A hub motor with an electromagnetic brake

Abstract

A hub motor with an electromagnetic brake includes a hub motor body with a built-in brake disc. The brake disc is flexibly connected to the motor rotor within the hub motor body via an elastic component. A fixed first fixing plate is located on the left side of the brake disc, and a movable second fixing plate is located on the right side. The first fixing plate is connected to a solenoid valve via a fixing post. The second fixing plate is sleeved on the fixing post and can move left and right along the fixing post. The second fixing plate is also connected to a manual trigger for manually pulling the second fixing plate to brake or release the brake. The hub motor with an electromagnetic brake of this invention achieves a flexible connection between the brake disc and the motor rotor by setting an elastic component. The elastic component can clamp the brake disc between the two brake pads under elastic action, realizing the function of simultaneous braking by both brake pads.

Description

Technical Field

[0001] This utility model relates to the field of hub motor technology, and in particular to a hub motor with an electromagnetic brake. Background Technology

[0002] Currently, most existing electromagnetic brakes employ a multi-pawl structure, as illustrated in Chinese patents CN209913656U and CN218071220U. The disclosed solutions achieve braking by setting multiple oblong holes and brake pads on the brake disc. However, these technologies suffer from the following drawbacks: 1. High noise levels during braking, affecting user experience; 2. Rigid contact between the brake pads and brake disc, leading to wear and reduced lifespan; 3. Complex structure and high maintenance costs. Therefore, this application provides a hub motor with an electromagnetic brake to address the problems of unstable braking performance and complex structure in existing technologies. Utility Model Content

[0003] The technical problem to be solved by this utility model is: in order to solve the problems of high noise and rapid wear in the prior art, this utility model provides a hub motor with an electromagnetic brake.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: a hub motor with an electromagnetic brake, including a hub motor body, a built-in brake disc in the hub motor body, the brake disc being flexibly connected to the motor rotor in the hub motor body through an elastic component, a fixed first fixing plate on the left side of the brake disc, and a movable second fixing plate on the right side; the first fixing plate is connected to a solenoid valve through a fixing post, the second fixing plate is sleeved on the fixing post and can move left and right along the fixing post, the second fixing plate is also connected to a manual trigger, the manual trigger being used to manually pull the second fixing plate to achieve braking or releasing braking; brake pads are provided on the first and second fixing plates.

[0005] Furthermore, the first fixing plate is provided with at least one brake pad, the second fixing plate is provided with at least one brake pad, and the brake disc is disposed between the first fixing plate and the second fixing plate. The two sides of the brake disc contact the brake pads of the first fixing plate and the second fixing plate respectively to achieve braking.

[0006] Furthermore, the solenoid valve controls the movement of the second fixed plate. When the solenoid valve is energized, the second fixed plate moves to the right along the fixed post to release the brake. When the solenoid valve is de-energized, the spring pushes the second fixed plate to the left, causing the brake pad to contact the brake disc. Since the brake disc is connected to the motor rotor through an elastic component, the brake disc moves to the left under the elastic action, thereby contacting the brake pad on the first fixed plate, achieving the effect of simultaneous braking by both left and right brake pads.

[0007] Furthermore, the elastic component uses a silicone pad or a spring lever. The silicone pad is made of elastic damping material and has a thickness of 1-3 mm. Using elastic damping material on the silicone pad can effectively reduce vibration and noise during braking.

[0008] Furthermore, the manual trigger is provided with a trigger hole, and a steel ball is provided in the trigger hole. The manual trigger is connected to the second fixing plate by a screw. The manual trigger moves the second fixing plate by pulling the screw, thereby realizing manual braking.

[0009] Furthermore, when the manual trigger is rotated, the trigger hole slides out of the steel ball, and the steel ball pushes the manual trigger to move 0.3-1 mm. The manual trigger pulls the second fixing plate through the screw, and the second fixing plate drives the brake pad to leave the brake disc, thereby releasing the braking of the motor rotor. When the manual trigger is pulled in the opposite direction, the manual trigger drives the second fixing plate to reset, and the brake pad of the second fixing plate contacts the brake disc, thereby achieving braking of the motor rotor.

[0010] Furthermore, the fixing post is made of magnetic metal material to fix the first fixing plate and guide the movement of the second fixing plate; the brake disc is made of wear-resistant metal material and the brake pads are made of wear-resistant composite material to improve braking efficiency and service life.

