Motor winding and circuit thereof

Abstract

The invention relates to the technical field of motors, and discloses a motor winding and a circuit thereof, and the motor winding comprises a stator which comprises a stator core, a stator winding and an insulating support. The number of the insulating supports is two, the insulating supports are respectively buckled at the upper end and the lower end of the stator core and used for supporting and fixing the stator winding, the insulating supports provide mechanical support for the stator winding and ensure good electrical insulation between the stator winding and the stator core, and the stator winding is wound on the stator teeth and the winding teeth in a concentrated winding mode. Insulation paper used for isolating the stator winding and the stator iron core and preventing the stator winding and the stator iron core from being in direct contact to cause short circuit or electrical faults is placed on the inner wall face of a V-shaped notch defined by the stator teeth and the stator yoke, a concentrated winding circuit in a stator series connection mode is adopted, the utilization rate of the winding is improved, copper loss is reduced, and the service life of the motor is prolonged. And the winding structure is simplified, and the risk of winding faults is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of motors, and in particular relates to a motor winding and a circuit thereof. Background Art

[0002] As a device that converts electrical energy into mechanical energy, motors are widely used in industries, transportation, household appliances and other fields. The traditional motor structure mainly consists of two parts: the stator and the rotor. The stator is responsible for generating the magnetic field, and the rotor generates rotational motion under the action of the magnetic field. In order to improve the performance and reliability of the motor, researchers are constantly optimizing and improving the structure of the motor.

[0003] In existing motor technology, the stator is usually composed of a stator core, a stator winding, and insulation materials. The stator winding is wound on the stator core and isolated from the stator core by insulation materials to prevent short circuits and electrical failures. In addition, the stator winding is usually in the form of distributed winding or chain winding, which improves the efficiency and performance of the motor to a certain extent.

[0004] However, the insulation materials in existing motors may not completely prevent direct contact between the stator winding and the stator core, resulting in a higher risk of short circuit or electrical failure. The stator winding in existing motors is prone to damage under the influence of vibration, mechanical stress, etc., affecting the reliability and stability of the motor. In particular, distributed windings are more prone to failure due to their long winding length.

[0005] In view of this, we propose a motor and its winding circuit that use insulating paper and insulating bracket as isolation materials to effectively prevent the stator winding from direct contact with the stator core, improve the insulation performance between the winding and the core, reduce the risk of short circuit and electrical failure, and adopt a concentrated winding form and insulating bracket design to reduce damage to the winding caused by vibration and mechanical stress, thereby improving the reliability and stability of the motor to solve the above problems. Summary of the invention

[0006] The present invention aims to solve the technical problem that the insulating material in the motor in the above-mentioned prior art may not be able to completely prevent direct contact between the stator winding and the stator core, resulting in a higher risk of short circuit or electrical failure, and the motor uses a distributed winding with a longer length, which is more prone to failure.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A motor winding comprises a stator, wherein the stator comprises a stator core, a stator winding and an insulating bracket; two insulating brackets are provided and buckled at the upper and lower ends of the stator core respectively and used to support and fix the stator winding, and the stator winding is wound on the stator core and the insulating bracket; the insulating bracket provides mechanical support for the stator winding and ensures good electrical insulation between the stator winding and the stator core;

[0009] The stator core includes a stator yoke and a plurality of Y-shaped stator teeth arranged at equal intervals along the circumferential direction of the inner surface of the stator yoke; the number of the stator teeth is four;

[0010] The insulating bracket comprises an outer cylindrical shell, winding teeth and an inner cylindrical shell which are fixedly connected in sequence from the outside to the inside, the outer cylindrical shell is located outside the stator core, and the winding teeth and the inner cylindrical shell are arranged at equal distances along the circumferential direction of the outer cylindrical shell and are located above each stator tooth;

[0011] The stator winding is wound on the stator teeth and winding teeth in the form of concentrated winding.

[0012] Preferably, the inner wall surface of the V-shaped notch formed by the stator teeth and the stator yoke is provided with insulating paper for isolating the stator winding and the stator core to prevent the stator winding from directly contacting the stator core and causing a short circuit or electrical failure. As an isolation material, the insulating paper can effectively prevent the stator winding from directly contacting the stator core and avoid short circuits caused by poor contact or wear.

