JP4532439B2 - Skeletal structure of vehicle seat - Google Patents

Description

  The present invention relates to a skeletal structure of a vehicle seat.

It has a reclining shaft that pivotally supports the seat back so that it can swing and both ends are fixed to the side body member that constitutes the side of the vehicle. Is disclosed (see Patent Document 1).
JP 2003-118457 A

  However, in the above-described conventional example, when the rotation center of the seat back is arranged offset from the position of the normal reclining shaft, the side impact load is efficiently transmitted in the vehicle width direction via the reclining shaft. It was difficult.

  In consideration of the above facts, an object of the present invention is to efficiently transmit a side impact load in the vehicle width direction at the time of a side collision with a vehicle and suppress deformation of the vehicle body.

The invention according to claim 1 is fixed to the seat back of the vehicle seat, and is connected to the vehicle interior side of the vehicle side portion so as to be rotatable at a position offset from the fixed position to the front of the vehicle, is arranged in the vehicle width direction to the seat back, have a, a load transmission member restricting portion for restricting the deformation of the vehicle width direction inner side is provided at an end of the connecting member during a side collision, the connecting member Has a proximity portion that extends in the vehicle front-rear direction corresponding to the vehicle longitudinal direction range of the restriction portion and is closer to the restriction portion than the support position at the vehicle side portion and faces the restriction portion in the vehicle width direction. It is characterized by that.

  In the skeleton structure of the vehicle seat according to claim 1, the connecting member fixed to the seat back is rotatably supported on the vehicle interior side of the vehicle side portion at a position offset from the fixed position to the front of the vehicle. Therefore, even if the input position of the side impact load at the time of a side collision to the vehicle is offset to the front of the vehicle with respect to the load transmission member provided on the seat back, the load transmission member transmits the side impact load through the connecting member. Can be communicated to. At this time, since the deformation of the connecting member toward the inner side in the vehicle width direction is restricted by the restriction portion at the end of the load transmitting member, the side impact load is efficiently transmitted in the vehicle width direction to suppress the vehicle body deformation. It is possible.

Further , the connecting member extends in the vehicle front-rear direction corresponding to the vehicle longitudinal direction range of the restriction portion, and has a proximity portion that is close to the restriction portion in the load transmission member and faces the restriction portion in the vehicle width direction. When a side collision load is input due to a side collision with the vehicle, the side collision load can be promptly transmitted from the proximity portion of the connecting member to the load transmission member through the restricting portion, thereby suppressing deformation of the vehicle body.

According to a second aspect of the present invention, in the frame structure of the vehicle seat according to the first aspect , the restricting portion is configured to be wide in the vehicle front-rear direction corresponding to the vehicle front-rear direction range of the proximity portion. It is characterized by being.

In the skeleton structure of the vehicle seat according to claim 2 , the restricting portion is configured as a load receiving portion that is wide in the vehicle front-rear direction corresponding to the vehicle front-rear direction range of the proximity portion provided in the connecting member, The deformation of the connecting member toward the inside in the vehicle width direction can be restricted by the load receiving portion, and the local deformation at the end of the load transmitting member can be suppressed. For this reason, it is possible to efficiently transmit the side impact load from the connecting member to the load transmitting member and to suppress the deformation of the vehicle body.

According to a third aspect of the present invention, in the skeleton structure of the vehicle seat according to the first aspect , the restricting portion is a reinforcing member that is disposed on an end surface of the load transmitting member and reinforces the end surface. .

In the skeleton structure of the vehicle seat according to claim 3 , since the restricting portion is a reinforcing member that is disposed on the end face of the load transmitting member and reinforces the end face, a side impact load is transmitted from the connecting member through the restricting portion. When transmitting to a member, it can suppress that a local deformation | transformation arises in the end surface of this load transmission member. For this reason, the side impact load can be efficiently distributed from the connecting member to each part of the vehicle body through the load transmission member, and the vehicle body deformation can be suppressed.

