Shell and balance wheel integrated brushless motor
By integrating the wheel body of the brushless motor with the balance wheel, the motor shell is abolished and the bracket and magnetic steel are directly fixed inside the wheel body, the problems of high material costs and complex production processes are solved, and cost reduction and process simplification are achieved.
Patent Information
- Application Number
- CN202421962288.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-13
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-08-13
AI Technical Summary
The balance wheel structure of existing RC remote-controlled motorcycles requires the design of brushless motor housing and balance wheel respectively, resulting in high material costs and complex production processes.
The wheel body of the brushless motor is designed to be both the motor housing and the balance wheel itself. The shell is cancelled and the bracket and magnetic steel are directly fixed in the wheel body to simplify the assembly process.
It reduces the material input cost of the motor housing, simplifies the assembly process, and reduces the manufacturing cost.
Smart Images
Figure CN223141727U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of brushless motors, in particular to a brushless motor with an integrated housing and balance wheel. Background Art
[0002] As a popular remote control model, with the continuous development and integration of technologies such as mechanical engineering, electronic control, material science, and communication technology, RC (Radio Control) remote control motorcycles have made remarkable progress in performance, handling, and realism.
[0003] The balance wheel of the existing RC remote control motorcycle is mainly driven by a brushless motor. Specifically, the housing of the brushless motor is installed on the inner side wall of the balance wheel after applying glue, and then the balance wheel is continuously rotated by the brushless motor.
[0004] However, the existing balance wheel structure has the following deficiencies: Since the materials of the housing of the brushless motor and the balance wheel are similar, it is necessary to separately design the structures of the housing of the brushless motor and the balance wheel, which not only incurs excessive material costs, but also requires adding the process of fixing the housing and the balance wheel with glue, increasing the difficulty of the production process and resulting in too high manufacturing costs. Therefore, in order to solve the above deficiencies, the brushless motor with an integrated housing and balance wheel of the present application is proposed. Content of the Utility Model
[0005] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a brushless motor with an integrated housing and balance wheel that can reduce material costs and simplify the assembly process.
[0006] The purpose of the utility model is achieved by the following technical solutions:
[0007] A brushless motor with an integrated housing and balance wheel, comprising:
[0008] A wheel body, in which a rotating cavity is axially formed; and
[0009] A power assembly, which includes a stator frame, a rotating shaft, a bracket, a plurality of exciting coils, and a plurality of magnetic steels. The bracket is arranged on the inner side wall of the rotating cavity, each of the magnetic steels is arranged at intervals on the inner side wall of the rotating cavity, and each of the magnetic steels abuts against the bracket. The rotating shaft penetrates through the inner bottom wall of the rotating cavity, the stator frame is rotatably arranged on the rotating shaft, and each of the exciting coils is arranged at intervals on the outer side wall of the stator frame, so that each of the exciting coils and each of the magnetic steels are distributed facing each other.
[0010] Optionally, the power assembly further includes two ball bearings. Both of the two ball bearings are sleeved on the rotating shaft, and there is a gap between the two ball bearings. The stator bracket is sleeved on the two ball bearings.
[0011] Optionally, a shaft post is provided on the inner bottom wall of the rotating cavity. The rotating shaft passes through the shaft post, and the shaft post abuts against one of the ball bearings.
[0012] Optionally, the power assembly further includes a circlip. The circlip is snap-fitted on the rotating shaft, and the circlip abuts against the ball bearing away from the shaft post.
[0013] Optionally, a snap ring groove is formed on the rotating shaft, and the circlip is sleeved in the snap ring groove.
[0014] Optionally, the bracket includes a ring and a plurality of positioning blocks. The positioning blocks are arranged at intervals on one end face of the ring, so that an installation groove is formed between any two adjacent positioning blocks, and the magnet is located in the installation groove.
[0015] Optionally, the positioning block and the ring are of an integrally formed structure.
[0016] Optionally, the bracket, the magnet and the inner side wall of the rotating cavity are all glued.
