JP2013216209A - Seat device for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seat device for an automobile capable of sufficiently securing a development space of a side airbag.SOLUTION: In a seat device 10 for an automobile, the rotation of a seat body 11 around a rotary shaft 56 is usually restricted by a rotation lock actuator 58. Meanwhile, when a side collision ECU detects a side collision, the rotation restriction is released to activate a rotation driving actuator 52 and an inflator 48. Thereby, the seat body 11 is displaced by a driving force of the rotation driving actuator 52 toward inside in a vehicle width direction, and furthermore, a side airbag 46 is inflated and deployed between a seated occupant P and a side door 20. In this case, the rotation driving actuator 52 displaces the seat body 11 toward inside in the vehicle width direction by its own driving force regardless of deformation of a vehicle body side 18 due to the side collision, whereby the seat body 11 can be displaced toward inside in the vehicle width direction before the side door 20 or the like enters inside in the vehicle width direction.

Description

  The present invention relates to an automobile seat device provided with a side airbag device.

  In the vehicle seat mounting structure described in Patent Document 1, the outer side in the vehicle width direction of the seat portion of the seat is connected to the side sill via a seat mounting member separate from the floor panel. The seat mounting member is configured to tilt the seat inward in the vehicle width direction by pushing up the outer side in the vehicle width direction of the seat portion in conjunction with the deformation of the side sill at the time of a side collision. Thus, a sufficient deployment space for the side airbag is ensured, and displacement from the protective restraint position by the occupant's side airbag or the like is prevented.

JP 2002-264848 A

  However, in the seat mounting structure as described above, the side sill, that is, the side portion of the vehicle body is deformed (invaded) inward in the vehicle width direction, and thus the seat is tilted inward in the vehicle width direction. The deployment space of the side airbag should be narrowed by the intrusion of the side of the vehicle body inward in the vehicle width direction. For this reason, there is room for improvement in terms of securing a sufficient deployment space for the side airbag.

  In view of the above facts, an object of the present invention is to provide an automobile seat device capable of sufficiently securing a deployment space for a side airbag.

  An automobile seat device according to a first aspect of the present invention includes a seat main body that is connected to a vehicle body floor portion so as to be displaceable inward in the vehicle width direction, and a side portion in the vehicle width direction outer side of the seat back of the seat main body. A side airbag device that inflates and deploys a side airbag between the seated occupant and the vehicle body side portion by being disposed and operated, and restricting displacement of the seat body inward in the vehicle width direction, A driving device that displaces the seat body inward in the vehicle width direction by a driving force when operated, and a control device that operates the driving device and the side airbag device when a side collision of the vehicle is detected or predicted. And.

  In the first aspect of the invention, the seat main body is connected to the vehicle body floor portion so as to be displaceable inward in the vehicle width direction, and the displacement of the seat main body is regulated by the driving device in a normal state. On the other hand, when the control device detects or predicts a side collision of the vehicle, the drive device and the side airbag device are operated by the control device. Then, the drive device displaces the seat body inward in the vehicle width direction, and the side airbag device inflates and deploys the side airbag between the seated occupant and the vehicle body side portion. In this case, since the driving device displaces the seat body inward in the vehicle width direction by its own driving force regardless of the deformation of the side part of the vehicle body due to the side collision, before the vehicle body side portion enters the inner side in the vehicle width direction. The seat body can be displaced inward in the vehicle width direction. Thereby, the deployment space of the side airbag can be sufficiently secured.

  A vehicle seat device according to a second aspect of the present invention is the vehicle seat device according to the first aspect, wherein the seat body is rotatable about a rotation axis along a vehicle vertical direction on an outer side in a vehicle width direction on a front end side of the seat cushion. It is connected to the floor and is rotated inward in the vehicle width direction around the rotation shaft by the operation of the driving device.

  In the second aspect of the present invention, when the driving device operates, the seat body rotates inward in the vehicle width direction around the rotation shaft provided on the outer side in the vehicle width direction on the front end side of the seat cushion. As a result, the rear side (seat back side) of the seat body is displaced inward in the vehicle width direction. Moreover, since the seat body is rotated around the front end side of the seat cushion and the outside in the vehicle width direction, the rear side of the seat body can be greatly displaced inward in the vehicle width direction even at a small rotation angle. Thereby, the deployment space of a side airbag can be expanded effectively.

