Low-noise motor

Abstract

The utility model discloses a low-noise motor, which relates to the technical field of motor noise reduction, and comprises an inner rotor motor, the inner rotor motor comprises a stator shell, a stator coil and a rotor, the stator coil is wound on a winding plate on the inner side of the stator shell, and the rotor is rotatably connected to the middle part of the stator shell; the sound absorption assembly comprises a connecting strip, a clamping groove, a clamping block, an arc-shaped box, micropores, glass fiber cotton and sealing plates, the arc-shaped box is inserted between every two winding plates in the stator shell, the micropores are formed in arc plates on the two sides of the arc-shaped box, the glass fiber cotton is filled in the arc-shaped box, and the sealing plates are fixed to the two ends of the arc-shaped box. According to the utility model, the sound absorption assembly is added inside the stator housing, and noise generated inside the stator housing is absorbed through the micropores arranged on the arc-shaped plate and the glass fiber cotton, so that the problem that the size is enlarged due to the addition of a damping structure outside the motor is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of motor noise reduction technology, and in particular relates to a low-noise motor. Background Technology

[0002] When the electronic system is running, noise is generated by vibration caused by the alternation of magnetic lines of force between the stator and rotor, bearing friction, rotor imbalance or carbon brush contact noise, and airflow turbulence during high-speed rotation.

[0003] Existing methods to reduce vibration radiation in motors include increasing the thickness of the casing or adding reinforcing ribs, improving structural rigidity, and installing rubber pads, springs, or hydraulic vibration isolators between the motor and the mounting surface. However, these methods increase the size of the motor and occupy more space. Therefore, a low-noise motor is needed to solve these problems. Utility Model Content

[0004] The purpose of this invention is to provide a low-noise motor by adding a sound-absorbing component inside the stator housing. The noise generated inside the stator housing is absorbed by the micropores opened on the arc plate and the glass fiber cotton, thereby reducing the increased volume of the motor's exterior due to the addition of the shock-absorbing structure.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] An internal rotor motor includes a stator housing, stator coils, and a rotor. The stator coils are wound on a winding plate inside the stator housing, and the rotor is rotatably connected to the middle of the stator housing.

[0007] The sound-absorbing component includes an arc-shaped box, micropores, glass fiber cotton, and sealing plates. The arc-shaped box is inserted between two winding plates inside the stator housing. The micropores are opened on the arc plates on both sides of the arc-shaped box. The glass fiber cotton is filled inside the arc-shaped box, and the sealing plates are fixed at both ends of the arc-shaped box.

[0008] By adopting the above technical solution, the stator housing, stator coils and rotor constitute the main body of the internal rotor motor. The arc-shaped box has two through openings at both ends and is filled with glass fiber cotton. The glass fiber cotton can absorb noise, and the micropores can absorb sound and facilitate heat transfer. The sealing plate plays a sealing role.

[0009] Preferably, the sound-absorbing component further includes a connecting strip, a slot, and a block. The connecting strip is fixed inside the stator housing and located between two winding plates. The slot is opened in the middle of the connecting strip. The block is inserted into the slot and fixed with screws. One end of the block is fixed to the middle of the outer side of the arc-shaped box.

[0010] By adopting the above technical solution, the slot opened on the inner side of the connecting strip is used to connect the card block.

[0011] Preferably, the sound-absorbing component further includes a silicone pad, which is fixed to the side of the arc-shaped box away from the card block.

[0012] By adopting the above technical solution, the silicone pad has an anti-slip effect.

[0013] Preferably, the inner rotor motor further includes a sealing cover, which is fixed to both ends of the stator housing and has a hole in the middle, into which a bearing is fixed.

[0014] By adopting the above technical solution, the sealing cover is used to seal the stator housing.

[0015] Preferably, the internal rotor motor further includes an output shaft, which is fixed in the middle of the rotor and rotatably connected to the middle of one side of the sealing cover.

[0016] By adopting the above technical solution, the output shaft facilitates the connection of the rotor to external equipment.

[0017] Preferably, it also includes a stabilizing component, which includes a through hole, a rod, and a connecting ring. The through hole is located in the middle of the upper end plate, the rod is inserted into the through hole, and the connecting ring is fixed to the upper end of the rod.

[0018] By adopting the above technical solution, the insertion rod is inserted into the through hole, so that the connecting ring connects all the sound-absorbing components together.

[0019] Preferably, the stabilizing component further includes a spring post and a support ring, with one end of the spring post fixed to the upper end of the connecting ring and the support ring fixed to the other end of the spring post.

[0020] By adopting the above technical solution, the spring column has a telescopic function, which holds the support ring against the sealing cover.

[0021] Preferably, the support ring is sleeved on the outside of the output shaft, and the upper end of the support ring is attached to the inner top surface of the sealing cover above.

[0022] By adopting the above technical solution, the fixed sealing cover uses the support ring and spring column to press the connecting ring against the sealing plate, thereby securing the arc-shaped box.

[0023] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0024] This invention utilizes a sound-absorbing component to fix a sealing plate at one end of an arc-shaped box. The arc-shaped box is filled with fiberglass cotton, and the sealing plate at the other end is fixed. A connecting strip is then screwed into the slot on the inside of the stator housing. The arc-shaped box is held in place, and the locking block is inserted into the slot and secured with screws. Noise generated during motor operation enters the arc-shaped box through micropores and is absorbed by the fiberglass cotton. This design, by installing the sound-absorbing component inside the stator housing, directly absorbs noise generated within the stator housing while avoiding increasing the external volume of the motor.

