Brushless motor stator plastic coating structure

Abstract

The utility model discloses a brushless motor stator plastic-coated structure which comprises an insulating plastic-coated body and a stator core. The insulating plastic-coated body is of an annular structure, a plurality of T-shaped winding columns are arranged on the inner circumferential side wall of the insulating plastic-coated body in an inward protruding mode, the T-shaped winding columns are sequentially and evenly arranged at intervals in the circumferential direction, and a sliding block is arranged on the portion, between every two adjacent T-shaped winding columns, of the inner circumferential side wall of the insulating plastic-coated body; the upper and lower ends of the slide block respectively extend out of the upper and lower surfaces of the insulating plastic-coated body. The stator iron core comprises an outer stator iron core ring and a plurality of inner stator iron core pieces, the outer stator iron core ring wraps the peripheral side wall of the insulating plastic-coated body, and the inner stator iron core pieces are arranged on the side faces, away from the insulating plastic-coated body, of the T-shaped wrapping posts; the two opposite sides of the upper end and the two opposite sides of the lower end of the T-shaped wrapping post are each provided with a first step, and the first steps extend in the radial direction. The purpose of preventing burrs and burrs can be achieved, and a certain performance of preventing winding from being cut off is achieved.

Description

Technical Field

[0001] The utility model relates to the technology of the stator of a brushless motor, in particular to a plastic-coated structure of the stator of a brushless motor. Background Art

[0002] In the existing plastic-encapsulated motor, the stator core and the winding adopt an insulation form of an insulating frame, that is, an insulating material is injection-molded into a frame form, and then the frame is sleeved on the core to form a plastic-coated structure of the stator core, and then the winding is wound on the frame forming the plastic-coated structure of the stator core.

[0003] The plastic-coated structure of the stator core on the market usually includes an insulating plastic-coated body and a stator core. The insulating plastic-coated body is in a ring structure. A plurality of T-shaped winding posts protrude from the inner peripheral side wall of the insulating plastic-coated body towards the center of the circle. The plurality of T-shaped winding posts are arranged at equal intervals in the circumferential direction in sequence. The stator core includes an outer stator core ring and a plurality of inner stator iron cores. The outer stator core ring is coated on the outer peripheral side wall of the insulating plastic-coated body. The inner stator iron cores are arranged on the side of the T-shaped winding posts away from the insulating plastic-coated body. Although the winding can be wound on the T-shaped winding posts, since the two winding surfaces of the T-shaped winding posts are smoothly transitioned and the included angle between the two is a right angle, it is easy to appear burrs and flash, and it is difficult to achieve the purpose of preventing burrs and flash, and the winding may be cut off during winding.

[0004] Therefore, it is necessary to research a new technology to solve the above problems. Summary of the Utility Model

[0005] In view of this, in view of the deficiencies of the existing technology, the main purpose of the utility model is to provide a plastic-coated structure of the stator of a brushless motor, which can achieve the purpose of preventing burrs and flash and has a certain performance of preventing the winding from being cut off.

[0006] To achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A plastic-coated structure of the stator of a brushless motor includes an insulating plastic-coated body and a stator core; the insulating plastic-coated body is in a ring structure. A plurality of T-shaped winding posts protrude from the inner peripheral side wall of the insulating plastic-coated body towards the inside. The plurality of T-shaped winding posts are arranged at equal intervals in the circumferential direction in sequence. A slider is arranged on the inner peripheral side wall of the insulating plastic-coated body between two adjacent T-shaped winding posts. The upper and lower ends of the slider respectively extend out of the upper and lower surfaces of the insulating plastic-coated body; the stator core includes an outer stator core ring and a plurality of inner stator iron cores. The outer stator core ring is coated on the outer peripheral side wall of the insulating plastic-coated body. The inner stator iron cores are arranged on the side of the T-shaped winding posts away from the insulating plastic-coated body; two pairs of sides at the upper end and two pairs of sides at the lower end of the T-shaped winding posts are both provided with first steps, and the first steps extend in the radial direction.

