Anti-noise permanent magnet motor

Abstract

The utility model discloses an anti-noise permanent magnet motor which comprises a motor body, one end face of the motor body is detachably connected with an end cover, the axis of the end cover and the surface of a driving shaft of the motor body are detachably connected with a connecting ring, and the inner surface of the connecting ring is bonded with a first sealing ring. The gap between the end cover and the driving shaft is reduced through the first sealing ring bonded to the inner circle of the connecting ring, noise generated in the motor body is reduced, meanwhile, the corrugated design of the first sound insulation pipe can continuously reflect sound waves and increase the sound transmission distance, the purpose of weakening sound is achieved, and the noise reduction effect is achieved through weakening of the corrugated pipe. A second sound insulation pipe is in sliding connection with the inner surfaces of a first guide groove and a second guide groove through a guide column, and after the second sound insulation pipe rotates anticlockwise, the first sound insulation pipe and the second sound insulation pipe are lengthened and limited through a fastening assembly, so that the noise reduction effect is enhanced; the noise between the motor end cover and the driving shaft is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of permanent magnet motors, and particularly relates to a noise-proof permanent magnet motor. Background Technique

[0002] The permanent magnet synchronous motor uses permanent magnets to provide excitation, making the motor structure relatively simple, reducing the processing and assembly costs, and eliminating the slip rings and brushes that are prone to problems, improving the reliability of the motor operation.

[0003] Noise reduction of the permanent magnet motor is crucial during the operation of the motor. The end cover and the drive shaft of the permanent magnet motor are often the main factors generating noise during operation. In order to reduce the noise at their connection, we propose a noise-proof permanent magnet motor to reduce the noise generated between the end cover and the drive shaft. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a noise-proof permanent magnet motor, which aims to reduce the noise between the motor end cover and the drive shaft to solve the above-mentioned background technical problems.

[0005] The technical solution of the utility model to solve the above technical problems is as follows: A noise-proof permanent magnet motor includes a motor body. One end surface of the motor body is detachably connected with an end cover. At the center of the end cover and on the surface of the drive shaft of the motor body, there is a detachably connected connecting ring. A sealing ring I is bonded to the inner surface of the connecting ring, and the inner ring of the sealing ring I is closely attached to the surface of the drive shaft of the motor body. A sound insulation tube I is bonded to the end surface of the connecting ring and on the surface of the drive shaft of the motor body. A guiding groove I is opened at a position on the surface of the sound insulation tube I that is centrosymmetric with the center point of the sound insulation tube I as the axis. At the port of the guiding groove I and at a position that is 90 degrees to the guiding groove I, a guiding groove II is opened. A sound insulation tube II is slidably arranged on the surface of the sound insulation tube I. A hollow guiding column is fixedly connected to the inner surface of the sound insulation tube II. The outer surface of the guiding column can be slidably connected with the inner surfaces of the guiding groove I and the guiding groove II. The sound insulation tube I and the guiding groove I can be limited and fixed after rotation through a fastening component.

[0006] Preferably, the fastening component includes a fastening screw penetrating through the inner surface of the guiding column. A screw barrel is fixedly connected in an embedded manner to the inner surface of the sound insulation tube I. The outer surface of the fastening screw is threadedly connected with the inner surface of the screw barrel.

[0007] Preferably, the guiding column is slidably connected with the inner surface of the guiding groove I and rotates counterclockwise 90 degrees on the inner surface of the guiding groove II to correspond to the position of the screw barrel.

[0008] Preferably, a sealing ring II is bonded to the inner surface of the sound insulation tube II and near the port surface of the sound insulation tube I.

[0009] Preferably, the first sound insulation pipe is designed as a corrugated pipe body, and the materials of the first sound insulation pipe and the second sound insulation pipe are rigid sound insulation foam.

[0010] 1. The beneficial effects of the present utility model are as follows: By reducing the gap between the end cover and the drive shaft through the sealing ring bonded to the inner ring of the connecting ring, the noise generated inside the motor body is reduced. At the same time, the corrugated design of the first sound insulation pipe can continuously reflect sound waves and enhance the sound transmission distance, thereby achieving the purpose of weakening sound. After being weakened by the corrugated pipe, the noise decibels transmitted to the outside can be reduced. The second sound insulation pipe is slidably connected to the inner surfaces of the first guide groove and the second guide groove through the guide column. After rotating counterclockwise, the lengthening limit between the first sound insulation pipe and the second sound insulation pipe is carried out through the fastening assembly, thereby strengthening the noise reduction effect. By setting the above structures, the noise between the motor end cover and the drive shaft is reduced.

