Five-slot square rotor core sheet for five-slot square rotor whole circle structure

Abstract

The utility model relates to a direct current brush motor, especially five-groove square rotor chip for five-groove square rotor whole circle structure. Five-groove square rotor chip for five-groove square rotor whole circle structure, including five petal rotor tooth and five slot, the rotor tooth tip of rotor tooth is unfolded to both sides, the rotor tooth tip is unfolded to both sides flat, the slot between the adjacent two rotor tooth tips is wider, and the internal winding space is larger after whole circle. The utility model has the advantages that: when five-groove square rotor is whole, on the one hand, the rotor tooth tip is deformed inward and is gathered, so that the arrangement between the winding enameled wire is more compact, on the other hand, the slot is narrow, the slot is smaller than the enameled wire diameter of winding, can prevent the flying wire of rotor when high speed operation, thereby saves the slot wedge or slot glue.

Description

Technical Field

[0001] This utility model relates to DC brushed motors, and in particular to a five-slot square rotor chip for a five-slot square rotor with a round structure. Background Technology

[0002] In the traditional production of brushed DC motor rotors, slot wedges or slot rubber are typically used to protect the windings and prevent wires from flying off during high-speed rotor operation. This wastes materials and increases the complexity of the process.

[0003] Specifically, in the design of traditional DC brushed motor rotor chips, the slots of the chip stack are usually designed to be narrow in order to reduce the rotor's positioning torque, which is not conducive to winding. The narrower the slots of the chip stack, the easier it is to cause wire damage during winding, thus reducing the insulation performance of the motor. When the slots of the chip stack are smaller than the diameter of the enameled wire in the winding, conventional winding methods cannot be implemented. Summary of the Invention

[0004] To solve the technical problem that the small slot winding cannot be achieved, this utility model provides a five-slot square rotor chip for a five-slot square rotor with a fully circular structure.

[0005] The technical solution of this utility model is as follows: The five-slot square rotor circular structure uses a five-slot square rotor chip, which includes five rotor teeth and five slots. The rotor tooth tips spread out to both sides, and the slots between adjacent rotor tooth tips are wider, resulting in a larger internal winding space compared to the circular structure.

[0006] The rotor tooth tips deform inward and converge, and the top of the entire rotor tooth becomes arc-shaped until it falls completely into the tip circle of the rotor tooth.

[0007] The slot becomes narrower, and the slot diameter is smaller than that of the enameled wire in the winding.

[0008] The technical solution of this utility model features a novel structure and a clever and simple design. Before the five-slot square rotor is rounded, the slot openings are wider, which is beneficial for winding and reduces the risk of wire damage. Before the five-slot square rotor is rounded, the rotor tooth tips are unfolded, ensuring a larger internal winding space. After the five-slot square rotor is rounded, on the one hand, the rotor tooth tips deform inward and converge, making the arrangement between the enameled wires in the winding more compact. On the other hand, the slot openings become narrower, and the slot openings are smaller than the diameter of the enameled wires in the winding, which can prevent the wires from flying off during high-speed operation, thus saving slot wedges or slot glue. At the same time, the narrower slot openings also reduce the positioning torque of the motor rotor. Attached Figure Description

[0009] Figure 2 This is a schematic diagram of the structure of this utility model; Figure 1This is a schematic diagram of the assembly structure of this utility model; Figure 3 This is a schematic diagram of the structure of the five-slot square rotor of this utility model when it is not fully round; Figure 4 This is a schematic diagram of the structure of the five-slot square rotor of this utility model after it has been rounded. Detailed Implementation

[0010] The present invention will be further described below with reference to the accompanying drawings and embodiments. Example

[0011] like Figure 2 , 3 The five-slot square rotor chip shown in Figure 4 uses a circular structure and includes an annular body. The annular body has five rotor teeth 10 and five slots 13. The rotor tooth tips 12 of the rotor teeth 10 extend to both sides, and the slots between adjacent rotor tooth tips 12 are wider, resulting in a larger internal winding space compared to the circular structure. The rotor teeth 10 are arranged perpendicular to the circumference of the annular body, and a circular hole 9 is located in the center of the annular body.

