Motor claw pole with permanent magnet mounting grooves

Abstract

The utility model discloses a motor claw pole with permanent magnet mounting grooves, which comprises a magnet yoke part, a motor claw pole piece is arranged on the outer surface of the magnet yoke part, permanent magnet mounting concave grooves are arranged on the surface of the motor claw pole piece, and the permanent magnet mounting concave grooves are distributed on the outer surfaces of the left side and the right side of the motor claw pole piece. Through the integrated casting structure, the permanent magnet installation recessed grooves are integrally formed in the two sides of the motor claw pole piece, installation is convenient, meanwhile, machining is convenient, and cost is low.

Description

Technical Field

[0001] This utility model relates to the field of motor claw poles with permanent magnet mounting slots, and more specifically, to motor claw poles with permanent magnet mounting slots. Background Technology

[0002] With the diversification and miniaturization of automobile engines, engine structures are becoming increasingly compact, requiring claw-pole generators to be smaller and have higher power generation. To meet these requirements and improve low-speed power generation, permanent magnets are installed on the claw poles. There are two traditional methods for manufacturing claw poles with permanent magnets. The first method involves milling 12 slots on the side of the claw pole using a milling cutter. This method requires frequent tool changes, is complex, demands precise installation and positioning, and is time-consuming, taking approximately 15-20 minutes per slot, resulting in low production efficiency. The second method involves forging the magnet mounting slots directly onto the claw pole. Since the excitation coil needs to be assembled inside the claw pole, sufficient space is required, resulting in only a very thin wall inside the magnet placement slot. Because the claw pole blank is a hot-forged part, the shape cannot be guaranteed during demolding. Furthermore, the mold for directly forging the thin-walled positioning claw pole, while ensuring the shape, has a short lifespan, allowing only about 3000 units to be produced.

[0003] In existing technologies, such as the patented announcement CN212969222U, a claw pole blank structure for a claw pole generator with a permanent magnet mounting groove is provided. A permanent magnet fixing protrusion blank is provided on the base bottom surface near the root of each claw, between each claw and the yoke. A permanent magnet mounting groove is provided on the side of the claw, and an inclined surface is provided on the inner side of the claw. The advantage is that the claw pole blank with the permanent magnet mounting groove and the inner magnet fixing protrusion is forged first, and then a portion of the protrusion blank is machined away, leaving the remaining portion to form a thin-walled structure for magnet fixing. This achieves the ability to process a claw pole with a thin-walled permanent magnet mounting groove structure that meets the requirements for permanent magnet installation in a single clamping operation, shortening the processing time from 20 minutes to 20 seconds, improving processing efficiency, and increasing the mold life from 3000 pieces to 5000 pieces.

[0004] The aforementioned patents employ forging, and their outer surfaces are designed with multiple complex groove and recessed cavity structures, making installation inconvenient and the processing procedures complex and costly. Utility Model Content

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide a motor claw pole with a permanent magnet mounting groove. Through an integrated casting structure, the permanent magnet mounting recess is integrally formed on both sides of the motor claw pole component, which is convenient to install, easy to process, and low in cost.

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] A motor claw pole with permanent magnet mounting grooves includes a yoke, the outer surface of which is provided with motor claw pole components, and the surface of the motor claw pole components is provided with permanent magnet mounting recessed grooves. The permanent magnet mounting recessed grooves are distributed on the left and right outer surfaces of the motor claw pole components. Through an integrated casting structure, the permanent magnet mounting recessed grooves are integrally formed on both sides of the motor claw pole components, which is convenient for installation, easy to process, and low in cost.

[0008] Furthermore, the lower end surface of the motor claw pole is provided with an inclined cut, and the permanent magnet mounting recesses are distributed on the surface of the inclined cut of the motor claw pole.

[0009] Furthermore, the motor claw pole piece adopts a variable diameter claw structure, and its upper end is set as a retractable claw structure.

[0010] Furthermore, the outer surface of the motor claw electrode is provided with rounded corners.

[0011] Furthermore, the outer surface of the motor claw electrode is smoothed and polished.

[0012] Furthermore, the inner surface of the permanent magnet mounting recess of the motor claw pole is polished.

[0013] Furthermore, the eight sets of motor claw poles are distributed on the outer surface of the magnetic yoke.

[0014] Compared with existing technologies, the advantages of this utility model are:

[0015] (1) Through the integrated casting structure, the permanent magnet mounting recess is integrally formed on both sides of the motor claw pole, which is convenient to install, easy to process, and low in cost. Attached Figure Description

[0016] Figure 1 This is a first schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a second schematic diagram of the overall structure of this utility model;

[0018] Figure 3 This is a third schematic diagram of the overall structure of this utility model.

