Anti-creeping stator structure and brushless motor

Abstract

The utility model aims to provide an anti-creeping stator structure and a brushless motor, the anti-creeping stator structure comprises a supporting assembly and a leading-out assembly, the supporting assembly comprises a stator iron core and a casing, the casing is arranged at one end of the stator iron core, the leading-out assembly comprises an isolation plate, a wiring plate, a plurality of copper bars and a plurality of winding coils, the isolation plate is arranged in the casing, and the wiring plate is arranged in the casing. A plurality of isolating rings are arranged on one side face, close to the stator iron core, of the isolating plate, the wiring board is arranged on one side face, close to the stator iron core, of the isolating plate, the isolating rings penetrate through the wiring board, the copper bars are arranged on one side face, away from the wiring board, of the isolating plate at intervals, and the winding coils are arranged in the stator iron core in a pairwise equidistant mode. And one end of each winding coil is connected with the wiring board, and the other end of each winding coil penetrates through each isolating ring to be connected with each copper bar. Therefore, electric leakage caused by too short distance between the two end wire heads of the winding coil can be avoided.

Description

Technical Field

[0001] This utility model relates to the technical field of motors, and in particular to a stator structure for preventing leakage and a brushless motor. Background Technology

[0002] RC car models refer to remote-controlled model cars, a type of radio-controlled model car. RC car models typically possess suspension systems, power systems, and handling characteristics similar to real cars, simulating their performance. As the scale of RC car models continues to expand, the performance requirements for brushless motors, as the primary power source, are becoming increasingly stringent.

[0003] The stator structure of a brushless motor relies on the winding coils to generate a periodic magnetic field. Due to structural limitations, the start and end points of the winding coils in a brushless motor are usually not at the same end. However, as requirements change, there is a need for brushless motors where the start and end points of the winding coils are at the same end, that is, the number of winding coils is an integer.

[0004] However, this stator structure, which sets the start and end points of the winding coils at the same end, currently has the following problem: due to the compact internal space of the electronic structure, the structure with the start and end points of the winding coils at the same end is prone to leakage due to excessive proximity. Therefore, in order to solve this problem, the leakage-proof stator structure and brushless motor of this application are proposed. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a stator structure and brushless motor that effectively avoids leakage due to the overly compact structure of the stator structure with integer winding coils, and has high reliability.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A stator structure for preventing leakage current includes:

[0008] A support assembly, comprising a stator core and a housing, wherein the housing is disposed at one end of the stator core; and

[0009] The lead-out assembly includes an isolation plate, a terminal block, several copper busbars, and several winding coils. The isolation plate is disposed inside the housing, and several isolation rings are provided on the side of the isolation plate near the stator core. The terminal block is disposed on the side of the isolation plate near the stator core, and each of the isolation rings passes through the terminal block. Each of the copper busbars is spaced apart on the side of the isolation plate away from the terminal block. Each of the winding coils is disposed in pairs equidistantly inside the stator core, and one end of each winding coil is connected to the terminal block. The other end of each winding coil passes through each of the isolation rings to connect to each of the copper busbars.

[0010] Optionally, a plurality of slots are provided on the side of the isolation plate away from the terminal block, and each copper busbar is respectively accommodated in each slot.

[0011] Optionally, a limiting groove is also provided on the side of the isolation plate near the terminal block, and the terminal block is accommodated in the limiting groove.

[0012] Optionally, a plurality of clearance slots are also provided on the inner bottom wall of the limiting groove, and the end of each winding coil connected to the terminal block is aligned with each clearance slot.

[0013] Optionally, the isolation ring and the isolation plate are integrally formed.

[0014] Optionally, the inner wall of the stator core is provided with an insulating layer.

[0015] Optionally, a plurality of first locking grooves are provided on the outer side wall of the stator core, and a plurality of second locking grooves are provided on the outer side wall of the isolation plate, with each second locking groove aligned with each of the first locking grooves.