[0012] After the entire rotor is shaped by the rounding tooling, the rotor tooth tip 12 deforms and shrinks inward, and the entire rotor tooth tip 11 becomes bow-shaped until it completely falls into the rotor tooth tip circle 15.

[0013] After the entire rotor is shaped by the rounding tooling, the slot 13 becomes narrower and smaller than the diameter of the enameled wire of the winding.

[0014] like Figure 1 In use, the rotor chip stack 2 has a circular hole 9 at its center, into which the rotor shaft 1 is pressed. After the stop ring 4 is pressed into the appropriate position on the rotor shaft 1, the semi-finished rotor is coated. The commutator 3 is fixed on the rotor shaft 1, and the winding 6 is wound on the coated rotor chip stack 2. The outer ring of the rotor chip stack 2 is rounded, and an inner cooling fan 7 is installed. Before the rotor chip stack 2 is rounded, the number of square rotor teeth on the rotor chip stack 2 is five, and the number of slots is five, with an overall appearance of a near-regular pentagon. The winding 6 is wound on the rotor chip stack 2 with the rotor coating layer 5. Multiple five-slot square rotor chips 8 are stacked and riveted to form the rotor chip stack 2. It has a circular hole 9 at its center that mates with the rotor shaft 1. The five-slot square rotor chip 8 has five rotor teeth 10 and five slots 13. Because the rotor tooth tips 12 of the square rotor teeth 10 expand to both sides, the curvature of the top 11 of the square rotor teeth is extremely small; a slot 13 is formed between two adjacent rotor tooth tips 12. The slot 13 is relatively wide, and the internal winding space 14 is larger than that after the whole circle is formed, which facilitates rotor winding. Before the five-slot square rotor chip 8 is made into a whole circle, its overall appearance is a near-regular pentagon.

[0015] The five-slot square rotor assembly provided by this utility model has been wound; Figure 4 This describes the state of the five-slot square rotor assembly after rounding. The changes after rounding the five-slot square rotor using the rounding fixture are as follows: 1. The rotor tooth tips 12 deform inwards and converge, with the middle rotor tooth tips 12 outside the rotor tooth tip circle 15, until the deformation completely falls within the rotor tooth tip circle 15; 2. The flat shape of the rotor tooth tip 11 changes to an arc shape; 3. After the internal winding space 14 converges, the arrangement of the enameled wires in the winding 6 becomes more compact; 4. The slot opening 13 between adjacent rotor tooth tips 12 becomes narrower. The slot opening 13 is smaller than the diameter of the enameled wire in the winding 6, which prevents wire from flying off during high-speed rotor operation, thus saving slot wedges or slot glue. Simultaneously, the narrowing of the slot opening 13 also reduces the positioning torque of the motor rotor.

[0016] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A five-slot square rotor chip with a circular structure, comprising an annular body, characterized in that: The annular body is provided with five-lobed rotor teeth (10) and five slots (13). The rotor teeth (10) are arranged perpendicular to the circumference of the annular body. The rotor tooth tips (12) of the rotor teeth (10) are spread out to both sides. The rotor tooth tips (12) are spread out to both sides. The slots between two adjacent rotor tooth tips (12) are wider, and the internal winding space (14) is larger than that after the whole circle is formed.

2. The five-slot square rotor chip for the five-slot square rotor circular structure according to claim 1, characterized in that: The rotor tooth tip (12) deforms and shrinks inward, and the entire rotor tooth tip (11) becomes bow-shaped until it falls completely into the rotor tooth tip circle (15).

3. The five-slot square rotor chip for the five-slot square rotor circular structure according to claim 1, characterized in that: The slot (13) becomes narrower and the slot diameter is smaller than that of the enameled wire of the winding.

4. The five-slot square rotor chip for the five-slot square rotor circular structure according to claim 1, characterized in that: The rotor tooth tip (12) is flat on both sides, and the slot between two adjacent rotor tooth tips (12) is wider, which is larger than the internal winding space (14) after the whole circle is formed.

Images