Motor one-way brake device, motor assembly and driving device

Abstract

The utility model provides a motor one-way brake device, a motor assembly and a driving device, the motor one-way brake device is used for being matched with a motor shaft of a motor, the motor one-way brake device comprises a one-way transmission part, the motor shaft is sleeved with the one-way transmission part, and the inner wall of the one-way transmission part is matched with the outer wall of the motor shaft; the friction piece is arranged on the outer side of the one-way transmission piece and is in friction fit with the outer wall of the one-way transmission piece, when the motor shaft rotates around the first direction, the outer wall of the one-way transmission piece is kept static, and when the motor shaft rotates around the second direction, the friction piece is in friction fit with the outer wall of the one-way transmission piece to stop rotation of the motor shaft. Through the technical scheme provided by the invention, the problems that in the related technology, when the motor shaft and the friction piece are in friction sliding, heating is serious, abrasion and failure are extremely easily caused, the current of the driver is increased, and the driver is damaged can be solved.

Description

Technical Field

[0001] This utility model relates to the field of motor self-locking technology, specifically to a one-way braking device for a motor, a motor assembly, and a drive device. Background Technology

[0002] The basic principle of an electric linear actuator is to use a drive motor to rotate a lead screw and nut, thereby converting the motion into linear motion. However, even when the drive motor stops, the linear actuator still bears the load. If the self-locking force of the linear actuator is insufficient to withstand the load, the actuator will slip. Therefore, a larger self-locking force is preferable for linear actuators.

[0003] In related technologies, braking mechanisms are typically installed on linear actuators, and these mechanisms are all contact-type braking structures, directly powered by friction components. The interaction force between the friction surfaces is relatively large, thus braking the actuator's motor shaft to a stop. However, the two friction surfaces in these technologies generate significant heat during sliding, which easily leads to wear and failure, resulting in increased current in the actuator and damage to it. Utility Model Content

[0004] This utility model provides a one-way braking device for a motor, a motor assembly, and a drive device to solve the problem in related technologies where the motor shaft and friction components generate severe heat when they rub and slide, which easily leads to wear and failure, resulting in increased current in the driver and damage to the driver.

[0005] According to one aspect of the present invention, a one-way braking device for a motor is provided for cooperating with the motor shaft of a motor. The one-way braking device includes: a one-way transmission member, which is sleeved on the motor shaft, and the inner wall of the one-way transmission member cooperates with the outer wall of the motor shaft; and a friction member, which is disposed on the outer side of the one-way transmission member and frictionally cooperates with the outer wall of the one-way transmission member. When the motor shaft rotates around a first direction, the outer wall of the one-way transmission member remains stationary. When the motor shaft rotates around a second direction, the friction member stops the rotation of the motor shaft by frictionally cooperating with the outer wall of the one-way transmission member.

[0006] Furthermore, the friction component includes a brake ring, which is sleeved on the outer periphery of the one-way transmission component, and the brake ring is engaged with the end cover of the motor to prevent rotation.

[0007] Furthermore, an anti-rotation mechanism is provided between the brake ring and the end cap. The anti-rotation mechanism includes a groove and a protrusion. The protrusion is provided on one of the inner wall of the end cap facing the brake ring and the outer wall of the brake ring, and the groove is provided on the other of the inner wall of the end cap facing the brake ring and the outer wall of the brake ring. The protrusion extends into the groove.

[0008] Furthermore, protrusions are provided on the inner wall of the end cap, and grooves are provided on the outer wall of the brake ring. The brake ring has multiple grooves, which are spaced apart along the circumferential direction of the brake ring. Multiple protrusions are provided on the end cap at positions corresponding to the multiple grooves.

[0009] Furthermore, an mounting cylinder is provided on the inner wall of the motor end cover facing the friction component, and a one-way transmission component is disposed inside the mounting cylinder. The friction component includes a friction ring, and the friction ring is in contact with the end face of the one-way transmission component.

[0010] Furthermore, the one-way braking device for the motor also includes an elastic support member, which is disposed between the friction member and the end cover; the elastic support member includes an elastic gasket, and a protrusion is provided in the middle of the elastic gasket in the direction towards the end cover, the protrusion abutting against the inner wall of the end cover, and the outer periphery of the elastic gasket abutting against the friction ring.

