposed on the inner side in the vehicle width direction of the vertical wall portion 44A corresponding to the vertical wall portion 44A extending in the vehicle width direction. Specifically, as shown in FIG. 4A, the load transmission member 14 includes a pair of shaft portions 14A extending in the vehicle width direction and a connecting portion that connects the inner end portions of the shaft portions 14A in the vehicle width direction. 14B and a U-shaped member. The outer end in the vehicle width direction of the shaft portion 14 </ b> A is connected by a load receiving member 66.

  For example, a notch 14C is formed near the connecting portion 14B in the shaft portion 14A of the load transmitting member 14 (see also FIG. 4B), and a boss 68 is molded at a portion including the notch 14C, for example. Molded. The boss 68 passes through the base 70 and is fixed. A portion of the boss 68 that is engaged with the notch 14 </ b> C is configured to be broken when a predetermined or higher impact load is input to the load transmission member 14 through the load receiving member 66 at the time of a side collision. . When the boss 68 is broken, the load transmitting member 14 is guided by the boss 68 and can be displaced inward in the vehicle width direction. Conversely, the displacement of the load transmitting member 14 in the normal state is suppressed by the engagement between the notch 14 </ b> C and the boss 68.

  The assembly of the load transmission member 14, the boss 68 and the base 70 is performed by first molding the boss 68 on the load transmission member 14 and inserting the shaft portion 14A into the base 70 before the load receiving member 66 is attached. After fixing 68 to the base 70, the load receiving member 66 is attached.

  As shown in FIG. 3, the base 70 is provided with, for example, two through holes 70 </ b> A through which the bolts 72 are passed. The base 70 is fixed to the inner side surface 52B of the body inner panel 52 by passing bolts 72 through the through holes 70A and fastening to the nuts 74 welded to the outer side surface 52A of the body inner panel 52. . The body inner panel 52 is provided with a long hole 52C through which the load receiving member 66 and the load transmitting member 14 are passed. In a state of being fixed to the body inner panel 52, the pair of shaft portions 14A are arranged, for example, in parallel with the vertical direction of the seat back 26 (see also FIG. 2).

  2 and 5, the pressing member 16 is disposed on the vehicle inner side of the load transmission member 14 and is configured to be displaceable on the vehicle inner side by the operation of the load transmission member 14 at the time of a side collision, for example, a plate-like member It is. On the outer surface of the pressing member 16, a receiving portion 16A having a V-shaped cross section extending along the longitudinal direction of the connecting portion 14B of the load transmitting member 14, that is, the vertical direction of the seat back 26 is provided. In a normal state, the connecting portion 14B of the load transmitting member 14 is in contact with or in close proximity to the receiving portion 16A.

  The pressing member 16 has a width dimension and a height dimension that are slightly smaller than the inner dimensions of the case 76 in which the container 18 is accommodated, and is configured so that the inside of the case 76 can be smoothly displaced in the vehicle width direction. ing. In the case of a cylinder device, the case 76 corresponds to a cylinder, and the pressing member 16 corresponds to a piston.

  In FIG. 2, the container 18 is a bag-like container that is configured so that a fluid is sealed therein, is pressed by the pressing member 16 and contracts, and the fluid can be discharged from the outlet 18 </ b> A. It is stored. The case 76 is a box that opens to the outside in the vehicle width direction and has a depth in the vehicle width direction, and is closed by the pressing member 16 from the outside in the vehicle width direction of the housing body 18 housed therein. . The fluid sealed in the container 18 is a gas or a liquid. When a liquid is used as the fluid, it is desirable to use a liquid with a viscosity as low as possible so that the liquid can quickly move from the container 18 to the deployment member 12.

  In FIG. 2, the valve mechanism 22 is provided at the outlet portion 18A of the container 18 and opens when a predetermined pressure or more is applied to the outlet portion 18A side to allow the fluid to be discharged from the outlet portion. The back flow of the fluid can be regulated.