  A vehicle seat device according to a third aspect of the present invention is the vehicle seat device according to the second aspect, wherein the driving device includes a lock mechanism that restricts rotation of the seat body inward in the vehicle width direction and the seat body inward in the vehicle width direction A rotation driving actuator that rotates the rotation driving actuator, and the control device releases the rotation restriction by the lock mechanism before operating the rotation driving actuator.

  According to the third aspect of the present invention, the control device that detects or predicts a side collision of the vehicle releases the rotation restriction of the seat body by the lock mechanism, and then operates the rotation drive actuator. Accordingly, the seat body is rotated inward in the vehicle width direction by the driving force of the rotation driving actuator. As described above, in the present invention, since the lock mechanism that restricts the rotation of the seat main body inward in the vehicle width direction is provided, it is possible to reliably prevent the seat main body from inadvertently rotating inward in the vehicle width direction during normal times. can do.

  As described above, in the vehicle seat device according to the present invention, a sufficient space for deploying the side airbag can be secured.

1 is a perspective view illustrating a configuration of a vehicle seat device according to a first embodiment of the present invention. It is a top view which shows the partial structure of the motor vehicle carrying the same seat device for vehicles, (A) is a figure showing the state where a sheet main part is located in a normal position, and (B) is a retreat position of a sheet main part. It is a figure which shows the state rotated to the side. It is a perspective view which shows the structure of the actuator for rotational drive which is a structural member of the seat apparatus for motor vehicles. It is sectional drawing which shows the structure of the actuator for rotation locks which is a structural member of the vehicle seat apparatus, (A) is a figure which shows a non-operation state, (B) It is a figure which shows an operation state. It is a block diagram which shows the control system of the vehicle seat apparatus. It is a flowchart which shows the control procedure of the control apparatus of the vehicle seat apparatus. It is a diagram which shows the relationship between the contact load which a seated passenger receives from a side airbag, and time. It is a side view which shows the structure of the vehicle seat apparatus which concerns on 2nd Embodiment of this invention. It is a top view which shows the structure of the rotation frame which is a structural member of the vehicle seat apparatus, (A) is a figure which shows a normal state, (B) shows the state which the upper frame rotated with respect to the lower frame. FIG. It is sectional drawing which shows the structure of the lock mechanism which is a structural member of the same seat apparatus for motor vehicles. The structure of the hinge which is a structural member of the vehicle seat apparatus is shown, (A) is a plan view showing a normal state, (B) is a cross-sectional view showing the normal state, and (C) is an upper frame by the hinge. It is a top view which shows the state in which rotation of was controlled.

[First Embodiment]
An automotive seat device 10 according to a first embodiment of the present invention will be described with reference to FIGS. It should be noted that arrows FR, UP, and IN that are appropriately described in the drawings respectively indicate the front direction (traveling direction), the upward direction, and the inner side in the vehicle width direction of the vehicle to which the vehicle seat device 10 is applied. Hereinafter, when the description is made simply using the front-rear direction and the up-down direction, the front-rear direction of the vehicle and the up-down direction of the vehicle are indicated unless otherwise specified.

(Structure of the seat body)
As shown in FIG. 1, FIG. 2 (A) and FIG. 2 (B), the automobile seat device 10 includes a seat body 11 provided so that an occupant is seated facing forward. The seat body 11 includes a seat cushion 12 that forms a seating portion, a seat back 14 that has a lower end connected to the rear end of the seat cushion 12 to form a backrest, and a headrest 16 that is attached to the upper end of the seat back 14. It is configured as the main part. The seat body 11 is used for a driver's seat or a passenger seat, and is provided at a center portion in the vehicle width direction of a side door 20 disposed on the vehicle body side portion 18 and a floor panel 24 provided in the vehicle body floor portion 22. It is arranged between the floor tunnel portion 24A. 2A and 2B, 26 is a door panel of the side door 20, 28 is a door trim of the side door 20, and 30 is a B pillar of the vehicle body. Moreover, in FIG.1, FIG3, FIG.4, illustration of the floor panel 24 is abbreviate | omitted.

  As shown in FIG. 1, the seat cushion 12 includes a seat cushion frame 32 that constitutes a skeleton thereof, and a pair of left and right slide rails 34 </ b> L and 34 </ b> R that connect the seat cushion frame 32 to the vehicle body floor portion 22. A lower end portion of a seat back frame 35 constituting a skeleton of the seat back 14 is connected to the rear end portion of the seat cushion frame 32, and a leg portion of the headrest 16 is connected to an upper end portion of the seat back frame 35. ing.