[0011] Furthermore, an mounting cylinder is provided on the inner wall of the end cover facing the brake ring, a rotating bearing is provided between the one-way transmission component and the mounting cylinder, the outer wall of the motor shaft is interference-fitted with the inner ring of the rotating bearing, and the outer ring of the rotating bearing is interference-fitted with the inner wall of the mounting cylinder; an annular washer is provided between the one-way transmission component and the rotating bearing, and the annular washer is sleeved on the motor shaft.

[0012] Furthermore, the rotation of the motor shaft of the motor is driven by the driver. The friction component includes a brake ring, which is sleeved on the outer periphery of the one-way transmission component. The brake ring is located between the one-way transmission component and the housing of the driver, and the brake ring is anti-rotationally engaged with the housing of the driver. The brake ring is provided with multiple clearance grooves, and the inner sidewall of the housing of the driver facing the brake ring is provided with multiple snap-fit ​​protrusions, and the multiple snap-fit ​​protrusions are provided one-to-one with the multiple clearance grooves.

[0013] According to another aspect of the present invention, a motor assembly is provided, including a motor and a motor one-way braking device disposed within the motor, wherein the motor one-way braking device is the motor one-way braking device provided above.

[0014] According to another aspect of the present invention, a driving device is provided, including a driver and a motor assembly, wherein the motor assembly is the motor one-way braking device provided above.

[0015] By applying the technical solution of this utility model, the one-way braking device for motors can cooperate with the motor shaft of the motor, so that the one-way braking device can play a role in stopping the rotation of the motor shaft and preventing the motor shaft from reversing. The one-way braking device for a motor includes a one-way transmission component and a friction component. The one-way transmission component is sleeved on the motor shaft, and its inner wall mates with the outer wall of the motor shaft. The friction component is located on the outer side of the one-way transmission component and engages in frictional contact with its outer wall. Specifically, when the motor shaft rotates in a first direction, the outer wall of the one-way transmission component remains stationary, ensuring that both the outer wall of the one-way transmission component and the friction component are stationary. When the motor shaft rotates in a second direction opposite to the first direction, the motor shaft engages with the one-way transmission component, causing the one-way transmission component to rotate along with the motor shaft. This allows the outer wall of the one-way transmission component to engage in frictional contact with the friction component. This prevents the motor shaft from rotating in the second direction due to frictional contact, avoiding wear and failure as seen in existing technologies, and also prevents increased current, thus extending the motor's lifespan. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0017] Figure 1 This diagram shows a schematic of the motor one-way braking device provided in Embodiment 1 of the present invention;

[0018] Figure 2 This diagram shows a schematic of the structure of the friction element sleeved on the unidirectional transmission component according to Embodiment 1 of the present invention;

[0019] Figure 3 A schematic diagram of the end cap provided in Embodiment 1 of this utility model is shown;

[0020] Figure 4 A schematic diagram of the motor one-way braking device provided in Embodiment 2 of this utility model is shown;

[0021] Figure 5 A schematic diagram of the end cap provided in Embodiment 2 of this utility model is shown;

[0022] Figure 6 A schematic diagram of the motor one-way braking device provided in Embodiment 3 of this utility model is shown;

[0023] Figure 7 A schematic diagram of the end cap provided in Embodiment 3 of this utility model is shown;

[0024] Figure 8 A schematic diagram of the structure of the unidirectional transmission component provided in Embodiment 4 of this utility model, which is installed in the outer casing, is shown.

