Novel uniformly-distributed permanent magnet synchronous motor wiring board assembly

Abstract

The utility model discloses a novel uniformly-distributed permanent magnet synchronous motor wiring board assembly, which particularly relates to the technical field of permanent magnet synchronous motors and comprises a wiring board plastic part, and a central point copper bar, a U-phase wiring board, a V-phase wiring board and a W-phase wiring board are arranged in the wiring board plastic part in an injection molding manner. And a plurality of hook structures are uniformly distributed in the circumferential direction of the wiring board plastic part. According to the novel uniformly-distributed permanent magnet synchronous motor wiring board assembly, the design of uniformly-distributed U-shaped hooks is adopted, winding of varnished wires can be facilitated, the plurality of metal pieces and the hooks of the U-shaped hooks are uniformly distributed, mutual interference during installation of the varnished wires can be avoided, the stability of a motor during use can be improved, the design of integral injection molding is adopted, and the cost is reduced. The problem of tolerance accumulation in a traditional assembly process can be eliminated, the structural stability is improved, the embedded end of the metal part is provided with the boss matched with the plastic part cavity, the copper bar is wrapped by molten plastic during injection molding to form mechanical embedding, and the binding force is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of permanent magnet synchronous motor technology, and in particular to a novel uniformly distributed permanent magnet synchronous motor terminal block assembly. Background Technology

[0002] Currently, the terminal block structure of EPS permanent magnet synchronous motors is widely used. However, the space around the motor's circumference is limited, requiring both series and parallel connections to be achieved while controlling the motor's insulation distance. For motors with a small number of parallel branches, this is relatively easy to implement in terms of manufacturing. However, for motors with a large number of parallel branches, the spatial arrangement must consider both the positions of the three-phase PINs and the distribution of the hooks. The hook distribution around the circumference is affected by the PINs and cannot be evenly distributed, significantly increasing the difficulty of parts processing and fully automated equipment processes, resulting in relatively low component production efficiency. Utility Model Content

[0003] The main purpose of this utility model is to provide a novel uniformly distributed permanent magnet synchronous motor terminal block assembly, which can effectively solve the problems of high processing difficulty and relatively low production efficiency.

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

[0005] A novel uniformly distributed permanent magnet synchronous motor terminal block assembly includes a terminal block plastic component, wherein a center point copper busbar, a U-phase terminal block, a V-phase terminal block, and a W-phase terminal block are injection molded inside the terminal block plastic component.

[0006] The plastic part of the terminal block has multiple hook structures evenly distributed in the circumferential direction.

[0007] The plastic part of the terminal block has multiple processing holes.

[0008] Preferably, the center point copper busbar, U-phase terminal block, V-phase terminal block and W-phase terminal block are independently processed and then injection molded into the plastic part of the terminal block.

[0009] Preferably, the plurality of the process holes are symmetrically distributed on the edge of the connector plastic part.

[0010] Preferably, the outer ring of the center copper busbar is fixed with a U-shaped hook, and the inner ring of the terminal block is also fixed with a U-shaped hook.

[0011] Preferably, the multiple U-shaped hooks located on the same side are evenly distributed in the circumferential direction, and the angle difference between adjacent U-shaped hooks is 15°.

[0012] Preferably, the plastic part of the terminal block, the center point copper busbar, the U-phase terminal block, the V-phase terminal block, and the W-phase terminal block are integrally formed by injection molding.

[0013] Preferably, the inner diameter of the plastic part of the terminal block is not less than 56mm and the outer diameter is not greater than 69mm;

[0014] The center point copper busbar, U-phase terminal block, V-phase terminal block and W-phase terminal block are all metal parts, with an inner diameter of not less than 46mm and an outer diameter of not more than 78mm.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. This terminal block assembly adopts a uniformly distributed U-shaped hook design, which facilitates the winding of enameled wire and improves the stability of the motor. Furthermore, the multiple metal parts and the hooks of the U-shaped hooks are evenly distributed, which can avoid mutual interference of the enameled wires during installation and improve the stability of the motor during use.

