High-reliability brushless motor
By adopting the ring end block and outer convex ring design in the brushless motor, the problems of poor sealing and screw damage to the motor are solved, and high-reliability motor sealing and fixing are achieved.
Patent Information
- Application Number
- CN202422441396.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-09
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-10-09
AI Technical Summary
The sealing between the front end cover and the housing of existing brushless motors is poor, and the screws are too long and it is easy to damage the motor.
The ring end block and outer convex ring are designed, which is accommodated in the ring groove. The sealing ring is pressed on the convex edge to ensure sealing and make the locking screw hole face toward the inner bottom wall of the ring groove to avoid the screw damaging the motor.
Improves the sealing of the motor, protects the inside of the motor from damage, and ensures that the screws do not extend into the case when fixed.
Smart Images
Figure CN223181923U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of brushless motors, in particular to a highly reliable brushless motor. Background Technique
[0002] With the development of the economy and the improvement of people's living standards, the market scale of RC model cars has been continuously growing. As the power source of RC model cars, the performance and quality of brushless motors have always been the focus of attention in the industry.
[0003] The structure of the mainstream brushless motors on the market at present is as follows: The stator is installed in a cylindrical housing, the front end covers are locked at both ends of the cylindrical housing by screws, and the rotor is rotatably installed on the front end covers.
[0004] However, the existing brushless motors have the following limitations in actual use: The front end cover and the housing are a detachable structure fastened by screws, and its sealing requirement is high. However, the current brushless motors lack corresponding sealing measures, resulting in poor sealing between the front end cover and the housing of the brushless motor; Secondly, when the brushless motor is fixed on the model car, it mainly relies on the screw holes reserved on the front end cover. During the fixed installation, once the screw length is too long, the screw is likely to extend into the housing and contact the stator wiring harness, thus causing damage to the motor. Therefore, in order to solve the above deficiencies, the highly reliable brushless motor 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 highly reliable brushless motor with good sealing performance and effectively avoiding damage to the motor caused by too long screws.
[0006] The purpose of the utility model is achieved by the following technical solutions:
[0007] A highly reliable brushless motor, comprising:
[0008] A stator assembly, the stator assembly includes a housing and a stator, the stator is disposed on the inner side wall of the housing, a ring end block is provided on one end of the housing, and a circular ring groove is opened on the ring end block, so that a convex edge is formed on one side of the ring end block close to the axis of the housing; and
[0009] The rotor assembly includes a front end cover, a sealing ring, a rear end cover and a rotor. The rear end cover is disposed at one end of the machine housing away from the ring end block. An outer convex ring and an inner convex ring are provided on one side surface of the front end cover, and a sealing groove is formed between the outer convex ring and the inner convex ring. A plurality of locking screw holes are formed in the outer convex ring, and each locking screw hole extends to the other side surface of the front end cover. The sealing ring is accommodated in the sealing groove. When the front end cover is disposed at one end of the machine housing close to the ring end block, the convex edge presses against the sealing ring, and the outer convex ring is accommodated in the circular ring groove. The rotor is rotatably connected to the front end cover and the rear end cover respectively.
[0010] Optionally, a plurality of lock cover screw holes are formed on one side of the ring end block away from the circular ring groove, and a plurality of through holes are further formed on the front end cover. The through holes are used for passing screws and screwing into the lock cover screw holes to fix the front end cover to the machine housing.
[0011] Optionally, a shaft hole is formed on the axis of the front end cover, and one end of the rotor passes through the shaft hole.
[0012] Optionally, a front bearing chamber is further formed on one side surface of the front end cover close to the inner convex ring, and the front bearing chamber communicates with the shaft hole.
[0013] Optionally, a rear bearing chamber is formed on one side surface of the rear end cover close to the rotor. A bearing is respectively disposed in the front bearing chamber and the rear bearing chamber, and both ends of the rotor respectively pass through the two bearings.
[0014] Optionally, the inner convex ring is higher than the outer convex ring.
[0015] Optionally, the inner side wall of the sealing groove close to the inner convex ring abuts against the inner side wall of the ring end block.
[0016] Optionally, the outer side wall of the outer convex ring away from the sealing groove abuts against the inner side wall of the circular ring groove away from the convex edge.
[0017] Optionally, the ring end block and the machine housing are of an integrally formed structure.
[0018] Compared with the prior art, the present utility model has at least the following advantages:
[0019] When the front end cover is buckled and installed on one end of the casing close to the ring end block, the outer convex ring is accommodated in the circular ring groove, and at the same time, the convex edge presses against the sealing ring in the sealing groove. In this way, the gap between the front end cover and the casing can be reliably eliminated, ensuring the sealing performance between the casing and the front end cover. Further, since the outer convex ring is located in the circular ring groove, the locking screw holes face the inner bottom wall of the circular ring groove. Therefore, when the motor is subsequently fixedly installed on the model vehicle, even if the screws used are too long, they will only abut against the inner bottom wall of the circular ring groove and will not extend into the casing, protecting the inside of the motor from damage. Brief Description of the Drawings
[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.
