Electric hub with motor clutch structure

Abstract

The electric hub with the motor clutch structure comprises a center shaft, a wheel body, a transmission assembly and a clutch assembly, and the wheel body is of a hollow structure and is rotatably arranged on the center shaft; the transmission assembly comprises a driving motor, a reduction gear set, a main gear, a positioning sleeve and a transmission piece. The transmission part is fixedly connected with the wheel body and can rotate relative to the center shaft, the main gear is fixedly connected with the positioning sleeve and can rotate relative to the center shaft, and the driving motor drives the main gear to rotate through the reduction gear set; the clutch assembly comprises a clutch motor, a clutch transmission mechanism, a shifting fork, a clutch piece and a spring. The clutch piece is movably arranged on the positioning sleeve in a sleeving mode or arranged on the positioning sleeve and the transmission piece in a sleeving mode at the same time to connect the positioning sleeve and the transmission piece. The spring is used for driving the clutch part to move towards the transmission part; the shifting fork is connected with the clutch motor through the clutch transmission mechanism and used for driving the clutch piece to overcome the acting force of the spring so that the clutch piece can be away from the transmission piece.

Description

Technical Field

[0001] The present application relates to the technical field of electric hubs, and in particular to an electric hub with a motor clutch structure. Background Art

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

[0003] However, traditional motor hubs usually rely on external physical braking force, such as a mechanical brake system, when braking. Although this method is effective, it may cause damage to the motor in some cases. This is because the braking force acting directly on the wheel will be transmitted to the inside of the motor through axial force, which may cause excessive wear or damage to the internal components of the motor.

[0004] The above contents are only used to assist in understanding the technical solution of the present application, and do not constitute an admission that the above contents are the closest prior art to the present application. Summary of the invention

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

[0006] The technical solution adopted by the present application to solve its technical problems is an electric wheel hub with a motor clutch structure, including: a central shaft, a wheel body, a transmission assembly and a clutch assembly, wherein the wheel body is a hollow structure and is rotatably arranged on the central shaft; the transmission assembly includes: a driving motor, a reduction gear set, a main gear, a positioning sleeve, and a transmission member; the transmission member is fixedly connected to the wheel body and is rotatable relative to the central shaft, the main gear is fixedly connected to the positioning sleeve and is rotatable relative to the central shaft, and the driving motor drives the main gear to rotate through the reduction gear set; the clutch assembly includes: a clutch motor, a clutch transmission mechanism, a shift fork, a clutch member, and a spring; the clutch member can be movably mounted on the positioning sleeve or simultaneously mounted on the positioning sleeve and the transmission member to connect the two; the spring is used to drive the clutch member to move in the direction of the transmission member; the shift fork is connected to the clutch motor through the clutch transmission mechanism, and is used to drive the clutch member to overcome the spring force to keep it away from the transmission member and to disengage the transmission member from the positioning sleeve.

[0007] In some embodiments, the clutch transmission mechanism includes a guide frame, a screw rod, a slider, a gear box and a gear set. The shift fork is installed on the slider, and the slider is slidably set on the guide frame. The guide frame is installed on the gear box. The clutch motor is connected to the gear set inside the gear box and transmits power to the screw rod, which drives the slider to slide in the guide connection and thereby drives the shift fork to move.

[0008] In some embodiments, a control board is also included, and the drive motor and the clutch motor are connected to the control board through electrical connection or signal.

[0009] In some embodiments, it also includes a support frame, which includes 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 axis, the positioning sleeve and the transmission member are rotatably sleeved on the support sleeve, and the second support plate is overlapped on the first support plate at intervals.

[0010] In some embodiments, the transmission assembly and the clutch assembly are mounted on the first support plate and placed in the space between the first support plate and the second support plate.

[0011] In some embodiments, the reduction gear group includes a worm, a worm wheel, a first gear, a second gear, and a third gear. The worm is formed on the motor shaft of the drive motor, the worm wheel is coaxial with the first gear, the second gear and the third gear are coaxial, the first gear is meshed with the second gear, and the third gear is meshed with the main gear.

[0012] In some embodiments, the gear set of the clutch transmission mechanism includes a first bevel gear, a second bevel gear, a fourth gear, and a fifth gear. The first bevel gear is arranged on the motor shaft of the clutch motor, the second bevel gear is coaxial with the fourth gear, the fifth gear is coaxial with the screw, the first bevel gear is meshed with the second bevel gear, and the fourth gear is meshed with the fifth gear.

[0013] In some embodiments, the outer contours of the positioning sleeve and the transmission member, and the inner contour of the clutch member, are non-circular.

[0014] The beneficial effect of the present application is that the present application combines the positioning sleeve and the transmission member together through a clutch member, so that the transmission assembly can drive the wheel body to rotate. When the wheel body needs to stop rotating, the clutch motor drives the fork to press the clutch member downward, and the positioning sleeve and the transmission member are no longer combined, causing the drive motor to idle, effectively preventing the drive motor from being damaged due to emergency physical braking. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 It is a three-dimensional structural schematic diagram of this application.

[0017] Figure 2 It is a schematic diagram of the internal structure of this application.

