Vehicle seat

Patent metadata

Field	Value
Publication number	US-9238425-B2
Application number	US-201214354907-A
Country	US
Kind code	B2
Filing date	Dec 25, 2012
Priority date	Dec 28, 2011
Publication date	Jan 19, 2016
Grant date	Jan 19, 2016

Abstract

A vehicle seat that can effectively restrain a passenger from moving outward in a vehicle width direction in the event of a collision of a vehicle is obtained. The vehicle seat disclosed is equipped with a pop-up bar that is supported displaceably upward, an MGG that is operated to displace the pop-up bar upward, a tension cloth that is connected on an upper end side thereof to the pop-up bar and on a lower end side thereof to a front end side of a seat cushion, and a lateral collision ECU that operates the MGG in a case where a lateral collision of the vehicle is detected or predicted. The tension cloth is deployed such that a tensile force is applied between a connection portion thereof to the pop-up bar and a connection portion thereof to the seat cushion as the pop-up bar is displaced to a popped-up position.

First claim

The invention claimed is:

1. A vehicle seat comprising:
a movable support body that displaces upwardly to a popped-up position with respect to a seat back, the popped-up position being a position such that the movable support body is spaced apart from the seat back;
an actuator that is configured to shift the movable support body upward with respect to the seat back;
a lateral deployment member that is: (1) connected to the movable support body at an upper end side of the lateral deployment member and connected to a front end side of a seat cushion at a lower end side of the lateral deployment member, (2) accommodated from a lateral portion of the seat cushion to a lateral portion of the seat back, and (3) deployed such that a tensile force is applied between a first connection portion of the lateral deployment member to the movable support body and a second connection portion of the lateral deployment member to the seat cushion when the movable support body is displaced upwardly with respect to the seat back; and
a control device that operates the actuator in a case where a collision of the vehicle is detected or predicted.

2. The vehicle seat according to claim 1 , wherein
the lateral deployment member a is planar cloth material or a mesh material that is connected at a vehicle rear end side of the lateral deployment member to a frame of the seat back.

3. The vehicle seat according to claim 2 , further comprising
a side airbag device that includes a side airbag that is accommodated in the seat back and is expanded and deployed between the lateral deployment member and at least a breast and a shoulder of a seated passenger in a case where the collision of the vehicle is detected or predicted.

4. The vehicle seat according to claim 3 , wherein
the side airbag has a head protection chamber that restrains a head of the seated passenger.

5. The vehicle seat according to claim 4 , wherein
the head protection chamber is connected to the movable support body in a state of being accommodated in the seat back.

6. The vehicle seat according to claim 5 , wherein
the side airbag has a lower portion that is connected to the frame of the seat back, and an upper portion that includes that region of the head protection chamber which is connected to the movable support body, the lower portion and the upper portion being folded in a longitudinal direction with regard to the vehicle, and a region between the upper portion and the lower portion being folded in a vertical direction with regard to the vehicle, and
that region of the side airbag which is folded in the vertical direction with regard to the vehicle is provided with a ring-shaped member through which at least one of the frame and the movable support body is inserted and which prevents the frame and the movable support body from being displaced relatively to each other in the longitudinal direction while allowing the frame and the movable support body to be displaced relatively to each other in the vertical direction.

7. The vehicle seat according to claim 4 , wherein
the lateral deployment member has an overhang portion that overhangs forward with regard to the vehicle from a line that links the first connection portion to the movable support body and the second connection portion to the seat cushion with each other, in a deployed state, and
that region of the head protection chamber which is located on a front end side in an expanded and deployed state is connected to the overhang portion.

8. The vehicle seat according to claim 7 , wherein
that region of the head protection chamber which is located on the front end side in the expanded and deployed state and the overhang portion are connected to each other in such a manner as to be separated from each other upon completion of expansion and deployment of the head protection chamber.

9. The vehicle seat according to claim 8 , wherein
that region of the head protection chamber which is located on the front end side in the expanded and deployed state and the overhang portion are connected to each other by a tear seam.

10. The vehicle seat according to claim 4 , wherein
lateral deployment members and side airbags are provided on both sides in a vehicle width direction respectively,
the side airbag that is arranged on an outer side in the vehicle width direction has a lumbar protection chamber that restrains a lumbar of the seated passenger, and
the side airbag that is arranged on an inner side in the vehicle width direction has an abdomen protection chamber that restrains an abdomen of the seated passenger.

11. The vehicle seat according to claim 10 , wherein
at least one of the lumbar protection chamber and the abdomen protection chamber is connected to a lower portion of the lateral deployment member that is arranged on a same side as at least one of the lumbar protection chamber and the abdomen protection chamber in the vehicle width direction, in a vertical direction with regard to the vehicle.

12. The vehicle seat according to claim 3 , further comprising
a restraint device that is operated to restrain the seated passenger in such a manner as to restrain the seated passenger from moving forward with regard to the vehicle, and
a control unit that operates the restraint device, the actuator on a collision side, and the side airbag device on the collision side, in a sequence of the restraint device, the actuator on the collision side, and the side airbag device on the collision side, in a case where a minute lap collision of the vehicle is detected.

13. The vehicle seat according to claim 3 , further comprising
a restraint device that is operated to restrain the seated passenger in such a manner as to restrain the seated passenger from moving forward with regard to the vehicle, and
a control unit that operates the restraint device, the actuator on a collision side, and the side airbag device on the collision side, in a sequence of the actuator on the collision side, the side airbag device on the collision side, and the restraint device in a case where an oblique collision of the vehicle is detected.

14. The vehicle seat according to claim 12 , wherein
the restraint device is configured to include
a movable body that can assume a stored position at which the movable body is stored along a lateral edge portion of the seat cushion or the seat back, and an in-use position at which the movable body is arranged along a vehicle width direction while being spaced apart from an abdomen of the seated passenger forward with regard to the vehicle,
a frontal collision airbag device that is provided on the movable body and deploys a frontal collision airbag between an upper body of the seated passenger and a vehicle structure located in front of the seated passenger upon being supplied with gas,
a lap belt that is retained by the movable body, and is removed from the movable body toward a lumbar side of the seated passenger in an event of reception of a tensile force equal to or larger than a predetermined value, and
a pretensioner that pulls the lap belt in while applying the tensile force equal to or larger than the predetermined value to the lap belt, and
the control unit operates the pretensioner and the frontal collision airbag device in a sequence of the pretensioner and the frontal collision airbag device, in a state where the movable body is located at the in-use position, in operating the restraint device.

15. The vehicle seat according to claim 3 , further comprising
a movable body that can assume a stored position at which the movable body is stored along a lateral edge portion of the seat

Assignees

• Toyota Motor Co Ltd

Inventors

• Fukawatase Osamu

Classifications

• B60R21/231

  characterised by their shape, construction or spatial configuration · CPC title

• B60R21/13

  Roll-over protection (electrical circuits for triggering safety arrangements B60R21/01) · CPC title

• B60N2/427 Primary

  Seats or parts thereof displaced during a crash · CPC title

• B60R2021/135

  automatically during an accident · CPC title

• B60N2/4235

  transversal · CPC title