Axial flux motor

Abstract

The utility model discloses an axial magnetic flux motor, which comprises a stator (1) and a rotor (2), the stator (1) comprises a stator framework (3), a plurality of stator teeth (4) are distributed on the stator framework (3), the stator teeth (4) and the stator framework (3) are arranged vertically, a stator winding (5) is wound outside the stator teeth (4), and the rotor (2) comprises a rotor shell (6). A plurality of permanent magnets (7) are annularly distributed on the periphery of one side, close to the stator (1), of the rotor shell (6), the stator framework (3) is detachably connected with a stator yoke (8), the stator teeth (4) are annularly distributed on the periphery of the stator yoke (8) and are connected with the stator yoke (8) in a buckled mode, the outer portion of each stator tooth (4) is connected with an insulation sleeve (9) in a buckled mode, and the stator windings (5) are wound on the outer portions of the insulation sleeves (9). The utility model has the characteristics of high processing efficiency and low processing cost.

Description

Technical Field

[0001] This utility model relates to a household appliance motor, and more particularly to an axial flux motor. Background Technology

[0002] Currently, the motors used in household appliances such as washing machines are generally radial flux motors. However, due to limitations in their electromagnetic structure, radial flux motors have relatively low efficiency, thus failing to meet manufacturers' performance requirements for appliance motors. In contrast, with the gradual rise of new energy sources, axial flux motors, due to their higher efficiency and more compact structure, have gained favor among appliance manufacturers. This has made the application of axial flux motors in the home appliance field a key research and development goal for many appliance companies.

[0003] However, existing axial flux motors have a drawback: the conventional method for manufacturing the stator core involves stamping long strips of silicon steel to form sequentially connected toothed plates with varying spacing. These plates are then rolled into a circle, ensuring that the toothed plates corresponding to any given stator tooth fit together radially to form the tooth structure. This method is inefficient, requiring lengthy winding times to achieve the desired shape. Furthermore, the varying spacing between adjacent toothed plates significantly increases the stamping difficulty and precision requirements for the toothed plates. If the spacing between two toothed plates is incorrect, subsequent toothed plates will be misaligned during winding, and the manufacturer cannot repair this misalignment. This drastically increases the manufacturing time and cost of axial flux motors, making them unsuitable for the home appliance motor industry.

[0004] Therefore, existing axial flux motors suffer from low processing efficiency and high processing costs. Utility Model Content

[0005] The purpose of this invention is to provide an axial flux motor. It features high processing efficiency and low processing cost.

[0006] The technical solution of this utility model is as follows: An axial flux motor includes a stator and a rotor. The stator includes a stator frame with a plurality of stator teeth distributed on it. The stator teeth and the stator frame are arranged perpendicularly to each other. A stator winding is wound around the outside of the stator teeth. The rotor includes a rotor housing with a plurality of permanent magnets arranged in a ring around the rotor housing near the stator. A stator yoke is detachably connected to the stator frame. The stator teeth are arranged in a ring around the stator yoke and fastened to it. An insulating sleeve is fastened to the outside of each stator tooth. The stator winding is wound around the outside of the insulating sleeve.

[0007] In the aforementioned axial flux motor, a plurality of first reinforcing ribs are distributed on one side of the stator frame, and an mounting groove is formed between adjacent first reinforcing ribs. The stator yoke is fastened and connected in the mounting groove and screwed to the stator frame.

[0008] In the aforementioned axial flux motor, the inner side of the stator yoke has a number of inwardly protruding limiting plates arranged in a ring. Each limiting plate has a mounting hole for a mating screw, and the limiting plates and mounting grooves are interlocked.

[0009] In the aforementioned axial flux motor, the stator frame has several second reinforcing ribs distributed on the side away from the stator frame, and the middle of the second reinforcing ribs forms a sleeve for the mating screw.

[0010] In the aforementioned axial flux motor, the stator yoke has several slots arranged in a ring around its perimeter, and the ends of the stator teeth are fastened to the slots by locking blocks.

[0011] In the aforementioned axial flux motor, the stator teeth form a cover plate at the end away from the stator yoke, and the insulating sleeve includes two separate sleeves, the outer ends of which are fastened to the outside of the cover plate and inserted into each other.

