Rotor punching sheet of permanent magnet motor

Abstract

The utility model relates to the technical field of rotor punching sheets, and discloses a permanent magnet motor rotor punching sheet, which comprises a main body, a through pin in threaded connection with the interior of the main body, a fitting disc in threaded connection with the top of the through pin, a limiting ring for preventing position deviation in a clamping manner in the middle of the fitting disc, and a fixing ring for preventing looseness at the top of the fitting disc. And a positioning rod for supporting is inserted into the inner wall of the fixing ring. According to the rotor punching sheet of the permanent magnet motor, through cooperative arrangement of the main body, the penetrating pin, the attaching disc, the limiting ring, the fixing ring and the positioning rod, the structural stability and the assembling convenience of the rotor punching sheet are ensured, part looseness caused by vibration in the motor operation process is reduced, the motor operation reliability is improved, and due to the use of the attaching disc and the limiting ring, the reliability of the rotor punching sheet is improved. Position deviation of the rotor during high-speed rotation is effectively prevented, the positioning precision of the rotor is enhanced, and meanwhile the limiting effect of the limiting ring and the fastening effect of the fixing ring supplement each other.

Description

Technical Field

[0001] The utility model relates to the technical field of rotor punching sheets, in particular to a permanent magnet motor rotor punching sheet. Background Art

[0002] In the design and manufacture of permanent magnet motors, the rotor punchings are the core components of the motor. The rationality of their structural design directly affects the efficiency, stability and life of the motor. When the motor is running at high speed, the traditional rotor punching structure is prone to problems such as component loosening and position displacement due to factors such as vibration and centrifugal force. This not only reduces the operating efficiency of the motor, but may also increase energy consumption and shorten the life of the motor. Therefore, developing a rotor punching with a stable structure, easy assembly, and the ability to effectively prevent component loosening and position displacement has become a problem to be solved in the field of motor design.

[0003] Chinese patent announcement No. CN201928101U discloses a permanent magnet motor rotor punching, including a rotor punching body, an axial hole is provided in the center of the rotor punching body, a keyway is provided in the axial hole, a plurality of salient poles are evenly distributed circumferentially on the outer periphery of the rotor punching body, a magnet placement groove closed on all sides is provided on the salient pole, and an air gap groove is provided between two adjacent salient poles. Compared with the previous punching structure, the relatively independent salient pole structure formed on the outer periphery of the punching sheet of the utility model can enhance the magnetic resistance performance of the motor rotor and enhance the torque output of the motor at low speed. The magnet placement groove closed on the outer periphery is provided on the salient pole of the punching sheet, so that the complete closed magnet placement groove formed after the punching sheet is stacked can be easily embedded with magnets, while ensuring that the magnets will not be separated from the rotor due to centrifugal force during the operation of the motor, and simplifying the processability of magnet placement. The U-shaped air gap between two adjacent salient poles can greatly reduce the leakage flux between adjacent N and S poles.

[0004] However, the utility model has the following problems when actually used:

[0005] In the utility model, the overall device does not have sufficient structural stability when in use to prevent the loosening of components during high-speed operation of the motor, which may cause the rotor position to shift, affecting the positioning accuracy and overall performance of the motor. Inaccurate positioning may cause the motor to generate vibration and noise when rotating at high speed, affecting the stability of the motor and the working environment. Utility Model Content

[0006] 1. Technical issues to be resolved

[0007] In order to overcome the above-mentioned defects of the prior art, the utility model provides a permanent magnet motor rotor punching sheet, which solves the problems in the prior art:

[0008] In this utility model, when the overall device is in use, it lacks sufficient structural stability to prevent loosening of components during the high-speed operation of the motor. This can lead to the offset of the rotor position, affecting the positioning accuracy and overall performance of the motor. The inaccurate positioning will cause vibrations and noises when the motor rotates at high speed, affecting the stability of the motor and the working environment.

[0009] (II) Technical Solution

[0010] To achieve the above objectives, this utility model is realized through the following technical solutions: A permanent magnet motor rotor punching sheet, including a main body, a through pin is threadedly connected inside the main body, a fitting disc is threadedly connected to the top of the through pin, a limiting ring for preventing position offset is clamped in the middle of the fitting disc, a fixing ring for preventing loosening is provided on the top of the fitting disc, and a positioning rod for support is inserted into the inner wall of the fixing ring.

[0011] Furthermore, a magnetic slot is opened at the top of the main body, a clamping slot is opened on the outer wall of the main body, and a positioning hole is opened at the top of the main body.

[0012] Furthermore, a shaft ring is threadedly connected to the outer wall of the through pin, and the top of the shaft ring is clamped with the bottom of the fitting disc.