[0017] Optionally, the wheel body is made of steel material.
[0018] Optionally, a clamping step is provided on the inner side wall of the rotating cavity, and the bracket abuts against the clamping step.
[0019] Compared with the prior art, the present utility model has at least the following advantages:
[0020] The brushless motor with an integrated housing and balance wheel of the present utility model includes a wheel body and a power assembly. A rotating cavity is axially formed in the wheel body. The power assembly includes a stator bracket, a rotating shaft, a bracket, a plurality of excitation coils and a plurality of magnets. The bracket is arranged on the inner side wall of the rotating cavity. The magnets are arranged at intervals on the inner side wall of the rotating cavity, and each magnet abuts against the bracket. The rotating shaft passes through the inner bottom wall of the rotating cavity. The stator bracket is rotatably arranged on the rotating shaft. The excitation coils are arranged at intervals on the outer side wall of the stator bracket, so that the excitation coils and the magnets are distributed opposite to each other. Thus, compared with the structure in the prior art where the housing of the brushless motor is installed in the balance wheel, the housing of the brushless motor is cancelled in this application, and the wheel body is set to be both the motor housing and the balance wheel itself. Therefore, the material input cost of the motor housing can be reduced, and at the same time, the assembly process of the motor housing is simplified. The bracket and the magnet are directly fixed in the wheel body, and the manufacturing cost is reduced by simplifying the process. Description of the Drawings
[0021] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the accompanying drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following accompanying drawings only show some embodiments of the present utility model, and thus should not be regarded as a limitation on the scope. For those of ordinary skill in the art, without creative efforts, other relevant accompanying drawings can also be obtained based on these drawings.
[0022] Figure 1 It is a schematic structural diagram of a brushless motor with an integrated housing and balance wheel according to an embodiment of the present utility model;
[0023] Figure 2 For Figure 1 It is a partial schematic structural diagram of the brushless motor with an integrated housing and balance wheel shown;
[0024] Figure 3 It is a schematic structural diagram of a wheel body according to an embodiment of the present utility model.
[0025] Explanation of reference numerals:
[0026] 10. Brushless motor with an integrated housing and balance wheel; 100. Wheel body; 200. Power assembly; 110. Rotation cavity; 210. Stator frame; 220. Rotating shaft; 230. Bracket; 240. Excitation coil; 250. Permanent magnet; 260. Ball bearing; 300. Axial post; 270. Snap ring; 221. Snap ring groove; 231. Ring; 232. Positioning block; 120. Positioning step. Specific embodiments
[0027] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the embodiments of the present utility model, and should not be construed as a limitation on the present utility model.
[0028] In the description of the embodiments of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present utility model.
[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present utility model, the meaning of "a plurality of" is two or more unless otherwise specifically defined.
[0030] In the embodiments of the present utility model, unless otherwise clearly specified and defined, terms such as "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.
[0031] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present utility model are shown in the drawings.
[0032] As Figure 1 and Figure 2 shown, a brushless motor 10 with an integrated housing and balance wheel includes a wheel body 100 and a power assembly 200. A rotation cavity 110 is axially formed in the wheel body 100. The power assembly 200 includes a stator frame 210, a rotating shaft 220, a bracket 230, a plurality of exciting coils 240 and a plurality of magnetic steels 250. The bracket 230 is disposed on the inner sidewall of the rotation cavity 110. Each magnetic steel 250 is spacedly disposed on the inner sidewall of the rotation cavity 110, and each magnetic steel 250 abuts against the bracket 230. The rotating shaft 220 passes through the inner bottom wall of the rotation cavity 110. The stator frame 210 is rotatably disposed on the rotating shaft 220. Each exciting coil 240 is spacedly disposed on the outer sidewall of the stator frame 210, so that each exciting coil 240 and each magnetic steel 250 are distributed facing each other.
