CN219700345U - Wheelchair controller and electric wheelchair - Google Patents

Abstract

The utility model provides a wheelchair controller and an electric wheelchair, which relate to the technical field of electric wheelchairs and are used for solving the technical problem that an operation handle of the electric wheelchair cannot be suitable for a driver with deformed hands to cause operation difficulty. The operating handle is rotatably installed on the handrail through the connecting component left and right, so that the installation angle of the operating handle is adjustable, a driver with deformed hands can be ensured to adjust the installation angle of the operating handle according to the hand condition of the driver, multiple control gesture selections of the driver are met, and driving experience and driving comfort level are improved.

Description

Wheelchair controller and electric wheelchair

Technical Field

The utility model relates to the technical field of electric wheelchairs, in particular to a wheelchair controller and an electric wheelchair.

Background

An operating handle is arranged on the armrest of the electric wheelchair and is used for controlling the running direction or the running speed of the electric wheelchair; in the related art, an arm of a driver is erected on the arm rest, an operation handle is fixedly arranged at the end part of the arm rest, the hand of the driver is erected on the operation handle, the driver pushes a rocker of the operation handle forwards to drive an electric wheelchair to run, and the driver pushes the rocker of the operation handle backwards to drive the electric wheelchair to retreat.

However, the operating handle in the related art is not suitable for a driver with deformed hands, resulting in difficulty in operation of the driver.

Disclosure of Invention

In view of the above, the embodiments of the present utility model provide a wheelchair controller and an electric wheelchair, so as to solve the problem that the operation handle in the related art cannot be applied to a driver with deformed hands, which results in difficult operation of the driver.

In order to achieve the above object, the embodiment of the present utility model provides the following technical solutions:

an embodiment of the present utility model provides a wheelchair controller, including: the wheelchair comprises a connecting assembly and an operating handle, wherein a first end of the connecting assembly is fixedly connected with one armrest of a pair of armrests of the wheelchair, a bottom of the operating handle in the vertical direction is rotatably connected with a second end of the connecting assembly, and the operating handle is configured to rotate between a first position and a second position or is configured to be stationary at any position between the first position and the second position.

In one achievable embodiment, the connection assembly comprises: the first connecting component is positioned below the operating handle along the vertical direction and is fixedly connected with the bottom of the operating handle; one end of the second connecting component is configured to be fixedly connected with the handrail, the other end of the second connecting component is located below the first connecting component along the vertical direction, and the first connecting component is rotationally connected with the other end of the second connecting component.

In an implementation embodiment, the first connection assembly includes an adapter plate, the adapter plate is fixedly connected with the bottom of the operation handle, and a first connection hole is formed in the adapter plate; the second connecting assembly comprises a connecting rod and a supporting plate, the connecting rod is configured to be fixedly connected with a mounting hole of the handrail, one end of the supporting plate is fixedly connected with the end part of the connecting rod exposed out of the mounting hole, the other end of the supporting plate is far away from the connecting rod and extends, the supporting plate is attached to the adapter plate, the supporting plate is located below the adapter plate along the vertical direction, and a second connecting hole is formed in the supporting plate; the first connecting assembly further comprises a rotating shaft, the rotating shaft is provided with a third end and a fourth end which are opposite to each other along the vertical direction, the third end is fixedly connected with the first connecting hole, and the fourth end is rotatably connected with the second connecting hole.

In an embodiment, a third connecting hole is further formed in the adapter plate, a limiting sliding groove is further formed in the supporting plate, the first connecting assembly further comprises a limiting shaft, the limiting shaft is provided with a fifth end and a sixth end which are opposite to each other in the vertical direction, the fifth end is fixedly connected with the third connecting hole, and the sixth end is slidably connected in the limiting sliding groove.

In an embodiment, the limit sliding groove is a through groove penetrating through the support plate, and the sixth end penetrates through the limit sliding groove and is slidably connected in the limit sliding groove.

In one embodiment, the support plate has a first surface and a second surface opposite to each other along the vertical direction, and the first surface is fitted with the adapter plate; the first connecting assembly further comprises a first fixing piece, and the first fixing piece is connected with the sixth end and is abutted with the second surface.

In one embodiment, the limit chute is an arc-shaped chute with a preset radius of curvature.

In one practical embodiment, the outer peripheral wall of the connecting rod is provided with a plurality of first threaded holes, and the plurality of first threaded holes are arranged at intervals along the axial direction of the connecting rod; the first threaded holes are configured to correspond to the second threaded holes arranged on the handrail one by one; the wheelchair controller also includes a threaded connection connected to both the corresponding first and second threaded bores.

