Driving device and electric wheelchair

Abstract

The utility model relates to the technical field of wheelchair drive assembly design, disclose a drive device and electric wheelchair, and drive device includes drive assembly and brake, and the outer peripheral side of drive assembly has the mounting surface, and the brake is connected in one end of drive assembly, and the brake is equipped with operating handle, and operating handle extends to the radial outside of brake, wherein, the mounting surface is perpendicular with the center surface of operating handle, and the center surface passes through the axis of drive assembly. In the embodiment, drive device can be installed in the left and right sides of electric wheelchair frame, since the center surface of operating handle of each drive device is perpendicular with the mounting surface of drive assembly, when left and right sides drive device installs, left side drive device and right side drive device can be approximately mirror image symmetry arrangement, and the operating handle of left side brake and the operating handle of right side brake can keep the azimuth consistency, ensure that left side drive device and right side drive device appearance consistency, improve the operation convenience.

Description

Technical Field

[0001] This utility model relates to the field of wheelchair drive components technology, and in particular to a drive device and an electric wheelchair. Background Technology

[0002] As an important type of assistive mobile device, electric wheelchairs typically rely on a drive unit for power. The drive unit includes a drive assembly and a brake located at one end of the drive assembly. The drive assembly drives the wheels of the electric wheelchair to rotate, and the operating handle on the brake can be used to brake the drive assembly.

[0003] Traditional electric wheelchairs typically have a drive unit on each side for propulsion and steering. The design of these drive units generally requires ensuring consistent cable routing angles, symmetrical mounting positions, and consistent brake handle positions and operating directions. Using identical drive units on both sides would result in inconsistent appearances and handle positions, affecting both aesthetic consistency and ease of use. Utility Model Content

[0004] The present invention aims to provide a drive device and an electric wheelchair to solve the technical problem that in the prior art, the use of the same structure on both the left and right sides of the drive device leads to inconsistent appearance of the drive devices on both sides, affecting the consistency of appearance and ease of operation.

[0005] The present invention addresses its technical problem by providing the following technical solution: a driving device is provided, comprising:

[0006] A drive assembly having a mounting surface on its outer peripheral side;

[0007] A brake, the brake being connected to one end of the drive assembly, the brake being provided with an operating handle extending to the radially outer side of the brake;

[0008] The mounting surface is perpendicular to the center surface of the operating handle, and the center surface passes through the axis of the drive assembly.

[0009] In this embodiment, when the drive unit can be installed on the left and right sides of the electric wheelchair frame, since the center plane of the operating handle of each drive unit is perpendicular to the mounting surface of the drive assembly, after the left and right drive units are installed, the left drive unit and the right drive unit can be set up in a roughly mirror-symmetrical manner. The operating handle of the left brake and the operating handle of the right brake can maintain the same orientation, ensuring the appearance consistency of the left drive unit and the right drive unit and improving the convenience of operation.

[0010] In some embodiments, the brake includes a housing and a braking mechanism disposed within the housing. An operating port is provided on the outer side wall of the housing. One end of the handle is connected to the braking mechanism, and the other end of the handle passes through the operating port and extends to the radially outer side of the housing.

[0011] In some embodiments, the housing is symmetrically arranged about the central plane.

[0012] In this embodiment, not only can the housings of the left and right brakes be mirror-symmetrical, ensuring the consistency of their appearance, but the left and right housings can also share a single mold, thereby significantly reducing manufacturing costs.

[0013] In some embodiments, the drive assembly includes a motor body and a reducer, wherein the reducer and the brake are respectively disposed at opposite ends of the motor body;

[0014] The reducer includes a housing, and the mounting surface is provided on the outer periphery of the housing.

[0015] In this embodiment, the mounting surface is designed on the reducer housing, so that the load-bearing force is transmitted from the electric wheelchair frame through the reducer housing to the output shaft end of the drive assembly. The entire transmission path only requires strengthening the reducer housing to meet the load-bearing requirements. There are almost no load-bearing requirements for the parts outside the reducer housing, which can save on material costs.

