CN216496136U

CN216496136U - Auxiliary push-pull device of wheelchair

Info

Publication number: CN216496136U
Application number: CN202123246018.4U
Authority: CN
Inventors: 阳勇; 张勇华
Original assignee: Shenzhen Cheanda M&e Co ltd
Current assignee: Shenzhen Cheanda M&e Co ltd
Priority date: 2021-12-22
Filing date: 2021-12-22
Publication date: 2022-05-13
Anticipated expiration: 2031-12-22

Abstract

The utility model relates to an auxiliary push-pull device of a wheelchair, which comprises a main body, a battery, a control panel, a control handle, an electric driving wheel and a connecting piece, wherein the control handle, the battery and the electric driving wheel are electrically connected with the control panel, the battery, the control panel and the control handle are arranged on the wheelchair or the main body, the connecting piece is connected with the main body, the connecting piece is also used for installing the main body on the wheelchair, and the electric driving wheel is connected with the main body. The utility model can save physical power of users, has low price, can popularize the disabled and sick people, has high living quality, is convenient for carrying the manual wheelchair, can realize the independent use of the wheelchair to charge the booster, and has more convenient use of the wheelchair in home life by a connection mode of lifting and supporting.

Description

Auxiliary push-pull device of wheelchair

Technical Field

The utility model relates to an auxiliary push-pull device of a wheelchair.

Background

The traditional wheelchair can only manually push a tire to run in the market, people using the wheelchair belong to disabled and sick people, most of the disabled and sick people have weak physical strength, the disabled and sick people have small range of motion and narrow social circle due to the difficulty in manually pushing the wheelchair, the hands of the traditional wheelchair are dirty in pushing the wheelchair, and the user is troubled by the hands of the traditional wheelchair; the auxiliary push-pull device of the manual wheelchair on the market at present is a tail boosting method and a head pulling method, the two methods are a method for pushing or pulling the manual wheelchair to move back and forth or back through a horizontal or inclined connecting part, because the pushing or pulling method of the horizontal or inclined connecting part is to push and pull by friction force generated by the self weight of the auxiliary push-pull device, the defect that the auxiliary push-pull device has light weight, small friction force and limited push-pull force can be generated, the friction force is increased due to the heavy weight of the auxiliary push-pull device, but the auxiliary push-pull device has poor carrying quality, the defect that the manual wheelchair can be steered only by applying resistance on left and right wheels of the manual wheelchair by hands during steering in the tail boosting method, and the manual wheelchair can be steered only by transversely moving the push-pull device during steering, so the problem of transversely moving of the tail boosting by generally using an omnidirectional wheel or a forced tire, the omnidirectional wheel has the defects of high price and low durability, the mode of forcibly enabling the tire of the tail push-pull device to transversely move is used for steering in an inflexible way and has high power consumption, the other head traction mode is arranged in front of the steering auxiliary wheel of the manual wheelchair and is used for traction in a riding mode like an electric bicycle, and the head traction mode is arranged in front of the auxiliary wheel, so that the object taking in front of the wheelchair is greatly inconvenient in life, the steering can be completed in a large space, the flexibility of the manual wheelchair is seriously influenced, the wheelchair is not suitable for being used at home, the auxiliary device additionally arranged at the head of the wheelchair is only suitable for running on a road, the applicable environment is less, and the use is inconvenient.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model aims to provide an auxiliary push-pull device of a wheelchair, wherein an electric driving wheel is arranged on a push-pull device main body and is movably connected on a supporting rod of a connecting piece, the connecting piece is connected with the manual wheelchair, the connecting piece is connected with the supporting rod and the push-pull device main body and then is in a nearly vertical state with the ground, the connecting piece is directly arranged at the bottom of the manual wheelchair to play a role in lifting the manual wheelchair, the supporting force to the manual wheelchair can be increased by adjusting the position of a supporting rod on the connecting piece, the friction force of the push-pull device main body to the ground can be enhanced in an auxiliary way by the weight of the manual wheelchair and a user, the problem that the auxiliary push-pull device has light weight and stronger push-pull force is solved, the novel auxiliary push-pull device is powered by a battery, a handle of an operating piece is operated to drive the electric driving wheel to move forwards and backwards under the control of a control board, and meanwhile, the electric control auxiliary push-pull device is provided with a steering driving mechanism, the electric wheelchair can be steered under the cooperation of a steering driving mechanism, only an electric control auxiliary push-pull device is connected to the manual wheelchair through the technology, the manual wheelchair can be assisted by the electric push-pull device, the electric advancing, retreating and steering functions are realized, the mechanical brake of the manual wheelchair is kept, the supporting force of the auxiliary push-pull device shares the supporting force of the manual wheelchair, the durability of front wheels is improved, the convenience of the manual wheelchair is improved while the safety of the manual wheelchair is not weakened, the physical strength of the disabled and sick people is saved, the living range is expanded, even the electric control auxiliary push-pull device can be separated from the manual wheelchair through a movable connector for carrying out independent transportation and independent charging, the problems that the electric wheelchair is expensive, heavy and difficult to transport and the wheelchair cannot be used during charging are solved, because the auxiliary push-pull device is arranged below the manual wheelchair in a supporting and lifting mode, the tail part of the manual wheelchair is not positioned in front of a steering wheel of the manual wheelchair, the problem of tail portion promotion sideslip and the inflexible problem of head traction are solved, and the outdoor and the house life of disabled and weak can both be used for taking into account. Meanwhile, positioning, intelligent push-pull device posture control and the like are used, so that the intellectualization of the auxiliary device is improved, and family members can feel more relieved.