  Specifically, the valve mechanism 22 is configured as a check valve. In the valve mechanism 22, the valve body 78 is biased toward the housing body 18 by the compression coil spring 80, and normally contacts the valve seat 82 provided on the housing body 18 side to block the flow path. It is out. Thereby, the backflow of the fluid from the expansion | deployment member 12 to the container 18 can be controlled now. On the other hand, when the pressure in the container 18 reaches a predetermined level or more and a force exceeding the urging force of the compression coil spring 80 acts on the valve body 78 from the container 18 side, the compression coil spring 80 contracts and the valve The body 78 is configured to be separated from the valve seat 82 to open the flow path.

  The inner end of the valve mechanism 22 in the vehicle width direction penetrates, for example, the case 76 and the side seat 36 and projects between the side seat 36 and the seat back 26. The deployment member 12 is connected to the inner end of the valve mechanism 22 in the vehicle width direction.

  As described above, in the side collision occupant protection device 10, the impact load transmitted to the pressing member 16 through the load transmitting member 14 at the time of a side collision is used as the driving force of the pressing member 16, so The fluid is supplied to the deployment member 12, and the deployment member 12 is interposed between the occupant 28 and the door trim 32.

  In FIG. 5, a case 76 is assembled in advance on the side seat 36 before being attached to the side end of the seat back 26 (FIG. 1). The case 76 accommodates the container 18 (FIG. 2), and the opening of the case 76 is closed by the pressing member 16 from the outside in the vehicle width direction of the container 18. In addition, the valve mechanism 22 and the deployment member 12 (FIG. 2) are also assembled to the side seat 36 in advance. On the other hand, as shown in FIG. 3, the load transmission member 14 is assembled in advance to the inner side surface 52 </ b> B of the body inner panel 52 via the boss 68 and the base 70.

  Since the receiving portion 16A having a V-shaped cross section in the pressing member 16 extends in the vertical direction of the seat corresponding to the longitudinal direction of the connecting portion 14B (FIG. 3) of the load transmitting member 14, the assembly of the side seat 36 is For example, it is performed in the direction of arrow A from the upper side of the seat to the lower side of the seat.

(Function)
This embodiment is configured as described above, and the operation thereof will be described below. In FIG. 6, in the side collision occupant protection device 10 according to the present embodiment, when a side collision to the vehicle body side portion occurs, for example, when an impact load F is input to the rear portion of the side door 38, The rear part of the side door 38 and the vicinity of the door opening part 48 of the vehicle body on which the rear part is located are deformed inside the vehicle. Thereby, the impact load F is transmitted to the load transmission member 14 by the body outer panel 50 coming into contact with the load receiving member 66.

  Here, since the load transmission member 14 is disposed on the inner side in the vehicle width direction of the vertical wall portion 44A in correspondence with the relatively high-rigidity vertical wall portion 44A in the door inner panel 44, the load transmission member 14 at the time of a side collision. The impact load F can be efficiently transmitted from the door inner panel 44 and the body outer panel 50 to the load transmitting member 14.

  4A, when the impact load F transmitted to the load transmission member 14 is equal to or greater than a predetermined value, of the bosses 68 molded on the shaft portion 14A of the load transmission member 14, the shaft portion 14A The part engaged with the notch 14C is broken. When the boss 68 is broken, the load transmitting member 14 is guided by the boss 68 and displaced inward in the vehicle width direction. In addition, since the displacement of the load transmitting member 14 in the normal state is suppressed by the engagement between the notch 14C and the boss 68, it is possible to suppress the generation of abnormal noise.

  In FIG. 6, when the load transmission member 14 is displaced inward in the vehicle width direction, the load transmission member 14 is pushed, and the pressing member 16 is smoothly displaced inward in the vehicle width direction. At this time, the connecting portion 14 </ b> B of the load transmitting member 14 is received by the receiving portion 16 </ b> A having a V-shaped cross section in the pressing member 16, so that the impact load F can be efficiently transmitted to the pressing member 16. Further, at this time, the receiving portion 16A of the pressing member 16 is in linear contact with the connecting portion 14B of the load transmitting member 14 along the longitudinal direction of the connecting portion 14B, so that the pressing member 16 is pressed at one point. The pressing member 16 can be stably displaced inward in the vehicle width direction.

