CN2160376Y - wheelchair drive - Google Patents

Abstract

The wheelchair driving device is a driving device for a movable wheelchair, which is a living appliance for the disabled. The device includes a ratchet brake group, a screw lock disc, a driving disc and a sleeve disc. It is installed on the wheelchair wheel to enable the wheel to have a one-way rotation function. The driving disc can be rotated by hand directly or by shaking the modified armrest auxiliary rocker to rotate the driving disc to push the wheelchair. It is easy to operate and reduces physical exertion.

Description

The wheelchair driving device is a driving mechanism of a movable wheelchair and belongs to a living appliance for the disabled.

The structure of existing wheelchairs pays more attention to the improvement of the seat comfort, the reduction of the weight of the wheelchair, the reduction of the storage space, and the change of the appearance, and often does not consider the general hand inconvenient to swing a lot or the hand is weak. In addition, in terms of wheelchair driving, every time the wheelchair wheel is pushed forward, it is necessary to frequently change the position of the hand to grasp the wheelchair wheel to continue to move forward. People themselves are relatively weak and often overwhelmed by the load, which causes countless troubles for the disabled. Even some disabled people want to move faster or run long distances. The grip of the hand and the swing of the arm need to match the speed of the wheel. The wheelchair handle is used to promote and control the wheelchair, which can easily cause excessive physical exertion. In addition, when pushing forward, when encountering a protruding obstacle on the road, the wheelchair needs to go around and advance, sometimes stagnant in front of the obstacle; If the physical strength is excessively exhausted due to the need to quickly turn the wheelchair to meet the competition, it will cause powerlessness and affect the performance, which will often affect the self-confidence of the disabled.

The purpose of the utility model is to provide an improved wheelchair driving device, which does not affect the structure of the original wheelchair, and the wheelchair installed with the driving device is easy to use and saves physical strength.

The purpose of this utility model is achieved in that a screw lock disc, its covering surface is provided with several radially equidistant clamping blocks, and the clamping blocks wear steel wires and are connected with tire rims. The screw-lock disk is pivotally connected with the ratchet brake group through the pivot shaft, and the ratchet brake group is covered and crimped by the sleeve disk to form a unidirectional rotating part, and the sleeve disk and the drive disk are fixed by bolts. An annular pushing handle ring is protrudingly arranged around the driving disc, and a slot hole for a thumb is provided on the inner side of the ring. In addition, slots with equal arcs and staggered diameters are set on the driving disc and the corresponding fitting disc for inserting the auxiliary rocker of the armrest. The armrest seat is fixed in the middle of the rocker, and a right-angled bend is formed on the upper part. The lower part of the armrest is protrudingly provided with two parallel inserting round rods at right angles to the straight rods, which can be directly inserted into the corresponding slots of the driving disc. When in use, the user can push the wheelchair as long as he sits and turns the driving disk on the middle driving device of the two wheels of the wheelchair by hand. Since the ratchet brake group and the sleeve disk rotate in one direction relative to each other, turning forward by hand, both If the wheelchair does not rotate relative to each other, the wheelchair will move forward. When returning back, the two will rotate relative to each other, and the wheels will not move. After returning and turning forward, the wheelchair will move forward again. Repeatedly push the wheelchair forward in this way. Drive the disc and turn the other disc. If the handicapped is not suitable for large swings or the hands are weak, the armrest can also be used to assist the rocker. Just insert the parallel inserted round rod of the rocker into the slot of the drive disc, and shake the armrest to push the wheelchair forward. When changing the direction, you only need to fix one rocker and shake the other rocker to change the direction. The driving device is suitable for installing any wheelchair, and is easy to assemble without hindering the shape and structure of the original runner. When in use, it can reduce the arm swing when moving and reduce the physical exertion of holding and placing the wheelchair wheel handle. It has the characteristics of light operation and reduced physical exertion. features.

Refer to accompanying drawing below for further description:

Fig. 1 is the three-dimensional structural diagram of the present utility model.

Fig. 2 is a partial structural diagram of the utility model.

Fig. 3 is a schematic diagram of an embodiment of the utility model.

Fig. 4 is a schematic diagram of another embodiment of the utility model.

