Abstract: A multi adjustable chair is comprised of a support frame to which is secured an adjustable seat assembly and an adjustable backrest assembly. The backrest assembly has displaceable back support plates that are adjustable to a desired position. A back cushion is secured over back support elements and is displaceable in unison therewith as the backrest is extended or retracted. The seat assembly has a pair of laterally displaceable seat panels as well as a front guide frame and the seat cushion is also extendable both laterally and forwardly as the seat panels and front guide frame are displaced to adjust the size of the seat assembly. The adjustable chair is preferably, but not exclusively, a wheelchair and it is provided with an adjustable support base assembly and a chair tilting mechanism.

Abstract: A foldable stroller with a basket, the basket having a frame with left and right side legs pivotally mounted to the stroller frame for movement between an upper position and a lower position. The legs of the basket frame are supported on side members of the stroller frame that pivot as the stroller frame moves between its folded and open positions, so that folding or unfolding of the stroller frame effects pivotal movement of the basket frame between its lower and upper positions. In another form, a stroller with a basket has handle-operated support members for the side legs of the basket frame that selectively support the basket frame in an upper position, and allow the basket frame to drop to a lower position for easier access to basket interior through the upper opening of the basket.

Abstract: A stroller is provided with a handle having a horizontal middle part and two side pipes. The two side pipes are connected to the horizontal middle part by gear trains so as to be turnable about axes perpendicular to an axis of the horizontal middle part, respectively. A folding part operating mechanism is incorporated into the horizontal middle part of the handle. The side pipes can be folded and unfolded relative to the horizontal middle part by turning the horizontal middle part about its axis.

Abstract: A folding baby carriage comprises a pair of seating surface supporting side bars extending back and forth along both sides of a seating surface in order to support the seating surface from beneath. Each seating surface supporting side bar has a rigid inward extending portion extending toward the inside so as to support the seating surface from beneath, at a rear portion thereof. The inward extending portion is formed by bending a rear end portion of the seating surface supporting side bar toward the inside.

Abstract: Wheelchair designs and enhancements are provided for use with conventional wheelchair designs. The designs and enhancements include first and second contoured folding seat panels that are hingedly mounted with respect to the wheelchair frame and that are offer interlocking functionality. The folding seats generally provide contouring in both front-to-back and side-to-side directions. Features are provided to prevent capture of objects between seat panels as they are brought into interlocking engagement. Pivotal footrests that offer enhanced stability in the form of lateral, front-to-back and up-down stability are provided In addition, axle and axle plate combinations are described that provide enhanced flexibility in relative positioning with respect to the wheelchair frame. The disclosed features and functionalities may be incorporated into wheelchair designs, either in whole or in part, to provide enhanced user interaction with the wheelchair.

Abstract: A seat attaching means for connecting a non-rigid push chair seat to a push chair frame said attaching means including an elongate member, attachable to at least one of the side edges of the seat, and the seat attaching means including a corresponding groove in the frame, into which the elongate member is inserted. The elongate member includes a planar part and an enlarged part, the planar part being attachable along at least one of the side edges of the seat and the enlarged part being insertable in the corresponding groove in the frame. The elongate member is insertable in a first corresponding groove in the frame and in a second corresponding groove in the frame, the first and second corresponding grooves being separated by a hinge. The first and second grooves are co-linear.

Abstract: The folding baby carriage is foldable so that four wheels approach each other back and forth and from side to side. The baby carriage includes a lower frame structure that is positioned above the four wheels to form a seating surface portion of a seat and that is foldable so as to approach back and forth and from side to side with the four wheels, and an inverted U-shaped member extending to rise upward from both sides of the seating surface portion. The inverted U-shaped member remains on a single plane in both the folded state and the opened state without bending out of this plane, but lower ends of the inverted U-shaped member come closer together in the folded state.

Abstract: A single hand folding structure for an umbrella folding stroller includes a connecting element is utilized to connect between a single hand release structure and a driving piece of a folding set. The single hand release structure is disposed on a handle bar of a frame of the umbrella folding stroller so as to allow a user to directly operate with a single hand to release the folding set. An elastic element of the frame is utilized to assist the partial folding of the frame such that the user can directly push the handle bar to fold the frame. Thus, the user avoids using a foot to release the frame to fold and, subsequently, prevents damage to shoes.

