Abstract: A chair device for a person carrier includes a backrest unit formed by a front backrest and a rear backrest. The backrest unit is pivotally joined to a seat unit in which two opposite fan-shaped limit projecting members are provided at each pivot-joint end of the seat unit. The fan-shaped limit projecting members can be angularly displaced to a position to be engaged with fan-shaped recesses in the pivot-joint ends of the rear backrest. The fan-shaped limit projecting members have a position limited space for angular displacement within the fan-shaped recesses so that the backrest unit of the chair can move in the range between a collapsing state and an unfolding state. Furthermore, strength reinforcing edge ribs are provided at both sides where the front backrest is assembled to the rear backrest.

Abstract: An electric wheelchair is disclosed. The electric wheelchair includes a main frame correspondingly pivoted with a foldable chair while the folding of the chair connects with an accessory tip wheel. Moreover, the main frame is disposed with main wheels and a front wheel set arranged on front of the main wheel correspondingly on each of two sides thereof. A footrest that is pulled out or stored in the main frame is arranged between the two front wheel sets. In use, the footrest is pulled out of the main frame and the chair is moved and unfolded. At the same time, the accessory tip wheel tilted a little angle is extended out of the main frame by a connecting member. Thereby the problem caused by movement of the center of gravity of the wheelchair while moving can be solved and the safety of users is ensured.

Abstract: A man-carrying vehicle has a chassis, which can be reduced for the vehicle to be easy to store, put away and transport; the chassis includes a front part, a rear part, and a stretching and reducing device interposed between the front and the rear parts; the stretching and reducing device includes first and second stationary components, first and second crank and connecting rod combinations, and a stretching and reducing assistant unit; the first and the second stationary components are fixedly joined on the front and the rear parts respectively; the crank and connecting rod combinations are interposed between and pivoted to the stationary components; the stretching and reducing assistant unit is interposed between and pivoted on one of the stationary components and one of the crank and connecting rod combinations to provide power to change position of the front part in relation to the rear part of the chassis.

Abstract: A foldable vehicle frame includes a first main body, a second main body having a pedal portion and at least one joint portion, and a connecting mechanism connected to the first main body and the second main body. The connecting mechanism further includes a pair of rod parts, and the pair of rod parts respectively has a head end and a tail end. The head end is rotatably connected to the first main body, and the tail end is rotatably connected to the second main body, such that the connecting mechanism is turned over and stacked at a lower layer of the first main body, and the pedal portion of the second main body is folded under the turned-over connecting mechanism, so as to form a folded state. Furthermore, the connecting mechanism, the first main body, and the second main body are all unfolded simultaneously to form an unfolded state.

Abstract: A person carrying vehicle includes a main frame, a seat pivoted on the main frame, a front frame, an articulate supporting member connecting the main frame and the front frame, and a telescopic steering mechanism pivoted on the front frame; by means of pivoting supporting rods of the seat downwards, folding the articulate supporting member as well as shorting and pivoting the steering mechanism, the vehicle can be reduced into a not-in-use configuration, wherein the supporting rods and a seat pad are received in a hollow holding portion of the main frame, a footrest board of the front frame hidden under the main frame, and a tube part of the steering mechanism is received in grooves on the seat; the vehicle has a lift handle at a front, and auxiliary casters at a rear, which are used for the vehicle to be moved in a sloping position on the floor.

Abstract: A cart has an assistant stand mechanism, which includes two first casters, a pair of metallic angle plates, a support rod, and a second caster with a brake; each of the first casters is fitted to one of two rear lateral straight parts of a chassis; the metallic angle plates are each screwed onto a respective one of the rear lateral straight parts of the chassis; the support rod is secured to the metallic angle plates at two ends such that it crosses the cart, and is normally perpendicular to the ground where the cart stands; the second caster is fitted to the support rod; further, there are two sloping rods, each connected to the support rod at one end, and connected to a corresponding metallic angle plate at the other end; thus, the cart can stand on the casters with the chassis in upright position.