CN213525983U

CN213525983U - Wheel chair

Info

Publication number: CN213525983U
Application number: CN202020378560.1U
Authority: CN
Inventors: 陈逸明
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-23
Filing date: 2020-03-23
Publication date: 2021-06-25
Anticipated expiration: 2030-03-23

Abstract

The utility model discloses a wheelchair, which comprises a seat for people to sit, a rolling component and a buffer device, wherein the buffer device is arranged between the seat and the rolling component; wherein the rolling assembly comprises a plurality of rollers and a roller seat for mounting the rollers; the buffer device comprises a support rod arranged on the roller seat, a guide cylinder arranged at the bottom of the seat and a buffer assembly used for controlling the extension of the support rod, and the support rod is sleeved in the guide cylinder; the buffer assembly comprises a first magnet fixed at the upper end of the supporting rod, a second magnet arranged in the guide cylinder and a first electromagnet used for controlling the second magnet to move, and a first elastic piece and a pressure sensor used for controlling the electromagnet are arranged between the electromagnet and the first magnet. Adopt the utility model discloses, the performance of moving away to avoid possible earthquakes is good, can reduce the scope of the range of swaing and the fluctuation of seat.

Description

Wheel chair

Technical Field

The utility model relates to a wheelchair technical field especially relates to a wheelchair.

Background

Conventional wheelchairs generally have a simple frame structure, and when a rider sits on the wheelchair, the wheelchair is easily affected by the conditions of the road surface, thereby reducing the comfort of the rider.

To the discomfort that reduces the uneven road surface and bring of buffer such as spring, hydraulic pressure are moved away to install additional at the wheelchair, because this kind of buffer, when adopting and reducing the stiffness coefficient such as spring to reduce the range of rocking of passenger's seat, but can increase the range that the seat floated from top to bottom simultaneously, thereby make the person of taking produce and have centrifugal sensation, and bring the discomfort for the person of taking.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to provide a wheelchair with good shock-absorbing performance, which can reduce the swing range and the up-and-down floating range of the seat.

In order to solve the technical problem, the utility model provides a wheelchair, which comprises a seat for people to sit, a rolling component and a buffer device, wherein the buffer device is arranged between the seat and the rolling component;

wherein the rolling assembly comprises a plurality of rollers and a roller seat for mounting the rollers;

the buffer device comprises a support rod arranged on the roller seat, a guide cylinder arranged at the bottom of the seat and a buffer assembly used for controlling the extension of the support rod, and the support rod is sleeved in the guide cylinder;

the buffer assembly comprises a first magnet fixed at the upper end of the supporting rod, a second magnet arranged in the guide cylinder and a first electromagnet used for controlling the second magnet to move, and a first elastic piece and a pressure sensor used for controlling the electromagnet are arranged between the electromagnet and the first magnet.

As an improvement of the above scheme, the wheelchair further comprises a main supporting device for supporting the seat, and the buffer device is distributed around the main supporting device.

As an improvement of the scheme, the main supporting device comprises a main guide cylinder, a main supporting rod matched with the main guide cylinder, a main driving wheel arranged at the lower end of the main supporting rod and a motor used for driving the main driving wheel, and rollers positioned at two sides of the main driving wheel are linked with the main driving wheel through a universal driving rod.

As an improvement of the above scheme, the main supporting device further includes a third magnet fixed at the upper end of the supporting rod, a fourth magnet arranged in the main guide cylinder, and a second electromagnet for controlling the fourth magnet to move, and a second elastic member and a pressure sensor for controlling the second electromagnet are arranged between the second electromagnet and the fourth magnet.

As a modification of the above, the first elastic member and the second elastic member are both springs.

As a modification of the above, the stiffness coefficient of the first elastic member is larger than the stiffness coefficient of the second elastic member.

As a modification of the above, the first elastic member and the second elastic member are made of a non-magnetic material.

As an improvement of the scheme, a power supply and a power supply frame for placing the power supply are arranged on the outer side of the main guide cylinder, and the power supply provides power for the first electromagnet, the second electromagnet and the pressure sensor.

As an improvement of the scheme, a universal connecting rod is connected between the adjacent roller seats.

