Non-contact magnet brake device and motor

Abstract

The utility model provides a non-contact magnet brake device and a motor. The non-contact magnet brake device comprises a shell, and a containing space is formed in the shell. The magnetic ring assembly is located in the containing space, the magnetic ring assembly comprises a first magnetic ring and a second magnetic ring which are concentrically arranged, the first magnetic ring and the second magnetic ring are integrally formed, the first magnetic ring is located in the second magnetic ring, the second magnetic ring is connected with the shell, and the first magnetic ring and the second magnetic ring are integrally formed. The inner circumferential wall of the first magnetic ring is used for being connected with an output shaft of a motor and rotating along with the output shaft, so that the first magnetic ring and the second magnetic ring can rotate relatively. The brake device solves the problem that in the prior art, a brake device is high in assembly cost and production cost.

Description

Technical Field

[0001] The utility model relates to the technical field of drive systems, and in particular to a non-contact magnetic brake device and a motor. Background Art

[0002] Existing linear actuator brake mechanisms all use contact-type brakes, directly provided by friction elements. This results in significant interaction between the friction surfaces, which generates significant heat when sliding, easily leading to wear and failure. This also increases the actuator's current draw. To address this friction issue, magnetic brakes are often used. These utilize a system in which multiple permanent magnets are embedded in the plastic component connecting the rotor and stator, increasing rotational resistance to achieve braking.

[0003] Since the permanent magnets need to be embedded into the plastic parts one by one, the assembly process is cumbersome, production efficiency is limited, and the assembly cost and production cost of the brake device are increased. Utility Model Content

[0004] The main purpose of the utility model is to provide a non-contact magnetic brake device and a motor to solve the problem of high assembly cost and production cost of the brake device in the prior art.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a non-contact magnetic brake device is provided, including a shell, the interior of the shell has a accommodating space; a magnetic ring assembly, the magnetic ring assembly is located in the accommodating space, the magnetic ring assembly includes a first magnetic ring and a second magnetic ring arranged concentrically, the first magnetic ring and the second magnetic ring are both integrally formed, the first magnetic ring is located inside the second magnetic ring, the second magnetic ring is connected to the shell, the inner circumferential wall of the first magnetic ring is used to connect to the output shaft of the motor and rotate with the output shaft, so that the first magnetic ring and the second magnetic ring can rotate relative to each other.

[0006] Furthermore, a gap is formed between the first magnetic ring and the second magnetic ring.

[0007] Furthermore, the number of magnetic poles of the first magnetic ring is the same as the number of magnetic poles of the second magnetic ring; and / or the number of pole pairs of the first magnetic ring is the same as the number of pole pairs of the second magnetic ring, and the number of pole pairs is one group or multiple groups.

[0008] Furthermore, when the number of pole pairs is multiple groups, multiple positive and negative magnetic poles are arranged alternately along the circumferential direction of the first magnetic ring and / or the second magnetic ring; and / or on the first magnetic ring, the size of each of the multiple positive and negative magnetic poles is the same; and / or on the second magnetic ring, the size of each of the multiple positive and negative magnetic poles is the same.

[0009] Furthermore, the outer peripheral wall of the second magnetic ring is fixedly connected to the inner wall of the housing; and / or the inner peripheral wall of the first magnetic ring has a rotation-stopping surface for cooperating with the output shaft.

[0010] Furthermore, the inner wall of the shell has a first limiting structure for limiting the rotation of the second magnetic ring, and the second magnetic ring has a second limiting structure that cooperates with the first limiting structure.

[0011] Furthermore, one of the first limiting structure and the second limiting structure is a protrusion, and the other one of the first limiting structure and the second limiting structure is a groove for the protrusion to be embedded in.

[0012] Furthermore, the groove extends along the axial direction of the second magnetic ring; and / or the first limiting structure and the second limiting structure are multiple in number and are arranged at intervals along the circumferential direction of the second magnetic ring.

