Electric wheelchair with anti-collision function

文档序号:1049377 发布日期:2020-10-13 浏览:15次 中文

阅读说明:本技术 一种具有防撞功能的电动轮椅 (Electric wheelchair with anti-collision function ) 是由 揭业冰 于 2020-07-03 设计创作,主要内容包括:本发明提供了一种具有防撞功能的电动轮椅,包括轮椅主体,所述轮椅主体上设置有防撞组件,制动组件和行动组件;所述防撞组件包括测距感应模块、压力感应模块、控制模块、提示模块和罩板组件;所述测距感应模块与所述控制模块电连接,用于检测电动轮椅在移动过程中与物体的距离;所述压力感应模块与所述控制模块电连接,用于感受碰撞压力;所述控制模块与所述制动组件电连接,用于控制所述电动轮椅运动或者停止;所述制动组件用于控制所述行动组件运动或者停止;所述提示模块与所述控制模块电连接,用于在碰撞前发出提示;所述罩板组件安装在所述轮椅主体的外侧。其能够防止发生碰撞,降低事故的发生几率,减小财产损失,保护使用者的人身安全。(The invention provides an electric wheelchair with an anti-collision function, which comprises a wheelchair main body, wherein an anti-collision assembly, a braking assembly and a moving assembly are arranged on the wheelchair main body; the anti-collision assembly comprises a distance measurement induction module, a pressure induction module, a control module, a prompt module and a cover plate assembly; the distance measurement sensing module is electrically connected with the control module and is used for detecting the distance between the electric wheelchair and an object in the moving process; the pressure sensing module is electrically connected with the control module and used for sensing collision pressure; the control module is electrically connected with the brake assembly and is used for controlling the electric wheelchair to move or stop; the brake component is used for controlling the action component to move or stop; the prompt module is electrically connected with the control module and is used for giving out a prompt before collision; the shroud plate assembly is mounted on the outside of the wheelchair body. The anti-collision device can prevent collision, reduce the occurrence probability of accidents, reduce property loss and protect the personal safety of users.)

1. An electric wheelchair with an anti-collision function comprises a wheelchair main body, and is characterized in that an anti-collision assembly, a braking assembly and a moving assembly are arranged on the wheelchair main body;

the anti-collision assembly comprises a distance measurement induction module, a pressure induction module, a control module, a prompt module and a cover plate assembly;

the distance measurement sensing module is electrically connected with the control module and is used for detecting the distance between the electric wheelchair and an object in the moving process;

the pressure sensing module is electrically connected with the control module and used for sensing collision pressure;

the control module is electrically connected with the brake assembly and is used for controlling the electric wheelchair to move or stop;

the brake component is used for controlling the action component to move or stop;

the prompt module is electrically connected with the control module and is used for giving out a prompt before collision;

the shroud plate assembly is mounted on the outside of the wheelchair body.

2. The electric wheelchair with collision avoidance function of claim 1,

the cover plate assembly comprises a front side cover, a rear side cover, a left side cover and a right side cover;

the front side cover is arranged on the front side of the wheelchair main body;

the rear side cover is arranged at the rear side of the wheelchair main body;

the left side cover is arranged on the left side of the wheelchair main body;

the right side cover is arranged on the right side of the wheelchair main body.

3. The electric wheelchair with collision avoidance function of claim 2,

the number of the distance measuring induction modules is at least four, and the four distance measuring induction modules are respectively arranged on the outer sides of the front side cover, the rear side cover, the left side cover and the right side cover;

the pressure sensing modules are at least four and are respectively arranged on the outer sides of the front side cover, the rear side cover, the left side cover and the right side cover.

4. The electric wheelchair with collision avoidance function of claim 1,

the brake assembly comprises a hand brake and a full brake mechanism;

the full-braking mechanism is used for limiting the action assembly to turn and walk.

