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.

A seat support with adjustment systems allowing a height and swivel adjustment functionality of the seat in a manner free of any wobble and shaking motion. The seat mechanism for height and swivel adjustments have screw adjustment applying a pre-load on a resilient component which gives a resilient force on a load bearing surface. The load bearing surface guides the seat part in motion during seat adjustment in a way to reduce friction and wear with use in time. The screw adjustment and the resilient component are configured such that play in guiding of the seat part in motion during seat adjustment is eliminated regardless of fabrication and component variations, and wear, with use in time. A screw adjustment locking device is configured to assure a stable adjustment with use in time.

A variable height support with a platform and a base supporting the platform and reconfigurable to selectively change a height of a support surface on the platform relative to a subjacent surface. A control assembly is operable to selectively: a) maintain the support surface at a selected height; and b) release the platform to allow the base to be reconfigured to change the height of the support surface. The control assembly has a ratchet subassembly that, with the control assembly in a first state, allows the base to be reconfigured by exerting a continuous upward force upon the platform that causes the platform to elevate and be blocked within a range at a plurality of different vertical locations against downward movement. The control assembly further has an actuator that is repositionable to change the control assembly into a second state wherein the platform can be lowered over the range.

Various implementations include a seat riser system. The system includes a base and a seat. The base has a base center line, a first base end, a second base end spaced apart along the base center line, a first base side, and a second base side spaced apart from the first base side. The seat has a seat center line, a first seat end, a second seat end spaced apart along the seat center line, a first seat side, a second seat side spaced apart from the first seat side, and a bottom seat surface rotationally coupled to the base such that the seat is rotatable about a seat rotational axis. The seat rotational axis is spaced apart from the seat center line such that the seat rotational axis is closer to the first seat side than it is to the second seat side.

The invention relates to a commercial vehicle seat having a seat substructure supporting part and a seat substructure base part each attached underneath a seat part, the seat substructure supporting part being movable and/or height-adjustable relative to the seat substructure base part, where the seat substructure supporting part comprises an upper supporting part joined to the underside of the seat part and a lower supporting part joined to the base part, wherein at least one roller bearing with a roller bearing ring, which extends orbitally about a notional rotary axis running in the vertical direction of said vehicle seat, is arranged between the upper supporting part and the lower supporting part, in order to rotatably support said upper supporting part relative to said lower supporting part.

A pumping device for a vehicle seat includes a cover configured to be coupled to one surface of a housing, a brake drum assembled in the housing and having a coupling protrusion provided at a center of one surface of the brake drum that is directed toward the cover, a locking plate positioned between the brake drum and the cover and having a through-hole configured to be coupled to the coupling protrusion, the locking plate being configured to implement a locking state in which the through-hole is coupled to the coupling protrusion, or the locking plate being configured to implement an unlocking state in which the through-hole is separated from the coupling protrusion.

A pumping device for a vehicle seat includes a cover configured to be coupled to one surface of a housing, a brake drum assembled in the housing and having a coupling protrusion provided at a center of one surface of the brake drum that is directed toward the cover, a locking plate positioned between the brake drum and the cover and having a through-hole configured to be coupled to the coupling protrusion, the locking plate being configured to implement a locking state in which the through-hole is coupled to the coupling protrusion, or the locking plate being configured to implement an unlocking state in which the through-hole is separated from the coupling protrusion.