[0013] Furthermore, the first magnetic ring and the second magnetic ring are both made of plastic magnetic material; and / or the axial height of the first magnetic ring is the same as the axial height of the second magnetic ring; and / or the radial thickness of the first magnetic ring is less than the radial thickness of the second magnetic ring; and / or the outer shell includes an end wall, a side wall and a connecting flange, the side wall is continuously arranged around the outer peripheral side of the end wall, the connecting flange is arranged at the end of the side wall away from the end wall, and a fixing area is provided on the connecting flange, and the side surface of the connecting flange facing away from the end wall is a connecting surface for fitting with the end face of the motor.

[0014] Furthermore, the non-contact magnetic brake device further includes a limiting sleeve, which is arranged in the housing and abuts between the motor and the second magnetic ring in the axial direction of the second magnetic ring.

[0015] According to another aspect of the present invention, a motor is provided, comprising a casing; a motor body, the motor body having an output shaft, both ends of the output shaft extending to the outside of the casing; a non-contact magnetic brake device, the non-contact magnetic brake device being installed at one end of the casing, and one end of the output shaft extending into the outer shell of the non-contact magnetic brake device and being driven and connected to the first magnetic ring of the non-contact magnetic brake device.

[0016] Furthermore, the outer shell is detachably connected to the casing.

[0017] Furthermore, the casing has a raised portion that bulges toward the inside of the outer shell, the raised portion has a necked structure and surrounds the outer peripheral side of the output shaft, the motor also includes an oil-containing bearing, the oil-containing bearing is sleeved on the output shaft and located in the necked structure, and at least part of the surface of the necked structure is adapted to the shape of the outer peripheral surface of the oil-containing bearing.

[0018] By applying the technical solution of the utility model, a plurality of embedded magnets are replaced by an integrally formed first magnetic ring and a second magnetic ring, which has high integrity and simple assembly, can improve production efficiency and reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1 The figure shows the overall structure of a non-contact magnetic brake device in one embodiment of the present application;

[0021] Figure 2 Shown Figure 1 A top view of

[0022] Figure 3 The figure shows the overall structure of the motor in one embodiment of the present application;

[0023] Figure 4 Shown Figure 3 Schematic diagram of the internal structure of the motor;

[0024] Figure 5 Shown Figure 4 A magnified view of point A;

[0025] Figure 6 Shown Figure 4 Schematic diagram of the coordination between the spherical structure and the output shaft.

[0026] The above drawings include the following reference numerals:

[0027] 10. Outer casing; 11. First limiting structure; 111. Inclined surface; 12. Limiting sleeve; 13. End wall; 14. Side wall; 15. Connecting flange; 20. Magnetic ring assembly; 21. First magnetic ring; 211. Anti-rotation surface; 22. Second magnetic ring; 23. Second limiting structure; 30. Casing; 31. Raised portion; 40. Motor body; 41. Output shaft; 50. Spherical structure. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0029] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0030] In the present invention, unless otherwise specified, directional words such as "up, down, top, bottom" are usually used with reference to the directions shown in the drawings, or with reference to the components themselves in the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above directional words are not used to limit the present invention.

[0031] In order to solve the problem of high assembly cost and production cost of brake devices in the prior art, the utility model provides a non-contact magnetic brake device and a motor.

[0032] See also Figure 1 and Figure 2 A non-contact magnetic brake device includes a shell 10 and a magnetic ring assembly 20. The shell 10 has an accommodating space inside, and the magnetic ring assembly 20 is located in the accommodating space. The magnetic ring assembly 20 includes a first magnetic ring 21 and a second magnetic ring 22 arranged concentrically. The first magnetic ring 21 and the second magnetic ring 22 are both integrally formed. The first magnetic ring 21 is located inside the second magnetic ring 22, and the second magnetic ring 22 is connected to the shell 10. The inner circumferential wall of the first magnetic ring 21 is used to connect to the output shaft 41 of the motor and rotate with the output shaft 41, so that the first magnetic ring 21 and the second magnetic ring 22 can rotate relative to each other.