  The slide rails 34 </ b> L and 34 </ b> R are slidably connected to an upper rail (not shown) fixed to the lower end portion of the seat cushion frame 32 with respect to a lower rail 38 fixed to a pair of front and rear floor crosses 25 constituting the vehicle body floor portion 22 ( Supported). Thereby, the seat body 11 can slide back and forth with respect to the vehicle body floor portion 22. However, the slide of the upper rail 36 with respect to the lower rail 38 is normally restricted by a slide lock mechanism (not shown), and the slide restriction by the slide lock mechanism is released by operating a lock release lever (not shown). Yes.

(Configuration of side airbag device)
The side airbag device 42 includes a side airbag 46 and an inflator (gas generator) 48. The side air bag 46 is folded and unitized together with the inflator 48 and is disposed in the door side side portion 14A (side portion in the vehicle width direction) of the seat back 14 via the inflator 48. The seat back frame 35 is fastened and fixed. In the side airbag device 42, gas is supplied into the side airbag 46 by operating the inflator 48, and the side airbag 46 is inflated and deployed between the seated occupant P and the door trim 28 by the pressure of the gas. (See FIG. 2B).

(Configuration of drive unit)
As shown in FIG. 1, the drive device 50 includes a rotary drive actuator 52 (here, a motor) disposed below the front end of the slide rail 34L disposed on the outer side in the vehicle width direction. As shown in FIG. 3, the rotation drive actuator 52 includes a housing 54 fixed to the upper surface of the front floor cloth 25 by bolts, nuts, and the like, and a rotation shaft 56 protruding above the housing 54. Yes. The rotary shaft 56 is arranged so that the axial direction is along the vertical direction, and when the rotary drive actuator 52 is operated, the rotary shaft 56 is rotated by a predetermined angle around one axis (in the direction of arrow R in FIG. 3). It has become.

  A flange-like mounting seat 56A is provided at the upper end portion of the rotating shaft 56, and the front end portion of the lower rail 38 in the slide rail 34L on the outer side in the vehicle width direction and the mounting seat 56A are fixed by bolts, nuts, and the like. Has been. As a result, the seat body 11 is connected to the vehicle body floor portion 22 so as to be rotatable about the rotation shaft 56 integrally with the rotation shaft 56, and when the rotation drive actuator 52 is actuated, FIG. Is rotated from the normal position shown in FIG. 2 to the retracted position shown in FIG. 2B (see arrow T in FIG. 2B). As a result, the rear side (seat back 14 side) of the seat body 11 is displaced by a predetermined amount inward in the vehicle width direction. 2A and 2B show a state in which the seat body 11 is located at the rear end of the slide range before and after the slide rails 34L and 34R (rearmost state). As shown in FIG. 2B, when the seat body 11 is rotated to the retracted position, the displacement amount of the seat body 11 (so that the B pillar 30 and the seated occupant P do not wrap in the side view of the vehicle). Rotation angle) is set.

  As shown in FIG. 1, the drive device 50 includes a plurality of (here, three) rotation lock actuators 58 (here, pull-type solenoids) as a lock mechanism. These three rotation locking actuators 58 are provided between the rear end portion of the lower rail 38 on the outer side in the vehicle width direction and the vehicle body floor portion 22, between the front end portion of the lower rail 38 on the inner side in the vehicle width direction and the vehicle body floor portion 22, and It is disposed between the rear end portion of the lower rail 38 on the inner side in the vehicle width direction and the vehicle body floor portion 22.

  As shown in FIG. 4A, these rotation lock actuators 58 include a housing 60 fixed to the upper surface of the floor cloth 25 provided in the vehicle body floor portion 22, and an engaging portion fixed to the lower surface of the lower rail 38. 62. A plunger 64 is supported by the housing 60 so as to be movable up and down, and the upper end portion of the plunger 64 is normally fitted in a recess 62 </ b> A formed in the engaging portion 62. Accordingly, the seat body 11 is restricted from rotating inward in the vehicle width direction around the rotation shaft 56, and the seat body 11 is normally restrained at the normal position shown in FIG.