[0013] Preferably, a plurality of buckle posts are arranged at intervals around the circumference of the outer cylindrical shell on one side of the outer cylindrical shell away from the winding teeth and the inner cylindrical shell, and the buckle posts are buckled with the buckle grooves on the stator yoke. The buckle post buckling design makes the assembly of the stator assembly faster and more convenient.

[0014] A winding circuit for a motor winding, wherein the stator winding adopts concentrated winding, the concentrated winding adopts a series mode winding circuit, and the rotor is connected in parallel at the carbon brush. The series mode winding circuit can improve the utilization rate of the winding and reduce copper loss, because the total length of the winding is relatively short, thereby reducing power loss and improving the operating efficiency of the motor.

[0015] Preferably, the two terminals on the series stator winding are connected to a green wire and a red wire respectively, a white wire and a black wire are led out from the carbon brush, the white wire and the black wire are used as brake wires, and the black wire and the red wire are connected to the power supply. By using the white wire and the black wire as brake wires, the brake function of the motor can be flexibly controlled.

[0016] Preferably, the white wire and the green wire are directly short-circuited or connected via a micro switch as a power-off protection for the structure.

[0017] Direct short circuit can simplify circuit design. The micro switch can be used as a safety switch. When an abnormal situation is detected (such as overheating, overload, the running appliance is suddenly taken away, etc.), it can quickly disconnect the circuit to protect the motor from damage and protect the user from injury.

[0018] Compared with the prior art, the technical effects and advantages of the present invention are:

[0019] The motor winding and its winding circuit are based on electromagnetic induction. An alternating magnetic field is generated by passing an alternating current through the stator winding. The optimization of the stator teeth and winding form allows the magnetic field to be concentrated on the stator teeth, thereby enhancing the magnetic field effect. The rotor is acted upon by force under the action of the magnetic field, generating a rotational motion and realizing energy conversion. This design improves the efficiency and stability of the motor operation, allowing the motor to output power efficiently.

[0020] The design of the motor winding and the insulating bracket on the winding circuit provides additional mechanical support and electrical insulation for the stator winding, reducing the risk of short circuit and electrical failure, and greatly improving the safety and reliability of the motor. Secondly, the optimization of the stator teeth and winding form helps to improve the magnetic field efficiency, so that the motor can generate a stronger magnetic field at the same current, increase the output torque, and thus improve the overall efficiency and performance of the motor.

[0021] The motor winding and its winding circuit adopt a concentrated winding circuit in series mode, which not only improves the utilization rate of the winding and reduces copper loss, but also simplifies the winding structure and reduces the risk of winding failure. The flexible design of white and black wires as brake lines enables the motor to respond quickly to the stop signal and improves the safety performance of the system. At the same time, power-off protection is achieved by direct short circuit or micro switch, which simplifies the circuit design, increases the reliability of the motor system and facilitates maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the stator of the present invention;

[0023] Figure 2 is an exploded view of the stator of the present invention;

[0024] Figure 3 This is a first viewing angle diagram of the insulating bracket of the present invention.

[0025] Figure 4 A second viewing angle diagram of the insulating bracket of the present invention;

[0026] Figure 5 It is a structural schematic diagram of the stator core of the present invention;

[0027] Figure 6 This is a schematic diagram of the structure of the insulating paper of the present invention;

[0028] Figure 7 The present invention is a circuit diagram of the motor winding;

[0029] Figure 8 This is a motor winding circuit diagram for an environment or operating mode where braking is not required in the present invention.

[0030] In the figure: 1. stator; 11. stator core; 1101. stator yoke; 1102. stator teeth; 1103. V-shaped notch; 1104. buckle groove; 12. stator winding; 1201. terminal; 13. insulating bracket; 1301. outer cylindrical shell; 1302. winding teeth; 1303. inner cylindrical shell; 1304. buckle column; 14. insulating paper. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] like Figure 1-6 As shown, a motor winding includes a stator 1, the stator 1 includes a stator core 11, a stator winding 12, and an insulating bracket 13; two insulating brackets 13 are provided and are buckled at the upper and lower ends of the stator core 11 respectively and are used to support and fix the stator winding 12, the stator winding 12 is wound on the stator core 11 and the insulating bracket 13; the insulating bracket 13 provides mechanical support for the stator winding 12 and ensures good electrical insulation between the stator winding 12 and the stator core 11;

