Lightweight moped wheel hub motor

Abstract

The utility model belongs to the technical field of hub motors, and particularly relates to a lightweight moped hub motor, which comprises a fixed shaft and a hub motor main body fixed on the fixed shaft, a threading hole is processed on the fixed shaft, the lightweight moped hub motor further comprises an auxiliary support assembly, and the auxiliary support assembly comprises a fixed plate, a fixed shaft and a fixed shaft, a mounting plate; a limiting plate; the threaded column is fixed on the bottom surface of the mounting plate; the locking nut is mounted at the extending end of the threaded column in a thread screwing manner; the telescopic spring is arranged on the threaded column in a sleeving manner and is located between the mounting plate and the limiting plate; according to the utility model, through the arrangement of the auxiliary supporting assembly, the fixing shaft and the moped frame can be further reinforced, and the auxiliary supporting assembly has a buffering and anti-seismic function, so that the stability of the fixing shaft and the safety of the fixing shaft and the hub motor main body can be improved, and the service life of the fixing shaft and the hub motor main body is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of wheel hub motors, and in particular relates to a lightweight power-assisted wheel hub motor. Background Art

[0002] Currently, the electric assisted bicycles on the market that use torque sensors can be basically divided into two categories of power assist system structures, one is called the mid-mounted motor torque type, and the other is called the hub motor torque type.

[0003] The hub motor is a motor designed to integrate the vehicle's power system, transmission system, and braking system, and is an important component of the power-assisted bicycle.

[0004] In the prior art, the hub motor is usually fixed to the frame, and the wheel of the power-assisted bicycle is fixed to the hub motor. The hub motor only relies on the central fixed shaft for support and lacks the necessary auxiliary support and buffer components, which makes the fixed shaft bear too heavy a burden. Especially when the power-assisted bicycle is driving on bumpy roads, long-term violent shaking can easily cause the fixed shaft to bend, affecting normal use.

[0005] In order to solve the above problems, this application proposes a lightweight power-assisted wheel hub motor. Utility Model Content

[0006] In order to solve the above problems existing in the prior art, the utility model provides a lightweight power-assisted wheel hub motor, which is easy to use and has high safety performance.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: a lightweight power-assisted wheel hub motor, comprising a fixed shaft and a wheel hub motor body fixed on the fixed shaft, wherein a threading hole is machined on the fixed shaft, and further comprising an auxiliary support assembly, wherein the auxiliary support assembly comprises:

[0008] a fixed plate, the fixed plate being fixed on the fixed shaft;

[0009] A mounting plate, the mounting plate being located above the fixing plate and fixedly connected to the frame of the power-assisted bicycle;

[0010] a limiting plate, the limiting plate being fixed to the top end of the fixing plate;

[0011] A threaded column, the threaded column is fixed to the bottom surface of the mounting plate, and the threaded column passes through the limiting plate;

[0012] A locking nut, the locking nut being mounted on the protruding end of the threaded column by screwing;

[0013] A telescopic spring is sleeved on the threaded column and is located between the mounting plate and the limiting plate.

[0014] As a preferred technical solution of the present invention, there are two fixed plates distributed at intervals, and the limiting plates are fixed to the top ends of the inner sides of the two fixed plates.

[0015] As a preferred technical solution of the utility model, it also includes:

[0016] A reinforcing plate is fixed between the two fixing plates.

[0017] As a preferred technical solution of the utility model, it also includes:

[0018] The four damping telescopic rods are diagonally distributed and fixed between the mounting plate and the fixing plate.

[0019] As a preferred technical solution of the present invention, a plurality of threaded columns are evenly spaced along the horizontal direction.

[0020] As a preferred technical solution of the present utility model, the hub motor body includes:

[0021] a stator winding, wherein the stator winding is fixed on the fixed shaft;

[0022] a rotor magnet, wherein the rotor magnet is sleeved on the stator winding;

[0023] a rotating cover, the rotating cover being rotatably connected to the fixed shaft via a bearing, and the rotor magnet being fixed to an inner wall of the rotating cover;

[0024] a fixed sleeve, the fixed sleeve being fixedly connected to the rotating cover;

[0025] a first end cover, the first end cover being rotatably mounted on the end of the fixed shaft by a bearing, and one end of the fixed sleeve being fixedly connected to the first end cover;

[0026] The second end cover is rotatably mounted on the fixed shaft by means of a bearing, and one end of the fixed sleeve away from the first end cover is fixedly connected to the second end cover.