As an improvement of the scheme, both ends of the universal connecting rod are provided with spherical heads for universal connection, and the main body of the universal connecting rod is a damping rod.

Implement the utility model discloses, following beneficial effect has:

the utility model discloses a wheelchair, which comprises a seat for people to sit, a rolling component and a buffer device, wherein the buffer device is arranged between the seat and the rolling component; wherein the rolling assembly comprises a plurality of rollers and a roller seat for mounting the rollers; the buffer device comprises a support rod arranged on the roller seat, a guide cylinder arranged at the bottom of the seat and a buffer assembly used for controlling the extension of the support rod, and the support rod is sleeved in the guide cylinder;

therefore, the impact of the supporting rod on the seat can be reduced by arranging the buffer component, so that the amplitude of the shaking of the seat caused by the bumpy road surface is reduced.

Meanwhile, the telescopic amount of the supporting rod can be changed according to the conditions of different concave-convex road surfaces, so that the seat can maintain a certain height on the bumpy road surface. The buffer assembly comprises a first magnet fixed at the upper end of the supporting rod, a second magnet arranged in the guide cylinder and a first electromagnet used for controlling the second magnet to move, and a first elastic piece and a pressure sensor used for controlling the electromagnet are arranged between the electromagnet and the first magnet.

Therefore, when the road surface bulge is too large, the elastic member is prevented from being hardened due to too large compression amplitude of the elastic member, and the cushioning performance is lowered, so that the seat is jacked up. The pressure sensor can control the attraction force of the first electromagnet to the second magnet by detecting the pressure condition of the elastic element to the pressure sensor, so that the elastic element can be further compressed. Similarly, when the road surface sinks too deeply, the repulsive force of the first electromagnet to the second magnet can be controlled, so that the supporting rod can further extend out.

Drawings

FIG. 1 is a schematic structural view of the wheelchair of the present invention;

fig. 2 is a schematic structural view of another angle of the wheelchair of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, the utility model provides a wheelchair, which comprises a seat 1 for people to sit, a rolling component and a buffer device, wherein the buffer device is arranged between the seat and the rolling component;

wherein the rolling assembly 3 comprises a plurality of rollers 31 and a roller seat 32 for mounting the rollers;

the buffer device comprises a support rod 21 arranged on the roller seat, a guide cylinder 22 arranged at the bottom of the seat and a buffer assembly 4 used for controlling the extension of the support rod, wherein the support rod 21 is sleeved in the guide cylinder 22;

the buffer assembly 4 comprises a first magnet 41 fixed at the upper end of the support rod, a second magnet 42 arranged in the guide cylinder 22 and a first electromagnet 43 for controlling the second magnet 42 to move, and a first elastic piece 44 and a pressure sensor 6 for controlling the electromagnet are arranged between the first electromagnet 43 and the first magnet 41. Therefore, when the pressure sensor 6 detects that the pressure is too high, the first electromagnet 43 is controlled to attract the second magnet 42 to further compress the first elastic member 44, so as to avoid jacking up the seat 1 and maintain the relatively horizontal position state of the seat 1. Also, when it moves to a relatively low level, the pressure sensor detects a decrease in the pressure value, thereby controlling the first electromagnet 43 to gradually weaken the attraction force to the second magnet 42. Similarly, when the cushioning device travels to a road surface recessed too deeply, the pressure sensor will detect that the pressure is too low, so as to control the first electromagnet 43 to repel the second magnet 42, so as to further extend the supporting rod 21, so as to maintain the relative horizontal state of the seat 1.

Specifically, the first magnet 41 and the second magnet 42 are disposed in a mutually repulsive manner, so that they and the first elastic member 44 perform a double buffering function, thereby reducing the influence of the road surface condition on the seat 1.

The wheelchair further comprises a main supporting device 7 for supporting the seat, the main supporting device 7 is arranged in the middle of the seat 1, and the buffering devices are distributed around the main supporting device 7. The main supporting device 7 comprises a main guide cylinder 71, a main supporting rod 72 matched with the main guide cylinder 71, a main driving wheel 73 arranged at the lower end of the main supporting rod 72 and a motor 74 for driving the main driving wheel, wherein the rollers 31 positioned at two sides of the main driving wheel are linked with the main driving wheel 73 through a universal transmission rod 75.