In one possible embodiment, the outer peripheral wall of the connecting rod is provided with a connecting protrusion configured to be fixedly connected with a connecting groove in the mounting hole while the connecting rod is configured to be fixedly connected with the mounting hole of the armrest.

In one possible embodiment, the connecting rod has a wiring channel from which the terminal end of the operating handle is configured to extend into the armrest.

The embodiment of the utility model also provides an electric wheelchair comprising the wheelchair controller described above.

The embodiment of the utility model provides a wheelchair controller and an electric wheelchair, wherein the wheelchair controller comprises a connecting component and an operating handle, a first end of the connecting component is fixedly connected with one armrest of a pair of armrests of the wheelchair, the bottom of the operating handle in the vertical direction is rotationally connected with a second end of the connecting component, and the operating handle is configured to rotate between a first position and a second position or is configured to be stationary at any position between the first position and the second position. The operating handle is rotatably installed on the handrail through the connecting component left and right, so that the installation angle of the operating handle is adjustable, a driver with deformed hands can be ensured to adjust the installation angle of the operating handle according to the hand condition of the driver, multiple control gesture selections of the driver are met, and driving experience and driving comfort level are improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a wheelchair controller according to an embodiment of the present utility model mounted on an electric wheelchair;

FIG. 2 is an enlarged view of region A of FIG. 1;

FIG. 3 is a schematic view showing a first use state of the wheelchair controller according to the embodiment of the present utility model;

FIG. 4 is a second schematic view of a wheelchair controller according to an embodiment of the present utility model;

FIG. 5 is a schematic diagram of an exploded construction of a wheelchair controller according to an embodiment of the present utility model;

FIG. 6 is a schematic diagram of a wheelchair controller according to an embodiment of the present utility model;

FIG. 7 is a schematic structural view of a first connection assembly of a wheelchair controller according to an embodiment of the present utility model;

FIG. 8 is a schematic structural view of a second connection assembly of the wheelchair controller according to an embodiment of the present utility model;

fig. 9 is an enlarged view of region B in fig. 5.

Reference numerals illustrate:

100: an operation handle;

101: a terminal;

200: a connection assembly;

201: a first connection assembly; 202: a second connection assembly;

2011: an adapter plate; 2012: a rotation shaft; 2013: a limiting shaft; 2014: a second fixing member; 2015: a first fixing member;

20111: a first connection hole; 20112: a third connection hole; 20113: a fourth connection hole;

2021: a connecting rod; 2022: a support plate; 2023: connecting a vertical plate;

20221: a second connection hole; 20222: limiting sliding grooves; 20211: a connection protrusion; 20231: a through hole;

300: an armrest;

301: a mounting hole; 302: a second threaded hole;

3011: and a connecting groove.

Detailed Description

As described in the background art, the operation handle of the electric wheelchair in the related art is not suitable for the driver with deformed hands, and the research of the technical staff finds that the reason for the problem is that the operation handle of the electric wheelchair is fixedly installed on the armrest, the installation position and the angle of the operation handle cannot be adjusted, and the driver drives the electric wheelchair to advance or retreat by pushing the rocker of the operation handle. However, the driver with deformed hands cannot use the operating handle installed toward the front, which affects the use of the rocker lever by the driver, resulting in difficulty in the operation of the driver.

According to the wheelchair controller, the operating handles are rotatably arranged on the handrails of the wheelchair left and right through the connecting assembly, so that the installation angle of the operating handles is adjustable, a driver with deformed hands can adjust the installation angle of the operating handles according to the hand conditions of the driver, multiple control gesture selections of the driver are met, and driving experience and driving comfort are improved.

In order to make the above objects, features and advantages of the embodiments of the present utility model more comprehensible, the technical solutions of the embodiments of the present utility model will be described clearly and completely with reference to the accompanying drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to fig. 4, fig. 1 is a schematic structural diagram of a wheelchair controller provided by the embodiment of the present utility model mounted on an electric wheelchair, fig. 2 is an enlarged view of a region a in fig. 1, fig. 3 is a schematic diagram of a use state of the wheelchair controller provided by the embodiment of the present utility model, and fig. 4 is a schematic diagram of a use state of the wheelchair controller provided by the embodiment of the present utility model; the wheelchair controller of the embodiment of the present utility model is mounted on one armrest 300 of a pair of armrests of a wheelchair for driving the wheelchair to travel; according to practical situations, the wheelchair controller may be mounted on both armrests 300 of the wheelchair, and the embodiment of the present utility model is not limited thereto.