[0008] As a preferred solution, the T-shaped winding column includes a winding main body portion, an arc-shaped plate portion and two extending plate portions. One end of the winding main body portion is integrally connected to the inner peripheral side wall of the insulating plastic coating body. The arc-shaped plate portion is integrally connected to the end of the winding main body portion away from the insulating plastic coating body. The arc-shaped plate portion extends in the circumferential direction and is recessed inward. The two ends of the arc-shaped plate portion in the circumferential direction respectively protrude outside the two ends of the winding main body portion. The two extending plate portions are respectively integrally connected to the upper and lower ends of the arc-shaped plate portion. The inner stator iron core chip is arc-shaped and is arranged on the inner side surface of the arc-shaped plate portion.

[0009] As a preferred solution, the two extending plate portions respectively protrude outside the upper and lower surfaces of the insulating plastic coating body. The extending plate portion extends in the circumferential direction and is recessed inward.

[0010] As a preferred solution, the first steps are arranged on the two pairs of sides at the upper end and the two pairs of sides at the lower end of the winding main body portion. The second steps are arranged at the upper and lower ends of the outer side surface of the arc-shaped plate portion. The second steps extend in the circumferential direction. The second steps are connected to the corresponding first steps.

[0011] As a preferred solution, the third steps are arranged at the upper and lower ends of the inner peripheral side wall of the insulating plastic coating body. The third steps extend in the circumferential direction. The second steps are connected to the corresponding third steps.

[0012] As a preferred solution, there are nine T-shaped winding columns, and correspondingly, there are nine sliders.

[0013] As a preferred solution, a plurality of pin convex portions protrude from the lower surface of the insulating plastic coating body. The plurality of pin convex portions are arranged at equal intervals in sequence in the circumferential direction. The pin convex portion is provided with a pin hole. A pin is installed in the pin hole. The lower end of the pin extends downward outside the lower end of the slider.

[0014] As a preferred solution, the pin convex portion is located on one side of the corresponding T-shaped winding column close to the insulating plastic coating body. A partition plate protrudes from the lower surface of the insulating plastic coating body between the pin convex portion and the corresponding T-shaped winding column.

[0015] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical scheme that it is mainly achieved by arranging first steps on both opposite sides of the upper end and both opposite sides of the lower end of the T-shaped winding column, so that the first steps extend in the radial direction. In this way, the purpose of preventing burrs and burrs can be achieved on the T-shaped winding column, and it has a certain performance of preventing winding cuts; secondly, the combined design of the pin and the slider is more conducive to accurate positioning and assembly with other structural components of the motor; and the combined design of the first step, the second step and the third step can enhance the overall anti-burr and anti-burr effect, and can further prevent winding cuts.

[0016] In order to more clearly illustrate the structural features, technical means and specific purposes and functions achieved by the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0018] Figure 2 This is a three-dimensional schematic diagram of the overall structure of an embodiment of the present utility model from another angle;

[0019] Figure 3 It is a top view of an embodiment of the present utility model;

[0020] Figure 4 It is a partial structural diagram of an embodiment of the present utility model.

[0021] Description of the accompanying drawings:

[0022] 10. Insulation plastic body 20. T-shaped winding column

[0023] 21. Winding body 22. Arc plate

[0024] 23. Extension plate 30. Slider

[0025] 40. Pin convex portion 41. Pin

[0026] 50, partition 60, bump

[0027] 70, outer stator core ring 80, inner stator core sheet

[0028] 101. First step 102. Second step

[0029] 103. The third step. DETAILED DESCRIPTION

[0030] Please refer to Figures 1 to 4As shown, it shows the specific structure of the embodiment of the present utility model.

[0031] A brushless motor stator plastic coating structure includes an insulating plastic coating body 10 and a stator core; the insulating plastic coating body 10 is in a ring structure, and several T-shaped winding posts 20 are convexly provided on the inner peripheral side wall of the insulating plastic coating body 10. The several T-shaped winding posts 20 are arranged at equal intervals in the circumferential direction in sequence. A slider 30 is provided on the inner peripheral side wall of the insulating plastic coating body 10 between two adjacent T-shaped winding posts 20. The slider 30 is in a T-shaped structure, and the upper and lower ends of the slider 30 respectively extend out of the upper and lower surfaces of the insulating plastic coating body 10; in this embodiment, nine T-shaped winding posts 20 are provided, and correspondingly, nine sliders 30 are provided.