[0016] Optionally, the winding coil is provided with three coils, which are equidistant from each other.

[0017] A brushless motor includes a leakage-proof stator structure as described above, and further includes a front cover, a rear cover, and a rotor structure. The front cover is disposed on the end of the stator core away from the housing, and the rear cover is disposed on the end of the housing away from the stator core. The rotor structure passes through the stator core to be rotatably connected to the front cover and the rear cover respectively.

[0018] Compared with the prior art, the present invention has at least the following advantages:

[0019] This utility model discloses a leakage-proof stator structure and a brushless motor, including a support assembly and a lead-out assembly. The support assembly includes a stator core and a housing, with the housing located at one end of the stator core. The lead-out assembly includes an isolation plate, a terminal block, several copper busbars, and several winding coils. The isolation plate is located inside the housing, and several isolation rings are provided on the side of the isolation plate near the stator core. The terminal block is located on the side of the isolation plate near the stator core, and each isolation ring passes through the terminal block. Each copper busbar is spaced apart on the side of the isolation plate away from the terminal block. Each winding coil is arranged equidistantly in pairs inside the stator core, and one end of each winding coil is connected to the terminal block. The other end of each winding coil passes through each isolation ring to connect to each copper busbar. In this way, both ends of each winding coil extend from the end of the stator core closest to the housing. By setting an isolation plate and multiple isolation rings on the isolation plate, one end of the winding coil can extend out from the through hole of the isolation ring. Even if the space is tight, leakage of current due to the close proximity of the two ends of the winding coil can be avoided. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the anti-leakage stator structure according to one embodiment of the present invention;

[0022] Figure 2 for Figure 1 The diagram shows an exploded view of the anti-leakage stator structure.

[0023] Figure 3 for Figure 1 A schematic cross-sectional view of the anti-leakage stator structure shown.

[0024] Figure 4 for Figure 1 A partial structural diagram of the anti-leakage stator structure is shown.

[0025] Figure 5 This is a schematic diagram of the structure of the isolation plate according to one embodiment of the present invention;

[0026] Figure 6 for Figure 5 The diagram shows a structural schematic of the isolation plate from another angle.

[0027] Figure 7 This is a schematic diagram of the structure of a brushless motor according to one embodiment of the present invention.

[0028] Explanation of reference numerals in the attached figures:

[0029] 10. Leakage-proof stator structure; 100. Support assembly; 200. Lead-out assembly; 110. Stator core; 120. Housing; 210. Isolation plate; 220. Terminal block; 230. Copper busbar; 240. Winding coil; 250. Isolation ring; 211. Material clamping groove; 212. Limiting groove; 213. Clearance groove; 1111. First locking groove; 214. Second locking groove; 1. Brushless motor; 20. Front cover; 30. Rear cover; 40. Rotor structure. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of this utility model, and should not be construed as limiting the utility model.

[0031] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] Furthermore, 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 number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0034] To facilitate understanding of this utility model, a more comprehensive description will be provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model.

[0035] like Figures 1 to 5 As shown, a leakage-proof stator structure 10 includes a support assembly 100 and a lead-out assembly 200. The support assembly 100 includes a stator core 110 and a housing 120. The housing 120 is disposed on one end of the stator core 110. The lead-out assembly 200 includes an isolation plate 210, a terminal block 220, several copper busbars 230, and several winding coils 240. The isolation plate 210 is disposed inside the housing 120, and several isolation rings 250 are provided on the side of the isolation plate 210 near the stator core 110. The terminal block 220 is disposed on the side of the isolation plate 210 near the stator core 110, and each isolation ring 250 passes through the terminal block 220. Each copper busbar 230 is disposed at intervals on the side of the isolation plate 210 away from the terminal block 220. Each winding coil 240 is disposed in pairs equidistantly within the stator core 110, and one end of each winding coil 240 is connected to the terminal block 220. The other end of each winding coil 240 passes through each isolation ring 250 to be connected to each copper busbar 230 respectively.