The wheelchair controller includes: and a connection assembly 200 having a first end and a second end, the first end and the second end being opposite in an extending direction of the armrest 300, the first end being configured to be fixedly coupled with an end of one armrest 300 of a pair of armrests of the wheelchair, the second end being disposed apart from the armrest 300.

The wheelchair controller further includes: the operating handle 100, the bottom of the operating handle 100 in the vertical direction (vertical direction shown in fig. 2) is rotatably connected with the second end of the connection assembly 200, and the operating handle 100 is configured to rotate between a first position, which may be a position at rest after the operating handle 100 is rotated rightward as shown in fig. 3, and a second position, which may be a position at rest after the operating handle 100 is rotated leftward as shown in fig. 4, that is, the operating handle 100 is capable of being rotated leftward and rightward.

It should be noted that, the angle between the first position and the second position may be set according to the actual situation, which is not limited by the embodiment of the present utility model.

The operating handle 100 is further configured to rest at any position between the first position and the second position, that is, the operating handle 100 is rotated rightward and then rests at the first position, the operating handle 100 is rotated leftward and then rests at the second position, and the operating handle 100 can also be rotated leftward and rightward and then rests at any position between the first position and the second position, so as to satisfy various operating gesture selections of the driver.

The wheelchair controller of the embodiment of the present utility model includes a connection assembly 200 and an operating handle 100, a first end of the connection assembly 200 is configured to be fixedly connected to one armrest 300 of a pair of armrests of the wheelchair, the operating handle 100 is rotatably connected to a second end of the connection assembly 200 along a bottom portion in a vertical direction (vertical direction shown in fig. 2), and the operating handle 100 is configured to be rotated between a first position and a second position, or the operating handle 100 is configured to be stationary at any position between the first position and the second position. The operation handle 100 is rotatably installed on the armrest 300 from side to side through the connection assembly 200, so that the installation angle of the operation handle 100 is adjustable, a driver with deformed hands is ensured to adjust the installation angle of the operation handle 100 according to the hand condition of the driver, multiple control gesture selections of the driver are met, and driving experience and driving comfort are improved.

In an embodiment of the present utility model, the connection assembly 200 may include: a first connection assembly 201 and a second connection assembly 202, the first connection assembly 201 being located below the operation handle 100 in a vertical direction (vertical direction shown in fig. 2) and fixedly connected to a bottom of the operation handle 100; one end of the second connection assembly 202 is configured to be fixedly connected with the armrest 300, the other end of the second connection assembly 202 is located below the first connection assembly 201 in the vertical direction, and the first connection assembly 201 is rotatably connected with the other end of the second connection assembly 202. The first connection assembly 201 rotates relative to the second connection assembly 202 and rotates the operating handle 100 such that the operating handle 100 is rotatably mounted on the armrest 300.

Referring to fig. 5 to 8, fig. 5 is an exploded structural schematic view of a wheelchair controller according to an embodiment of the present utility model, fig. 6 is a structural schematic view of a wheelchair controller according to an embodiment of the present utility model, fig. 7 is a structural schematic view of a first connection assembly of a wheelchair controller according to an embodiment of the present utility model, and fig. 8 is a structural schematic view of a second connection assembly of a wheelchair controller according to an embodiment of the present utility model; in the embodiment of the present utility model, the first connection assembly 201 includes an adapter plate 2011, the adapter plate 2011 is horizontally disposed (horizontally disposed as shown in fig. 5), the adapter plate 2011 is attached to the bottom of the operating handle 100, a fourth connection hole 20113 is disposed on the adapter plate 2011, a fifth connection hole corresponding to the fourth connection hole 20113 is disposed on the bottom of the operating handle 100, and a bolt is connected to both the fourth connection hole 20113 and the fifth connection hole, so that the adapter plate 2011 is fixedly connected to the bottom of the operating handle 100.

The second connection assembly 202 may include a connection rod 2021 and a support plate 2022, the connection rod 2021 being configured to be fixedly connected with the mounting hole 301 of the armrest 300, and an end portion of the connection rod 2021 being exposed outside the mounting hole 301; the support plate 2022 is horizontally disposed (horizontally disposed as shown in fig. 5), one end of the support plate 2022 is fixedly connected with an end portion of the connecting rod 2021 exposed outside the mounting hole 301, the other end of the support plate 2022 extends away from the connecting rod 2021, the support plate 2022 is attached to the adapter plate 2011, and the support plate 2022 is located below the adapter plate 2011 along a vertical direction (vertical direction as shown in fig. 5).