[0011] The beneficial effects of this utility model are:

[0012] The hub motor with electromagnetic brake described in this utility model achieves a flexible connection between the brake disc and the motor rotor by incorporating an elastic component. This makes the braking process smoother, reduces impact and vibration during braking, and thus improves the stability of the braking effect. The elastic component can clamp the brake disc between the two brake pads under elastic force, enabling simultaneous braking by both brake pads. Furthermore, the flexible connection of the elastic component and the optimized design of the brake pads effectively reduce braking noise, and the flexible contact reduces wear between the brake pads and the brake disc, increasing service life. The manual trigger provides users with a way to manually brake and release the brake, increasing the flexibility of use. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 This is a front view of the hub motor with electromagnetic brake according to a preferred embodiment of the present invention;

[0015] Figure 2 This is a schematic diagram of the structure of the hub motor with electromagnetic brake according to a preferred embodiment of the present invention;

[0016] Figure 3This is a schematic diagram of a hub motor with an electromagnetic brake according to a preferred embodiment of the present invention;

[0017] Figure 4 for Figure 3 Sectional view along line AA;

[0018] In the diagram, 1. Hub motor body, 2. Brake disc, 3. Motor rotor, 4. Silicone gasket, 5. First fixing plate, 6. Second fixing plate, 7. Fixing post, 8. Solenoid valve, 9. Manual trigger, 10. Brake pad, 11. Spring, 12. Trigger hole, 13. Steel ball, 14. Screw. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0020] In the description of this utility model, it should be understood that the terms "upper", "lower", "horizontal", "top", "inner", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention 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. Therefore, they should not be construed as limiting the present invention.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] like Figure 1 As shown, a hub motor with an electromagnetic brake includes a hub motor body 1, a built-in brake disc 2, and a flexible connection between the brake disc 2 and the motor rotor 3 inside the hub motor body 1 via an elastic component 4. A fixed first fixing plate 5 is provided on the left side of the brake disc 2, and a movable second fixing plate 6 is provided on the right side. The first fixing plate 5 is connected to a solenoid valve 8 via a fixing post 7. The second fixing plate 6 is sleeved on the fixing post 7 and can move left and right along the fixing post 7. The second fixing plate 6 is also connected to a manual trigger 9, which is used to manually pull the second fixing plate 6 to achieve braking or releasing the brake.

[0023] The first fixing plate 5 and the second fixing plate 6 each have at least one brake pad 10. The brake disc 2 is positioned between the first fixing plate 5 and the second fixing plate 6. Both sides of the brake disc 2 contact the brake pads 10 on the first fixing plate 5 and the second fixing plate 6 respectively to achieve braking. The solenoid valve 8 controls the movement of the second fixing plate 6. When the solenoid valve 8 is energized, the second fixing plate 6 moves to the right along the fixing post 7 to release the brake. When the solenoid valve 8 is de-energized, the spring 11 pushes the second fixing plate 6 to the left, causing the brake pads 10 to contact the brake disc 2. Since the brake disc 2 is connected to the motor rotor 3 via the elastic component 4, it moves to the left under elastic action, thus contacting the brake pads 10 on the first fixing plate 5, achieving the effect of simultaneous braking by both left and right brake pads 10. The elastic component 4 uses a silicone pad or a spring paddle. The silicone pad uses an elastic damping material with a thickness of 1-3 mm. Using an elastic damping material on the silicone pad effectively reduces vibration and noise during braking.

[0024] The manual trigger 9 has a trigger hole 12, and a steel ball 13 is installed inside the trigger hole 12. The manual trigger 9 is connected to the second fixing plate 6 by a screw 14. The manual trigger 9 moves the second fixing plate 6 by pulling the screw 14, thereby achieving manual braking. When the manual trigger 9 is rotated, the trigger hole 12 slides out from the steel ball 13, and the steel ball 13 pushes the manual trigger 9 to move 0.5-1 mm. The manual trigger 9 pulls the second fixing plate 6 through the screw 14. The second fixing plate 6 drives the brake pad 10 away from the brake disc 2, thereby releasing the brake on the motor rotor 3. When the manual trigger 9 is pulled in the opposite direction, the manual trigger 9 drives the second fixing plate 6 to return to its original position, and the brake pad 10 of the second fixing plate 6 contacts the brake disc 2, thereby braking the motor rotor 3.

[0025] The fixing post 7 is made of magnetic metal material and is used to fix the first fixing piece 5 and guide the movement of the second fixing piece 6; the brake disc 2 is made of wear-resistant metal material and the brake pad 10 is made of wear-resistant composite material to improve braking efficiency and service life.