[0032] Several pin convex parts 40 are convexly provided on the lower surface of the insulating plastic coating body 10. The several pin convex parts 40 are arranged at equal intervals in the circumferential direction in sequence. The pin convex parts 40 are provided with pin holes, and pins 41 are installed in the pin holes. The lower ends of the pins 41 extend downward out of the lower ends of the sliders 30; thus, through the combined design of the pins 41 and the sliders 30, it is more beneficial for accurate positioning and assembly with other structural components of the motor.

[0033] The pin convex parts 40 are located on the side of the corresponding T-shaped winding posts 20 close to the insulating plastic coating body 10. A partition 50 is integrally convexly provided on the lower surface of the insulating plastic coating body 10 between the pin convex parts 40 and the corresponding T-shaped winding posts 20. Four pin convex parts 40 are provided, and correspondingly, four pins 41 and four partitions 50 are provided. On the side of the lower surface of the T-shaped winding posts 20 that are not correspondingly provided with the pin convex parts 40 and close to the insulating plastic coating body 10, a convex block 60 is convexly provided downward. Here, through the convex block 60, it is better for assembly positioning with other structural components of the motor.

[0034] The stator core includes an outer stator core ring 70 and several inner stator iron cores 80. The outer stator core ring 70 is coated on the outer peripheral side wall of the insulating plastic coating body 10. The inner stator iron cores 80 are arranged on the side of the T-shaped winding posts 20 far from the insulating plastic coating body 10; on the two pairs of sides at the upper end and the two pairs of sides at the lower end of the T-shaped winding posts 20, first steps 101 are provided. The first steps 101 extend in the radial direction; thus, through the setting of the first steps 101, the purpose of preventing burrs and flash can be achieved on the T-shaped winding posts 20, and it has a certain performance of preventing the winding from being cut.

[0035] The T-shaped winding post 20 includes a winding main body portion 21, an arc plate portion 22, and two extension plate portions 23. One end of the winding main body portion 21 is integrally connected to the inner peripheral side wall of the insulating plastic coating body 10. The arc plate portion 22 is integrally connected to the end of the winding main body portion 21 away from the insulating plastic coating body 10. The arc plate portion 22 extends in the circumferential direction and is recessed inward. The two ends of the arc plate portion 22 in the circumferential direction respectively extend out of the two ends of the winding main body portion 21. The two extension plate portions 23 are respectively integrally connected to the upper and lower ends of the arc plate portion 22. The inner stator iron core chip 80 is arc-shaped and is arranged on the inner side surface of the arc plate portion 22. The two extension plate portions 23 respectively extend out of the upper and lower surfaces of the insulating plastic coating body 10. The extension plate portion 23 extends in the circumferential direction and is recessed inward. The convex block 60 is integrally arranged on one side of the lower surface of the winding main body portion 21 close to the insulating plastic coating body 10.

[0036] On both pairs of sides at the upper end and both pairs of sides at the lower end of the winding main body portion 21, the first steps 101 are provided. At the upper and lower ends of the outer side surface of the arc plate portion 22, second steps 102 are provided. The second steps 102 extend in the circumferential direction, and the second steps 102 are connected to the corresponding first steps 101. Also, at the upper and lower ends of the inner peripheral side wall of the insulating plastic coating body 10, third steps 103 are provided. The third steps 103 extend in the circumferential direction, and the second steps 102 are connected to the corresponding third steps 103. In this way, through the combined design of the first steps 101 with the second steps 102 and the third steps 103, the overall burr-proof and flash-proof effect can be improved, and the winding can be further prevented from being cut off.

