A lifter device includes: an output shaft; a support member supporting the output shaft; an input member coupled to an operation handle; a feed portion transmitting forward and reverse rotation of the input member to the output shaft; a lock portion locking the rotation of the output shaft; and a friction generating portion applying a frictional force to the rotation of the output shaft. A rotating cam of the friction generating portion is a switching structure of switching to: a friction-suppression state when the operation handle is in a neutral position and when the operation handle is turned from the neutral position in a direction of raising the seat; and a friction-on state when the operation handle is turned from the neutral position in a direction of lowering the seat. In the friction-on state, a rotating member is pressed against a fixed member and friction is generated.

A swivel device for vehicle seats may rotate a seat mounted inside a vehicle at 180° or more and firmly fix the seat at a normal position before and after rotation. The swivel device includes: a base plate provided with a plurality of first locking members; a swivel plate disposed on the base plate to be rotated by a second motor; a rotary force transmission mechanism mounted on an output shaft of the second motor and the swivel plate to transmit a rotary force of the second motor to the swivel plate; an elevating plate provided with a plurality of second locking members separably coupled to the plurality of first locking members and formed on a lower surface of the elevating plate; and a first motor mounted on an upper surface of the elevating plate to transmit a rotary force to the lead screw.

A lifter device includes a pinion gear and a rotation control device that is configured to control rotation of the pinion gear. The rotation control device includes a rotation shaft, a support member, a rotation driving mechanism, and a lock mechanism. The rotation drive mechanism includes a feed gear, and a plurality of feed pawls. The lock mechanism is configured to release locking of the rotation shaft until any one of the feed pawls meshes with the feed gear when an operation handle is operated. A plurality of the feed pawls are provided with respect to either operation direction on a seat lifting side or lowering side of the operation handle, and one of the feed pawls meshes with the feed gear when at least one of the others of the feed pawls does not mesh with the gear.

Provided is a boarding/deboarding controller that enables reduce time and effort for boarding and deboarding a vehicle of which canopy is opened or closed to allow a user boards or deboards. One aspect of the present disclosure provides a boarding/deboarding controller for a vehicle including a seat, an occupant compartment provided with the seat, and a canopy that moves to a closed position where the canopy covers the occupant compartment and to an opened position, which is situated upper than the closed position. The boarding/deboarding controller is configured to change a posture or position of the seat concurrently while the canopy is moved from the closed position to the opened position in an opened movement, or, from the opened position to the closed position in a closed movement.

Pawls in a lifter device, having: outer teeth that are rotatably supported by shafts for in lock plates and are meshed with inner teeth of a base; and pins that are provided in an intermediate section in the radial direction, between the shaft center of the shafts and the teeth tips of the inner teeth, and are pressed in the rotation direction by a rotation transmittance plate during a release operation. The pins have a protruding shape that protrudes from the pawls in the thrust direction.

A vehicle seat is provided. The vehicle seat comprises construction elements that are movable relative to one another and at least one force transmission element which transmits activation forces and/or stress forces that result from the use of the vehicle seat from one construction element to the other. The force transmission element by way of at least one joint is connected to both construction elements, and conjointly with the at least one joint is an integral component part of at least one of the two construction elements.

A suspension seat, including: a lower side member that forms a vehicle lower side of a suspension; an upper side member that forms a vehicle upper side of the suspension, and that is configured to support a vehicle seat body from the vehicle lower side; a suspension link mechanism that includes a vehicle lower side portion coupled to the lower side member and a vehicle upper side portion coupled to the upper side member, and that undergoes displacement so as to displace the upper side member along a vehicle vertical direction; a linear displacement section that is provided at the suspension link mechanism and is configured to undergo linear displacement in conjunction with displacement of the suspension link mechanism; and a locking mechanism that immobilizes the linear displacement section so as to immobilize displacement of the suspension link mechanism.

A clutch unit that is used for a vehicle seat includes: a housing, which accommodates at least one of a input-side clutch and a output-side clutch, a first engaging portion, which is rotatable integrally with an output shaft member, and a lock member, which is able to be shifted between a locked state, in which the rotation of the output shaft member relative to the housing is suppressed by the lock member being locked to the first engaging portion, and an unlocked state, in which the rotation of the output shaft member relative to the housing is allowed by releasing the engaging with the first engaging portion, wherein when the lock member is shifted from the locked state to the unlocked state, the lock member is elastically deformed to release the engagement of the lock member and the first engaging portion.

A pumping device for a seat of a vehicle is proposed. In the pumping device, a spring providing a restoring force to a lever bracket is directly connected to a housing without a separate component, so that the manufacturing cost is reduced and a layout size is reduced in response to removal of the component supporting the spring.

A lifter device includes: a pinion gear; a rotation control device including: a rotation shaft rotating in synchronization with the pinion gear; a support member supporting the rotation shaft; a rotation drive mechanism configured to rotate the rotation shaft; and a lock mechanism configured to lock rotation of the rotation shaft when an operation handle is in an operation-released state and including: a first tooth; and a second tooth configured to selectively mesh with the first tooth to lock relative rotation of the rotation shaft and the support member; and a speed increasing mechanism provided closer to the rotation shaft than a meshing portion of the first tooth and the second tooth in a rotation transmission path, configured to transmit the rotation of the rotation shaft to one of the first tooth and the second tooth, and configured to speed up the transmitted rotation of the rotation shaft.