Motor stator with thermal protector

Abstract

The utility model belongs to the technical field of motors, and particularly refers to a motor stator with a thermal protector; the utility model comprises stator punching sheets, the stator punching sheets are stacked to form a stator core, a winding is wound on the stator core, the winding comprises a winding main and auxiliary common line, a winding main line and a winding auxiliary line, the winding main line is connected to a first power line, the winding auxiliary line is connected to a second power line, and also comprises a thermal protector, the thermal protector is contacted and connected with the winding, the thermal protector comprises a first thermal protector lead and a second thermal protector lead, and the first thermal protector lead is connected to the winding main and auxiliary common line; the utility model is connected to the winding of the motor stator with a thermal protector, when the winding temperature reaches a certain temperature, the thermal protector is disconnected in time, the motor is powered off, thereby playing a role in protecting the motor.

Description

Technical field:

[0001] The utility model belongs to the technical field of motors, in particular to a motor stator with a thermal protector. Background technology:

[0002] A motor is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction. Its main function is to generate driving torque as a power source for electrical appliances or various machines. During the use of the motor, its stator and rotor are constantly rubbing against each other, which can easily lead to overheating. If measures are not taken in time to suppress the temperature increase, then when the overheating situation gradually intensifies, the motor winding will be burned, causing serious damage to the motor or even scrapping, which will bring a lot of inconvenience to enterprises and maintenance personnel. Summary of the invention:

[0003] The utility model aims to provide a motor stator with a thermal protector which can automatically cut off the power supply of the motor when the temperature rise of the motor reaches a certain temperature.

[0004] The utility model is achieved in this way:

[0005] A motor stator with a thermal protector comprises a stator punching sheet, which is stacked to form a stator core, on which a winding is wound, the winding comprising a main and secondary common line of the winding, a main line of the winding and a secondary line of the winding, the main line of the winding being connected to a first power line, the secondary line of the winding being connected to a second power line, and a thermal protector being contacted and connected with the winding, the thermal protector comprising a first thermal protector lead and a second thermal protector lead, the first thermal protector lead being connected to the main and secondary common line of the winding.

[0006] In the above-mentioned motor stator with a thermal protector, a plurality of winding slots are arranged on the stator core, and an insulating frame is arranged between the winding slots and the winding.

[0007] In the above-mentioned motor stator with a thermal protector, the insulating frame is arranged to penetrate the winding slot, and two ends of the insulating frame extend beyond two ends of the winding slot.

[0008] In the above-mentioned motor stator with a thermal protector, the portion of the winding located outside the two ends of the stator core and the first power line, the second power line, the first thermal protector lead, and the second thermal protector lead are bound and fixed by heat shrinkable insulating tape or binding rope.

[0009] In the above-mentioned motor stator with a thermal protector, the first power line, the second power line, the first thermal protector lead and the second thermal protector lead are all sheathed with insulating sleeves.

[0010] In the above-mentioned motor stator with a thermal protector, an insulating rubber sleeve is sleeved on the thermal protector.

[0011] In the above-mentioned motor stator with a thermal protector, the stator core is a block structure, including a plurality of stator core units, one end of the stator core unit is provided with a latching protrusion and the other end is provided with a latching groove, and the plurality of stator core units are connected end to end in sequence through the latching protrusion arranged in the latching groove.

[0012] The outstanding advantages of the utility model compared with the prior art are:

[0013] 1. The utility model has a thermal protector connected to the winding of the motor stator. When the winding temperature reaches a certain temperature, the thermal protector is disconnected in time and the motor is powered off, thereby protecting the motor.

[0014] 2. The utility model uses heat shrinkable insulating tape or binding rope to bundle the winding, the first power line, the second power line, the first thermal protector lead, and the second thermal protector lead together, which can ensure that the thermal protector is always attached to the winding and improve the temperature sensing accuracy. Description of the drawings:

[0015] Figure 1 It is a three-dimensional schematic diagram of the utility model.

[0016] In the figure: 1. thermal protector; 2. stator core; 3. winding; 4. first power line; 5. second power line; 6. first thermal protector lead; 7. second thermal protector lead; 8. insulating frame; 9. binding rope; 10. insulating rubber sleeve. Specific implementation method:

[0017] The present invention is further described below with reference to specific embodiments. Figure 1 :

[0018] The utility model provides a motor stator with a thermal protector, comprising a stator punching sheet and a thermal protector 1. The stator punching sheets are stacked to form a stator core 2. A winding 3 is wound on the stator core 1. The winding 3 is formed with a winding main and auxiliary common line, a winding main line and a winding auxiliary line. The winding main line is connected to a first power line 4, and the winding auxiliary line is connected to a second power line 5. The thermal protector 1 is in contact with the winding 3. The thermal protector 1 comprises a first thermal protector lead 6 and a second thermal protector lead 7. The first thermal protector lead 6 is connected to the winding main and auxiliary common lines.