[0033] It should be noted that, for example, the wheel body 100 is made of steel material, and a rotating cavity 110 is formed on the wheel body 100, where the rotating cavity 110 is located at one end of the wheel body 100. The bracket 230 is fitted and installed on the inner side wall of the rotating cavity 110, and then each magnet 250 is fitted and installed on the inner side wall of the rotating cavity 110, where each magnet 250 abuts against the bracket 230, so that any two adjacent magnets 250 are equally spaced. The rotating shaft 220 passes through the inner bottom wall of the rotating cavity 110, so that the rotating shaft 220 is fixed to the wheel body 100 as a whole. The stator frame 210 is rotatably installed on the rotating shaft 220, that is, the stator frame 210 can rotate relative to the wheel body 100. Each exciting coil 240 is installed on the outer side wall of the stator frame 210 at intervals, and the distance between any two adjacent exciting coils 240 is the same. The exciting coils 240 and the magnets 250 are arranged in a stepped manner, so that the exciting coils 240 and the magnets 250 are aligned face to face. In this way, when the exciting coils 240 are powered in sequence, a rotating magnetic field can be generated, so that the wheel body 100 fixed together with the magnets 250 can rotate continuously. In this way, compared with the structure in the prior art where the housing of the brushless motor is installed in the balance wheel, in this application, the housing of the brushless motor is cancelled, and the wheel body 100 is set to be both the motor housing and the balance wheel itself. Therefore, the material input cost of the motor housing can be reduced, and at the same time, the assembly process of the motor housing is simplified. The bracket 230 and the magnets 250 are directly fixed in the wheel body 100, and the manufacturing cost is reduced by simplifying the process.
[0034] As Figure 1 shown, in one embodiment, the power assembly 200 further includes two ball bearings 260. Both of the two ball bearings 260 are sleeved on the rotating shaft 220, and there is a gap between the two ball bearings 260. The stator frame 210 is sleeved on the two ball bearings 260. In this way, the rotating shaft 220 and the stator frame 210 are connected by the two ball bearings 260, ensuring that the rotating shaft 220 can rotate stably relative to the stator frame 210.
[0035] As Figure 1 and Figure 3 shown, in one embodiment, a shaft post 300 is provided on the inner bottom wall of the rotating cavity 110. The rotating shaft 220 passes through the shaft post 300, and the shaft post 300 abuts against one of the ball bearings 260.
[0036] It should be noted that the shaft post 300 and the wheel body 100 are of an integrally formed structure, and the shaft post 300 extends into the rotating cavity 110. In this way, the shaft post 300 abuts against the ball bearing 260, ensuring that the wheel body 100 can rotate stably relative to the stator frame 210.
[0037] As Figure 1As shown, in one embodiment, the power assembly 200 further includes a snap ring 270, which is clamped onto the rotating shaft 220 and abuts against the ball bearing 260 away from the shaft column 300.
[0038] In this way, the two ball bearings 260 are clamped and fixed together by the snap ring 270 and the shaft column 300, so that the ball bearings 260 are stably clamped between the stator bracket 210 and the rotating shaft 220, thereby ensuring that the rotating shaft 220 can rotate stably relative to the stator bracket 210 continuously.
[0039] As Figure 2 shown, in one embodiment, a snap ring groove 221 is formed on the rotating shaft 220, and the snap ring 270 is sleeved in the snap ring groove 221. In this way, the snap ring 270 is reliably fixed on the rotating shaft 220, ensuring that the snap ring 270 stably clamps the ball bearing 260.
[0040] As Figure 2 shown, in one embodiment, the bracket 230 includes a frame ring 231 and a plurality of positioning blocks 232. The positioning blocks 232 are arranged at intervals on one end face of the frame ring 231, so as to form an installation groove between any two adjacent positioning blocks 232, and the magnet 250 is located in the installation groove.
