Insulating plastic sheet for outer rotor construction wheel motor

Abstract

The utility model discloses an insulating plastic sheet for outer rotor structure wheel hub motor. The insulating plastic sheet is arranged on the core end face of the outer rotor structure wheel hub motor, one side of the insulating plastic sheet has a fillet structure, and the insulating plastic sheet one side edge is equipped with a limiting support structure. The main body of insulating plastic sheet includes arc part, the outside of arc part is connected with tooth structure, and the tooth shape and the tooth structure shape of core end face are consistent. The utility model improves its own process manufacturing feasibility, is convenient for large -scale production, reduces cost, and can play better protection function, and is more excellent.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts manufacturing technology, specifically relating to an insulating plastic sheet for a hub motor with an external rotor structure in new energy vehicles. Background Technology

[0002] The external rotor hub motor of new energy vehicles consists of a stator assembly and a rotor assembly. The stator assembly is the main body housing the iron core and copper wire windings. When the copper wire windings are energized, they interact with the permanent magnet to generate driving force. Therefore, the copper wire windings are designed with a specific wiring layout and are sequentially inserted into the iron core using a wiring machine. Because the iron core is made of silicon steel sheets with sharp edges, it is easy to damage the outer enameled wire of the copper wire windings during wiring, leading to short circuits. Therefore, engineers designed insulating sheets to be attached to the two outer walls of the iron core in the axial direction to provide protection. Currently, the insulating sheets used are made of fiber, obtained through waterjet cutting. This manufacturing process has poor performance, and the cut edges are rough, which is detrimental to the wiring operation. Utility Model Content

[0003] In view of the above-mentioned problems, the purpose of this utility model is to propose an insulating plastic sheet for hub motors with external rotor structures in new energy vehicles.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: The insulating plastic sheet is arranged on the end face of the iron core of the external rotor hub motor to protect the iron core slot and allow the copper wire winding to be installed smoothly; one side of the insulating plastic sheet has a rounded corner structure, and one side of the insulating plastic sheet is provided with a limiting support structure.

[0005] The insulating plastic sheet body includes an arc-shaped portion, and the outer side of the arc-shaped portion is connected with a toothed structure, the shape of which matches the toothed structure on the end face of the iron core.

[0006] An insulating plastic sheet is attached to one end face of the iron core.

[0007] The arc-shaped portion of the insulating plastic sheet is attached to the end face of the inner ring of the iron core, and the tooth structure of the insulating plastic sheet is attached to the corresponding tooth structure on the end face of the outer ring of the iron core.

[0008] The edges of the insulating plastic sheet on the side of the arc-shaped portion that does not contact the iron core are all designed and machined to be rounded.

[0009] The arc-shaped portion of the insulating plastic sheet has a toothed structure that protrudes to form a limiting support for positioning and increasing strength.

[0010] The arc-shaped portion and toothed structure of the insulating plastic sheet are integrally molded from the same material.

[0011] The beneficial effects of this utility model are: This invention improves the feasibility of its manufacturing process, facilitates large-scale production, and reduces costs. Simultaneously, it provides better protection during the copper wire winding insertion process, meeting the needs of manufacturing processes and efficiency.

[0012] Meanwhile, the structural design of this utility model incorporates limit supports, reducing the difficulty for operators during the pasting process. The contact edges are rounded for a smooth transition, facilitating the entry of the copper wire winding into the iron core slot without damage. This redesigned insulating plastic sheet is superior to the original design. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the installation structure of this utility model.

[0015] 1-Rounded corner, 2-Limiting support, 3-Insulating plastic sheet, 4-Iron core. Detailed Implementation

[0016] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings, but this is not a limitation on the scope of protection of this utility model.

[0017] like Figure 1 As shown, the insulating plastic sheet 3 is arranged on the end face of the iron core 4 of the outer rotor hub motor to protect the iron core slot and allow the copper wire winding to be installed smoothly; one side of the insulating plastic sheet 3 has a rounded corner 1 structure, and one side of the insulating plastic sheet 3 is provided with a limiting support 2 structure.