The utility model is realized by the following technical scheme.

An auxiliary push-pull device of a wheelchair comprises a main body, a battery, a control panel, a control handle, an electric driving wheel and a connecting piece, wherein the control handle, the battery and the electric driving wheel are electrically connected with the control panel; the main body is arranged at the bottom of the wheelchair, and the connecting piece and/or the electric driving wheel are/is in sliding connection with the main body and are provided with a locking mechanism, so that the height of the electric driving wheel can be adjusted, and the supporting force of the auxiliary push-pull device on the wheelchair can be adjusted; the connecting piece and/or the electric driving wheel are/is rotationally connected with the main body, so that the auxiliary push-pull device of the wheelchair can realize the steering of the wheelchair; the control handle drives the electric driving wheel through the control panel.

Preferably, the wheelchair further comprises a steering driving mechanism, and the steering driving mechanism controls the electric driving wheel to realize steering of the wheelchair.

Preferably, the connecting piece is connected with the main body through a supporting rod, the lower end of the supporting rod is rotatably connected with the main body through a supporting seat, and the upper end of the supporting rod is slidably connected with the connecting piece and is provided with a locking mechanism.

Preferably, the electric driving wheel is connected with the main body through a supporting rod, the upper end of the supporting rod is rotatably connected with the main body through a supporting seat, and the lower end of the supporting rod is slidably connected with the electric driving wheel and provided with a locking mechanism.

Preferably, the connector is installed in the main part, the electric drive wheel pass through the bracing piece with the main part is connected, the middle part of bracing piece pass through the supporting seat with the main part rotates to be connected, the lower extreme of bracing piece with electric drive wheel sliding connection sets locking mechanism, the upper end of bracing piece is worn out the main part and sliding connection has control handle, set up locking mechanism between bracing piece and the control handle, control handle becomes "T" type.

Preferably, the number of the electric driving wheels is two, and the control handle controls the speed difference formed between the two electric driving wheels through the control panel to realize the steering of the wheelchair.

Preferably, the steering driving mechanism comprises a steering motor and a steering transmission mechanism, and the steering motor drives the electric driving wheel to steer through the steering transmission mechanism. The steering transmission mechanism comprises a worm wheel and a worm which are respectively connected with the steering motor and the electric driving wheel, and the worm wheel is meshed with the worm; or the steering transmission mechanism comprises a first gear and a second gear which are respectively connected with the steering motor and the electric driving wheel, and the first gear is meshed with the second gear.

Preferably, still include and turn to stop gear, turn to stop gear and include limit stop and spacing groove, limit stop and spacing groove are installed respectively on main part and bracing piece.

