A wheelchair having a seat assembly and a base assembly. The base assembly includes a central frame, rear wheels, and leg assemblies. The leg assemblies are movable between at least a first position and a second position, which enables the leg assemblies to be stowed away when not in use. The seat assembly includes a seat component, a backrest component, and opposing side structures. The backrest component is connected to, and pivotable about, the side structures such that it may be folded down for storage or reclined for more comfortable sitting. The side structures include adjustable armrest assemblies that enable vertical adjustments of the armrests.

This electromobility vehicle includes a vehicle frame, a seat unit mounted to the vehicle frame, a suspension mounted to a front-end side of the vehicle frame, a pair of front wheels aligned in a direction parallel to a width dimension of the vehicle and supported by the suspension, at least one rear wheel supported by the vehicle frame, and a drive device that drives either of the front wheels and the rear wheel, where the front wheels are omnidirectional wheels whose outer circumferential surfaces are formed by a plurality of rollers and the pair of front wheels is supported by the suspension such that it is placed in a toe-in arrangement.

This electromobility vehicle includes a vehicle frame, a seat unit mounted to the vehicle frame, a suspension mounted to a front-end side of the vehicle frame, a pair of front wheels aligned in a direction parallel to a width dimension of the vehicle and supported by the suspension, at least one rear wheel supported by the vehicle frame, and a drive device that drives either of the front wheels and the rear wheel, where the front wheels are omnidirectional wheels whose outer circumferential surfaces are formed by a plurality of rollers and the pair of front wheels is supported by the suspension such that it is placed in a toe-in arrangement.

A powered wheelchair includes a seat, a first leg, a second leg, and a control unit. The first leg includes a first inertial measurement unit configured to determine a position of the first leg and a first leg actuator configured to adjust a position of the first leg. The second leg includes a second inertial measurement unit configured to determine a position of the second leg and a second leg actuator configured to adjust a position of the second leg. The control unit is operable to determine a global orientation of the powered wheelchair by averaging the position of first leg and the position of the second leg, and automatically adjusting the position of the first leg with a first leg actuator and the position of the second leg with the second leg actuator based on the global orientation to maintain the seat in a pre-selected position.

A wheelchair is described herein, including wheels, a support frame that engages with the wheels, a seat base fitted to the support frame, and suspension between the frame and the seat base, wherein the seat base is adapted to move with respect to the support frame when a human occupant is seated on the seat base such that the suspension dampens body weight force between the seat base and the support frame.

A dampening system is efficient in dampening vibration through a wheelchair frame. The system allows a lower base frame and wheels to be rigidly attached, while an upper seat frame is joined to the base frame through elastomeric dampening bushings to isolate the seat frame from the base frame. The bushings may be hidden in vertical upright tubes of the base frame. The bushings can also be used for supporting front caster forks and/or a rear axle assembly in isolation to the base frame.

A powered wheelchair includes a seat, a first leg, a second leg, and a control unit. The first leg includes a first inertial measurement unit configured to determine a position of the first leg and a first leg actuator configured to adjust a position of the first leg. The second leg includes a second inertial measurement unit configured to determine a position of the second leg and a second leg actuator configured to adjust a position of the second leg. The control unit is operable to determine a global orientation of the powered wheelchair by averaging the position of first leg and the position of the second leg, and automatically adjusting the position of the first leg with a first leg actuator and the position of the second leg with the second leg actuator based on the global orientation to maintain the seat in a pre-selected position.

This electromobility vehicle includes a vehicle frame, a seat unit mounted to the vehicle frame, a suspension mounted to a front-end side of the vehicle frame, a pair of front wheels aligned in a direction parallel to a width dimension of the vehicle and supported by the suspension, at least one rear wheel supported by the vehicle frame, and a drive device that drives either of the front wheels and the rear wheel, where the front wheels are omnidirectional wheels whose outer circumferential surfaces are formed by a plurality of rollers and the pair of front wheels is supported by the suspension such that it is placed in a toe-in arrangement.

The present invention provides a double parallelogram vertical lifting device comprising a linkage mechanism and a pushing device. The linkage mechanism comprises a first shaft seat, a second shaft seat, a third shaft seat, an upper support unit movably coupled to the first shaft seat and the second shaft seat on both ends, and a lower support unit movably coupled to the second shaft seat and the third shaft seat on both ends. The upper support unit is provided with a first gear, and the lower support unit is provided with a second gear that meshes with the first gear. The pushing device has one end set on the upper support unit and the other end set on the lower support unit. The invention utilizes the interaction of the first gear and the second gear to generate a reaction force, which enables the lower support unit to cooperate with the upper support unit to move up and down synchronously, and achieves the effect of simple structure and large load capacity.

A mobile body (1A) includes: a base body (3) tiltably assembled to a movement operation section (2) that can move on a floor surface; an occupant riding section 6 installed to the base body (3) by a connection mechanism (4); an auxiliary ground contact section 7 connected to the occupant riding section (6) and in contact with the floor surface in a slidable or rollable manner when a tilt amount of the occupant riding section (6) with respect to the floor surface increases to a predetermined amount; and a control device (80) which controls the movement of the movement operation section (2) to stabilize the attitude of the mobile body (1A). The connection mechanism (4) elastically rocks the occupant riding section (6) with respect to the base body (3) according to the movement of the center of gravity of a user P riding on the occupant riding section (6).