[0033] The first magnetic ring 21 and the second magnetic ring 22 are each integrally formed. During installation, the magnetic ring assembly 20 can be installed by simply placing the first magnetic ring 21 and the second magnetic ring 22 within the mounting space of the housing 10. The concentrically arranged first magnetic ring 21 is located within the second magnetic ring 22. The first magnetic ring 21 rotates with the motor's output shaft 41. The second magnetic ring 22 is mounted on the housing 10. Driven by the motor's output shaft 41, the first magnetic ring 21 and the second magnetic ring 22 can rotate relative to each other. When the motor rotates, the output shaft 41 drives the first magnetic ring 21 to rotate. When the driving force is removed, the first magnetic ring 21 has rotational inertia. At this time, the second magnetic ring 22 reduces the rotational speed of the first magnetic ring 21 through the mutual attraction and repulsion between the positive and negative poles of the second magnetic ring 22 and the first magnetic ring 21. Eventually, the two magnetic rings reach equilibrium, and the first magnetic ring 21 and the output shaft 41 stop rotating, thus braking the motor.

[0034] Compared with the solutions in the prior art, the integrally formed first magnetic ring 21 and second magnetic ring 22 replace multiple embedded magnets, which has high integrity and simple assembly, can improve production efficiency and reduce production costs.

[0035] In order to facilitate the installation of the magnetic ring assembly 2, the magnetic ring assembly 2 is generally a permanent magnet and has magnetism itself. However, according to the actual installation environment, the magnetic ring assembly 2 can also use an electromagnet to generate magnetic force.

[0036] In the present application, the first magnetic ring 21 and the second magnetic ring 22 are both made of plastic magnetic material.

[0037] Plastic magnets are manufactured through injection molding technology. Various resins, such as nylon, polyphenylene sulfide, and elastic plastics, are used as base materials. These resins are mixed with ferrite magnetic powder or NdFeB magnetic powder and then molded using injection molding technology. The first and second magnetic rings 21, 22 produced through this process can be integrally molded, facilitating the processing and manufacturing of the first and second magnetic rings 21, 22.

[0038] like Figure 2 As shown, a gap is formed between the first magnetic ring 21 and the second magnetic ring 22 .

[0039] The gap prevents direct contact between the first magnetic ring 21 and the second magnetic ring 22. This prevents wear and tear between the first magnetic ring 21 and the second magnetic ring 22 due to relative rotation when the first magnetic ring 21 rotates, extending their service life and reducing the frequency of replacement, thus optimizing the user experience. Because there is no contact, the first magnetic ring 21 and the second magnetic ring 22 experience virtually no wear or heat.

[0040] It is the best implementation solution to have a gap between the first magnetic ring 21 and the second magnetic ring 22. Of course, no gap may be provided between the first magnetic ring 21 and the second magnetic ring 22.

[0041] In this embodiment, the number of magnetic poles of the first magnetic ring 21 is the same as the number of magnetic poles of the second magnetic ring 22 , the number of pole pairs of the first magnetic ring 21 is the same as the number of pole pairs of the second magnetic ring 22 , and the number of pole pairs is one or more groups.

[0042] The first magnetic ring 21 and the second magnetic ring 22 reduce the rotational speed of the first magnetic ring 21 by the constant attraction and repulsion between the positive and negative poles of the first magnetic ring 21. The number of magnetic poles in the first magnetic ring 21 and the number of magnetic poles in the second magnetic ring 22 are the same. This ensures that the magnetic poles on the first magnetic ring 21 correspond one-to-one with the magnetic poles on the second magnetic ring 22 when they are engaged, avoiding misalignment and ensuring the braking effect of the magnetic ring assembly 20.

[0043] The number of magnetic poles of the first magnetic ring 21 is the same as the number of magnetic pole pairs of the second magnetic ring 22. When the first magnetic ring 21 rotates, the magnetic poles on the first magnetic ring 21 can alternate with the magnetic poles on the second magnetic ring 22, thereby generating a continuous mutual attraction and mutual repulsion effect, thereby achieving a reduction in the rotation speed of the first magnetic ring 21.

[0044] In one embodiment, when the number of pole pairs is multiple groups, multiple positive and negative magnetic poles are alternately arranged along the circumferential direction of the first magnetic ring 21 and / or the second magnetic ring 22; on the first magnetic ring 21, the size of each of the multiple positive and negative magnetic poles is the same; on the second magnetic ring 22, the size of each of the multiple positive and negative magnetic poles is the same.