Preferably, still include position sensor and signal disc, position sensor and control panel electric connection, position sensor and signal disc are installed respectively on main part and bracing piece, enable when the signal disc rotates position sensor produces signal electric connection to control panel. The position sensor comprises a switch type, a magnetoelectric induction type, a Hall type, a photoelectric position sensor and the like, and a signal panel is provided with a tooth notch, a convex tooth, a grating or a signal panel which is provided with a magnet.

Preferably, the connecting piece comprises a cross rod, a left connecting rod and a right connecting rod, the left connecting rod and the right connecting rod are connected with the cross rod in a sliding mode and are provided with locking screws, and the width of the connecting piece is adjustable.

Preferably, the control panel is equipped with orientation module and communication module, and orientation module is one or two kinds in GPS orientation module and the big dipper orientation module, and communication module uploads the cloud server with current locating information, reads positional information through can following the cloud server when handheld communications facilities need look over the location, control panel still electric connection has LED lamp pearl and/or loudspeaker, LED lamp pearl is luminous for providing illumination or warning, loudspeaker are for providing audible cue or warning, are equipped with the protection casing on the LED lamp pearl, have dustproof rain-proof guard action.

Preferably, the bottom of the control handle is provided with a clamping part, the control handle is arranged on a rod of the wheelchair in a clamping mode through the clamping part, the control handle is provided with a straight fine adjustment button or knob, the control handle is further provided with a rocking handle, the control handle is electrically connected with the control panel, and the control handle can control the electric control auxiliary push-pull device to move and turn.

Preferably, the main body is a box body, and the battery and the control panel are installed in the main body.

Compared with the prior art, the utility model has the advantages that: can save user's physical power, the low price can popularize disabled sick and weak crowd and be high life quality, makes things convenient for the transport of manual wheelchair simultaneously, also can realize the exclusive use wheelchair and charge the boost motor, and it is more convenient at home life to use the wheelchair to jack up the hookup mode that supports.

Drawings

FIG. 1 is a schematic structural view of embodiment 1 of the present invention (a wheelchair is not shown, and a booster body is provided with two wheels connected to a connecting member via a support rod);

FIG. 2 is a schematic sectional view of embodiment 1 of the present invention (the wheelchair is not shown, and the booster body is provided with two wheels connected to a coupling member via a support rod);

fig. 3 is an exploded view of embodiment 1 of the present invention (not shown wheelchair, two-wheeled solution);

FIG. 4 is a schematic diagram of signal panel spacing for embodiment 1 of the present invention (without wheelchair, dual wheel solution);

FIG. 5 is a schematic structural view of embodiment 2 of the present invention (the wheelchair is not shown, and the booster body is coupled to the coupling member in a single wheel scheme);

FIG. 6 is a schematic cross-sectional view of embodiment 2 of the present invention (the wheelchair is not shown, and the booster body is coupled to the coupling member in a single wheel version);

FIG. 7 is an exploded view of embodiment 2 of the present invention (the wheelchair is not shown, the booster body is coupled to the coupling member in a single wheel version);

figure 8 is a schematic coupling of the coupling mechanism of embodiment 2 of the present invention (showing the external wheelchair coupling);

FIG. 9 is a schematic structural view (manually steered) of embodiment 3 of the present invention

FIG. 10 is a schematic diagram of an electrical framework for practicing the present invention;

FIG. 11 is a block diagram of a control handle embodying the present invention;

in the figure: 1. A main body, 2, a control panel, 3, a control handle, 4, a battery, 5, an electric driving wheel, 6, a support seat, 7, a connecting piece, 8, a cross rod, 9, a support rod, 10, a locking nut, 11, a locking screw, 12, a locking mechanism, 13, an upper bearing, 14, a lower bearing, 15, a position sensor, 16, a signal disc, 17, a convex tooth, 18, a left connecting rod, 19, a right connecting rod, 20, a tooth gap, 21, a steering handle, 22, an LED lamp bead, 23, a lighting lamp or a warning lamp, 24, a protective cover, 25, an operating handle, 26, an operating handle main body, 27, a rocking handle, 28, a straight fine tuning button or knob, 29, a communication module, 30, a positioning module, 31, a loudspeaker, 32, a cloud server, 33, a connecting wire, 34, a worm support, 35, a limit stop, 36, a limit groove, 37, a turbine, 38, a worm, 39 and a steering motor, 40. a steering motor bracket 41 and a wheelchair.