[0019] Explanation of the labels in the diagram:

[0020] 1. Magnetic yoke, 2. Motor claw pole, 3. Permanent magnet mounting recess, 4. Rounded corner, 5. Inclined cut, 20. Curved bulge surface, 21. Convex tooth reinforcing rib. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1: Please refer to Figure 1-3 The motor claw pole with permanent magnet mounting slots includes a yoke 1, a motor claw pole 2 on the outer surface of the yoke 1, and permanent magnet mounting recesses 3 on the surface of the motor claw pole 2. The permanent magnet mounting recesses 3 are distributed on the left and right outer surfaces of the motor claw pole 2. Through an integrated casting structure, the permanent magnet mounting recesses are integrally formed on both sides of the motor claw pole, which is convenient for installation, easy to process, and low in cost. The outer end of the motor claw pole 2 is provided with a curved bulge surface 20, and the inner surface of the motor claw pole 2 is provided with a toothed reinforcing rib 21. At the curved bulge surface 20, when rotating, multiple motor claw poles 2 form a circular curved surface, reducing wind impact and noise. The toothed reinforcing rib 21 on the inner side strengthens the structural strength of the motor claw pole 2 and makes it less likely to break at the claw teeth.

[0023] The lower end surface of the motor claw pole piece 2 is provided with an inclined cut 5, and the permanent magnet mounting recess 3 is distributed on the surface of the inclined cut 5 of the motor claw pole piece 2; the permanent magnet can be directly inserted between the two motor claw pole pieces 2, which is convenient for installation. The exposed permanent magnet mounting recess 3 can be integrally cast, which is convenient for processing and production.

[0024] The motor claw pole 2 adopts a variable diameter claw structure, and the upper end of the motor claw pole 2 is set as a retractable claw structure.

[0025] The outer surface of the motor claw electrode 2 is provided with rounded corners 4; this removes burrs and facilitates use (and the rounded corner structure on the side of the motor claw electrode 2 reduces resistance during rotation and noise during high-speed operation); the principle of chamfering noise reduction is mainly to change the edge shape of the material part, reducing the reflection and penetration of sound waves, thereby improving the sound insulation effect. Specifically, chamfering of the material part refers to cutting or grinding the edge of the material part to make its edge beveled. This treatment makes the material easier to install and effectively improves the sound insulation effect of the material during use. The specific principle and effect of chamfering noise reduction: reducing noise penetration: chamfering Chamfering reduces sound wave reflection at material edges, thus reducing noise penetration. Sound waves are dispersed and absorbed when they encounter chamfered edges, reducing noise directly propagating into the room. It also reduces sound wave interference: chamfering improves the sound transmission characteristics of materials, reduces sound wave interference, and further enhances sound insulation. By changing the propagation path and reflection mode of sound waves, chamfering effectively controls sound wave propagation. Furthermore, it improves installation convenience: chamfering not only helps improve sound insulation but also makes materials easier to install. The smoother edges after cutting or grinding reduce friction and resistance during installation, lowering the difficulty of the project.

[0026] The outer surface of the motor claw electrode 2 is smoothly polished to remove burrs, making it easy to use.

[0027] The inner surface of the permanent magnet mounting recess 3 of the motor claw pole 2 is polished to remove burrs, and the permanent magnet is stably attracted during installation.

[0028] Eight sets of motor claw pole pieces 2 are distributed on the outer surface of the magnetic yoke 1; the distribution is uniform and the support is stable; by setting motor claw pole pieces 2 (motor claw poles refer to the components in the motor used to generate magnetic fields, usually formed by two stator iron cores axially cooperating left and right to form claw-shaped magnetic poles) on the outer surface of the magnetic yoke 1, permanent magnet mounting recesses 3 are set on the surface of the motor claw pole pieces 2, and the permanent magnet mounting recesses 3 are distributed on the left and right outer surfaces of the motor claw pole pieces 2; through an integrated casting structure, the permanent magnet mounting recesses 3 are integrally formed on both sides of the motor claw pole pieces 2, which is convenient for installation, easy to process, and low in cost.

[0029] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A motor claw pole with a permanent magnet mounting slot, comprising a yoke (1), characterized in that: The outer surface of the magnetic yoke (1) is provided with a motor claw pole (2), and the surface of the motor claw pole (2) is provided with a permanent magnet mounting recess (3). The permanent magnet mounting recess (3) is distributed on the left and right outer surfaces of the motor claw pole (2). The outer end of the motor claw pole (2) is provided with a curved bulge surface (20), and the inner surface of the motor claw pole (2) is provided with a toothed reinforcing rib (21).

2. The motor claw pole with permanent magnet mounting groove according to claim 1, characterized in that: The lower end surface of the motor claw pole (2) is provided with an inclined cut (5), and the permanent magnet mounting recess (3) is distributed on the surface of the inclined cut (5) of the motor claw pole (2).

3. The motor claw pole with permanent magnet mounting groove according to claim 1, characterized in that: The motor claw pole (2) adopts a variable diameter claw structure, and its upper end is set as a retractable claw structure.

4. The motor claw pole with permanent magnet mounting groove according to claim 1, characterized in that: The outer surface of the motor claw pole (2) is provided with rounded corners (4).

5. The motor claw pole with permanent magnet mounting groove according to claim 1, characterized in that: The outer surface of the motor claw pole (2) is smoothed by polishing.

6. The motor claw pole with permanent magnet mounting groove according to claim 1, characterized in that: The inner surface of the permanent magnet mounting recess (3) of the motor claw pole (2) is polished.

7. The motor claw pole with permanent magnet mounting groove according to claim 1, characterized in that: The motor claw poles (2) are arranged in eight groups on the outer surface of the magnetic yoke (1).

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