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.

Vehicle seat comprising a vehicle seat upper part and a vehicle seat lower part, the vehicle seat upper part being movable relative to the vehicle seat lower part, and the vehicle seat upper part being able to be sprung and damped, relative to the vehicle seat lower part, by a suspension and damping element, the suspension and damping element comprising a reversibly deformable plastics element and an adjusting element, the plastics element and the adjusting element being in operative contact, and the spring characteristics of the suspension and damping element being able to be adjusted depending on the position of the adjusting element relative to the plastics element.

Suspension device for a vehicle seat, comprising an upper suspension portion and a lower suspension portion, which are interconnected by a first swivel connector and a second swivel connector, and the first and the second swivel connector are pivoted in each case about a swivel pin in the case of an oscillating movement of the upper suspension portion relative to the lower suspension portion, wherein a first toothed wheel element which is rotatable about a first axis of rotation is arranged on the first swivel connector for adjusting a position of a first spring unit, by means of which a spring force and a spring rate of the suspension device can be changed, the first toothed wheel element being in operative contact with a second toothed wheel element which is rotatable about a second axis of rotation.

Vehicle seat comprising a vehicle seat top part, a vehicle seat bottom part and a guide device for guiding the vehicle seat top part with respect to the vehicle seat bottom part when the vehicle seat top part is deflected relative to the vehicle seat bottom part. The guide device includes a first assembly having a first lever element, a second lever element and a lever element connector. The first lever element and the second lever element are arranged so as to extend forwards in a longitudinal direction. The guide device also includes a second assembly having a third lever element, a fourth lever element and the lever element connector. The third lever element and the fourth lever element are arranged so as to extend backwards in a longitudinal direction. The guide device further includes a stabilization device having a fifth lever element, a sixth lever element and a seventh lever element, which are pivotally connected by means of a shared pivot axis. The fifth lever element is pivotally connected to the vehicle seat top part, the sixth lever element is pivotally connected to the vehicle seat bottom part and the seventh lever element is pivotally connected to the lever element connector.

A seat support mechanism including a lifter, and configured to perform a cushion frame suspension function no matter to what height a cushion frame is adjusted. Torsion bars extending in the width direction of a cushion frame and elastically supporting the cushion frame are supported by a link mechanism disposed between sliders and the cushion frame. Even if the attitude of the link mechanism is displaced when the lifter adjusts the height, the positions of the torsion bars are displaced so as to follow the displacement. The torsion bars elastically support the cushion frame no matter to what height the torsion bars are displaced. Thus, no matter to what height the cushion frame is adjusted, the torsion bars are able to support the cushion frame with predetermined elasticity and to exhibit predetermined vibration absorption characteristics.

The invention relates to a vehicle seat comprising a backrest portion and a seating surface portion, each of which is arranged to be connected with a seat base portion, wherein the backrest portion is resiliently arranged and supported to be able to swivel with respect to the seat base portion, and wherein the seating surface portion is arranged to be able to move in at least a longitudinal direction of the seat frontwards and rearwards with respect to the seat base portion, wherein the backrest portion and the seating surface portion are operatively connected together via a first lever arrangement in such a way that the seating surface portion is able to move rearwards in the longitudinal direction of the seat when the backrest portion makes a suspending movement with respect to the seat base portion in a direction away from the seating surface portion.

A body weight adjustment mechanism for automatic adjustment to a balanced point is provided to improve vibration absorption characteristics and impact absorption characteristics. A torsion angle of a lower frame-side torsion bar when an upper frame is at a balanced point is found in advance, a torsion angle of the lower frame-side torsion bar in a state in which a person is seated is detected, the detected torsion angle is compared with the aforesaid balanced point torsion angle, a control signal is sent to an elastic force adjusting unit, and torsion angles of upper frame-side torsion bars are adjusted so that the torsion angle of the lower frame-side torsion bar becomes equal to the balanced point torsion angle. The upper frame can be set to an appropriate position in an initial state and a static state in which a person is seated and vibration and impact absorption characteristics are improved.

Vehicle seat comprising a vehicle seat top part, a vehicle seat bottom part and a guide device for guiding the vehicle seat top part with respect to the vehicle seat bottom part when the vehicle seat top part is deflected relative to the vehicle seat bottom part.

The guide device includes a first assembly having a first lever element, a second lever element and a lever element connector. The first lever element and the second lever element are arranged so as to extend forwards in a longitudinal direction.

The guide device also includes a second assembly having a third lever element, a fourth lever element and the lever element connector. The third lever element and the fourth lever element are arranged so as to extend backwards in a longitudinal direction.

The guide device further includes a stabilization device having a fifth lever element, a sixth lever element and a seventh lever element, which are pivotally connected by means of a shared pivot axis. The fifth lever element is pivotally connected to the vehicle seat top part, the sixth lever element is pivotally connected to the vehicle seat bottom part and the seventh lever element is pivotally connected to the lever element connector.

The invention relates to a suspension device, in particular for a vehicle seat, comprising an upper suspension part and a lower suspension part, which can be connected to one another by a first swivelling connector and a second swivelling connector, wherein a first spring unit can be connected in a first end region on the one hand by means of an adjusting device to the first swivelling connector and can be connected in a second end region on the other hand to the lower suspension part, wherein by means of the adjusting device the position of the first spring unit can be adjusted in order to adjust the spring force and the spring rate of the suspension device.

A vehicle is provided. In one embodiment, the vehicle includes a work implement and a cab positioned forward of the work implement. The cab defines a cab interior that includes a vehicle operator portion, an implement operator portion defined rearward of the vehicle operator portion, and an implement operator seat positioned in the implement operator portion that is configured to face rearward toward the work implement. In another embodiment, the vehicle includes a work implement; a cab positioned forward of the work implement; a vehicle operator seat mounted within the cab that faces a front of the vehicle; an implement operator seat mounted within the cab rearward of the vehicle driver seat and that faces a rear of the vehicle; and one or more controls mounted proximate the implement operator seat that are configured for operating the work implement. A system for operating a work implement also is provided.