A wheelchair suspension comprises a frame, at least one pivot arm, at least one front caster, at least one rear caster, a stabilizing system, and a sensor. The pivot arm is coupled to the frame. The front caster is coupled to the pivot arm. The rear caster is coupled to the frame. The stabilizing system is coupled to the frame and the pivot arm. The sensor is arranged such that tipping of the frame causes actuation of the stabilizing system to at least partially resist further movement of the frame.

The present disclosure relates to a swing arm assembly (1) for a mid-wheel drive wheelchair (21), comprising: a front swing arm (3) having a front swing arm pivot point (3a), a drive assembly swing arm (5) having a drive assembly swing arm pivot point (5a) and a resilient member first mounting point (5b), a rear swing arm (7) having a rear swing arm pivot point (7a) and a resilient member second mounting point (7b), and a resilient member (9) configured to be connected to the resilient member first mounting point (5a) and to the resilient member second mounting point (7a) to enable force transfer between the drive assembly swing arm (5) and the rear swing arm (7).

A mobility chair has a base frame with a seat bottom, a seatback, motorized drive wheels, and safety wheels, an actuated hoist with a mast, boom, winch, and sling that has a stowed configuration and an operative configuration, and outriggers that have a retracted configuration proximate to the base frame and an extended configuration ahead of the mobility chair. The boom is raised and its forward portion is rotated ahead of the frontmost section of the seat while its rear portion remains behind the boom. The seatback can be raised from the base frame and can also be hingedly connected to the seat bottom which rotates relative to the base frame through a bracket in the front section so that as the seatback is raised, the seat bottom rotates with the seatback into an upright standing configuration with the seat bottom aligned with the seatback in the vertical orientation.

A wheelchair suspension includes a frame, a drive assembly pivot arm, a drive assembly, a front caster pivot arm, a front caster, and a spring and shock absorbing assembly. The drive assembly pivot arm is pivotally connected to the frame. The drive assembly includes a drive wheel and is mounted to the drive assembly pivot arm. The front caster pivot arm is pivotally mounted to the frame and coupled to the drive assembly pivot arm. The front caster is coupled to the at least one front caster pivot arm. The spring and shock absorbing assembly is pivotally connected to the drive assembly pivot arm at a first pivotal connection and pivotally connected to the front caster pivot arm at a second pivotal connection. The first and second pivotal connections are positioned such that a majority of the force applied by the spring and shock absorbing assembly is applied to the drive wheel when the suspension is on a flat, horizontal support surface.

A mobile wheelchair/chair, especially for the disabled, having a body support system mounted on the casing, a swivel and drive assembly and castors is characterized in that the swivel and drive assembly equipped with drive motor (8) and swivel motor (5) has s form of coupled vertical fixed fork (6) furnished with at least one swivel wheel (7), and seat (3) is mounted on the steering and swivel axis of fixed fork (6), with swivel motor (5) located in the upper part of the steering and swivel column (6a) of fixed fork (6). Casing (1) is equipped with castors (2) in its lower part.

A wheelchair includes a frame, a seat attached to the frame, a first forward wheel on a first side of the frame and a second forward wheel on a second side of the frame, a first rearward wheel on the first side of the frame and a second rearward wheel on the second side of the frame, a first drive wheel on the first side of the frame positioned intermediate between the first forward wheel and the first rearward wheel and a second drive wheel on the second side of the frame positioned intermediate between the second forward wheel and the second rearward wheel, and actuators to independently control the vertical position of the first forward wheel relative to the frame, the vertical position of the second forward wheel relative to the frame, the vertical position of the first rearward wheel relative to the frame, the vertical position of the second rearward wheel relative to the frame, the vertical position of the first drive wheel relative to the frame and the vertical position of the second drive wheel relative to the frame.

A movable object includes a sensing device for detecting traveling-route reflector on a travel surface so that a region outside a floor projection region of the movable object, in particular the traveling-route reflector forward, can be detected. Detecting the traveling-route reflector across a wide range of areas allows traveling control, such as gradual deceleration before entering a curve, speed regulation based on a turning radius at the curve so that centrifugal force on a rider or load is not too great. Also the movable object can detect a branch point or an intersection beforehand, decelerate, and notify the user for user's instruction regarding the traveling direction. Furthermore, for a movable object autonomously traveling with an item mounted thereon, a single sensing device detects the traveling-route reflector and also serves as a safety sensor for avoiding collision with any other objects therearound.

A seat unit includes a first seat frame and a second seat frame. The first seat frame is connected with a drive carrier and includes at least one first mounting portion. The second seat frame includes wheel frames and a mounting frame fixedly connected with the wheel frames. Each wheel frame is mounted with an auxiliary wheel. A space is defined between the mounting frame and the wheel frames. The drive carrier is located in the space. The mounting frame includes at least one second mounting portion. One of the first mounting portion and the second mounting portion is a rod, and the other is a receiving portion. The rod is movably inserted through the receiving portion. When the second seat frame is displaced relative to the first seat frame, the auxiliary wheels of the wheel frames can move together relative to the drive wheels of the drive carrier.

Embodiments of a suspension for a vehicle is provided. The suspension includes, for example, a frame and a locking assembly. The locking assembly inhibits tipping of a frame of the vehicle when tipping of the frame is detected.

A wheelchair suspension comprises a frame, at least one pivot arm, at least one front caster, at least one rear caster, a stabilizing system, and a sensor. The pivot arm is coupled to the frame. The front caster is coupled to the pivot arm. The rear caster is coupled to the frame. The stabilizing system is coupled to the frame and the pivot arm. The sensor is arranged such that tipping of the frame causes actuation of the stabilizing system to at least partially resist further movement of the frame.