The support plate 2022 is provided with a second connection hole 20221, the adapter plate 2011 is further provided with a first connection hole 20111, and the second connection hole 20221 corresponds to the first connection hole 20111.

The first connection assembly 201 further includes a rotation shaft 2012, the rotation shaft 2012 is vertically disposed, the rotation shaft 2012 has a third end and a fourth end opposite to each other in a vertical direction, the third end is fixedly connected with the first connection hole 20111, and the fourth end is rotationally connected with the second connection hole 20221, so that the adapter plate 2011 can rotate around the rotation shaft 2012 relative to the support plate 2022, that is, the first connection assembly 201 can rotate around the rotation shaft 2012 relative to the second connection assembly 202, and drive the operation handle 100 to rotate, so that the operation handle 100 is rotatably mounted on the armrest 300 left and right.

In the above embodiment of the present utility model, the adapter plate 2011 is further provided with a third connecting hole 20112, the support plate 2022 is further provided with a limiting chute 20222, the first connecting assembly 201 further includes a limiting shaft 2013, the limiting shaft 2013 has a fifth end and a sixth end opposite to each other along a vertical direction, the fifth end is fixedly connected with the third connecting hole 20112, and the sixth end is slidably connected in the limiting chute 20222, so that when the first connecting assembly 201 rotates around the rotation shaft 2012 relative to the second connecting assembly 202, the limiting shaft 2013 slides in the limiting chute 20222 to limit the rotation position of the first connecting assembly 201, so that the operating handle 100 can be stationary in the first position after rotating rightward, and can be stationary in the second position after rotating leftward.

Meanwhile, the sliding connection between the sixth end and the limiting chute 20222 can further improve the connection stability of the operating handle 100.

In the above embodiment of the present utility model, the limiting chute 20222 is an arc-shaped chute with a predetermined radius of curvature. That is, the operating handle 100 rotates around the arc-shaped groove with the mounting point of the rotary shaft 2012 as the rotation center.

In the above embodiment of the present utility model, the limiting chute 20222 is a through slot penetrating through the supporting plate 2022, and the sixth end penetrates through the limiting chute 20222 and is slidably connected in the limiting chute 20222.

In the above-described embodiment of the present utility model, the support plate 2022 has opposite first and second surfaces in the vertical direction (vertical direction shown in fig. 5 and 8), the first surface being close to the interposer 2011 and being fitted with the interposer 2011; the first connecting assembly 201 further includes a first fixing element 2015, where the first fixing element 2015 is sleeved on the sixth end of the limiting shaft 2013, so that the first fixing element 2015 is connected with the sixth end and abuts against the second surface. The first fixing part 2015 is used for fixing the limiting shaft 2013, and preventing the limiting shaft 2013 from sliding out of the limiting chute 20222.

In the above embodiment of the present utility model, the first connecting assembly 201 further includes a second fixing member 2014, where the second fixing member 2014 is sleeved on the fourth end of the rotating shaft 2012, such that the second fixing member 2014 is connected to the fourth end and abuts against the second surface. The second fixing member 2014 is used for fixing the rotary shaft 2012 and preventing the rotary shaft 2012 from sliding out of the second connecting hole 20221.

It should be noted that, the limiting shaft 2013 and the rotating shaft 2012 may be integrally formed with the adapter plate 2011.

With continued reference to fig. 6 and 8, in an embodiment of the present utility model, the outer peripheral wall of the connecting rod 2021 is provided with a plurality of first screw holes, which are disposed at intervals along the axial direction of the connecting rod 2021; the plurality of first threaded holes are configured to correspond to the plurality of second threaded holes 302 provided on the armrest 300 one by one, and the plurality of second threaded holes 302 are provided at intervals along the axial direction of the armrest 300; the wheelchair controller further comprises a threaded connection member, wherein the threaded connection member is connected with the corresponding first threaded hole and the corresponding second threaded hole 302, and further fixes the connecting rod 2021 in the mounting hole 301, so that the connecting rod 2021 is prevented from loosening in the wheelchair running process.