[0013] Furthermore, a weight-reducing groove is opened at the top of the fitting disc, and a friction ring is clamped on the outer wall of the fitting disc.

[0014] Furthermore, an adhesive rubber ring is fixedly connected to the inner wall of the friction ring, and the inner wall of the adhesive rubber ring is bonded to the outer wall of the fitting disc.

[0015] Furthermore, a keyway is opened inside the limiting ring, and an additional plate is fixedly connected to the inner wall of the limiting ring.

[0016] Furthermore, a bolt is fixedly installed at the bottom of the fixing ring, and the bottom of the bolt is threadedly connected to the top of the fitting disc.

[0017] Furthermore, a support rod is inserted into the positioning rod, and a round hole is opened inside the support rod.

[0018] (III) Beneficial Effects

[0019] This utility model provides a permanent magnet motor rotor punching sheet, which has the following beneficial effects:

[0020] The rotor punching sheet of the permanent magnet motor ensures the structural stability and assembly convenience of the rotor punching sheet through the cooperation of the main body, through pins, fitting discs, limiting rings, fixing rings, and positioning rods, reduces the loosening of components caused by vibration during the operation of the motor, improves the reliability of the motor operation. The use of the fitting disc and the limiting ring effectively prevents the position deviation of the rotor during high-speed rotation, enhances the positioning accuracy of the rotor. At the same time, the limiting effect of the limiting ring and the fastening effect of the fixing ring complement each other, further preventing the loosening of components after long-term operation, reducing the energy consumption during motor startup and operation, reducing the friction between the rotor and the stator, improving the overall energy efficiency and service life. The cooperation between the main body and the positioning rod provides precise support, ensures the balance and stability of the motor rotor during high-speed rotation, and avoids vibration and noise problems caused by inaccurate positioning. Brief Description of the Drawings

[0021] Figure 1 is a schematic structural view of the present utility model;

[0022] Figure 2 is a schematic structural view of the main body of the present utility model;

[0023] Figure 3 is a schematic structural view of the through pin of the present utility model;

[0024] Figure 4 is a schematic structural view of the positioning rod of the present utility model;

[0025] Figure 5 is a schematic structural view of the fixing ring of the present utility model.

[0026] In the figure: 1, main body; 2, through pin; 3, fitting disc; 4, limiting ring; 5, fixing ring; 6, positioning rod; 7, magnetic slot; 8, card slot; 9, positioning hole; 10, shaft collar; 11, weight reduction groove; 12, friction ring; 13, adhesive rubber ring; 14, keyway; 15, additional plate; 16, bolt; 17, support rod. Detailed Description of the Preferred Embodiment

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0028] Please refer to Figures 1 to 5 , the embodiment of the present utility model provides a rotor punching sheet of a permanent magnet motor. The rotor punching sheet of the permanent magnet motor is applied to the scenario of the design and manufacture of the permanent magnet motor. In this embodiment, the structure of the rotor punching sheet of the permanent magnet motor is improved to make it have the advantages of balance and stability.

[0029] Embodiment 1:

[0030] Please refer to Figures 1 to 5 , the present utility model provides a technical solution: a permanent magnet motor rotor punching sheet, including a main body 1, a through pin 2 is threadedly connected inside the main body 1, a magnetic slot 7 is opened at the top of the main body 1, a card slot 8 is opened on the outer wall of the main body 1, a positioning hole 9 is opened at the top of the main body 1, a shaft collar 10 is threadedly connected to the outer wall of the through pin 2, and the top of the shaft collar 10 is clamped with the bottom of the fitting disc 3. Therefore, through the setting of the magnetic slot 7, it is convenient to install the permanent magnet. Through the setting of the card slot 8, it is used to cooperate with other components of the motor to prevent loosening at the docking position. A positioning hole 9 is opened at the top of the main body 1 for precise alignment with other components. Through the setting of the shaft collar 10, it is to ensure the stable connection between the fitting disc 3 and the through pin 2.

[0031] Embodiment 2:

[0032] In order to reduce the vibration and impact during the operation of the motor and extend the service life of the motor, the device fitting disc 3 and the limit ring 4 are provided;

[0033] The top of the through pin 2 is threadedly connected with a fitting disc 3. A limit ring 4 for preventing position deviation is clamped in the middle of the fitting disc 3. A weight reduction groove 11 is opened at the top of the fitting disc 3. A friction ring 12 is clamped on the outer wall of the fitting disc 3. An adhesive rubber ring 13 is fixedly connected to the inner wall of the friction ring 12, and the inner wall of the adhesive rubber ring 13 is bonded to the outer wall of the fitting disc 3. A key groove 14 is opened inside the limit ring 4, and an additional plate 15 is fixedly connected to the inner wall of the limit ring 4. Therefore, through the setting of the weight reduction groove 11, it is to reduce the overall weight and improve the motor efficiency. Through the setting of the friction ring 12, it is to enhance the friction with the limit ring 4 and reduce the wear between parts. Through the setting of the adhesive rubber ring 13, it is to enhance the connection strength between the fitting disc 3 and the friction ring 12. Through the cooperation of the key groove 14 and the additional plate 15, it is to perform limit clamping with the positioning rod 6 to effectively prevent the positioning rod 6 from shifting during rotation.

