Movable device

Abstract

The utility model provides a movable device which comprises a support, a speed reducing mechanism, a wheel body and a driver, the speed reducing mechanism is arranged on the support, and the speed reducing mechanism comprises a first gear; the wheel body is rotationally connected to the support and comprises a hub, and a second gear is arranged on the hub and used for being meshed with the first gear; the driver is arranged on the support, connected with the speed reducing mechanism and used for driving the wheel body through the speed reducing mechanism. When the wheel body is replaced, only the wheel body is detached, the speed reducing mechanism and the driver are kept fixed to the support, the detaching and installing difficulty of the wheel body can be reduced, and for different wheel bodies, the wheel body can be suitable for different use scenes only by enabling the second gear of the wheel body to be matched with the first gear of the speed reducing mechanism and enabling the diameters of the wheel bodies to be different. The driver and the speed reducing mechanism can be matched with different wheel bodies, the driver and the speed reducing mechanism do not need to be replaced, and the cost of replacing the wheel bodies is low.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a movable device. BACKGROUND

[0002] The movable device such as a walking aid, a wheelchair, etc. can enable the old, the sick, or even the person who loses the walking ability to walk out like a normal person through the support of the device, and bring great convenience to people's life.

[0003] The electric movable device is generally provided with a wheel body, a driver and a speed reduction mechanism. At present, the wheel body, the speed reduction mechanism and the driver are usually arranged as a whole and are not easy to disassemble. In different use scenarios, if different wheel bodies are needed, the wheel body, the speed reduction mechanism and the driver need to be replaced as a whole, which causes great cost and difficulty in replacement. CONTENT OF THE UTILITY MODEL

[0004] The present application provides a movable device which can facilitate the disassembly and assembly of the wheel body and has low cost.

[0005] In the first aspect, the present application provides a movable device, which comprises a support, a speed reduction mechanism, a wheel body and a driver. The speed reduction mechanism is arranged on the support and comprises a first gear. The wheel body is rotationally connected to the support and comprises a hub. A second gear is arranged on the hub and is used to mesh with the first gear. The driver is arranged on the support and is connected with the speed reduction mechanism and is used to drive the wheel body through the speed reduction mechanism.

[0006] In some embodiments of the present application, the hub comprises a main body which is formed with a receiving groove. A first limiting part is arranged on the side wall of the receiving groove. A second limiting part is arranged on the outer periphery of the second gear. At least part of the second gear is arranged in the receiving groove, and the first limiting part and the second limiting part cooperate to limit the second gear in the circumferential direction.

[0007] In some embodiments of the present application, the speed reduction mechanism comprises a plurality of first gears which are arranged at intervals in the circumferential direction of the second gear. The diameter of the first gear is smaller than the diameter of the second gear.

[0008] In some embodiments of the present application, the speed reduction mechanism further comprises a plurality of third gears and a fourth gear. The plurality of third gears are coaxially arranged one by one corresponding to the plurality of first gears. The plurality of third gears are arranged at intervals in the circumferential direction of the fourth gear and mesh with the fourth gear respectively. The fourth gear is connected with the driver.

[0009] In some embodiments of this application, the third gear protrudes from the second gear along the radial direction of the second gear.

[0010] In some embodiments of this application, the driver includes a drive shaft that passes through and is fixedly connected to the fourth gear, and the drive shaft also passes through and is rotatably connected to the hub.

[0011] In some embodiments of this application, the deceleration mechanism includes a base and a limiting member, the base is disposed on the bracket, the limiting member is connected to the base, and the first gear is disposed between the base and the limiting member.

[0012] In some embodiments of this application, the wheel hub includes a main body, an annular support member, a connecting member, and a tire. The main body is disposed within the annular support member, the connecting member connects the main body and the annular support member, and the tire is disposed around the annular support member.

[0013] Along the radial direction of the hub, the projection of the annular support overlaps at least partially with the projection of the second gear.

[0014] In some embodiments of this application, the deceleration mechanism includes a first housing, the driver includes a second housing, and the first housing and the second housing are fixedly connected.

[0015] In some embodiments of this application, the driver includes a second housing, a stator, a rotor, and a drive shaft, the drive shaft passing through the stator, the rotor surrounding the stator, the rotor being connected to the drive shaft, the second housing surrounding the rotor, and the drive shaft being connected to the reduction mechanism. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings.