[0016] In other words, compared to designing the mounting surface on the outer side of the motor body, the power transmission path needs to pass through the housing of the drive component, the end cover of the drive component, and the gearbox housing before reaching the output shaft. The strength of the entire transmission path must be designed according to the load-bearing requirements, which will increase the strength requirements of these structural components, making the design more complex and requiring more materials.

[0017] In some embodiments, the mounting surface is located on the side of the housing opposite to the operating handle.

[0018] In this embodiment, the mounting surface is located on the side of the housing away from the operating handle. After the drive device is mounted on the mounting position on the wheelchair frame via the mounting surface, the operating handle is located on the side of the drive device away from the frame mounting position, thus avoiding interference between the operating handle and the frame and improving operational convenience.

[0019] In some embodiments, the motor body includes a housing and a first end cover and a second end cover disposed at opposite ends of the housing; the first end cover is connected between the housing and the enclosure, and the second end cover is connected between the housing and the shell.

[0020] The housing, the first end cover, and the second end cover are all symmetrically arranged about the central plane.

[0021] In this embodiment, the housing, the first end cover, and the second end cover are all symmetrically arranged with respect to the center plane. This not only ensures that the left housing, the first end cover, and the second end cover are mirror-symmetrical with the corresponding parts on the right side, thus ensuring consistency in appearance, but also allows the left housing, the first end cover, and the second end cover to share a set of molds with the corresponding parts on the right side, thereby significantly reducing production and manufacturing costs.

[0022] In some embodiments, the outer peripheral side of the housing is provided with a plurality of first heat dissipation fins, the outer peripheral side of the first end cover is provided with a plurality of second heat dissipation fins, and the outer peripheral side of the second end cover is provided with a plurality of third heat dissipation fins.

[0023] The plurality of first heat dissipation fins, the plurality of second heat dissipation fins, and the plurality of third heat dissipation fins are all symmetrically distributed about the central plane.

[0024] In this embodiment, the use of multiple first heat dissipation fins, multiple second heat dissipation fins, and multiple third heat dissipation fins can significantly improve heat dissipation efficiency and reduce the operating temperature of the drive device. Furthermore, the multiple first heat dissipation fins, multiple second heat dissipation fins, and multiple third heat dissipation fins are symmetrically distributed with respect to the center plane, ensuring that the first, second, and third heat dissipation fins on the left side are mirror-symmetrical with their corresponding components on the right side, thus ensuring visual consistency.

[0025] In some embodiments, the housing is provided with a plurality of first connection holes, the first end cover is provided with a plurality of second connection holes, and the second end cover is provided with a plurality of third connection holes. The plurality of first connection holes, the plurality of second connection holes, and the plurality of third connection holes are all symmetrically distributed with respect to the central surface.

[0026] The positions of each of the first connecting holes, each of the second connecting holes, and each of the third connecting holes are corresponding and connected.

[0027] In this embodiment, the multiple first connecting holes, multiple second connecting holes, and multiple third connecting holes are symmetrically distributed relative to the center plane, which can ensure the appearance consistency of the relevant connecting holes on the left and right driving devices, and ensure that the left housing, the first end cover, the second end cover, and other components can share a set of molds with the corresponding components on the right.

[0028] In some embodiments, the housing has a plurality of first fixing holes and the second end cap has a plurality of second fixing holes, and the plurality of first fixing holes and the plurality of second fixing holes are symmetrically distributed about the central plane.

[0029] In this embodiment, the multiple first fixing holes, multiple second fixing holes, and multiple third fixing holes are symmetrically distributed relative to the center plane, which can ensure the appearance consistency of the relevant fixing holes on the left and right driving devices.

[0030] The present invention also addresses its technical problem by employing the following technical solution: providing an electric wheelchair, including the drive device described in any of the above embodiments; and

[0031] The vehicle frame, on which the drive unit is mounted via the mounting surface.

[0032] Since the electric wheelchair includes the drive device described in the above embodiments, it also has the beneficial effects described in the above embodiments, which will not be repeated here. Attached Figure Description

[0033] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0034] Figure 1 This is a three-dimensional structural diagram of the driving device in one embodiment of the present invention, wherein the reference numeral S in the figure is the center surface of the operating handle;

[0035] Figure 2 This is a schematic diagram showing the left and right drive devices arranged in a mirror-symmetrical manner in an embodiment of this utility model.