Meanwhile, when the connecting rod 2021 is provided at a different position in the mounting hole 301, the first screw hole corresponds to the other second screw holes 302; that is, when the connecting rod 2021 is completely disposed in the mounting hole 301, each of the first screw holes corresponds to one of the second screw holes 302, so that the connecting rod 2021 is fixed in the mounting hole 301; when the connecting rod 2021 is not completely disposed in the mounting hole 301, a portion of the connecting rod 2021 protrudes outside the mounting hole 301, the first screw hole and the second screw hole 302 corresponding to each other are staggered, and the first screw hole is connected with one of the second screw holes 302 corresponding to the adjacent first screw hole, so that the connecting rod 2021 is fixed in the mounting hole 301. To function as an adjustment for the mounting position of the connecting rod 2021 such that the mounting position of the second connecting assembly 202 disposed on the armrest 300 is adjustable.

With continued reference to fig. 3 and 4, that is, the installation position of the operation handle 100 is adjustable, the operation handle 100 can be adjusted back and forth (back and forth as shown in fig. 3 and 4) to be suitable for various practical situations.

Referring to fig. 5, 8 and 9, fig. 9 is an enlarged view of region B of fig. 5; in the above-described embodiment of the present utility model, the outer peripheral wall of the connection rod 2021 is provided with the connection protrusion 20211, and the connection protrusion 20211 is configured to be fixedly connected with the connection groove 3011 in the mounting hole 301 while the connection rod 2021 is configured to be fixedly connected with the mounting hole 301 of the armrest 300. Before connecting rod 2021 stretches into mounting hole 301, firstly aim at connecting groove 3011 with connecting boss 20211, make connecting rod 2021 be connected with mounting hole 301 again, when restricting connecting rod 2021 rotatory in mounting hole 301, realize connecting rod 2021's location and connect, ensure that first screw hole can correspond with second screw hole 302, make things convenient for the connection of threaded connection spare and first screw hole and second screw hole 302, improve assembly efficiency.

With continued reference to fig. 5 and 8, in the above-described embodiment of the present utility model, the connecting rod 2021 further has a wiring passage communicating with the mounting hole 301, and the terminal 101 of the operating handle 100 is configured to extend from the wiring passage into the mounting hole 301 and into the armrest 300, so that the terminal 101 of the operating handle 100 can be electrically connected with other devices of the wheelchair, achieving an effect of controlling the wheelchair.

The wiring channel and the mounting hole 301 not only play a role in protecting the connecting wire, but also improve the overall appearance of the wheelchair controller.

With continued reference to fig. 5 and 8, in the above-described embodiment of the present utility model, the second connection assembly 202 may further include a connection riser 2023, the connection riser 2023 being vertically disposed (in the vertical direction shown in fig. 5 and 8) and fixedly connected with an end portion of the connection rod 2021 exposed outside the mounting hole 301, the connection riser 2023 being provided with a through hole 20231, the through hole 20231 being in communication with a connection passage of the connection rod 2021, so as to ensure that the terminal 101 of the operation handle 100 can extend from the connection passage into the mounting hole 301.

The support plate 2022 is horizontally disposed (horizontally disposed as shown in fig. 5 and 8), one end of the support plate 2022 is fixedly connected with the connecting riser 2023, the other end of the support plate 2022 extends away from the connecting rod 2021, and the support plate 2022 is attached to the adapter plate 2011.

Wherein the support plate 2022 and the connecting riser 2023 may be integrally formed as a structural member.

The embodiment of the utility model also provides an electric wheelchair, which comprises the wheelchair controller.

In summary, embodiments of the present utility model provide a wheelchair controller and an electric wheelchair, the wheelchair controller including a connection assembly 200 and an operation handle 100, a first end of the connection assembly 200 being configured to be fixedly connected to one armrest 300 of a pair of armrests of the wheelchair, the operation handle 100 being rotatably connected to a second end of the connection assembly 200 along a bottom portion in a vertical direction (vertical direction shown in fig. 2), the operation handle 100 being configured to rotate between a first position and a second position, or the operation handle 100 being configured to rest at any position between the first position and the second position. The operation handle 100 is rotatably installed on the armrest 300 from side to side through the connection assembly 200, so that the installation angle of the operation handle 100 is adjustable, a driver with deformed hands is ensured to adjust the installation angle of the operation handle 100 according to the hand condition of the driver, multiple control gesture selections of the driver are met, and driving experience and driving comfort are improved.

In this specification, each embodiment or embodiment is described in a progressive manner, and each embodiment is mainly described by differences from other embodiments, and identical and similar parts between the embodiments are mutually referred.

