Stator assembly of direct current motor

Abstract

The utility model relates to a stator assembly of a direct-current motor, which belongs to the technical field of motor stator assemblies and comprises a unit shell, a stator iron core main body is arranged on the inner side of the unit shell and comprises a first stator iron core piece and a second stator iron core piece, and a positioning block is fixed on the left side wall of the first stator iron core piece. The beneficial effects of the utility model are that through the second ventilation slot, ambient air can more easily flow through the interior of the unit housing to take away heat, thereby reducing the internal temperature, being helpful for preventing the motor from being damaged due to overheating, improving the stability and reliability of the motor, and reducing the cost. The first ventilation slots are formed in the outer wall of the stator core main body, and the cooling fins are arranged on the inner wall of the stator core main body, so that the cooling surface area of the stator core main body can be increased, the cooling effect is improved, heat can be conducted to the surrounding environment from the stator core main body more quickly by increasing the surface area, and the temperature of the stator core main body is reduced; the overall performance of the motor is improved.

Description

[0001] Stator assembly of DC motor Technical Field

[0002] The utility model relates to the technical field of motor stator components, in particular to a stator component of a DC motor. Background Art

[0003] The stator is the stationary part of the engine or generator. The stator is mainly composed of three parts: the stator core, the stator winding and the frame. The main function of the stator is to generate a rotating magnetic field. The stator core mainly includes stator plates and stator columns.

[0004] However, when the stator is laminated and connected, the stator core is prone to positional displacement during the lamination process, resulting in an unstable stator structure after lamination, which may affect the overall performance of the motor. The positioning and assembly of the stator core and the unit casing are crucial to ensure the stable operation of the motor. If the positioning and assembly cannot be performed, the gap between the stator core and the unit casing may be uneven, thereby affecting the electromagnetic performance of the motor. In response to the above situation, we have launched the stator assembly of the DC motor. Utility Model Content

[0005] The utility model aims to provide a stator assembly for a DC motor to solve the problem of inconvenience in positioning and assembling the stator in the above-mentioned background technology.

[0006] The technical solution of the utility model is:

[0007] A unit casing, wherein a stator core body is disposed inside the unit casing, wherein the stator core body comprises a first stator core sheet and a second stator core sheet, wherein a positioning block is fixed to the left wall of the first stator core sheet, and a limiting block is fixed to the right wall of the second stator core sheet, and a positioning groove is provided on the inner wall of the unit casing;

[0008] A locking block is fixedly connected to the outer wall of the second stator iron core sheet, and a first ventilation slot is formed on the outer wall of the second stator iron core sheet.

[0009] Furthermore, the first stator core sheet is connected to the second stator core sheet by means of a positioning block and a limiting block, and the positioning block is engaged with the inner side of the limiting block.

[0010] The first stator core sheet is connected to the second stator core sheet by a positioning block and a limiting block. The positioning block is engaged with the inner side of the limiting block, and the stator core bodies are stacked and assembled with each other, making the assembly process simpler and more efficient.

[0011] Furthermore, the positioning grooves are arranged in four groups, and the positioning grooves are snap-fittedly connected to the locking blocks.

[0012] The locking blocks on the outer wall of each set of stator core bodies are snap-fitted into the positioning grooves on the inner wall of the unit casing, and the stator core bodies are installed inside the unit casing, ensuring that the stator core bodies are firmly fixed inside the unit casing, which helps prevent the stator core bodies from loosening or shifting due to vibrations and vibrations generated during transportation or use.

[0013] The utility model provides a stator assembly of a DC motor by improving the stator assembly, which has the following improvements and advantages compared with the prior art:

[0014] First, the utility model engages the positioning block on the inner side of the limit block, and stacks and assembles the stator core bodies, making the assembly process simpler and more efficient. The two stator core sheets can be easily aligned and engaged together, thereby enhancing the connection strength between the stator core sheets, reducing loosening or damage caused by vibration or impact during transportation or work, and reducing the difficulty and complexity of assembly. Then, the locking blocks on the outer wall of each group of stator core bodies are engaged with the positioning grooves on the inner wall of the unit casing, and the stator core bodies are installed inside the unit casing, ensuring that the stator core bodies are firmly fixed inside the unit casing, helping to prevent the vibration and vibration generated during transportation or use from loosening or shifting the stator core bodies, and enhancing the structural strength between the stator core bodies and the unit casing, preventing distortion or deformation during high load or high-speed operation.