[0036] Figure 3 This is a three-dimensional structural diagram of the brake in an embodiment of this utility model;

[0037] Figure 4 This is a three-dimensional structural schematic diagram of the driving device from another perspective in an embodiment of this utility model;

[0038] Figure 5 This is an exploded structural diagram of the shell, first end cover, second end cover, and housing in an embodiment of this utility model.

[0039] Explanation of reference numerals in the attached figures:

[0040] 100. Drive unit; 10. Drive assembly; 101. Mounting surface; 1010. Mounting hole; 11. Motor body; 110. Housing; 1101. First heat dissipation fin; 1102. First connecting hole; 111. First end cover; 1110. Second heat dissipation fin; 1111. Second connecting hole; 112. Second end cover; 1120. Third heat dissipation fin; 1121. Third connecting hole; 1122. Second fixing hole; 12. Reducer; 120. Housing; 20. Brake; 21. Operating handle; 22. Housing; 220. Operating port; 221. Bottom wall; 222. Side wall; 223. Flanged edge; 2220. First fixing hole; 23. Braking mechanism; 24. Handle sleeve; S. Center surface. Detailed Implementation

[0041] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as "connected" to another element, it can be directly on the other element, or one or more intermediate elements may exist between them. The terms "upper," "lower," "left," "right," "upper end," "lower end," "top," and "bottom," etc., used in this specification, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0042] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention.

[0043] Traditional electric wheelchairs typically have a drive unit on each side for propulsion and steering. The design of these drive units generally requires ensuring consistent cable routing angles, symmetrical mounting positions, and consistent brake handle positions and operating directions. Using identical drive units on both sides can lead to inconsistencies in their orientation, such as different positions of the control handles, affecting ease of operation and aesthetic consistency. To ensure consistent appearance and operational coordination, each drive unit must be custom-made to meet symmetry requirements. This results in structural differences in the components of the left and right drive units, necessitating the development of two separate molds to fit the components of each unit, significantly increasing manufacturing costs and complexity.

[0044] To address the aforementioned problems in the prior art, this utility model provides a drive device and an electric wheelchair. By providing a mounting surface for the drive device on the outer periphery of the drive assembly, and designing the mounting surface perpendicular to the center plane of the operating handle, the left and right drive devices can be arranged in a roughly mirror-symmetrical configuration. The operating handles of the left and right brakes can maintain consistent orientation, ensuring visual consistency between the left and right drive devices and improving operational convenience. Furthermore, the motor body, first and second end caps, and brake housing of the drive assembly are all designed with the center plane of the handle as the symmetrical plane. This ensures visual consistency between the left and right drive devices while allowing components such as the motor body, first end cap, second end cap, and housing on both sides to share molds, reducing manufacturing costs.

[0045] The following will be combined with the appendix Figures 1 to 5 The drive device 100 and the electric wheelchair provided in the embodiments of this utility model will be described in detail.

[0046] Please see Figure 1 and Figure 2 ,in, Figure 2 In the diagram, the symbol L represents the left drive unit 100, and the symbol R represents the right drive unit 100. It should be noted that the actual installation angles of the left and right drive units 100 can be flexibly adjusted according to actual installation requirements and conditions. This embodiment of the invention provides a drive unit 100, which can be applied to an electric wheelchair. The drive unit 100 includes a drive assembly 10 and a brake 20.

[0047] The outer peripheral side of the drive assembly 10 has a mounting surface 101. The brake 20 is connected to one end of the drive assembly 10. The brake 20 is provided with an operating handle 21, which extends to the radial outer side of the brake 20. The mounting surface 101 is perpendicular to the center plane S of the operating handle 21, and the center plane S passes through the axis of the drive assembly 10.

[0048] like Figure 1 As shown, the mounting surface 101 is located on the outer periphery of the drive assembly 10. The drive device 100 can be securely mounted on an external structure via the mounting surface 101. For example, the drive device 100 can be mounted on the frame of an electric wheelchair via the mounting surface 101. The mounting surface 101 is generally flat, and mounting holes 1010 may be provided on the mounting surface 101 to facilitate threaded connection with the external structure.