  On the other hand, when a coil (not shown) provided in the housing 60 is energized, as shown in FIG. 4B, the plunger 64 is pulled to the housing 60 side (lower side), whereby the upper end portion of the plunger 64 is Comes out of the recess 62A. As a result, the rotation restriction of the seat body 11 is released.

(Configuration of control device)
As shown in FIG. 5, the vehicle seat device 10 includes a side collision ECU 66 as a control device that controls the operation of the inflator 48, the rotation drive actuator 52, and the rotation lock actuator 58. The side collision ECU 66 includes an inflator 48, a rotation drive actuator 52, a rotation lock actuator 58, a side collision sensor 68 that detects a side collision, and a pre-crash sensor (side collision prediction sensor) that predicts (predicts) a side collision. 70 is electrically connected. When the side collision ECU 66 detects a side collision (unavoidable) based on a signal from the side collision sensor 68, the side collision ECU 66 first activates the rotation lock actuator 58, and immediately thereafter activates the rotation drive actuator 52 and the inflator 48. It is configured to operate.

  The side collision ECU 66 may operate the rotation lock actuator 58 and the rotation drive actuator 52 based on a signal from the pre-crash sensor 70. Even in this case, the rotation lock actuator 58 is activated prior to the operation of the rotation drive actuator 52.

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

  In the automobile seat device 10 having the above-described configuration, the rotation of the seat body 11 around the rotation shaft 56 is normally restricted by a plurality of rotation lock actuators 58. On the other hand, when the side collision ECU 66 detects a side collision by a signal from the side collision sensor 68 (see step 200 in FIG. 6), the side collision ECU 66 operates the plurality of rotation lock actuators 58 in step 202. Then, the plunger 64 of each rotation lock actuator 58 is pulled to the housing 60 side (lower side), so that the upper end portion of the plunger 64 comes out of the recessed portion 62 </ b> A of the engaging portion 62. Thereby, the rotation restriction | limiting of the sheet | seat main body 11 is cancelled | released.

  Next, the side collision ECU 66 operates the rotation drive actuator 52 and the inflator 48 in step 204. Then, the seat body 11 is displaced inward in the vehicle width direction by the driving force of the rotation driving actuator 52, and the side airbag 46 is inflated and deployed between the seated occupant P and the side door 20. In this case, the rotation driving actuator 52 displaces the seat body 11 inward in the vehicle width direction by its own driving force regardless of the deformation of the vehicle body side portion 18 due to the side collision, so that the side door 20 and the like are in the vehicle width direction. The seat body 11 can be displaced inward in the vehicle width direction before entering the inside. Thereby, a sufficient space for deploying the side airbag 46 can be secured between the side door 20 and the seated occupant P.

  That is, in the present embodiment, the seat body 11 can be forcibly and immediately displaced inward in the vehicle width direction at the same time or substantially simultaneously with the detection of the side collision. A sufficient deployment space for the side airbag 46 can be secured. As a result, the load received by the seated occupant P from the side airbag 46 can be reduced.

  That is, if the side airbag 46 is inflated and deployed in a state where the deployment space of the side airbag 46 is not sufficiently ensured between the seated occupant P and the side door 20, the side airbag 46 and the seated occupant P from the beginning of the side collision. Will be in contact. In such a case, as indicated by a broken line in FIG. 7, the rising of the contact load received by the seated occupant P from the side airbag 46 is accelerated, and the time for the seated occupant P to receive the contact load from the side airbag 46 is increased. Become.

  On the other hand, in the present embodiment, the side airbag 46 is inflated and deployed in a sufficiently expanded deployment space, so that the contact load received by the seated occupant P from the side airbag 46 is indicated by a solid line in FIG. The rise can be delayed (see arrow t in FIG. 7). Thereby, the load which seated crew member P receives from side airbag 46 can be reduced.

  In addition, a part of the impact energy of the side collision is absorbed by the deformation of the vehicle body side part 18 until the contact load starts to rise. As a result, as shown by a solid line in FIG. 7, the maximum value of the contact load received by the seated occupant P from the side airbag 46 can be reduced, so that the load on the seated occupant P can also be reduced.

