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.

An automatically engageable and releasable brake apparatus adaptable to be attached to a wheelchair is provided, including a connection mechanism adapted to be positioned on a rear frame portion of the wheelchair frame, a seat actuation member adapted to be positioned on the wheelchair seat, a brake actuating member coupled to the connection mechanism and in fluid communication with the seat actuation member defining a closed fluid system therewith, and a brake member coupled to the brake actuating member and adapted to contact a ground surface on which the wheelchair is located. Occupational ingress into the wheelchair causes fluid to flow from the seat actuation member to the brake actuating member, which causes the brake member to move from a first position in substantial contact with the ground surface on which the wheelchair is located to a second position spaced a distance above the ground surface.

A brake attachment apparatus is provided for a wheelchair and includes a wheelchair connector assembly for connecting to the wheelchair, a brake operator arm which extends horizontally along a portion of the wheelchair, a brake operator arm hinge connected to the wheelchair connector assembly for connecting the brake operator arm to the wheelchair connector assembly, and a wheel brake member connected to the brake operator arm. When a patient rises from a sitting position in the wheelchair or is in a standing position and sits down in the wheelchair, the patient exerts downward pressure on the brake operator arm, and that downward pressure is transmitted to the wheel brake member for applying braking pressure on the wheels of the wheelchair to prevent the wheelchair from moving.

An automatically engageable and releasable brake apparatus adaptable to be attached to a wheelchair is provided, including a connection mechanism adapted to be positioned on a rear frame portion of the wheelchair frame, a seat actuation member adapted to be positioned on the wheelchair seat, a brake actuating member coupled to the connection mechanism and in fluid communication with the seat actuation member defining a closed fluid system therewith, and a brake member coupled to the brake actuating member and adapted to contact a ground surface on which the wheelchair is located. Occupational ingress into the wheelchair causes fluid to flow from the seat actuation member to the brake actuating member, which causes the brake member to move from a first position in substantial contact with the ground surface on which the wheelchair is located to a second position spaced a distance above the ground surface.

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 present invention is an apparatus for securing a wheelchair brake handle extension to a wheelchair when the brake bandle extension is not in use. The invention has an aperture that allows the invention to be placed onto an existing brake handle. The invention fits securely onto the brake handle and allows a portion of the brake handle to extend beyond the top portion of the invention. A brake handle extension can then be placed onto the exposed portion of the brake handle and the brake can be actuated via the brake handle extension When the brake handle extension is not in use, the brake handle extension can be stored in the hook of the invention by frictional engagement with the inside of the hook.

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.

A wheelchair braking device providing a braking action that automatically disengages when an occupant is seated in the wheelchair. The braking device includes a support structure to which a sensing lever is pivotably mounted and to which a braking arm is slidably mounted. A biasing element is coupled to the braking lever to bias the braking arm in a first direction relative to the support structure and into engagement with a wheel of the wheelchair, thereby inhibiting rotation of the wheel. The sensing lever and braking arm are interconnected such that the biasing element operates through the braking arm to bias the sensing lever in an upward direction against the wheelchair seat. The interconnection between the sensing lever and braking arm causes the braking arm to disengage from the wheel when the sensing lever rotates in a downward direction.

The invention provides an electrically powered wheelchair brake control system which is suitable for the technical field of wheelchairs. The electrically powered wheelchair brake control system comprises a signal detection module, a forward control module, a reverse control module and a motor driving module, wherein the signal detection module is used for detecting shifting force and a loosening state of a controller and transmitting a force signal; the controller is connected with a first loop circuit, a second loop circuit and the signal detection module through a control chip, the first loop circuit is used for controlling output of a forward voltage signal, and the second loop circuit is used for controlling output of a reverse voltage signal; the forward control module is used for outputting a high level as a control signal for forward rotation according to the force signal; the reverse control module is used for outputting a low level as a control signal for reverse rotation when the controller is loosened or is shifted; the motor driving module is used for driving a motor to perform forward rotation or reverse rotation. The invention further provides an electrically powered wheelchair. Therefore, the brake is more efficient, and certain sliding distance after braking is shortened.

The invention relates to the technical field of wheelchairs and discloses a wheelchair brake. The wheelchair brake comprises a rocker (1), a fixed piece (2), and a connecting piece (7) connecting the rocker (1) with the fixed piece (2), wherein both the rocker (1) and the fixed piece (2) are fixedly connected to a sliding block (3), the sliding block (3) is connected to a fixed base (4) in a slidable mode, a brake block (5) is connected to the fixed piece (2) in the direction perpendicular to the fixed piece (2), and an anti-pinch cover (6) is connected between the rocker (1) and the fixed piece (2); the anti-pinch cover covers the fixing points of the fixed piece, the rocker and the anti-pinch cover in the width direction to prevent articles such as clothes from being clamped in gaps between the rocker, the fixed piece and the sliding block.