Abstract: A foldable stroller with a basket, the basket having a frame with left and right side legs pivotally mounted to the stroller frame for movement between an upper position and a lower position. The legs of the basket frame are supported on side members of the stroller frame that pivot as the stroller frame moves between its folded and open positions, so that folding or unfolding of the stroller frame effects pivotal movement of the basket frame between its lower and upper positions. In another form, a stroller with a basket has handle-operated support members for the side legs of the basket frame that selectively support the basket frame in an upper position, and allow the basket frame to drop to a lower position for easier access to basket interior through the upper opening of the basket.

Abstract: A medical chair provides a radiolucent backrest pivotally secured to a seat section. A pivoting push bar on the backrest pivots between an operative position, where it can be used to maneuver the chair, and a storage position where it does not compromise the radiolucent property of the backrest. The chair includes a leg support section, and the backrest and leg support section pivot between a chair structure and a stretcher structure. The pivoting of the backrest and legs support section are controlled by actuators that are positioned so as not to interfere with the radiolucent property of the backrest. A foot platform on the leg support section is connected to remain substantially parallel to the seat section as the leg support section is pivoted. A remote control allows for adjusting the configuration of the chair from points distant from the medical chair.

Abstract: A wheel chair includes wheel frames which can be adjusted up and down, moving devices and brake devices are connected to two respective sides of the two wheel frames. Support devices are connected to the wheel frames so as to adjust the depth of the wheel frames to which arm rest devices are connected. A folding device is connected between the wheel frames and an assistant device is connected to the folding device. A positioning device is connected to the assistant device so that the wheel chair can be adjusted in many ways to meet different needs of users. The modularized devices effectively reduce manufacturing cost of the wheel chair.

Abstract: A rehabilitation stroller comprises a handrail portion, a front leg portion, a seat and rear leg portion and a backrest portion. The backrest portion is connected to the handrail portion by a clip and an adjusting member such that an angle of the backrest portion with respect to the handrail portion is adjustable. The clip is connected to the backrest portion and the adjusting member connects the handrail portion with the clip by passing through one of a plurality of holes provided in the clip. The backrest portion comprises a frame fixing hook disengageably connected to the seat and rear leg portion and a side blocking tube connected between the clip and the frame fixing hook. A braking device is provided between a pair of rear wheels provided at the seat and rear leg portion.

Abstract: A stroller has a direction-limiting device including a direction-limiting element movable relative to a stroller frame between a limiting position, where the direction-limiting element is inserted into a limiting hole in a wheel-supporting member of a wheel unit so as to prevent rotation of the wheel-supporting member relative to the stroller frame, and a release position, where the direction-limiting element is removed from the limiting hole so as to permit the rotation of the wheel-supporting member relative to the stroller frame. A control device includes an adjusting member disposed on an upper portion of a handle unit of the stroller frame, and a pull cord disposed between the adjusting member and the direction-limiting element. The adjusting member is operable to move the direction-limiting element between the limiting position and the release position.

Abstract: A collapsing device for a carrier can collapse the frames of a stroller with only one hand. The collapsing device mainly comprises a first cover, a second cover, a button partially interposed between the first and the second cover, a safety lock and two pins. It is with only one hand that a user presses the safety lock and simultaneously pushes the button into the interior defined by the first and the second covers to make the pins cooperate the steel cables further releasing a latch mechanism equipped at the frames so that the collapsing operations can be easily accomplished.

Abstract: A transport trolley for transporting goods and/or people, especially for transporting children. The trolley has a trolley frame including shoring elements and at least two wheeled devices provided on the frame and including wheels for rolling the transport trolley in a transport direction on a ground. One of the wheeled devices, as a front wheeled device in relation to the transport direction of the trolley, is arranged on the frame in front of the other rear wheeled device. The wheelbase between the front wheeled device and the rear wheeled device can be adjusted by means of an adjusting device on the trolley frame. Thereby, the wheelbase, i.e. the distance between a wheel of the front wheeled device and a wheel of the rear wheeled device, can be modified if necessary. When said transport trolley is pushed by a person, for example at a running pace, a longer wheelbase of the trolley is required for achieving the necessary tilting stability.