[0015] Secondly: The utility model, through the second ventilation slot, allows the surrounding air to flow more easily through the inside of the unit casing, taking away heat, thereby reducing the internal temperature, helping to prevent the motor from being damaged due to overheating, and improving its stability and reliability. The outer wall of the stator core body is provided with a first ventilation slot and the heat sink on the inner wall can increase the heat dissipation surface area of ​​the stator core body, thereby improving the heat dissipation effect. By increasing the surface area, heat can be conducted from the stator core body to the surrounding environment more quickly, reducing the temperature of the stator core body and improving the overall performance of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further explained below in conjunction with the accompanying drawings and embodiments:

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the first stator core sheet of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the second stator core sheet of the utility model;

[0020] Figure 4 It is a schematic diagram of the rear end structure of the casing of the utility model unit.

[0021] Explanation of the accompanying drawings: 1. Unit casing; 2. Stator core body; 201. First stator core sheet; 202. Second stator core sheet; 203. Positioning block; 204. Limiting block; 3. First ventilation slot; 301. Heat sink; 4. Locking block; 5. Positioning slot; 6. Second ventilation slot; 7. Cavity slot; 8. Motor shaft; 9. Fan blades; 10. Support block; 11. Insulation layer. DETAILED DESCRIPTION

[0022] The following will be combined with the attached Figures 1 to 4 The utility model is described in detail, and the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] The utility model provides a stator assembly of a DC motor by improving the stator assembly of the DC motor. Figure 1-Figure 4 As shown, it includes a unit casing 1, and a stator core body 2 is arranged inside the unit casing 1. The stator core body 2 includes a first stator core sheet 201 and a second stator core sheet 202. The left wall of the first stator core sheet 201 is fixed with a positioning block 203, and the right wall of the second stator core sheet 202 is fixedly connected with a limiting block 204. The inner wall of the unit casing 1 is provided with a positioning groove 5.

[0024] The outer wall of the second stator iron core sheet 202 is fixedly connected with a locking block 4, the outer wall of the second stator iron core sheet 202 is provided with a first ventilation slot 3, the first stator iron core sheet 201 is snap-connected with the second stator iron core sheet 202 through a positioning block 203 and a limit block 204, and the positioning block 203 is snap-connected to the inner side of the limit block 204.

[0025] In this embodiment: the first stator iron core sheet 201 is connected to the second stator iron core sheet 202 by a snap-fit ​​connection through a positioning block 203 and a limit block 204, and the positioning block 203 is snap-fitted to the inner side of the limit block 204, and the stator core main body 2 is stacked and assembled with each other, making the assembly process simpler and more efficient, and the two stator iron core sheets can be easily aligned and snapped together, thereby enhancing the connection strength between the stator iron core sheets, reducing loosening or damage caused by vibration or impact during transportation or work, and reducing the difficulty and complexity of assembly. Then, the locking block 4 on the outer wall of each group of stator core main body 2 is snap-fitted to the positioning groove 5 provided on the inner wall of the unit casing 1, and the stator core main body 2 is installed inside the unit casing 1, ensuring that the stator core main body 2 is firmly fixed inside the unit casing 1, which helps to prevent the occurrence of loosening or damage during transportation or use. The vibration and vibration generated can prevent the stator core body 2 from loosening or shifting, and enhance the structural strength between the stator core body 2 and the unit casing 1, preventing twisting or deformation during high load or high-speed operation, thereby extending the service life of the motor, and the inner wall of the unit casing 1 is provided with six groups of second ventilation slots 6, so that the surrounding air can more easily flow through the inside of the unit casing 1, taking away heat, thereby reducing the internal temperature, helping to prevent the motor from being damaged due to overheating, and improving its stability and reliability, and the outer wall of the stator core body 2 is provided with first ventilation slots 3 and heat sinks 301 on the inner wall, which can increase the heat dissipation surface area of ​​the stator core body 2, thereby improving the heat dissipation effect, and by increasing the surface area, heat can be conducted from the stator core body 2 to the surrounding environment more quickly, reducing the temperature of the stator core body 2 and improving the overall performance of the motor.