[0049] The operating handle 21 extends radially outward to facilitate operation by the user. By operating the operating handle 21, the user can switch the brake 20 between locked and unlocked states. When the brake 20 is in the locked state, it is locked with the drive shaft of the drive assembly 10, thereby braking the drive assembly 10. When the brake 20 is in the unlocked state, it is disengaged from the drive shaft of the drive assembly 10, allowing the drive assembly 10 to operate normally.

[0050] The operating handle 21 adopts a symmetrical structure design and is arranged symmetrically with respect to the center plane S. The operating handle 21 has a center plane S that is perpendicular to the mounting surface 101. The center plane S passes through the axis of the drive assembly 10 and forms a perpendicular relationship with the mounting surface 101.

[0051] In practical applications, the drive unit 100 can be mounted on the frame of an electric wheelchair. Specifically, mounting positions are provided on both the left and right sides of the frame, allowing the two drive units 100 to be mounted on their respective mounting positions. Since the center plane S of the operating handle 21 is perpendicular to the mounting surface 101 of the drive assembly 10, after the left and right drive units 100 are installed, the operating handles 21 of the left brake 20 and the right brake 20 can maintain consistent orientation (see...). Figure 2 This ensures that the appearance of the left drive unit 100 and the right drive unit 100 is consistent, and improves the ease of operation.

[0052] Please see Figure 3 , Figure 4 and Figure 5 In some embodiments, the brake 20 includes a housing 22 and a brake mechanism 23 disposed within the housing 22. An operating port 220 is provided on the outer side wall 222 of the housing 22. One end of the handle is connected to the brake mechanism 23, and the other end of the handle passes through the operating port 220 and extends to the radial outer side of the housing 22.

[0053] The housing 22 is typically a hollow cylindrical structure. Specifically, the housing 22 may include a bottom wall 221 and a side wall 222, which together form the housing 22. The braking mechanism 23 is installed in the housing 22.

[0054] The operating handle 21 can be roughly rod-shaped. One end of the operating handle 21 can be fixedly connected to the brake mechanism 23 by means of screwing, snap-fitting, etc. The other end of the operating handle 21 can extend to the outside of the housing 22 through the operating port 220 to form an operating part for user operation. The operating port 220 can be an arc-shaped opening. When the user pushes or pulls the operating handle 21, the operating port 220 provides space for the operating handle 21 to rotate, so that the operating handle 21 can reciprocate relative to the housing 22 along the extension direction Z of the operating port 220, thereby driving the brake mechanism 23 to switch between locked and unlocked states. It can be understood that the brake mechanism 23 usually cooperates with the drive shaft of the drive assembly 10. When the brake mechanism 23 is in the locked state, the brake mechanism 23 is locked with the drive shaft of the drive assembly 10, thereby realizing the braking of the drive assembly 10. When the brake mechanism 23 is in the unlocked state, the brake mechanism 23 is separated from the drive shaft of the drive assembly 10, so that the drive assembly 10 can operate normally.

[0055] Among them, the braking mechanism 23 can be an existing electromagnetic brake or other components.

[0056] Optionally, the braking mechanism 23 includes a transmission assembly, brake pads, and an elastic element. The transmission assembly can be a linkage structure or a cam structure, etc., and the elastic element can be a spring. The transmission assembly is connected to the operating handle 21 and the brake pads respectively. When the operating handle 21 drives the brake pads to the locked state through the transmission assembly, the transmission assembly can push the brake pads to press against the drive shaft of the drive assembly 10, thereby locking the drive shaft through friction. When the operating handle 21 drives the brake pads to the unlocked state through the transmission assembly, the elastic element can pull the brake pads away from the drive shaft, allowing the drive shaft of the drive assembly 10 to rotate freely.

[0057] The operating handle 21 can drive the brake pads to switch between locked and unlocked states via the transmission component. When the brake pads are in the locked state, they are locked to the transmission shaft of the drive component 10. When the brake pads are in the unlocked state, they are separated from the transmission shaft of the drive component 10, allowing the drive component 10 to operate normally.

[0058] Optionally, the operating handle 21 also includes a handle sleeve 24, which is fitted onto the operating part. Optionally, the handle sleeve 24 can be made of materials such as silicone or plastic to improve the ease of operation and comfort.