[0036] It should be noted that the stator core 110 and the housing 120 are coaxially mounted. An isolation plate 210 is installed inside the housing 120, and multiple isolation rings 250 are integrally formed on the side of the isolation plate 210 closest to the stator core 110. Each isolation ring 250 has a through hole. A terminal block 220 is installed on the side of the isolation plate 210 closest to the stator core 110, with each isolation ring 250 passing through the terminal block 220. Each copper busbar 230 is non-contactly installed on the side of the isolation plate 210 furthest from the stator core 110. Each winding coil 240 is installed equidistantly in pairs inside the stator core 110, with one end of each winding coil 240 connected to the terminal block 220, and the other end of each winding coil 240 passing through the through hole of each isolation ring 250 to connect to each copper busbar 230. Thus, both ends of each winding coil 240 extend from the end of the stator core 110 closest to the housing 120. By setting an isolation plate 210 and multiple isolation rings 250 on the isolation plate 210, one end of the winding coil 240 can extend out from the through hole of the isolation ring 250. Even in a compact space, leakage of current due to the close proximity of the two ends of the winding coil 240 can be avoided. The anti-leakage stator structure 10 provided in this application is suitable for situations where the number of turns of the winding coil 240 is an integer and the internal space is compact.

[0037] like Figure 6As shown, in one embodiment, a plurality of retaining slots 211 are provided on the side of the isolation plate 210 away from the terminal block 220, and each copper busbar 230 is respectively accommodated in the respective retaining slot 211. In this way, the copper busbar 230 is stably confined within the retaining slot 211, avoiding the possibility of the copper busbar 230 shifting and touching.

[0038] like Figure 5 As shown, in one embodiment, a limiting groove 212 is also provided on the side of the isolation plate 210 near the terminal block 220, and the terminal block 220 is accommodated in the limiting groove 212.

[0039] This allows the terminal block 220 to be embedded in the limiting groove 212, ensuring that the terminal block 220 and the isolation plate 210 are stably installed, and preventing the terminal block 220 from touching the end of the winding coil 240 that passes through the isolation ring 250.

[0040] like Figure 5 As shown, in one embodiment, a plurality of clearance slots 213 are also provided on the inner bottom wall of the limiting slot 212, and the end of each winding coil 240 connected to the terminal block 220 is aligned with each clearance slot 213.

[0041] It should be noted that the winding coil 240 and the terminal block 220 are fixed by welding. Therefore, there will be solder joints between the wire ends of the winding coil 240 and the terminal block 220. To prevent the solder joints from pushing the terminal block 220 out of the limiting groove 212, a clearance groove 213 is provided on the inner bottom wall of the limiting groove 212. The clearance groove 213 is aligned with the wire ends of the winding coil 240. When the winding coil 240 is welded to the terminal block 220, the solder joints are located within the clearance groove 213.

[0042] In one embodiment, the isolation ring 250 and the isolation plate 210 are integrally formed. In this way, when the winding coil 240 passes through the through hole of the isolation ring 250, the winding coil 240 and the terminal block 220 can be effectively insulated, avoiding the possibility of the two ends of the winding coil 240 touching.

[0043] In one embodiment, an insulating layer is provided on the inner sidewall of the stator core 110. It should be noted that the stator core 110 is made of metal, and by providing an insulating layer, short circuits caused by contact between the winding coil 240 and the stator core 110 can be avoided.

[0044] like Figure 4 As shown, in one embodiment, a plurality of first locking grooves 1111 are provided on the outer side wall of the stator core 110, and a plurality of second locking grooves 214 are provided on the outer side wall of the isolation plate 210, with each second locking groove 214 aligned with each first locking groove 1111.

[0045] Thus, a first locking groove 1111 is provided on the stator core 110, and a second locking groove 214 is provided on the isolation plate 210, so that the stator core 110 and the housing 120 can be installed and fixed by passing through screws.

