An insulating framework structure of a stable EPS motor

Abstract

This utility model discloses an insulating frame structure for a stable EPS motor, specifically relating to the field of motor technology. It includes an insulating frame body with an inlet slot, an outlet slot, and a rectangular retaining groove. A U-shaped groove is formed on the side wall of the insulating frame body. The insulating frame structure of this utility model, through the U-shaped structure of the inlet and outlet slots with rounded corners at the bottom, not only secures the enameled wire but also prevents wear or breakage due to excessively small turning angles, effectively protecting the enameled wire and improving its reliability. Simultaneously, the groove design of the inlet and outlet slots extending axially along the insulating frame body facilitates the winding and securing of the enameled wire, achieving a smooth transition and improving motor assembly efficiency. The U-shaped groove design prevents the enameled wire from sliding back and forth on the side wall of the insulating frame body, thereby increasing the slot fill factor of the motor and improving its stability and performance during use.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to an insulating frame structure for a stable EPS motor. Background Technology

[0002] Currently, the stator insulation of domestic EPS motors all adopts an insulating frame structure. The insulating frame not only provides insulation but also facilitates winding; traditional insulating frames only achieve insulation and winding. This structure has the following disadvantages: 1. The winding head and tail are not fixed, making it impossible to secure the coil tail wire. 2. The insulating frame lacks slots to guide the arrangement of each layer of enameled wire, which can easily lead to uneven spacing between layers, affecting slot fill factor. 3. This structure only achieves a single function and cannot secure the terminal block assembly, significantly impacting the automation of the production line. Utility Model Content

[0003] The main purpose of this utility model is to provide an insulating frame structure for a stable EPS motor, which can effectively solve the problems of relatively low slot fill factor and inability to fix the winding head and tail.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] An insulating frame structure for a stable EPS motor includes an insulating frame body and a stator core. The insulating frame body is provided with an inlet slot, an outlet slot and a rectangular slot. The side wall of the insulating frame body is provided with a U-shaped groove for limiting the enameled wire.

[0006] Preferably, the insulating frame body is composed of two frames arranged vertically.

[0007] Preferably, the inlet and outlet slots are grooves extending axially along the insulating skeleton body.

[0008] Preferably, the width of the U-shaped groove and the groove opening are both adapted to the diameter of the enameled wire.

[0009] Preferably, the insulating frame body is fixedly connected to the stator core through a transition fit.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] 1. This utility model adopts a U-shaped structure for the inlet and outlet slots with rounded corners at the bottom. While fixing the enameled wire, it can prevent the enameled wire from being worn or broken due to the small turning angle, effectively protecting the enameled wire and improving its reliability. At the same time, the groove design of the inlet and outlet slots extending along the axial direction of the insulation frame body facilitates the winding and fixing of the enameled wire, achieves a smooth transition, and improves the assembly efficiency of the motor.

[0012] 2. The width of the U-shaped groove on the side wall of the insulating frame body of this utility model is adapted to the diameter of the enameled wire. It can limit the vertical direction of the enameled wire when it is wound, preventing the enameled wire from sliding back and forth on the side wall of the insulating frame body, thereby improving the slot fill factor of the motor and thus improving the stability and performance of the motor during use.

[0013] 3. This utility model achieves a fixed connection between the insulating frame body and the stator core through a transition fit, which maintains precision assembly, significantly reduces assembly force requirements, and improves compatibility with automated production lines; the increased contact area optimizes the heat dissipation path, reduces winding temperature rise and contact resistance; the reasonable tolerance design reduces mold manufacturing costs, and the tight transition fit also reduces the gap between the frame and the core, effectively reducing motor noise. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of this utility model without the enameled wire wrapped around it;

[0016] Figure 3 This is a schematic diagram of the structure of the two insulating frame bodies of this utility model.

[0017] In the diagram: 1. Insulating frame body; 11. Inlet slot; 12. Outlet slot; 13. Rectangular slot; 14. U-shaped slot; 2. Stator core; 3. Enamelled wire. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0019] like Figures 1-3 As shown, an insulating frame structure for a stable EPS motor includes an insulating frame body 1, which is composed of two upper and lower frames. The frames are injection molded from high-temperature resistant polyamide (PA) material to ensure insulation performance and mechanical strength, while also providing flame retardancy. The insulating frame body 1 is provided with an inlet slot 11, an outlet slot 12, and a rectangular slot 13. Both the inlet slot 11 and the outlet slot 12 are U-shaped structures with rounded corners at the bottom. While fixing the enameled wire 3, the rounded corners also prevent the enameled wire 3 from turning too small, thus avoiding wear or breakage.

[0020] In addition, the rectangular slot 13 is used for fixing with the terminal block assembly. Multiple limiting blocks need to be fixed at the lower end of the terminal block assembly so that the terminal block can be directly locked onto the insulating frame using the limiting blocks, so as to fix the terminal block assembly and the insulating frame.

[0021] Furthermore, to facilitate the winding and fixing of the enameled wire 3, the inlet groove 11 and the outlet groove 12 are grooves extending axially along the insulating frame body 1. Since the starting and ending ends of the enameled wire 3 pass through the inlet groove 11 and the outlet groove 12 respectively, the grooves extend axially along the insulating frame body 1, which facilitates the smooth transition of the enameled wire 3 and also facilitates the fixing of the winding head and tail. The side wall of the insulating frame body 1 is provided with a U-shaped groove 14 for limiting the enameled wire 3. The width of the U-shaped groove 14 is adapted to the diameter of the enameled wire 3, so that the U-shaped groove 14 can hold the enameled wire 3 when it is wound, thereby limiting the enameled wire 3 in the vertical direction and preventing it from sliding back and forth on the side wall of the insulating frame body 1, which would affect the winding effect, improve the slot fill factor of the motor, and also increase the stability of the motor during use and improve the performance of the motor.

[0022] Furthermore, the insulating frame body 1 is fixedly connected to the stator core 2 through a transition fit. This design, while maintaining precision assembly, significantly reduces the assembly force requirements, improves the compatibility of automated production lines, effectively optimizes the heat dissipation path by increasing the contact area, and reduces winding temperature rise and contact resistance. Combined with reasonable tolerance design, it reduces mold manufacturing costs. At the same time, the tight transition fit reduces the gap between the frame and the core, resulting in a significant reduction in motor noise.

[0023] It should be noted that the specific installation methods of the insulating frame body 1, stator core 2 and enameled wire 3 in this utility model are conventional designs and will not be described in detail in this utility model.

Claims

1. An insulating frame structure for a stable EPS motor, comprising an insulating frame body (1) and a stator core (2), characterized in that: The insulating frame body (1) is provided with an inlet groove (11), an outlet groove (12) and a rectangular slot (13), and the side wall of the insulating frame body (1) is provided with a U-shaped groove (14) for limiting the enameled wire (3).

2. The insulating frame structure of a stable EPS motor according to claim 1, characterized in that: The insulating frame body (1) is composed of two frames arranged vertically.

3. The insulating frame structure of a stable EPS motor according to claim 1, characterized in that: The inlet groove (11) and outlet groove (12) are grooves extending axially along the insulating skeleton body (1).

4. The insulating frame structure of a stable EPS motor according to claim 3, characterized in that: The width of the U-shaped groove (14) and the groove opening are both adapted to the diameter of the enameled wire (3).

5. The insulating frame structure of a stable EPS motor according to claim 1, characterized in that: The insulating frame body (1) is fixedly connected to the stator core (2) through a transition fit.

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