118 results about "Wheelchair Wheels" patented technology

A treadmill includes a braking device incorporated in the body of the treadmill and operated for applying a resistance or load against the rotary motion of treadmill rollers on which a wheelchair's side wheels are supported. The angle of inclination of the treadmill rollers may be adjusted according to any variation in the angle of inclination for the wheelchair wheels supported by the treadmill rollers. To this end, the user of the wheelchair can adjust the angle of inclination for the treadmill rollers. A guide member for supporting the front wheel of the wheelchair may also be included, and the guide member can be adjusted to accommodate practically all types and sizes of the wheelchair. A central control panel is provided at a particular single point on the treadmill for enabling the user of the wheelchair to control the braking device, adjust the angle of inclination, and moving the guide member.

An automated wheelchair for moving over a contact surface. The automated wheelchair includes an operator chair for seating the wheelchair operator, a control computer, an operator input device for transmitting operator inputs to the control computer, and two wheelchair wheels for propelling the wheelchair. Each wheelchair wheel includes extendable and retractable spokes. The extension and retraction of each spoke is controlled by a motor. At the ends of each spoke are contact sensor devices. The control computer is programmed to receive inputs transmitted from the contact sensor devices to generate a terrain profile. The control computer generates and sends control signals to each spoke motor in response to the operator inputs and in response to the terrain profile generated by the contact sensor devices. In a preferred embodiment the contact sensor devices are pressure sensor devices. Also in a preferred embodiment, rotatable pneumatic wheels are attached to both ends of each spoke. Preferably, a brake is applied to at least one pneumatic wheel per wheelchair wheel while the wheelchair is moving over the contact surface. Preferably, the automated wheelchair is capable of moving over a variety of contact surface types, including: a set of stairs with uniform rise to run ratio, a set of stairs with non-uniform rise to run ratio, a set of straight stairs, a set of curved stairs, over a curb or over rough terrain.

A shock absorbing suspension for the large rear wheels of a wheelchair is disclosed. A fork element is hinged at one end to a clamping member which attaches to a horizontal frame member of the wheelchair. A cylindrical solid polymer shock absorber cushions the movement of the fork element toward the clamping member. The free end of the fork element includes an axleway for the axle of a large wheelchair wheel. The movement of the fork element relative to the clamping member is limited by abutting surfaces on the fork element and the clamping member.

Disk brakes are located to the interior of the outermost extent of the space frame of the wheelchair, and are within the volume of this space frame, being most commonly under the seat of the occupant of the wheelchair. In this location the disk brakes are subject to unobstructed operation, and will in particular not be subject to detrimentally contacting the garments or covers of an occupant of the wheelchair. The disk brakes are preferably hydraulically actuated, and stabilized by a strut connecting two bearing blocks through each of which passes an associated axle shaft connecting to the hub of an associated wheelchair wheel at an outboard location, and also to a an associated disk brake rotor at an inboard location.

The invention relates to a backrest and footrest swingable electric dual-mode stair-climbing wheelchair provided with a wheelchair frame. Universal caster mounting holes and footrest mounting columns are arranged at the two bottom corners of the front of the wheelchair frame respectively, two universal casters are mounted in the universal caster mounting holes respectively, a footrest is mounted on each footrest mounting column, two wheelchair wheels driven by motors are mounted on two sides of the rear portion of the wheelchair frame respectively, mounting shaft holes of a crawler-type stair climbing device are arranged in the rear of the wheelchair frame, and connection of armrests on two sides of the upper portion of the wheelchair frame and the wheelchair frame is set in a pluggable type; connection between a backrest of the wheelchair frame and the wheelchair frame is set in a backrest front-back swingable mode. An electric or manual push-pull rod is arranged between the backrest and the wheelchair frame. An LED illuminating lamp is arranged each armrest. The wheelchair is applicable to the aged and the disabled unable to move freely, and has the advantages of scientific and reasonable structural design, stable operation, easiness in operation and security and reliability.

A wheelchair propulsion system provides a wheelchair user with a continuous input drive path of linear or elliptical shape. The propulsion system includes a Cardan gear system defining a linear reciprocating or elliptical input path over which propulsive force may be continuously applied to the wheelchair wheels. Because the input path is continuous, efficiency is increased and impact on the user's body is reduced thereby reducing discomfort and physical demands on the user's body. The angle of the input path may be altered to suit the particular needs of a user by rearrangement of the relative angular orientations of the gears in the propulsive system. The present propulsive mechanism may be integrated into a wheelchair or retrofitted to existing wheelchairs.