[0046] In one embodiment, three winding coils 240 are provided, and the three winding coils 240 are distributed equidistantly between each other. Furthermore, three isolation rings 250 are also provided, and correspondingly, three copper busbars 230 are also provided.

[0047] like Figure 7 As shown, in one embodiment, a brushless motor 1 includes a leakage-proof stator structure 10, a front end cover 20, a rear end cover 30, and a rotor structure 40. The front end cover 20 is disposed on the end of the stator core 110 away from the housing 120, and the rear end cover 30 is disposed on the end of the housing 120 away from the stator core 110. The rotor structure 40 passes through the stator core 110 to be rotatably connected to the front end cover 20 and the rear end cover 30 respectively.

[0048] It should be noted that the front cover 20 is installed on the end of the stator core 110 away from the housing 120. The rear cover 30 is installed on the end of the housing 120 away from the stator core 110. The rotor structure 40 passes through the stator core 110 and is rotatably connected to the front cover 20 and the rear cover 30 respectively. For example, bearings are installed on both the front cover 20 and the rear cover 30. The rotor structure 40 passes through the bearings of the front cover 20 and the rear cover 30 respectively. This allows the rotor structure 40 to rotate stably relative to each winding coil 240. One end of the rotor structure 40 also protrudes from the front cover 20. Furthermore, by passing screws through the rear cover 30, the second locking groove 214, and the first locking groove 1111, and then screwing them onto the front cover 20, the leakage-proof stator structure 10, the front cover 20, the rear cover 30, and the rotor structure 40 can be locked and fixed into a complete brushless motor 1.

[0049] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A stator structure for preventing leakage current, characterized in that, include: A support assembly, comprising a stator core and a housing, wherein the housing is disposed on one end of the stator core; and The lead-out assembly includes an isolation plate, a terminal block, several copper busbars, and several winding coils. The isolation plate is disposed inside the housing, and several isolation rings are provided on the side of the isolation plate near the stator core. The terminal block is disposed on the side of the isolation plate near the stator core, and each of the isolation rings passes through the terminal block. Each of the copper busbars is spaced apart on the side of the isolation plate away from the terminal block. Each of the winding coils is disposed in pairs equidistantly inside the stator core, and one end of each winding coil is connected to the terminal block. The other end of each winding coil passes through each of the isolation rings to connect to each of the copper busbars.

2. The anti-leakage stator structure according to claim 1, characterized in that, The isolation plate has multiple slots on the side away from the terminal block, and each copper busbar is respectively housed in the slot.

3. The anti-leakage stator structure according to claim 2, characterized in that, A limiting groove is also provided on the side of the isolation plate near the terminal block, and the terminal block is accommodated in the limiting groove.

4. The anti-leakage stator structure according to claim 3, characterized in that, The inner bottom wall of the limiting groove is also provided with several clearance slots, and the end of each winding coil connected to the terminal block is aligned with each clearance slot.

5. The anti-leakage stator structure according to claim 1, characterized in that, The isolation ring and the isolation plate are integrally formed.

6. The anti-leakage stator structure according to claim 1, characterized in that, The inner wall of the stator core is provided with an insulating layer.

7. The anti-leakage stator structure according to claim 1 or 6, characterized in that, The outer side wall of the stator core is provided with a number of first locking grooves, and the outer side wall of the isolation plate is provided with a number of second locking grooves, each of the second locking grooves being aligned with each of the first locking grooves.

8. The anti-leakage stator structure according to claim 1, characterized in that, The winding coil is provided with three coils, which are equidistant from each other.

9. A brushless motor, characterized in that, The anti-leakage stator structure according to any one of claims 1 to 8 further includes a front end cover, a rear end cover, and a rotor structure. The front end cover is disposed on the end of the stator core away from the housing, the rear end cover is disposed on the end of the housing away from the stator core, and the rotor structure passes through the stator core to be rotatably connected to the front end cover and the rear end cover respectively.

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