  Further, in the present embodiment, the seat body 11 is connected to the vehicle body floor 22 so that the outer end in the vehicle width direction at the front end of the seat cushion 12 is rotatable about the rotation axis 56 along the vertical direction. By the operation of the driving actuator 52, it is rotated inward in the vehicle width direction around the rotation shaft 56. Thereby, the rear side of the seat body 11, that is, the seat back 14 side on which the side airbag device 42 is mounted is displaced inward in the vehicle width direction. Moreover, since the seat body 11 is rotated around the front end portion of the seat cushion 12 and the outer end portion in the vehicle width direction, the rear side of the seat body 11 can be greatly displaced inward in the vehicle width direction even at a small rotation angle. Thereby, the deployment space of the side airbag 46 can be expanded effectively.

  Furthermore, in the present embodiment, the seat body 11 is rotated around the front end portion and the vehicle width direction outer end portion of the seat cushion 12 as described above, so that the thigh of the seated occupant P is used as the collision side door 20. The deployment space of the side airbag 46 can be effectively expanded on the side of the chest of the seated occupant P without approaching. That is, for example, when the seat body 11 is rotated about the center of the seat cushion 12 in a plan view and the rear side of the seat body 11 is displaced inward in the vehicle width direction, the thigh of the seated occupant P is Although it approaches the side door 20 on the collision side, this can be avoided in this embodiment.

  In the present embodiment, when the seat body 11 is rotated to the retracted position on the inner side in the vehicle width direction, the rotation angle of the seat body 11 is set so that the B pillar 30 and the seated occupant P do not wrap when viewed from the side of the vehicle. Is set. For this reason, the load from the B pillar 30 that is displaced (invaded) in the vehicle width direction due to the impact of the side collision is prevented or effectively suppressed from being applied to the seated occupant P via the side airbag 46. can do.

  Further, in the present embodiment, since the rotation lock actuator 58 that restricts the rotation of the seat main body 11 in the vehicle width direction is provided, the seat main body 11 is inadvertently rotated in the vehicle width direction at normal times. Can be reliably prevented.

  In the above-described embodiment, the drive device 50 includes the rotation drive actuator 52 and the rotation lock actuator 58 (lock mechanism). However, the present invention is not limited to this, and the rotation drive actuator itself If it is possible to prevent inadvertent rotation of the seat body during normal times, the lock mechanism may be omitted.

  In the above-described embodiment, the inflator 48 (side airbag device 42) and the rotational drive actuator 52 are configured to operate simultaneously. However, the present invention is not limited to this, and before the side airbag device is activated. Alternatively, the rotary drive actuator may be operated, and the operation timing of both may be appropriately changed according to the vehicle or the like.

  Next, another embodiment of the present invention will be described. In addition, about the structure and effect | action similar to the said 1st Embodiment, the same code | symbol as the said 1st Embodiment is provided, and the description is abbreviate | omitted.

[Second Embodiment]
FIG. 8 is a side view of an automotive seat device 80 according to the second embodiment of the present invention. The vehicle seat device 80 is different from the first embodiment in that the seat cushion frame 32 is connected to the vehicle body floor portion 22 via a rotating frame 82 instead of the slide rails 34L and 34R. In FIG. 8, the floor panel 24 is not shown.

  The rotating frame 82 includes an upper frame 84 and a lower frame 86. As shown in FIG. 9A, the upper frame 84 has an X-shape in plan view in which a pair of left and right front and rear extension portions 84L and 84R extending in the vehicle front-rear direction and the left and right front and rear extension portions 84L and 84R are connected. The connecting portion 84C. The left and right front and rear extending portions 84L and 84R are fixed to the lower end portion of the seat cushion frame 32 by bolts, nuts, and the like.

  As shown in FIG. 9B, the lower frame 86 is formed in the same shape as the upper frame 84. The left and right front / rear extension portions 86L and 86R and the left and right front / rear extension portions 86L and 86R are formed. It is comprised by the connection part 86C which connected. The lower frame 86 is disposed below the upper frame 84. The lower frame 86 is spanned between the upper ends of a pair of front and rear floor cloths 25 provided on the vehicle body floor 22 and is fixed to the front and rear floor cloths 25 by bolts and nuts.