[0011] 2. By setting the surface of the fastening screw to be threadedly connected to the inner surface of the screw barrel, the position of the guide column after rotating counterclockwise by ninety degrees can be limited and fixed, thereby limiting the position between the second sound insulation pipe and the first sound insulation pipe.

[0012] 3. By setting the second sealing ring, the gap between the first sound insulation pipe and the second sound insulation pipe is reduced, thereby reducing the discharge of noise.

[0013] 4. By setting the materials of the first sound insulation pipe and the second sound insulation pipe to be rigid sound insulation foam, the rigid sound insulation foam material is not easily deformed while having sound insulation performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Wherein:

[0015] Figure 1 is a schematic diagram of the structure of the present utility model;

[0016] Figure 2 is a partial enlarged view of point A of the present utility model;

[0017] Figure 3 is a schematic diagram of the structure of the second sealing washer of the present utility model.

[0018] In the drawings, the list of components represented by each reference numeral is as follows:

[0019] 1. Motor body; 2. End cover; 3. Connecting ring; 4. First sealing ring; 5. First sound insulation pipe; 6. First guide groove; 7. Second guide groove; 8. Second sound insulation pipe; 9. Guide column; 10. Fastening screw; 11. Screw barrel; 12. Second sealing ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Hereinafter, embodiments of the anti-noise permanent magnet motor of the present utility model will be described with reference to the drawings.

[0021] Embodiment:

[0022] Figures 1-3 This utility model discloses a noise-proof permanent magnet motor, which includes a motor body 1. One end face of the motor body 1 is detachably connected with an end cover 2. At the axis center of the end cover 2 and on the surface of the driving shaft of the motor body 1, there is a detachably connected connecting ring 3. An inner sealing ring 4 is bonded to the inner surface of the connecting ring 3. The inner ring of the inner sealing ring 4 is closely attached to the surface of the driving shaft of the motor body 1. A sound insulation pipe 5 is bonded to the end face of the connecting ring 3 and on the surface of the driving shaft of the motor body 1. Guide grooves 6 are provided at positions on the surface of the sound insulation pipe 5 that are centrosymmetric with respect to the axis center point of the sound insulation pipe 5. At the port of the guide groove 6 and at a position that is 90 degrees to the guide groove 6, there is a guide groove 7. A sound insulation pipe 8 is slidably arranged on the surface of the sound insulation pipe 5. The sound insulation pipe 5 is designed as a corrugated pipe body. The materials of the sound insulation pipe 5 and the sound insulation pipe 8 are hard sound insulation foam. By setting the materials of the sound insulation pipe 5 and the sound insulation pipe 8 as hard sound insulation foam, the hard sound insulation foam material is not easily deformed while sound insulation. An inner sealing ring 12 is bonded to the inner surface of the sound insulation pipe 8 and near the port face of the sound insulation pipe 5. By setting the inner sealing ring 12, the gap between the sound insulation pipe 5 and the sound insulation pipe 8 is reduced, thereby reducing the discharge of noise. A hollow-structured guide post 9 is fixedly connected to the inner surface of the sound insulation pipe 8. The guide post 9 is slidably connected to the inner surface of the guide groove 6 and rotates counterclockwise by 90 degrees on the inner surface of the guide groove 7 and then corresponds to the position of the screw barrel 11. The outer surface of the guide post 9 can be slidably connected to the inner surfaces of the guide groove 6 and the guide groove 7. The sound insulation pipe 5 and the guide groove 6 can be limited and fixed after rotation through a fastening component; the fastening component includes a fastening screw 10 penetrating through the inner surface of the guide post 9. A screw barrel 11 is embedded and fixedly connected to the inner surface of the sound insulation pipe 5. The outer surface of the fastening screw 10 is threadedly connected to the inner surface of the screw barrel 11. By setting the surface of the fastening screw 10 to be threadedly connected to the inner surface of the screw barrel 11, the position of the guide post 9 after rotating counterclockwise by 90 degrees can be limited and fixed, so as to limit the position between the sound insulation pipe 8 and the sound insulation pipe 5.

