Anti-creeping stator and motor
By setting an insulating sheet between the inner wall of the stator core slot of the motor and covering the isolation sheet on the end surface of the stator core, the problem of short circuit or leakage between the stator core is solved, and the safety and life of the motor are improved.
Patent Information
- Application Number
- CN202421176294.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-05-27
AI Technical Summary
The end surface of the stator core of existing motors lacks insulating protection, and the accumulation of toner powder causes short-circuit or leakage of the stator core to the winding, which may burn the motor and shorten the service life.
An insulating sheet is provided between the inner wall of the slot of the stator core and the winding, and the isolation sheet is covered on the end surface of the stator core to ensure insulation between the two and prevent electrical contact caused by accumulation of toner.
Effectively prevent short circuit or leakage between the stator core and the winding, improve the safety of the motor and extend the service life.
Smart Images
Figure CN222563587U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a motor, in particular to an anti-leakage stator. Background Art
[0002] An insulating sheet is provided between the stator winding and the stator core of the existing motor, and the insulating sheet can prevent short circuit and leakage between the stator winding and the inner wall of the stator core. However, due to the friction between the carbon brush and the brush, after long-term use, the carbon brush will wear and produce a large amount of carbon powder, which will fall between the stator winding and the stator core. Although the insulating sheet between the stator winding and the inner wall of the stator core can isolate the carbon powder and prevent short circuit, there is no insulating sheet on the end face of the stator core. When the carbon powder falls to the end face of the stator core and accumulates there, the possibility of short circuit between the end face of the stator core and the stator winding is greatly increased. Once a short circuit or leakage occurs, the motor may be burned out and the service life of the motor is shortened. Utility Model Content
[0003] The utility model aims to provide a stator which can prevent the coil inside the stator from short circuiting or leaking electricity, improve the safety of use, and effectively extend the service life of the motor.
[0004] Another object of the utility model is to provide a motor which can prevent the coil inside the stator from short circuiting or leaking electricity, has high safety in use and long service life.
[0005] In order to achieve the above-mentioned purpose, the leakage-proof stator provided by the utility model includes a stator core, a stator winding, an insulating sheet and a spacer. A slot is provided in the stator core, the stator winding is arranged in the slot, the insulating sheet is arranged on the inner wall of the slot and is located between the inner wall surface of the slot and the stator winding, so as to insulate the stator core from the stator winding; the spacer covers the end face of the stator core, so as to insulate the end face of the stator core from the stator winding.
[0006] Compared with the prior art, the utility model provides an insulating sheet between the inner wall surface of the slot of the stator core and the stator winding, so that the stator core and the stator winding are insulated, so that when carbon powder accumulates between the stator core and the stator winding, electrical contact can occur, thereby avoiding short circuit or leakage between the two. At the same time, by covering the end face of the stator core with an insulating sheet, the end face of the stator core and the stator winding are insulated, so that carbon powder can be prevented from accumulating on the end face of the stator core and electrically contacting the stator winding, thereby further avoiding short circuit or leakage between the stator core and the stator winding, thereby improving the safety of motor use and effectively extending the service life of the motor.
[0007] Preferably, the edge of the isolation sheet is sealed and connected to the edge of the adjacent insulating sheet, so that a gap between the isolation sheet and the insulating sheet can be avoided, thereby effectively preventing carbon powder from entering the end surface or inner wall of the stator core through the gap, thereby further preventing short circuit or leakage between the stator core and the stator winding, and improving the safety of use.
[0008] Specifically, the edge of the isolation sheet is sealed with the edge of the insulating sheet through an insulating tape or insulating glue layer, so that the sealing between the isolation sheet and the insulating sheet can be improved.
[0009] Specifically, the isolation sheet is fixedly connected to the end surface of the stator core through an insulating glue layer.
[0010] A motor comprises a housing, a rotor, a carbon brush, a bracket and an anti-leakage stator. The anti-leakage stator, rotor, bracket and carbon brush are arranged in the housing. The rotor is rotatably arranged on the anti-leakage stator through the bracket. The carbon brush is in sliding electrical contact with the brush of the rotor. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is an exploded structural diagram of the motor of the utility model.
[0012] Figure 2 It is an exploded structural diagram of the anti-leakage stator of the motor of the utility model.