[0033] The stator core 11 includes a stator yoke 1101 and a plurality of Y-shaped stator teeth 1102 arranged at equal intervals along the circumferential direction of the inner side surface of the stator yoke 1101; the number of stator teeth 1102 is four; the inner wall surface of the V-shaped notch 1103 surrounded by the stator teeth 1102 and the stator yoke 1101 is provided with insulating paper 14 for isolating the stator winding 12 and the stator core 11 to prevent the stator winding 12 from directly contacting the stator core 11 and causing short circuit or electrical failure. As an isolation material, the insulating paper 14 can effectively prevent the stator winding 12 from directly contacting the stator core 11 and avoid short circuit caused by poor contact or wear. The insulating paper 14 provides an additional electrical insulation layer, improves the insulation performance between the winding and the core, and thus increases the safety and reliability of the motor. By reducing the occurrence of short circuits and electrical failures, the life of the motor winding can be extended and the frequency of maintenance and replacement can be reduced. The insulating paper 14 helps to maintain the performance of the stator winding 12 stable and prevent the motor performance from being degraded due to winding damage.

[0034] The insulating support 13 includes an outer cylindrical shell 1301, a winding tooth 1302 and an inner cylindrical shell 1303 which are fixedly connected in sequence from the outside to the inside. The outer cylindrical shell 1301 is located on the outside of the stator core 11, and the winding teeth 1302 and the inner cylindrical shell 1303 are arranged at equal distances along the circumferential direction of the outer cylindrical shell 1301 and are located above each stator tooth 1102.

[0035] The stator winding 12 is wound around the stator teeth 1102 and the winding teeth 1302 in the form of concentrated winding.

[0036] A plurality of buckle columns 1304 are arranged at intervals around the circumferential direction of the outer cylindrical shell 1301 on one side of the outer cylindrical shell 1301 away from the winding teeth 1302 and the inner cylindrical shell 1303, and the buckle columns 1304 are buckled with the buckle grooves 1104 on the stator yoke 1101. The buckle columns 1304 are buckled with the buckle grooves 1104 on the stator yoke 1101, which enhances the mechanical stability of the stator structure and reduces vibration and noise during operation. The buckle design of the buckle columns 1304 makes the assembly of the stator assembly faster and more convenient, improves production efficiency, and reduces assembly costs. The buckle structure provides a reliable fixing method, ensuring that the stator assembly will not be displaced or deformed during operation, thereby ensuring the normal operation of the motor.

[0037] The motor is based on electromagnetic induction. When an alternating current passes through the stator winding 12, an alternating magnetic field is generated around the stator winding 12. Since the stator winding 12 is a concentrated winding, this winding method can concentrate the magnetic field on the stator teeth 1102, thereby enhancing the magnetic field effect. The movement of the rotor is affected by the magnetic field generated by the stator. According to the Lorentz force law, the conductor in the rotor is acted upon by a force in the magnetic field, causing the rotor to rotate.

[0038] Specifically, the Y-shaped stator teeth 1102 on the stator core 11 and the winding teeth 1302 on the insulating bracket 13 together constitute a concentrated winding structure. This design is conducive to the embedding and fixation of the stator winding 12, and also makes the distribution of the stator winding 12 on the stator teeth 1102 more uniform, which helps to improve the efficiency and stability of the motor operation.

[0039] The design of the insulating bracket 13 provides additional mechanical support for the stator winding 12, helps maintain the stability and durability of the stator winding 12, and reduces winding damage due to vibration or mechanical stress. The insulating bracket 13 ensures good electrical insulation between the stator winding 12 and the stator core 11, reduces the risk of short circuits and electrical failures, and thus improves the safety and reliability of the motor. The design of the stator teeth 1102 and the optimization of the winding form help to improve the magnetic field efficiency, making the power output of the motor more efficient, thereby improving the overall efficiency and performance of the motor. The structure of the concentrated winding and the design of the insulating bracket 13 make the manufacture and maintenance of the motor easier, reducing production costs and maintenance difficulties.

[0040] like Figure 7 As shown, a winding circuit for motor windings, the stator winding 12 adopts concentrated winding, the concentrated winding adopts a series mode winding circuit, and the rotor is connected in parallel at the carbon brush.

[0041] The series mode winding circuit can improve the utilization rate of the winding and reduce copper loss, because the total length of the winding is relatively short, thereby reducing power loss and improving the operating efficiency of the motor. The series mode can simplify the structure of the winding and reduce the connection points, thereby reducing the risk of winding failure. The concentrated winding design helps to concentrate the magnetic field, so that the motor can generate a stronger magnetic field at the same current, thereby improving the output torque of the motor.