5. The electric wheelchair with collision avoidance function of claim 4,

the action assembly comprises a front wheel and a rear wheel;

auxiliary brake teeth are fixed on the rear wheel;

the full-brake mechanism comprises a full-brake limiting sheet and a full-brake internal gear;

the hand brake can prize the full-brake limiting piece, so that the full-brake limiting piece is clamped with the full-brake internal gear piece, and the full-brake limiting piece is clamped with the auxiliary brake gear to limit the steering and walking of the rear wheel.

6. The electric wheelchair with crash prevention function as claimed in claim 5,

the integral structure of the front wheel comprises a detachable hub and a wheel body;

the wheel body comprises a plurality of detachable large rubber wheels and a plurality of detachable small rubber wheels;

the wheel surface of the wheel body is enclosed by the wheel surface of the large rubber wheel and the wheel surface of the small rubber wheel, and the large rubber wheel and the small rubber wheel drive the front wheel to laterally move transversely by rolling around a central shaft of the large rubber wheel and the small rubber wheel.

7. The electric wheelchair with collision avoidance function of claim 2,

the wheelchair main body is also provided with a shockproof device which comprises an elastic piece, a clamping sleeve and a clamping column;

the elastic piece is sleeved on the clamping column, one end of the elastic piece exceeds the clamping column, and the other end of the elastic piece is fixedly connected with the clamping column;

one position of the inner side wall of the clamping sleeve extends inwards along the radial direction to form a clamping table;

one end of the cutting sleeve is fixed on the wheelchair main body;

one end of the elastic piece, which exceeds the clamping column, is abutted against the clamping table;

the other end of the clamping column, which is far away from the elastic piece, is fixed on the cover plate component.

8. The electric wheelchair with crash prevention function as claimed in claim 7,

the four shock-proof devices are respectively arranged between the front side cover, the rear side cover, the left side cover, the right side cover and the wheelchair main body.

Technical Field

The invention relates to the technical field of intelligent wheelchairs, in particular to an electric wheelchair with an anti-collision function.

Background

In the prior art, wheelchairs can not run at high speed like automobiles due to the limitation of running speed. Therefore, most wheelchairs are not provided with an anti-collision device, or most of the anti-collision devices are passive anti-collision devices, namely after the wheelchairs are impacted, the personal safety of users is protected by using safety belts.

However, the above-mentioned method has a certain disadvantage in that the protective measures taken only after the collision may cause property damage and endanger personal safety during the collision.

Disclosure of Invention

The invention aims to provide an electric wheelchair with an anti-collision function, which is used for solving at least one technical problem and can automatically monitor the distance from an obstacle, control the wheelchair to stop running, prevent collision, reduce the occurrence probability of accidents, reduce property loss and protect the personal safety of users.

The embodiment of the invention is realized by the following steps:

an electric wheelchair with an anti-collision function comprises a wheelchair main body, wherein an anti-collision assembly, a braking assembly and a moving assembly are arranged on the wheelchair main body.

The anti-collision assembly comprises a distance measurement sensing module, a pressure sensing module, a control module, a prompt module and a cover plate assembly.

The distance measurement sensing module is electrically connected with the control module and used for detecting the distance between the electric wheelchair and an object in the moving process.

The pressure sensing module is electrically connected with the control module and used for sensing collision pressure.

The control module is electrically connected with the brake assembly and used for controlling the electric wheelchair to move or stop.

The brake component is used for controlling the action component to move or stop.

The prompt module is electrically connected with the control module and used for giving out a prompt before collision.

The shroud plate assembly is mounted on the outside of the wheelchair body.

In a preferred embodiment of the present invention, the shroud assembly of the electric wheelchair with a crash prevention function includes a front shroud, a rear shroud, a left shroud, and a right shroud.

The front side cover is installed on the front side of the wheelchair main body.

The rear side cover is installed at the rear side of the wheelchair main body.

The left side cover is installed on the left side of the wheelchair main body.

