Abstract: The electrical wheelchair with spliced front wheel drive and rear wheel drive of the invention comprises a wheel frame and a chair. The wheel frame has a hollow column with a locating ring on its top and a plurality of locating chute on the ring rim. A semi-circular protrusion is placed on the surface of the locating ring. The wheel frame provides a power rod for controlling the moving direction of the wheelchair. There are two foldable footplates erected, one in the front side and the rear side and the footplate is folded when not in use. Beneath the chair, there is rotary shaft inserted in the hollow column. Along the side of the rotary shaft, there install two locating seats, a control stick passing through the holes of the locating seats. The control stick is operated to engage or disengage the locating ping from the locating chute. On the correspondent opposite position of the locating ring, there installs a micro switch.

Abstract: The electrical wheelchair with spliced front wheel drive and rear wheel drive of the invention comprises a wheel frame and a chair. The wheel frame has a hollow column with a locating ring on its top and a plurality of locating chute on the ring rim. A semi-circular protrusion is placed on the surface of the locating ring. The wheel frame provides a power rod for controlling the moving direction of the wheelchair. There are two foldable footplates erected, one in the front side and the rear side and the footplate is folded when not in use. Beneath the chair, there is rotary shaft inserted in the hollow column. Along the side of the rotary shaft, there install two locating seats, a control stick passing through the holes of the locating seats. The control stick is operated to engage or disengage the locating ping from the locating chute. On the correspondent opposite position of the locating ring, there installs a micro switch.

Abstract: A safety brake type rollator which is normally in detained state, but it starts to advance when releasing grips installed on both handle bars are gripped, is disclosed. The elaborate utilization of lever principle associated with power transmission between two ratchet wheels realizes innovative effect of the present invention.

Abstract: The present invention provides a chart chassis composed of a front and a rear cart frameworks bridged together, while the releasing and assembling mechanism comprises a handle bar, a turnable member and a joint assembly. By pulling the handle bar to turn the turnable member outwards, and separating the joint assembly from the turnable member thereby performing instant detachment of the cart chassis.