According to a fourth aspect of the present invention, in the skeleton structure of the vehicle seat according to the first aspect , the load transmitting member corresponds to a vehicle front-rear direction range of the proximity portion over the entire length in the vehicle width direction. It is characterized by being configured to be wide in the front-rear direction.

In the vehicle seat skeleton structure according to claim 4 , the load transmitting member is configured to be wide in the vehicle front-rear direction over the entire length in the vehicle width direction, and the connecting member is deformed inward in the vehicle width direction. It can be regulated by the end of the load transmitting member. For this reason, the frame structure of the vehicle seat capable of efficiently transmitting the side impact load from the connecting member to the load transmitting member and suppressing the deformation of the vehicle body can be provided at a lower cost.

  As described above, according to the skeleton structure of the vehicle seat according to claim 1 of the present invention, the side collision load is efficiently transmitted in the vehicle width direction at the time of a side collision with the vehicle, and the vehicle body deformation It is possible to obtain an excellent effect that it can be suppressed.

According to the skeleton structure of the vehicle seat according to claim 2 , when the side impact load is transmitted from the connecting member to the load transmitting member, deformation of the connecting member in the vehicle width direction is restricted by the load receiving portion. It is possible to obtain an excellent effect that it is possible to suppress the local deformation at the end of the load transmitting member.

According to the skeleton structure of the vehicle seat according to claim 3 , when the side collision load is transmitted from the connecting member to the load transmission member, local deformation is suppressed from occurring on the end surface of the load transmission member. An excellent effect that the load can be efficiently distributed to each part of the vehicle body to suppress the vehicle body deformation is obtained.

According to the skeleton structure of the vehicle seat according to claim 4 , the skeleton structure of the vehicle seat capable of efficiently transmitting the side impact load from the connecting member to the load transmitting member and suppressing the vehicle body deformation is further reduced. An excellent effect that it can be provided at a cost is obtained.

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

[First Embodiment]
In FIG. 1, a vehicle seat skeleton structure 10 (FIG. 2) according to the present embodiment is a structure related to a skeleton of a vehicle seat 12 that is provided, for example, at a rear portion of a vehicle and a seat back 14 is configured to be retractable. As shown in FIG. 2, the connecting member 16 and the load transmitting member 18 are included.

  The connecting member 16 is fixed to the seat back 14 of the vehicle seat 12 and is rotatably supported on the vehicle interior side of the vehicle side portion at a position offset forward from the fixed position. Specifically, a rear wheel house 21 is provided on the side of the vehicle body, and the rear wheel house inner 22 is reinforced by a reinforcing member 24 extending in the vehicle front-rear direction, for example. The connecting member 16 is pivotally attached to the reinforcing member 24 using, for example, a bolt 26, a nut 28, and a collar 32 at the front end portion 16F.

  The connecting member 16 is located on the outermost side in the vehicle width direction at the front end portion 16F, and protrudes inward in the vehicle width direction from the rear end of the front end portion 16F, and close to the seat back 14, and the proximity portion 16A And a fixing portion 16B extending inward in the vehicle width direction along the back surface of the seat back panel 34 from the rear end. The fixing portion 16B is fixed to the seat back panel 34 with bolts 36 and nuts 38.

  For example, an engagement portion 16C that is bent forward of the vehicle, for example, is provided at the inner end of the connecting member 16 in the vehicle width direction. The engagement portion 16C is provided on the vehicle rear side with respect to the seat back panel 34. To the front side of the vehicle. This facilitates positioning when the connecting member 16 is attached to the seat back panel 34, and when the side collision load is input to the connecting member 16 due to a side collision with the vehicle, the connecting member 16 is attached to the seat back panel. This is to suppress movement inward in the vehicle width direction relative to 34.

