Annular hollow brushless motor structure and reel
By adopting an annular hollow brushless motor structure in the motor, the stator and rotor are arranged coaxially, and the electromagnetic coil and permanent magnet are distributed in the hollow ring structure, the problem of insufficient compactness in the existing motor structure is solved, and efficient in a narrow space is achieved Torque output and wide application.
Patent Information
- Application Number
- CN202420279563.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-05
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-02-05
AI Technical Summary
The existing motor structure is not compact enough to be suitable for small spaces, limiting its application range.
The annular hollow brushless motor structure is adopted, the stator and rotor are arranged coaxially, and the electromagnetic coil and permanent magnet are distributed in the hollow ring structure and are connected by bearings to form a compact motor design.
The maximum torque output in the smallest space is achieved, the motor structure is more compact, the scope of application is wider, and the torque loss is small.
Smart Images
Figure CN222301489U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of motors, in particular to a ring-shaped hollow brushless motor structure and a winding wheel. Background Art
[0002] A motor is a device that converts electrical energy into mechanical energy. It uses an energized coil (i.e., stator winding) to generate a rotating magnetic field and acts on a rotor (such as a squirrel-cage closed aluminum frame) to form a magneto-electrical rotation torque. The motor is mainly composed of a stator and a rotor. The direction of the force movement of the energized wire in the magnetic field is related to the direction of the current and the magnetic flux lines (magnetic field direction).
[0003] The existing motor structure generally includes a stator and a rotor, wherein the stator includes two end caps and a bearing fixed to each end cap, and the rotor includes a rotating shaft, the rotating shaft passes through the bearing, and the bearing rotatably supports the rotating shaft. This motor structure is generally set in a cylindrical shape, which is not compact enough and has a large volume, and cannot be applied to a small space. Utility Model Content
[0004] The purpose of the utility model is to provide a ring-shaped hollow brushless motor structure and a winding wheel to solve the technical problems of the motor structure being not compact enough and having limited application scope in the prior art. The preferred technical solution among the many technical solutions provided by the utility model can produce many technical effects as described below.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] The annular hollow brushless motor structure provided by the utility model comprises an annular stator and an annular rotor, wherein the stator and the rotor are coaxially arranged, and the stator and the rotor are rotatably connected to form a hollow annular structure;
[0007] An electromagnetic coil is arranged on a side of the stator facing the rotor, and a permanent magnet is arranged on a side of the rotor facing the stator.
[0008] As a further improvement of the present invention, a bearing is provided between the rotor and the stator, and the rotor and the stator are rotatably connected via the bearing.
[0009] As a further improvement of the present invention, the diameter of the stator is smaller than the diameter of the rotor, the stator is connected to the inner wall of the bearing, and the rotor is connected to the outer wall of the bearing.
[0010] As a further improvement of the utility model, the electromagnetic coil is arranged on the outer wall of the stator, and the electromagnetic coil is distributed in a ring array;
[0011] The permanent magnets are arranged on the inner wall of the rotor, and are distributed in a ring array.
[0012] As a further improvement of the present invention, the diameter of the rotor is smaller than the diameter of the stator, the stator is connected to the outer wall of the bearing, and the rotor is connected to the inner wall of the bearing.
[0013] As a further improvement of the utility model, the electromagnetic coil is arranged on the inner wall of the stator, and the electromagnetic coil is distributed in a ring array;
[0014] The permanent magnets are arranged on the outer wall of the rotor, and are distributed in a ring array.
[0015] As a further improvement of the present invention, the permanent magnet is a rare earth permanent magnet.
[0016] As a further improvement of the present invention, the bearing is a ball bearing, a roller bearing or an oil-containing bearing.
[0017] As a further improvement of the present invention, the bearing is a large-diameter bearing.
[0018] The beneficial effects of the utility model are as follows: the annular hollow brushless motor structure and winding wheel provided by the utility model, the annular stator and the annular rotor are coaxially arranged, and a hollow annular structure is formed between the two, by arranging an electromagnetic coil on the stator and arranging a permanent magnet on the rotor, the electromagnetic coil generates a rotating magnetic field to act on the rotor to form a magneto-electric power rotation torque, and the annular hollow brushless motor structure provided by the utility model is adopted, and the electromagnetic coil and the permanent magnet are arranged in the hollow annular structure formed by the stator and the rotor, so that the motor structure is more compact and has a wider range of applications. In addition, the annular hollow brushless motor structure provided by the utility model, the electromagnetic coil and the permanent magnet are arranged in the hollow annular structure, the torque loss is small, and the maximum torque can be achieved in the smallest space. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0020] Figure 1 It is a schematic diagram of the structure of the annular hollow brushless motor of the utility model;
[0021] Figure 2 It is a cross-sectional view of the structure of the annular hollow brushless motor of the utility model;
[0022] Figure 3 It is a partial enlarged structural schematic diagram of the annular hollow brushless motor structure of the utility model;
[0023] Figure 4 It is a three-dimensional diagram of the winding wheel of the utility model;
[0024] Figure 5 It is a front view of the winding wheel of the utility model;
[0025] Figure 6 It is a RR cross-sectional view of the winding wheel of the utility model;
[0026] Figure 7 It is a QQ sectional view of the utility model.