The right side cover is arranged on the right side of the wheelchair main body.

The technical effects are as follows: the periphery of the wheelchair is provided with an anti-collision cover plate to protect a user.

In a preferred embodiment of the present invention, at least four distance measuring sensing modules of the electric wheelchair with an anti-collision function are respectively installed at the outer sides of the front side cover, the rear side cover, the left side cover and the right side cover.

The pressure sensing modules are at least four and are respectively arranged on the outer sides of the front side cover, the rear side cover, the left side cover and the right side cover.

The technical effects are as follows: the wheelchair detection device is used for detecting the distance between the wheelchair main body and a front obstacle and detecting the impact force applied to the wheelchair.

In a preferred embodiment of the present invention, the brake assembly of the electric wheelchair with collision avoidance function includes a hand brake and a full brake mechanism.

The full-braking mechanism is used for limiting the action assembly to turn and walk.

The technical effects are as follows: for deactivating the wheelchair.

In a preferred embodiment of the present invention, the action assembly of the electric wheelchair with collision avoidance includes a front wheel and a rear wheel.

And auxiliary brake teeth are fixed on the rear wheel.

The full-braking mechanism comprises a full-braking limiting piece and a full-braking internal gear.

The hand brake can prize the full-brake limiting piece, so that the full-brake limiting piece is clamped with the full-brake internal gear piece, and the full-brake limiting piece is clamped with the auxiliary brake gear to limit the steering and walking of the rear wheel.

The technical effects are as follows: used for controlling the wheelchair to stop moving.

In a preferred embodiment of the present invention, the integral structure of the front wheel of the electric wheelchair with collision avoidance function includes a detachable hub and a wheel body.

The wheel body comprises a plurality of detachable big rubber wheels and a plurality of detachable small rubber wheels.

The wheel surface of the wheel body is enclosed by the wheel surface of the large rubber wheel and the wheel surface of the small rubber wheel, and the large rubber wheel and the small rubber wheel drive the front wheel to laterally move transversely by rolling around a central shaft of the large rubber wheel and the small rubber wheel.

The technical effects are as follows: the in-situ steering of the wheelchair is realized, so that the electric wheelchair can freely pass through a narrow space.

In a preferred embodiment of the present invention, the wheelchair main body of the electric wheelchair with an anti-collision function is further provided with a shock-proof device, which includes an elastic member, a clamping sleeve and a clamping column.

The elastic piece is sleeved on the clamping column, one end of the elastic piece exceeds the clamping column, and the other end of the elastic piece is fixedly connected with the clamping column.

One position of the inner side wall of the clamping sleeve extends inwards along the radial direction to form a clamping table.

One end of the cutting sleeve is fixed on the wheelchair main body.

One end of the elastic piece, which exceeds the clamping column, is abutted against the clamping table.

The other end of the clamping column, which is far away from the elastic piece, is fixed on the cover plate component.

The technical effects are as follows: when the vibration happens, the elastic piece plays a role in buffering, and the impact on a user is reduced.

In a preferred embodiment of the present invention, the four sets of the anti-vibration devices of the electric wheelchair with the anti-collision function are respectively disposed between the front side cover, the rear side cover, the left side cover, the right side cover and the wheelchair main body.

The technical effects are as follows: the shock attenuation can all be realized in different position, promotes the shock attenuation effect.

The embodiment of the invention has the beneficial effects that: the automatic brake device is added on the basis of the electric wheelchair, the distance between the automatic brake device and a barrier can be automatically monitored, the wheelchair is controlled to stop running, collision is prevented, the occurrence probability of accidents is reduced, property loss is reduced, personal safety of a user is protected, the anti-collision device and the damping device are also added, the user can be effectively protected even if the anti-collision device is impacted, and the safety performance of the wheelchair is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

The electric wheelchair with collision avoidance of the present invention will be described in further detail with reference to the accompanying drawings and the embodiments.