A wheel mount may generally be comprised of an axle plate and a camber tube clamp that may be height adjustable with respect to the axle plate. The camber tube clamp can be selectively mountable upright or inverted so as to increase an overall range of height adjustability. The camber tube clamp can be mountable in front of or behind the axle plate so as to increase an overall range of center-of-gravity adjustability. The camber tube clamp and the axle plate may have an interlocking feature that may allow the camber tube clamp to slide vertically along the axle plate to facilitate height adjustment. A seat collar can be positioned at various locations along a wheelchair frame for center-of-gravity adjustment. The axle plate can be detached from and attached to the seat tube collar to allow the axle plate and camber tube clamp to be reverse mounted in order to increase the range of center of gravity adjustment. A wheelchair suspension system according to the invention may be comprised of a swing arm and at least one elastomer. The swing arm may be adapted to support a rear wheelchair wheel and pivot about an axis substantially fixed to a wheelchair frame. The swing arm can be suspended between two of the elastomers, or be operatively connected to one elastomer so that displacement of the swing arm in either direction about the pivot causes the elastomer to compress.

The invention discloses a walking-aid wheelchair which comprises a wheelchair mechanism and a walking-aid mechanism, wherein the wheelchair mechanism is connected with one side of the walking-aid mechanism, and the other side of the walking-aid mechanism is fixed through a bolt; the wheelchair mechanism comprises a wheelchair body, wheelchair wheels, wheelchair armrests and wheelchair pushers; the wheelchair wheels are mounted at the lower part of the wheelchair body; the wheelchair armrests are mounted on two sides of the wheelchair body; the wheelchair pushers are mounted at the rear of the wheelchair body; the walking-aid mechanism comprises a walking-aid bracket, walking-aid wheels and supporting armrests; the walking-aid wheels are mounted at the lower part of the walking-aid bracket; the supporting armrests are mounted at the upper part of the walking-aid bracket. The walking-aid wheelchair realizes the dual-purpose and complementary functions of a wheelchair and a walking aid, reduces cost for a user, saves the accommodating space, is convenient to use, improves the safety performance of the wheelchair, is a convenient tool which has the dual purposes of standing and sitting, aids standing and walking, and can be ridden instead of walking, and fills the market vacancy.

A quick release detachable wheel hub assembly is shown for a lightweight manual wheelchair. The wheelchair wheels mount on exterior hubs and rotate therewith. The inner face out of each of the exterior hubs mates with an opposing outer face of interior hubs. One of the opposing faces on the hubs has a projection or a plurality of projections which fit snugly into corresponding openings on the opposing face of the other hub when the opposing faces of the hubs are mated. The interior hubs are mounted and rotate on detachable axles which screw into the wheelchair frame. A quick release, removable locking pin is inserted through the center of the hubs and into detachable axle and locked in place and thereby causing the hubs to be locked and rotate together. The wheels are quickly detached by simply removing the locking pins and pulling apart the hubs.

An improved off-road wheelchair having detachable wheelchair wheels having disc brakes, an anti-wheelie wheel and at least one detachable stability wheel.

The invention relates to a pressure ulcer prevention electric wheelchair. The pressure ulcer prevention electric wheelchair comprises a wheelchair frame, a vibration seat cushion, an air pump and a motor, wheelchair wheels are arranged at the two sides of the wheelchair frame, the vibration seat cushion is installed in the middle of the wheelchair frame, armrests are arranged at the two sides of the vibration seat cushion, one armrest is provided with control switches, a wheelchair back is arranged in the vertical surface of the wheelchair frame, the air pump is installed on the wheelchair back, the motor is installed below the vibration seat cushion, an output shaft of the motor is connected with the wheelchair wheels, the control switches are connected with the air pump and the motor respectively through a wire, and the air pump is connected with the vibration seat cushion through an air pipe. According to the pressure ulcer prevention electric wheelchair, a patient can control the electric wheelchair to walk through the control switches arranged on one armrest, compression air is introduced into the seat cushion through the air pump switch control arranged on the armrest, and is firstly intermittently delivered into an air flow chamber through an air supply packing auger, then gas is made to enter a vibration chamber by being shunted through the blocking plate, the vibration motor is driven to knock at the surface of a seat cushion bag in the irregular motion direction to massage the hip of the patient, and the patient is effectively prevented from having pressure ulcer.

The invention aims to provide a wheelchair capable of climbing stairs and applicable to disabled students and solves the technical problem that students with leg disability cannot climb the stairs when using a wheelchair. The wheelchair comprises a wheelchair body, a moving groove mechanism, a wheelchair wheel lifting hydraulic mechanism, a first lifting hydraulic mechanism, a second lifting hydraulic mechanism, a third lifting hydraulic mechanism, an advancing hydraulic mechanism, a following hydraulic mechanism, a hydraulic station and a control system and further comprises a bottoming detection antiskid device. The wheelchair has the beneficial effects as follows: through coordinative cooperation of all mechanisms, the wheelchair can climb the stairs automatically, and the technical problem that the students with leg disability cannot climb the stairs is solved.

