A mobility assistive device includes a first frame including a first support and a first wheel, a second frame including a second support and second wheels, and a connecting structure including first connecting boards connected to the first support. The second support includes a supporting rod and abutting portions. Each first connecting board has a slot for being engaged with the supporting rod, an abutting surface for abutting against the abutting portions, and a perforation. Each positioning member is disposed on one the second support, and includes a positioning portion. When the slots are engaged with the supporting rod and the abutting surfaces are abutted against the abutting portions, the positioning portions are movable between a locked position and a released position. When in the locked position, the positioning portions are inserted into the perforations. When in the released position, the positioning portions are drew out from the perforations.

An assistive wheelchair that provides stand-up capability, vertical height adjustment while seated, and independent toileting is disclosed. The assistive wheelchair includes a verticalization system to move the user from a sitting to a more vertical position by tilting the while maintaining the proper center of gravity through the use of actuators and multi-bar linkages. The verticalization system also allows the seat to move up and down without modifying its tilt angle in order to change the height of the seat. An opening system provides for transversal movement of the wheels, to increase the width of the base of the wheelchair in order to create a space wide enough between the wheels to fit over a lavatory. A trap door seat is also provided that is lowered and moved from under the wheelchair to provide an opening in the wheelchair main seat during toileting.

It becomes possible to monitor a driven state of each wheel in a wheelchair whose wheels are driven according to output information calculated based on input information. A left wheel controller and a right wheel controller are provided. The presence or absence of a drive abnormality of the left wheel is determined by the right wheel controller receiving first drive related information that is related to a drive of the left wheel and transmitted from the left wheel controller, and the presence or absence of a drive abnormality of the left wheel is determined by the left wheel controller receiving second drive related information that is related to a drive of the right wheel and transmitted from the right wheel controller.

A foldable electric wheelchair that includes an array of support frame members strategically joined together at hinge joint points to allow the support user seat, a back support frame, a main support frame and a lower support frame to be easily manually folded into an array that are substantially parallel in the same plane occupying a small volume. The electric motors are powered by a pair of batteries each of which is mounted inside hollow main frame support members out of the way to reduce the overall volume and weight of the electric wheelchair

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 powered wheelchair is operated by sensor-based control pads that include force transducers to produce a variable output signal that is proportional to a varying force applied. The control pad provides an analog-type output that provides a variable speed signal to a controller to operate the wheelchair at a variable speed in both forward/reverse directions and in right or left turning directions.

A chair comprising a sub-frame in contact with the ground and connected to the chair the sub-frame including four wheels to support the chair on the ground and a set of powered driving wheels connected to the rear of the sub-frame to allow the chair to be propelled.

The present teachings provide for wheelchair including a control module, manual drive controls, a camera, biometric sensors, and an antenna. The control module includes an autonomous drive module configured to autonomously pilot the wheelchair. The biometric sensors are configured to measure biometric information of a user of the wheelchair.

A small electric vehicle includes: left and right motors connected so as to respectively transmit power to left and right driving wheels; left and right rotation speed sensors; an inclination sensor; a joystick-type operation element; and a control unit, wherein it is configured to calculate target rotation speeds of the left and right motors, based on a target vehicle speed provided by an inclination angle in consideration of the pitch angle and the roll angle detected through the inclination sensor and by an operation position of the operation element, and on a target vehicle angular velocity provided by the inclination angle, by the operation position of the operation element and by the actual speed of the vehicle, and control the left and right motors such that actual rotation speeds of the left and right motors follow the respective target rotation speeds.

A small electric vehicle includes: a vehicle body that has a forward and backward direction, and a width direction; left and right driving wheels provided apart in the width direction of the vehicle body; left and right motors connected so as to respectively transmit power to the left and right driving wheels; an operation unit that includes a joystick-type operation piece; and a control unit for controlling the left and right motors according to an amount of operation on the operation piece, wherein the control unit is configured to execute deceleration and stop control when the operation piece is returned to the neutral position during travel, and execute rapid stop control irrespective of an amount of operation in left and right directions when the operation piece is tilted backward during forward travel at a speed equal to or greater than a predetermined threshold.