[0025] The above figures include the following reference numerals:

[0026] 10. One-way transmission components;

[0027] 20. Friction component; 21. Brake ring; 22. Friction ring;

[0028] 30. Anti-rotation mechanism; 31. Groove; 32. Protrusion;

[0029] 41. Motor shaft; 42. End cover; 43. Mounting cylinder; 44. Elastic support; 441. Elastic gasket; 442. Protrusion; 45. Housing;

[0030] 50. Motor assembly; 51. Motor; 52. Motor one-way brake device. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0032] like Figures 1 to 8 As shown, this utility model embodiment provides a one-way braking device for a motor, which cooperates with the motor shaft 41 of a motor. The one-way braking device includes a one-way transmission component 10 and a friction component 20. The one-way transmission component 10 is sleeved on the motor shaft 41, and the inner wall of the one-way transmission component 10 cooperates with the outer wall of the motor shaft 41. The friction component 20 is disposed on the outer side of the one-way transmission component 10 and rubs against the outer wall of the one-way transmission component 10. When the motor shaft 41 rotates around a first direction, the outer wall of the one-way transmission component 10 remains stationary. When the motor shaft 41 rotates around a second direction, the friction component 20 stops the rotation of the motor shaft 41 by rubbing against the outer wall of the one-way transmission component 10.

[0033] The one-way braking device for motors provided in this embodiment can cooperate with the motor shaft 41 of the motor to stop the rotation of the motor shaft 41 and prevent the motor shaft 41 from reversing. The one-way braking device includes a one-way transmission component 10 and a friction component 20. The one-way transmission component 10 is sleeved on the motor shaft 41, and its inner wall cooperates with the outer wall of the motor shaft 41. The friction component 20 is disposed on the outer side of the one-way transmission component 10 and can frictionally cooperate with the outer wall of the one-way transmission component 10. Specifically, when the motor shaft 41 rotates around a first direction, the outer wall of the one-way transmission component 10 remains stationary, so that both the outer wall of the one-way transmission component 10 and the friction component 20 are stationary. When the motor shaft 41 rotates around the first direction... When rotating in the second direction, the motor shaft 41 can cooperate with the one-way transmission component 10, so that the one-way transmission component can rotate together with the motor shaft 41. This causes the outer wall of the one-way transmission component 10 to rub against the friction component 20. In this way, when the motor shaft 41 rotates in the second direction, the friction between the friction component 20 and the one-way transmission component 10 can stop the rotation of the motor shaft 41, avoiding the wear and failure of the motor shaft 41 caused by the prior art. It can also prevent the current from increasing and improve the service life of the motor.

[0034] It should be noted that the friction element 20 is fixedly installed on the outside of the one-way transmission element 10 and frictionally engages with the outer wall of the one-way transmission element 10, meaning that the friction element 20 always remains stationary.

[0035] The rotation of the motor shaft 41 around the second direction refers to the friction engagement between the outer wall of the one-way transmission component 10 and the friction component 20 when the motor shaft 41 has a tendency to reverse.

[0036] Specifically, in this embodiment, the one-way transmission component 10 can be a one-way bearing.

[0037] like Figures 1 to 3As shown, according to the one-way braking device for a motor provided in this embodiment, the friction member 20 includes a brake ring 21, which is sleeved on the outer periphery of the one-way transmission member 10. The brake ring 21 engages with the motor end cover 42 to prevent rotation. With this structure, by providing the brake ring 21, which is sleeved on the outer periphery of the one-way transmission member 10, the brake ring 21 can engage with the motor end cover 42 to prevent rotation. This ensures that the brake ring 21 and the end cover 42 are relatively stationary. Therefore, when the one-way transmission member 10 rotates with the motor shaft 41 in the second direction, the one-way transmission member 10 can engage with the brake ring 21 through friction, ensuring that the brake ring 21 can prevent the motor shaft 41 from rotating. Specifically, the one-way transmission member 10 drives the brake ring 21 to rotate. Due to the anti-rotation engagement between the brake ring 21 and the motor end cover 42, the rotation of the brake ring 21 is restricted, thereby generating greater friction and effectively preventing the motor shaft 41 from rotating in the second direction. This design not only improves the reliability of the brakes, but also optimizes the structure of the friction component 20, making it easier to assemble and maintain.