  When the pressing member 16 is displaced inward in the vehicle width direction within the case 76, the container 18 accommodated in the case 76 is compressed by the pressing member 16, so that the pressure of the fluid sealed in the container 18 is increased. Will increase. As a result, when a predetermined pressure or more acts on the container 18 side of the valve mechanism 22, that is, the outlet 18 </ b> A of the container 18 serving as the inlet to the valve mechanism 22, the valve mechanism 22 opens and the inside of the container 18 The fluid sealed inside is discharged from the outlet 18 </ b> A and supplied to the deployment member 12 connected to the valve mechanism 22.

  Specifically, in the valve mechanism 22, the valve body 78 is biased toward the housing body 18 by the compression coil spring 80, and normally contacts the valve seat 82 provided on the housing body 18 side. , Blocking the flow path. Thereby, the backflow of the fluid from the expansion | deployment member 12 to the container 18 can be controlled now. On the other hand, when the pressure in the container 18 reaches a predetermined level or more and a force exceeding the urging force of the compression coil spring 80 acts on the valve body 78 from the container 18 side, the compression coil spring 80 contracts and the valve The body 78 moves away from the valve seat 82 and the flow path opens. Thereby, the fluid can be supplied from the container 18 to the deployment member 12.

  The deployment member 12 receives the supply of the fluid and deploys between the occupant 28 and, for example, the door trim 32. At this time, the seat trim 40 is detached from the normal position by the deployment pressure of the deployment member 12. Since the deployment member 12 that is an impact mitigating member is interposed between the occupant 28 and the door trim 32, the impact on the occupant 28 at the time of a side collision can be mitigated. Since the reverse flow of the fluid from the deployment member 12 to the container is regulated by the valve mechanism 22, the impact mitigating action can be maintained.

  The side airbag device generally used as a side collision occupant protection device requires a sensor for detecting a side collision, an inflator for deploying an airbag bag body, and the like. In the side collision occupant protection device 10, the deployment member 12 is interposed between the occupant 28 and the door trim 32 by using a low-cost configuration in which the fluid in the container 18 is pushed toward the deployment member 12 by the pressing member 16. Therefore, relatively expensive parts such as an inflator are unnecessary. Thus, the side collision occupant protection device 10 can be provided at a low cost.

[Second Embodiment]
In FIG. 7, the side collision occupant protection device 20 according to the present embodiment includes a pushing member 86 and an inclined surface 88 </ b> A provided on an impact absorbing pad 88, which is an example of an impact reducing member, as operating means. Yes.

  The push-out member 86 is disposed at the vehicle inner end portion of the load transmission member 14, that is, the connecting portion 14B, and is configured to be displaceable toward the vehicle inner side by the operation of the load transmission member 14 at the time of a side collision, for example, made of synthetic resin. It is a member. The pushing member 86 is formed along the longitudinal direction of the connecting portion 14 </ b> B of the load transmitting member 14, that is, the receiving portion 86 </ b> A having a V-shaped cross section extending along the vertical direction of the seat back 26, and the inclined surface 88 </ b> A of the shock absorbing pad 88. The sliding portion 86B is provided.

  In a normal state, the pushing member 86 is sandwiched, for example, between the connecting portion 14B of the load transmitting member 14 and the inclined surface 88A of the shock absorbing pad 88. In a state in which the connecting portion 14B of the load transmitting member 14 and the receiving portion 86A having a V-shaped cross section are in contact with each other, the pushing member 86 has a longitudinal direction of the connecting portion 14B with respect to the connecting portion 14B of the load transmitting member 14. It is in a state where it can be rotated as a rotation shaft.

