Electric hub and driving wheel

Abstract

The utility model discloses an electric hub and a driving wheel. The electric hub comprises a center shaft, a wheel body and a transmission assembly, and the wheel body is of a hollow structure and is rotatably arranged on the center shaft; the transmission assembly comprises a motor, a reduction gear set, a main gear, a positioning sleeve and a transmission part, the transmission part is fixedly connected with the wheel body through a plurality of screws and can rotate relative to the center shaft, and the main gear is fixedly connected with the positioning sleeve and can rotate relative to the center shaft; a first abutting part is arranged on one side of the transmission part, the interior of the first abutting part is hollow, the inner contour of the first abutting part is roughly circular, a plurality of arc-shaped concave parts are formed in the inner wall of the first abutting part, a second abutting part is arranged on the top of the positioning sleeve, and square grooves are formed in the two sides of the second abutting part and used for installing metal square plates. Two second magnets are arranged between the transmission piece and the positioning sleeve; a circle of protrusions are arranged on the outer edge of the positioning sleeve and used for being connected with the transmission piece in a limiting mode.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of drive wheel, in particular to an electric wheel hub. BACKGROUND

[0002] The motor wheel hub is a design that integrates the motor directly inside the wheel, aiming to simplify the power transmission system of the vehicle and improve the energy utilization efficiency. This design is widely used in electric vehicles, electric bicycles, etc. By installing the motor directly inside the wheel hub, complex transmission devices such as chains, belts or gearboxes can be eliminated, reducing mechanical losses and improving the overall efficiency of the system.

[0003] However, the traditional motor wheel hub is not easy to assemble. Some wheel motor hubs are divided into a wheel body, a motor, a transmission assembly, and a center shaft. The center shaft needs to be kept stationary and then drive the wheel body to rotate through the drive assembly. Therefore, the assembly of the transmission assembly is often not easy. For example, a slot is formed on the center shaft to install a circlip for positioning the installation position of the transmission assembly to prevent the transmission assembly from coming out. However, the installation of the circlip is cumbersome and has a certain probability of coming out, which is unstable. Therefore, how to solve the above problems is the purpose of the present application.

[0004] The above content is only used to assist in understanding the technical solutions of the present application, and does not represent the acknowledgement of the above content as the closest prior art to the present application. SUMMARY

[0005] Based on this, the present application provides an electric wheel hub to solve one of the above technical problems.

[0006] The technical scheme adopted by the present application to solve its technical problems is an electric wheel hub and a drive wheel, comprising: a center shaft, a wheel body, and a transmission assembly, the wheel body is a hollow structure and is rotatably arranged on the center shaft; the transmission assembly comprises a motor, a reduction gear set, a main gear, a positioning sleeve, and a transmission member, the transmission member is fixedly connected with the wheel body through multiple screws and is rotatable relative to the center shaft, the main gear is fixedly connected with the positioning sleeve and is rotatable relative to the center shaft, the motor drives the main gear to rotate through the reduction gear set; one side of the transmission member is provided with a first abutting portion, the first abutting portion is hollow inside and has a substantially circular inner contour and a plurality of arc-shaped recesses are formed on the inner wall, a top of the positioning sleeve is provided with a second abutting portion, two sides of the second abutting portion are provided with square grooves for installing a metal square plate, two second magnets are arranged between the transmission member and the positioning sleeve, the second magnets are substantially cylindrical, the outer periphery of the second magnets is attracted by the metal square plate, and the second magnets can be driven into the arc-shaped recesses by the second abutting portion when the metal sleeve rotates, thereby being clamped and driving the wheel body to rotate; a ring of protrusions is arranged on the outer edge of the positioning sleeve for limiting the connection with the transmission member.

[0007] In some embodiments, a support frame is further included, which comprises a first support plate, a support sleeve, and a second support plate, the support sleeve is integrally formed with the first support plate, the support sleeve is sleeved on the central shaft, the positioning sleeve and the transmission member are rotatably sleeved on the support sleeve, and the second support plate is spacedly covered on the first support plate, the transmission assembly is mounted on the first support plate and arranged in the space between the first support plate and the second support plate.

[0008] In some embodiments, the second support plate and the first support plate are both provided with a lamp strip groove for mounting an LED lamp strip.