[0038] like Figure 2 and Figure 3 As shown, an anti-rotation mechanism 30 is provided between the brake ring 21 and the end cap 42. The anti-rotation mechanism 30 includes a groove 31 and a protrusion 32. The protrusion 32 is disposed on one of the inner wall of the end cap 42 facing the brake ring 21 and the outer wall of the brake ring 21. The groove 31 is disposed on the other of the inner wall of the end cap 42 facing the brake ring 21 and the outer wall of the brake ring 21. The protrusion 32 extends into the groove 31. With the above structure, by providing an anti-rotation mechanism 30 between the brake ring 21 and the end cap 42, and by disposing the protrusion 32 on one of the inner wall of the end cap 42 facing the brake ring 21 and the outer wall of the brake ring 21, and the groove 31 on the other of the inner wall of the end cap 42 facing the brake ring 21 and the outer wall of the brake ring 21, the protrusion 32 and the groove 31 engage in an anti-rotation engagement, restricting relative rotation between the brake ring 21 and the end cap 42, thereby enhancing the anti-rotation effect on the brake ring 21. When the motor shaft 41 rotates in the second direction, the one-way transmission component 10 drives the brake ring 21 to rotate. The protrusion 32 on the brake ring 21 and the groove 31 on the end cover 42 form a locking structure, which increases the frictional resistance and effectively prevents the motor shaft 41 from rotating in the second direction. This design not only improves the efficiency and reliability of braking, but also simplifies the assembly between the brake ring 21 and the end cover 42, and reduces production costs.

[0039] like Figure 2 and Figure 3As shown, protrusions 32 are provided on the inner wall of the end cap 42, and grooves 31 are provided on the outer wall of the brake ring 21. The brake ring 21 has multiple grooves 31, which are spaced apart along the circumferential direction of the brake ring 21. Multiple protrusions 32 are provided on the end cap 42 corresponding to the positions of the multiple grooves 31. By providing multiple grooves 31 on the outer wall of the brake ring 21, which cooperate with the multiple protrusions 32 on the end cap 42, this multi-point contact anti-rotation mechanism 30 design can more evenly distribute frictional force, reduce frictional heat at a single contact point, improve the heat dissipation performance of the brake ring 21, and thus extend the service life of the brake ring 21.

[0040] like Figure 4 and Figure 5 As shown, according to the motor one-way braking device provided in this embodiment, the difference between embodiment two and embodiment one is that the friction element 20, which is a friction ring 22, can fit against the end face of the one-way transmission element 10. Specifically, a mounting cylinder 43 is provided on the inner wall of the motor end cover 42 facing the friction element 20. The one-way transmission element 10 is disposed in the mounting cylinder 43, and the friction element 20 includes a friction ring 22, which fits against the end face of the one-way transmission element 10. With the above structure, the design of the mounting cylinder 43 not only provides a stable installation environment for the one-way transmission element 10, but also optimizes the contact method between the friction element 20 and the one-way transmission element 10, ensuring a uniform distribution of friction force and improving braking efficiency and stability. The fit between the friction ring 22 and the end face of the one-way transmission element 10 allows the friction force to act directly on the one-way transmission element 10, reducing energy loss during transmission. At the same time, this design also facilitates the replacement and maintenance of the friction element 20, improving the maintainability of the equipment.

[0041] like Figure 4 and Figure 5 As shown, the one-way braking device for the motor also includes an elastic support member 44, which is disposed between the friction member 20 and the end cover 42. With this structure, the elastic support member 44 utilizes its elastic properties to provide stable support and preload for the friction member 20, ensuring contact pressure between the friction member 20 and the one-way transmission member 10, thereby improving the braking effect. Simultaneously, the elastic support member 44 can also absorb vibrations generated during motor operation, reducing wear between the friction member 20 and the end cover 42, and extending the service life of the equipment.

[0042] like Figure 4 and Figure 5As shown, the elastic support 44 includes an elastic pad 441. A protrusion 442 is provided in the middle of the elastic pad 441 facing the end cover 42, and the protrusion 442 abuts against the inner wall of the end cover 42. The outer periphery of the elastic pad 441 abuts against the friction ring 22. With this structure, the design principle of the elastic pad 441 is to utilize its elastic deformation to provide preload to the friction ring 22, ensuring close contact between the friction ring 22 and the end face of the one-way transmission component 10, thereby improving the braking effect. When the friction ring 22 wears down due to prolonged friction with the end face of the one-way transmission component 10, the elastic force of the elastic pad allows the friction ring 22 to remain in close contact with the end face of the one-way transmission component 10, ensuring that the friction ring 22 can effectively stop the rotation of the one-way transmission component 10. Simultaneously, the elastic pad 441 can also absorb vibrations generated during motor operation, reducing wear between the friction ring 22 and the end cover 42, and extending the service life of the equipment.

