A mobile object is configured so as to be capable of moving front and rear bases 10,30 object to each other in order to make a wheel base provided between the front wheels 12 and the rear wheels 32 expandable and contractible. The front base 10 moves so as to be expand and contract the tread width between the front wheels 12 in association with the expansion and the contraction of the wheel base achieved. The seating part 41 is configured so as to turn forward in association with the relative movement of the front and rear bases 10,30 in order to contract the wheel base and the tread width. The seating part 41 is configured so as to turn backward in association with the relative movement of the front and rear bases 10,30 in order to expand the wheel base and the tread width.

An adjustable backrest is adapted for a chair frame and includes a first pivoting component, a second pivoting component, a backrest sliding assembly and a backrest connecting component. The second pivoting component is pivoted to the first pivoting component. The backrest sliding assembly is slidably disposed on the first pivoting component. The backrest connecting component is disposed between the first pivoting component and the second pivoting component. A first end of the backrest connecting component is pivoted to the backrest sliding assembly. A second end of the backrest connecting component is pivoted to the second pivoting component. The backrest sliding assembly drives the second pivoting component to pivot relative to the first pivoting component by the backrest connecting component when the at least one backrest sliding assembly slides relative to the first pivoting component, so as to support a user's back portion at different angles.

A folding electric wheelchair with elevating seat that provides the user an electronic driving system powered by two lithium-ion batteries that is sealed to be weatherproof, able to drive over different terrain types and slope grades on any given day whether it's raining or sunny, lightweight, and portable for transportation, travel-friendly, compact in overall size when in the folded position to fit into a small space for storage. An ergonomically contoured seat with an actuator that can raise and lower the seat base overall height. A bump dampening and terrain vibration system with the supporting frame pieces (34), (42), and (50) having an oval shape. The manner of how the embodiment operates to fold and unfold consists of specific hinge joint embodiments including: (46), (48), (58) and (64).

A patient transport apparatus operable by a user for transporting a patient along stairs. A seat section is coupled to a support structure supporting a track assembly having a belt. A motor selectively generates torque to drive the belt. A user interface is arranged for engagement by the user, and has a direction input control for selecting a drive direction of the motor, and an activation input control for operating the motor to drive the belt. A controller in communication with the motor and the user interface is configured to limit operation of the motor in response to user engagement of the activation input control preceding engagement of the direction input control to prevent driving the belt, and to permit operation of the motor in response to user engagement of the activation input control following engagement of the direction input control to drive the belt in a selected drive direction.

A folding wheelchair comprising a luggage compartment, a collapsible frame and wheels, the wheels being mounted to a chassis of the collapsible frame for supporting the folding wheelchair in use, the collapsible frame having a first support pivotally mounted to the chassis at a first end of the first support, the first support and chassis being configured to rotate relative to one another between a stowed position, in which the chassis and the first support are adjacent, and an erect position in which the first support extends away from the chassis to support a seat and handles for pushing the folding wheelchair.

A mobile object according to the present invention includes: a moving base 1, 201, 301 which includes a front base 13, 213, 313 having front wheel 11 and a rear base 14, 214, 314 having rear wheel 12; and a seat 2, 302 which includes a seating part 21 having a seating surface 21a and leg part 22, 322 supporting the seating part 21. The front base 13, 213, 313 and the rear base 14, 214, 314 are movable relative to each other to expand and contract a wheel base H. The seating part 21 is movable backward and forward respectively by movement of the leg part 22, 322 in association with relative movement of the front base 13, 213, 313 and the rear base 14, 214, 314 for expansion and contraction of the wheel base H. Thus, the mobile object can be efficiently used in a folded state, and user-friendliness of the mobile object can be enhanced.

A wheelchair structure includes a seat body, a rear wheel bracket, a push rod device, and two relatively arranged front wheel assemblies, where the front wheel assembly includes a support member and a first wheel body mounted at the bottom end of the support member, the seat body and the rear wheel bracket are rotatably connected between the support members of the two front wheel assemblies, the push rod device includes a push rod and a driving mechanism for driving the push rod to make a telescopic movement, a first end of the push rod is rotatably connected with the bottom of the seat body, a second end of the push rod is rotatably connected with the rear wheel bracket, the push rod makes the telescopic movement to drive the seat body to rotate between the support members of the two front wheel assemblies.

A wheelchair comprises: an armrest bracket (6), a seat bracket, a backrest bracket (3), and a turning mechanism (64), wherein the turning mechanism (64) is configured to make the armrest bracket (6) and the seat bracket rotate synchronously relative to the backrest bracket (3).

There is described a bariatric wheelchair, in particular a manual wheelchair, that includes a wheelchair chassis, a seating area provided on the wheelchair chassis, a backrest supported onto the wheelchair chassis, as well as front wheels and rear wheels provided on the wheelchair chassis to allow wheeling of the wheelchair. The backrest exhibits a lower backrest portion supported onto the wheelchair chassis, next to the seating area, the seating area and lower backrest portion having a first width (W1) that is selected to accommodate a wheelchair user's nominal hips width (WH) ranging between 500 millimeters and 800 millimeters. The backrest further exhibits an upper backrest portion, in the vicinity of the wheelchair user's shoulders, having a second width (W2) that is smaller than the first width (W1), which second width (W2) is selected to liberate space for movement of the wheelchair user's arms and shoulders and so as not to exceed a wheelchair user's nominal shoulder articulation width (WS) ranging between 400 millimeters and 600 millimeters.

There is described a wheelchair, in particular a manual wheelchair for bariatric or heavy-duty use, that includes a wheelchair chassis, a seating area, a backrest, as well as front wheels and rear wheels, said backrest having a backrest frame supported onto the wheelchair chassis. The wheelchair further includes a rolling support structure forming an integral part of the wheelchair, which rolling support structure is mounted on a rear portion of the wheelchair to support the wheelchair in an upright position in which the wheelchair is tilted back and is supported by the rolling support structure to allow displacement of the wheelchair in the upright position. The rolling support structure includes at least three, in particular four, rolling elements providing rolling support for the wheelchair in the upright position. The rolling elements preferably provide omnidirectional rolling support for the wheelchair in the upright position, and may in particular be ball casters