36 results about "Wheelchair brakes" patented technology

The present automatic wheelchair brake device invention includes a brake mechanism adapted to be installed on an existing collapsible wheelchair. The brake mechanism may be adapted to be operably installed on only one side of a frame of the collapsible wheelchair such that a side-to-side collapsibility of the frame of the collapsible wheelchair is significantly unimpeded by the brake mechanism. The brake mechanism may be movable between an engaged position that generally inhibits rolling movement of the wheelchair and a disengaged position permitting free rolling movement of the wheelchair in response to movement of structure on the one side of the frame of the collapsible wheel chair between a first position when the wheelchair is occupied and a second position when the wheelchair is unoccupied.

Improved handles are provided for a wheelchair brake lever and legrest release lever of a wheelchair. Each handle has a first end with a slot for receiving the respective lever, and a second end extending angularly from the first end so as to be nonplanar and noncoaxial with the respective levers. The handles include ribs or textured surfaces for improved tactile feel, and are made of brightly colored material for high visibility. Increased size, feel and visibility of the handles make them easier to locate for a person sitting in the wheelchair.

The invention relates to the technical field of wheelchair detection, and particularly discloses a wheelchair brake detection device. The wheelchair brake detection device comprises a base. A wheel drive mechanism comprises a supporting plate. Rotating shafts penetrating through the supporting plate are arranged at the two ends of the supporting plate. The two ends of each rotating shaft are respectively provided with a rotating roller. Drive belts are arranged between the rotating rollers in a sleeved mode. A supporting rod positioning base is arranged on the base. A supporting rod can slide in the supporting rod positioning base up and down. A rotatory table is arranged in the supporting rod positioning base. The center of the rotatory table and the axis of the supporting rod are eccentric. The upper end of the supporting rod and the supporting plate are connected in a sliding mode. The top surface of the rotary table is divided into a reference surface, an uphill surface and a downhill surface in the circumferential direction. A motor, a wheelchair positioning support and a wheelchair positioning base are arranged on the base. A brake drive mechanism is arranged on one wheelchair armrest. Accordingly, the wheelchair brake detection device has the advantages that a brake of a wheelchair can be accurately tested and evaluated no matter what driving state the wheelchair is, the risk of the wheelchair is reduced, and the performance of the brake is improved.

The invention discloses a wheelchair brake. The wheelchair brake comprises a shell and a handle, wherein a rotatable pull disc and a lock disc are arranged in the shell; a plurality of slide tooth heads are arranged on the edge of the lower surface of the pull disc in the peripheral direction; a Z-shaped wiring notch is formed inside a pulling main body; a plurality of lock tooth heads are arranged on the edge of the upper surface of the lock disc in the peripheral direction; and the lock tooth heads are matched with the slide tooth heads. After a user releases the handle, the pull disc cannotbe rotated and restored since the slide tooth heads are clamped in the lock tooth heads, and the handle is clamped in the current locking position. The wheelchair brake is safe and reliable, and caneffectively prevent a wheelchair from sliding unexpectedly.

The invention discloses a high toughness health care wheelchair brake handle sheath and a preparation method thereof. The preparation method comprises the steps of: 1) mixing polyurethane resin, polyvinyl chloride resin, a poe elastic toughening agent, ceramic fiber, glass fiber, bamboo charcoal fiber, tricresyl phosphate, dioctyl phthalate, glycerol, turpentine and a silane coupling agent with a mark of KH550, and then performing first kneading to obtain a mixture M1; 2) adding titanium oxide, an antistatic agent, light protein shale powder and silver nanoparticles into the mixture M1 and conducting second kneading to obtain a mixture M2; and 3) carrying out extrusion molding and processing on the mixture M2 so as to obtain the high toughness health care wheelchair brake handle sheath. The high toughness health care wheelchair brake handle sheath has high strength, good toughness and other excellent mechanical properties, also has health care and antibacterial functions, further ensures the wheelchair users' physical and mental health, and improves the wheelchair use comfort.

The invention discloses an intelligent braking method and system for a wheelchair. According to the intelligent braking method and system for the wheelchair, a braking device is controlled to start braking after a braking instruction is received; whether the acceleration of the wheelchair is smaller than the acceleration of the wheels of the wheelchair is judged; and if the acceleration of the wheelchair is smaller than the acceleration of the wheels of the wheelchair, intermittent braking is executed with a set braking frequency. An inertial measurement device is installed on the wheelchair to measure the acceleration of the wheelchair; odometers are installed on the wheels of the wheelchair to measure the acceleration of the wheels of the wheelchair; when a user operates a brake controlto issue a braking instruction, a braking control module controls the braking device to perform braking, and whether the acceleration of the wheelchair is smaller than the acceleration of the wheels of the wheelchair is judged; if the acceleration of the wheelchair is smaller than the acceleration of the wheels of the wheelchair, it is indicated that the wheels decelerate quickly and the wheelchair itself decelerates slowly, such kind of condition most likely causes slip; intermittent braking is executed with the set braking frequency, so that a braking force can be controlled with the wheelsnot locked; and therefore, the slip can be avoided, the occurrence of dangers can be avoided, and the technical problem of a slip hidden hazard in the braking process of an existing wheelchair brake system can be solved.