Abstract: A child's walker includes a pair of oppositely spaced A-frames provided with wheels conjoined to a lower portion thereof. Each A-frame has an apex centrally positioned above the wheels and pivotal about the apexes. A semi-spherical seat section is nested intermediate of the A-frames and includes an anchor bracket conjoined to an anterior surface thereof for maintaining the seat section at a stable position. The seat section has a pair of spaced openings for receiving the child's legs therethrough, and is formed from flexible, padded material. Such a seat section is adjustably pivotal about a horizontal fulcrum axis passing through the A-frame apexes. A tray is mateable to the anchor bracket and protrudes horizontally from the seat section. The tray is disengageable from the anchor bracket for assisting a caregiver to fold the walker to a compact shape during transport.

Abstract: A casing (32) included in a baby carriage folding mechanism is mounted on a substantially middle part of the handle of a folding baby carriage. Hinged joints (33) each having a stationary member (34) and a movable member (35) are connected to the opposite ends of the casing (32), and pipes (18) forming the handle are connected to the hinged joints (33), respectively. The pipes (18) are connected to the movable members (35) of the joints (33). Actuating members (38a and 38b) capable of being operated by an operating mechanism included in the casing (32) are connected to the movable members (35) of the hinged joints (33). The actuating members (38a and 38b) turn the movable members (35) relative to the corresponding stationary members (34) for folding and developing the folding baby carriage.

Abstract: Fold flat walking or jogging strollers, as well as various fold flat cargo carrier devices are disclosed, which include at least three wheels which may have pivoting wheel support units and alternative foldable support frame embodiments are disclosed. The wheel support units include, in various embodiments, simple manually manipulable methods to latch each wheel in the operative or stowed flat positions, which effectively allows the device to fold to a flat profile without any part or wheel being detached. Associated innovations include a unique forward wheel folding system, a pivoting or floating transverse axle replicating unit (“false axle”), which pivots and latches to replicate a typical fixed wheel axle, but conveniently pivots to a fold flat stowed position.

Abstract: A folding support structure includes a frame assembly having frame supports, seat supports, back supports, and a plurality of frame brace assemblies. The folding structure also includes a seat structure coupled to the frame assembly. The folding support structure is configured to collapse in a front-to-back manner and in a side-to-side manner.

Abstract: A baby stroller for transporting an infant at speeds faster than normal walking is disclosed. This baby stroller can be folded to make it easier to stow and transport. The folding mechanism, a unique feature of the design is directed toward compactness, ease of use, reliability, and reduction in manufacturing costs.

Abstract: Fold flat wheeled child and cargo carriers adopting pivoting, stowable wheel axles are disclosed, of the general type which may be trailed behind other devices by a stowable and removable tow bar. The carriers may be trailed behind other devices, or are convertible to strollers or push/pull style devices. The pivoting wheel axles in various embodiments, include simple manually manipulable methods to latch each wheel in the operative or stowed flat positions, which effectively allows the device to fold to an ultra-thin profile without any wheel being detached, and the wheel axles and tires, in the stowed positions also secondarily serve to retain the various folding parts in their stowed positions within the device side elevational profile. In the child trailer and cargo carriers, the tow bar, carrier walls and associated parts all fold flat to the device frame, along with the wheel axles and tires.

Abstract: A combined baby car seat and stroller includes a base member removably attachable to the seat of an automobile and a seat member removably engageable and lockable with the base member. The seat member includes a hide-away canopy connected thereto and a plurality of wheels connected to the bottom portion thereof for allowing the seat member to be rolled on a surface. The device further includes an elongated carry handle connected to select ones of the plurality of wheels and a telescopic member connected to the seat member and extendable outwardly and away therefrom for aiding an operator in advancing the seat member when removed from the base member. The device further includes a foot lever and a rocker member positioned below the plurality of wheels so that the seat member can be oscillated along an arcuate path. The seat member may be reclined for convenient travel sleeping.

Abstract: A passenger carrier frame of the invention includes a lower frame member, a folding frame member, a back frame member and a frame folding control. These frame members are pivotally connected adjacent their ends to form a triangular arrangement in side view. The pivotal connections permit the frame to be folded and the frame folding control acts at a selected one of the pivotal connections to drive and lock pivotal rotation at that pivotal connection.

Abstract: A wheelchair has a primary articulated member and at least one secondary articulated member, a primary sensor for detecting the position of the primary member, a secondary sensor for detecting the position of the secondary member, and a controller capable of articulating the secondary articulated member as a function of the movement of the primary articulated member.