FIG. 1 is a schematic structural view of an electric wheelchair with a collision avoidance function according to the present invention;

FIG. 2 is a schematic structural view of an electric wheelchair with a collision avoidance function according to the present invention;

FIG. 3 is a schematic side view of the electric wheelchair with anti-collision function according to the present invention;

fig. 4 is an exploded view of the front wheel of the electric wheelchair with anti-collision function according to the present invention.

In the figure: 1-a front side cover; 101-front distance measurement induction module; 102-a front pressure sensing module; 2-rear side cover; 3-left side cover; 301-left ranging sensing module; 302-left pressure sensing module; 4-right side cover; 401-right ranging sensing module; 402-right pressure sensing module; 5-front wheels; 51-small rubber wheel; 52-large rubber wheel; 53-a second fixation plate; 54-a sponge cushion; 55-a sponge support plate; 56-wheel axle drive connection; 57-a first fixing plate; 58-hub inner shield; 59-screws; 510-hub outer shield; 511-Small roller rubber; 512-small roller frame; 513-needle bearings; 514-a gasket; 515-roller axle fixing assembly; 521-large roller rubber; 522-big roller framework; 6-rear shock-proof device; 601-an elastic member; 602-a ferrule; 603-clamping column; 7-left shock mounting; 8-right shock-proof device; 9-hand brake; 10-front shock-proof device.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

One embodiment of the present invention is shown in fig. 1 to 3, and the embodiment provides an electric wheelchair with an anti-collision function, which comprises a wheelchair main body, wherein an anti-collision assembly, a brake assembly and a moving assembly are arranged on the wheelchair main body.

The anti-collision assembly comprises a distance measurement sensing module, a pressure sensing module, a control module, a prompt module and a cover plate assembly.

The distance measurement sensing module is electrically connected with the control module and used for detecting the distance between the electric wheelchair and an object in the moving process.

The pressure sensing module is electrically connected with the control module and used for sensing collision pressure.

The control module is electrically connected with the brake assembly and used for controlling the electric wheelchair to move or stop.

The brake component is used for controlling the action component to move or stop.

The prompt module is electrically connected with the control module and used for giving out a prompt before collision.

The shroud plate assembly is mounted on the outside of the wheelchair body.

In a preferred embodiment of the present invention, the shroud assembly of the electric wheelchair having a collision avoidance function includes a front shroud 1, a rear shroud 2, a left shroud 3, and a right shroud 4.

The front side cover 1 is mounted on the front side of the wheelchair main body.

The rear cover 2 is mounted on the rear side of the wheelchair main body.

The left side cover 3 is mounted on the left side of the wheelchair main body.

The right side cover 4 is installed on the right side of the wheelchair main body.

The technical effects are as follows: the periphery of the wheelchair is provided with an anti-collision cover plate to protect a user.

In a preferred embodiment of the present invention, at least four distance measuring sensing modules of the electric wheelchair with an anti-collision function are respectively mounted on the outer sides of the front side cover 1, the rear side cover 2, the left side cover 3 and the right side cover 4.

The number of the pressure sensing modules is at least four, and the pressure sensing modules are respectively arranged on the outer sides of the front side cover 1, the rear side cover 2, the left side cover 3 and the right side cover 4.

The technical effects are as follows: the wheelchair detection device is used for detecting the distance between the wheelchair main body and a front obstacle and detecting the impact force applied to the wheelchair.

In a preferred embodiment of the present invention, the brake assembly of the electric wheelchair with collision avoidance function comprises a hand brake 9 and a full brake mechanism.

The full-braking mechanism is used for limiting the action assembly to turn and walk.

The technical effects are as follows: for deactivating the wheelchair.

In a preferred embodiment of the present invention, the action assembly of the electric wheelchair with collision avoidance includes a front wheel 5 and a rear wheel.

And auxiliary brake teeth are fixed on the rear wheel.