  In FIG. 7, the shock absorbing pad 88 is, for example, foamed resin provided on the back side of the base material 39 in the side sheet 36, and the inclined surface 88 </ b> A that contacts the pushing member 86 is on the inside of the pushing member 86. It is formed toward the vehicle outer side and the seat rear side. The impact absorbing pad 88 is configured to be pushed forward of the seat when the pushing member 86 is displaced inward of the vehicle and relatively slides on the inclined surface 88A.

  In FIG. 8, the shock absorbing pad 88 is provided in a range corresponding to a chest (not shown) of the occupant 28. The inclined surface 88A is formed, for example, at the center of the shock absorbing pad 88 in the height direction corresponding to the length of the pushing member 86 (FIG. 7). Accordingly, an upper wall portion 88B and a lower wall portion 88C are formed at the upper end and the lower end of the inclined surface 88A, respectively, projecting toward the vehicle outer side and the seat rear side. With the upper wall portion 88B and the lower wall portion 88C, the movement of the pushing member 86 in the vertical direction of the seat back 26 can be restricted.

  In FIG. 7, the inclined surface 88A of the shock absorbing pad 88 is formed in a flat shape, but the sliding portion 86B of the pushing member 86 is slightly curved so as to be convex toward the inclined surface 88A. Yes. This is to make the sliding of the pushing member 86 on the inclined surface 88A at the time of a side collision more smooth.

  As shown in FIG. 7, the pushing member 86 is disposed on the rear side of the inclined surface 88A of the shock absorbing pad 88, and as shown in FIG. 8, the shock absorbing pad 88 has an upper wall portion 88B and a lower portion. Since the wall portion 88C is formed, the assembly of the side seat 36 is performed not from the seat vertical direction but from the seat front side to the seat rear side, for example.

  Since other parts are the same as those in the first embodiment, the same parts are denoted by the same reference numerals in the drawings, and the description thereof is omitted.

(Function)
This embodiment is configured as described above, and the operation thereof will be described below. Of the actions of the side collision occupant protection device 20 according to the present embodiment, the action until the load transmitting member 14 is displaced inward in the vehicle width direction after the side collision to the vehicle body side portion occurs is the first implementation. It is the same as the form.

  In FIG. 9, when the load transmitting member 14 is displaced inward in the vehicle width direction, the pushing member 86 that is in contact with the connecting portion 14B of the load transmitting member 14 is also displaced inward in the vehicle width direction. Thereby, the pushing member 86 slides relatively on the inclined surface 88 </ b> A provided on the shock absorbing pad 88. Since the sliding part 86B of the pushing member 86 is slightly curved so as to protrude toward the inclined surface 88A, the sliding of the pushing member 86 on the inclined surface 88A is performed more smoothly.

  At this time, as a component of the impact load F transmitted from the sliding portion 86B of the pushing member 86 to the inclined surface 88A of the shock absorbing pad 88, a force in the forward direction of the seat is generated. When the pushing member 86 is displaced inward in the vehicle width direction, the force in the forward direction of the seat is continuously applied to the impact absorbing pad 88, so that the impact absorbing pad 88 is pushed forward in the direction of the arrow B. Go. As a result, the shock absorbing pad 88 is interposed between the occupant 28 and the door trim 32. Since the shock absorbing pad 88 is interposed between the occupant 28 and the door trim 32, the impact on the occupant 28 at the time of a side collision can be reduced.

  Thus, in the side collision occupant protection device 20 according to the present embodiment, the shock absorbing pad 88 is connected to the occupant 28 at the time of a side collision by using a low-cost configuration that uses the inclined surface 88A of the shock absorbing pad 88. It can be interposed between the door trim 32. For this reason, comparatively expensive parts, such as an inflator used for a general side airbag device, are unnecessary, and the side collision occupant protection device 20 can be provided at low cost.

  In the present embodiment, a plate material having a relatively high rigidity and a small friction coefficient may be attached to the inclined surface 88A. This is because, at the time of a side collision, the pushing member 86 can be slid more smoothly, whereby the impact absorbing pad 88 can be pushed out more efficiently to the front of the seat.