[0045] Because the first magnetic ring 21 and the second magnetic ring 22 have the same number of magnetic pole pairs, and each of the multiple positive and negative magnetic poles of the first magnetic ring 21 and the second magnetic ring 22 has the same size, the arc of each individual magnetic pole is the same, and the magnetic poles divide the magnetic rings equally. When the magnetic poles of the first magnetic ring 21 and the magnetic rings of the second magnetic ring correspond to each other, each magnetic pole on the first magnetic ring 21 will perfectly correspond to its corresponding magnetic pole on the second magnetic ring 22, and there will be no situation where one magnetic pole on one magnetic ring corresponds to two magnetic poles on the other magnetic ring. This improves the working efficiency of the magnetic ring assembly 20 and further ensures the braking effect of the magnetic ring assembly 20.

[0046] In this embodiment, the axial height of the first magnetic ring 21 is the same as the axial height of the second magnetic ring 22 .

[0047] In this embodiment, the radial thickness of the first magnetic ring 21 is smaller than the radial thickness of the second magnetic ring 22 .

[0048] If the first magnetic ring 21 and the second magnetic ring 22 are of different heights, the part of the two magnetic rings with different heights cannot be matched, which will cause magnetic waste in this part, thereby increasing production costs. Therefore, the first magnetic ring 21 and the second magnetic ring 22 are set to the same height to avoid magnetic waste.

[0049] In this embodiment, the outer peripheral wall of the second magnetic ring 22 is fixedly connected to the inner wall of the housing 10 .

[0050] The second magnetic ring 22 can be connected by bonding, snapping, or by using a stopper to positionally secure the second magnetic ring 22, preventing relative rotation between the second magnetic ring 22 and the inner wall of the housing 10. When the first magnetic ring 21 rotates under the drive of the motor, the housing 10 is fixed, and there is no relative rotation between the second magnetic ring 22 and the housing 10. Therefore, relative rotation occurs between the first magnetic ring 21 and the second magnetic ring 22, thereby braking the motor. By fixedly connecting the outer circumferential wall of the second magnetic ring 22 to the inner wall of the housing 10, the stability of the relative rotation between the first magnetic ring 21 and the second magnetic ring 22 can be increased.

[0051] Furthermore, a rotation-stopping surface 211 for cooperating with the output shaft 41 is provided on the inner peripheral wall of the first magnetic ring 21 .

[0052] The connection between the first magnetic ring 21 and the motor's output shaft 41 is a connection between a shaft and a hole. Without the anti-rotation surface 211, the output shaft 41 may idle while the first magnetic ring 21 does not rotate. By providing the anti-rotation surface 211, the cross-section of the inner circumference of the first magnetic ring 21 is made D-shaped. Similarly, the cross-section of the end of the motor output shaft 41 inserted into the first magnetic ring 21 also presents a D-shape that matches the inner circumference of the first magnetic ring 21. In this way, when the first magnetic ring 21 is matched with the motor's output shaft 41, the motor's output shaft 41 can stably drive the first magnetic ring 21 to rotate, increasing the stability of the first magnetic ring 21's rotation.

[0053] Of course, the inner circumferential wall of the first magnetic ring 21 is not limited to the D-shape, and may also be any non-circular shape as long as the output shaft 41 and the first magnetic ring 21 cannot rotate relative to each other.

[0054] like Figure 1 and Figure 2 As shown, the inner wall of the housing 10 has a first limiting structure 11 for limiting the rotation of the second magnetic ring 22 , and the second magnetic ring 22 has a second limiting structure 23 that cooperates with the first limiting structure 11 .

[0055] The cooperation between the first limiting structure 11 and the second limiting structure can limit the rotation of the second magnetic ring 22 in the housing 10. When the first magnetic ring 21 rotates, the second magnetic ring 22 can remain stable under the cooperation of the first limiting structure 11 and the second limiting structure 23, thereby increasing the stability of the relative rotation between the first magnetic ring 21 and the second magnetic ring 22.

[0056] In one embodiment, one of the first limiting structure 11 and the second limiting structure 23 is a protrusion, and the other one of the first limiting structure 11 and the second limiting structure 23 is a groove for the protrusion to be embedded in.

[0057] When the protrusion is embedded in the groove, the second magnetic ring 22 cannot rotate relative to the housing 10 due to the blocking effect of the protrusion, thereby limiting the position of the second magnetic ring 22.