[0017] Figure 1 This is a perspective view of a movable device provided in some embodiments of this application;

[0018] Figure 2 A perspective view of a portion of the structure of a movable device provided in some embodiments of this application;

[0019] Figure 3 Exploded view of a portion of the structure of a movable device provided in some embodiments of this application;

[0020] Figure 4 An exploded view of a portion of the structure of a movable device provided in some embodiments of this application;

[0021] Figure 5 This is an exploded structural diagram of the wheel body of a movable device provided in some embodiments of this application;

[0022] Figure 6 A three-dimensional structural schematic diagram of the deceleration mechanism of a movable device provided in some embodiments of this application;

[0023] Figure 7 An exploded structural diagram of the deceleration mechanism of a movable device provided in some embodiments of this application;

[0024] Figure 8 A structural schematic diagram from one perspective of the deceleration mechanism of a movable device provided in some embodiments of this application;

[0025] Figure 9 This is an exploded structural diagram of the actuator of a movable device provided in some embodiments of this application. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0027] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the specification of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having" and any variations thereof in the specification, claims and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0028] The terms "first," "second," etc., in the specification, claims, or the accompanying drawings of this application are used to distinguish different objects, rather than to describe a specific order or primary / secondary relationship.

[0029] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0030] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0031] With the development of the medical device industry, walking aids are gradually evolving towards multi-scenario applications. Different usage scenarios require different wheel structures (especially sizes) for the mobile devices. However, the wheels of current direct-drive mobile devices are generally non-removable or need to be disassembled together with the drive unit and reduction gear. This results in the need to prepare multiple sets of wheels, reduction gears, and drives for different scenarios, leading to higher costs. Furthermore, the overall size of the wheels, reduction gears, and drives is large, making disassembly and installation more difficult.

[0032] To facilitate wheel assembly and disassembly and reduce costs, this application provides a movable device. The movable device includes a bracket, a reduction mechanism, a wheel, and a driver. The reduction mechanism is mounted on the bracket and includes a first gear. The wheel is rotatably connected to the bracket and includes a hub. A second gear is mounted on the hub and meshes with the first gear. The driver is mounted on the bracket and connected to the reduction mechanism to drive the wheel through the reduction mechanism.

[0033] In this type of movable device, the reduction mechanism includes a first gear, and a second gear is mounted on the hub of the wheel. The second gear meshes with the first gear, allowing the wheel to be detached from and installed on the reduction mechanism. The driver is mounted on a bracket and connected to the reduction mechanism. It drives the wheel through the reduction mechanism, so that when replacing the wheel, only the wheel itself needs to be removed, while the reduction mechanism and driver remain fixed on the bracket. This reduces the difficulty of disassembling and installing the wheel. Furthermore, for different wheels, it is only necessary to match the second gear of the wheel with the first gear of the reduction mechanism. Different wheel diameters can be used for different applications, allowing the driver and reduction mechanism to match different wheels without needing to replace them, thus reducing the cost of replacing the wheel.

[0034] See Figures 1 to 4 , Figure 1 This is a perspective view of a movable device provided in some embodiments of this application; Figure 2 A perspective view of a portion of the structure of a movable device provided in some embodiments of this application; Figure 3 Exploded view of a portion of the structure of a movable device provided in some embodiments of this application;

[0035] Figure 4 An exploded view of a portion of the structure of a movable device provided in some embodiments of this application.

[0036] This application provides a movable device 10, which includes a support 100, a reduction mechanism 200, a wheel 300, and a driver 400. The reduction mechanism 200 is mounted on the support 100 and includes a first gear 210. The wheel 300 is rotatably connected to the support 100 and includes a hub 310. A second gear 320 is mounted on the hub 310 and meshes with the first gear 210. The driver 400 is mounted on the support 100 and connected to the reduction mechanism 200, and is used to drive the wheel 300 through the reduction mechanism 200.

[0037] The reduction mechanism 200 includes a first gear 240, and a second gear 320 is provided on the hub 310 of the wheel body 300. The second gear 320 is used to mesh with the first gear 240, so that the wheel body 300 can be disassembled and installed from the reduction mechanism 200. The driver 400 is mounted on the bracket 100 and connected to the reduction mechanism 200. The driver 400 drives the wheel 300 through the reduction mechanism 200. When replacing the wheel 300, only the wheel 300 needs to be removed, while the reduction mechanism 200 and the driver 400 remain fixed on the bracket 100. This reduces the difficulty of disassembling and installing the wheel 300. Furthermore, for different wheels 300, it is only necessary to match the second gear 320 of the wheel 300 with the first gear 210 of the reduction mechanism 200. Different diameters of the wheel 300 can be used for different application scenarios. This allows the driver 400 and the reduction mechanism 200 to be matched with different wheels 300 without replacing the driver 400 and the reduction mechanism 200, thus reducing the cost of replacing the wheel 300.

[0038] See also Figure 5 , Figure 5 This is an exploded structural diagram of the wheel body of a movable device provided in some embodiments of this application.

[0039] In some embodiments, the hub 310 includes a body 311, the body 311 having a receiving groove 3111, a first limiting portion 3112 being provided on the side wall of the receiving groove 3111, a second limiting portion 321 being provided on the outer periphery of the second gear 320, at least a portion of the second gear 320 being disposed in the receiving groove 3111, and the first limiting portion 3112 cooperating with the first limiting portion 3112 for limiting the second gear 320 in the circumferential direction.