[0018] Figure 3 It is a schematic diagram of the internal specific structure of this application.

[0019] Figure 4 It is a schematic diagram of the transmission assembly of the present application.

[0020] Figure 5 It is a schematic diagram of the clutch assembly and clutch transmission mechanism of the present application.

[0021] Figure 6 It is a side cross-sectional schematic diagram of the present application.

[0022] Explanation of the accompanying drawings: 1. Central axis; 2. Wheel body; 3. Transmission assembly; 31. Driving motor; 32. Reduction gear set; 321. Worm; 322. Worm wheel; 323. First gear; 324. Second gear; 325. Third gear; 33. Main gear; 34. Positioning sleeve; 35. Transmission member; 4. Clutch assembly; 41. Clutch motor; 42. Clutch transmission mechanism; 421. Guide frame; 422. Screw rod; 423. Slider; 424. Gear box; 425. Gear set; 4251. First bevel gear; 4252. Second bevel gear; 4253. Fourth gear; 4254. Fifth gear; 43. Shift fork; 44. Clutch member; 45. Spring; 5. Support frame; 51. First support plate; 52. Support sleeve; 53. Second support plate. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to achieve. When the combination of technical solutions is contradictory or cannot be achieved, it should be considered that the combination of such technical solutions does not exist and is not within the scope of protection of this application.

[0024] In the embodiments of this application, please refer to Figure 1-6 As shown, the present application provides an electric wheel hub with a motor clutch structure, which mainly includes: a central shaft 1, a wheel body 2, a transmission assembly 3 and a clutch assembly 4, wherein the wheel body 2 is a hollow structure and is rotatably arranged on the central shaft 1; the transmission assembly 3 includes: a driving motor 31, a reduction gear set 32, a main gear 33, a positioning sleeve 34, and a transmission member 35; the transmission member 35 is fixedly connected to the wheel body 2 and is rotatable relative to the central shaft 1, the main gear 33 is fixedly connected to the positioning sleeve 34 and is rotatable relative to the central shaft 1, and the driving motor 31 is connected to the central shaft 1 through the reduction gear set 32 drives the main gear 33 to rotate; the clutch assembly 4 includes: a clutch motor 41, a clutch transmission mechanism 42, a shift fork 43, a clutch member 44, and a spring 45; the clutch member 44 can be movably mounted on the positioning sleeve 34 or simultaneously mounted on the positioning sleeve 34 and the transmission member 35 to connect the two; the spring 45 is used to drive the clutch member 44 to move in the direction of the transmission member 35; the shift fork 43 is connected to the clutch motor 41 through the clutch transmission mechanism 42, and is used to drive the clutch member 44 to overcome the force of the spring 45 to make it away from the transmission member 35 and make the transmission member 35 disengage from the positioning sleeve 34.

[0025] In this way, when it is necessary to achieve the engaged state, that is, when the electric wheel hub is in a state where it can rotate, the shift fork 43 is in the initial state, and no force is applied to the clutch member 44. The clutch member 44 is lifted up under the action of the spring 45, so that the positioning sleeve 34 and the transmission member 35 are combined together. Under the action of the drive motor 31, the positioning sleeve 34 rotates and then synchronously drives the transmission member 35 to rotate, so as to realize the rotation of the wheel body 2; when it is necessary to achieve the disengaged state, that is, it is necessary to make the electric wheel hub lose the driving force quickly, the clutch motor 41 is used to drive the shift fork 43 to drive the clutch member 44 away from the transmission member 35, so that the positioning sleeve 34 and the transmission member 35 are separated, and at this time the positioning sleeve 34 is idling, and the driving force is no longer transmitted to the transmission member 35 Some preferred / improved embodiments based on the above embodiments will be described below. Any one of the following embodiments may be selected, or multiple embodiments may be selected and combined.

[0026] Reference Figure 5 As shown, in order to enable the fork 43 to be driven by the clutch motor 41, the clutch transmission mechanism 42 includes a guide frame 421, a screw rod 422, a slider 423, a gear box 424 and a gear set 425. The fork 43 is installed on the slider 423, and the slider 423 is slidably set on the guide frame 421. The guide frame 421 is installed on the gear box 424. The clutch motor 41 is connected to the gear set 425 inside the gear box 424 and transmits power to the screw rod 422. The slider 423 is driven by the screw rod 422 to slide in the guide connection and then drive the fork 43 to move.

[0027] As an illustration, when the clutch motor 41 stops receiving the start signal, the clutch motor 41 can start to reverse for a period of time to reset the slider 423; or the clutch motor 41 can start to rotate forward for a period of time and then the bidirectional lead screw 422 touches the bottom to reset the slider 423.

[0028] Preferably, a control board is further included, and the drive motor 31 and the clutch motor 41 are connected to the control board through electrical connection or signal connection, so that the start of the drive motor 31 and the clutch motor 41 can be better controlled through the control board.