[0009] In some embodiments, a Hall sensor is mounted on the second support plate, and one side of the wheel body is provided with a first magnet matched with the Hall sensor.

[0010] In some embodiments, a metal round plate is arranged on the top of the second magnet and the metal square plate, and the end surface of the second magnet is adsorbed by the metal round plate.

[0011] In some embodiments, the wheel body comprises a wheel plate and a cylindrical shell, the cylindrical shell is connected with the wheel plate through a screw, the first magnet is arranged on the planar inner wall of the cylindrical shell and provided with a first connecting part with a non-circular outer contour at the center of the planar inner wall, and the top of the transmission member is provided with a second connecting part matched with the first connecting part.

[0012] A driving wheel comprises the electric hub as described above.

[0013] The application has the advantages that the wheel body and the transmission member are connected through a screw to become an integral whole, which is convenient for matched connection with the positioning sleeve, and the screw can effectively improve the stability of the wheel body during rotation; the metal square plate can serve as a rotation support point of the second magnet to increase the structural strength; the protrusion can be connected with the transmission member for limiting and increasing the structural strength to realize large load. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort.

[0015] Figure 1 is a schematic diagram of the three-dimensional structure of the present application.

[0016] Figure 2 is an internal structure explosion schematic diagram of the present application.

[0017] Figure 3 is a sectional view of a connection state of the positioning sleeve of the present application.

[0018] Figure 4 is a three-dimensional structure diagram of the first connecting part of the present application.

[0019] Figure 5 is a three-dimensional structure diagram of the second connecting part of the present application.

[0020] Figure 6 is a diagram of the internal structure of the cylindrical shell of the present application.

[0021] Explanation of reference numerals: 1, central shaft; 2, wheel body; 21, wheel plate; 22, cylindrical shell; 221, first magnet; 222, first connecting part; 3, transmission assembly; 31, motor; 32, speed reduction gear set; 33, main gear; 34, positioning sleeve; 341, second abutting part; 342, square groove; 343, metal square plate; 344, second magnet; 345, metal round plate; 346, protrusion; 35, transmission piece; 351, first abutting part; 3511, arc-shaped recessed part; 352, second connecting part; 4, support frame; 41, first support plate; 42, support sleeve; 43, second support plate; 44, lamp strip groove; 45, Hall sensor. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without any creative effort fall within the protection scope of the present application. In addition, the technical solutions in each embodiment can be combined with each other, but the combination should be based on the fact that a person of ordinary skill in the art can realize the combination, and when the combination of technical solutions appears to be contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the protection scope of the present application.

[0023] In the embodiments of the present application, please refer to Figures 1-6As shown, the application provides an electric wheel hub, mainly comprising: a center shaft 1, a wheel body 2, a transmission assembly 3, the wheel body 2 is hollow structure and rotatably arranged on the center shaft 1; the transmission assembly 3 comprises a motor 31, a reduction gear set 32, a main gear 33, a positioning sleeve 34, a transmission part 35, the transmission part 35 is fixedly connected with the wheel body 2 through multiple screws and rotatable relative to the center shaft 1, the main gear 33 is fixedly connected with the positioning sleeve 34 and rotatable relative to the center shaft 1, the motor 31 drives the main gear 33 to rotate through the reduction gear set 32; one side of the transmission part 35 is provided with a first abutting portion 351, the first abutting portion 351 is hollow inside and the inner contour is generally circular and a plurality of arc recesses 3511 are formed on the inner wall, the top of the positioning sleeve 34 is provided with a second abutting portion 341, two square grooves 342 are formed on the two sides of the second abutting portion 341 for installing a metal square plate 343, two second magnets 344 are arranged between the transmission part 35 and the positioning sleeve 34, the second magnet 344 is generally cylindrical, the outer periphery of the second magnet 344 is adsorbed by the metal square plate 343, and the second magnet 344 can be driven into the arc recess 3511 by the second abutting portion 341 when the metal sleeve rotates, so as to be clamped and drive the wheel body 2 to rotate; refer to Figure 5 As shown, the outer edge of the positioning sleeve 34 is provided with a ring of protrusions 346, which can prevent the second magnet 344 from falling out during assembly and can limit the transmission part 35, increase the structural strength and realize larger load.

