A clutch unit includes a lever-side clutch part to control transmission and interruption of rotational torque input through a lever operation and a brake-side clutch part to transmit the rotational torque from the lever-side clutch part to the output side and interrupt rotational torque reversely input from the output side. The brake-side clutch part includes an outer ring constrained in rotation, an output shaft to output the rotation, cylindrical rollers to control interruption of the rotational torque reversely input from the output shaft and transmission of the rotational torque input from the lever-side clutch part through engagement and disengagement between the outer ring and the output shaft, a friction ring to apply a rotational resistance to the output shaft, and a variable part to change the rotational resistance applied to the output shaft between the transmission and the interruption of the rotational torque.

A compliant pivot joint is provided for rotationally coupling a link member to a frame member in a vehicle seat. The compliant pivot joint includes a cup-shaped protrusion having a cup opening formed on the link member, a shoulder bolt having a first shaft portion projecting from a bolt head and terminating at a shoulder, a bias member having a bias opening, and a fastener fixedly coupled to the frame member. The shoulder bolt is fixedly coupled to the fastener and extends through the bias opening and through the cup opening. The bias member is spaced between the cup-shaped protrusion and the bolt head and biases the bolt head away from the cup-shaped protrusion. A curved shoulder surface of the fastener is frictionally engaged with the cup-shaped protrusion and the shoulder of the shoulder bolt is frictionally engaged with an end surface of the fastener.

The invention relates to a vehicle seat structure (1). The vehicle seat structure (1) comprises a seat frame part (5) with a longitudinal section (6) and a backrest section (7). The seat frame part (5) can be pivoted about a pivot axis of a pivot bearing (11) for adjusting the inclination of the vehicle seat. A seat cushion frame part (20) is supported on the seat frame part (5). In one end region, the seat cushion frame part (20) is guided for being displaced on the backrest section (7) of the seat frame part (5) by a guiding device (21). In the other end region, the seat cushion frame part (20) is linked to the longitudinal section (6) of the seat frame part (5) by a coupling pivoting bar (19). By means of a displacement of the seat cushion frame part (20) relative to the backrest section (7) of the seat frame part (5), a height adjustment can be brought about.

A seat adjustment apparatus for mobility includes a seat cushion, wherein, during seat cushion tilting, the front portion of the seat cushion is moved upwards, and the rear portion thereof is moved downwards so that the occupant's lower body is not moved upwards as a whole, and the occupant's feet are not excessively lifted. Accordingly, there is no need for a separate footrest for supporting the occupant's feet, and seating convenience is improved by implementing a stable occupant posture. Furthermore, a tilting bar provided for seat cushion tilting supports a seat frame so that the posture of the occupant's lower body does not collapse due to deformation of the seat cushion during a collision, securing the occupant's stability.

A sliding bearing in which generation of looseness is avoided in a frame and friction resistance between the frame multi-layer sliding bearing and a frame rotation shaft is decreased to reduce a power load at the time of adjusting a relative position and a posture by a motor or a manual operation, includes: a bearing inner peripheral surface formed by a resin layer that has a projected and recessed shape including projected contact portions to be brought into contact with a frame rotation shaft, and recessed non-contact portions to be not brought into contact with the frame rotation shaft but to form clearances.

A vehicle seat including: a connection mechanism; a seat cushion connected to an interior structure of a vehicle via the connection mechanism and configured to be displaced between a first state and a second state at which the seat cushion is arranged at a position closer to a front part-side of the vehicle than at the first state; and a seat back, wherein a sitting surface of the seat cushion at the first state gradually inclines upwardly from the rear of the seat towards the front of the seat, and wherein the connection mechanism is configured to displace the seat cushion to the second state and move a front part-side of the seat cushion more downwardly than at the first state, whereby the sitting surface of the seat cushion is made more horizontal at the second state than at the first state.

A vehicle seat frame includes a pair of side frames, a pair of cylindrical collar members, a pair of link members, and a pipe member coaxially secured at end portions to the collar members. At least one of the collar members is substantially equal in outer diameter to the pipe member. A contact surface portion having a reduced outer diameter is formed in an end portion of a first member, which is brought into contact with a second member. The first member is one of the pipe member and the collar member that is substantially equal in outer diameter to the pipe member, and the second member is the other one of them. The first member and the second member are secured to each other by welding, with the contact surface portion kept in contact with an inner peripheral portion of the second member.

Vehicle seat (1), with a seat part (2) and a backrest (3), which comprises a lumbar support (7), wherein the lumbar support (7) has a lumbar apex (7.1) towards the back of a seat occupant and tapers from there and that the lumbar support comprises a suspension 9, 11, 12) that results in load distribution with a primery load uptake (8. 1) at the lumbar apex (7.1).

A vehicle seat includes a seat frame, a bushing having a shape of a hollow cylinder and a pipe. The pipe is fitted to the bushing and attached to the seat frame. The pipe includes a body portion having a fitting diameter different from a fitting diameter of the bushing and a fitting portion formed at an end in an axial direction of the body portion and fitted to an inner periphery or an outer periphery of the bushing. The fitting portion is formed in a diameter-reduced or diameter-increased hollow cylindrical shape that is fitted to the inner periphery or the outer periphery of the bushing.

Longitudinal, adjuster (27) having an outer and an Inner rail (50, 51), characterized in that the outer rail (50) has a structural element (53) which absorbs vertical forces and has a flexible element which biases a rolling body (52) against the inner rail (51).