  The front end of the front / rear extending portion 84L on the outer side in the vehicle width direction of the upper frame 84 and the front end portion of the front / rear extending portion 86L on the outer side in the vehicle width direction of the lower frame 86 are connected by a rotation shaft 88. The rotary shaft 88 is arranged with the axial direction along the vertical direction, and the upper frame 84 is rotatable around the rotary shaft 88 with respect to the lower frame 86. Thus, the seat body 11 is connected to the vehicle body floor portion 22 so as to be rotatable about an axis along the vertical direction around the front end portion of the seat cushion 12 and the outer end portion in the vehicle width direction, and the first embodiment. In the same manner as described above, rotation is possible between a normal position (see FIG. 2A) and a retracted position (see FIG. 2B).

  Further, as shown in FIGS. 9A, 9B, and 10, the rear end portion 84L of the upper frame 84 on the outer side in the vehicle width direction and the outer end in the vehicle width direction on the lower frame 86 A locking mechanism 90 is disposed between the rear end portion of the front and rear extending portion 86L. The lock mechanism 90 includes a lock pin 92 formed in a cylindrical shape. The lock pin 92 is arranged in a state where the axial direction is along the vertical direction, and the lower side is inserted into the spring accommodation hole 94 formed in the rear end portion of the front-rear extension portion 86L. A compression coil spring 96 is accommodated in the spring accommodation hole 94, and the lock pin 92 is urged upward by the compression coil spring 96. An engagement hole 98 is formed at the rear end portion of the front / rear extending portion 84L above the lock pin 92. The lock pin 92 is formed at the middle portion in the vertical direction while the upper side is fitted in the engagement hole 98. The flange portion 92A is in contact with the hole edge portion of the engagement hole 98. As described above, the lock pin 92 is stretched between the rear end portions of the front and rear extending portions 84L and 86L, so that the rotation of the upper frame 84 around the rotation axis 88 with respect to the lower frame 86 is restricted. The main body 11 is restrained at the normal position.

  The above-described engagement hole 98 penetrates the rear end portion of the front / rear extending portion 84 </ b> L in the vertical direction, and an extrusion valve (piston) 100 is provided in the middle portion of the engagement hole 98 in the vertical direction. A hose joint 102 is attached to the upper end portion of the engagement hole 98, and one end portion of the hose 104 is connected to the hose joint 102. The other end of the hose 104 is connected to a gas outlet of the inflator 48 as shown in FIG. Thereby, when the inflator 48 is operated, a part of the gas ejected from the gas ejection port of the inflator 48 flows through the hose 104 toward the extrusion valve 100, and the extrusion valve 100 is pushed down by the pressure of the gas. It is done. As a result, the lock pin 92 is pushed down by the push-out valve 100, and the upper side of the lock pin 92 comes out of the engagement hole 98. As a result, the rotation restriction of the upper frame 84 by the lock pin 92 is released, and the seat body 11 can be rotated from the normal position to the retracted position.

  On the other hand, as shown in FIGS. 11A to 11C, the rear end portion of the upper frame 84 on the inner side in the vehicle width direction on the front and rear extending portion 84 </ b> R and the lower frame 86 on the inner side in the vehicle width direction A hinge 106 (not shown in FIGS. 9A and 9B) constituting a stopper mechanism is provided between the rear end portion of the existing portion 86R. The hinge 106 includes an upper link 110 rotatably connected to a rear end portion of the front and rear extension portion 84R by a pin 108, and a lower side rotatably connected to a rear end portion of the front and rear extension portion 86R by a pin 112. The link 114 is configured to be rotatably connected to each other by a pin 116 on the opposite side of the pin 108 and the pin 112. The hinge 106 restricts the rotation range of the upper frame 84 relative to the lower frame 86, and the seat body 11 is configured not to be able to rotate inward in the vehicle width direction from the retracted position.

  Further, as shown in FIGS. 9A and 9B, one end portion of the wire 118 is connected to the rear end portion of the front and rear extending portion 84R of the upper frame 84 in the vehicle width direction. . The other end of the wire 118 is connected to an actuator 122 provided in the buckle pretensioner 120. The buckle pretensioner 120 is provided with a buckle provided in a seat belt device of another vehicle seat device (not shown) disposed on the side of the vehicle seat device 80 (opposite to the side door 20). In some cases, the actuator 122 is pulled downward by the driving force of the actuator 122. In the present embodiment, the actuator 122 is also used as a rotary drive actuator, and the wire 118 having the other end connected to the actuator 122 is pulled to the actuator 122 side together with the buckle by the operation of the actuator 122. Thereby, the driving force of the actuator 122 is transmitted to the rear end portion of the front / rear extension portion 84R via the wire 118, and the rear end portion of the front / rear extension portion 84R is pulled inward in the vehicle width direction. .