Referring to Fig. 1 and Fig. 2, the utility model is made up of ratchet brake group 1, screw lock disc 2, drive disc 3 and sleeve disc 4. The driving disc 3 is surrounded by an annular ring 33 protrudingly around it. Several equal-arc-diameter circular force-applying slots 31 are provided on the inner side of the annular handle 33 of the driving disc 3 , and an equal-arc-diameter is provided on its bearing part 34. The slot holes 36 and screw holes 35 of the staggered insertable armrest auxiliary rocker 5 will drive the disc 3 through the bolts 32 and the screw holes 35 on the drive disc 3 and the corresponding screw holes 41 on the sleeve disc 4 . It is fixed on the sleeve disc 4. The fitting disc 4 is formed by covering and crimping with the ratchet brake group 1, and the fitting disc 4 corresponds to the slot 36 on the driving disc 3 to provide slots 42 of equal arcs and staggered insertable armrest auxiliary rocker 5. The ratchet brake group 1 is pivotally connected to the screw lock disc 2 through a pivot 12 . The cover of the screw lock disk 2 is provided with several radial equidistant clamping blocks 21 to surround, and screw holes 23 are set on the wall of the clamping block 21 to penetrate the slot 22 of the clamping block 21, and the wheelchair steel wire 6 is locked and clamped by the slot 22 of the clamping block 21 , and fixed with bolts. The armrest auxiliary rocker 5 is a straight bar 51, and an armrest cushion 55 is fixedly installed on its end face, and a handhold portion 52 formed at a right angle is bent on its upper part, and two parallel bars at right angles to the straight bar are protruded from its lower part. Insert round rods 53, 54 for inserting in the slotted holes 36 provided by the drive disc. During use, the driving device is installed on both sides of the wheelchair. When the ratchet brake group 1 rotates clockwise in one direction, its pole 12 is smoothly between the tooth holes 11 of the ratchet brake group 1. The spring 13 returns the strut 12 to its original position, and then repeats the above-mentioned steps to form idling. When rotating counterclockwise, the pole 12 is inserted into the toothed hole 11 of the clamping ratchet brake group 1 to rotate and drive the disc 3 . The ratchet brake groups 1 installed on both sides of the wheelchair are designed with reversed interlocking tooth holes 11, which can make the runners rotate in one direction and push continuously, so the user only needs to rotate the wheels on the two sides in one direction. Drive the disc 3, or grasp the ring-shaped ring 33 fixed place of the drive disc 3, you can continuously push the wheelchair, or by means of the force-applying circular slot 31 arranged on the drive disc 3 with an equal arc-radius distance, fit the thumb Rotate this driving disc 3, you can move quickly. If it is necessary to change the moving direction, it is only necessary to hold and press the ring 33 of the driving disc 3 on the side where the direction is to be changed, and turn the driving disc 3 on the other side to change any direction. If the user's own arm is not suitable for operating a large swing posture, the armrest auxiliary rocker 5 of the original wheelchair can be removed, and the two parallel inserting round rods 53, 54 provided by the armrest auxiliary rocker 5 are inserted into the drive disc 3 bearings. In the slot 36 opened at the top, an auxiliary armrest rocker 5 is formed. The user sits on the wheelchair seat and can move by shaking the auxiliary armrest rocker 5. When changing the direction, grasp the armrest rocker 5 to change direction. Shake the other handrail rocker 5 to change any direction. In addition, cooperate with the gear hole 11 of the ratchet brake group 1 to select a ratchet assembly suitable for indoor, outdoor or general outdoor activities.

Fig. 3 is a wheelchair equipped with a wheelchair driving device. To propel the wheelchair, simply turn the drive disc.

Fig. 4 is another kind of wheelchair that wheelchair driving device is housed. When pushing the wheelchair, turn the drive disc on one side and shake the armrest rocker on the other side. If you want to change direction, just turn one side of the drive disc.

Claims (3)

1, a kind of wheelchair drive mechanism, comprise driver plate (3) and screw lock disk (2), it is characterized in that being arranged in wheel screw lock disk (2) articulates by pivot (12) and ratchet braking group (1), ratchet braking group (1) is formed the one-directional rotation parts with fit disk (4) the cover combined pressure type that is connected into, fit disk (4) such as is provided with at the directly staggered screw (41) of arc, the corresponding fit disk of bearing portion (34) (4) of driver plate (3) is gone up screw (41) and is provided with screw (35), bolt (32) is fixed in driver plate (3) on the fit disk (4) by screw (35) and screw (41), driver plate (3) peripheral process be provided with annular circle (33) around, annular is offered circular application of force slotted eye (31) such as footpath such as several arcs such as grade to circle (33) inboard;

2, according to the described wheelchair drive mechanism of claim 1, it is characterized in that driver plate (3) bearing portion (34) the directly staggered slotted eye (36) of arc such as offers, the last corresponding driver plate (3) of fit disk (4) is gone up slotted eye (36) and is offered slotted eye (42), slotted eye (36) and slotted eye (42) are for the auxiliary rocking bar (5) of intercalation one handrail, it is a straight-bar that handrail is assisted rocking bar (5), its end face is provided with armrest pad (55), its top is curved establish that a rectangular camber constitutes hold up the portion of holding (52), the bottom is prominent establish two with the meet at right angles parallel round bar (53) of formation of straight-bar, (54);

3, according to the described wheelchair drive mechanism of claim 1, it is characterized in that screw lock disk (2) one end faces be equipped with fixture block (21) be radial equidistantly around, the line of rabbet joint (22) is offered in fixture block (21) stage casing, offer screw (23) at fixture block (21) wall and run through this line of rabbet joint (22), the line of rabbet joint (22) intercalation wheelchair steel wire (6) is locked with bolt.

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