CN211095390U - Safety wheelchair capable of preventing forward and backward tilting - Google Patents

Abstract

The utility model discloses a can prevent safe wheelchair that preceding, hypsokinesis turned over, including wheelchair frame, front wheel and rear wheel, be provided with handrail and back on the wheelchair frame, still including preventing the device that turns over after, the device includes link, support and gyro wheel one, the link slope sets up, and its one end links to each other with the frame, and the other end of link is located to gyro wheel one, gyro wheel one is located the rear of rear wheel and both bottoms flush. The utility model discloses a set up balancing unit, gyro wheel two can roll out the wheelchair forward to be located the supporting role of realization wheelchair front side that the relative the place ahead position of front wheel can be better, the pouring weight can be backward inclined with frame and the holistic center of people simultaneously, prevents that the people downhill path from driving the wheelchair and turning over in the twinkling of an eye when leaning forward, realizes preventing the problem of tumbling before. The wheel chair is provided with the backward overturning preventing device, the first roller is located behind the rear wheel, the bottoms of the first roller and the second roller are flush and extend out of the wheel chair, so that the contact area between the wheel chair on the rear side and the ground is larger, and the wheel chair is prevented from continuously toppling backwards.

Description

Safety wheelchair capable of preventing forward and backward tilting

Technical Field

The utility model relates to the technical field of wheelchairs, in particular to a safe wheelchair capable of preventing forward and backward tilting.

Background

Currently, wheelchairs are important tools for rehabilitation, not only for physically disabled persons and mobility-impaired persons, but more importantly for them to perform physical exercises and participate in social activities with the aid of wheelchairs. The common wheelchair generally comprises a wheelchair frame, wheels, a brake device and a seat back.

Since most users of wheelchairs are elderly people or people with mobility disabilities, the wheelchairs are likely to tip over backward when the wheelchair is used improperly. In addition, when the wheelchair is going downhill, the center of gravity is liable to tilt forward, so that the wheelchair is liable to tip over forward, which poses a safety hazard to the rider.

In order to solve the problems, the scheme is developed accordingly.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model aims to overcome the defects of the prior art and provide a safety wheelchair which can prevent the front and rear tipping through arranging a balancing device to cooperate with a rear tipping prevention device.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a can prevent safe wheelchair that preceding, hypsokinesis turned over, includes wheelchair frame, front wheel and rear wheel, is provided with handrail and back on the wheelchair frame, still includes and prevents the device that turns over after, the device includes link, support and gyro wheel one, the link slope sets up, and its one end links to each other with the frame, and the other end of link is located to gyro wheel one, gyro wheel one is located the rear of rear wheel and both bottoms flush, the support is located between frame and the link, the bottom of frame still is equipped with prevents the balancing unit that leans forward, but the device includes the bull stick of rotation, the pouring weight of being connected with bull stick one end, the gyro wheel two of being connected with the bull stick other end, and the distance of gyro wheel two and bull stick axle center is greater than the distance of pouring weight and bull stick axle center, the bottom plate of gyro wheel two is higher than the rear wheel bottom.

Preferably, the balancing device further comprises a motor, the motor is arranged in the middle of the frame, and the output end of the motor is connected with the rotating rod.

Preferably, when the second roller rotates to the front side of the frame along with the rotating rod, the second roller is positioned in front of the front wheel in the horizontal direction, and the weight is positioned on the rear side of the frame.

Preferably, the weight has a mass of 10kg-20kg and is arranged to tilt the centre of the vehicle frame and the person together in use.

Preferably, the support is connected with the upper part of the connecting frame, an acute angle is formed between the support and the connecting frame, the support consists of an upper part and a lower part, the upper part and the lower part are a first support and a second support, and a buffer spring is arranged between the first support and the second support.

Preferably, a support plate is arranged on the front side of the frame, and a limiting plate capable of overturning in the vertical direction is hinged to the top of the support plate.