[0026] In operation, when the electromagnet is de-energized, the spring 11 pushes the second fixing plate 6 to the left, and the brake pad 10 of the second fixing plate 6 contacts the brake disc 2. Since the silicone gasket 4 between the brake disc 2 and the motor rotor 3 is flexibly connected, the brake disc 2, pushed by the brake pad 10 of the second fixing plate 6, collides with the brake pad 10 on the first fixing plate 5, braking the brake disc 2 and thus braking the motor rotor 3. When the electromagnet is energized, it generates magnetism that attracts the second fixing plate 6, causing it to move to the right. The brake pad 10 of the second fixing plate 6 separates from the brake disc 2, releasing the brake.

[0027] In the manual trigger section, when the trigger hole slides out of the steel ball, the manual trigger is pushed out by the steel ball by 0.5mm. The manual trigger drives the screw to pull the second fixing plate, and the second fixing plate drives its brake pad to leave the brake disc, releasing the brake on the motor rotor. When the trigger is pulled in the opposite direction, the manual trigger drives the second fixing plate to return to its original position, and the brake pad of the second fixing plate contacts the brake disc, realizing braking.

[0028] In this specification, the illustrative expressions of the terms do not necessarily refer to the same embodiments. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments.

[0029] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A hub motor with an electromagnetic brake, characterized in that, The device includes a hub motor body (1), which has a built-in brake disc (2). The brake disc (2) is flexibly connected to the motor rotor (3) inside the hub motor body (1) through an elastic component (4). A fixed first fixing plate (5) is provided on the left side of the brake disc (2), and a movable second fixing plate (6) is provided on the right side. The first fixing plate (5) is connected to a solenoid valve (8) through a fixing post (7). The second fixing plate (6) is sleeved on the fixing post (7) and can move left and right along the fixing post (7). The second fixing plate (6) is also connected to a manual trigger (9). The manual trigger (9) is used to manually pull the second fixing plate (6) to achieve braking or releasing the brake. Brake pads (10) are provided on the first fixing plate (5) and the second fixing plate (6).

2. The hub motor with electromagnetic brake according to claim 1, characterized in that, The first fixing plate (5) is provided with at least one brake pad (10), the second fixing plate (6) is provided with at least one brake pad (10), the brake disc (2) is disposed between the first fixing plate (5) and the second fixing plate (6), and the two sides of the brake disc (2) respectively contact the brake pads (10) of the first fixing plate (5) and the second fixing plate (6) to achieve braking.

3. The hub motor with electromagnetic brake according to claim 2, characterized in that, The solenoid valve (8) controls the movement of the second fixed plate (6). When the solenoid valve (8) is energized, the second fixed plate (6) moves to the right along the fixed column (7) to release the brake. When the solenoid valve (8) is de-energized, the spring (11) pushes the second fixed plate (6) to the left, so that the brake pad (10) contacts the brake disc (2). Since the brake disc (2) is connected to the motor rotor (3) through the elastic component (4), the brake disc (2) moves to the left under the elastic action, thereby contacting the brake pad (10) on the first fixed plate (5) to achieve the effect of braking with both left and right brake pads (10) at the same time.

4. The hub motor with electromagnetic brake according to claim 1, characterized in that, The elastic component (4) is made of silicone pad or spring tab; the silicone pad is made of elastic shock-absorbing material and the thickness of the silicone pad is 1-3 mm.

5. The hub motor with electromagnetic brake according to claim 1, characterized in that, The manual trigger (9) is provided with a trigger hole (12), and a steel ball (13) is provided in the trigger hole (12). The manual trigger (9) is connected to the second fixing plate (6) by a screw (14).

6. The hub motor with electromagnetic brake according to claim 5, characterized in that, When the manual trigger (9) is rotated, the trigger hole (12) slides out from the steel ball (13), and the steel ball (13) pushes the manual trigger (9) to move 0.3-1 mm. The manual trigger (9) pulls the second fixing plate (6) through the screw (14). The second fixing plate (6) drives the brake pad (10) away from the brake disc (2), thereby releasing the brake on the motor rotor (3). When the manual trigger (9) is pulled in the opposite direction, the manual trigger (9) drives the second fixing plate (6) to reset. The brake pad (10) of the second fixing plate (6) contacts the brake disc (2), thereby realizing the braking of the motor rotor (3).

7. The hub motor with electromagnetic brake according to claim 1, characterized in that, The fixing post (7) is made of magnetic metal material and is used to fix the first fixing piece (5) and guide the movement of the second fixing piece (6); the brake disc (2) is made of wear-resistant metal material and the brake pad (10) is made of wear-resistant composite material to improve braking efficiency and service life.

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