[0043] like Figure 5 and Figure 6 As shown, according to the motor one-way braking device provided in Embodiment 3, the difference between Embodiment 3 and Embodiment 1 is that a rotating bearing is provided between the one-way transmission member 10 and the end cover 42. Specifically, a mounting cylinder 43 is provided on the inner wall of the end cover 42 facing the brake ring 21, and a rotating bearing is provided between the one-way transmission member 10 and the mounting cylinder 43. The outer wall of the motor shaft 41 is interference-fitted with the inner ring of the rotating bearing, and the outer ring of the rotating bearing is interference-fitted with the inner wall of the mounting cylinder 43. With the above structure, the rotating bearing is set inside the mounting cylinder 43 and sleeved on the motor shaft 41, which can ensure the stable installation of the one-way transmission member 10 on the motor shaft 41, while reducing the friction between the motor shaft 41 and the one-way transmission member 10 and improving the transmission efficiency.

[0044] In this embodiment, an annular washer is provided between the one-way transmission component 10 and the rotating bearing, and the annular washer is sleeved on the motor shaft 41. The annular washer further optimizes the contact method between the one-way transmission component 10 and the motor shaft 41, ensuring stability during transmission. At the same time, the annular washer can also absorb the vibration generated during motor operation, reduce wear between the one-way transmission component 10 and the motor shaft 41, and extend the service life of the equipment.

[0045] like Figure 8As shown, according to the motor one-way braking device provided in Embodiment 4, the difference between Embodiment 4 and Embodiment 1 is that the one-way transmission component 10 is mounted on the housing 45 of the driver. Specifically, the rotation of the motor shaft 41 is driven by the driver. The friction component 20 includes a brake ring 21, which is sleeved on the outer circumference of the one-way transmission component 10. The brake ring 21 is positioned between the one-way transmission component 10 and the housing 45 of the driver, and the brake ring 21 engages with the housing 45 of the driver to prevent rotation. With the above structure, the anti-rotation engagement design between the brake ring 21 and the housing 45 of the driver allows the housing 45 of the driver to be used directly as the anti-rotation support for the brake ring 21, simplifying the structure of the braking device and reducing production costs. Simultaneously, this design also improves braking efficiency and reliability, ensuring that the motor can quickly lock when stopped, preventing the load from slipping under gravity.

[0046] In this embodiment, the brake ring 21 is provided with multiple clearance grooves, and the inner wall of the driver housing 45 facing the brake ring 21 is provided with multiple snap-fit ​​protrusions, with each snap-fit ​​protrusion corresponding to one of the clearance grooves. This structure, with its coordinated design of clearance grooves and snap-fit ​​protrusions, not only simplifies the assembly between the brake ring 21 and the driver housing 45 but also improves the anti-rotation effect of the brake ring 21. When the motor shaft rotates in the second direction, the clearance grooves on the brake ring 21 and the snap-fit ​​protrusions on the driver housing 45 form a locking structure, increasing frictional resistance and effectively preventing the reverse rotation of the motor shaft 41.

[0047] Another embodiment of this utility model provides a motor assembly, including a motor 51 and a one-way braking device 52 disposed within the motor 51. The one-way braking device is the same as the one provided above. Using the above structure, the one-way braking device 52 can prevent the motor shaft 41 of the motor 51 from rotating in the opposite direction.

[0048] Another embodiment of this utility model provides a driving device, including a driver and a motor assembly 50, wherein the motor assembly 50 is the motor assembly provided above. Using the above structure, the driver can drive the motor shaft 41 of the motor assembly 50 to rotate, and can also prevent the motor shaft 41 from rotating in the opposite direction.