A wheelchair brake system comprises: a brake which is provided in a wheel of a wheelchair; and a brake actuation controller which connects with the brake and locks and releases the brake, wherein the brake is usually in a lock mode, but the brake actuation controller controls the brake to be switched over from the lock mode to a release mode if sensing that a user sits down on the wheelchair or the wheelchair is folded up.

The invention relates to a device for testing the performance of a wheelchair driving brake, and belongs to the technical field of brake performance testing. The device comprises a test platform frame, a test platform, a digital display angle measuring instrument, an ultrasonic baffle plate, an air spring, a triangular supporting frame of the air spring, a wheelchair to be tested and an ultrasonic range finder, and is characterized in that the test platform is connected with the bottom of the test platform frame through a rotating shaft, the digital display angle measuring instrument is fixed at the bottom of the test platform frame, the ultrasonic baffle plate is arranged at the bottom end of the test platform, the front part of the test platform is connected with the test platform frame through the air spring and the triangular supporting frame thereof, and the ultrasonic range finger can be fixed on the wheelchair. The device can complete performance testing for the wheelchair driving brake according to requirements of the national standard.

The invention discloses a die for a brake base of an electrically-propelled wheelchair. The die comprises a movable die plate, a fixed die plate capable of cooperating with the movable die plate, a movable die seat fixedly arranged at and connected with the bottom of the movable die plate and an ejection mechanism arranged between the movable die plate and the movable die seat, capable of going up and down between the movable die plate and the movable die seat and used for demolding; and the die further comprises a nozzle used for injecting liquid wax. According to the invention, based on the structural characteristics of the brake base needing wax injection of the electrically-propelled wheelchair, a movable die and a fixed die which are mutually cooperated and can form a cavity with a same shape as the part of the brake base needing wax injection of the electrically-propelled wheelchair are designed; and the die provided by the invention has a simple structure, is convenient to operate and enables a high-precision wax mould for the brake base of the electrically-propelled wheelchair to be obtained.

The invention discloses a novel wheelchair braking and parking control device, and particularly relates to the technical field of wheelchairs. The novel wheelchair braking and parking control device comprises a wheelchair support and a tire, wherein the tire is arranged on one side of the wheelchair support; a supporting plate is fixedly arranged on the rear side of the front end of the wheelchair support; a shell is arranged on one side, which is close to the tire, of the supporting plate; a parking control shifting sheet and a braking and parking shifting sheet are arranged in the shell; and the parking control shifting sheet is located on the top of the braking and parking shifting sheet. Through rotation of the parking control shifting piece, a positioning tooth and a positioning groove on the braking and parking shifting piece are clamped and fixed, the braking and parking shifting piece is extruded while the positioning tooth and the positioning groove are clamped and fixed, so that the lower end of the braking and parking shifting piece moves to the direction of the tire and is contact with the tire, and the tire achieves a parking effect. Since the positioning tooth and the positioning groove are matched according to the principle of engineering mechanics, after the positioning tooth and the positioning groove are clamped, no matter when the tire moves forwards or backwards, the braking and parking shifting piece can not move along with the tire.

The invention discloses an electric wheelchair capable of assisting a patient in getting into bed or getting out of bed. The electric wheelchair includes a frame, wheels, armrests, push handles, brakedevices, pedals, a cushion and a backrest; the left and right sides of the frame are symmetrically arranged, the wheelchair wheels are mounted at the two sides of the wheelchair frame, the wheelchairarmrests are mounted at the two sides of the wheelchair frame, the wheelchair push handles are mounted on the upper rear portion of a wheelchair body, the wheelchair brake devices are arranged belowthe wheelchair push handles, the wheelchair push handles serve as force applying handles, wheelchair reduction handles have the functions of wheelchair parking braking, the wheelchair cushion is horizontally mounted on the wheelchair frame, and the wheelchair backrest is vertically mounted on the wheelchair frame, wherein the wheelchair backrest and the wheelchair frame form a caster angle of 10-15 degrees; the wheelchair pedals are mounted in front of the front wheelchair wheels. The electric wheelchair capable of assisting the patient in getting to bed or getting out of bed achieves the dual-purpose functions of integrating and complementing the wheelchair body and a walking aid, has the advantages of being simple in structure, low in weight and cost, convenient to carry and the like andhas triple-purpose functions of standing, sitting and walking.