Disclosed is a nursing bed-chair assembly, which includes a nursing bed and a wheelchair. The nursing bed includes a bed frame, and a connecting mechanism and an interfacing mechanism which are mounted on the bed frame. The butt-joint mechanism includes a guide rail, a butt-joint fixing plate and butt-joint members. The guide rail is mounted on the bed frame, the butt-joint fixing plate is slidably mounted on the guide rail, and the butt-joint members are mounted on the butt-joint fixing plate. The wheelchair includes a wheelchair frame, a backrest and a seat plate which are mounted on the wheelchair frame, main wheels rotatablely mounted on both sides of the wheelchair frame, armrests, and butt-joint portions in butt joint with the butt-joint members.

Provided is a steering mechanism (8) including a swing bar (81a) which swings in response to input from a rider, a cam guide (83c) slidable on a peripheral surface of a column section (5a), a ball joint (82a) which slides the cam guide (83c) in response to the swinging of the swing bar (81a), a cam follower (83b) vertically provided on the peripheral surface of the column section (5a) to rotate the column section (5a) in response to the sliding of the cam guide (83c), and a coil spring (83e) which returns the cam guide (83c) to a predetermined rotation angle. The cam follower (83b) comes in contact with a cam surface (83c4) of the cam guide (83c) which has a recess surface shape, at two positions on the peripheral surface, in a state where the column section (5a) is located at a predetermined position.

A wheelchair comprising a support frame (200), a seat frame (210), which is connected movingly in its front part to the support frame (200), and is connected in its rear part to the support frame (200) via a spring shock absorbing mechanism in the form of a torsion beam (105) connected to the rear axle (101) of the wheelchair, via at least one connecting element (104) allowing for immobilization of the connection between the torsion beam (105) and the rear axle (101), wherein at least one end of the torsion beam (105) is fixedly connected to the lever (110) which is pivotally connected to the connector (120) connected to the rear part of the seat frame (210), furthermore, the ends of the torsion beam are pivotally supported by the slide sleeves (103) located in the brackets (102) mounted on the rear axle (101).

An improved sit-to-stand wheelchair having a base for engaging a surface and carrying a power actuated elevating drive supporting a patient seat and a wheels with improved footrests that may be retractable, said power actuated elevating drive simultaneous elevating the seat and lowering the base into fixed engagement with a surface when the patient desires to move to a standing position.

An electrically assisted wheelchair includes a controller that obtains an inclination assist value by correcting the assist value when a road surface is inclined in a left-right direction of the seat, and performs a downhill turning preventing operation of causing the wheelchair body to travel straight by applying right auxiliary power and left auxiliary power corresponding to the inclination assist value. The controller adjusts the right auxiliary power and the left auxiliary power by correcting the inclination assist value based on a hand rim operation of the user to operate at least one of the right hand rim and the left hand rim in the downhill turning preventing operation.

This invention consists of a propulsion system for cart type vehicles, or carts (1), whereby a self-balancing scooter, or hoverboard (2), is attached at its rear by means of an articulated structure comprising two control arms (31 32), such that the hoverboard (2), in addition to pushing and controlling the speed, is also a means of transport for the driver, who operates by making a natural use of the cart's handlebar, since it is not necessary to have the ability that the natural use of the hoverboard (2) requires, because both control arms (31, 32), in addition to providing stability, being connected to the hoverboard (2) by articulated joints (1231, 1232) located above each corresponding foot placement platform (201, 202) and pointing to the rotation center of the cart (1) when the cart (1) is stationary, control the direction of the hoverboard (2).

The disclosure provides a driving force applied position estimation system that can accurately estimate an applied position of a driving force from an occupant. A measurement system includes a six-axis force sensor provided in a wheelchair, a rotation angle recognition part which recognizes a rotation angle of the six-axis force sensor, and a COP estimation part which estimates a COP that is the applied position of the driving force from the occupant to the wheelchair. The COP estimation part estimates the COP based on a translational force and a moment detected by the six-axis force sensor and based on the rotation angle recognized by the rotation angle recognition part.

A wheelchair comprising a seat back, a seat bottom, a frame, two front wheel assemblies, two drive wheels, two wheelchair wheels, and an anti-rollback wheelchair braking system consisting of two braking units, each unit comprising a housing cylinder body cap, a housing cylinder body, a housing cylinder mounting assembly, a wheelchair mounting assembly, rotatable toggle clamp direction selection lever, an anti-rollback, one-way, brake assembly, and a toggle clamp assembly for engaging the said anti-rollback, one-way, brake assembly with a wheelchair wheel. A parking brake assembly may also be included. The invention may be manufactured and sold as a whole wheelchair assembly or a retrofit kit for standard wheelchairs.

A reciprocating drive motion wheelchair is provided. The wheelchair device includes a low-profile wheelchair that utilizes push bars pivotally connected to the wheelchair frame and operably connected to a crank bar, which run parallel to the ground and connects back to a crank on each wheel. An additional pair of wheels is disposed rearward of the drive wheels and prevents the wheelchair from tipping, thus allowing the user to utilize the push bars to move the wheelchair quickly and easily.

A wheelchair comprising a support frame (200), a seat frame (210), which is connected movingly in its front part to the support frame (200), and is connected in its rear part to the support frame (200) via a spring shock absorbing mechanism in the form of a torsion beam (105) connected to the rear axle (101) of the wheelchair, via at least one connecting element (104) allowing for immobilization of the connection between the torsion beam (105) and the rear axle (101), wherein at least one end of the torsion beam (105) is fixedly connected to the lever (110) which is pivotally connected to the connector (120) connected to the rear part of the seat frame (210), furthermore, the ends of the torsion beam are pivotally supported by the slide sleeves (103) located in the brackets (102) mounted on the rear axle (101).