[0024] Specifically, when the motor 31 drives the positioning sleeve 34 to start rotating, the positioning sleeve 34 can drive the transmission part 35 fixed with the wheel body 2 by screws to rotate through the internal components, and the wheel body 2 can rotate synchronously; during assembly, especially for some wheel hub motors 31 that need to realize the clutching mode through magnets, the circlip for positioning the position of the center shaft 1 is removed and fixed by three screws, which has better and more stable fixing effect.

[0025] Some preferred / modified embodiments based on the above embodiments will be further described below, and the following embodiments can be selected or combined.

[0026] Refer to Figure 2As shown, the support frame 4 comprises a first support plate 41, a support sleeve 42 integrally formed with the first support plate 41, a second support plate 43, and the support sleeve 42 is sleeved on the central shaft 1, the positioning sleeve 34 and the transmission member 35 are rotatably sleeved on the support sleeve 42, and the second support plate 43 is spacedly covered on the first support plate 41. The transmission assembly 3 is installed on the first support plate 41 and arranged between the first support plate 41 and the second support plate 43. In this way, the transmission assembly 3 can be more stably and quickly installed on the first support plate 41.

[0027] Preferably, the second support plate 43 and the first support plate 41 are both provided with a lamp strip groove 44 for installing an LED lamp strip. A Hall sensor 45 is installed on the second support plate 43, and one side of the wheel body 2 is provided with a first magnet 221 matched with the Hall sensor 45. The Hall sensor 45 can effectively convert the count of rotation into a light signal of the LED lamp, so that the LED lamp strip installed in the lamp strip groove 44 can be matched with the rotation to light up.

[0028] The second magnet 344 is provided with a metal round plate 345 on the top of the metal square plate 343, and the end surface of the second magnet 344 is adsorbed by the metal round plate 345, so as to ensure that the second magnet 344 is separated from the metal square plate 343.

[0029] Referring to Figure 3 In order to enable the Hall sensor 45 to effectively read the data of the rotation of the wheel body 2, and ensure that the transmission member 35 fixedly arranged by the screw can be stably and correctly aligned with the threaded hole pre-formed on the wheel body 2 and the transmission member 35, the wheel body 2 comprises a wheel plate 21 and a cylindrical shell 22, the cylindrical shell 22 is connected with the wheel plate 21 by a screw, the first magnet 221 is arranged on the planar inner wall of the cylindrical shell 22, and a first connecting part 222 with a non-circular outer contour is arranged at the center of the planar inner wall, and the top of the transmission member 35 is provided with a second connecting part 352 matched with the first connecting part 222.

[0030] A driving wheel, characterized in comprising the electric wheel hub as described above.

[0031] So far, various embodiments of the present application have been described in detail. In order to avoid obscuring the concept of the present application, some details known in the art are not described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein according to the above description.

[0032] Finally, it should be noted that the above is only the preferred embodiment of the application, the foregoing embodiments are only to illustrate the technical solutions of the application, not to limit them; although the application is described in detail with reference to the foregoing embodiments, those skilled in the art will understand that the technical solutions described in the foregoing embodiments can still be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not drive the essence of the corresponding technical solutions out of the spirit and scope of the technical solutions of the embodiments of the application.

Claims

1. An electric wheel hub, characterized by The electric wheel hub comprises a central shaft, a wheel body, and a transmission assembly. The transmission assembly comprises a motor, a speed reduction gear set, a main gear, a positioning sleeve, and a transmission member. The transmission member is fixedly connected with the wheel body through multiple screws and is rotatable relative to the central shaft.

2. An electric wheel hub as claimed in claim 1, characterized in that The positioning sleeve is fixedly connected with the main gear and is rotatable relative to the central shaft.

3. An electric wheel hub according to claim 2, characterized in that The transmission member is provided with a first abutting portion on one side.

4. An electric hub as claimed in claim 2, wherein, The positioning sleeve is provided with a second abutting portion on the top.

5. The electric wheel hub of claim 1, wherein, The second magnet is in the form of a cylinder.

6. An electric wheel hub as claimed in claim 4, characterized in that The second magnet is attracted to the metal plate.

7. A drive wheel characterized by The wheel body comprises a wheel plate and a cylindrical shell. The first magnet is arranged on the planar inner wall of the cylindrical shell. The transmission member is provided with a second connecting portion. The electric wheel hub comprises the electric wheel hub as claimed in any one of claims 1-6.

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