[0019] The utility model arranges a thermal protector on the motor stator. In this embodiment, when the temperature of the winding 3 rises to 130° C., the thermal protector 1 is disconnected in time and the motor is powered off, thereby protecting the motor.

[0020] It should be noted that the stator core 2 of the utility model can be an integral type or a block type. The integral type is formed by stacking annular stator punchings. The block type is to divide the stator core 2 into a plurality of stator core units, which can improve the utilization rate of the punchings. In this embodiment, there are four stator core units. A cam is provided at one end of each stator core unit and a slot is provided at the other end. Several stator core units are connected end to end in sequence through the cam arranged in the slot. Of course, they can also be connected by rivets, welding, etc.

[0021] Furthermore, the stator core 2 is provided with a plurality of winding slots, and an insulating frame 8 is provided between the winding slots and the winding 3. The insulating frame 8 wraps around the winding 3 and can separate adjacent windings 3. Specifically, the insulating frame 8 is provided through the winding slots, and both ends of the insulating frame 8 extend beyond both ends of the winding slots.

[0022] In order to keep the relative positions of the winding 3, the first power line 4, the second power line 5, the first thermal protector lead 6, and the second thermal protector lead 7 unchanged, the portion of the winding 3 outside the two ends of the stator core 2 and the first power line 4, the second power line 5, the first thermal protector lead 6, and the second thermal protector lead 7 are bound and fixed by heat-shrinkable insulating tape or binding rope 9, which can ensure that the end of the winding 3 is a relatively solid whole after being dipped in paint and dried. In addition, this can also ensure that the thermal protector 1 is always in contact with the winding 3. It should be noted that when bundling, a certain tension should be ensured.

[0023] The utility model also has insulating sleeves on the outside of the first power line 4, the second power line 5, the first thermal protector lead 6 and the second thermal protector lead 7, and an insulating rubber sleeve 10 is installed on the thermal protector 1, which can play the role of insulation and protection. The charged body is enclosed by the insulating material to isolate the charged body or conductors with different potentials, so that the current can flow along a certain path.

[0024] The above embodiment is only one of the preferred embodiments of the present utility model, and is not intended to limit the scope of implementation of the present utility model. Therefore, any equivalent changes made based on the shape, structure, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A motor stator with a thermal protector, comprising stator punching sheets, the stator punching sheets are stacked to form a stator core (2), a winding (3) is wound on the stator core (2), the winding (3) is formed with a main and auxiliary common line of the winding, a main line of the winding and an auxiliary line of the winding, the main line of the winding is connected to a first power line (4), and the auxiliary line of the winding is connected to a second power line (5), characterized in that: It also includes a thermal protector (1), which is in contact with the winding (3), and the thermal protector (1) includes a first thermal protector lead (6) and a second thermal protector lead (7), and the first thermal protector lead (6) is connected to the main and auxiliary common lines of the winding.

2. The motor stator with a thermal protector according to claim 1, characterized in that: The stator core (2) is provided with a plurality of winding slots, and an insulating frame (8) is provided between the winding slots and the winding (3).

3. The motor stator with a thermal protector according to claim 2, characterized in that: The insulating frame (8) is arranged to penetrate the winding slot, and two ends of the insulating frame (8) extend outside the two ends of the winding slot.

4. The motor stator with a thermal protector according to claim 1, characterized in that: The portion of the winding (3) located outside the two ends of the stator core (2) and the first power line (4), the second power line (5), the first thermal protector lead (6), and the second thermal protector lead (7) are bound and fixed by means of a heat-shrinkable insulating binding tape or a binding rope (9).

5. A motor stator with a thermal protector according to claim 1 or 4, characterized in that: The first power line (4), the second power line (5), the first thermal protector lead (6) and the second thermal protector lead (7) are all sheathed with insulating sleeves.

6. The motor stator with a thermal protector according to claim 1, characterized in that: The thermal protector (1) is sleeved with an insulating rubber sleeve (10).

7. The motor stator with a thermal protector according to claim 1, characterized in that: The stator core (2) is a block structure, comprising a plurality of stator core units, one end of the stator core unit is provided with a clamping protrusion, and the other end is provided with a clamping groove, and the plurality of stator core units are connected end to end in sequence by being arranged in the clamping groove with the clamping protrusion.

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