[0027] As a preferred technical solution of the present utility model, the hub motor body further includes:

[0028] a central gear, the central gear being rotatably mounted on the fixed shaft by a bearing;

[0029] a mounting plate fixed on the fixed shaft;

[0030] A linkage gear, the linkage gear being rotatably mounted on the mounting plate by means of a bearing and meshing with the central gear;

[0031] An inner gear ring is fixed to the inner wall of the fixing sleeve and meshes with the linkage gear.

[0032] As a preferred technical solution of the present invention, there are three linkage gears distributed at equal intervals along the circumferential direction.

[0033] Compared with the prior art, the beneficial effects of the present invention are:

[0034] In the present invention, the auxiliary support assembly is provided to further reinforce the fixed shaft and the power-assisted bicycle frame, and the auxiliary support assembly has a buffering and anti-vibration function, which can improve the stability of the fixed shaft and the safety of the fixed shaft and the hub motor body, thereby extending the service life of the fixed shaft and the hub motor body.

[0035] Other additional advantages and benefits of the present application will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0037] Figure 1 It is a structural diagram of the utility model;

[0038] Figure 2 For this utility model Figure 1 A in the figure shows the enlarged structural diagram;

[0039] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model;

[0040] Figure 4 This is a schematic diagram of the axonometric structure of the rotary cover in the present invention;

[0041] Figure 5 This is a schematic diagram of the fixed shaft axonometric structure in the present utility model.

[0042] In the figure: 1. Fixed shaft; 11. Threading hole; 2. Hub motor body; 21. Stator winding; 22. Rotor magnet; 23. Rotating cover; 24. Fixed sleeve; 25. First end cover; 26. Second end cover; 27. Center gear; 28. Mounting plate; 29. Linkage gear; 210. Internal gear ring; 3. Auxiliary support assembly; 31. Fixed plate; 32. Reinforcement plate; 33. Mounting plate; 34. Limiting plate; 35. Threaded column; 36. Locking nut; 37. Telescopic spring; 38. Damping telescopic rod. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0044] See also Figure 1-Figure 5 The utility model provides the following technical solutions: a lightweight power-assisted wheel hub motor, comprising a fixed shaft 1 and a wheel hub motor body 2 fixed on the fixed shaft 1, a threading hole 11 being processed on the fixed shaft 1, and an auxiliary support assembly 3, and the auxiliary support assembly 3 includes: a fixing plate 31, a mounting plate 33, a limiting plate 34, a threaded column 35, a locking nut 36 and a telescopic spring 37.

[0045] Further, by Figure 1 and Figure 2 As shown, in this embodiment, the fixing plate 31 is fixed on the fixed shaft 1, the mounting plate 33 is located above the fixing plate 31, and the mounting plate 33 is fixedly connected to the frame of the power-assisted bicycle, the limiting plate 34 is fixed to the top of the fixing plate 31, the threaded column 35 is fixed to the bottom surface of the mounting plate 33, and the threaded column 35 passes through the limiting plate 34, the locking nut 36 is installed on the protruding end of the threaded column 35 by threaded engagement, the telescopic spring 37 is sleeved on the threaded column 35 and is located between the mounting plate 33 and the limiting plate 34. After adopting the above scheme, when in use, the fixed shaft 1 is fixed to the power-assisted bicycle by conventional means. The frame of the bicycle is fixed on the wheel hub motor body 2, and the wheel hub motor body 2 will drive the wheel to rotate after being energized; through the auxiliary support assembly 3, the mounting plate 33 is fixedly connected to the frame of the power-assisted bicycle by conventional means, thereby improving the stability of the installation of the fixed shaft 1, and when the power-assisted bicycle is traveling on a bumpy road, the vibration of the wheel is transmitted to the fixed shaft 1 and then to the fixed plate 31, and the telescopic spring 37 can effectively absorb the vibration of the fixed plate 31, thereby improving the stability of the fixed shaft 1 and the safety of the fixed shaft 1 and the wheel hub motor body 2, and extending the service life of the fixed shaft 1 and the wheel hub motor body 2.

[0046] Preferably, by Figure 1 and Figure 2 As shown, in this embodiment, there are two fixed plates 31 distributed at intervals, and the limiting plates 34 are fixed to the top of the inner side surfaces of the two fixed plates 31. After adopting the above scheme, when in use, the fixed shaft 1 is connected through the two fixed plates 31, which can effectively improve the stability of the installation of the fixed shaft 1.

[0047] Preferably, by Figure 1 and Figure 2 As shown, this embodiment also includes: a reinforcing plate 32, which is fixed between the two fixing plates 31. After adopting the above solution, the reinforcing plate 32 can effectively improve the structural strength of the two fixing plates 31, is not easy to bend, and greatly improves the stability of the installation of the fixed shaft 1.