[0023] The inner sealing ring 4 bonded to the inner ring of the connecting ring 3 reduces the gap between the end cover and the driving shaft, reducing the noise generated inside the motor body 1. At the same time, the corrugated design of the sound insulation pipe 5 can continuously reflect sound waves and enhance the propagation distance of sound, thereby achieving the purpose of weakening sound. After being weakened by the corrugated pipe, the noise decibels transmitted to the outside can be reduced. The sound insulation pipe 8 is slidably connected to the inner surfaces of the guide groove 6 and the guide groove 7 through the guide post 9 and, after rotating counterclockwise, the fastening component is used to lengthen and limit the position between the sound insulation pipe 5 and the sound insulation pipe 8, thereby enhancing the noise reduction effect. By setting the above structure, noise reduction between the motor end cover and the driving shaft is achieved.

[0024] Working principle: When the utility model is in use, the sealing ring I 4 bonded to the inner ring of the connecting ring 3 reduces the gap between the end cover and the drive shaft, reducing the noise generated inside the motor body 1. At the same time, the corrugated design of the sound insulation pipe I 5 can continuously reflect sound waves and enhance the propagation distance of sound, thereby achieving the purpose of weakening sound. After being weakened by the corrugated pipe, the noise decibels transmitted to the outside can be reduced. The sound insulation pipe II 8 is slidably connected to the inner surfaces of the guide groove I 6 and the guide groove II 7 through the guide post 9. After rotating counterclockwise, the surface of the fastening screw 10 is threadedly connected to the inner surface of the screw barrel 11, which can limit and fix the position of the guide post 9 after rotating counterclockwise by ninety degrees, thereby limiting the position between the sound insulation pipe II 8 and the sound insulation pipe I 5. Furthermore, the lengthened limit between the sound insulation pipe I 5 and the sound insulation pipe II 8 is achieved, thereby strengthening the noise reduction effect.

Claims

1. A noise-proof permanent magnet motor, comprising a motor body (1), one end face of the motor body (1) is detachably connected with an end cover (2), and it is characterized in that, A connecting ring (3) is detachably connected to the surface of the drive shaft of the motor body (1) at the axis of the end cover (2). A first sealing ring (4) is bonded to the inner surface of the connecting ring (3). The inner ring of the first sealing ring (4) is in close fit with the surface of the drive shaft of the motor body (1). A first sound insulation tube (5) is bonded to the end face of the connecting ring (3) and on the surface of the drive shaft of the motor body (1). A first guide groove (6) is provided on the surface of the first sound insulation tube (5) at a position that is centrosymmetric with respect to the axis of the first sound insulation tube (5). A second guide groove (7) is provided at a position that is 90 degrees to the port of the first guide groove (6). A second sound insulation tube (8) is slidably provided on the surface of the first sound insulation tube (5). A hollow guide post (9) is fixedly connected to the inner surface of the second sound insulation tube (8). The outer surface of the guide post (9) can be slidably connected to the inner surfaces of the first guide groove (6) and the second guide groove (7). The first sound insulation tube (5) and the first guide groove (6) can be limited and fixed after rotation through a fastening assembly.

2. The anti-noise permanent magnet motor according to claim 1, wherein, The fastening assembly includes a fastening screw (10) penetrating through the inner surface of the guide post (9). A screw barrel (11) is fixedly connected to the inner surface of the first sound insulation tube (5) in an embedded manner. The outer surface of the fastening screw (10) is threadedly connected to the inner surface of the screw barrel (11).

3. The anti-noise permanent magnet motor according to claim 2, characterized in that, The guide post (9) is slidably connected to the inner surface of the first guide groove (6) and rotates counterclockwise by 90 degrees on the inner surface of the second guide groove (7) to correspond to the position of the screw barrel (11).

4. A noise-proof permanent magnet motor according to claim 1, characterized in that, A second sealing ring (12) is bonded to the inner surface of the second sound insulation tube (8) near the port face of the first sound insulation tube (5).

5. The noise-proof permanent magnet motor according to claim 4, characterized in that The first sound insulation tube (5) is designed as a corrugated tube body. The materials of the first sound insulation tube (5) and the second sound insulation tube (8) are hard sound insulation foam.

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