  Since the proximity portion 16A of the connecting member 16 protrudes inward in the vehicle width direction from the front end portion 16F pivotally supported by the reinforcing member 24, the proximity member 16A is separated from the reinforcing member 24 by a distance D, for example. However, in order to reduce the distance D, the reinforcing member 24 is provided with, for example, a hat-shaped load transmitting portion 40 that extends in the vertical direction of the vehicle, so that the side collision load input to the reinforcing member 24 at the time of a side collision can be reduced. The transmission can be more directly transmitted to the proximity portion 16 </ b> A of the connecting member 16. Note that the proximity portion 16A and the periphery thereof in the connecting member 16 are press-molded, for example, in a substantially hat shape in order to increase the section modulus.

  The load transmission member 18 is a rigid member having a hat-shaped cross section, for example, disposed on the seat back 14 in the vehicle width direction, and is fixed to the seat back panel 34 at the flange portion 18F. The end portion 18E of the load transmitting member 18 is provided with a load receiving member 42 that is configured to be wide in the vehicle front-rear direction corresponding to the vehicle front-rear direction range of the proximity portion 16A of the connection member 16, and is a connection member at the time of a side collision. The deformation to the inner side in the vehicle width direction of 16 can be regulated.

  The load receiving member 42 is, for example, a rigid member having a hat-shaped cross section, similarly to the load transmitting member 18, and is fixed to the seat back panel 34 at the flange portion 42F. The width of the load receiving member 42 in the vehicle front-rear direction is, for example, gradually increased from the vehicle width direction inner end 42B toward the vehicle width direction outer end 42A, and the vehicle width direction outer end 42A is the widest in the vehicle front-rear direction. It is configured.

  The vehicle width direction outer side end portion 42A corresponds to the vehicle front-rear direction range of the proximity portion 16A of the connection member 16, and when the connection member 16 is deformed inward in the vehicle width direction when a side collision load is input, the proximity thereof The part 16A can be received in a wide range in the vehicle front-rear direction. Here, the vehicle width direction outer side end portion 42A corresponds to the vehicle front-rear direction range of the proximity portion 16A. The vehicle width direction outer side end portion 42A has a shape that can cover substantially the entire area of the proximity portion 16A. That means.

  The inner end 42B in the vehicle width direction is set, for example, on the inner side in the vehicle width direction relative to the fastening position of the bolt 36 and the nut 38, and is fixed in a state of being overlapped with the end 18E of the load transmission member 18, for example. Yes.

  Although the load receiving member 42 is fixed to the end 18E of the load transmitting member 18, the present invention is not limited to this, and a portion corresponding to the load receiving member 42 is formed integrally with the load transmitting member 18. May be. Further, the cross-sectional shape of the load transmitting member 18 is not limited to the cross-sectional hat shape.

  A side seat 46 is provided on the vehicle interior side of the rear wheel house inner 22, the reinforcing member 24, and the connecting member 16, and a cushion 44 for the seat back 14 is provided in front of the seat back panel 34. . As shown in FIG. 1, a seat cushion 48 is provided below the side seat 46 and the seat back 14, and the connecting member 16 (FIG. 2) is used as a hinge so that the seat back 14 is moved forward of the vehicle. The seat cushion 48 can be folded down and folded on the seat cushion 48. Note that the side seat 46 may be configured integrally with the cushion 44. In this case, the side seat 46 can be moved forward together with the seat back 14.

(Function)
This embodiment is configured as described above, and the operation thereof will be described below. In FIG. 1, in the vehicle seat 12 having the vehicle seat skeleton structure 10 (FIG. 2), the seat back 14 can be tilted forward of the vehicle and folded on the seat cushion 48 during normal use.

  On the other hand, in FIG. 3, in the vehicle seat skeleton structure 10, the connecting member 16 fixed to the seatback 14 is offset from the fixed position toward the front of the vehicle. Even if the input position of the side collision load F at the time of a side collision to the vehicle is offset to the front of the vehicle with respect to the load transmission member 18 provided on the seat back 14. The side impact load F can be transmitted to the load transmitting member 18 through the connecting member 16.