[0048] Preferably, by Figure 1 and Figure 2 As shown, this embodiment also includes: a damping telescopic rod 38, four damping telescopic rods 38 are diagonally distributed and fixed between the mounting plate 33 and the fixing plate 31, wherein the damping telescopic rod 38 is a telescopic structure composed of two hollow cylindrical components. After adopting the above design, the damping telescopic rod 38 has a shock-reducing effect, which can effectively reduce the frequency of vibration. When the power-assisted vehicle is driving on a bumpy road, it can quickly return the wheels to a stable state.

[0049] Preferably, by Figure 1 and Figure 2 As shown, in this embodiment, a plurality of threaded columns 35 are evenly spaced along the horizontal direction, which effectively ensures the stability of the connection between the mounting plate 33 and the limiting plate 34 and improves the buffering and shock-resistant effect.

[0050] Optionally, by Figure 1 and Figure 3 As shown, in this embodiment, the hub motor body 2 includes: a stator winding 21, a rotor magnet 22, a rotating cover 23, a fixed sleeve 24, a first end cover 25 and a second end cover 26. The stator winding 21 is fixed to the fixed shaft 1, the rotor magnet 22 is sleeved on the stator winding 21, the rotating cover 23 is rotatably connected to the fixed shaft 1 using a bearing, the rotor magnet 22 is fixed to the inner wall of the rotating cover 23, the fixed sleeve 24 is fixedly connected to the rotating cover 23, and the first end cover 25 is rotatably mounted on the end of the fixed shaft 1 using a bearing. One end of the fixed sleeve 24 is fixedly connected to the first end cover 25, and the second end cover 26 is rotatably mounted on the fixed shaft 1 by means of a bearing. The end of the fixed sleeve 24 away from the first end cover 25 is fixedly connected to the second end cover 26. After adopting the above scheme, when in use, the wheel of the power-assisted vehicle is fixed on the fixed sleeve 24. When the hub motor body 2 is energized, the rotor magnet 22 rotates, and at the same time drives the rotating cover 23 to rotate. The rotating cover 23 drives the fixed sleeve 24, the first end cover 25 and the second end cover 26 to rotate, so that the wheel rotates.

[0051] It should be noted that the hub motor body 2 also includes a brake assembly, which is located on the inner side of the stator winding 21 and interacts with the rotating cover 23 to realize the braking function. The brake assembly of the hub motor body 2 is a necessary component of the traditional hub motor, and its working principle is a well-known existing technology, which will not be elaborated in this article.

[0052] Preferably, by Figure 1 、 Figure 3 and Figure 4 As shown, in this embodiment, the hub motor body 2 also includes: a central gear 27, a mounting plate 28, a linkage gear 29 and an inner ring gear 210. The central gear 27 is rotatably mounted on the fixed shaft 1 by means of a bearing, the mounting plate 28 is fixed on the fixed shaft 1, and the linkage gear 29 is rotatably mounted on the mounting plate 28 by means of a bearing, and the linkage gear 29 is meshed with the central gear 27, and the inner ring gear 210 is fixed to the inner wall of the fixed sleeve 24 and meshed with the linkage gear 29. After adopting the above scheme, when working, the rotating cover 23 will drive the inner ring gear 210 to rotate when it rotates, and the inner ring gear 210 drives the linkage gear 29 to rotate through the meshing action, and the linkage gear 29 drives the central gear 27 to rotate through the meshing action, ensuring the stability of the inner ring gear 210. The inner ring gear 210 will also drive the fixed sleeve 24 to rotate, and cooperate with the rotating cover 23 to make the fixed sleeve 24 more stable and achieve a large torque output force.

[0053] Preferably, by Figure 1 、 Figure 3 and Figure 4 As shown, in this embodiment, three linkage gears 29 are evenly spaced along the circumferential direction. The linkage gears 29 and the central gear 27 are used to support the inner gear ring 210 from the inside to ensure the stability of the inner gear ring 210.

[0054] The circuit connection involved in the present invention is a common means used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments, and it belongs to the widely used existing technology.

[0055] Components not described in detail herein are prior art.

[0056] The working principle and use process of the utility model: When the hub motor body 2 of the utility model is in use, the fixed shaft 1 is fixed to the frame of the power-assisted bicycle by conventional means, and the wheel is fixed to the hub motor body 2. When the hub motor body 2 is energized, it will drive the wheel to rotate;

[0057] Specifically, when the hub motor body 2 is powered on, the rotor magnet 22 rotates, and at the same time drives the rotating cover 23 to rotate. The rotating cover 23 drives the fixed sleeve 24, the first end cover 25 and the second end cover 26 to rotate, so that the wheel rotates. When the rotating cover 23 rotates, it also drives the inner ring gear 210 to rotate. The inner ring gear 210 drives the linkage gear 29 to rotate through meshing action. The linkage gear 29 drives the center gear 27 to rotate through meshing action, ensuring the stability of the inner ring gear 210. The inner ring gear 210 also drives the fixed sleeve 24 to rotate, and cooperates with the rotating cover 23 to make the fixed sleeve 24 more stable and achieve a high torque output force.

