Abstract: A stair lifting chair includes a chair, a first guiding assembly, and a second guiding assembly. The first guiding assembly includes a guiding frame and a first cleaning member. The first guiding frame includes a first inner space for the first rail passing therethrough. The first cleaning member is disposed at the first guiding frame to clean a first outer surface of the first rail. The second guiding assembly includes a second guiding frame and a second cleaning member. The second guiding frame includes a second inner space for the second rail passing therethrough. The second cleaning member is disposed at the second guiding frame to clean a second outer surface of the second rail.

Abstract: A calf rest and support structure of a wheelchair includes a rail, an adjusting and moving set movably disposed to the rail, a first swing member pivotally connected with the adjusting and moving set and having a first curved groove and a third pivot hole, a lock bolt secured to the adjusting and moving set through the first curved groove of the first swing member, a second swing member pivotally connected with the third pivot hole of the first swing member so as to be swung relative to the first swing member, and a calf support member fixed to the second swing member.

Abstract: A mechanism for linking a chair and a footrest of a stairlift to each other includes: a base; a chair mounted on the base and having a seat swingably connected to the base and a cord control portion; a footrest having a plate pivotally connected to the base; a link unit having a first link and a footrest pivotal portion for driving the footrest to swing, wherein the first link has a base pivotal connection portion pivotally connected to the base, a cord-penetrable portion, and a spring-hooked portion; a control cable having a cord penetrating the cord-penetrable portion, wherein the cord has a first end connected to the cord control portion of the chair, a second end, and a link-pressing portion for pressing against the cord-penetrable portion; and a cable-connected spring with two ends hooked to the base and the second end of the control cable, respectively.

Abstract: A mechanism for linking a chair and a footrest of a stairlift to each other includes: a base; a chair mounted on the base and having a seat swingably connected to the base and a cord control portion; a footrest having a plate pivotally connected to the base; a link unit having a first link and a footrest pivotal portion for driving the footrest to swing, wherein the first link has a base pivotal connection portion pivotally connected to the base, a cord-penetrable portion, and a spring-hooked portion; a control cable having a cord penetrating the cord-penetrable portion, wherein the cord has a first end connected to the cord control portion of the chair, a second end, and a link-pressing portion for pressing against the cord-penetrable portion; and a cable-connected spring with two ends hooked to the base and the second end of the control cable, respectively.

Abstract: An overspeed braking mechanism for a stairlift includes: a main shaft driven by a motor to rotate; a claw member connecting with the main shaft to thereby rotate synchronously with the main shaft and having a tooth; a cam member connecting with the claw member and having an abutting portion spaced apart from the tooth of the claw member radially by a predetermined angle; a driven unit having a cam contact portion, wherein the abutting portion of the cam member abuts against the cam contact portion to cause the driven unit to swing, whereas a pawl portion of a claw contact member engages with the tooth of the claw member and has a switch contact portion; and a micro switch adapted to be touched by the switch contact portion, controlling the motor to drive the main shaft to rotate.

Abstract: A leg rest device of a power vehicle includes: a supporting unit; a first lifting unit pivotally provided at the supporting unit and pivotable with respect to the supporting unit; a second lifting unit mounted to the first lifting unit and movable in a telescoping manner; an actuation unit connected to the supporting unit and configured to drive the first lifting unit; and a linkage unit having a first connecting member, a second connecting member, and a third connecting member, wherein the first connecting member and the second connecting member are separately and pivotally connected to the supporting unit while the third connecting member is separately and pivotally connected to the first connecting member, the second connecting member, and the second lifting unit.

Abstract: A seat back linking mechanism includes a base frame having a pivot portion; a back frame pivotally connected to the base frame; an actuation member slidably coupled to the back frame; a linkage having a first link and a second link pivotally coupled together, the first link and the second link being respectively pivotally coupled to the pivot portion of the base frame and the actuation member, and a driven slot; and a drag member having a drag pin adapted for dragging the driven slot of the linkage.