[0037] In summary, the design focus of the present utility model is that mainly by providing the first steps on both pairs of sides at the upper end and both pairs of sides at the lower end of the T-shaped winding post, and making the first steps extend in the radial direction. In this way, the purpose of burr-proof and flash-proof can be achieved on the T-shaped winding post, and it has a certain performance of preventing the winding from being cut off. Secondly, through the combined design of the insertion pins and the sliders, it is more beneficial for accurate positioning and assembly with other structural components of the motor. Also, through the combined design of the first steps with the second steps and the third steps, the overall burr-proof and flash-proof effect can be improved, and the winding can be further prevented from being cut off.

[0038] The above description is only a preferred embodiment of the present utility model, and does not impose any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes, and decorations made to the above embodiments according to the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A plastic-coated structure for a brushless motor stator, comprising an insulating plastic-coated body and a stator core; characterized in that: The insulating plastic coating is in an annular structure. A plurality of T-shaped winding columns protrude inward from the inner peripheral side wall of the insulating plastic coating. The plurality of T-shaped winding columns are arranged at equal intervals in sequence along the circumferential direction. A slider is arranged on the inner peripheral side wall of the insulating plastic coating between two adjacent T-shaped winding columns. The upper and lower ends of the slider respectively extend out of the upper and lower surfaces of the insulating plastic coating. The stator core includes an outer stator core ring and a plurality of inner stator iron cores. The outer stator core ring is coated on the outer peripheral side wall of the insulating plastic coating. The inner stator iron cores are arranged on the side of the T-shaped winding columns away from the insulating plastic coating. First steps are arranged on two pairs of sides at the upper end and two pairs of sides at the lower end of the T-shaped winding columns. The first steps extend in the radial direction.

2. The plastic coating structure of the brushless motor stator according to claim 1, characterized in that: The T-shaped winding column includes a winding main body part, an arc-shaped plate part and two extension plate parts. One end of the winding main body part is integrally connected to the inner peripheral side wall of the insulating plastic coating. The arc-shaped plate part is integrally connected to the end of the winding main body part away from the insulating plastic coating. The arc-shaped plate part extends along the circumferential direction and is recessed inward. The two ends of the arc-shaped plate part in the circumferential direction respectively extend out of the two ends of the winding main body part. The two extension plate parts are respectively integrally connected to the upper and lower ends of the arc-shaped plate part. The inner stator iron cores are arc-shaped and are arranged on the inner side surface of the arc-shaped plate part.

3. The plastic-coated structure of the brushless motor stator according to claim 2, characterized in that: The two extension plate parts respectively extend out of the upper and lower surfaces of the insulating plastic coating. The extension plate parts extend along the circumferential direction and are recessed inward.

4. The plastic-coated structure of the brushless motor stator according to claim 2, wherein: First steps are arranged on two pairs of sides at the upper end and two pairs of sides at the lower end of the winding main body part. Second steps are arranged at the upper and lower ends of the outer side surface of the arc-shaped plate part. The second steps extend along the circumferential direction. The second steps are connected to the corresponding first steps.

5. The plastic-coated structure of the brushless motor stator according to claim 4, characterized in that: Third steps are arranged at the upper and lower ends of the inner peripheral side wall of the insulating plastic coating. The third steps extend along the circumferential direction. The second steps are connected to the corresponding third steps.

6. The plastic coating structure of the brushless motor stator according to claim 1, wherein: There are nine T-shaped winding columns. Correspondingly, there are nine sliders.

7. The plastic-coated structure of the brushless motor stator according to claim 1, wherein: A plurality of pin convex parts protrude from the lower surface of the insulating plastic coating. The plurality of pin convex parts are arranged at equal intervals in sequence along the circumferential direction. The pin convex parts are provided with pin holes. Pins are installed in the pin holes. The lower ends of the pins extend downward out of the lower ends of the sliders.

8. The plastic coating structure of the brushless motor stator according to claim 7, characterized in that: The pin convex parts are located on one side of the corresponding T-shaped winding columns close to the insulating plastic coating. A partition plate protrudes from the lower surface of the insulating plastic coating between the pin convex parts and the corresponding T-shaped winding columns.

Images