[0029] Reference Figure 2-3 As shown, the support frame 5 is also included, and the support frame 5 includes a first support plate 51, a support sleeve 52, and a second support plate 53. The support sleeve 52 is integrally formed with the first support plate 51, and the support sleeve 52 is sleeved on the central axis 1. The positioning sleeve 34 and the transmission member 35 are rotatably sleeved on the support sleeve 52, and the second support plate 53 is spaced and covered on the first support plate 51. The transmission assembly 3 and the clutch assembly 4 are installed on the first support plate 51 and placed in the space between the first support plate 51 and the second support plate 51. In this way, the transmission assembly 3 and the clutch assembly 4 can be stably installed.

[0030] Reference Figure 4 As shown, the reduction gear set 32 ​​includes a worm 321, a worm wheel 322, a first gear 323, a second gear 324, and a third gear 325. The worm 321 is formed on the motor shaft of the drive motor 31, the worm wheel 322 is coaxial with the first gear 323, the second gear 324 and the third gear 325 are coaxial, the first gear 323 is meshed with the second gear 324, and the third gear 325 is meshed with the main gear 33.

[0031] Reference Figure 5 As shown, in order to enable the clutch motor 41 to drive the screw rod 422 to rotate, the gear set 425 of the clutch transmission mechanism 42 includes a first bevel gear 4251, a second bevel gear 4252, a fourth gear 4253, and a fifth gear 4254. The first bevel gear 4251 is arranged on the motor shaft of the clutch motor 41, the second bevel gear 4252 is coaxial with the fourth gear 4253, the fifth gear 4254 is coaxial with the screw rod 422, the first bevel gear 4251 is meshed with the second bevel gear 4252, and the fourth gear 4253 is meshed with the fifth gear 4254.

[0032] Specifically, in order to enable the driving motor 31 to transmit the power to the wheel body 2 for rotation, the outer contours of the positioning sleeve 34 and the transmission member 35 and the inner contour of the clutch member 44 are non-circular.

[0033] 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. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed herein.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present application, and the aforementioned embodiments are only used to illustrate the technical solution of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that it is still possible to modify the technical solutions recorded in the aforementioned embodiments, or to make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not drive the essence of the corresponding technical solutions away from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An electric wheel hub with a motor clutch structure, characterized in that: It includes a central shaft, a wheel body, a transmission assembly and a clutch assembly, wherein the wheel body is a hollow structure and is rotatably arranged on the central shaft; The transmission assembly includes: a driving motor, a reduction gear set, a main gear, a positioning sleeve, and a transmission member; the transmission member is fixedly connected to the wheel body and is rotatable relative to the central axis, the main gear is fixedly connected to the positioning sleeve and is rotatable relative to the central axis, and the driving motor drives the main gear to rotate through the reduction gear set; The clutch assembly includes: a clutch motor, a clutch transmission mechanism, a shift fork, a clutch member, and a spring; the clutch member can be movably mounted on a positioning sleeve or simultaneously mounted on the positioning sleeve and the transmission member to connect the two; the spring is used to drive the clutch member to move in the direction of the transmission member; the shift fork is connected to the clutch motor through the clutch transmission mechanism, and is used to drive the clutch member to overcome the spring force to move it away from the transmission member and to separate the transmission member from the positioning sleeve.

2. The electric wheel hub with a motor clutch structure according to claim 1, characterized in that: The clutch transmission mechanism includes a guide frame, a screw rod, a slider, a gear box and a gear set. The shift fork is installed on the slider, and the slider is slidably set on the guide frame. The guide frame is installed on the gear box. The clutch motor is connected to the gear set inside the gear box and transmits power to the screw rod. The slider is driven by the screw rod to slide in the guide connection and then drive the shift fork to move.

3. The electric wheel hub with a motor clutch structure according to claim 1, characterized in that: It also includes a control board, and the drive motor and the clutch motor are connected to the control board through electrical connection or signal.

4. The electric wheel hub with a motor clutch structure according to claim 1, characterized in that: It also includes a support frame, which includes 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 axis, the positioning sleeve and the transmission member are rotatably sleeved on the support sleeve, and the second support plate is overlapped on the first support plate at intervals.

5. The electric wheel hub with a motor clutch structure according to claim 4, characterized in that: The transmission assembly and the clutch assembly are mounted on the first support plate and are placed in the space between the first support plates.

6. The electric wheel hub with a motor clutch structure according to claim 1, characterized in that: The reduction gear set includes a worm, a worm wheel, a first gear, a second gear, and a third gear. The worm is formed on the motor shaft of the drive motor, the worm wheel is coaxial with the first gear, the second gear and the third gear are coaxial, the first gear is meshed with the second gear, and the third gear is meshed with the main gear.

7. The electric wheel hub with a motor clutch structure according to claim 1, characterized in that: The gear set of the clutch transmission mechanism includes a first bevel gear, a second bevel gear, a fourth gear, and a fifth gear. The first bevel gear is arranged on the motor shaft of the clutch motor, the second bevel gear is coaxial with the fourth gear, the fifth gear is coaxial with the screw rod, the first bevel gear is meshed with the second bevel gear, and the fourth gear is meshed with the fifth gear.

8. The electric wheel hub with a motor clutch structure according to claim 1, characterized in that: The outer contours of the positioning sleeve and the transmission member, and the inner contour of the clutch member are non-circular.

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