Motor with convex key stator punching sheet

Abstract

The utility model provides a motor with convex key stator punching sheets, which belongs to the technical field of motors and comprises an outer shell, a stator core and a rotor. The stator core is mounted on the inner wall of the outer shell; the rotor is inserted in the middle of the stator core; according to the utility model, the surface of the stator punching sheet is provided with the stator groove, the stator groove is used for winding the stator coil, the outer wall of the stator punching sheet is provided with the convex key, the convex key is integrally punched and formed along with the stator punching sheet, and the convex key plays an indication role, so that the convex keys on the outer walls of the adjacent stator punching sheets can correspond to each other during installation, and the stator grooves correspond to each other; according to the utility model, the surface of the outer shell is connected with the radiating fins, and the radiating fins made of an aluminum material can better absorb heat generated by working of the motor so as to dissipate the heat, so that the temperature of the motor is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a motor with a stator punching sheet with convex keys. Background Technique

[0002] The stator core of an electric motor is formed by stacking stator punching sheets, and the stator punching sheet is a key component in the motor. The notch on the stator punching sheet forms a stator slot, and a stator coil is embedded in the stator slot. The stator coil is an important electrical component and must be tightly fixed in the stator slot to withstand the impact force and electromagnetic force during the starting and running of the motor. Therefore, the material, inner diameter size, outer diameter size, slot shape size, quantity, etc. of the stator punching sheet have a direct impact on the efficiency of the motor. During the operation of the motor, energy losses will occur, such as: resistance loss of the stator winding, mechanical friction loss, hysteresis and eddy current losses in the magnetic field, etc. These adverse factors will lead to poor stability during the operation of the motor, uneven internal magnetic flux distribution, and disorder of the air-gap magnetic circuit, thereby causing noise problems. Among them, for a stator, rotor punching sheet and motor with the application number "CN201822045886.8", the utility model can make full use of the good magnetic conductivity of silicon steel sheets, the structures of the stator and rotor punching sheets are reasonable, effectively improve the magnetic density distribution of the iron core, reduce the consumption of winding and iron core raw materials, have high energy efficiency, and the motor has a long service life. However, there are still certain deficiencies in the stator punching sheet of this motor: since there is no installation position indication on the surface of the stator punching sheet, when the stator punching sheets are assembled and installed, it is necessary to adjust the stator slots for correspondence. Due to the large number of stator punching sheets, manual adjustment takes a lot of time, thus affecting the assembly efficiency. Content of the Utility Model

[0003] The purpose of the utility model is to provide a motor with a stator punching sheet with convex keys to solve the problem raised in the above background technique that since there is no installation position indication on the surface of the stator punching sheet, when the stator punching sheets are assembled and installed, it is necessary to adjust the stator slots for correspondence. Due to the large number of stator punching sheets, manual adjustment takes a lot of time, thus affecting the assembly efficiency.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A motor with a stator punching sheet with convex keys, wherein: The motor is composed of a housing, a stator core and a rotor. The stator core is installed on the inner wall of the housing, and the rotor is inserted through the middle of the stator core;

[0005] The stator core is composed of a plurality of stator punching sheets. A plurality of stator slots are opened on the surface of the stator punching sheet. A convex key is fixedly arranged on the outer wall of the stator punching sheet, and the convex key is integrally punched with the stator punching sheet.

[0006] As a preferred scheme of the utility model: The non-coincidence degree of teeth and slots in the positive and negative projections of the stator punching sheet ≤ 0.025 mm.

[0007] As a preferred embodiment of the present utility model: The stator punching is made of silicon steel material.

[0008] As a preferred embodiment of the present utility model: A plurality of heat sinks are connected to the surface of the outer housing, and the heat sinks are aluminum sheets.

[0009] As a preferred embodiment of the present utility model: The burr of the stator punching is less than 0.03 mm.

[0010] As a preferred embodiment of the present utility model: Fixed seats are fixedly installed on both sides of the bottom of the outer housing.

[0011] Compared with the prior art, the beneficial effects of the present utility model are:

[0012] (1) Stator slots are provided on the surface of the stator punching. The stator slots are used to wind the stator coil. A convex key is provided on the outer wall of the stator punching. The convex key is integrally formed by stamping with the stator punching. The convex key plays an indicating role, which is convenient for aligning the convex keys on the outer walls of adjacent stator punchings during installation, so that the stator slots are aligned, and it is convenient to quickly perform alignment adjustment during combined installation, improving the assembly efficiency;

[0013] (2) Heat sinks are connected to the surface of the outer housing. The aluminum heat sinks can better absorb the heat generated by the motor operation and then dissipate it, effectively reducing the motor temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the overall structural schematic diagram of the present utility model;

[0015] Figure 2 is the split structural schematic diagram of the present utility model;

[0016] Figure 3 is the structural schematic diagram of the stator core of the present utility model;

[0017] Figure 4 is the structural schematic diagram of the stator punching of the present utility model.