[Third Embodiment]
In FIG. 10, the side collision occupant protection device 30 according to the present embodiment has a link-like push-out member 90 as an operating means, and an impact absorbing pad 92 as an impact mitigating member.

  The pushing member 90 is connected to the vehicle inner end portion of the load transmission member 14, that is, the connecting portion 14 </ b> B on the rear side of the shock absorbing pad 92, and protrudes to the front side of the seat by the operation of the load transmission member 14 at the side collision. It is configured as follows.

  Specifically, the link-shaped pushing member 90 includes a first link 101, a second link 102, and a third link 103. The first link 101 is always connected to the connecting portion 14B of the load transmitting member 14, and is pin-connected to one end of the second link 102 at a node 104 located on the inner side in the vehicle width direction from the connecting position. The other end of the second link 102 is pin-connected to one end of the third link 103 at a node 106. The other end of the third link 103 is pin-coupled to the vehicle body side at the node 108.

  The internode distance from the node 104 to the node 106 and the internode distance from the node 106 to the node 108 are set to be equal, for example. That is, the lengths of the second link 102 and the third link 103 are substantially equal. The overhang amount of the shock absorbing pad 92 at the time of a side collision can be set by the distance between the nodes 104 and 108 at the normal time and the lengths of the second link 102 and the third link 103.

  The nodes 104 and 108 are arranged on a straight line, for example, along the vehicle width direction, but the node 106 connecting the second link 102 and the third link 103 is slightly seated than the nodes 104 and 108. Located on the front side. Accordingly, the second link 102 and the third link 103 are convex on the front side of the seat. This is because when the load transmission member 14 is displaced inward in the vehicle width direction, the link-like push-out member 90 stably projects to the front of the seat.

  10 and 11, the shock absorbing pad 92 is supported at the side end portion of the seat back 26 so as to be rotatable about the vertical direction of the seat back 26 as a rotation axis. It is comprised so that it may be rotated by and may be extruded to the front side of the seat. The shock absorbing pad 92 is, for example, a foamed resin provided on the back side of the base material 39 in the side sheet 36, and the inclined surface 92 </ b> A that contacts the link-like extrusion member 90 is formed on the link-like extrusion member 90. It is formed on the front side of the seat toward the outside of the vehicle and the rear side of the seat. In the shock absorbing pad 92, a protruding portion 92B is formed on the inner side in the vehicle width direction than the inclined surface 92A.

  The inclined surface 92A of the link-like push-out member 90 is formed to be parallel to the third link 103 in a normal state, for example. As a result, the inclined surface 92A is along the third link 103 in a normal state, and when the load transmitting member 14 is displaced inward in the vehicle width direction and the link-like pushing member 90 projects to the front of the seat, the inclined surface 92A Of the link-like push-out member 90, the inclined surface 92A of the shock absorbing pad 92 can be immediately pressed forward by the third link 103 mainly.

  As shown in FIG. 11, for example, a pin 110 projecting downward from the side seat 36 at the inner end in the vehicle width direction of the base 39 in the side seat 36 is a straight line in the height direction of the side seat 36. For example, a pair is arranged on the line. The pins 110 are provided, for example, at a position approximately 1/3 from the top in the height direction of the side seat 36 and a position approximately 1/3 from the bottom.

  As shown in FIG. 10, a pair of support brackets 112 protrude from the side end portion of the seat back 26 to the outside in the seat width direction, corresponding to the pins 110 of the side seat 36. The support bracket 112 is fixed to a seat back frame (not shown).

  The pins 110 are inserted into the through holes (not shown) of the support bracket 112 from above the seat. The side seat 36 is supported by the support bracket 112 so as to be rotatable about the vertical direction of the seat back 26 as a rotation axis. More specifically, the side seat 36 is rotatable with the axial direction of the pair of pins 110 arranged on a straight line as a rotation axis.

  As shown in FIG. 11, in the side seat 36, the pins 110 protrude downward from the seat. Therefore, the assembly of the side seat 36 is performed in the direction of arrow A, for example, from the top of the seat to the bottom of the seat. It is like that. Since the support bracket 112 and the pin 110 are disposed on the rear side of the seat with respect to the front surface of the seat back 26, the appearance is not impaired.