[0018] The insulating plastic sheet 3 includes an arc-shaped part that matches the inner edge of the end face of the iron core 4. The outer side of the arc-shaped part is connected with a toothed structure, and the tooth shape matches the toothed structure shape of the end face of the iron core 4.

[0019] An insulating plastic sheet 3 is attached to one end face of the iron core 4. The copper wire winding passes through the grooves of the insulating plastic sheet 3 and enters the slots of the iron core 4.

[0020] like Figure 2 As shown, the arc-shaped part of the insulating plastic sheet 3 is attached to the end face of the inner ring of the iron core 4, and the tooth structure of the insulating plastic sheet 3 is attached to the tooth structure on the end face of the outer ring of the iron core 4.

[0021] The edges of the insulating plastic sheet 3 on the side that does not contact the iron core 4 in the arc-shaped portion are all designed and machined into rounded corners 1. Preferably, the edges of the insulating plastic sheet are all designed with rounded corners 1 for transition, which facilitates the copper wire winding to smoothly enter the iron core slot.

[0022] The arc-shaped portion of the insulating plastic sheet 3 protrudes from the tooth structure to form a limiting support 2 for positioning and increasing strength. The arc-shaped portion and the tooth structure of the insulating plastic sheet 3 are integrally molded from the same material.

[0023] like Figure 1 and Figure 2 As shown, the insulating plastic sheet of this utility model is equipped with a limiting support 2, which makes it easier for the operator to use special tools to stick it.

[0024] This utility model's insulating plastic sheet is made of plastic, allowing for rapid and low-cost production using injection molding. It can also withstand the temperature environment inside an external rotor hub motor. Furthermore, the insulating plastic sheet itself features a limiting support structure, facilitating the application of the insulating plastic sheet by operators using specialized tooling.

[0025] Furthermore, the edge of one contact surface is rounded with a fillet 1 to facilitate the entry of the copper wire winding into the slot of the iron core 4 without damage.

[0026] The redesigned insulating plastic sheet is superior to the original design.

[0027] Furthermore, this invention uses plastic material and can be further modified with a small amount of additives to increase structural rigidity, meeting the needs of manufacturing processes and efficiency, and ensuring that it does not deform during the cooling process after injection molding.

Claims

1. An insulating plastic sheet for an external rotor hub motor, characterized in that: The insulating plastic sheet (3) is arranged on the end face of the iron core (4) of the outer rotor hub motor to protect the iron core slot and allow the copper wire winding to be installed smoothly; one side of the insulating plastic sheet (3) has a rounded corner (1) structure, and one side of the insulating plastic sheet (3) is provided with a limiting support (2) structure.

2. The insulating plastic sheet for an external rotor hub motor according to claim 1, characterized in that: The insulating plastic sheet (3) includes an arc-shaped part, and the outer side of the arc-shaped part is connected with a toothed structure. The tooth shape matches the toothed structure shape of the end face of the iron core (4).

3. An insulating plastic sheet for an external rotor hub motor according to claim 2, characterized in that: An insulating plastic sheet (3) is attached to one end face of the iron core (4).

4. An insulating plastic sheet for an external rotor hub motor according to claim 3, characterized in that: The arc-shaped part of the insulating plastic sheet (3) is attached to the end face of the inner ring of the iron core (4), and the tooth structure of the insulating plastic sheet (3) is attached to the tooth structure on the end face of the outer ring of the iron core (4).

5. An insulating plastic sheet for an external rotor hub motor according to claim 1, characterized in that: The edges of the insulating plastic sheet (3) on the side of the arc-shaped part that does not contact the iron core (4) are all designed and processed into rounded corners (1).

6. An insulating plastic sheet for an external rotor hub motor according to claim 1, characterized in that: The arc-shaped portion of the insulating plastic sheet (3) protrudes from the tooth structure to form a limiting support (2) for positioning and increasing strength.

7. An insulating plastic sheet for an external rotor hub motor according to claim 1, characterized in that: The arc-shaped portion and tooth structure of the insulating plastic sheet (3) are integrally molded from the same material.

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