A claw pole generator claw pole with permanent magnet mounting slot

Abstract

This application relates to the field of claw pole technology for claw pole generators, and in particular to a claw pole generator claw pole with a permanent magnet mounting slot. A first permanent magnet mounting slot is provided on the first claw pole, and a second permanent magnet mounting slot is provided on the second claw pole. The second permanent magnet mounting slot has a second engaging open end and a second closed end. The first permanent magnet mounting slot has a first engaging open end. The end of the first claw pole furthest from the first engaging open end has an opening in the first mounting slot. By modifying the structure of the claw pole permanent magnet mounting slot, the rotor manufacturing process is changed. There is no interference from the permanent magnet during claw pole assembly, simplifying equipment and tooling requirements, reducing manufacturing difficulty, and improving efficiency and yield. Fan welding can be performed before assembling the permanent magnet, and the permanent magnet magnetic field is not affected by the welding magnetic field. The welding equipment is simple. When turning the outer diameter of the rotor, the permanent magnet is not yet installed, and iron filings are not attracted by the permanent magnet; they can be removed using conventional high-pressure gas, eliminating the need for manual sorting and minimizing residual risk.

Description

Technical Field

[0001] This utility model relates to the field of claw pole technology for claw pole generators, and in particular to a claw pole generator claw pole with a permanent magnet mounting groove. Background Technology

[0002] The current generator claw pole with permanent magnet mounting slot has the mounting slot open on one side of a single claw pole, and the root of the claw pole is closed. The two claw poles are installed opposite each other to form a closed permanent magnet mounting slot.

[0003] In this type of rotor manufacturing, the permanent magnet needs to be placed on one claw pole first, and then another claw pole needs to be installed.

[0004] The rotor manufacturing process is as follows: permanent magnet placement - claw pole assembly - intermediate shaft pressing - fan welding - insulating varnish immersion and curing - outer diameter turning - manual removal of iron filings.

[0005] Existing generator claw poles have the following disadvantages:

[0006] 1. After the permanent magnets are placed on one side of the claw poles, when they are combined with the other claw pole, complex servo equipment is needed to limit all the permanent magnets to avoid them being squeezed and broken, which makes the assembly difficult.

[0007] 2. After the permanent magnet is installed, the fan is welded. The strong magnetic field generated by the welding current will seriously affect the magnetic field of the permanent magnet. Special welding equipment is required to reduce the influence of the welding magnetic field.

[0008] 3. Iron filings generated during external turning will be attracted to the permanent magnet due to magnetic force. High-pressure air blowing is not effective and manual removal is required, which is time-consuming and labor-intensive. If any are missed, the iron filings will get stuck between the stator and rotor as the rotor rotates at high speed, causing serious consequences such as rotor blockage, friction overheating leading to insulation failure, short circuit, and fire.

[0009] Therefore, in view of the shortcomings of the existing technology, it is necessary to provide a claw pole for a generator with a permanent magnet mounting slot to solve the shortcomings of the existing technology. Utility Model Content

[0010] The purpose of this invention is to overcome the shortcomings of existing technologies by providing a claw pole for a generator with a permanent magnet mounting slot. This claw pole for a generator with a permanent magnet mounting slot modifies the structure of the claw pole permanent magnet mounting slot and changes the rotor manufacturing process. There is no interference from the permanent magnet during claw pole assembly, the equipment tooling requirements are simple, the manufacturing difficulty is reduced, and the efficiency and pass rate are improved. The fan can be welded first and then the permanent magnet is assembled. The magnetic field of the permanent magnet is not affected by the welding magnetic field. The welding equipment is simple. When turning the outer diameter of the rotor, the permanent magnet has not yet been installed. The iron filings are not attracted by the permanent magnet and can be blown away with conventional high-pressure gas. There is no need for manual picking, and the risk of residue is small.

[0011] The above-mentioned objectives of this utility model are achieved through the following technical means.

[0012] A claw pole type generator claw pole with a permanent magnet mounting slot is provided. A first permanent magnet mounting slot is provided on a first claw pole, and a second permanent magnet mounting slot is provided on a second claw pole. The second permanent magnet mounting slot is provided with a second snap-fit ​​open end and a second closed end. The first permanent magnet mounting slot is provided with a first snap-fit ​​open end. The end of the first claw pole away from the first snap-fit ​​open end is provided with a first mounting slot opening.

[0013] Specifically, the opening of the first mounting groove is connected to the first permanent magnet mounting groove, and a first latch is provided at the intersection of the opening of the mounting groove and the first permanent magnet mounting groove. A permanent magnet body is movably installed between the first permanent magnet mounting groove and the second permanent magnet mounting groove, and the permanent magnet body is simultaneously engaged with the first latch and the second closed end.

[0014] Specifically, a permanent magnet protective plate is installed on the permanent magnet body.

[0015] This invention modifies the structure of the claw pole permanent magnet mounting slot, changing the rotor manufacturing process. There is no interference from the permanent magnet during claw pole assembly, simplifying equipment tooling requirements, reducing manufacturing difficulty, and improving efficiency and yield. The fan can be welded first and then the permanent magnet can be assembled. The magnetic field of the permanent magnet is not affected by the welding magnetic field, and the welding equipment is simple. When turning the outer diameter of the rotor, the permanent magnet has not yet been installed, and the iron filings are not attracted by the permanent magnet. They can be blown away with conventional high-pressure gas without manual picking, and the risk of residue is small. Attached Figure Description

[0016] The present invention will be further described with reference to the accompanying drawings, but the contents of the drawings do not constitute any limitation on the present invention.