  Here, in the present embodiment, when the side collision ECU 66 detects a side collision by a signal from the side collision sensor 68, the side collision ECU 66 operates the inflator 48 of the side airbag device 42. As a result, the side airbag 46 starts to inflate and deploy due to the pressure of the gas ejected from the inflator 48, and the rotation restriction of the upper frame 84 by the lock pin 92 is released.

  Next, the side collision ECU 66 operates the actuator 122 of the buckle pretensioner 120. As a result, the rear end portion of the front / rear extending portion 84 </ b> R of the upper frame 84 is pulled toward the actuator 122 via the wire 118, whereby the upper frame 84, that is, the seat body 11 rotates inward in the vehicle width direction around the rotation axis 88. Is done. When the seat body 11 reaches the retracted position, the hinge 106 is stretched and stretched between the rear end portion of the front-rear extension portion 84R and the rear end portion of the front-rear extension portion 86R, so that the vehicle of the seat body 11 is Inward rotation in the width direction is restricted.

  In this case, since the actuator 122 displaces the seat body 11 inward in the vehicle width direction by its own driving force regardless of the deformation of the vehicle body side portion 18 due to a side collision, the side door 20 or the like enters the vehicle width direction inner side. The seat body 11 can be displaced inward in the vehicle width direction before coming. As a result, as in the first embodiment, a sufficient space for deploying the side airbag 46 can be secured, and the load received by the seated occupant P from the side airbag 46 can be reduced.

  In addition, in the present embodiment, the actuator 122 included in the buckle pretensioner 120 is also used as a rotary drive actuator, and the lock mechanism 90 is unlocked by the gas pressure of the inflator 48 included in the side airbag device 42. That is, since the drive device is configured by the actuator 122 and the inflator 48 already installed in the vehicle, a dedicated drive device for driving the seat body 11 can be omitted. Thereby, the structure of the vehicle seat device 80 can be simplified, and the cost can be reduced.

  In the second embodiment, the case in which the stopper mechanism is configured by the hinge 106 has been described. However, the present invention is not limited to this, and the configuration of the stopper mechanism can be changed as appropriate.

  Further, in each of the above embodiments, the seat body 11 is configured to rotate inward in the vehicle width direction around the rotation shafts 56 and 88 along the vehicle vertical direction. However, the present invention is not limited to this, and the seat body is a vehicle. You may make it the structure slid to the width direction inner side.

  In addition, the present invention can be implemented with various modifications without departing from the scope of the invention. It goes without saying that the scope of rights of the present invention is not limited to the above embodiments.

DESCRIPTION OF SYMBOLS 10 Car seat apparatus 11 Seat body 12 Seat cushion 14 Seat back 18 Car body side part 22 Car body floor part 42 Side airbag apparatus 46 Side airbag 50 Drive apparatus 52 Rotation drive actuator 56 Rotating shaft 58 Rotation lock actuator (lock mechanism) )
66 Side collision ECU (control device)
80 Automotive seat device 88 Rotating shaft 90 Lock mechanism

Claims (3)

A seat body connected to the vehicle body floor portion so as to be displaceable inward in the vehicle width direction;
A side airbag device that is disposed and actuated on a laterally outer side portion of the seat back of the seat body to inflate and deploy the side airbag between the seated occupant and the vehicle body side portion;
A drive device that restricts the seat body from being displaced inward in the vehicle width direction, and when actuated, displaces the seat body inward in the vehicle width direction by a driving force;
A control device for operating the driving device and the side airbag device when a side collision of the vehicle is detected or predicted;
An automobile seat device comprising:   The seat body is connected to the vehicle body floor so that the outer side in the vehicle width direction on the front end side of the seat cushion is rotatable about a rotation axis along the vehicle vertical direction, and the vehicle is driven around the rotation axis by the operation of the driving device. The automobile seat device according to claim 1, which is rotated inward in the width direction.   The drive device includes a lock mechanism that restricts rotation of the seat body inward in the vehicle width direction, and a rotation drive actuator that rotates the seat body inward in the vehicle width direction. The automobile seat device according to claim 2, wherein the rotation restriction by the lock mechanism is released before the rotation driving actuator is operated.

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