[0040] By forming a receiving groove 3111 in the main body 311, a first limiting part 3112 is provided on the side wall of the receiving groove 3111, a second limiting part 321 is provided on the outer periphery of the second gear 320, at least a part of the second gear 320 is provided in the receiving groove 3111, and the first limiting part 3112 cooperates with the first limiting part 3112 to limit the second gear 320 in the circumferential direction, so that when the first gear 240 of the reduction mechanism 200 drives the second gear 320 to rotate, the hub 310 can rotate together with the second gear 320, thereby realizing the driving of the hub 310.

[0041] In some embodiments, the first limiting part 3112 is a limiting groove, and the second limiting part 321 is a limiting protrusion. The limiting protrusion is accommodated in the limiting groove to cooperate with the limiting.

[0042] In other embodiments, the first limiting part 3112 may be a limiting protrusion and the second limiting part 321 may be a limiting groove; this is not a limitation.

[0043] See also Figures 6 to 8 , Figure 6 A three-dimensional structural schematic diagram of the deceleration mechanism of a movable device provided in some embodiments of this application; Figure 7 An exploded structural diagram of the deceleration mechanism of a movable device provided in some embodiments of this application; Figure 8 This is a structural schematic diagram from one perspective of the deceleration mechanism of a movable device provided in some embodiments of this application.

[0044] In some embodiments, the reduction mechanism 200 includes a plurality of first gears 210, which are arranged circumferentially at intervals along the second gear 320. The diameter of the first gears 210 is smaller than the diameter of the second gear 320.

[0045] By arranging multiple first gears 210 at circumferential intervals along the second gear 320, the force transmitted from the first gear 210 to the second gear 320 can be made more stable. That is, one of the multiple first gears 210 remains engaged with the second gear 320, and even if the other first gears 210 malfunction, the second gear 320 can still be driven to rotate.

[0046] By making the diameter of the first gear 210 smaller than the diameter of the second gear 320, the transmission speed of the first gear 210 can be made greater than the rotational speed of the second gear 320, thereby achieving deceleration.

[0047] In some embodiments, the reduction mechanism 200 further includes a plurality of third gears 220 and a fourth gear 230. The plurality of third gears 220 are coaxially arranged in a one-to-one correspondence with a plurality of first gears 210. The plurality of third gears 220 are spaced apart circumferentially along the fourth gear 230 and mesh with the fourth gear 230 respectively. The fourth gear 230 is connected to the driver 400.

[0048] By coaxially aligning multiple third gears 220 with multiple first gears 210 in a one-to-one correspondence, the rotational speed of the third gears 220 can be made the same as that of the first gears 210. By arranging multiple third gears 220 at circumferential intervals along and meshing with the fourth gear 230, and connecting the fourth gear 230 to the driver 400, the driver 400 can drive the fourth gear 230 to rotate. In turn, the fourth gear 230 can drive the multiple third gears 220 to rotate, making the force transmitted from the fourth gear 230 to the third gears 220 more stable. That is, even if one of the third gears 220 remains meshed with the fourth gear 230, the fourth gear 230 can still be driven to rotate even if the other third gears 220 malfunction.

[0049] In some embodiments, the third gear 220 protrudes from the second gear 320 along the radial direction of the second gear 320.

[0050] In some embodiments, the driver 400 includes a drive shaft 410 that passes through and is fixedly connected to the fourth gear 230, and a drive shaft 410 that passes through and is rotatably connected to the hub 310.

[0051] By having the drive shaft 410 pass through and be fixedly connected to the fourth gear 230, the driver 400 can drive the fourth gear 230 through the drive shaft 410, thereby driving the hub 310 to rotate through the reduction mechanism 200. By having the drive shaft 410 pass through and be rotatably connected to the hub 310, the drive shaft 410 and the hub 310 can be relatively fixed in the axial direction of the hub 310, and the drive shaft 410 is not easily detached from the hub 310.

[0052] In some embodiments, the deceleration mechanism 200 includes a base 240 and a limiting member 250. The base 240 is disposed on the bracket 100, the limiting member 250 is connected to the base 240, and the first gear 210 is disposed between the base 240 and the limiting member 250.

[0053] By including a base 240 and a limiting member 250 in the deceleration mechanism 200, the base 240 is disposed on the bracket 100, the limiting member 250 is connected to the base 240, and the first gear 210 is disposed between the base 240 and the limiting member 250, the deceleration mechanism 200 can be fixed to the bracket 100, and the limiting member 250 cooperates with the base 240 to limit the first gear 210 in the axial direction, which can reduce the possibility of the first gear 210 disengaging from the deceleration mechanism 200 and improve the reliability of the movable device 10.