Detailed Description

The utility model is further described with reference to the following drawings and specific examples, which are not intended to be limiting.

Example 1

As shown in figures 1 to 4 of the drawings,

an auxiliary push-pull device of a wheelchair comprises a main body 1, a battery 4, a control panel 2, a control handle 3, an electric driving wheel 5 and a connecting piece 7, wherein the control handle 3, the battery 4 and the electric driving wheel 5 are electrically connected with the control panel 2, the battery 4, the control panel 2 and the control handle 3 are installed on the wheelchair, the connecting piece 7 is connected with the main body 1, the connecting piece 7 is also used for installing the main body 1 on the wheelchair, and the electric driving wheel 5 is connected with the main body 1; the main body 1 is arranged at the bottom of the wheelchair, the connecting piece 7 is connected with the main body 1 in a sliding way and is provided with a locking mechanism 12, so that the height of the electric driving wheel 5 can be adjusted, and the supporting force of the auxiliary push-pull device on the wheelchair can be adjusted; the connecting piece 7 is rotatably connected with the main body 1, so that the auxiliary push-pull device of the wheelchair can realize the steering of the wheelchair; the control handle 3 drives the electric driving wheel 5 through the control panel 2.

In the embodiment, the battery 4 and the control panel 2 are installed on the main body 1, and the control handle 3 is installed on the wheelchair; however, the battery 4 and the control panel 2 may be attached to the wheelchair, and the control panel 2 may be connected to the electric drive wheel 5 of the main body 1 by a wire, which is not different from the actual installation method of the present embodiment.

In this embodiment, specifically, the connecting member 7 is slidably connected to the main body 1, and at least one of the connecting member 7 and the electric driving wheel 5 is slidably connected to the main body 1, so that the height of the electric driving wheel 5 can be adjusted, the supporting force of the auxiliary push-pull device on the wheelchair can be adjusted, the ground gripping force and the friction force of the electric driving wheel 5 on the ground can be adjusted, and a stronger push-pull force can be provided; therefore, the specific sliding connection of the coupling member 7 and the electric drive wheel 5 to the main body 1 is not particularly limited, and it is only necessary that at least one of them is slidably connected to the main body 1.

Wherein, in the embodiment, the electric driving wheel 5 is rotatably connected with the main body 1, and at least one of the connecting piece 7 and the electric driving wheel 5 is rotatably connected with the main body 1, so that the steering of the wheelchair can be finally realized; when only the coupling 7 is rotatably connected with the main body 1 as in the present embodiment, the steering of the wheelchair is achieved by means of the differential speed of the two electric driving wheels 5; when only the electric driving wheel 5 is rotationally connected with the main body 1, the electric driving wheel 5 is driven to steer by the steering driving mechanism to realize the steering of the wheelchair; when the connecting piece 7 and the electric driving wheel 5 are both rotationally connected with the main body 1, the steering can be realized by means of differential steering or steering driving mechanism; therefore, the specific rotational connection of the coupling member 7 and the electric drive wheel 5 to the main body 1 is not particularly limited, and it is only necessary that at least one of them is rotationally connected to the main body 1.

In a preferred embodiment, the connecting member 7 is connected to the main body 1 through a support rod 9, the lower end of the support rod 9 is rotatably connected to the main body 1 through a support seat 6, and the upper end of the support rod 9 is slidably connected to the connecting member 7 and is provided with a locking mechanism 12.

In a preferred embodiment, the number of the electric driving wheels 5 is two, two electric driving wheels 5 are respectively installed on two sides of the main body 1, and the control handle 3 controls the two electric driving wheels 5 to form a speed difference through the control board 2, so as to realize the steering of the wheelchair.

As a preferred embodiment, the steering limiting mechanism further comprises a limiting stop 35 and a limiting groove 36, wherein the limiting stop 35 and the limiting groove 36 are respectively arranged on the main body 1 and the support rod 9; wherein the limit stop 35 can be installed on the main body 1, and the limit groove 36 is installed on the support rod 9; it is also possible to mount the limit groove 36 on the body 1 and the limit stopper 35 on the support bar 9.