[0041] It should be noted that in order to make any two adjacent magnets 250 be equidistantly distributed, so as to facilitate the rapid fixing of the magnets 250 on the inner side wall of the rotating cavity 110, the bracket 230 is set as a structure in which the frame ring 231 is fixed to a plurality of positioning blocks 232, and the magnet 250 can be adaptively accommodated in the installation groove. In one embodiment, the positioning block 232 and the frame ring 231 are of an integrally formed structure. In this way, the magnets 250 are equidistantly distributed.
[0042] In one embodiment, the bracket 230, the magnet 250 and the inner side wall of the rotating cavity 110 are all adhesively bonded. Specifically, after applying glue on the inner side wall of the rotating cavity 110, the bracket 230 and each magnet 250 are sequentially pasted and fixed on the inner side wall of the rotating cavity 110.
[0043] As Figure 2 and Figure 3 shown, in one embodiment, a clamping step 120 is provided on the inner side wall of the rotating cavity 110, and the bracket 230 abuts against the clamping step 120.
[0044] It should be noted that in order to facilitate the installation of the bracket 230 at a specified position in the rotating cavity 110, a clamping step 120 is provided on the inner side wall of the rotating cavity 110. During installation, it is only necessary to ensure that the frame ring 231 of the bracket 230 abuts against the clamping step 120 to determine that the bracket 230 is installed in place.
[0045] The above-described embodiments merely represent several implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all fall within the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.
Claims
1. A brushless motor with an integrated housing and balance wheel, characterized in that, Comprising: A wheel body, in which a rotating cavity is axially provided. And A power assembly, which includes a stator frame, a rotating shaft, a bracket, a plurality of exciting coils and a plurality of permanent magnets. The bracket is arranged on the inner side wall of the rotating cavity. Each of the permanent magnets is arranged at intervals on the inner side wall of the rotating cavity, and each of the permanent magnets abuts against the bracket. The rotating shaft penetrates through the inner bottom wall of the rotating cavity. The stator frame is rotatably arranged on the rotating shaft. Each of the exciting coils is arranged at intervals on the outer side wall of the stator frame, so that each of the exciting coils is distributed opposite to each of the permanent magnets.
2. The integrated brushless motor with a housing and a balance wheel according to claim 1, wherein The power assembly further includes two ball bearings. Both of the two ball bearings are sleeved on the rotating shaft, and there is a gap between the two ball bearings. The stator frame is sleeved on the two ball bearings.
3. The integrated brushless motor with a housing and a balance wheel according to claim 2, characterized in that, An axle post is arranged on the inner bottom wall of the rotating cavity. The rotating shaft penetrates through the axle post, and the axle post abuts against one of the ball bearings.
4. The integrated brushless motor of the housing and the balance wheel according to claim 3, characterized in that, The power assembly further includes a snap ring. The snap ring is clamped on the rotating shaft, and the snap ring abuts against the ball bearing far from the axle post.
5. The integrated brushless motor with a casing and a balance wheel according to claim 4, characterized in that, A snap ring groove is formed on the rotating shaft, and the snap ring is sleeved in the snap ring groove.
6. The integrated brushless motor with a casing and a balance wheel according to claim 1, characterized in that, The bracket includes a ring and a plurality of positioning blocks. Each of the positioning blocks is arranged at intervals on one end face of the ring, so that an installation groove is formed between any two adjacent positioning blocks, and the permanent magnet is located in the installation groove.
7. The integrated brushless motor with a housing and a balance wheel according to claim 6, characterized in that, The positioning block and the ring are of an integrally formed structure.
8. The integrated brushless motor with a housing and a balance wheel according to claim 7, characterized in that, The bracket, the permanent magnet and the inner side wall of the rotating cavity are all adhesively bonded.
9. The integrated brushless motor with a housing and a balance wheel according to claim 1, characterized in that, The wheel body is made of steel material.
10. The integrated brushless motor with a casing and a balance wheel according to claim 1, characterized in that, A clamping step is arranged on the inner side wall of the rotating cavity, and the bracket abuts against the clamping step.