  Specifically, as shown in FIG. 3, when a side collision load F is input to, for example, the rear wheel house 21 on the side of the vehicle body due to a side collision with the vehicle, the rear wheel house is caused by the side collision load F. 21, the reinforcing member 24 and the connecting member 16 are deformed inward in the vehicle width direction. Since the load transmitting portion 40 is provided between the reinforcing member 24 and the proximity portion 16 </ b> A of the connecting member 16, the side impact load F input to the reinforcing member 24 is connected via the load transmitting portion 40. It is possible to transmit directly to the proximity portion 16 </ b> A of the member 16.

  The proximity portion 16A is close to the load receiving member 42 provided at the end 18E of the load transmitting member 18 and faces the load receiving member 42 in the vehicle width direction, and the connecting member 16 is located on the inner side in the vehicle width direction. By deforming, the load receiving member 42 quickly comes into contact with the outer end 42A in the vehicle width direction.

  When the proximity portion 16A of the connecting member 16 abuts against the load receiving member 42, the side collision load F is transmitted to the load transmitting member 18 in the vehicle width direction, but the vehicle width direction outer end portion 42A of the load receiving member 42 is Since the proximity portion 16A is configured to be wide in the vehicle longitudinal direction corresponding to the vehicle longitudinal direction range, the proximity portion 16A can be received widely, and the load receiving member 42 allows the connecting member 16 to move inward in the vehicle width direction. It is possible to regulate the deformation of.

  Further, in the load receiving member 42, since the vehicle longitudinal direction width gradually decreases from the vehicle width direction outer end portion 42A toward the vehicle width direction inner end portion 42B, stress concentration hardly occurs during transmission of the side collision load F. Local deformation at the end 18E of the transmission member 18 can be suppressed. For this reason, the side collision load F can be transmitted in the vehicle width direction along the load transmission member 18, which is efficient, and the vehicle body deformation is suppressed by dispersing the side collision load F in each part of the vehicle body. Is possible.

[Second Embodiment]
In FIG. 4, for example, a pipe is used as the load transmitting member 50 in the vehicle seat skeleton structure 20 according to the present embodiment. An end surface 50E of the load transmitting member 50 is disposed, for example, at an end in the vehicle width direction of the seat back 14, and the end surface 50E is deformed inward in the vehicle width direction of the connecting member 16 at the time of a side collision. A reinforcing member 52 is provided as an example of a restricting portion that restricts the above.

  The reinforcing member 52 is configured to reinforce the end surface 50E of the load transmitting member 50 and to suppress local deformation of the end surface 50E at the time of a side collision. Specifically, the reinforcing member 52 is fixed to the end face 50E and is opposed to the proximity portion 16A of the connecting member 16 in the vehicle width direction, and the vehicle of the load transmission member 50 from the rear end of the flat plate portion 52A. It has a base 52B formed so as to wrap around the rear, and a bent portion 52C extending forward from the vehicle width direction inner end of the base 52B.

  The flat plate portion 52 </ b> A is formed in a size that can cover substantially the entire area of the proximity portion 16 </ b> A of the connecting member 16. The base 52B is fixed to the seat back panel 34, and the front end of the bent portion 52C is fixed to the load transmitting member 50. That is, the reinforcing member 52 also serves as a bracket for fixing the load transmitting member 50 to the seat back panel 34.

  The configuration around the reinforcing member 52 is not limited to that shown in the figure, and local deformation of the end surface 50E of the load transmitting member 50 is suppressed at the time of a side collision, so that the connecting member 16 is deformed inward in the vehicle width direction. Any configuration that can be suppressed is acceptable.