[0054] See Figure 5 In some embodiments, the hub 310 includes a main body 311, an annular support 312, a connector 313, and a tire 314. The main body 311 is disposed within the annular support 312, the connector 313 is connected between the main body 311 and the annular support 312, and the tire 314 is disposed around the annular support 312. Along the radial direction of the hub 310, the projection of the annular support 312 at least partially overlaps with the projection of the second gear 320.

[0055] By ensuring that the projection of the annular support 312 along the radial direction of the hub 310 at least partially overlaps with the projection of the second gear 320, at least a portion of the first gear 240 of the reduction mechanism 200 meshing with the second gear 320 is housed within the hub 310, thereby reducing the space occupied by the reduction mechanism 200.

[0056] In some embodiments, the deceleration mechanism 200 includes a first housing 260, the driver 400 includes a second housing 420, and the first housing 260 and the second housing 420 are fixedly connected.

[0057] By making the deceleration mechanism 200 include a first housing 260 and the driver 400 include a second housing 420, and the first housing 260 and the second housing 420 are fixedly connected, the overall structure of the deceleration mechanism 200 and the driver 400 can be made more stable.

[0058] See Figure 9 , Figure 9 This is an exploded structural diagram of the actuator of a movable device provided in some embodiments of this application.

[0059] In some embodiments, the driver 400 includes a second housing 420, a stator 430 (coils not shown in the figure), a rotor 440, and a drive shaft 410. The drive shaft 410 is disposed through the stator 430, the rotor 440 is disposed around the stator 430, the rotor 440 is connected to the drive shaft 410, the second housing 420 is disposed around the rotor 440, and the drive shaft 410 is connected to the reduction mechanism 200.

[0060] By arranging the rotor 440 around the stator 430 and connecting the rotor 440 to the drive shaft 410, the rotor 440 can interact with the stator 430, allowing it to rotate around the stator 430 and thus drive the drive shaft 410 to rotate. By arranging the second housing 420 around the rotor 440, the second housing 420 can provide fixation and protection for the stator 430, rotor 440, and drive shaft 410.

[0061] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0062] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A movable device, characterized in that, include: support; A speed reduction mechanism is mounted on the bracket, and the speed reduction mechanism includes a first gear; A wheel body is rotatably connected to the bracket. The wheel body includes a hub, and a second gear is provided on the hub. The second gear is used to mesh with the first gear. A driver, mounted on the bracket, is connected to the reduction mechanism and is used to drive the wheel via the reduction mechanism.

2. The movable device according to claim 1, characterized in that, The hub includes a main body, the main body having a receiving groove, a first limiting part being provided on the side wall of the receiving groove, a second limiting part being provided on the outer periphery of the second gear, at least a portion of the second gear being disposed in the receiving groove, and the first limiting part cooperating with the first limiting part for limiting the second gear in the circumferential direction.

3. The movable device according to claim 1, characterized in that, The deceleration mechanism includes a plurality of first gears, which are spaced apart circumferentially along the second gear; the diameter of the first gear is smaller than the diameter of the second gear.

4. The movable device according to claim 3, characterized in that, The deceleration mechanism further includes a plurality of third gears and a fourth gear. The plurality of third gears are coaxially arranged in a one-to-one correspondence with the plurality of first gears. The plurality of third gears are spaced apart along the circumference of the fourth gear and mesh with the fourth gear respectively. The fourth gear is connected to the driver.

5. The movable device according to claim 4, characterized in that, The third gear protrudes from the second gear along the radial direction of the second gear.

6. The movable device according to claim 4, characterized in that, The driver includes a drive shaft that passes through and is fixedly connected to the fourth gear, and also passes through and is rotatably connected to the hub.

7. The movable device according to claim 1, characterized in that, The deceleration mechanism includes a base and a limiting member. The base is disposed on the bracket, and the limiting member is connected to the base. The first gear is disposed between the base and the limiting member.

8. The movable device according to claim 1, characterized in that, The wheel hub includes a main body, an annular support member, a connecting member, and a tire. The main body is disposed within the annular support member, the connecting member connects the main body and the annular support member, and the tire is disposed around the annular support member. Along the radial direction of the hub, the projection of the annular support overlaps at least partially with the projection of the second gear.

9. The movable device according to claim 1, characterized in that, The deceleration mechanism includes a first housing, and the driver includes a second housing, with the first housing and the second housing fixedly connected.

10. The movable device according to claim 1, characterized in that, The driver includes a second housing, a stator, a rotor, and a drive shaft. The drive shaft passes through the stator, the rotor surrounds the stator, and the rotor is connected to the drive shaft. The second housing surrounds the rotor, and the drive shaft is connected to the reduction mechanism.

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