A chair seat capable of adjusting a width contains a base, an adjustment assembly, a first sitting portion, a second sitting portion, an adjustable clamp portion, a first guide member, a second guide member, a central shaft, and a screw bolt. The base includes a threaded orifice, multiple locking orifices, a support portion, and a groove. The adjustment assembly includes a first wing and a second wing. The first sitting portion includes a first tilted supporting face. The second sitting portion includes a second tilted supporting face. The adjustable clamp portion includes a guiding orifice. The first guide member includes a first oblique press face and a first connection orifice. The second guide member includes a second oblique press face and a second connection orifice. The central shaft includes an abutting face, multiple fixing orifices, and multiple screws inserting. The screw bolt includes a rotary knob and a non-threaded section.

A motion seat is described that includes a chassis, a seat frame, a seat cushion, a backrest, and a resilient hinge. The seat frame is attached to the chassis and the seat cushion and the backrest are each attached to the seat frame. The resilient hinge formed as a unitary body and may be formed from a resilient polymer. The seat cushion and/or the backrest is pivotably attached to the seat frame with the resilient hinge

A functional sitting chair according to an embodiment of the present disclosure effectively distributes the user's body pressure even when the user sits for a long time, stably supports the user's waist and back, provides a heating function, and maintains great comfort by effectively circulating air through a pattern formed on the cushion.

A first aspect of the present disclosure provides a chair. This chair is provided with a seat portion in which a deformation mode of at least a portion of a seating surface of the seat portion is isolated in such that a target curved surface including a double-curved surface of a prescribed type, relative to a prescribed position, is formed irrespective of the position of the buttocks of a user when the user is seated.

A seat pad includes a supporting device, a shaping positioning portion, and an elastic member. The supporting device has a receiving space. The shaping positioning portion is at the outer periphery of the receiving space. The elastic member is arranged in the receiving space of the supporting device. The elastic member includes a contact surface in the shaping positioning portion, and the contact surface can be seated by a buttock of a user to hold the buttock of the user.

A seat pad includes a supporting device, a shaping positioning portion, and an elastic member. The supporting device has a receiving space. The shaping positioning portion is at the outer periphery of the receiving space. The elastic member is arranged in the receiving space of the supporting device. The elastic member includes a contact surface in the shaping positioning portion, and the contact surface can be seated by a buttock of a user to hold the buttock of the user.

In a configuration in which a holder holding a controller is mounted on a seat part with a plate-shaped member, the exposure of the mounting part of the plate-shaped member on which the holder is mounted is eliminated. A seat device includes a pressure sensor measuring a value relating to the seated person's state, a vibration imparting device a vibration imparting operation, an ECU controlling the vibration imparting device corresponding to the measurement result of the pressure sensor, a holder holding the ECU, and a mounting bracket fixed to a lower frame such that the holder is mounted on the lower frame of a seat part. The mounting bracket includes a mounting projection on which a side wall of the holder is mounted in a predetermined mounting direction. When the side wall is mounted on the mounting projection, the mounting projection is covered with the side wall.

In a configuration in which a holder holding a controller is mounted on a seat part with a plate-shaped member, the exposure of the mounting part of the plate-shaped member on which the holder is mounted is eliminated. A seat device includes a pressure sensor measuring a value relating to the seated person's state, a vibration imparting device a vibration imparting operation, an ECU controlling the vibration imparting device corresponding to the measurement result of the pressure sensor, a holder holding the ECU, and a mounting bracket fixed to a lower frame such that the holder is mounted on the lower frame of a seat part. The mounting bracket includes a mounting projection on which a side wall of the holder is mounted in a predetermined mounting direction. When the side wall is mounted on the mounting projection, the mounting projection is covered with the side wall.

An electrically controlled chassis includes: a chassis body; an electrical control box, internally provided with an accommodation space; a drive motor, configured to control lift adjustment of the chassis of the chair and pitch adjustment of a backrest of the chair; a winding mechanism, connected to an output shaft of the drive motor; a first pull cord, reversely wound on the winding mechanism; a second pull cord, normally wound on the winding mechanism; a backrest adjustment mechanism, disposed on the chassis body, and fixedly connected to the other end of the first pull cord; and a chassis lift mechanism, disposed on the chassis body, and fixedly connected to the other end of the second pull cord.

The present technology relates to a seat for a moving device, a seat control device, and a seat control method capable of improving comfort of a seat with a simple configuration. A seat for a moving device includes a left adjustment portion configured to adjust hardness of a left gluteal contact portion including a portion assumed to be in contact with a left gluteal portion of a user on a seat surface and a right adjustment portion configured to adjust hardness of a right gluteal contact portion including a portion assumed to be in contact with a right gluteal portion of the user on the seat surface. The present technology can be applied to, for example, a system that controls automatic driving.