  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. As shown in FIG. 5, in the skeleton structure 20 for a vehicle seat, when a side collision load F is input to, for example, the rear wheel house 21 on the side of the vehicle body due to a side collision with the vehicle, The rear wheel house 21, the reinforcing member 24, and the connecting member 16 are deformed inward in the vehicle width direction. Since the load transmitting portion 40 is provided between the reinforcing member 24 and the proximity portion 16 </ b> A of the connecting member 16, the side impact load F input to the reinforcing member 24 is connected via the load transmitting portion 40. It is possible to transmit directly to the proximity portion 16 </ b> A of the member 16. The proximity portion 16A is close to the reinforcing member 52 provided on the end surface 50E of the load transmitting member 50 and faces the reinforcing member 52 in the vehicle width direction, and the connecting member 16 is deformed inward in the vehicle width direction. By this, the flat plate portion 52A of the reinforcing member 52 is quickly brought into contact.

  When the proximity portion 16A of the connecting member 16 contacts the reinforcing member 52, the side collision load F is transmitted to the load transmitting member 50 in the vehicle width direction, but the flat plate portion 52A of the reinforcing member 52 is fixed to the end surface 50E. Therefore, when the side collision load F is transmitted, local deformation of the end surface 50E of the load transmitting member 50 can be suppressed, and deformation of the connecting member 16 inward in the vehicle width direction can be restricted. it can. For this reason, the side collision load F can be transmitted in the vehicle width direction along the load transmission member 50, which is efficient, and the vehicle body deformation is suppressed by dispersing the side collision load F in each part of the vehicle body. Is possible. Even if the load resistance of the vehicle body side portion is relatively low, it is possible to cope with a side collision.

[Third Embodiment]
In FIG. 6, in the vehicle seat skeleton structure 30 according to the present embodiment, the load transmission member 54 extends over the entire length in the vehicle width direction corresponding to the vehicle longitudinal direction range of the proximity portion 16 </ b> A of the connecting member 16. The vehicle is wide in the longitudinal direction. The load transmitting member 54 is a rigid member having a hat-shaped cross section, for example, disposed on the seat back 14 in the vehicle width direction, and is fixed to the seat back panel 34 at the flange portion 54F.

  That is, in the load transmission member 54, the vehicle front-rear direction width of the end portion 54E has a wide cross-sectional shape corresponding to the vehicle front-rear direction range of the proximity portion 16A, and the end portion 54E is in a side collision. It is a restricting portion that restricts deformation of the connecting member 16 inward in the vehicle width direction. The load transmitting member 54 has substantially the same cross-sectional shape over the entire length in the vehicle width direction, so that local deformation does not occur in the end portion 54E when a side collision load is transmitted.

  In the illustrated example, the reinforcing member is not provided at the end portion 54E of the load transmitting member 54. However, the end portion 54E is reinforced by a plate-like member such as the reinforcing member 52 (FIG. 4) in the second embodiment. You may make it do. Further, the cross-sectional shape of the load transmitting member 54 is not limited to the cross-sectional hat shape.

  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. As shown in FIG. 7, in the skeleton structure 30 for a vehicle seat, when a side collision load F is input to, for example, the rear wheel house 21 on the side of the vehicle body due to a side collision with the vehicle, the side collision load F The rear wheel house 21, the reinforcing member 24, and the connecting member 16 are deformed inward in the vehicle width direction. Since the load transmitting portion 40 is provided between the reinforcing member 24 and the proximity portion 16 </ b> A of the connecting member 16, the side impact load F input to the reinforcing member 24 is connected via the load transmitting portion 40. It is possible to transmit directly to the proximity portion 16 </ b> A of the member 16. The proximity portion 16A is close to the end portion 54E of the load transmitting member 54 and faces the reinforcing member 54 in the vehicle width direction. The connecting member 16 is deformed inward in the vehicle width direction, so that the load is transmitted quickly. It contacts the end 54E of the member 54.