[0059] In some embodiments, the housing 22 is symmetrically arranged about the central plane S, which not only enables the housing 22 of the left brake 20 and the housing 22 of the right brake 20 to be mirror symmetrical, ensuring the consistency of appearance between the left and right housings 22, but also allows the left and right housings 22 to share a set of molds, thereby significantly reducing manufacturing costs.

[0060] In some embodiments, such as Figure 1 and Figure 4 As shown, the drive assembly 10 includes a motor body 11 and a reducer 12. The reducer 12 and the brake 20 are respectively located at opposite ends of the motor body 11. The reducer 12 includes a housing 120. The outer periphery of the housing 120 is provided with a mounting surface 101 to facilitate the installation and fixing of the drive device 100.

[0061] The motor body 11 is connected to a reducer 12 and a brake 20 at opposite ends. A reduction mechanism is provided inside the housing 120. Optionally, the reduction mechanism can be a planetary gear set or a worm gear reduction mechanism, etc. The reduction mechanism can reduce the output speed of the drive component 10 and increase the output torque.

[0062] Mounting surface 101 is designed on the housing 120 of the reducer 12, so that the load-bearing force is transmitted from the frame of the electric wheelchair through the housing 120 of the reducer 12 to the output shaft end of the drive assembly 10. The entire transmission path only requires strengthening the housing 120 of the reducer 12 to meet the load-bearing requirements. There are almost no load-bearing requirements for the parts outside the housing 120 of the reducer 12, which can save material costs.

[0063] In other words, compared to designing the mounting surface 101 on the outer surface of the motor body 11, the power transmission path needs to pass through the housing 110 of the drive assembly 10, the end cover of the drive assembly 10, and the gearbox housing 120 before being transmitted to the output shaft. The strength of the entire transmission path must be designed according to the load-bearing requirements, which will increase the strength requirements of these structural components, making the design more complex and the materials used will also increase accordingly.

[0064] In some embodiments, such as Figure 4 As shown, the mounting surface 101 is located on the side of the housing 120 away from the operating handle 21. When the drive device 100 is mounted on the mounting position on the wheelchair frame through the mounting surface 101, the operating handle 21 is located on the side of the drive device 100 away from the frame mounting position, avoiding interference between the operating handle 21 and the frame and improving the ease of operation.

[0065] In some embodiments, such as Figure 4 and Figure 5 As shown, the motor body 11 includes a housing 110 and a first end cover 111 and a second end cover 112 disposed at opposite ends of the housing 110; the first end cover 111 is connected between the housing 110 and the housing 120, and the second end cover 112 is connected between the housing 110 and the housing 22. The housing 110, the first end cover 111 and the second end cover 112 are all symmetrically arranged about the central plane S.

[0066] The housing 110 and the enclosure 120 can be fixedly connected by the first end cover 111 to ensure a stable connection between them. The housing 110 and the enclosure 22 can be fixedly connected by the second end cover 112 to ensure a stable connection between them.

[0067] The housing 110, the first end cover 111, and the second end cover 112 are all symmetrically arranged about the central plane S. This not only ensures that the housing 110, the first end cover 111, and the second end cover 112 on the left side are mirror-symmetrical with the corresponding parts on the right side, thus ensuring consistency in appearance, but also allows the housing 110, the first end cover 111, and the second end cover 112 on the left side to share a set of molds with the corresponding parts on the right side, thereby significantly reducing manufacturing costs.

[0068] In some embodiments, such as Figure 5 As shown, the outer periphery of the housing 110 is provided with a plurality of first heat dissipation fins 1101, the outer periphery of the first end cover 111 is provided with a plurality of second heat dissipation fins 1110, and the outer periphery of the second end cover 112 is provided with a plurality of third heat dissipation fins 1120; the plurality of first heat dissipation fins 1101, the plurality of second heat dissipation fins 1110 and the plurality of third heat dissipation fins 1120 are all symmetrically distributed about the central plane S.