[0034] Embodiment 3:

[0035] In order to make the rotor punching sheet easy to disassemble and assemble during maintenance and repair, reduce the maintenance cost and time, the device fixed ring 5 and the positioning rod 6 are provided;

[0036] A fixing ring 5 for preventing loosening is provided at the top of the fitting disc 3. A positioning rod 6 for support is inserted into the inner wall of the fixing ring 5. A bolt 16 is fixedly installed at the bottom of the fixing ring 5, and the bottom of the bolt 16 is threadedly connected to the top of the fitting disc 3. A support rod 17 is inserted into the positioning rod 6, and a round hole is provided inside the support rod 17. Therefore, through the setting of the bolt 16, it is to fasten the connection between the fixing ring 5 and the fitting disc 3 to prevent loosening at the docking position. Through the setting of the support rod 17, it is to reduce the weight while maintaining the structural strength, realize the positioning and insertion between parts, and facilitate the subsequent driving operation.

[0037] In the present utility model, the working steps of the device are as follows:

[0038] First, pass the through pin 2 through the central hole of the main body 1 to ensure a tight threaded connection with the main body 1. Then, threadedly connect the fitting disc 3 to the top of the through pin 2 to ensure a stable connection between the fitting disc 3 and the through pin 2. Next, snap the limit ring 4 onto the middle of the fitting disc 3 and ensure there is no gap between the limit ring 4 and the fitting disc 3 to prevent position deviation. Again, put the fixing ring 5 on the top of the fitting disc 3 and fasten it with the bolt 16 to ensure the tightness between the fixing ring 5 and the fitting disc 3. Finally, insert the positioning rod 6 into the inner wall of the fixing ring 5 to ensure a stable connection between the positioning rod 6 and the fixing ring 5, and use the support rod 17 for auxiliary support to ensure the balance and stability of the motor rotor during high-speed rotation.

[0039] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A permanent magnet motor rotor punching sheet, comprising a main body (1), characterized in that: The inner thread of the main body (1) is connected to a through pin (2), the top of the through pin (2) is connected to a fitting disk (3), the middle of the fitting disk (3) is clamped with a limiting ring (4) for preventing position displacement, the top of the fitting disk (3) is provided with a fixing ring (5) for preventing loosening, and the inner wall of the fixing ring (5) is inserted with a positioning rod (6) for support.

2. A permanent magnet motor rotor punching sheet according to claim 1, characterized in that: The top of the main body (1) is provided with a magnetic groove (7), the outer wall of the main body (1) is provided with a clamping groove (8), and the top of the main body (1) is provided with a positioning hole (9).

3. The permanent magnet motor rotor punching sheet according to claim 1, characterized in that: The outer wall of the through pin (2) is threadedly connected with a shaft ring (10), and the top of the shaft ring (10) is clamped with the bottom of the bonding disk (3).

4. The permanent magnet motor rotor punching sheet according to claim 1, characterized in that: A weight-reducing groove (11) is provided on the top of the bonding disk (3), and a friction ring (12) is clamped on the outer wall of the bonding disk (3).

5. A permanent magnet motor rotor punching sheet according to claim 4, characterized in that: The inner wall of the friction ring (12) is fixedly connected with an adhesive rubber ring (13), and the inner wall of the adhesive rubber ring (13) is bonded to the outer wall of the bonding disk (3).

6. The permanent magnet motor rotor punching sheet according to claim 1, characterized in that: A key groove (14) is provided inside the limiting ring (4), and an additional plate (15) is fixedly connected to the inner wall of the limiting ring (4).

7. The permanent magnet motor rotor punching sheet according to claim 1, characterized in that: A bolt (16) is fixedly mounted on the bottom of the fixing ring (5), and the bottom of the bolt (16) is threadedly connected to the top of the fitting disk (3).

8. The permanent magnet motor rotor punching sheet according to claim 1, characterized in that: A support rod (17) is inserted into the interior of the positioning rod (6), and a round hole is opened in the interior of the support rod (17).

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