As a preferred embodiment, the device further comprises a position sensor 15 and a signal panel 16, wherein the position sensor 15 is electrically connected with the control panel 2, the position sensor 15 and the signal panel 16 are respectively installed on the main body 1 and the support rod 9, and when the signal panel 16 rotates, the position sensor 15 can generate a signal and is electrically connected with the control panel 2; wherein the position sensor 15 can be mounted on the body 1 and the signal panel 16 is mounted on the support bar 9; it is also possible to mount the signal panel 16 on the body 1 and the position sensor 15 on the support rod 9. The position sensor 15 is composed of a switch type, a magnetoelectric induction type, a Hall type and a photoelectric position sensor 15, and a signal panel 16 is provided with a tooth gap, a convex tooth 17 and a grating or a signal panel 16 with a magnet.

As a preferred embodiment, the coupling member 7 comprises a cross bar 8, a left coupling rod 18 and a right coupling rod 19, the left coupling rod 18 and the right coupling rod 19 are slidably connected with the cross bar 8 and are provided with locking screws 11, so that the width of the coupling member 7 is adjustable.

As preferred embodiment, control panel 2 is equipped with orientation module 30 and communication module 29, and orientation module 30 is one or two kinds in GPS orientation module 30 and the big dipper orientation module 30, and communication module 29 uploads cloud server 32 with current locating information, and through can reading positional information from cloud server 32 when handheld communications facilities need look over the location, control panel 2 still electric connection has LED lamp pearl 22 and/or loudspeaker 31, LED lamp pearl 22 is luminous for providing illumination or warning, loudspeaker 31 is for providing sound prompt or warning, is equipped with protection casing 24 on the LED lamp pearl 22, has dustproof rain-proof guard action.

As a preferred embodiment, the bottom of the control handle 3 is provided with a clamping portion (not shown in the drawing), the control handle 3 is installed on a rod of the wheelchair in a clamping manner through the clamping portion, the control handle 3 is provided with a straight fine adjustment button or knob 28, the control handle 3 is further provided with a rocking handle 27, the control handle 3 is electrically connected with the control panel 2, and the control handle 3 can control the electric control auxiliary push-pull device to move and turn.

In a preferred embodiment, the main body 1 is a box, and the battery 4 and the control board 2 are mounted in the main body 1.

The working principle is as follows:

the connecting piece 7 of the auxiliary push-pull device of the wheelchair is arranged on the wheelchair and can be arranged in a welding or hinging mode, the locking mechanism 12 is loosened, the relative position of the electric driving wheel 5 is adjusted, the electric driving wheel 5 lands on the ground to generate a certain supporting force, the electric driving wheel 5 has a ground gripping force, the locking mechanism 12 is locked after the adjustment is finished, and the electric driving wheel 5 is controlled to run and stop by operating the control handle 3, so that the purpose of assisting the wheelchair to run is achieved;

the control handle 3 controls the two electric driving wheels 5 to form a speed difference through the control panel 2 so as to realize the steering of the wheelchair.

Example 2

As shown in fig. 5 to 8, an auxiliary push-pull device for a wheelchair comprises a main body 1, a battery 4, a control panel 2, a control handle 3, an electric driving wheel 5 and a connecting member 7, wherein the control handle 3, the battery 4 and the electric driving wheel 5 are electrically connected with the control panel 2, the battery 4 and the control panel 2 are installed on the main body 1, the control handle is installed on the wheelchair, the connecting member 7 is connected with the main body 1, the connecting member 7 is also used for installing the main body 1 on the wheelchair, and the electric driving wheel 5 is connected with the main body 1; the main body 1 is arranged at the bottom of the wheelchair, the electric driving wheel 5 is connected with the main body 1 in a sliding way and is provided with a locking mechanism 12, so that the height of the electric driving wheel 5 can be adjusted, and the supporting force of the auxiliary push-pull device on the wheelchair can be adjusted; the electric driving wheel 5 is rotationally connected with the main body 1, so that the auxiliary push-pull device of the wheelchair can realize the steering of the wheelchair; the control handle 3 drives the electric driving wheel 5 through the control panel 2.