[0058] In the present invention, by setting up the auxiliary support assembly 3, the mounting plate 33 is fixedly connected to the frame of the power-assisted bicycle by conventional means, thereby improving the stability of the installation of the fixed shaft 1, and when the power-assisted bicycle is traveling on a bumpy road, the vibration of the wheel is transmitted to the fixed shaft 1 and then to the fixed plate 31, and the telescopic spring 37 can effectively absorb the vibration of the fixed plate 31, thereby improving the stability of the fixed shaft 1 and the safety of the fixed shaft 1 and the hub motor body 2, and extending the service life of the fixed shaft 1 and the hub motor body 2.

[0059] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A lightweight power-assisted wheel hub motor, comprising a fixed shaft (1) and a wheel hub motor body (2) fixed on the fixed shaft (1), wherein a threading hole (11) is machined on the fixed shaft (1), and characterized in that: It also includes an auxiliary support assembly (3), and the auxiliary support assembly (3) includes: A fixed plate (31), the fixed plate (31) being fixed on the fixed shaft (1); a mounting plate (33), the mounting plate (33) being located above the fixing plate (31), and the mounting plate (33) being fixedly connected to the frame of the power-assisted bicycle; a limiting plate (34), the limiting plate (34) being fixed to the top end of the fixing plate (31); A threaded column (35), the threaded column (35) being fixed to the bottom surface of the mounting plate (33), and the threaded column (35) passing through the limiting plate (34); A locking nut (36) is mounted on the protruding end of the threaded column (35) by screwing; A telescopic spring (37) is sleeved on the threaded column (35) and is located between the mounting plate (33) and the limiting plate (34).

2. The lightweight power-assisted wheel hub motor according to claim 1, characterized in that: There are two fixed plates (31) spaced apart from each other, and the limiting plates (34) are fixed to the top ends of the inner sides of the two fixed plates (31).

3. The lightweight power-assisted wheel hub motor according to claim 2, characterized in that: Also includes: A reinforcing plate (32), wherein the reinforcing plate (32) is fixed between the two fixing plates (31).

4. The lightweight power-assisted wheel hub motor according to claim 1, characterized in that: Also includes: Damping telescopic rods (38), wherein the four damping telescopic rods (38) are distributed diagonally and fixed between the mounting plate (33) and the fixing plate (31).

5. The lightweight power-assisted wheel hub motor according to claim 1, characterized in that: A plurality of threaded columns (35) are distributed at equal intervals along the horizontal direction.

6. The lightweight power-assisted wheel hub motor according to claim 1, characterized in that: The hub motor body (2) comprises: a stator winding (21), wherein the stator winding (21) is fixed on the fixed shaft (1); a rotor magnet (22), wherein the rotor magnet (22) is sleeved on the stator winding (21); A rotating cover (23), the rotating cover (23) being rotatably connected to the fixed shaft (1) via a bearing, and the rotor magnet (22) being fixed to an inner wall of the rotating cover (23); A fixed sleeve (24), the fixed sleeve (24) being fixedly connected to the rotating cover (23); a first end cover (25), the first end cover (25) being rotatably mounted on the end of the fixed shaft (1) by means of a bearing, and one end of the fixed sleeve (24) being fixedly connected to the first end cover (25); A second end cover (26) is rotatably mounted on the fixed shaft (1) by means of a bearing, and one end of the fixed sleeve (24) away from the first end cover (25) is fixedly connected to the second end cover (26).

7. The lightweight power-assisted wheel hub motor according to claim 6, characterized in that: The hub motor body (2) further comprises: a central gear (27), the central gear (27) being rotatably mounted on the fixed shaft (1) by means of a bearing; a mounting plate (28), the mounting plate (28) being fixed on the fixed shaft (1); A linkage gear (29), the linkage gear (29) being rotatably mounted on the mounting plate (28) by means of a bearing, and the linkage gear (29) being meshed with the central gear (27); An inner gear ring (210), the inner gear ring (210) is fixed to the inner wall of the fixed sleeve (24) and meshes with the linkage gear (29).

8. The lightweight power-assisted wheel hub motor according to claim 7, characterized in that: There are three linkage gears (29) distributed at equal intervals along the circumferential direction.

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