[0027] In the figure, 1 is the rotor; 2 is the stator; 3 is the permanent magnet; 4 is the electromagnetic coil; 5 is the bearing. DETAILED DESCRIPTION
[0028] Please refer to the attached figure below Figure 1 to Figure 7 And the text content understands the content of the utility model and the difference between the utility model and the prior art. The following is a further detailed description of the technical solution (including the preferred technical solution) of the utility model by means of the accompanying drawings and the enumeration of some optional embodiments of the utility model. It should be noted that: any technical feature and any technical solution in the present embodiment are one or more of a variety of optional technical features or optional technical solutions. In order to describe the need for brevity, it is impossible to exhaustively list all the alternative technical features and alternative technical solutions of the utility model in this document, and it is not convenient for the implementation of each technical feature to emphasize that it is one of the optional multiple implementations, so those skilled in the art should know that: any technical means provided by the utility model can be replaced or any two or more technical means or technical features provided by the utility model can be combined with each other to obtain a new technical solution. Any technical feature and any technical solution in this embodiment do not limit the scope of protection of the utility model. The scope of protection of the utility model should include any alternative technical solutions that can be thought of by those skilled in the art without creative labor and new technical solutions obtained by combining any two or more technical means or technical features provided by the utility model.
[0029] In the description of the present invention, it should be noted that, unless otherwise specified, "multiple" means two or more than two; the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings, and 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0030] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.
[0031] The utility model provides a ring-shaped hollow brushless motor structure and a winding wheel with compact structure and wider application range.
[0032] Combine the following Figure 1 to Figure 7 The technical solution provided by the utility model is described in more detail.
[0033] Embodiment 1:
[0034] The utility model provides a ring-shaped hollow brushless motor structure, such as Figure 1-3 As shown, it includes an annular rotor 1 and an annular stator 2, the rotor 1 and the stator 2 are coaxially arranged, and the rotor 1 and the stator 2 are rotatably connected through a bearing 5 to form a hollow annular structure;
[0035] A permanent magnet 3 is disposed on a side of the rotor 1 facing the stator 2 , and an electromagnetic coil 4 is disposed on a side of the stator 2 facing the rotor 1 .
[0036] The annular hollow brushless motor structure provided by the utility model has an annular rotor 1 and an annular stator 2 coaxially arranged, and a hollow annular structure is formed between the two. By arranging a permanent magnet 3 on the rotor 1 and an electromagnetic coil 4 on the stator 2, the electromagnetic coil 4 generates a rotating magnetic field to act on the rotor 1 to form a magneto-electric power rotation torque. The annular hollow brushless motor structure provided by the utility model is adopted, and the electromagnetic coil 4 and the permanent magnet 3 are arranged in the hollow annular structure formed by the rotor 1 and the stator 2, so that the motor structure is more compact and has a wider range of applications. In addition, the annular hollow brushless motor structure provided by the utility model, the electromagnetic coil 4 and the permanent magnet 3 are arranged in the hollow annular structure, the torque loss is small, and the maximum torque can be achieved in the smallest space.
[0037] It can be understood that a circuit board and a power supply are provided on the stator 2 to complete the rotation of the motor.
[0038] Specifically, the diameter of the stator 2 is smaller than the diameter of the rotor 1 , the rotor 1 is connected to the outer wall of the bearing 5 , and the stator 2 is connected to the inner wall of the bearing 5 .
[0039] The permanent magnets 3 are arranged on the inner wall of the rotor 1 , and the permanent magnets 3 are distributed in a ring array; the electromagnetic coils 4 are arranged on the outer wall of the stator 2 , and the electromagnetic coils 4 are distributed in a ring array.
[0040] Preferably, the bearing 5 is a ball bearing, a roller bearing or an oil-containing bearing, and the permanent magnet 3 is a rare earth permanent magnet.