In the embodiment, specifically, the electric driving wheel 5 is slidably connected with the main body 1, and at least one of the connecting member 7 and the electric driving wheel 5 is slidably connected with the main body 1, so that the height of the electric driving wheel 5 can be adjusted, the supporting force of the auxiliary push-pull device on the wheelchair is adjusted, the ground gripping force and the friction force of the electric driving wheel 5 on the ground are adjusted, and the push-pull force is stronger; therefore, the specific sliding connection of the coupling member 7 and the electric drive wheel 5 to the main body 1 is not particularly limited, and it is only necessary that at least one of them is slidably connected to the main body 1.

As a preferred embodiment, the wheelchair further comprises a steering driving mechanism, and the steering driving mechanism controls the electric driving wheels 5 to realize steering of the wheelchair.

In a preferred embodiment, the number of the electric driving wheel 5 is one, the electric driving wheel 5 is connected to the main body 1 through a support rod 9, the upper end of the support rod 9 is rotatably connected to the main body 1 through a support base 6, and the lower end of the support rod 9 is slidably connected to the electric driving wheel 5 and is provided with a locking mechanism 12. The coupling 7 is mounted on the body 1. As shown in fig. 8, there may be two electric drive wheels 5.

As a preferred embodiment, the steering driving mechanism comprises a steering motor 39 and a steering transmission mechanism, and the steering motor 39 drives the electric driving wheel 5 to steer through the steering transmission mechanism. The steering transmission mechanism comprises a worm wheel 37 and a worm 38 which are respectively connected with a steering motor 39 and the electric driving wheel 5, and the worm wheel 37 is meshed with the worm 38; or the steering transmission mechanism comprises a first gear and a second gear which are respectively connected with the steering motor 39 and the electric driving wheel 5, and the first gear is meshed with the second gear.

As a preferred embodiment, the coupling member 7 comprises a cross bar 8, a left coupling rod 18 and a right coupling rod 19, wherein the left coupling rod 18 and the right coupling rod 19 are slidably connected with the cross bar 8 and are provided with locking screws, so that the width of the coupling member 7 can be adjusted.

As a preferred embodiment, the bottom of the control handle 3 is provided with a clamping portion, the control handle 3 is installed on a rod of the wheelchair in a clamping manner through the clamping portion, the control handle 3 is provided with a straight fine adjustment button or knob 28, the control handle 3 is further provided with a rocking handle 27, the control handle 3 is electrically connected with the control panel 2, and the control handle 3 can control the electric control auxiliary push-pull device to move and turn.

The operating principle is the same as that of the wheelchair, the control handle 3 controls the steering motor 39 through the control panel 2, and the steering motor 39 controls the electric driving wheel 5 to steer through the worm wheel 37 and the worm 38 (or through a gear), so that the wheelchair can steer.

Example 3

As shown in fig. 9, an auxiliary push-pull device for a wheelchair includes a main body 1, a battery 4, a control panel 2, a control handle 3, an electric driving wheel 5, and a connecting member 7, wherein the control handle 3, the battery 4, and the electric driving wheel 5 are electrically connected to the control panel 2, the battery 4, the control panel 2, and the control handle 3 are mounted on the wheelchair or mounted on the main body 1, the connecting member 7 is connected to the main body 1, the connecting member 7 is further used for mounting the main body 1 on the wheelchair, and the electric driving wheel 5 is connected to the main body 1; the main body 1 is arranged at the bottom of the wheelchair, the electric driving wheel 5 is connected with the main body 1 in a sliding way and is provided with a locking mechanism 12, so that the height of the electric driving wheel 5 can be adjusted, and the supporting force of the auxiliary push-pull device on the wheelchair can be adjusted; the electric driving wheel 5 is rotationally connected with the main body 1, so that the auxiliary push-pull device of the wheelchair can realize the steering of the wheelchair; the control handle 3 drives the electric driving wheel 5 through the control panel 2.

In this embodiment, the battery 4, the control panel 2 and the control handle 3 are mounted on the main body 1; however, the battery 4 and the control panel 2 may be attached to the wheelchair, and the control panel 2 may be connected to the electric drive wheel 5 of the main body 1 by a wire, which is not different from the actual installation method of the present embodiment.