Abstract: A stroller includes armrests, rear legs pivotally joined to the armrests, respectively, a handle pivotally joined to the armrests, and brackets interconnecting the handle and the rear legs. The brackets engage with locking members mounted on lower end parts of side pipes of the handle. Holding members are supported on sides of the side pipes opposite to sides of the same with which the brackets are in contact with the side pipes by pins, respectively. When the stroller is folded in two, stopping parts of the locking members and stopping parts of the holding members are engaged, respectively.

Abstract: A folding wheelchair includes two side frame units arranged in parallel at two sides, each side frame unit formed of two four-bar linkages arranged at different elevations, a plurality of folding bars transversely coupled between the side frame units, two sets of guide rods respectively coupled to the side frame units and adapted to guide folding of the wheelchair between the extended position and the collapsed position, and two swivel hooks for hooking on the pivot between each set of guide rods to lock the wheelchair in the extended position.

Abstract: A folding frame type tandem stroller includes at least one side step and a side portion of the folding frame is configured to provide a side access region to the rear seat. A canopy rod actuated locking assembly locks a stroller folding frame in an open position. A front seat tray is pivotable in two directions and a canopy rod assembly is retractable to facilitate a compact folded size of a stroller.

Abstract: An assembly comprises an elongate member and a receiving member. The elongate member has an external cross-sectional shape which is substantially square and has corners replaced by circumferentially spaced circular portions of a circumscribing circle with flat portions therebetween which lie within the circle. The receiving member has a receiving formation having an internal cross-sectional shape which cooperates at least with the flat portions of the external cross-sectional shape of the elongate member to prevent relative movement between the receiving member and elongate member about a longitudinal axis of the elongate member. The assembly is adapted for use in a joining the members of a wheelchair. The invention is further directed towards a structural assembly comprising an elongate member engaging in a receiving formation of a receiving member and a clamp embracing the receiving member to clamp the elongate member in the receiving formation.

Abstract: A collapsible pushchair/carrier has wheels at the front and back. An upstanding spine extends between the rear wheels and handles. A lockable slider assembly can be moved up and down the spine. The front wheels are supported by wheel assemblies connected by pivotable support legs to the slider assembly. Beneath the slider assembly there are pivot joints linked to cranked support arms pivotably connected to the support legs. A foldable transverse strut extends between the front wheel assemblies. A seat is mounted to the ends of the arms remote from the pivot joints to the legs and the spine. The slider assembly can be moved between two operating positions. In one position, the pushchair is operative with the wheels defining a wheelbase between the front and rear wheels and front and rear wheel tracks between the front and rear wheels respectively. In the other position the pushchair is stowed and collapsed with the legs and arms alongside the spine and the front wheels within the rear wheel track.

Abstract: A baby carriage comprises a body frame including a pair of longitudinal side frame members, a seat hammock including a backrest sheet portion, a backside support, and an upper end connecting member. The backside support includes backside string members extending so as to support the backrest sheet portion from the back side such that it can be reclined. The upper end connecting member comprises an upper end string member extending along the whole width of the backrest sheet portion at the upper end in a width direction and having both ends connected to the pair of longitudinal side frame members.

Abstract: For easier care of a bed-ridden patient, a fold-up wheelchair comprises a chair main body (2) having a back rest, the chair main body being foldable upward and downward; rear frames (6) of the chair main body (2); rear legs (15) extending lower rearward, the rear legs being connected to a vertically middle portion of the rear frames (6) so as to be rotatable forward and rearward; extensible working bodies (16) connected to the rear legs (15) and upper end portions of the rear frames (6) so as to be rotatable forward and backward; a motor (17) operating the respective working bodies (16) so as to expand and contract synchronously, the motor being provided in an upper end portion of the working bodies (16); guides (24) arranged in right and left sides of the chair main body (2) so as to extend forward and backward, front and rear end potions thereof being supported by a pin; a rod (25) fitted to the guide (24) so as to be slidable forward and backward, a rear end portion of the rod (25) being connected to the r

Abstract: A stroller includes a bottom frame, a support frame, a rear frame, two opposite folding devices, a front frame, two pull blocks, and two pull cords. Each of the folding devices includes a main body, a socket, a slide plate, and a locking plate. Thus, the stroller can be extended and folded easily and conveniently, thereby facilitating the user utilizing and folding the stroller. In addition, the stroller can be folded efficiently so as to reduce the volume of the stroller to the minimum value, thereby facilitating package, storage and transportation of the stroller.