The invention discloses a walking aid wheelchair buffering and damping mechanism which comprises a bottom plate. Side plates are arranged on the front side and the rear side of the upper surface of the bottom plate, a back plate is arranged on the left side of the upper surface of the bottom plate, a back cushion is arranged on the right side of the back plate, the right side of the bottom plate is connected with the top end of a connecting rod, the bottom end of the connecting rod is connected with a pedal, the left side of the bottom of the bottom plate is connected with the top end of a second damper, the bottom end of the second damper is connected with a fixed plate, a second damping spring is arranged on the outer side of a second damper, a rotating shaft is arranged on the bottom surface of the fixed plate, and a rear wheel is arranged on the rotating shaft and rotatably connected with the rotating shaft. The mechanism is simple in structure, reasonable in design, a buffering and damping device is arranged between a wheelchair wheel and a frame, so that vibration from the ground can be effectively relieved, vibration energy can be timely absorbed and relieved when a wheelchair drives on a rough or bumpy road, bumping and shaking amplitudes of the wheelchair in driving are effectively reduced, and the mechanism has the advantages of safety and comfort in use.

The invention discloses an electric folding wheelchair capable of going upstairs and downstairs. A wheelchair seat assembly is arranged at the upper part of a wheelchair underframe assembly in a liftable mode through a wheelchair seat ascending and descending assembly, and a wheelchair wheel assembly and a wheelchair upstairs and downstairs going assembly are arranged on the wheelchair underframeassembly, wherein the wheelchair seat assembly consists of foldable armrests, a foldable backrest and a translational wheelchair seat plate which are connected with each other; the wheelchair seat ascending and descending assembly is of a shear fork mechanical structure; the upper end of the shear fork mechanical structure cooperates with the bottom of the wheelchair seat assembly; the lower end of the shear fork mechanical structure cooperates with the wheelchair underframe assembly; the wheelchair wheel assembly consists of a front wheel driving motor, a rear wheel driving motor, wheelchairfront wheels driving by the front wheel driving motor and wheelchair rear wheels driven by the rear wheel driving motor; and the wheelchair upstairs and downstairs going assembly consists of front auxiliary wheels, rear auxiliary wheels, a big motor and a power transmission mechanism of the big motor. The electric folding wheelchair provided by the invention can be folded; the space is saved; in addition, the seat can freely translate, ascend and descend; the function of going upstairs and downstairs is achieved; and safety and reliability are realized.

The invention discloses an automatic cleaning device for wheelchair wheels. The device comprises an upward moving bevel, and a cleaning platform which is connected with the upward moving bevel, wherein wheels can enter and leave the cleaning platform through the upward moving bevel; a first rotating rod and a second rotating rod are arranged in parallel on the cleaning platform and are in the direction vertical to the rotating directions of the wheels; a cleaning groove is formed between two ends of the first rotating rod and the second rotating rod; a driving mechanism for driving the first rotating rod and the second rotating rod to rotate is arranged on the cleaning platform. The device consists of the upward moving bevel and the cleaning platform, and is simple and compact in structure, and convenient to operate; the first rotating rod and the second rotating rod can drive the wheelchair wheels to rotate in 360 degrees, and the cleaning groove is matched, so as to comprehensively and effectively clean the wheels; in addition, the safety is high. The automatic cleaning device needs a small space, is applicable to various sites, and is high in practicability and worthy of popularization in the industry.

The present invention relates to a manual wheelchair wheel, and in particular, to a manual wheelchair wheel with a built-in geared hub through which the speed of a forward or reverse driving force is shifted and said driving force is transferred, and which has an anti-reverse function, wherein the wheel is light and can easily replace existing wheelchair wheels. The wheel comprises: a central shaft having an axial direction hole and a radial direction through-hole and installed so as to not rotate with respect to the frame of the wheelchair; an input member supported on the central shaft and coupled to and rotated together with a handrim; an output member supported on the central shaft and coupled to and rotatable together with the wheel; a planetary gear column including a plurality of planetary gears installed on either the input member or output member, at least one sun gear engaged with a planetary gear, and a ring gear installed on the other one of the input member and output is member and engaged with a planetary gear; at least one shifting clutch enabling or preventing the rotation of the sun gear; a lock-up clutch enabling the input member and the output member to be coupled together and rotate in concert or be disengaged and rotate freely with respect to one another; and a shifting cam rotatably installed in the axial direction hole of the central shaft in order to control the operation of the shifting clutch and the lock-up clutch, wherein a different clutch operates according to the rotating direction/position of the shifting cam to shift between two or more gears and transfer forward and reverse driving force from the handrim to the wheel.

The invention provides a multifunctional toilet wheelchair. The multifunctional toilet wheelchair comprises a wheelchair frame, wheelchair wheels, a brake device, a wheelchair surface, a wheelchair back, limiting pieces and a protective table. The wheelchair frame comprises four height-adjustable hollow supporting columns perpendicular to the ground. The supporting columns comprise the two front supporting columns and the two rear supporting columns. The number of the wheelchair wheels is four, the wheelchair wheels comprise the two front wheels and the two rear wheels, and the wheelchair wheels are fixed to the four supporting columns respectively through connecting shafts. The brake device is connected with the two rear wheels. The wheelchair surface is arranged on the wheelchair frame and provided with a toilet hole. The wheelchair back is hinged to the two rear supporting columns. The limiting pieces are fixed to the two rear supporting columns through bolts to limit the angle formed between the wheelchair back and the wheelchair surface. The protective table is detachably fixed to the two front supporting columns and comprises a tabletop and mobile armrests arranged on the two sides of the tabletop.