As a preferred embodiment, the coupling member 7 is mounted on the main body 1, the number of the electric driving wheels 5 is one, the electric driving wheels 5 are connected with the main body 1 through a support rod 9, the middle part of the support rod 9 is rotatably connected with the main body 1 through a support seat 6, the lower end of the support rod 9 is slidably connected with the electric driving wheels 5 and is provided with a locking mechanism 12, the upper end of the support rod 9 penetrates through the main body 1 and is slidably connected with the control handle 3, the locking mechanism 12 is arranged between the support rod 9 and the control handle 3, the control handle 3 is in a "T" shape, and the "T" shape control handle 3 comprises an operating handle 25 and a steering handle 21, so that the electric driving wheels 5 can be driven, and the electric driving wheels 5 can be steered.

The working principle is the same as that of the steering faucet of the bicycle, and the steering of the wheelchair is realized by rotating the control handle 3 through the T-shaped control handle 3.

While the utility model has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the utility model.

Claims

1. The auxiliary push-pull device of the wheelchair is characterized by comprising a main body, a battery, a control panel, a control handle, an electric driving wheel and a connecting piece, wherein the control handle, the battery and the electric driving wheel are electrically connected with the control panel; the main body is arranged at the bottom of the wheelchair, and the connecting piece and/or the electric driving wheel are/is in sliding connection with the main body and are provided with a locking mechanism, so that the height of the electric driving wheel can be adjusted, and the supporting force of the auxiliary push-pull device on the wheelchair can be adjusted; the connecting piece and/or the electric driving wheel are/is rotationally connected with the main body, so that the auxiliary push-pull device of the wheelchair can realize the steering of the wheelchair; the control handle drives the electric driving wheel through the control panel.

2. The wheelchair assistance push-pull of claim 1 further comprising a steering drive mechanism for controlling the motorized drive wheels to steer the wheelchair.

3. The push-pull assist apparatus as claimed in claim 1, wherein the connecting member is connected to the main body through a support rod, the lower end of the support rod is rotatably connected to the main body through a support base, and the upper end of the support rod is slidably connected to the connecting member and provided with a locking mechanism.

4. The wheelchair push-pull assist system as claimed in claim 1, wherein the electric drive wheel is connected to the body by a support rod, the support rod is rotatably connected to the body at an upper end thereof by a support base, and the support rod is slidably connected to the electric drive wheel at a lower end thereof and provided with a locking mechanism.

5. The auxiliary push-pull device of a wheelchair as claimed in claim 1, wherein the connecting member is mounted on a main body, the electric driving wheel is connected to the main body through a support rod, the middle part of the support rod is rotatably connected to the main body through a support base, the lower end of the support rod is slidably connected to the electric driving wheel and provided with a locking mechanism, the upper end of the support rod penetrates through the main body and is slidably connected to a control handle, and the locking mechanism is arranged between the support rod and the control handle, and the control handle is shaped like a "T".

6. The wheelchair assistance push-pull apparatus as claimed in claim 1, wherein the number of the electric driving wheels is two, and the control handle controls the speed difference between the two electric driving wheels through the control panel to steer the wheelchair.

7. The wheelchair assistance push-pull of claim 1 wherein the steering drive mechanism comprises a steering motor and a steering gear, the steering motor driving the electrically powered drive wheel to steer via the steering gear.

8. The auxiliary push-pull of a wheelchair as claimed in claim 7, wherein the steering gear comprises a worm wheel and a worm respectively connected to the steering motor and the electric drive wheel, the worm wheel being engaged with the worm; or the steering transmission mechanism comprises a first gear and a second gear which are respectively connected with the steering motor and the electric driving wheel, and the first gear is meshed with the second gear.

9. The auxiliary push-pull device of a wheelchair as claimed in any one of claims 1 to 8, further comprising a position sensor and a signal panel, wherein the position sensor is electrically connected to the control panel, and the position sensor and the signal panel are respectively mounted on the main body and the support rod, and when the signal panel rotates, the position sensor generates a signal which is electrically connected to the control panel.

10. Auxiliary push-pull of a wheelchair according to any one of claims 1-8, characterised in that the link comprises a crossbar, a left and a right link rod, which are slidingly connected to the crossbar and are equipped with locking screws, so that the width of the link is adjustable.