The full-braking mechanism comprises a full-braking limiting piece and a full-braking internal gear.

The hand brake 9 can prize the full-brake limiting piece, so that the full-brake limiting piece is clamped with the full-brake internal gear piece, and the full-brake limiting piece is clamped with the auxiliary brake gear to limit the steering and walking of the rear wheel.

The technical effects are as follows: used for controlling the wheelchair to stop moving.

In a preferred embodiment of the present invention, the integral structure of the front wheel 5 of the electric wheelchair with collision avoidance function includes a detachable hub and a wheel body.

The wheel body comprises a plurality of large rubber wheels 52 and a plurality of small rubber wheels 51 which are detachable.

The wheel surface of the wheel body is enclosed by the wheel surface of the large rubber wheel 52 and the wheel surface of the small rubber wheel 51, and the large rubber wheel 52 and the small rubber wheel 51 drive the front wheel 5 to laterally move transversely by rolling around the central shaft of the large rubber wheel 52 and the small rubber wheel 51.

The technical effects are as follows: the in-situ steering of the wheelchair is realized, so that the electric wheelchair can freely pass through a narrow space.

In a preferred embodiment of the present invention, the wheelchair main body of the electric wheelchair with anti-collision function is further provided with a shock-proof device, which includes an elastic member 601, a sleeve 602 and a clamp column 603.

The elastic member 601 is sleeved on the clamping column 603, one end of the elastic member exceeds the clamping column 603, and the other end of the elastic member is fixedly connected with the clamping column 603.

One position of the inner side wall of the cutting sleeve 602 extends inwards along the radial direction to form a clamping platform.

One end of the cutting sleeve 602 is fixed on the wheelchair main body.

One end of the elastic member 601 beyond the clamping column 603 abuts against the clamping table.

The other end of the latch 603 remote from the elastic member 601 is fixed to the hood plate assembly.

The technical effects are as follows: when vibration occurs, the elastic member 601 plays a role in buffering, and impact on a user is reduced.

In a preferred embodiment of the present invention, four sets of the shock absorbers of the electric wheelchair having the collision avoidance function are respectively disposed between the front side cover 1, the rear side cover 2, the left side cover 3, the right side cover 4, and the wheelchair main body.

The technical effects are as follows: the shock attenuation can all be realized in different position, promotes the shock attenuation effect.

Another embodiment of the present invention is shown in fig. 1 to 4, and the embodiment provides an electric wheelchair with an anti-collision function, which includes a wheelchair main body, and the wheelchair main body is provided with an anti-collision assembly, a brake assembly and a traveling assembly.

The anti-collision assembly comprises a distance measurement sensing module, a pressure sensing module, a control module, a prompt module and a cover plate assembly.

The distance measurement sensing module is electrically connected with the control module and used for detecting the distance between the electric wheelchair and an object in the moving process.

The pressure sensing module is electrically connected with the control module and used for sensing collision pressure.

The control module is electrically connected with the brake assembly and used for controlling the electric wheelchair to move or stop.

The brake component is used for controlling the action component to move or stop.

The prompt module is electrically connected with the control module and used for giving out a prompt before collision.

The shroud plate assembly is mounted on the outside of the wheelchair body.

In a preferred embodiment of the present invention, the shroud assembly of the electric wheelchair having a collision avoidance function includes a front shroud 1, a rear shroud 2, a left shroud 3, and a right shroud 4.

The front side cover 1 is mounted on the front side of the wheelchair main body.

The rear cover 2 is mounted on the rear side of the wheelchair main body.

The left side cover 3 is mounted on the left side of the wheelchair main body.

The right side cover 4 is installed on the right side of the wheelchair main body.

The technical effects are as follows: the periphery of the wheelchair is provided with an anti-collision cover plate to protect a user.