[0049] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0050] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0051] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" 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 this utility model and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0052] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0053] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0054] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A one-way braking device for an electric motor, used to cooperate with the motor shaft (41) of an electric motor, characterized in that, The one-way braking device for the motor includes: One-way transmission component (10), the one-way transmission component (10) is sleeved on the motor shaft (41), and the inner wall of the one-way transmission component (10) is in contact with the outer wall of the motor shaft (41); Friction element (20), the friction element (20) is disposed on the outside of the one-way transmission element (10) and frictionally engages with the outer wall of the one-way transmission element (10). When the motor shaft (41) rotates around the first direction, the outer wall of the one-way transmission member (10) remains stationary. When the motor shaft (41) rotates around the second direction, the friction member (20) stops the rotation of the motor shaft (41) by frictional engagement with the outer wall of the one-way transmission member (10).

2. The one-way braking device for a motor according to claim 1, characterized in that, The friction element (20) includes a brake ring (21), which is sleeved on the outer periphery of the one-way transmission element (10) and is anti-rotationally engaged with the end cover (42) of the motor.

3. The one-way braking device for a motor according to claim 2, characterized in that, An anti-rotation mechanism (30) is provided between the brake ring (21) and the end cap (42). The anti-rotation mechanism (30) includes a groove (31) and a protrusion (32). The protrusion (32) is provided on one of the inner wall of the end cap (42) facing the brake ring (21) and the outer wall of the brake ring (21). The groove (31) is provided on the other of the inner wall of the end cap (42) facing the brake ring (21) and the outer wall of the brake ring (21). The protrusion (32) extends into the groove (31).

4. The one-way braking device for a motor according to claim 3, characterized in that, The protrusion (32) is disposed on the inner wall of the end cap (42), the groove (31) is disposed on the outer wall of the brake ring (21), the brake ring (21) has a plurality of grooves (31), the plurality of grooves (31) are spaced apart along the circumferential direction of the brake ring (21), and the end cap (42) is provided with a plurality of protrusions (32) corresponding to the positions of the plurality of grooves (31).

5. The one-way braking device for a motor according to claim 1, characterized in that, An mounting cylinder (43) is provided on the inner wall of the motor end cover (42) facing the friction member (20). The one-way transmission member (10) is disposed in the mounting cylinder (43). The friction member (20) includes a friction ring (22), which is in contact with the end face of the one-way transmission member (10).

6. The one-way braking device for a motor according to claim 5, characterized in that, The motor one-way braking device also includes an elastic support member (44), which is disposed between the friction member (20) and the end cap (42); The elastic support (44) includes an elastic pad (441), and a protrusion (442) is provided in the middle of the elastic pad (441) in the direction of the end cap (42). The protrusion (442) abuts against the inner wall of the end cap (42), and the outer periphery of the elastic pad (441) abuts against the friction ring (22).

7. The one-way braking device for a motor according to claim 2, characterized in that, An mounting cylinder (43) is provided on the inner wall of the end cap (42) facing the brake ring (21). A rotating bearing is provided between the one-way transmission component (10) and the mounting cylinder (43). The outer wall of the motor shaft (41) is interference-fitted with the inner ring of the rotating bearing, and the outer ring of the rotating bearing is interference-fitted with the inner wall of the mounting cylinder (43). An annular washer is provided between the one-way transmission component (10) and the rotating bearing, and the annular washer is sleeved on the motor shaft (41).

8. The one-way braking device for a motor according to claim 1, characterized in that, The rotation of the motor shaft (41) of the motor is driven by the driver. The friction element (20) includes a brake ring (21). The brake ring (21) is sleeved on the outer periphery of the one-way transmission element (10). The brake ring (21) is disposed between the one-way transmission element (10) and the housing (45) of the driver. The brake ring (21) is anti-rotationally engaged with the housing (45) of the driver. The brake ring (21) is provided with a plurality of clearance grooves, and the inner sidewall of the drive housing (45) facing the brake ring (21) is provided with a plurality of snap-fit ​​protrusions, and the plurality of snap-fit ​​protrusions are provided in a one-to-one correspondence with the plurality of clearance grooves.

9. A motor assembly, characterized in that, It includes a motor (51) and a motor one-way braking device (52) disposed in the motor (51), wherein the motor one-way braking device is the motor one-way braking device according to any one of claims 1 to 8.

10. A driving device, characterized in that, It includes a driver and a motor assembly (50), the motor assembly (50) being the motor assembly of claim 9.

Images