[0012] Compared with the prior art, this utility model has the following characteristics:

[0013] (1) This utility model enables manufacturers to process each stator tooth individually by means of the structure of stator frame, stator yoke and stator teeth, and to connect the stator teeth to the stator yoke by means of fastening and welding, which can effectively improve the processing efficiency and reduce the processing cost compared with the existing processing method of stator core.

[0014] (2) By limiting the structure of the insulating sleeve, each insulating sleeve can be processed and fastened onto the stator teeth, thereby ensuring its insulation function while facilitating assembly by operators.

[0015] (3) By limiting the structure of the stator frame, the stator frame can be reinforced by the cooperation of the first and second reinforcing ribs, thereby improving the structural strength and deformation resistance of the stator frame. On the other hand, the stator yoke can be connected to the stator frame by the mounting groove, thereby using the stator frame to circumferentially limit the stator yoke and ensure the structural stability and positioning accuracy of the stator yoke.

[0016] Therefore, this utility model has the characteristics of high processing efficiency and low processing cost. Attached Figure Description

[0017] Figure 1 This is a side view of the utility model;

[0018] Figure 2 This is a view of the utility model from the other side;

[0019] Figure 3 This is the external view of the stator;

[0020] Figure 4 This is a cross-sectional view of the stator;

[0021] Figure 5 This is a schematic diagram showing the connection between the stator teeth, stator yoke, and stator frame.

[0022] The labels in the attached diagram are as follows: 1-Stator, 2-Rotor, 3-Stator frame, 4-Stator teeth, 5-Stator winding, 6-Rotor housing, 7-Permanent magnet, 8-Stator yoke, 9-Insulating sleeve, 10-First reinforcing rib, 11-Mounting groove, 12-Limiting plate, 13-Second reinforcing rib, 14-Sleeve, 15-Slot, 16-Cover plate. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0024] Example. An axial flux motor, configured as follows: Figure 1 As shown, the device includes a stator 1 and a rotor 2. The stator 1 includes a stator frame 3 with a plurality of stator teeth 4 distributed on it. The stator teeth 4 and the stator frame 3 are arranged perpendicularly to each other. Stator windings 5 ​​are wound around the outside of the stator teeth 4. The rotor 2 includes a rotor housing 6, which is arranged vertically alongside the stator frame 3. The rotor housing 6 has a plurality of permanent magnets 7 arranged in a ring around the side near the stator 1 to engage with the stator teeth 4. A stator yoke 8 is detachably connected to the stator frame 3. The stator teeth 4 are arranged in a ring around the stator yoke 8 and are fastened to the stator yoke 8. An insulating sleeve 9 is fastened to the outside of each stator tooth 4. The insulating sleeves 9 outside adjacent stator teeth 4 are separated from each other. The stator windings 5 ​​are wound around the outside of the insulating sleeves 9.

[0025] The stator teeth 4 can be stamped from tin-steel sheets or processed from SMC soft magnetic composite materials using powder metallurgy; the stator yoke 8 can be stamped from tin-steel sheets.

[0026] The stator yoke 8 is composed of multiple stator yoke plates arranged in a ring and connected end to end. Adjacent stator yoke plates 8 are interlocked and welded together via dovetail grooves.

[0027] A plurality of first reinforcing ribs 10 are distributed on one side of the stator frame 3, and an mounting groove 11 is formed between adjacent first reinforcing ribs 10. The stator yoke 8 is fastened and connected in the mounting groove 11 and screwed to the stator frame 3.

[0028] The inner side of the stator yoke 8 has a number of inwardly protruding limiting pieces 12 arranged in a ring. Each limiting piece 12 is provided with a mounting hole for a matching screw. The limiting pieces 12 and the mounting groove 11 are interlocked. The mounting groove 11 is used to circumferentially limit the stator yoke 8 after the limiting pieces 12 are interlocked.

[0029] The stator frame 3 has a plurality of second reinforcing ribs 13 distributed on the side away from the stator frame 3. The middle part of the second reinforcing rib 13 forms a sleeve 14 for matching screws. The first reinforcing rib 10, the second reinforcing rib 13, the sleeve 14 and the stator frame 3 are integrally injection molded.