  Since other parts are the same as those in the first embodiment, the same parts are denoted by the same reference numerals in the drawings, and the description thereof is omitted.

(Function)
This embodiment is configured as described above, and the operation thereof will be described below. Of the actions of the side collision occupant protection device 30 according to the present embodiment, the action until the load transmitting member 14 is displaced inward in the vehicle width direction after the side collision to the side of the vehicle body occurs is the first implementation. It is the same as the form.

  In FIG. 12, when the load transmission member 14 is displaced inward in the vehicle width direction, the first link 101 connected to the load transmission member 14 in the link-like pushing member 90 is also displaced inward in the vehicle width direction. Then, the node 104 connecting the first link 101 and the second link 102 and the node 108 connecting the other end of the third link 103 approach each other, and accordingly the second link 102 is connected. And the node 106 connecting the third link 103 is displaced forward of the seat. That is, the link-like push member 90 projects toward the front of the sheet.

  As shown in FIG. 10, in the normal state, the third link 103 of the link-like pushing member 90 is along the inclined surface 92A of the shock absorbing pad 92, so that the link-like pushing member 90 projects to the front of the sheet. In this case, the inclined surface 92A of the shock absorbing pad 92 can be immediately pressed forward by the third link 103. As a result, as shown in FIG. 12, the shock absorbing pad 92 rotates at the pin 110 supported by the support bracket 112 with the vertical direction of the seat back 26 (the axial direction of the pin 110) as the rotation axis. Extruded to the side. Thereby, since the shock absorbing pad 92 is interposed between the occupant 28 and the vehicle body side portion, the occupant 28 can be protected from an impact at the time of a side collision.

  As described above, the side collision occupant protection device 30 according to the present embodiment uses a low-cost configuration in which the link-like push-out member and the rotatable shock absorbing pad 92 are combined, so that the impact at the time of a side collision is achieved. The absorbent pad 92 can be interposed between the occupant 28 and the vehicle body side. For this reason, comparatively expensive parts, such as an inflator used for a general side airbag device, are unnecessary, and the side collision occupant protection device 30 can be provided at low cost.

  In each of the above-described embodiments, the pressing member 16, the pushing member 86, and the link-like pushing member 90 are given as the operating means. However, the operating means is not limited to these, and a side collision detection sensor, an inflator, or the like is used. A configuration in which an impact mitigating member can be mechanically interposed between the occupant 28 and the vehicle body side by using the impact load F at the time of a side collision as a driving force without using relatively expensive parts. That's fine.

  Moreover, although the expansion | deployment member 12 and the impact absorption pads 88 and 92 were mentioned as an impact relaxation member, it is not restricted to this, For example, an impact absorption rib may be sufficient.

1 to 6 relate to the first embodiment, and FIG. 1 is a perspective view showing a side collision occupant protection device provided at a side end portion of a seat back in a rear seat. FIG. 2 is an enlarged cross-sectional view taken along arrow 2-2 in FIG. 1 showing a side collision occupant protection device. It is a disassembled perspective view which shows the assembly | attachment state of the load transmission member to a body inner panel, a boss | hub, and a base. (A) It is a 4A-4A arrow expanded sectional view in FIG. 3 which shows the structure of a load transmission member, a boss | hub, and a base. (B) It is an expansion perspective view which shows the notch provided in the axial part of the load transmission member (it respond | corresponds to the 4B part of the same figure (A)). It is a perspective view which shows the case provided in the side seat | sheet, and the press member provided in this case. It is sectional drawing which shows the state which the expansion | deployment member expand | deployed between the passenger | crew and the door trim by the impact load at the time of a side collision. FIGS. 7 to 9 relate to the second embodiment, and FIG. 7 is a cross-sectional view showing a side collision occupant protection device. It is a perspective view which shows the impact-absorbing pad provided in the side seat. FIG. 6 is a cross-sectional view showing a state where an impact absorbing pad is pushed forward of a seat by an impact load at the time of a side collision and is interposed between an occupant and a door trim. 10 to 12 relate to the third embodiment, and FIG. 10 is a cross-sectional view showing a side collision occupant protection device. It is a perspective view which shows the impact-absorbing pad provided in the side seat. FIG. 6 is a cross-sectional view showing a state where an impact absorbing pad is pushed out while being rotated by an impact load at the time of a side collision and is interposed between an occupant and a door trim.