[0017] 2. This junction box assembly adopts an injection molding one-piece design, which can eliminate the tolerance accumulation problem in traditional assembly processes, improve structural stability, and the metal part is set with a boss at the embedded end to match the plastic part cavity. During injection molding, the molten plastic wraps around the copper busbar to form a mechanical fit, enhancing the bonding force.

[0018] 3. This terminal block assembly adopts a process-machined hole design to ensure the positional accuracy of the center point copper busbar with the U-phase terminal block, V-phase terminal block, and W-phase terminal block. After machining, it is used for gripping by tooling fixtures, which facilitates the assembly operation of automated production lines. It is symmetrically distributed on the edge of the plastic parts to avoid structural deformation caused by stress concentration.

[0019] 4. This terminal block assembly adopts a multi-hook structure design to achieve mechanical fixation of the terminal block assembly, avoid structural displacement caused by vibration during motor operation, and improve the stability of the motor during use. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the metal part of this utility model.

[0022] In the diagram: 1. Plastic part of the terminal block; 2. Copper busbar at the center point; 3. U-phase terminal block; 4. V-phase terminal block; 5. W-phase terminal block; 6. Hook structure; 7. U-shaped hook. Detailed Implementation

[0023] 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.

[0024] like Figure 1 and Figure 2As shown, a novel uniformly distributed permanent magnet synchronous motor terminal block assembly includes a terminal block plastic component 1. The terminal block plastic component 1 serves as the basic frame of the overall structure, and is injection molded from high-strength insulating material, providing mechanical support and electrical insulation functions. The terminal block plastic component 1 contains a center point copper busbar 2, a U-phase terminal block 3, a V-phase terminal block 4, and a W-phase terminal block 5, all injection molded inside. The center point copper busbar 2 connects to the neutral point of the three-phase windings of the motor, forming a common node for the parallel circuit. After being independently processed, it is embedded in the center of the terminal block plastic component 1. Copper material is used to improve conductivity, and tin plating on the surface enhances welding reliability. It is also tightly bonded to the plastic component through injection molding to avoid poor contact caused by loosening.

[0025] In addition, to facilitate winding, 12 U-shaped hooks 7 are fixed in a ring array on the outer ring of the center point copper busbar 2, and 4 U-shaped hooks 7 are fixed in a ring array on the inner ring of the terminal block. Among them, the multiple U-shaped hooks 7 located in the inner ring correspond to the input terminals of the three-phase windings of the motor, realizing the electrical connection between the windings and the external circuit. The center point copper busbar 2 is processed and injection molded into the circumferential area of ​​the terminal block plastic part 1, with its position corresponding to the output terminal of the motor winding. The surface is tin-plated to facilitate the welding of the enameled wire and to form an insulating isolation with the terminal block plastic part 1 to prevent phase-to-phase short circuits. An asymmetrical layout design is adopted to avoid the uniform distribution area of ​​the 12 U-shaped hooks 7, solving the problem of conflict between the PI N position and the hook distribution in the traditional design. Multiple hook structures 6 are evenly distributed in the circumferential direction of the terminal block plastic part 1. The multiple hook structures 6 cooperate with the motor insulation frame to realize the mechanical fixation of the terminal block assembly and avoid structural displacement caused by vibration during motor operation.

[0026] The plastic part 1 of the terminal block has multiple processing holes. The center copper busbar 2, U-phase terminal block 3, V-phase terminal block 4 and W-phase terminal block 5 are independently processed and then injection molded into the plastic part 1. Multiple U-shaped hooks 7 located on the same side are evenly distributed in the circumferential direction, and the angle difference between adjacent U-shaped hooks 7 is 15° (for example, the angle difference between two adjacent U-shaped hooks 7 located in the inner circle is 15°, and the angle difference between two adjacent U-shaped hooks 7 located in the outer circle is 15°). Due to the even distribution of multiple U-shaped hooks 7, it is convenient to wind the enameled wire. Compared with the unevenly distributed U-shaped hooks 7, it improves the working efficiency during component installation and also improves the stability of the motor. In addition, the even distribution of multiple U-shaped hooks 7 can avoid mutual interference during the installation of enameled wire and improve the stability of the motor during use.