Abstract: A stroller has a body structure adapted to be unfolded into an unfolded state for use, and to be folded into a folded state. A handle is supported on the body structure for forward and backward turning. The handle is set in either a backward-inclined position for a back-faced pushing mode or a forward-inclined position for a front-faced pushing mode. A handle locking mechanism locks the handle in the backward-inclined position for the back-faced pushing mode via a stopping member and a back stopping projection that engages with the stopping member. When the body structure is folded and armrests are turned upwardly from a working position, the stopping projection, which is fixed to the armrest, turns relative to the stopping member and an end part of the stopping projection is located with its major axis extended perpendicularly to an axis of the handle, and with a part thereof lying in a groove.

Abstract: A novel collapsible stroller is provided. The stroller includes a handle having two arm tubes, an actuating means operablely mounted on the handle, two front leg tubes, two rear leg tubes, two connecting tubes one end of each of these tubes being pivotally coupled to one of the arm tubes respectively via a pivot locking means which is operablely connected to the actuating means via a cable so as to selectively lock/unlock the stroller and allow the handle to be folded forward and allow the stroller to collapse to a compact collapsed state with a more comfortable user posture and ergonomics way.

Abstract: There is provided a jogging stroller having a collapsible frame transformable from an erected position to a collapsed position, the frame including a base structural assembly and an upper structural assembly, the base assembly having a rear axle with a wheel coupled at each end, a fork assembly pivotally coupled thereto having two tubes extending to support a front wheel, and a pair of upright support members fixedly coupled thereto. The upper structural assembly includes a handlebar member having extending handlebar tubes, the other ends of the handlebar tubes slidably engaged with a respective interconnect member pivotally coupled to the free end of a respective upright support member, and further has two additional tubes each having first ends fixedly attached to respective interconnects and second ends connected at the front wheel to respective tubes extending from the fork assembly.

Abstract: The seat unit of a stroller includes a seat frame mounted on a stroller frame, a backrest frame unit, and a pad assembly. The backrest frame unit includes a backrest support mounted on the seat frame, and a movable frame member connected pivotally to the backrest support and pivotable from a folded position, where the movable frame member is disposed proximate to the backrest support to form a seating space adapted for seating of a baby therein, to an unfolded position, where the movable frame member extends inclinedly from the backrest support to form a reclining space adapted for reclining of the baby therein. The pad assembly includes a seat pad, a back pad and a backrest pad mounted on the seat frame, the backrest support and the movable frame member, respectively.

Abstract: The seat unit of a stroller includes a seat frame mounted on a stroller frame, a backrest frame unit, and a pad assembly. The backrest frame unit includes a backrest support mounted on the seat frame, a movable frame member connected pivotally to the backrest support and pivotable between folded and unfolded positions, and a foldable link member having opposite ends connected pivotally and respectively to the backrest support and the movable frame member. The pad assembly includes a seat pad, a back pad and a backrest pad mounted on the seat frame, the backrest support and the movable frame member, respectively.

Abstract: A child carrier includes a centrally located front wheel and two rear wheels joined by a frame assembly. The frame assembly has a hinge mechanism that permits adjustment of a handle between multiple operating positions, and easy opening and collapsing of the carrier.

Abstract: A fold flat walking or jogging stroller is disclosed, which includes at least three wheels which all include pivoting wheel support units. The wheel support units include, in various embodiments, simple manually manipulable methods to latch each wheel in the operative or stowed flat positions, which effectively allows the device to fold to a flat profile without any wheel being detached. Associated innovations include a pivoting or floating transverse axle replicating unit, which pivots and latches to replicate a typical fixed wheel axle, but conveniently pivots to a fold flat stowed position. The innovations may also be applied to miscellaneous other types of wheeled carrier devices besides strollers, such as gurneys, golf bag carriers, and hunting game carriers as several examples.

Abstract: A guard arm with a drink container holding structure is extended between front end parts of right and left armrests of a stroller to protect a baby on the stroller. The guard arm includes a flexible guide arm body connecting the front end parts of the right and left armrests, and a pair of drink container holding members formed of a comparatively hard material and connected to opposite ends of the guide arm body, respectively. The drink container holding members are detachably connected to the front end parts of the armrests, respectively. Also, the drink container holding members are provided with recesses, for receiving drink containers therein, in their upper surfaces, respectively.