In a preferred embodiment of the present invention, at least four distance measurement sensing modules of the electric wheelchair with an anti-collision function are respectively installed at the outer sides of the front side cover 1, the rear side cover 2, the left side cover 3 and the right side cover 4, and are divided into a front distance measurement sensing module 101, a rear distance measurement sensing module, a left distance measurement sensing module 301 and a right distance measurement sensing module 401.

The number of the pressure sensing modules is at least four, and the pressure sensing modules are respectively installed on the outer sides of the front side cover 1, the rear side cover 2, the left side cover 3 and the right side cover 4 and are divided into a front pressure sensing module 102, a rear pressure sensing module, a left pressure sensing module 302 and a right pressure sensing module 402.

The technical effects are as follows: the wheelchair detection device is used for detecting the distance between the wheelchair main body and a front obstacle and detecting the impact force applied to the wheelchair.

In a preferred embodiment of the present invention, the brake assembly of the electric wheelchair with collision avoidance function comprises a hand brake 9 and a full brake mechanism.

The full-braking mechanism is used for limiting the action assembly to turn and walk.

The technical effects are as follows: for deactivating the wheelchair.

In a preferred embodiment of the present invention, the action assembly of the electric wheelchair with collision avoidance includes a front wheel 5 and a rear wheel.

And auxiliary brake teeth are fixed on the rear wheel.

The full-braking mechanism comprises a full-braking limiting piece and a full-braking internal gear.

The hand brake 9 can prize the full-brake limiting piece, so that the full-brake limiting piece is clamped with the full-brake internal gear piece, and the full-brake limiting piece is clamped with the auxiliary brake gear to limit the steering and walking of the rear wheel.

The technical effects are as follows: used for controlling the wheelchair to stop moving.

In a preferred embodiment of the present invention, the integral structure of the front wheel 5 of the electric wheelchair with collision avoidance function includes a detachable hub and a wheel body.

The wheel body comprises a plurality of large rubber wheels 52 and a plurality of small rubber wheels 51 which are detachable.

The wheel surface of the wheel body is enclosed by the wheel surface of the large rubber wheel 52 and the wheel surface of the small rubber wheel 51, and the large rubber wheel 52 and the small rubber wheel 51 drive the front wheel 5 to laterally move transversely by rolling around the central shaft of the large rubber wheel 52 and the small rubber wheel 51.

The large rubber wheels 52 and the small rubber wheels 51 are alternately arranged to form a complete outer wheel surface of the front wheel 5; the large rubber wheels 52 are uniformly distributed on the periphery of the front wheel 5 in an equal angle, the small rubber wheels 51 are uniformly distributed on the periphery of the front wheel 5 in an equal angle, and each small rubber wheel 51 fills the gap between two adjacent large rubber wheels 52.

The hub comprises a hub inner protecting cover 58, a first fixing plate 57, a wheel shaft driving connecting piece 56, a second fixing plate 53 and a hub outer protecting cover 510 which are detachably distributed from inside to outside along the axial direction of the front wheel 5;

the wheel body comprises a detachable sponge cushion 54 and a sponge supporting plate 55 which are distributed along the radial direction of the universal wheel; the foam pad 54 of the wheel body engages the axle drive connection 56 of the hub.

The wheel shaft driving connecting piece 56 is arranged in the center of the universal wheel, and the middle part of the wheel shaft driving connecting piece is provided with a through hole for being fixedly connected with a front shaft of the electric wheelchair; grooves are formed in the periphery of the axle drive connection 56 for receiving the foam pad 54.

The spongy cushions 54 are uniformly distributed on the periphery of the wheel axle driving connecting piece 56 and are attached to the wheel axle driving connecting piece 56, and one spongy supporting plate 55 is connected to the outer part of each spongy cushion 54, which is far away from the wheel axle driving connecting piece 56; the sponge supporting plate 55 covers the outer peripheral surface of the sponge pad 54; the sponge supporting plates 55 correspond to the sponge pads 54 one by one.