Explanation of symbols

10 Side collision occupant protection device 12 Deployment member (impact mitigation member)
14 Load transmitting member 16 Pressing member (actuating means)
18 Container (operating means)
18A Exit part 20 Side collision occupant protection device 22 Valve mechanism (actuating means)
24 rear seat 26 seat back 28 occupant 30 side occupant protection device 32 door trim (vehicle body side)
38 Side door (vehicle body side)
44 Door inner panel 44A Vertical wall part 50 Body outer panel (vehicle body side part)
52 Body inner panel (vehicle side)
86 Extruded member (actuating means)
88 Shock Absorbing Pad (Shock Mitigation Member)
88A Inclined surface 90 Link-like extruded member (actuating means)
92 Shock absorbing pad (impact mitigating member)
F Impact load

Claims (5)

An impact mitigating member that is provided at a side end portion of the seat back of the rear seat and is interposed between an occupant seated on the rear seat and a vehicle body side portion at the time of a side collision, thereby mitigating an impact on the occupant When,
A load transmitting member that is provided on the side of the seat back of the vehicle body side portion and transmits an impact load to the vehicle inner side in accordance with the deformation of the vehicle body side portion at the time of a side collision;
Of the side ends of the seat back, the shock transmission member is disposed on the vehicle inner side of the load transmission member, and the impact load transmitted through the load transmission member is used as a driving force, so that the impact mitigation member and the occupant are used. Operating means interposed between the vehicle body side parts;
A side collision occupant protection device characterized by comprising:   The load transmitting member is disposed on the inner side in the vehicle width direction of the vertical wall portion corresponding to the vertical wall portion extending in the vehicle width direction of the door inner panel. Side impact occupant protection device. As the operating means,
A pressing member disposed on the vehicle inner side of the load transmission member and configured to be displaceable on the vehicle inner side by operation of the load transmission member at the time of a side collision;
A bag-shaped container that is configured so that a fluid is sealed inside, is compressed by the pressing member and is contracted, and the fluid can be discharged from an outlet portion;
A valve mechanism that is provided in the outlet portion and opens when a predetermined pressure is applied to the outlet portion side to allow the fluid to be discharged from the outlet portion, and can control the backflow of the fluid; Have
The impact mitigating member is connected to the valve mechanism and is stored in a folded state at the side end portion of the seat back, and can be deployed between the occupant and the vehicle body side portion by receiving the supply of the fluid. The side collision occupant protection device according to claim 1 or 2, wherein the side collision occupant protection device is a deployment member. As the operating means,
An extrusion member provided at the vehicle inner end of the load transmission member and configured to be displaced toward the vehicle inner side by the operation of the load transmission member at the time of a side collision;
An inclined surface provided on the vehicle inner side of the pushing member among the impact mitigating members, and facing the vehicle outer side and the seat rear side,
The said impact relaxation member is comprised so that it may be extruded ahead of a sheet | seat, when the said extrusion member displaces inside a vehicle and slides on the said inclined surface relatively. The side collision occupant protection device according to claim 2. As the operating means,
A link-like push-out member that is connected to the vehicle inner end portion of the load transmission member on the rear side of the impact mitigating member and that projects to the front side of the seat by the operation of the load transmission member at the time of a side collision. Have
The impact relaxation member is supported at the side end portion of the seat back so as to be rotatable about the vertical direction of the seat back as a rotation axis, and is rotated by the protrusion of the push-out member to be pushed out to the front side of the seat. The side collision occupant protection device according to claim 1, wherein the side collision occupant protection device is configured.

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