[0027] In addition, multiple process holes are symmetrically distributed on the edge of the plastic part 1 of the terminal board. During the injection molding process, they serve as mold positioning holes to ensure the positional accuracy of the center point copper busbar 2 and the U-phase terminal board 3, V-phase terminal board 4, and W-phase terminal board 5. After processing, they are used for gripping by tooling fixtures to facilitate assembly operations on automated production lines. The symmetrical distribution on the edge of the plastic part avoids structural deformation caused by stress concentration.

[0028] In addition, the plastic part 1 of the terminal block, the copper busbar at the center point 2, the U-phase terminal block 3, the V-phase terminal block 4 and the W-phase terminal block 5 are integrally molded by injection molding, which can eliminate the tolerance accumulation problem in the traditional assembly process, improve structural stability, and the metal part is provided with a boss at the embedded end to match the cavity of the plastic part. During injection molding, the molten plastic wraps around the copper busbar to form a mechanical fit, which enhances the bonding force.

[0029] The plastic part 1 of the terminal block has an inner diameter of not less than 56mm and an outer diameter of not more than 69mm. The center point copper busbar 2, U-phase terminal block 3, V-phase terminal block 4 and W-phase terminal block 5 are all metal parts with an inner diameter of not less than 46mm and an outer diameter of not more than 78mm.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A new type of permanent magnet synchronous motor connection plate assembly with uniform distribution, comprising a connection plate plastic part (1), characterized in that: The center point copper bar (2), the U-phase terminal block (3), the V-phase terminal block (4) and the W-phase terminal block (5) are internally injection molded in the terminal block plastic part (1); The terminal block plastic part (1) is uniformly distributed with a plurality of hook structures (6) in the circumferential direction; A plurality of process processing holes are provided on the terminal block plastic part (1).

2. A novel connection board assembly for a permanent magnet synchronous motor according to claim 1, characterized in that: The center point copper bar (2), the U-phase terminal block (3), the V-phase terminal block (4) and the W-phase terminal block (5) are independently processed and injection molded in the terminal block plastic part (1).

3. A novel connection board assembly for a permanent magnet synchronous motor according to claim 1, characterized in that: A plurality of process processing holes are symmetrically distributed on the edge of the terminal block plastic part (1).

4. A novel connection board assembly for a permanent magnet synchronous motor according to claim 1, characterized in that: The outer ring of the center point copper bar (2) is fixed with 12 U-shaped hooks (7) in a ring array, and the inner ring of the terminal block is also fixed with 4 U-shaped hooks (7) in a ring array.

5. A novel connection board assembly for a permanent magnet synchronous motor according to claim 4, characterized in that: A plurality of U-shaped hooks (7) located on the same side are uniformly distributed in the circumferential direction, and the angle difference between adjacent U-shaped hooks (7) is 15°.

6. A novel connection board assembly for a permanent magnet synchronous motor according to claim 1, characterized in that: The terminal block plastic part (1) and the center point copper bar (2), the U-phase terminal block (3), the V-phase terminal block (4) and the W-phase terminal block (5) are integrally formed by injection molding.

7. A novel connection board assembly for a permanent magnet synchronous motor according to claim 1, characterized in that: The inner diameter of the terminal block plastic part (1) is not less than 56mm, and the outer diameter is not greater than 69mm; The center point copper bar (2), the U-phase terminal block (3), the V-phase terminal block (4) and the W-phase terminal block (5) are all metal parts, and the inner diameter of the metal part is not less than 46mm, and the outer diameter is not greater than 78mm.

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