[0042] Specifically, two terminals 1201 on the series-connected stator winding 12 are connected to a green wire and a red wire respectively, a white wire and a black wire are led out from the carbon brush, the white wire and the black wire are used as brake wires, and the black wire and the red wire are connected to the power supply.

[0043] By using the white and black wires as brake wires, the motor's brake function can be flexibly controlled, allowing the motor to quickly respond to stop signals. When the motor needs to be stopped urgently, the power supply can be quickly cut off by controlling the on and off of the brake wires, improving the safety performance of the system.

[0044] Specifically, the white wire and the green wire are directly short-circuited or connected through a micro switch as a power-off protection for the structure.

[0045] Specific reference for environments or operating modes that do not require braking Figure 8 Wiring diagram.

[0046] Direct shorting can simplify circuit design, reduce unnecessary components and connections, and thus reduce system complexity. Simplified circuit design helps reduce motor manufacturing costs.

[0047] Micro switches can be used as a safety switch. When abnormal conditions are detected (such as overheating, overload, etc.), they can quickly disconnect the circuit to protect the motor from damage. Micro switches usually have high reliability and long life, which can improve the reliability of the entire motor system. When the motor needs to be inspected or maintained, the micro switch provides a convenient operating point for troubleshooting and maintenance work.

[0048] The motor winding and its winding circuit adopt the design of concentrated winding and insulating bracket 13, which enhances the mechanical stability and electrical insulation performance, and improves the efficiency and reliability. The optimization of the stator teeth 1102 and the winding form enhances the magnetic field effect and improves the output torque. The winding circuit in series mode simplifies the structure, reduces the risk of failure, and realizes the rapid shutdown function through the brake line. The power-off protection measures improve the safety and maintenance convenience of the system.

[0049] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A motor winding, comprising a stator (1), characterized in that: The stator (1) comprises a stator core (11), a stator winding (12), and an insulating bracket (13); two insulating brackets (13) are provided and are respectively buckled at the upper and lower ends of the stator core (11) and used to support and fix the stator winding (12); the stator winding (12) is wound on the stator core (11) and the insulating bracket (13); The stator core (11) comprises a stator yoke (1101) and a plurality of Y-shaped stator teeth (1102) arranged at equal intervals along the circumferential direction of the inner side surface of the stator yoke (1101); the number of the stator teeth (1102) is four; The insulating support (13) comprises an outer cylindrical shell (1301), winding teeth (1302) and an inner cylindrical shell (1303) which are fixedly connected in sequence from the outside to the inside, the outer cylindrical shell (1301) is located outside the stator core (11), and the winding teeth (1302) and the inner cylindrical shell (1303) are arranged at equal intervals along the circumferential direction of the outer cylindrical shell (1301) and are located above each stator tooth (1102); The stator winding (12) is wound on the stator teeth (1102) and the winding teeth (1302) in the form of concentrated winding.

2. A motor winding according to claim 1, characterized in that: An insulating paper (14) is placed on the inner wall surface of the V-shaped notch (1103) formed by the stator teeth (1102) and the stator yoke (1101) to isolate the stator winding (12) and the stator core (11) to prevent the stator winding (12) from directly contacting the stator core (11) and causing a short circuit or electrical fault.

3. A motor winding according to claim 2, characterized in that: A plurality of buckle columns (1304) are arranged at intervals in the circumferential direction of the outer cylindrical shell (1301) on one side of the outer cylindrical shell (1301) away from the winding teeth (1302) and the inner cylindrical shell (1303), and the buckle columns (1304) are matched and buckled with buckle grooves (1104) on the stator yoke (1101).

4. A winding circuit for a motor winding according to any one of claims 1 to 3, characterized in that: The stator winding (12) adopts concentrated winding, which adopts a series mode winding circuit, and the rotor is connected in parallel at the carbon brush.

5. A winding circuit according to claim 4, characterized in that: The two terminals (1201) on the series-connected stator winding (12) are connected to a green wire and a red wire respectively, and a white wire and a black wire are led out from the carbon brush. The white wire and the black wire are used as brake wires, and the black wire and the red wire are connected to the power supply.

6. A winding circuit according to claim 5, characterized in that: The white wire and the green wire are short-circuited directly or through a micro switch as a power-off protection for the structure.

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