[0058] To facilitate installation of the second magnetic ring 22, the top of the protrusion can be provided with an inclined surface 111. The inclined surface 111 reduces the cross-section of the top of the protrusion. When the second magnetic ring 22 is installed, the groove first engages with the inclined surface 111 at the top of the protrusion. Due to the small cross-sectional area of the inclined surface 111, it can easily enter the groove. By providing the inclined surface 111, the engagement of the protrusion and the groove is facilitated, thus facilitating installation of the second magnetic ring 22.

[0059] In one embodiment, the protrusion is fixed to the inner wall of the housing 10, and the groove is defined on the outer circumferential wall of the second magnetic ring 22. In another embodiment of the present application, the protrusion is fixed to the outer wall of the second magnetic ring 22, and the groove is defined on the inner wall of the housing 10. Both of the above embodiments can limit the position of the second magnetic ring 22. However, due to the thickness of the housing 10, the depth of the groove is limited when it is defined on the housing 10. Therefore, the best embodiment is to fix the protrusion to the inner wall of the housing 10 and define the groove on the outer circumferential wall of the second magnetic ring 22.

[0060] In this embodiment, the groove extends along the axial direction of the second magnetic ring 22 .

[0061] The protrusion is in the groove and can only move along the extension direction of the groove. By adopting the above technical solution, the second magnetic ring 22 can only move along the axial direction of the second magnetic ring 22 relative to the shell, and the axial direction is perpendicular to the circumferential direction, which can better limit the rotation of the second magnetic ring 22 in the circumferential direction and increase the stability of the placement of the second magnetic ring 22.

[0062] In this embodiment, there are multiple first limiting structures 11 and second limiting structures 23 , which are arranged at intervals along the circumferential direction of the second magnetic ring 22 .

[0063] By adopting the above technical solution, multiple first limiting structures 11 and second limiting structures 23 that cooperate with each other limit the rotation of the second magnetic ring 22, thereby improving the limiting effect of the second magnetic ring 22 and further increasing the stability of the placement of the second magnetic ring 22.

[0064] In the present application, the non-contact magnetic brake device further includes a limiting sleeve 12 , which is disposed in the housing 10 and abuts between the motor and the second magnetic ring 22 in the axial direction of the second magnetic ring 22 .

[0065] One end of the limiting sleeve 12 located in the housing 10 abuts against the outer wall of the motor, and the other end abuts against the second magnetic ring 22. When the housing 10 is installed on the end of the motor, the limiting sleeve 12 abuts against the end of the motor. At this time, the limiting sleeve 12 can limit the displacement of the second magnetic ring 22 in its axial direction, so that the second magnetic ring 22 can be stably placed in the housing 10, avoiding the second magnetic ring 22 from moving in the housing 10, and increasing the stability of the cooperation between the first magnetic ring 21 and the second magnetic ring 22. Ensure the braking effect of the magnetic ring assembly 20.

[0066] like Figure 1 、 Figure 2 、 Figure 4 and Figure 5As shown, the housing 10 includes an end wall 13, a side wall 14 and a connecting flange 15. The side wall 14 is continuously arranged around the outer peripheral side of the end wall 13. The connecting flange 15 is arranged at the end of the side wall 14 away from the end wall 13, and a fixing area is provided on the connecting flange 15. The side surface of the connecting flange 15 facing away from the end wall 13 is a connecting surface for fitting with the end face of the motor.

[0067] The space formed between the end wall 13 and the side wall 14 is a storage space. During the placement of the magnetic ring assembly 20 into the housing 10, the first magnetic ring 21 and the second magnetic ring 22 are placed onto the end wall 13, and the magnetic ring assembly 20 is supported by the end wall 13. During the installation of the brake device and the motor, the connecting flange 15 is aligned with the end face of the motor and connected to the end of the motor through the fixing area. To facilitate the connection between the housing 10 and the motor and increase the stability of the connection, a mounting hole can be opened in the fixing area of the continuous flange, and the housing 10 can be mounted to the end of the motor using connectors such as bolts or pins.

[0068] In this application, the torque generated by the two magnetic rings is between 0.03-0.1n / m, and can be adaptively changed according to actual usage requirements.