Abstract: A leg rest device of a power vehicle includes: a supporting unit; a first lifting unit pivotally provided at the supporting unit and pivotable with respect to the supporting unit; a second lifting unit mounted to the first lifting unit and movable in a telescoping manner; an actuation unit connected to the supporting unit and configured to drive the first lifting unit; and a linkage unit having a first connecting member, a second connecting member, and a third connecting member, wherein the first connecting member and the second connecting member are separately and pivotally connected to the supporting unit while the third connecting member is separately and pivotally connected to the first connecting member, the second connecting member, and the second lifting unit.

Abstract: A seat tilt angle control device includes a tilt unit including a drive mechanism for tilting the tilt unit within a predetermined range and a mounting assembly, a control unit angularly adjustably mounted in the mounting assembly of the tilt unit and including a switch electrically coupled to the drive mechanism and movable between a first angle range where the switch controls the drive mechanism to be movable and a second angle range where the switch controls the drive mechanism to be immovable.

Abstract: A folding mechanism of vehicle includes a pivot unit having a stationary gear, a chassis unit having a frame pivotally connected with the pivot unit, a swivelable unit pivotally connected with the chassis unit and fixedly connected with a driven gear, and a rack engaged with the stationary gear of the pivot unit and the driven gear of the swivelable unit. When the chassis unit is pivotally folded relative to the pivot unit, the rack is moved to drive the driven gear to rotate, such that the swivelable unit swings relative to the chassis unit.

Abstract: A folding device of a power scooter includes a base which includes a front portion and a rear portion. Two folding units are located on two sides of the base and pivotably connected between the front portion and the rear portion. The rear wheel unit is driven by a motor and moves toward the front wheel unit of the scooter to fold the front and rear portions.

Abstract: A seat back linking mechanism includes a base frame having a pivot portion; a back frame pivotally connected to the base frame; an actuation member slidably coupled to the back frame; a linkage having a first link and a second link pivotally coupled together, the first link and the second link being respectively pivotally coupled to the pivot portion of the base frame and the actuation member, and a drag portion; and a drag member having a drag portion adapted for dragging the drag portion of the linkage.

Abstract: A seat tilt angle control device includes a tilt unit including a drive mechanism for tilting the tilt unit within a predetermined range and a mounting assembly, a control unit angularly adjustably mounted in the mounting assembly of the tilt unit and including a switch electrically coupled to the drive mechanism and movable between a first angle range where the switch controls the drive mechanism to be movable and a second angle range where the switch controls the drive mechanism to be immovable.

Abstract: A folding mechanism of vehicle includes a pivot unit having a stationary gear, a chassis unit having a frame pivotally connected with the pivot unit, a swivelable unit pivotally connected with the chassis unit and fixedly connected with a driven gear, and a rack engaged with the stationary gear of the pivot unit and the driven gear of the swivelable unit. When the chassis unit is pivotally folded relative to the pivot unit, the rack is moved to drive the driven gear to rotate, such that the swivelable unit swings relative to the chassis unit.

Abstract: A wheel set structure of an electric wheelchair is disclosed to include a wheelchair frame, which defines a first steering direction and a second steering direction reversed to the first steering direction, at least one swinging mechanism pivotally mounted on the wheelchair frame each having a swinging member and a wheel holder, at least one transmission wheel assembly connected to the swinging member each having a motor and a driving wheel coupled to and rotatable by the motor, and at least one first wheel assembly mounted on the wheel holder each pivotally holding a wheel. When the at least one swinging member is biased relative to the at least one wheelchair frame, the at least one first wheel assembly is biased with the at least one swinging member so that the elevation of the wheel of each first wheel assembly and the elevation of the driving wheel of each transmission wheel assembly are relatively changed at a constant ratio.

Abstract: A wheel set structure of an electric wheelchair is disclosed to include a wheelchair frame, which defines a first steering direction and a second steering direction reversed to the first steering direction, at least one swinging mechanism pivotally mounted on the wheelchair frame each having a swinging member and a wheel holder, at least one transmission wheel assembly connected to the swinging member each having a motor and a driving wheel coupled to and rotatable by the motor, and at least one first wheel assembly mounted on the wheel holder each pivotally holding a wheel. When the at least one swinging member is biased relative to the at least one wheelchair frame, the at least one first wheel assembly is biased with the at least one swinging member so that the elevation of the wheel of each first wheel assembly and the elevation of the driving wheel of each transmission wheel assembly are relatively changed at a constant ratio.