[0021] Figure 1 Structural schematic diagram of a highly reliable brushless motor according to an embodiment of the present invention;
[0022] Figure 2 is Figure 1 Cross-sectional structural schematic diagram of the highly reliable brushless motor shown;
[0023] Figure 3 is Figure 1 Exploded structural schematic diagram of the highly reliable brushless motor described;
[0024] Figure 4 Structural schematic diagram of the casing and the ring end block according to an embodiment of the present invention;
[0025] Figure 5 Structural schematic diagram of the front end cover according to an embodiment of the present invention;
[0026] Figure 6 is Figure 5 Cross-sectional structural schematic diagram of the front end cover shown.
[0027] Explanation of the reference numerals in the drawings:
[0028] 10. Highly reliable brushless motor; 100. Stator assembly; 200. Rotor assembly; 110. Casing; 120. Stator; 130. Ring end block; 131. Circular ring groove; 132. Convex edge; 210. Front end cover; 220. Sealing ring; 230. Rear end cover; 240. Rotor; 250. Outer convex ring; 260. Inner convex ring; 211. Sealing groove; 251. Locking screw hole; 133. Locking cover screw hole; 212. Through hole; 213. Shaft hole; 214. Front bearing chamber; 231. Rear bearing chamber. Detailed implementation manners
[0029] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals denote 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 to the present utility model.
[0030] 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, and 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 to the present utility model.
[0031] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the 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, "a plurality" means two or more unless otherwise specifically defined.
[0032] In the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "mounted", "connected", "connected to", "fixed", etc. should be understood 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 internal communication of 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 situations.
[0033] For the convenience of understanding the present utility model, the present utility model will be described more comprehensively below with reference to the relevant accompanying drawings. The preferred embodiments of the present utility model are shown in the drawings.
[0034] As Figures 1 to 6As shown in the figure, a highly reliable brushless motor 10 includes a stator assembly 100 and a rotor assembly 200. The stator assembly 100 includes a housing 110 and a stator 120. The stator 120 is disposed on the inner sidewall of the housing 110. A ring end block 130 is provided at one end of the housing 110. A circular ring groove 131 is formed in the ring end block 130, so that a convex edge 132 is formed on the side of the ring end block 130 close to the axis of the housing 110. The rotor assembly 200 includes a front end cover 210, a sealing ring 220, a rear end cover 230 and a rotor 240. The rear end cover 230 is disposed at the end of the housing 110 away from the ring end block 130. An outer convex ring 250 and an inner convex ring 260 are provided on one side surface of the front end cover 210, and a sealing groove 211 is formed between the outer convex ring 250 and the inner convex ring 260. A plurality of locking screw holes 251 are formed in the outer convex ring 250, and each locking screw hole 251 extends to the other side surface of the front end cover 210. The sealing ring 220 is accommodated in the sealing groove 211. When the front end cover 210 is disposed at the end of the housing 110 close to the ring end block 130, the convex edge 132 presses against the sealing ring 220, and the outer convex ring 250 is accommodated in the circular ring groove 131. The rotor 240 is rotatably connected to the front end cover 210 and the rear end cover 230 respectively.
[0035] It should be noted that the stator 120 is installed on the inner sidewall of the housing 110. A ring end block 130 is provided at one end of the housing 110. A circular ring groove 131 is formed on the outer side surface of the ring end block 130. This circular ring groove 131 forms a convex edge 132 on the side of the ring end block 130 close to the axis of the housing 110. Further, an outer convex ring 250 and an inner convex ring 260 are provided on the side surface of the front end cover 210 close to the housing 110. The outer convex ring 250 is located outside the inner convex ring 260, and the interval between the outer convex ring 250 and the inner convex ring 260 forms a sealing groove 211. Locking screw holes 251 are formed in the outer convex ring 250. In this way, the motor can be fixedly installed on the model car by using these locking screw holes 251. When the front end cover 210 is snap-fitted and installed at the end of the housing 110 close to the ring end block 130, the outer convex ring 250 is accommodated in the circular ring groove 131. At the same time, the convex edge 132 will press against the sealing ring 220 in the sealing groove 211. In this way, the sealing ring 220 is used to reliably eliminate the gap between the front end cover 210 and the housing 110, ensuring the sealing performance between the housing 110 and the front end cover 210. Further, since the outer convex ring 250 is located in the circular ring groove 131, the locking screw holes 251 face the inner bottom wall of the circular ring groove 131. Therefore, when the motor is subsequently fixedly installed on the model car, even if the used screws are too long, they will only abut against the inner bottom wall of the circular ring groove 131 and will not extend into the housing 110, protecting the inside of the motor from damage.
