A modular power base for a wheelchair, the modular power base includes a leg module. The leg module includes an upper leg portion comprising a distal end and a proximal end. The proximal end is configured to be detachably and rotatably coupled to a seat portion of the wheelchair. The leg module also includes a lower leg portion having a first end and a second end, the first end of the lower leg portion being rotatably coupled to the distal end of the upper leg portion. The leg module also includes a first wheel rotatably coupled to the distal end of the upper leg portion and to the first end of the lower leg portion and a second wheel rotatably coupled to the second end of the lower leg portion.

The present invention relates to an electric wheelchair having a voice recognition drive system comprising: a traveling apparatus main body unit which has a plurality of wheels in a lower end thereof; a seating unit which is installed in an upper end of the traveling apparatus main body unit so as to be able to be lifted; an auxiliary robot leg unit which is able to be inserted into and protrude from the traveling apparatus main body unit, and which includes multi-joint driven by an external force; and a voice recognition drive unit which extracts a preset command from an externally input voice, and which drives the plurality of wheels, lifts the seating unit, and drives the auxiliary robot leg unit.

The present invention relates to moving apparatus based on bearing points created by ends of lever arms with changeable length. The lever arm comprises two main components: body and end of lever arm. Lever arm body moves spirally or pendulously around the axis which is different from its axis, end of lever arm moves in and out along the lever arm body. The combination of movement of body and end of the lever arm creates bearing points of the apparatus on the terrain, thus creating capability to overcome barricades of the apparatus. Moreover, the combination of these two movements, when following appropriate principles, creates equilibrium for the frame of the apparatus on various terrains.

A supporting structure includes two pairs of legs and four wheels each arranged at a lower end of a respective one of the legs. Each leg includes an upper segment and a lower segment, and optionally a retractable leg extension segment for contacting ground instead of the corresponding wheel. Such supporting structure is adapted for producing a lowering motion while keeping the legs crossed on both lateral sides. Such supporting structure may be adapted for assisting a disabled person in travelling on the ground, and also possibly in climbing stairs.

A drive assembly is provided and includes a rotatable housing, a motor disposed within and to rotate with the housing, the motor including a drive element and first and second drive shafts, which are independently rotatably drivable by the drive element, a first drivable element coupled to the first drive shaft such that rotation thereof is transmitted to the first drivable element and configured to propel the housing in a first direction during first drive shaft rotation and a second drivable element coupled to the second drive shaft such that rotation thereof is transmitted to the second drivable element and configured to propel the motor in a second direction, which is transversely oriented relative to the first direction, relative to the housing during second drive shaft rotation.

A modular power base for a wheelchair, the modular power base includes a leg module. The leg module includes an upper leg portion comprising a distal end and a proximal end. The proximal end is configured to be detachably and rotatably coupled to a seat portion of the wheelchair. The leg module also includes a lower leg portion having a first end and a second end, the first end of the lower leg portion being rotatably coupled to the distal end of the upper leg portion. The leg module also includes a first wheel rotatably coupled to the distal end of the upper leg portion and to the first end of the lower leg portion and a second wheel rotatably coupled to the second end of the lower leg portion.

The invention relates mainly to a wheel system (S) intended to be rotationally driven about a central axis (X), comprising two distinct parts (R1, R2) arranged in such a way as to be in pivoting connection with one another about the central axis (X), the wheel system (S) is designed in such a way as to occupy two positions; a first position, referred to as the mounted position, in which the two distinct parts (R1, R2) are superposed, and a second position, referred to as the standard position, in which the two distinct parts (R1, R2) are angularly offset from one another so as to form a disc in the plane (P) perpendicular to the central axis (X), the transition from the mounted position to the standard position being carried out by means of a translational movement, along the central axis (X), of one of the distinct parts (R2) with respect to the other (R1).

A multi-leg independent mobile carrier device, comprising: a base (1), a traveling mechanism (2), and a posture adjustment mechanism (3). The base (1) is used for carrying a human being or an object. The traveling mechanism (2) comprises a driving unit (21) connected to the base (1) and a connecting rod unit (22) rotatably connected to the driving unit. The traveling mechanism (2) is used for driving the base (1) to travel and get over any obstacles. The posture adjustment mechanism (3) is connected to the base (1) and used for keeping the human being or object balanced. The multi-leg independent mobile carrier device integrates a traveling mechanism and a posture adjustment mechanism. The posture adjustment mechanism is used for keeping the base balanced all the time and the traveling mechanism is used for driving the entire device to travel and turn around more flexibly. Therefore, the technical problem of a carrier device being unable to satisfy requirements of good obstacle performance, comfortable riding experience, and flexible traveling is effectively solved. The obstacle crossing ability of the multi-leg independent mobile carrier device is enhanced, and user experience is improved.

An improved vehicle is provided that has an excellent obstacle overcoming ability, including stair climbing. The apparatus comprises a frame, and a pair of endless track units positioned on opposite sides. Each track unit has a plurality of telescoping rollers in contact with the inner track surface configured to guide the track around a track pathway, and move vertically when navigating over obstacles. Each track unit further comprises a drive assembly in contact with the track, and movable between a raised position and a lowered position, such that movement of the drive assembly also operates to provide track tension.

The present invention relates to a curb climbing system for a wheelchair having a pair of rear larger drive wheels, a pair of small caster wheels, and a static hand grip for a caregiver being located at a back region behind an occupant seat; the system comprises: (1) a rear rollover-climb lever mechanically linked to a pivot to permit the caregiver located at the back-end region of the wheelchair to apply a downwards forceful thrust sufficient to shift the lever from an upward-position to a downward-position; and (2) a mechanical torque engagement system to translate the downwards forceful thrust to a rollover rotation torque around a pivot point on a stair-like curb, to climb over the stair-like curb. During climb procedure, a ratchet system provides unidirectional backwards rotation of the rear wheel pair and prevents forward rotation to block the wheelchair from rolling down the stairs for safety.