The main supporting device 7 further comprises a third magnet 76 fixed at the upper end of the supporting rod 7, a fourth magnet 77 arranged in the main guide cylinder 71, and a second electromagnet 78 for controlling the fourth magnet 77 to move, wherein a second elastic member 79 and a pressure sensor 6 for controlling the second electromagnet are arranged between the second electromagnet 78 and the fourth magnet 77. The third magnet 76 and the fourth magnet 77 are disposed in a mutually repulsive manner. Preferably, the first elastic member 44 and the second elastic member 79 are both springs. Also, the first elastic member 44 and the second elastic member 79 are made of a non-magnetic material.

Further, the main supporting device 7 is mainly applied with force according to the pressure distribution of the occupant to the seat 1, and therefore, the stiffness coefficient of the second elastic member 79 is larger than that of the first elastic member 44, so as to prevent the seat 1 from floating up and down too much.

In addition, since the conventional wheelchair is mainly supported and distributed on both sides of the wheelchair in terms of the sway, the wheels on both sides are likely to impart a force to the rider to cause the rider to sway when the rider passes over an uneven road surface. Therefore, the present invention will provide the main supporting device 7 at the main force-receiving portion of the seat (the middle portion of the seat), and assist the balance of the seat 1 through the buffering device. The main driving wheel 73 is arranged at the lower end of the main supporting rod 72, so as to drive the utility model to move. In addition, in the aspect of steering control, the acting force of the first electromagnet on the second magnet can be changed by controlling the buffer device which is in linkage relation with the main driving wheel so as to change the pressure of the support rod on the rollers, so that the steering effect can be generated as long as the difference of the friction force between the rollers 31 on the two sides and the ground reaches a certain degree.

The outer side of the main guide cylinder 71 is provided with a power supply 5 and a power supply frame 51 for placing the power supply, and the power supply 5 supplies power to the first electromagnet 43, the second electromagnet 78 and the pressure sensor 6.

In order to offset the utility model discloses at the removal in-process, to the yawing force that bracing piece 21 produced, it is adjacent be connected with universal joint pole 33 between the gyro wheel seat 32 to slow down the trend of bracing piece bending deformation.

Preferably, both ends of the universal connecting rod 33 are provided with spherical heads for universal connection, and the main body of the universal connecting rod is a damping rod. Preferably, the main body of the universal driving rod 75 is a telescopic rod.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.

Claims

1. A wheelchair is characterized by comprising a seat for a person to sit, a rolling assembly and a buffer device, wherein the buffer device is arranged between the seat and the rolling assembly;

2. The wheelchair of claim 1 further comprising a main support means for supporting the seat, the cushioning means being distributed about the main support means.

3. The wheelchair of claim 2, wherein the main supporting means comprises a main guide cylinder, a main support rod adapted to the main guide cylinder, a main driving wheel provided at a lower end of the main support rod, and a motor for driving the main driving wheel, and the rollers provided at both sides of the main driving wheel are linked with the main driving wheel through a universal transmission rod.

4. The wheelchair of claim 3, wherein the main supporting means further comprises a third magnet fixed to an upper end of the supporting bar, a fourth magnet provided in the main guide cylinder, and a second electromagnet for controlling the movement of the fourth magnet, and a second elastic member and a pressure sensor for controlling the second electromagnet are provided between the second electromagnet and the fourth magnet.

5. The wheelchair of claim 4 wherein the first and second resilient members are each a spring.

6. The wheelchair of claim 5 wherein the first resilient member has a greater coefficient of stiffness than the second resilient member.

7. The wheelchair of claim 4 wherein the first and second resilient members are each made of a non-magnetic material.

8. The wheelchair of claim 4 wherein a power source and a power source holder for holding the power source are provided outside the main guide cylinder, the power source supplying power to the first electromagnet, the second electromagnet and the pressure sensor.

9. The wheelchair of claim 1 wherein a universal connecting link is connected between adjacent roller seats.

10. The wheelchair of claim 9 wherein the universal connecting rod is provided at both ends thereof with a spherical head for universal connection, and the body of the universal connecting rod is a damping rod.