[0018] In the figure: 100, motor; 110, outer housing; 120, stator core; 121, stator punching; 122, stator slot; 123, convex key; DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0020] Please refer to Figures 1 - 4 , a motor with a stator punch sheet having convex keys, comprising: a housing 110, a stator core 120, and a rotor 130; the motor 100 is composed of the housing 110, the stator core 120, and the rotor 130. The stator core 120 is installed on the inner wall of the housing 110, and the rotor 130 is inserted through the middle of the stator core 120.

[0021] Please refer to Figure 4 , the stator core 120 is composed of a plurality of stator punch sheets 121. A plurality of stator slots 122 are formed on the surface of the stator punch sheet 121. A convex key 123 is fixedly provided on the outer wall of the stator punch sheet 121, and the convex key 123 is integrally formed by stamping with the stator punch sheet 121.

[0022] During specific use: stator slots 122 are formed on the surface of the stator punch sheet 121 for winding stator coils. A convex key 123 is provided on the outer wall of the stator punch sheet 121, and the convex key 123 is integrally formed by stamping with the stator punch sheet 121. The convex key 123 serves as an indicator, facilitating the alignment of the convex keys 123 on the outer walls of adjacent stator punch sheets 121 during installation, so that the stator slots 122 are aligned, and facilitating quick alignment adjustment during combined installation, thereby improving the assembly efficiency.

[0023] Please refer to Figure 3 , the non - coincidence degree of teeth and slots in the front and reverse projections of the stator punch sheet 121 is ≤0.025 mm.

[0024] During specific use: the non - coincidence degree of teeth and slots in the front and reverse projections of the stator punch sheet 121 is ≤0.025 mm, enabling the stator slots 122 after assembly to correspond to each other, facilitating the subsequent winding of stator coils.

[0025] Please refer to Figure 3 , Figure 4 , the stator punch sheet 121 is made of silicon steel.

[0026] During specific use: the stator punch sheet 121 is made of silicon steel sheet, which has the advantages of low iron loss, high magnetic induction intensity, and high stacking factor, facilitating wide application.

[0027] Please refer to Figure 1 , Figure 2, a plurality of heat sinks 200 are connected to the surface of the outer housing 110, and the heat sinks 200 are aluminum sheets.

[0028] During specific use: the heat sink 200 is connected to the surface of the outer housing 110, and the aluminum heat sink 200 can better absorb the heat generated by the operation of the motor 100 and then dissipate it, effectively reducing the temperature of the motor 100.

[0029] Please refer to Figure 4 , the burr of the stator punching sheet 121 is less than 0.03 mm.

[0030] During specific use: the burr of the stator punching sheet 121 is less than 0.03 mm, and the surface of the stator punching sheet 121 is regular and smooth, which can reduce the resistance loss.

[0031] Please refer to Figure 1 , fixing seats 300 are fixedly installed on both sides of the bottom of the outer housing 110.

[0032] During specific use: the motor 100 is installed and fixed through the fixing seats 300 on both sides of the bottom of the outer housing 110.

[0033] Stator slots 122 are formed on the surface of the stator punching sheet 121 for winding stator coils. A convex key 123 is provided on the outer wall of the stator punching sheet 121. The convex key 123 is integrally stamped with the stator punching sheet 121. The convex key 123 serves as an indicator, facilitating the alignment of the convex keys 123 on the outer walls of adjacent stator punching sheets 121 during installation, so that the stator slots 122 are aligned, and facilitating quick alignment adjustment during combined installation, improving the assembly efficiency.

[0034] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A motor with a stator punching sheet having convex keys, characterized in that, Including: A motor (100), which is composed of a housing (110), a stator core (120) and a rotor (130). The stator core (120) is installed on the inner wall of the housing (110), and the rotor (130) is inserted through the middle of the stator core (120). The stator core (120) is composed of a plurality of stator laminations (121). A plurality of stator slots (122) are formed on the surface of the stator lamination (121). A convex key (123) is fixedly arranged on the outer wall of the stator lamination (121), and the convex key (123) is integrally stamped with the stator lamination (121).

2. The motor with a stator punching sheet having convex keys according to claim 1, characterized in that: The non - coincidence degree of teeth and slots in the front and reverse projections of the stator lamination (121) is ≤ 0.025 mm.

3. A motor with a stator punching sheet having convex keys according to claim 1, characterized in that: The stator lamination (121) is made of silicon steel material.

4. The motor with a stator punching sheet having convex keys according to claim 1, characterized in that: A plurality of heat sinks (200) are connected to the surface of the housing (110), and the heat sinks (200) are made of aluminum sheets.

5. The motor with a stator punching sheet having convex keys according to claim 1, characterized in that: The burr of the stator lamination (121) is less than 0.03 mm.

6. The motor with a stator punching sheet having convex keys according to claim 1, characterized in that: Fixed seats (300) are fixedly installed on both sides of the bottom of the housing (110).

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