(III) advantageous effects

After the technical scheme is adopted, compared with the prior art, the utility model, possess following advantage: the utility model relates to a can prevent safe wheelchair that preceding, hypsokinesis turned over, through setting up balancing unit, gyro wheel two can forward roll-out wheelchair to be located the supporting role of realization wheelchair front side that the relative the place ahead position of front wheel can be better, the pouring weight can be backward tilted with frame and the holistic center of people simultaneously, prevents that the people downhill path from driving the wheelchair and turning over in the twinkling of an eye when leaning forward, realizes preventing the problem of preceding tumbling. The wheel chair is provided with the backward overturning preventing device, the first roller is located behind the rear wheel, the bottoms of the first roller and the second roller are flush and extend out of the wheel chair, so that the contact area between the wheel chair on the rear side and the ground is larger, and the wheel chair is prevented from continuously toppling backwards.

Drawings

FIG. 1 is a schematic view of the present invention in a normal state;

FIG. 2 is a schematic view of a side view of the present invention in a normal state;

fig. 3 is a schematic view of a normal side of the present invention.

In the figure: the device comprises a frame 1, a front wheel 2, a rear wheel 3, a handrail 4, a backrest 5, a backward turning prevention device 6, a connecting frame 61, a support 62, a support 621, a support 622, a buffer spring 623, a roller 63, a balancing device 7, a rotating rod 71, a weight 72, a roller 73, a motor 74, a support plate 8 and a limit plate 9.

Detailed Description

The invention is explained in more detail below with reference to the figures and examples.

As shown in fig. 1-3: the utility model provides a can prevent preceding, safe wheelchair that hypsokinesis turned over, including wheelchair frame 1, front wheel 2 and rear wheel 3, be provided with handrail 4 and back 5 on wheelchair frame 1, still including preventing backward turning over device 6, the device includes link 61, support 62 and gyro wheel 63, link 61 slope sets up, its one end links to each other with frame 1, the other end of link 61 is located to gyro wheel 63, gyro wheel 63 is located rear and both bottoms of rear wheel 3 and flushes, support 62 is located between frame 1 and the link 61.

The first rolling wheels 63 are positioned behind the rear wheels 3, and the bottoms of the first rolling wheels and the second rolling wheels are flush, so that the contact area between the wheelchair on the rear side and the ground is larger, the wheelchair is not easy to topple backwards, and the wheelchair is prevented from continuously toppling backwards.

The bracket 62 is connected with the upper part of the connecting bracket 61, and an acute angle is formed between the bracket 62 and the connecting bracket 61, the bracket 62 is composed of an upper part and a lower part which are respectively a bracket I621 and a bracket II 622, and a buffer spring 623 is arranged between the bracket I621 and the bracket II 622.

The connecting frame 61 can relatively rotate at a position close to the first roller 63, and the buffering effect of the buffering spring 623 is combined, so that a rider can play a certain buffering effect when the rider instantly topples backwards, and the use is more comfortable.

The bottom of the frame 1 is also provided with a forward-tilting prevention balancing device 7 which comprises a rotating rod 71 capable of rotating in a self-rotating way, a weight 72 connected with one end of the rotating rod 71 and a second roller 73 connected with the other end of the rotating rod 71, wherein the distance between the second roller 73 and the axle center of the rotating rod 71 is larger than that between the weight 72 and the axle center of the rotating rod 71, so that the second roller 73 can rotate forwards out of the wheelchair and is positioned at the position, relative to the front, of the front wheel 2, and the weight 72 can be positioned at the bottom of the wheelchair all the time.

Here, in normal use (not downhill), the weight 72 is located on the opposite front side of the center of gravity of the human body and the wheelchair (slightly forward, too large and easily turned forward), because the back of the head is relatively more fragile and susceptible to damage, and can play a role in preventing the potential safety hazard of backward tilting of the wheelchair to some extent.