[0036] Such as Figure 4 And Figure 5As shown, in one embodiment, a plurality of lock cover screw holes 133 are provided on the side of the ring end block 130 away from the circular ring groove 131, and a plurality of through holes 212 are also provided on the front end cover 210. The through holes 212 are used for passing through screws and screwing into the lock cover screw holes 133, so as to fix the front end cover 210 to the machine shell 110. In this way, it is convenient to quickly install the front end cover 210 on the machine shell 110.
[0037] As Figure 5 shown, in one embodiment, a shaft hole 213 is provided on the axis of the front end cover 210, and one end of the rotor 240 is inserted into the shaft hole 213. In this way, one end of the rotor extends to the outside from the shaft hole 213. In one embodiment, one end of the rotor 240 and the shaft hole 213 are installed with a clearance.
[0038] As Figure 5 described, in one embodiment, a front bearing chamber 214 is further provided on the side surface of the front end cover 210 close to the inner convex ring 260, and the front bearing chamber 214 communicates with the shaft hole 213. Further, a rear bearing chamber 231 is provided on the side surface of the rear end cover 230 close to the rotor 240. A bearing is provided in each of the front bearing chamber 214 and the rear bearing chamber 231, and both ends of the rotor 240 are respectively inserted through the two bearings.
[0039] In this way, by installing bearings in the front bearing chamber 214 and the rear bearing chamber 231, and the rotor 240 passes through the two bearings in sequence, the rotor 240 can rotate stably relative to the front end cover 210 and the rear end cover 230.
[0040] In one embodiment, the inner convex ring 260 is higher than the outer convex ring 250. In this way, there is a height difference between the inner convex ring 260 and the outer convex ring 250. With the cooperation of the sealing ring 220, the sealing performance between the front end cover 210 and the ring end block 130 is effectively improved.
[0041] In one embodiment, the inner side wall of the sealing groove 211 close to the inner convex ring 260 abuts against the inner side wall of the ring end block 130. The outer side wall of the outer convex ring 250 away from the sealing groove 211 abuts against the inner side wall of the circular ring groove 131 away from the convex edge 132. In this way, the sealing performance between the front end cover 210 and the ring end block 130 can be further improved. Moreover, it is convenient for the front end cover 210 to cooperate with the ring end block 130, and it is convenient for the front end cover 210 to be installed and fixed to the machine shell 110.
[0042] Further, in one embodiment, the ring end block 130 and the machine shell 110 are of an integrally formed structure. In this way, it is ensured that there is sufficient structural strength and sealing performance between the ring end block 130 and the machine shell 110.
[0043] 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 to 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 highly reliable brushless motor, characterized in that, Comprising: A stator assembly, the stator assembly including a housing and a stator, the stator being disposed on the inner sidewall of the housing, a ring end block being provided at one end of the housing, a circular groove being formed in the ring end block so that a convex edge is formed on a side of the ring end block close to the axis of the housing; and A rotor assembly, the rotor assembly including a front end cover, a sealing ring, a rear end cover and a rotor, the rear end cover being disposed on an end of the housing away from the ring end block, an outer convex ring and an inner convex ring being provided on one side surface of the front end cover, and a sealing groove being formed between the outer convex ring and the inner convex ring, a plurality of locking screw holes being formed in the outer convex ring, each locking screw hole extending to the other side surface of the front end cover, the sealing ring being received in the sealing groove, when the front end cover is disposed on an end of the housing close to the ring end block, the convex edge pressing against the sealing ring, and the outer convex ring being received in the circular groove, the rotor being rotatably connected to the front end cover and the rear end cover respectively.
2. The highly reliable brushless motor according to claim 1, characterized in that, A plurality of lock cover screw holes are formed in a side of the ring end block away from the circular groove, a plurality of through holes are further formed in the front end cover, the through holes being used for passing screws and screwing into the lock cover screw holes so as to fix the front end cover to the housing.
3. The high-reliability brushless motor according to claim 1, characterized in that, A shaft hole is formed in the axis of the front end cover, and one end of the rotor is inserted into the shaft hole.
4. The high-reliability brushless motor according to claim 3, characterized in that, A front bearing chamber is further formed in a side surface of the front end cover close to the inner convex ring, and the front bearing chamber is communicated with the shaft hole.
5. The high-reliability brushless motor according to claim 4, wherein A rear bearing chamber is formed in a side surface of the rear end cover close to the rotor, a bearing is respectively provided in the front bearing chamber and the rear bearing chamber, and both ends of the rotor are respectively inserted into the two bearings.
6. The high-reliability brushless motor according to claim 1, wherein, The inner convex ring is higher than the outer convex ring.
7. The high-reliability brushless motor according to claim 6, wherein The inner sidewall of the sealing groove close to the inner convex ring abuts against the inner sidewall of the ring end block.
8. The highly reliable brushless motor according to claim 1, characterized in that The outer sidewall of the outer convex ring away from the sealing groove abuts against the inner sidewall of the circular groove away from the convex edge.
9. The highly reliable brushless motor according to claim 1, wherein The ring end block and the housing are of an integrally formed structure.