The invention discloses a wheelchair brake and relates to the field of wheelchair parts. The wheelchair brake comprises a brake hand-held handle 1, a brake fixing clamp 4 and a brake shoe 5, wherein the surface of the brake shoe 5 is knurled; a front and back adjusting rod 2 is arranged on the brake and is used for adjusting the distance between the brake shoe 5 and a wheel; the distance between the adjusting rod 2 and the brake shoe 5 is adjusted through a front and back adjusting bolt 3; the brake hand-held handle 1 is connected with the brake shoe 5 through a brake axle sheet 6. By a lever principle, labor is saved during brake. The wheelchair brake can prevent the brake from sliding, labor is saved when the brake is used, and the wheelchair brake is simple in structure and easy to manufacture.

The invention discloses a multifunctional wheelchair brake. The wheelchair brake comprises a shell and a handle; a rotatable pulling disc and a locking disc are arranged in the shell; a plurality of sliding tooth heads are arranged on the edge of the lower surface of the pulling disc in the circumferential direction, a Z-shaped threading notch is formed in the pulling body, a plurality of lockingtooth heads are arranged on the edge of the upper surface of the locking disc in the circumferential direction, and the locking tooth heads are matched with the sliding tooth heads. After a user loosens the handle, due to the fact that the sliding tooth heads are embedded in the locking tooth heads, the pulling disc cannot rotate to reset, the handle is clamped at the current locking position, thewheelchair brake is safe and reliable, and accidental sliding of a vehicle is effectively prevented.

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 present invention relates to a fall prevention safety wheelchair brake device, and more particularly, in a wheelchair having a safety bar for preventing a safety accident due to a fall while moving the wheelchair, to a fall prevention safety wheelchair brake device in which a brake is locked when the safety bar is not fastened, and the brake is switched from a locked state to an unlocked state when the safety bar is fastened.

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.

The invention discloses a wheelchair brake system which comprises an upper shell, a lower shell and a brake device, the upper shell comprises an upper shell bottom plate, the two sides of the upper shell bottom plate are each provided with an upper shell side plate, and the upper shell side plates are each provided with a through sliding notch; the lower shell is rotatably connected with the upper shell, the lower shell comprises a lower shell bottom plate, two sides of the lower shell bottom plate are respectively provided with a lower shell side plate, and each lower shell side plate is provided with an inclined locking bayonet; the traction assembly is arranged between the upper shell and the lower shell in a turnover manner, and the traction assembly comprises a sliding screw rod; wherein the lower shell is located between an opening position and a closing position, and when the lower shell is located at the closing position, the sliding screw penetrates through the sliding notch and the locking bayonet at the same time. Due to the adoption of the pedal-controlled parking structure, the parking device is convenient to mount, simple to operate, safe and reliable.

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.

An embodiment includes a brake lever, a caliper brake, brake cable, and mounting bracket which mounts the caliper brake so that a wheelchair user's assistant can control the wheelchair wheel yet does not interfere with propulsion of the wheelchair by the user by rotating the wheelrim. One embodiment bracket has integral construction with a flange for connection to the wheelchair, a web, and a shoulder for connection to the caliper brake.

The invention discloses a wheelchair brake assisting device which comprises a shell. A pair of cover plates, wherein the cover plates are detachably arranged on the two end surfaces of the shell; a locking assembly is detachably arranged in the shell, and the locking assembly comprises a pair of racks which can rotate relative to each other; a positioning assembly is arranged between the racks in a sliding manner; wherein the locking assembly is located between a locking position and an unlocking position, when the locking assembly is located at the locking position, the positioning assembly is locked, and when the locking assembly is located at the unlocking position, the positioning assembly can freely slide. Due to the fact that the wheelchair brake is of a separated structure, the wheelchair brake is particularly suitable for modification of a common wheelchair, and the common wheelchair can also enjoy the brake keeping function.

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 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.

The invention discloses an electrically powered wheelchair braking device adopting a brushless direct current motor. The braking device comprises a controller. A motor output end of the controller is connected with three normally open contacts of the braking device. A brake output end of the controller is connected with a 24 V direct current coil of the braking device. Three common contacts of the braking device are connected with the brushless direct current motor of an electrically powered wheelchair. The three common contacts are connected with the normally open contacts or normally closed contacts under the driving of an armature. Specifically, the three common contacts are connected with the normally open contacts when the 24 V direct current coil is electrified, and connected with the normally closed contacts when the 24 V direct current coil is not electrified. The three normally closed contacts of the braking device are electrically connected. The braking device has the advantages of being simple in structure, small in size and low in cost, and can be conveniently used by special populations.

The present invention relates to a wheelchair brake assembly comprising a seat brake system and a wheel frame brake system. The seat brake system and the wheel frame brake system are separable from each other. The seat brake system comprises a caregiver brake lever and an actuating member, the caregiver brake lever being coupled to the actuating member. The wheel frame brake system comprises a brake transmission assembly, a first brake mechanism and a second brake mechanism which are adapted to be provided on a first wheel and a second wheel of the wheelchair respectively. The brake transmission assembly is coupled to the first brake mechanism and the second brake mechanism. The brake transmission assembly comprises an actuating lever having a first free end and a second end. The second end is coupled to the first brake mechanism and the second brake mechanism. The actuating lever is rotatable about an axis perpendicular to the longitudinal extension of the actuating lever and located between the first free end and the second end of the actuating lever, wherein the actuating member is adapted to operate on the first free end of the actuating lever to cause the actuating lever to rotate.

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.