Because the wheelchair has certain contained angle with the ground contact when downhill path, consequently the bottom plate that sets up two 73 of gyro wheel in this scheme is higher than rear wheel 3 bottoms, the supporting role of realization wheelchair front side that can be better, simultaneously, can make motor 74 can drive two 73 rotations of gyro wheel in a flexible way.

The balancing device 7 further comprises a motor 74 (a switch is arranged on the wheelchair armrest 4, so that the motor 74 can drive the two rollers 73 to rotate 90 degrees relatively, the specific connection is controlled through a P L C program), the motor 74 is arranged in the middle of the frame 1, the output end of the motor 74 is connected with the rotating rod 71, the motor 74 is used for driving the rotating rod 71 to rotate, when the wheelchair is in a downhill slope, the two rollers 73 are arranged in front, the weight 72 is arranged on the rear side of the relative gravity center of the wheelchair, and when the two rollers 73 rotate to the front side of the frame 1 along with the rotating rod 71, the two rollers are arranged in front of the front wheel 2 in the horizontal direction, so that the supporting effect can be achieved to a certain degree, and the weight 72 is used for supporting the gravity of the rear side, and the instant forward tipping.

In the scheme, the weight 72 only plays a certain balance, and the center of the vehicle frame 1 and the whole person is inclined backwards, so that the phenomenon that the wheelchair is driven to turn over instantly when the person inclines forwards on a downhill is prevented, the weight cannot be too large, and the phenomenon that the motor 74 cannot support the gravity of the wheelchair to be damaged is prevented, and the weight 72 is designed according to the whole scheme and has the mass of 10kg-20 kg.

The front side of the frame 1 is provided with a support plate 8, the top of the support plate 8 is hinged with a limit plate 9 which can be turned in the vertical direction, so that a rider is prevented from leaning forward and falling out of the wheelchair, and the safety performance is improved.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and the protection scope must be determined by the scope of the claims.

Claims (6)

1. The utility model provides a can prevent preceding, hypsokinesis and turn over safe wheelchair, includes wheelchair frame, front wheel and rear wheel, is provided with handrail and back on the wheelchair frame, its characterized in that: still including preventing turning over the device after, the device includes link, support and gyro wheel one, the link slope sets up, and its one end links to each other with the frame, and the other end of link is located to gyro wheel one, gyro wheel one is located the rear of rear wheel and both bottoms flush, the support is located between frame and the link, the bottom of frame still is equipped with prevents the balancing unit that leans forward, and the device includes the bull stick that can rotate, the pouring weight of being connected with bull stick one end, the gyro wheel two of being connected with the bull stick other end, and the distance in gyro wheel two and bull stick axle center is greater than the distance in pouring weight and bull stick axle center, the bottom plate of gyro wheel two is higher than the rear wheel bottom.

2. The safety wheelchair of claim 1, wherein the wheelchair is capable of preventing forward and backward tilting, and comprises: the balancing device further comprises a motor, the motor is arranged in the middle of the frame, and the output end of the motor is connected with the rotating rod.

3. The safety wheelchair of claim 2, wherein the wheelchair further comprises: when the second idler wheel rotates to the front side of the frame along with the rotating rod, the second idler wheel is located in front of the front wheel in the horizontal direction, and the heavy block is located on the rear side of the frame.

4. The safety wheelchair of claim 1, wherein the wheelchair is capable of preventing forward and backward tilting, and comprises: the weight has a mass of 10kg-20kg and is used for tilting the center of the vehicle frame and the whole human body backwards when in use.

5. The safety wheelchair of claim 1, wherein the wheelchair is capable of preventing forward and backward tilting, and comprises: the support is connected with the upper portion of the connecting frame, an acute angle is formed between the support and the connecting frame, the support is composed of an upper portion and a lower portion, the support is divided into a first support and a second support, and a buffer spring is arranged between the first support and the second support.

6. The safety wheelchair of claim 1, wherein the wheelchair is capable of preventing forward and backward tilting, and comprises: the front side of the frame is provided with a support plate, and the top of the support plate is hinged with a limiting plate which can be turned over in the vertical direction.

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