[0017] Figure 1 This is a three-dimensional structural diagram of the first and second claw poles of a claw-pole generator with a permanent magnet mounting groove, according to this utility model.

[0018] Figure 2 This is a three-dimensional structural diagram of the first claw pole of a claw pole type generator with a permanent magnet mounting groove according to the present invention.

[0019] Figure 3 This is a three-dimensional structural diagram of the second claw pole of a claw pole type generator with a permanent magnet mounting groove according to this utility model.

[0020] Figure 4 This is a schematic diagram of the permanent magnet body of the claw pole of a claw pole generator with a permanent magnet mounting groove entering the locking tenon.

[0021] Figure 5This is a three-dimensional structural diagram of the permanent magnet body of the claw pole of a claw pole generator with a permanent magnet mounting groove according to the present invention.

[0022] from Figures 1 to 5 Including:

[0023] 1. First claw pole;

[0024] 2. Second claw pole;

[0025] 3. First permanent magnet mounting slot;

[0026] 4. Second permanent magnet mounting slot;

[0027] 5. Second snap-fit ​​open end;

[0028] 6. Second closed end;

[0029] 7. First snap-fit ​​open end;

[0030] 8. First mounting slot opening;

[0031] 9. First tenon;

[0032] 10. Permanent magnet body;

[0033] 11. Permanent magnet protective sheet. Detailed Implementation

[0034] The present invention will be further described in conjunction with the following embodiments.

[0035] Example 1:

[0036] like Figure 1-5 As shown, a claw pole type generator claw pole with a permanent magnet mounting groove is provided. The first claw pole 1 is provided with a first permanent magnet mounting groove 3, the second claw pole 2 is provided with a second permanent magnet mounting groove 4, the second permanent magnet mounting groove 4 is provided with a second snap-fit ​​open end 5 and a second closed end 6, the first permanent magnet mounting groove 3 is provided with a first snap-fit ​​open end 7, and the end of the first claw pole 1 away from the first snap-fit ​​open end 7 is provided with a first mounting groove opening 8.

[0037] This application is used for generator rotors, where the first claw pole 1 and the second claw pole 2 are engaged, the second permanent magnet mounting groove 4 of the second claw pole 2 is open on one side, the second engagement open end 5 is open to facilitate the entry of the permanent magnet body 10, the second closed end 6 limits the permanent magnet body 10, and the first mounting groove opening 8 of the first claw pole 1 allows the permanent magnet body 10 to be installed after the first claw pole 1 and the second claw pole 2 are engaged.

[0038] The first mounting groove opening 8 is connected to the first permanent magnet mounting groove 3. A first latch 9 is provided at the intersection of the mounting groove opening and the first permanent magnet mounting groove 3. A permanent magnet body 10 is movably installed between the first permanent magnet mounting groove 3 and the second permanent magnet mounting groove 4. The permanent magnet body 10 is simultaneously engaged with the first latch 9 and the second closed end 6.

[0039] The first latch 9 allows the permanent magnet body 10 to be axially limited after installation, while not affecting the sliding installation of the permanent magnet body 10. The permanent magnet body 10 slides into the first mounting groove opening 8 of the first claw pole 1 and finally touches the second closed end 6 of the second claw pole 2. The permanent magnet body 10 passes over the first latch 9 of the first claw pole 1 and falls into the first permanent magnet mounting groove 3 and the second permanent magnet mounting groove 4, thus achieving axial and radial limitation.

[0040] A permanent magnet protective plate 11 is installed on the permanent magnet body 10.

[0041] When using this application, the rotor manufacturing process can be changed to: claw pole assembly - intermediate shaft pressing - fan welding - outer diameter turning - permanent magnet placement - insulating varnish immersion and curing - removal of varnish nodules on the outer diameter of the rotor.

[0042] This invention modifies the structure of the claw pole permanent magnet mounting slot, changing the rotor manufacturing process. There is no interference from the permanent magnet during claw pole assembly, simplifying equipment tooling requirements, reducing manufacturing difficulty, and improving efficiency and yield. The fan can be welded first and then the permanent magnet can be assembled. The magnetic field of the permanent magnet is not affected by the welding magnetic field, and the welding equipment is simple. When turning the outer diameter of the rotor, the permanent magnet has not yet been installed, and the iron filings are not attracted by the permanent magnet. They can be blown away with conventional high-pressure gas without manual picking, and the risk of residue is small.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A claw pole of a claw pole type generator with permanent magnet mounting slot, the generator rotor comprising a first claw pole and a second claw pole which are movably engaged, characterized in that: The first claw pole has a first permanent magnet mounting groove, the second claw pole has a second permanent magnet mounting groove, the second permanent magnet mounting groove has a second snap-fit ​​open end and a second closed end, the first permanent magnet mounting groove has a first snap-fit ​​open end, and the end of the first claw pole away from the first snap-fit ​​open end has a first mounting groove opening.

2. The claw pole of the claw-pole generator with permanent magnet mounting slot according to claim 1, characterized in that: The first mounting slot opening is connected to the first permanent magnet mounting slot. A first latch is provided at the intersection of the mounting slot opening and the first permanent magnet mounting slot. A permanent magnet body is movably installed between the first permanent magnet mounting slot and the second permanent magnet mounting slot. The permanent magnet body is simultaneously engaged with the first latch and the second closed end.

3. The claw-pole of the claw-pole generator with permanent magnet mounting slot according to claim 2, characterized in that: The permanent magnet body is equipped with a permanent magnet protective plate.

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