Abstract: A stroller is provided with a handle having a horizontal middle part and two side pipes. The two side pipes are connected to the horizontal middle part by gear trains so as to be turnable about axes perpendicular to an axis of the horizontal middle part, respectively. A folding part operating mechanism is incorporated into the horizontal middle part of the handle. The side pipes can be folded and unfolded relative to the horizontal middle part by turning the horizontal middle part about its axis.

Abstract: This invention refers to a trailer, designed to transport at least one child, which can be attached to a stroller and which is equipped with a chassis with at least one wheel, a frame and an attachment assembly for securing the trailer to the stroller, and which is designed so that the trailer is connected to the frame of the stroller, is equipped with a seat, and is fitted with at least one handle, at least one foot rest and a coupling device consisting of an attachment assembly and a first and a second joint.

Abstract: A stroller assembly may include a frame with first and second spaced members. First and second seats may be attached to the frame. The second seat may have a seat base and a seat back, the first and second spaced members disposed opposite each other across seat base. The stroller assembly may also include at least one member disposed opposite the seat back in at least first and second positions. The seat base, seat back, spaced members and the at least one member may define at least two recesses, the first recess defined with the at least one member in the first position to accept a first infant transporter and the second recess defined with at least one member in the second position to accept a second infant transporter different than the first infant transporter.

Abstract: A portable folding wheelchair includes a front U-shaped tube and a rear U-shaped tube pivotally coupling with each other through a pin to form a X-shape. The front U-shaped tube has an upper end on two sides to fasten to a connection plate. The connection plate connects to a backrest. The front U-shaped tube has a lower section on two sides to pivotally engage with an upright tube. The upright tube and the rear U-shaped tube have an upper end bridging a sleeve. The wheelchair has a simple structure and may be folded in forward, rearward, upward and downward directions to become a smaller size to facilitate carrying or storing in a car to enable disabled people to use in travels and trips.

Abstract: A stroller includes two rear upright tubes and two assist tubes which are respectively connected to the rear upright tubes in parallel by two joint members. At least one folding assembly is connected between the two upright tubes. The rear upright tubes and the two assist tubes reinforce the structure of the stroller. Two adjusting members are mounted to the rear leg tubes and a handle is biased by torsion springs and a pin connected to the handle extends through the adjusting member so as to engage a notch defined in the rear leg tube. A backrest is pivotably connected to the adjusting members which is positioned by engaging the pin with the notch in the rear leg tubes so that the backrest can be leaned in a stable status.

Abstract: A walker having a detachable backrest is described. The walker contains a seat, and a person may sit in the walker, and rest his or her back against the detachable backrest.

Abstract: An article carrier for a baby carriage, suspended at a lower side of a carriage frame, includes a carrier body, a pair of support rods and a cover sheet. The cover sheet is movably mounted to the article carrier via the support rods so as to be able to retract or deploy to uncover or cover and shield the article carrier. When the cover sheet is deployed, the articles in the article carrier are prevented from dropping on the ground. When the cover sheet is retracted, it is easy for the user to access the articles in the article carrier.

Abstract: A backrest structure for strollers has a linkage bar to connect the frame and the backrest to enable the backrest of the stroller to be folded or anchored synchronously with the collapsing or extending of the frame. The backrest structure includes a backrest-adjusting device to provide the linkage movement and also offer multiple stage adjustment of the backrest angle.

Abstract: A stroller foldable in three includes a pair of front legs, a handle having two side parts, and first and second side connecting bars connecting the pair of front legs and lower end parts of the side parts of the handle. The first side connecting bar is provided with a hook, the second side connecting bar is provided with a loop with which the hook engages to retain the stroller in a folded state, in which the stroller is folded in three. An operating mechanism combined with the handle is interlocked with the hookby wires. The hook is disengaged from the loop by operating the operating mechanism.

Abstract: A wheelchair comprises a seat, a chair cushion covering on the seat, a footrest in front of the seat, a chair back at the back side of the seat, a back cushion covering on the chair back, two armrests at two sides of the seat, and two front wheels and two rear wheels below the seat. The height of the upper frame is adjustable by a push-and-brake device and the supporting frame. Another push-and-brake device is installed between the chair back and the footrest so that the chair back and the footrest can interact with one another. A seat and back cushion can move transversally and the back cushion can move longitudinally. An interior of the seat is hollowed so that stool can not be placed in the seat. Thereby, a multi-functional wheelchair is formed and the user has a larger space for action.