[0041] A winding wheel comprises the annular hollow brushless motor structure as described above.
[0042] A winding wheel, such as Figure 4 As shown, it includes an inner wheel 6 and an outer wheel 7, wherein the inner wheel 6 is connected to the stator 2, and the outer wheel 7 is connected to the rotor 1. A hand wheel 8 is also arranged on the outer wheel 7, and a gripping portion 9 is arranged on the inner wheel 6.
[0043] The winding wheel provided by the utility model comprises an inner wheel 6 connected to the stator 2, an outer wheel 7 connected to the rotor 1, a permanent magnet 3 is arranged on the rotor 1, an electromagnetic coil 4 is arranged on the stator 2, and the electromagnetic coil 4 generates a rotating magnetic field to act on the rotor 1 to form a magneto-electrodynamic rotating torque, thereby realizing automatic rotation of the outer wheel 7.
[0044] It can be understood that the winding wheel provided by the utility model, such as Figure 5-7 As shown, it can also be arranged that the outer wheel 7 and the inner wheel 6 are coaxially arranged, and the outer wheel 7 and the inner wheel 6 are rotatably connected through the bearing 5 to form a hollow annular structure;
[0045] A permanent magnet 3 is disposed on a side of the outer wheel 7 facing the inner wheel 6 , and an electromagnetic coil 4 is disposed on a side of the inner wheel 6 facing the outer wheel 7 .
[0046] The outer wheel 7 is connected to the outer wall of the bearing 5 , and the inner wheel 6 is connected to the inner wall of the bearing 5 .
[0047] The permanent magnets 3 are arranged on the inner wall of the outer wheel 7 and are distributed in a ring array; the electromagnetic coils 4 are arranged on the outer wall of the inner wheel 6 and are distributed in a ring array.
[0048] Embodiment 2:
[0049] The difference between the second embodiment and the first embodiment is that the diameter of the rotor 1 is smaller than the diameter of the stator 2 , the rotor 1 is connected to the inner wall of the bearing 5 , and the stator 2 is connected to the outer wall of the bearing 5 .
[0050] The permanent magnets 3 are arranged on the outer wall of the rotor 1 and are distributed in a ring array; the electromagnetic coils 4 are arranged on the inner wall of the stator 2 and are distributed in a ring array.
[0051] The annular hollow brushless motor structure provided by the utility model can realize inner ring rotation or outer ring rotation by switching the stator 2 and the rotor 1, thereby meeting the needs of more application scenarios.
[0052] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.
Claims
1. A ring-shaped hollow brushless motor structure, characterized in that: It comprises an annular stator and an annular rotor, wherein the stator and the rotor are coaxially arranged and the stator and the rotor are rotatably connected to form a hollow annular structure; An electromagnetic coil is arranged on a side of the stator facing the rotor, and a permanent magnet is arranged on a side of the rotor facing the stator.
2. The ring-shaped hollow brushless motor structure according to claim 1, characterized in that: A bearing is provided between the rotor and the stator, and the rotor and the stator are rotatably connected via the bearing.
3. The annular hollow brushless motor structure according to claim 2, characterized in that: The diameter of the stator is smaller than the diameter of the rotor. The stator is connected to the inner wall of the bearing, and the rotor is connected to the outer wall of the bearing.
4. The annular hollow brushless motor structure according to claim 3 is characterized in that: The electromagnetic coils are arranged on the outer wall of the stator, and the electromagnetic coils are distributed in a ring array; The permanent magnets are arranged on the inner wall of the rotor, and are distributed in a ring array.
5. The ring-shaped hollow brushless motor structure according to claim 2, characterized in that: The diameter of the rotor is smaller than the diameter of the stator. The stator is connected to the outer wall of the bearing, and the rotor is connected to the inner wall of the bearing.
6. The ring-shaped hollow brushless motor structure according to claim 5, characterized in that: The electromagnetic coils are arranged on the inner wall of the stator, and the electromagnetic coils are distributed in a ring array; The permanent magnets are arranged on the outer wall of the rotor, and are distributed in a ring array.
7. The ring-shaped hollow brushless motor structure according to claim 1, characterized in that: The permanent magnet is a rare earth permanent magnet.
8. The ring-shaped hollow brushless motor structure according to claim 2, characterized in that: The bearing is a ball bearing, a roller bearing or an oil-containing bearing.
9. The ring-shaped hollow brushless motor structure according to claim 2, characterized in that: The bearing is a large-diameter bearing.
10. A winding wheel, characterized in that: It comprises the annular hollow brushless motor structure as described in any one of claims 1-9.