[0030] The stator yoke 8 has several slots 15 arranged in a ring around its perimeter. The ends of the stator teeth 4 are connected to the slots 15 by a locking block. The locking block and the slots 15 are interference-fitted, and the stator teeth 4 and the stator yoke 8 are fixed by welding after being inserted into each other.

[0031] The stator tooth 4 forms a cover plate 16 at the end away from the stator yoke 8. The insulating sleeve 9 includes two separate sleeves. One end of the two sleeves forms a base plate for limiting the stator winding 5. The other ends of the two sleeves are fastened to the outside of the cover plate 16 and inserted into each other.

[0032] The working principle of this utility model is as follows: By defining the connection structure of the stator frame 3, stator teeth 4, and stator yoke 8, this utility model allows the stator teeth 4 and stator yoke 8 to be individually machined during processing, and then pressed and welded together to form the stator core structure of the axial flux motor. Compared with the existing method of rolling silicon steel sheets, this method eliminates the corresponding rolling process and ensures that the shape of each stator tooth is consistent, thus effectively reducing the processing difficulty and cost for manufacturers of the stator core. After the stator core is formed, the stator yoke 8 is fastened into the mounting groove 11 of the stator frame 3 and fixed with screws. Then, an insulating sleeve 9 is fitted over the outside of each stator tooth 4, and the stator winding 5 is wound around the outside of the insulating sleeve 9 to form the motor stator 1.

[0033] Manufacturers can also, depending on installation requirements, first place the insulating sleeve 9 on the outside of the stator teeth 4, and then fasten the stator teeth 4 together with the insulating sleeve 9 onto the stator yoke 8; or first wind the stator winding 5 into shape using an external mold, and then fasten the stator teeth 4, the insulating sleeve 9 and the stator winding 5 together onto the stator yoke 8 after they are interlocked, which can also achieve the effect of rapid stator assembly.

Claims

1. An axial flux motor, comprising a stator (1) and a rotor (2), wherein the stator (1) comprises a stator frame (3), a plurality of stator teeth (4) are distributed on the stator frame (3), the stator teeth (4) and the stator frame (3) are arranged perpendicularly to each other, and stator windings (5) are wound around the outside of the stator teeth (4), and the rotor (2) comprises a rotor housing (6), wherein a plurality of permanent magnets (7) are arranged in a ring around the rotor housing (6) on the side near the stator (1), characterized in that: The stator frame (3) is detachably connected to a stator yoke (8). The stator teeth (4) are distributed in a ring around the stator yoke (8) and are fastened to the stator yoke (8). An insulating sleeve (9) is fastened to the outside of each stator tooth (4). The stator winding (5) is wound around the outside of the insulating sleeve (9).

2. An axial flux motor according to claim 1, characterized in that: The stator frame (3) has a plurality of first reinforcing ribs (10) distributed on one side, and an mounting groove (11) is formed between adjacent first reinforcing ribs (10). The stator yoke (8) is fastened and connected in the mounting groove (11) and screwed to the stator frame (3).

3. An axial flux motor according to claim 2, characterized in that: The inner side of the stator yoke (8) has a number of inwardly protruding limiting pieces (12) arranged in a ring. Each limiting piece (12) is provided with a mounting hole for a matching screw. The limiting piece (12) and the mounting groove (11) are interlocked.

4. An axial flux motor according to claim 2, characterized in that: The stator frame (3) has several second reinforcing ribs (13) distributed on the side away from the stator frame (3), and the middle part of the second reinforcing ribs (13) forms a sleeve (14) for the mating screw.

5. An axial flux motor according to claim 1, characterized in that: The stator yoke (8) has several slots (15) arranged in a ring around its perimeter, and the ends of the stator teeth (4) are fastened to the slots (15) by a locking block.

6. An axial flux motor according to claim 1, characterized in that: The stator tooth (4) forms a cover plate (16) at the end away from the stator yoke (8), and the insulating sleeve (9) includes two separate sleeves, the outer ends of which are fastened to the outside of the cover plate (16) and inserted into each other.

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