[0069] See also Figures 3 to 6 A motor includes a housing 30, a motor body 40 and the non-contact magnetic brake device of Example 1. The motor body 40 has an output shaft 41, both ends of the output shaft 41 extend to the outside of the housing 30, the non-contact magnetic brake device is installed at one end of the housing 30, and one end of the output shaft 41 extends into the outer shell 10 of the non-contact magnetic brake device and is drivingly connected to the first magnetic ring 21 of the non-contact magnetic brake device.

[0070] The non-contact magnetic brake device's housing 10 is mounted at one end of the motor. The motor's output shaft 41 extends from the housing 30 and into the interior of the housing 10, engaging and rotating the first magnetic ring 21 within the housing 10. When the motor's driving force is removed, the motor's output shaft 41, due to inertia, continues to rotate the first magnetic ring 21. At this time, the second magnetic ring 22, through the positive and negative poles separating it from the first magnetic ring 21, continuously attracts and repel each other, slowing the rotation of the first magnetic ring 21 and the motor's output shaft 41. Eventually, the two magnetic rings reach equilibrium, effectively braking the motor.

[0071] like Figure 4 As shown, the housing 10 is detachably connected to the casing 30 .

[0072] To facilitate the detachable connection between the housing 10 and the casing 30, the casing 30 and the housing 10 are generally connected by bolts. The housing 10 is installed by providing a flange at one end of the housing 10 near the casing 30, and providing a connection hole in the flange for the bolt to pass through. By making the housing 10 detachable, the decision of whether to install the non-contact magnetic brake device of Example 1 can be made based on actual usage requirements. When individual components within the non-contact magnetic brake device need to be replaced, the replaceable housing 10 facilitates replacement of the components within the housing 10.

[0073] Because one end of the motor needs to connect to other external components to generate power, to facilitate the detachable connection between the housing 30 and the outer shell 10, the outer shell 10 is generally mounted on the end of the motor away from the external power generation end. Since the end of the motor that generates power is the front end, the outer shell 10 is mounted on the rear end cover of the motor.

[0074] See also Figure 5 and Figure 6 The housing 30 has a raised portion 31 that bulges toward the inside of the outer shell 10. The raised portion 31 has a necked structure and surrounds the outer periphery of the output shaft 41. The motor also includes a spherical structure 50. The spherical structure 50 is sleeved on the output shaft 41 and is located in the necked structure, and at least part of the surface of the necked structure is adapted to the shape of the outer periphery of the spherical structure 50.

[0075] The raised portion 31 is used to place the spherical structure 50 , which is generally an oil-containing bearing that supports and limits the output shaft 41 , reduces friction and wear of the output shaft 41 during rotation, increases the stability of the output shaft 41 during rotation, and improves the service life of the output shaft 41 .

[0076] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0077] 1. The integrated first magnetic ring 21 and the second magnetic ring 22 are used to replace multiple embedded magnets, which have high integrity and simple assembly, can improve production efficiency and reduce production costs.

[0078] 2. The gap avoids direct contact between the first magnetic ring 21 and the second magnetic ring 22. In this way, when the first magnetic ring 21 rotates, it can avoid wear on the second magnetic ring 22 due to the relative rotation between the two, thereby increasing the service life of the first magnetic ring 21 and the second magnetic ring 22, reducing the replacement frequency of the first magnetic ring 21 and the second magnetic ring 22, and optimizing the user experience.

[0079] 3. By making the shell 10 detachable, it is possible to decide whether to install the non-contact magnetic brake device in Example 1 according to actual usage requirements, and when individual components in the non-contact magnetic brake device need to be replaced, the replaceable shell 10 can facilitate the replacement of the parts inside the shell 10.

[0080] Obviously, the embodiments described above are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0081] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, tasks, devices, components and / or combinations thereof.