The small rubber wheel 51 comprises a small roller rubber 511, a small roller frame 512, a needle bearing 513, a gasket 514 and a roller shaft fixing assembly 515;

and, the large rubber wheel includes a large roller rubber 521, a large roller frame 522, the needle roller bearing 513, the gasket 514, and the roller shaft fixing assembly 515.

The roller shaft fixing component 515 is provided with a latch, and is used for being matched with the first fixing plate 57 and the second fixing plate 53; the roller shaft fixing component 515 is provided with a latch for matching with the first fixing plate 57 and the second fixing plate 53.

A first card slot group and a second card slot group are alternately arranged on the first fixing plate 57; the first clamping groove set comprises two radially distributed clamping grooves for matching with the clamping teeth on the roller shaft fixing component 515 of the large rubber wheel 52, and the second clamping groove set comprises two radially distributed clamping grooves for matching with the clamping teeth on the roller shaft fixing component 515 of the small rubber wheel 51; a third clamping groove is formed between the first clamping groove group and the second clamping groove group and is used for being matched with a clamping tooth on the hub inner protecting cover 58;

the first card slot group and the second card slot group are alternately arranged on the second fixing plate 53; the first clamping groove set comprises two radially distributed clamping grooves for matching with the clamping teeth on the roller shaft fixing component 515 of the large rubber wheel 52, and the second clamping groove set comprises two radially distributed clamping grooves for matching with the clamping teeth on the roller shaft fixing component 515 of the small rubber wheel 51; and the third clamping groove is arranged between the first clamping groove group and the second clamping groove group and is used for being matched with the clamping teeth on the hub outer protecting cover 510.

A first screw hole is formed in the hub inner protecting cover 58, a second screw hole is formed in the first fixing plate 57, and the first screw hole is matched with the second screw hole; the hub outer protecting cover 510 is provided with a third screw hole, the second fixing plate 53 is provided with a fourth screw hole, and the third screw hole is matched with the fourth screw hole.

The technical effects are as follows: the in-situ steering of the wheelchair is realized, so that the electric wheelchair can freely pass through a narrow space.

In a preferred embodiment of the present invention, the wheelchair main body of the electric wheelchair with anti-collision function is further provided with a shock-proof device, which includes an elastic member 601, a sleeve 602 and a clamp column 603.

The elastic member 601 is sleeved on the clamping column 603, one end of the elastic member exceeds the clamping column 603, and the other end of the elastic member is fixedly connected with the clamping column 603.

One position of the inner side wall of the cutting sleeve 602 extends inwards along the radial direction to form a clamping platform.

One end of the cutting sleeve 602 is fixed on the wheelchair main body.

One end of the elastic member 601 beyond the clamping column 603 abuts against the clamping table.

The other end of the latch 603 remote from the elastic member 601 is fixed to the hood plate assembly.

The anti-vibration device comprises four sets of a left anti-vibration device 7, a right anti-vibration device 8, a front anti-vibration device 10 and a rear anti-vibration device 6.

The technical effects are as follows: when vibration occurs, the elastic member 601 plays a role in buffering, and impact on a user is reduced.

In a preferred embodiment of the present invention, four sets of the shock absorbers of the electric wheelchair having the collision avoidance function are respectively disposed between the front side cover 1, the rear side cover 2, the left side cover 3, the right side cover 4, and the wheelchair main body.

The technical effects are as follows: the shock attenuation can all be realized in different position, promotes the shock attenuation effect.

The embodiment of the invention has the beneficial effects that: the automatic brake device is added on the basis of the electric wheelchair, the distance between the automatic brake device and a barrier can be automatically monitored, the wheelchair is controlled to stop running, collision is prevented, the occurrence probability of accidents is reduced, property loss is reduced, personal safety of a user is protected, the anti-collision device and the damping device are also added, the user can be effectively protected even if the anti-collision device is impacted, and the safety performance of the wheelchair is improved.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

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