[0069] Multiple first heat dissipation fins 1101 are spaced apart and protrude from the outer periphery of the housing 110. The first heat dissipation fins 1101 can increase the heat dissipation area of ​​the outer surface of the housing 110. Multiple second heat dissipation fins 1110 are spaced apart and protrude from the outer periphery of the first end cover 111. The second heat dissipation fins 1110 can increase the heat dissipation area of ​​the first end cover 111. Multiple third heat dissipation fins 1120 are spaced apart and protrude from the outer periphery of the second end cover 112. The third heat dissipation fins 1120 can increase the heat dissipation area of ​​the second end cover 112. Thus, the heat dissipation efficiency can be significantly improved and the operating temperature of the drive device 100 can be reduced by the multiple first heat dissipation fins 1101, multiple second heat dissipation fins 1110, and multiple third heat dissipation fins 1120.

[0070] Multiple first heat dissipation fins 1101, multiple second heat dissipation fins 1110, and multiple third heat dissipation fins 1120 are also symmetrically distributed about the central plane S, so that the first heat dissipation fins 1101, second heat dissipation fins 1110, and third heat dissipation fins 1120 on the left side can be mirror-symmetrical with the corresponding components on the right side, ensuring consistency in appearance.

[0071] In some embodiments, such as Figure 5 As shown, the housing 110 has a plurality of first connecting holes 1102, the first end cover 111 has a plurality of second connecting holes 1111, and the second end cover 112 has a plurality of third connecting holes 1121. The plurality of first connecting holes 1102, the plurality of second connecting holes 1111, and the plurality of third connecting holes 1121 are all symmetrically distributed about the central plane S.

[0072] The positions of each first connecting hole 1102, each second connecting hole 1111, and each third connecting hole 1121 are corresponding and connected.

[0073] In one embodiment, the second connecting hole 1111 is connected to the first connecting hole 1102 at the corresponding position by a first fastener, and the third connecting hole 1121 is connected to the first connecting hole 1102 at the corresponding position by a second fastener.

[0074] The first and second fasteners can be bolts, screws, etc. The first connecting hole 1102 passes through the upper and lower ends of the housing 110. During assembly, the first fastener is screwed into the second connecting hole 1111 and the first connecting hole 1102 in sequence to achieve a fixed connection between the first end cover 111 and the housing 110. The second fastener is screwed into the third connecting hole 1121 and the first connecting hole 1102 in sequence to achieve a fixed connection between the second end cover 112 and the housing 110.

[0075] In one embodiment, the first connecting hole 1102 is connected to the second connecting hole 1111 at the corresponding position and the third connecting hole 1121 at the corresponding position via a third fastener.

[0076] The third fastener can be a bolt, screw, etc. The first connecting hole 1102 passes through the upper and lower ends of the housing 110. During assembly, the first fastener is screwed into the second connecting hole 1111, the first connecting hole 1102 and the third connecting hole 1121 in sequence to achieve a fixed connection between the first end cover 111 and the housing 110, and a fixed connection between the second end cover 112 and the housing 110.

[0077] Multiple first connecting holes 1102, multiple second connecting holes 1111, and multiple third connecting holes 1121 are symmetrically distributed about the center plane S, which can ensure the appearance consistency of the relevant connecting holes on the left drive device 100 and the right drive device 100, and ensure that the left housing 110, the first end cover 111, the second end cover 112, and other components can share a set of molds with the corresponding components on the right.

[0078] In some embodiments, such as Figure 5 As shown, the housing 22 has a first fixing hole 2220, and the second end cover 112 has multiple second fixing holes 1122. The multiple first fixing holes 2220 and multiple second fixing holes 1122 are symmetrically distributed about the central plane S. Optionally, the second fixing holes 1122 are connected to the corresponding first fixing holes 2220 by a fourth fastener.

[0079] The fourth fastener can be a bolt, screw, or other fastener. During assembly, the fourth fastener can be screwed into the first fixing hole 2220 and the second fixing hole 1122 in sequence to achieve a fixed connection between the housing 22 and the second end cover 112.

[0080] The multiple first fixing holes 2220 and multiple second fixing holes 1122 are symmetrically distributed about the center plane S, which can ensure the appearance consistency of the relevant fixing holes on the left drive device 100 and the right drive device 100.