  When the proximity portion 16A of the connecting member 16 contacts the reinforcing member 52, the side collision load F is transmitted to the load transmitting member 54 in the vehicle width direction. The load transmitting member 54 is connected to the adjacent portion 16A of the connecting member 16. Corresponding to the vehicle longitudinal direction range, the vehicle is configured to be wide in the vehicle longitudinal direction over the entire length in the vehicle width direction. Local deformation can be suppressed, and deformation of the connecting member 16 inward in the vehicle width direction can be restricted. For this reason, the side collision load F can be transmitted in the vehicle width direction along the load transmission member 54, which is efficient, and the deformation of the vehicle body is suppressed by dispersing the side collision load F in each part of the vehicle body. Is possible. Further, since the load transmitting member 54 itself can restrict the deformation of the connecting member 16 in the vehicle width direction, the cost is low.

  In each of the above embodiments, examples of the restricting portion provided at the end of the load transmitting member are described. However, the restricting portion is not limited to these examples, and the vehicle width direction of the connecting member 16 at the time of a side collision. Other configurations may be used as long as the inward deformation can be restricted.

1 to 3 are perspective views of a vehicle seat to which the first embodiment, the second embodiment, or the third embodiment is applied. 2 and 3 relate to the first embodiment, and FIG. 2 is a cross-sectional view taken along arrow 2-2 in FIG. In FIG. 2, when a side impact load is input to the rear wheel house, deformation of the connecting member inward in the vehicle width direction is restricted by the load receiving member, and the side impact load is efficiently transmitted from the connecting member to the load transmitting member. It is sectional drawing which shows the state currently transmitted to. 4 and 5 relate to the second embodiment, and FIG. 4 is a cross-sectional view taken along arrow 4-4 in FIG. In FIG. 4, when a side collision load is input to the rear wheel house, deformation of the connecting member inward in the vehicle width direction is restricted by the reinforcing member, and the side collision load is efficiently transferred from the connecting member to the load transmitting member. It is sectional drawing which shows the state which has transmitted. 6 and 7 relate to the third embodiment, and FIG. 6 is a cross-sectional view taken along arrow 6-6 in FIG. In FIG. 6, when a side impact load is input to the rear wheel house, the load transmitting member is formed so that the deformation of the connecting member inward in the vehicle width direction is wide in the vehicle longitudinal direction over the entire length in the vehicle width direction. FIG. 6 is a cross-sectional view illustrating a state in which the side impact load is efficiently transmitted from the connecting member to the load transmitting member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Frame structure of vehicle seat 12 Vehicle seat 14 Seat back 16 Connecting member 16A Proximity portion 18 Load transmission member 18E End portion 20 Frame structure of vehicle seat 24 Reinforcement member (vehicle body side portion)
30 Skeletal structure of vehicle seat 42 Load receiving member (regulator)
50 Load transmitting member 52 Reinforcing member (regulator)
54 Load transmission member 54E End (regulator)

Claims (4)

A coupling member fixed to the seat back of the vehicle seat and rotatably supported on the vehicle interior side of the vehicle side portion at a position offset from the fixed position to the front of the vehicle;
A load transmitting member provided on the seat back in the vehicle width direction and provided with a restricting portion at an end portion for restricting deformation of the connecting member in the vehicle width direction at the time of a side collision;
I have a,
The connecting member extends in the vehicle front-rear direction corresponding to the vehicle longitudinal direction range of the restriction portion, and is closer to the restriction portion than the support position at the vehicle side portion and is close to the restriction portion in the vehicle width direction. A vehicle frame structure characterized by having a portion . 2. The vehicle seat skeleton structure according to claim 1 , wherein the restriction portion is a load receiving member configured to be wide in a vehicle front-rear direction corresponding to a vehicle front-rear direction range of the proximity portion. 2. The vehicle seat skeleton structure according to claim 1 , wherein the restricting portion is a reinforcing member that is disposed on an end surface of the load transmitting member and reinforces the end surface. 2. The vehicle according to claim 1 , wherein the load transmission member is configured to be wide in the vehicle front-rear direction over the entire length in the vehicle width direction corresponding to the vehicle front-rear direction range of the proximity portion. The skeletal structure of the sheet.

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