Abstract: Provided is a seatback structure for a seatback provided with a lower seatback support and an upper seatback support pivotably connected to the upper end of the lower seatback support. An actuator (17) is fixedly secured to one of a pair lower side frames (6) of a seatback frame (F), and an output end (17a) of the actuator is configured to move linearly along a length of the lower side frame, and a link (25) is provided with an upper end pivotally connected to a part of a corresponding upper side frame (7) and a lower end pivotally connected to the output end of the actuator. The upper end portion of the lower side frame and the lower end portion of the corresponding upper side frame comprise plate members facing laterally each other in an overlying relationship, and at least partly interposing the link therebetween.

Abstract: Provided is a belt assist device having a compact configuration and being configured to move a seatbelt to an easily reachable position. A vehicle seat includes a belt assist device attached to a lateral portion of a seat back and configured to move a portion of a seatbelt placed on the lateral portion to the easily reachable position. The belt assist device includes a rotary member attached to a recessed housing portion of the lateral portion via a rotary shaft and configured to rotate up and down between a housing position at which the rotary member is housed in the seat back and a protruding position at which the rotary member rotates to protrude forward of the seat back to push out a portion of the seatbelt. The rotary member is disposed forward of a belt guide provided at the periphery of an upper end of the seat back.

Abstract: A seat with an alertness-maintaining device that can efficiently secure a drive source (for example, a motor) when the drive source is internally housed and a vibratory stimulus is imparted to the occupant. The present disclosure relates to a seat with an alertness-maintaining device, the seat being provided with an alertness-maintaining device for imparting physical force to the occupant to promote alertness. A load-supporting portion for supporting the load on the back of the occupant is installed, and a device drive unit for imparting physical force to the occupant, the device drive unit that forms the alertness-maintaining device, is attached to the load-supporting portion. The device drive unit is provided with a drive source and a support member. The support member is attached to the load-supporting portion while grasping a part of the load-supporting portion by a drive source attachment surface portion and a load-supporting portion-clamping piece.

Abstract: Provided is a belt assist device having a compact configuration and being configured to move a seatbelt to an easily reachable position. A vehicle seat includes a belt assist device attached to a lateral portion of a seat back and configured to move a portion of a seatbelt placed on the lateral portion to the easily reachable position. The belt assist device includes a rotary member attached to a recessed housing portion of the lateral portion via a rotary shaft and configured to rotate up and down between a housing position at which the rotary member is housed in the seat back and a protruding position at which the rotary member rotates to protrude forward of the seat back to push out a portion of the seatbelt. The rotary member is disposed forward of a belt guide provided at the periphery of an upper end of the seat back.

Abstract: Provided is a seatback structure for a seatback provided with a lower seatback support and an upper seatback support pivotably connected to the upper end of the lower seatback support. An actuator (17) is fixedly secured to one of a pair lower side frames (6) of a seatback frame (F), and an output end (17a) of the actuator is configured to move linearly along a length of the lower side frame, and a link (25) is provided with an upper end pivotally connected to a part of a corresponding upper side frame (7) and a lower end pivotally connected to the output end of the actuator. The upper end portion of the lower side frame and the lower end portion of the corresponding upper side frame comprise plate members facing laterally each other in an overlying relationship, and at least partly interposing the link therebetween.

Abstract: A vehicle seat is provided with a side support device configured to assist vehicle exit behavior of an occupant while stably securing a holding property for the sitting occupant. The vehicle seat includes a side support device configured to support a cushion side portion of a seat cushion to be switchable between a seating available position and a vehicle exit assist position, a lock device configured to lock the cushion side portion in the seating available position, and a lock release device configured to release a lock state of the lock device. The lock release device includes a first lever configured to detect sitting of the occupant on a cushion center portion and a second lever configured to detect sitting of the occupant on the cushion side portion. The lock state is released when the detection by the second lever occurs while the detection by the first lever continues.

Abstract: Provided is a belt assist device having a compact configuration and being configured to move a seatbelt to an easily reachable position. A vehicle seat includes a belt assist device attached to a lateral portion of a seat back and configured to move a portion of a seatbelt placed on the lateral portion to the easily reachable position. The belt assist device includes a rotary member attached to a recessed housing portion of the lateral portion via a rotary shaft and configured to rotate up and down between a housing position at which the rotary member is housed in the seat back and a protruding position at which the rotary member rotates to protrude forward of the seat back to push out a portion of the seatbelt. The rotary member is disposed forward of a belt guide provided at the periphery of an upper end of the seat back.

Abstract: A seat with an alertness-maintaining device that can efficiently secure a drive source (for example, a motor) when the drive source is internally housed and a vibratory stimulus is imparted to the occupant. The present disclosure relates to a seat with an alertness-maintaining device, the seat being provided with an alertness-maintaining device for imparting physical force to the occupant to promote alertness. A load-supporting portion for supporting the load on the back of the occupant is installed, and a device drive unit for imparting physical force to the occupant, the device drive unit that forms the alertness-maintaining device, is attached to the load-supporting portion. The device drive unit is provided with a drive source and a support member. The support member is attached to the load-supporting portion while grasping a part of the load-supporting portion by a drive source attachment surface portion and a load-supporting portion-clamping piece.

Abstract: Vehicle seat devices are provided with: a backrest; side supports that are disposed on both sides of the backrest, and that have protruding sections that protrude further forward than the backrest; a mechanism for adjusting the degree of restraint that changes the width of the protruding sections; a frame disposed inside the side supports; and a movable member that is disposed on the frame, and that displaceably holds the ends of a side surface leather material of the side supports in relation to the frame.

Abstract: A vehicle seat includes a seat cushion S1 and a seat back S2. The seat back S2 includes a seat back frame F2 constituting a framework thereof, a pressure-receiving member 30 located in the seat back frame F2 and configured to support an upper body of an occupant, elastically supporting members 26, 27 elastically supporting the pressure-receiving member 30 in the seat back frame F2, and a cover material covering the seat back frame F2 and the pressure-receiving member 30. The seat back is configured such that when a backward movement load is applied from the upper body of the occupant seated on the seat cushion S1 to the seat back S2, the pressure-receiving member 30 moves backward to allow the upper body of the occupant to sink into the seat back S2. A vibrating unit 50 is attached to the pressure-receiving member 30.

Abstract: An armrest attachable to a seat back includes: an arm frame; and a clutch through which the arm frame is rotatably supported by the seat back. The clutch includes: an inner member (inner race) configured to be fixed to one of the arm frame and the seat back; an outer race provided radially outward of the inner member and spaced apart from the inner member, and configured to be fixed to the other one of the arm frame and the seat back; an unlocking member provided coaxially with the inner member and the outer race and configured to be rotatable relative to both of the inner member and the outer race; and an unlocking manipulation mechanism configured to actuate the unlocking member to unlock a locked state.

Abstract: Vehicle seat devices are provided with: a backrest; side supports that are disposed on both sides of the backrest, and that have protruding sections that protrude further forward than the backrest; a mechanism for adjusting the degree of restraint that changes the width of the protruding sections; a frame disposed inside the side supports; and a movable member that is disposed on the frame, and that displaceably holds the ends of a side surface leather material of the side supports in relation to the frame.