It should be noted that references in the specification to "one embodiment," "an example embodiment," "some embodiments," etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.

Generally, terms should be understood at least in part by use in the context. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in a singular sense, or may be used to describe a combination of features, structures, or characteristics in a plural sense, at least in part depending on the context. Similarly, terms such as "a" or "an" may also be understood to convey a singular usage or a plural usage, depending at least in part on the context.

It should be readily understood that the terms "on … …", "above … …" and "above … …" in this disclosure should be interpreted in the broadest sense such that "on … …" means not only "directly on something", but also includes "on something" with intermediate features or layers therebetween, and "above … …" or "above … …" includes not only the meaning "on something" or "above" but also the meaning "above something" or "above" without intermediate features or layers therebetween (i.e., directly on something).

Further, spatially relative terms, such as "below," "beneath," "above," "over," and the like, may be used herein for ease of description to describe one element or feature's relationship to another element or feature as illustrated. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein interpreted accordingly.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (11)

1. A wheelchair controller, comprising: the wheelchair comprises a connecting assembly and an operating handle, wherein a first end of the connecting assembly is fixedly connected with one armrest of a pair of armrests of the wheelchair, a bottom of the operating handle in the vertical direction is rotatably connected with a second end of the connecting assembly, and the operating handle is configured to rotate between a first position and a second position or is configured to be stationary at any position between the first position and the second position.

2. The wheelchair controller of claim 1 wherein the connection assembly comprises: the first connecting component is positioned below the operating handle along the vertical direction and is fixedly connected with the bottom of the operating handle;

one end of the second connecting component is configured to be fixedly connected with the handrail, the other end of the second connecting component is located below the first connecting component along the vertical direction, and the first connecting component is rotationally connected with the other end of the second connecting component.

3. The wheelchair controller of claim 2 wherein the first connection assembly comprises an adapter plate fixedly connected to the bottom of the operating handle, the adapter plate having a first connection aperture disposed thereon;

the second connecting assembly comprises a connecting rod and a supporting plate, the connecting rod is configured to be fixedly connected with a mounting hole of the handrail, one end of the supporting plate is fixedly connected with the end part of the connecting rod exposed out of the mounting hole, the other end of the supporting plate is far away from the connecting rod and extends, the supporting plate is attached to the adapter plate, the supporting plate is located below the adapter plate along the vertical direction, and a second connecting hole is formed in the supporting plate;

the first connecting assembly further comprises a rotating shaft, the rotating shaft is provided with a third end and a fourth end which are opposite to each other along the vertical direction, the third end is fixedly connected with the first connecting hole, and the fourth end is rotatably connected with the second connecting hole.

4. The wheelchair controller of claim 3 wherein the adapter plate is further provided with a third connection hole, the support plate is further provided with a limiting chute, the first connection assembly further comprises a limiting shaft, the limiting shaft has a fifth end and a sixth end opposite to each other in the vertical direction, the fifth end is fixedly connected with the third connection hole, and the sixth end is slidably connected in the limiting chute.

5. The wheelchair controller of claim 4 wherein the limit chute is a through slot extending through the support plate and the sixth end extends through the limit chute and is slidably coupled within the limit chute.

6. The wheelchair controller of claim 5 wherein the support plate has opposed first and second surfaces along the vertical, the first surface conforming to the adapter plate;

the first connecting assembly further comprises a first fixing piece, and the first fixing piece is connected with the sixth end and is abutted with the second surface.

7. The wheelchair controller of claim 4 or 5 wherein the limit chute is an arcuate slot having a predetermined radius of curvature.

8. A wheelchair controller according to claim 3, wherein the outer peripheral wall of the connecting rod is provided with a plurality of first threaded holes spaced axially along the connecting rod;

the first threaded holes are configured to correspond to the second threaded holes arranged on the handrail one by one;

the wheelchair controller also includes a threaded connection connected to both the corresponding first and second threaded bores.

9. The wheelchair controller of claim 6 wherein the outer peripheral wall of the connecting rod is provided with a connection protrusion configured to fixedly connect with a connection slot in the mounting hole while the connecting rod is configured to fixedly connect with the mounting hole of the armrest.

10. A wheelchair controller according to claim 3, wherein the connecting rod has a wiring channel from which the wiring end of the operating handle is configured to extend into the armrest.

11. An electrically powered wheelchair comprising a wheelchair controller as claimed in any one of claims 1 to 10.