[0013] Figure 3 It is a structural diagram of the leakage-proof stator of the motor of the utility model. DETAILED DESCRIPTION
[0014] In order to explain the technical content, structural features and effects achieved by the present invention in detail, the following is a detailed description in conjunction with the implementation modes and the accompanying drawings.
[0015] like Figures 1 to 3As shown, the motor 100 of the utility model includes a housing (not shown), a rotor 1, a carbon brush 2, a bracket 3 and an anti-leakage stator 4, wherein the anti-leakage stator 4, the rotor 1, the bracket 3 and the carbon brush 2 are arranged in the housing, and the rotor 1 is rotatably arranged on the anti-leakage stator 4 through the bracket 3, and the carbon brush 2 is in sliding electrical contact with the brush 11 of the rotor 1. The anti-leakage stator 4 includes a stator core 41, a stator winding 42, an insulating sheet 43 and a spacer 44. A slot 411 is provided in the stator core 41, and the stator winding 42 is arranged in the slot 411. The insulating sheet 43 is arranged on the inner wall of the slot 411 and is located between the inner wall surface of the slot 411 and the stator winding 42, so as to insulate the stator core 41 from the stator winding 42; the spacer 44 covers the end surface of the stator core 41, so as to insulate the end surface of the stator core 41 from the stator winding 42; the cross-sectional shape of the spacer 44 is the same as the end surface shape of the stator core 41, so that the two can match each other.
[0016] Please see again Figure 2 and Figure 3 , the edge of the isolation sheet 44 is sealed and connected with the edge of the adjacent insulating sheet 43. In this way, a gap can be avoided between the isolation sheet 44 and the insulating sheet 43, thereby effectively preventing carbon powder from entering the end face or inner wall of the stator core 41 through these gaps. Therefore, a short circuit or leakage between the stator core 41 and the stator winding 42 can be further prevented, thereby improving the safety of use. The edge of the isolation sheet 44 is sealed and connected with the edge of the insulating sheet 43 by an insulating tape or insulating glue layer. In this way, the sealing between the isolation sheet 44 and the insulating sheet 43 can be improved. The isolation sheet 44 is fixedly connected to the end face of the stator core 41 by an insulating glue layer.
[0017] Compared with the prior art, the utility model provides an insulating sheet 43 between the inner wall surface of the slot 411 of the stator core 41 and the stator winding 42, so that the stator core 41 and the stator winding 42 are insulated, so that when carbon powder accumulates between the stator core 41 and the stator winding 42, electrical contact can be made, thereby avoiding short circuit or leakage between the two. At the same time, by covering the end face of the stator core 41 with an isolating sheet 44, the end face of the stator core 41 and the stator winding 42 are insulated, so that carbon powder can be prevented from accumulating on the end face of the stator core 41 and electrically contacting the stator winding 42, thereby further avoiding short circuit or leakage between the stator core 41 and the stator winding 42, thereby improving the safety of the motor 100 and effectively extending the service life of the motor 100.
[0018] The structure of the rotor 1 involved in the motor 100 of the present invention is well known to those skilled in the art and will not be described in detail herein.
[0019] The above disclosure is only a preferred example of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention still fall within the scope covered by the present invention.
Claims
1. A stator for preventing leakage, characterized in that: The invention comprises a stator core, a stator winding, an insulating sheet and a spacer. A slot is provided in the stator core, the stator winding is arranged in the slot, the insulating sheet is arranged on the inner wall of the slot and is located between the inner wall surface of the slot and the stator winding, so as to insulate the stator core from the stator winding; the spacer covers the end surface of the stator core, so as to insulate the end surface of the stator core from the stator winding.
2. The anti-leakage stator according to claim 1, characterized in that: The edge of the isolation sheet is sealed and connected to the edge of the adjacent insulation sheet.
3. The anti-leakage stator according to claim 2, characterized in that: The edge of the isolation sheet and the edge of the insulation sheet are sealed and connected via an insulation tape or an insulation glue layer.
4. The anti-leakage stator according to claim 2, characterized in that: The isolation sheet is fixedly connected to the end surface of the stator core via an insulating glue layer.
5. A motor, characterized in that: It comprises a housing, a rotor, a carbon brush, a bracket and the leakage-proof stator according to any one of claims 1 to 4, wherein the leakage-proof stator, rotor, bracket and carbon brush are arranged in the housing, the rotor is rotatably arranged on the leakage-proof stator through the bracket, and the carbon brush is in sliding electrical contact with the brush of the rotor.