[0082] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0083] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements 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 non-contact magnetic brake device, characterized in that: include: A housing (10), wherein the interior of the housing (10) has a receiving space; A magnetic ring assembly (20), wherein the magnetic ring assembly (20) is located in the accommodating space, and the magnetic ring assembly (20) includes a first magnetic ring (21) and a second magnetic ring (22) that are concentrically arranged, wherein the first magnetic ring (21) and the second magnetic ring (22) are both integrally formed, wherein the first magnetic ring (21) is located inside the second magnetic ring (22), and the second magnetic ring (22) is connected to the housing (10), and the inner peripheral wall of the first magnetic ring (21) is used to be connected to the output shaft (41) of the motor and rotate with the output shaft (41), so that the first magnetic ring (21) and the second magnetic ring (22) can rotate relative to each other.

2. The non-contact magnetic brake device according to claim 1, characterized in that: A gap is formed between the first magnetic ring (21) and the second magnetic ring (22).

3. The non-contact magnetic brake device according to claim 1, characterized in that: The number of magnetic poles of the first magnetic ring (21) is the same as the number of magnetic poles of the second magnetic ring (22); and / or The number of pole pairs of the first magnetic ring (21) and the number of pole pairs of the second magnetic ring (22) are the same, and the number of pole pairs is one group or multiple groups.

4. The non-contact magnetic brake device according to claim 3, characterized in that: When the number of pole pairs is multiple groups, Along the circumferential direction of the first magnetic ring (21) and / or the second magnetic ring (22), a plurality of positive and negative magnetic poles are alternately arranged; and / or On the first magnetic ring (21), each of the plurality of positive and negative magnetic poles has the same size; and / or On the second magnetic ring (22), each of the plurality of positive and negative magnetic poles has the same size.

5. The non-contact magnetic brake device according to any one of claims 1 to 4, characterized in that: The inner peripheral wall of the first magnetic ring (21) is provided with a rotation-stopping surface (211) for cooperating with the output shaft (41); and / or The inner wall of the housing (10) has a first limiting structure (11) for limiting the rotation of the second magnetic ring (22), and the second magnetic ring (22) has a second limiting structure (23) that cooperates with the first limiting structure (11).

6. The non-contact magnetic brake device according to claim 5, characterized in that: One of the first limiting structure (11) and the second limiting structure (23) is a groove, and the groove extends along the axial direction of the second magnetic ring (22); and / or The first limiting structures (11) and the second limiting structures (23) are multiple in number and are arranged at intervals along the circumferential direction of the second magnetic ring (22).

7. The non-contact magnetic brake device according to any one of claims 1 to 4, characterized in that: The first magnetic ring (21) and the second magnetic ring (22) are both made of plastic magnetic material; and / or The axial height of the first magnetic ring (21) and the axial height of the second magnetic ring (22) are the same; and / or The housing (10) comprises an end wall (13), a side wall (14) and a connecting flange (15), wherein the side wall (14) is continuously arranged around the outer peripheral side of the end wall (13), the connecting flange (15) is arranged at an end of the side wall (14) away from the end wall (13), and a fixing area is provided on the connecting flange (15), and a side surface of the connecting flange (15) facing away from the end wall (13) is a connecting surface for fitting with the end face of the motor.

8. The non-contact magnetic brake device according to any one of claims 1 to 4, characterized in that: The non-contact magnetic brake device further comprises a limiting sleeve (12), the limiting sleeve (12) being arranged in the housing (10), and the limiting sleeve (12) abutting between the motor and the second magnetic ring (22) in the axial direction of the second magnetic ring (22).

9. A motor, characterized in that: include: Housing (30); A motor body (40), the motor body (40) having an output shaft (41), both ends of the output shaft (41) extending to the outside of the housing (30); The non-contact magnetic brake device according to any one of claims 1 to 8, wherein the non-contact magnetic brake device is mounted on one end of the housing (30), and one end of the output shaft (41) extends into the housing (10) of the non-contact magnetic brake device and is drivingly connected to the first magnetic ring (21) of the non-contact magnetic brake device.

10. The motor according to claim 9, characterized in that The outer shell (10) is detachably connected to the housing (30).

11. The motor according to claim 9, wherein The housing (30) has a raised portion (31) raised toward the inside of the outer shell (10), the raised portion (31) is a constricted structure and surrounds the outer circumference of the output shaft (41), and the motor further includes a spherical structure (50), the spherical structure (50) is sleeved on the output shaft (41) and located within the constricted structure, and at least a portion of the surface of the constricted structure is adapted to the shape of the outer circumference of the spherical structure (50).

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