[0081] In some embodiments, the housing 22 further includes a flange 223, which is connected to one end of the side wall 222 away from the bottom wall 221. A first fixing hole 2220 is provided on the flange 223. The flange 223 is wrapped around the outer periphery of the side wall 222 and abuts against the second end cover 112, so as to facilitate screwing with the second end cover 112.

[0082] Based on the same inventive concept, this utility model embodiment also provides an electric wheelchair, which includes the drive unit 100 and frame as described in the above embodiments. The drive unit 100 is mounted on the frame via a mounting surface 101. Since the electric wheelchair includes the drive unit 100 as described in the above embodiments, it also possesses the beneficial effects described in the above embodiments, which will not be repeated here.

[0083] Two drive units 100 are provided, with mounting positions on opposite sides of the frame. The two drive units 100 are respectively mounted on their corresponding mounting positions. After installation, the two drive units 100 are arranged in a mirror-symmetrical configuration, ensuring visual consistency and ease of operation. Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Under the concept of this utility model, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this utility model as described above. For the sake of brevity, they are not provided in detail. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of this utility model.

Claims

1. A driving device (100), characterized in that, include: A drive assembly (10) has a mounting surface (101) on its outer peripheral side. A brake (20) is connected to one end of the drive assembly (10), and the brake (20) is provided with an operating handle (21) that extends to the radial outer side of the brake (20). The mounting surface (101) is perpendicular to the center surface of the operating handle (21), and the center surface passes through the axis of the drive assembly (10).

2. The driving device (100) according to claim 1, characterized in that, The brake (20) includes a housing (22) and a brake mechanism (23) disposed in the housing (22). An operating port (220) is provided on the outer side wall (222) of the housing (22). One end of the handle is connected to the brake mechanism (23), and the other end of the handle passes through the operating port (220) and extends to the radial outer side of the housing (22).

3. The driving device (100) according to claim 2, characterized in that, The shell (22) is symmetrical about the central plane.

4. The driving device (100) according to claim 2, characterized in that, The drive assembly (10) includes a motor body (11) and a reducer (12), wherein the reducer (12) and the brake (20) are respectively located at opposite ends of the motor body (11); The reducer (12) includes a housing (120), and the mounting surface (101) is provided on the outer periphery of the housing (120).

5. The driving device (100) according to claim 4, characterized in that, The mounting surface (101) is located on the side of the housing (120) opposite to the operating handle (21).

6. The driving device (100) according to claim 4, characterized in that, The motor body (11) includes a housing (110) and a first end cover (111) and a second end cover (112) disposed at opposite ends of the housing (110); the first end cover (111) is connected between the housing (110) and the housing (120), and the second end cover (112) is connected between the housing (110) and the housing (22); The housing (110), the first end cap (111), and the second end cap (112) are all symmetrically arranged about the central plane.

7. The driving device (100) according to claim 6, characterized in that, The outer periphery of the housing (110) is provided with a plurality of first heat dissipation fins (1101), the outer periphery of the first end cover (111) is provided with a plurality of second heat dissipation fins (1110), and the outer periphery of the second end cover (112) is provided with a plurality of third heat dissipation fins (1120). The plurality of first heat dissipation fins (1101), the plurality of second heat dissipation fins (1110), and the plurality of third heat dissipation fins (1120) are symmetrically distributed about the central plane.

8. The driving device (100) according to claim 6, characterized in that, The housing (110) has a plurality of first connecting holes (1102), the first end cap (111) has a plurality of second connecting holes (1111), and the second end cap (112) has a plurality of third connecting holes (1121). The plurality of first connecting holes (1102), the plurality of second connecting holes (1111), and the plurality of third connecting holes (1121) are all symmetrically distributed about the central plane. The positions of each of the first connecting holes (1102), each of the second connecting holes (1111), and each of the third connecting holes (1121) are corresponding and connected.

9. The driving device (100) according to claim 6, characterized in that, The housing (22) has a plurality of first fixing holes (2220), and the second end cap (112) has a plurality of second fixing holes (1122). The plurality of first fixing holes (2220) and the plurality of second fixing holes (1122) are symmetrically distributed about the central plane.

10. An electric wheelchair, characterized in that, Includes the drive device (100) according to any one of claims 1-9; and The drive unit (100) is mounted on the frame via the mounting surface (101).

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