[0026] In a preferred embodiment, a heat sink 301 is fixedly connected to the inner wall of the first ventilation slot 3, which can increase the heat dissipation surface area of ​​the stator core body 2, thereby improving the heat dissipation effect. By increasing the surface area, heat can be conducted from the stator core body 2 to the surrounding environment more quickly, thereby reducing the temperature of the stator core body 2. A second ventilation slot 6 is provided on the inner wall of the unit casing 1, and the second ventilation slots 6 are arranged in six groups. Six groups of second ventilation slots 6 are provided, so that the surrounding air can more easily flow through the interior of the unit casing 1 and take away heat, thereby reducing the internal temperature and helping to prevent the motor from being damaged due to overheating.

[0027] In a preferred embodiment, the interior of the stator core body 2 is connected to a motor shaft 8, and the outer wall of the motor shaft 8 is fixedly connected to a fan blade 9. The rotational motion of the motor shaft 8 can be directly utilized to generate airflow, accelerate the flow of surrounding air, and effectively improve the heat dissipation efficiency.

[0028] In a preferred embodiment, a support block 10 is fixedly connected to the inner rear end of the unit casing 1, and the support block 10 is located at the rear end of the stator core body 2. An insulating layer 11 is fixedly connected to the right end wall of the support block 10. A cavity groove 7 is opened on the inner wall of the first stator iron core sheet 201. The support block 10 is fixedly connected to the inner wall of the unit casing 1, and then an insulating layer 11 is provided on the inner wall of the support block 10 to support and limit the stator core body 2 inside the unit casing 1. The cavity groove 7 is a U-shaped groove, which can optimize the magnetic field distribution, reduce magnetic resistance, and allow the magnetic flux to pass more smoothly, thereby improving the efficiency of the motor. When a coil is wound in the stator core and current is passed, the current will generate a magnetic field in the core.

[0029] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A stator assembly for a DC motor, characterized in that: The invention comprises a unit casing (1), a stator core body (2) being arranged on the inner side of the unit casing (1), the stator core body (2) comprising a first stator core sheet (201) and a second stator core sheet (202), a positioning block (203) being fixed to the left wall of the first stator core sheet (201), a limiting block (204) being fixedly connected to the right wall of the second stator core sheet (202), and a positioning groove (5) being provided on the inner wall of the unit casing (1); A locking block (4) is fixedly connected to the outer wall of the second stator iron core sheet (202), and a first ventilation slot (3) is provided on the outer wall of the second stator iron core sheet (202).

2. The stator assembly of a DC motor according to claim 1, characterized in that: The inner wall of the first ventilation slot (3) is fixedly connected with a heat sink (301), and the inner wall of the unit housing (1) is provided with second ventilation slots (6), and the second ventilation slots (6) are arranged in six groups.

3. The stator assembly of a DC motor according to claim 1, characterized in that: The first stator iron core sheet (201) is connected to the second stator iron core sheet (202) in a snap-fitting manner via a positioning block (203) and a limiting block (204), and the positioning block (203) is snap-fitted to the inner side of the limiting block (204).

4. The stator assembly of a DC motor according to claim 1, characterized in that: The positioning grooves (5) are arranged in four groups, and the positioning grooves (5) are connected to the locking blocks (4) in a snap-fitting manner.

5. The stator assembly of a DC motor according to claim 1, characterized in that: The interior of the stator core body (2) is connected to a motor shaft (8), and the outer wall of the motor shaft (8) is fixedly connected to a fan blade (9).

6. The stator assembly of a DC motor according to claim 1, characterized in that: A support block (10) is fixedly connected to the rear end of the unit casing (1), and the support block (10) is located at the rear end of the stator core body (2).

7. The stator assembly of a DC motor according to claim 6, characterized in that: An insulating layer (11) is fixedly connected to the right end wall of the support block (10), and a cavity groove (7) is provided on the inner wall of the first stator iron core sheet (201).

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