[0025] This utility model, through the setting of a stabilizing component, allows the hand-held connecting ring to insert the plug rod into the through hole, and the sealing cover to be fitted onto the output shaft and fixed to the stator housing. The sealing cover pushes the support ring and spring column, pressing the connecting ring against the sealing plate. This setting can increase the stability of the arc-shaped box inside the stator housing and prevent the arc-shaped box from loosening and causing vibration noise when the motor is running.

[0026] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the interior of the stator housing of this utility model;

[0028] Figure 2 This is a schematic diagram of the appearance of the present utility model;

[0029] Figure 3 This is a schematic diagram showing the location of the sound-absorbing component of this utility model;

[0030] Figure 4 This is a schematic diagram of the sound-absorbing component structure of this utility model;

[0031] Figure 5 This is a schematic diagram of the stabilizing component structure of this utility model.

[0032] In the diagram: 10. Stator housing; 11. Stator coil; 12. Rotor; 13. Sealing cover; 14. Output shaft; 20. Connecting strip; 21. Slot; 22. Arc-shaped box; 23. Micro-hole; 24. Glass fiber cotton; 25. Sealing plate; 26. Locking block; 27. Silicone pad; 30. Through hole; 31. Insert rod; 32. Connecting ring; 33. Spring post; 34. Support ring. Detailed Implementation

[0033] 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.

[0034] Example 1:

[0035] Please see Figure 1-4As shown, a low-noise motor includes an inner rotor motor, which includes a stator housing 10, a stator coil 11, and a rotor 12. The stator coil 11 is wound on a winding plate inside the stator housing 10, and the rotor 12 is rotatably connected to the middle of the stator housing 10. The inner rotor motor also includes a sealing cover 13, which fixes both ends of the stator housing 10 and has a hole in the middle, in which a bearing is fixed. The inner rotor motor also includes an output shaft 14, which is fixed to the middle of the rotor 12 and rotatably connected to the middle of one side of the sealing cover 13.

[0036] The sound-absorbing assembly includes an arc-shaped box 22, micro-holes 23, fiberglass wool 24, and a sealing plate 25. The arc-shaped box 22 is inserted between two winding plates inside the stator housing 10. The micro-holes 23 are formed on the arc plates on both sides of the arc-shaped box 22. The fiberglass wool 24 is filled inside the arc-shaped box 22. The sealing plate 25 is fixed to both ends of the arc-shaped box 22. The sound-absorbing assembly also includes a connecting strip 20, a slot 21, and a locking block 26. The connecting strip 20 is fixed inside the stator housing 10 and located between two winding plates. The slot 21 is formed in the middle of the connecting strip 20. The locking block 26 is inserted into the slot 21 and fixed with screws. One end of the locking block 26 is fixed to the middle of the outer side of the arc-shaped box 22. The component also includes a silicone pad 27, which is fixed to the side of the arc-shaped box 22 away from the locking block 26. The sealing plate 25 at one end of the arc-shaped box 22 is fixed, and glass fiber cotton 24 is filled inside the arc-shaped box 22. The sealing plate 25 at the other end is fixed, and the connecting strip 20 is fixed to the inside of the stator housing 10 from the slot 21 with screws. Holding the arc-shaped box 22, the locking block 26 is inserted into the slot 21 and fixed with screws. The noise generated when the motor is running is input into the arc-shaped box 22 through the micro-hole 23 and absorbed by the glass fiber cotton 24. The sound-absorbing component is installed inside the stator housing 10, which can directly absorb the noise generated inside the stator housing 10, while avoiding increasing the external volume of the motor.

[0037] Example 2:

[0038] Please see Figure 4-5As shown, a low-noise motor further includes a stabilizing component, which includes a through hole 30, a plug rod 31, and a connecting ring 32. The through hole 30 is located in the middle of the upper end sealing plate 25, the plug rod 31 is inserted into the through hole 30, and the connecting ring 32 is fixed to the upper end of the plug rod 31. The stabilizing component also includes a spring post 33 and a support ring 34. One end of the spring post 33 is fixed to the upper end of the connecting ring 32, and the support ring 34 is fixed to the other end of the spring post 33. The support ring 34 is sleeved on the output shaft. 14 is placed on the outside, and the upper end of the support ring 34 is attached to the inner top surface of the sealing cover 13 above; hold the connecting ring 32, insert the plug rod 31 into the through hole 30, the sealing cover 13 is put on the output shaft 14 and fixed on the stator housing 10, the sealing cover 13 pushes the support ring 34 and the spring column 33, and presses the connecting ring 32 against the sealing plate 25, which can increase the stability of the arc box 22 in the stator housing 10 and prevent the arc box 22 from loosening and generating vibration noise when the motor is running.

[0039] The working principle is as follows:

[0040] Secure the sealing plate 25 at one end of the arc-shaped box 22, fill the arc-shaped box 22 with glass fiber cotton 24, and secure the sealing plate 25 at the other end. Fix the connecting strip 20 to the inside of the stator housing 10 from the slot 21 with screws. Hold the arc-shaped box 22 and insert the clip 26 into the slot 21, and fix it with screws. Hold the connecting ring 32 and insert the plug rod 31 into the through hole 30. Put the sealing cover 13 on the output shaft 14 and fix it on the stator housing 10. The sealing cover 13 pushes the support ring 34 and the spring column 33, and presses the connecting ring 32 against the sealing plate 25. The sound-absorbing component directly absorbs noise inside the stator housing 10, which can avoid increasing the external volume of the motor. At the same time, the connecting ring 32 connects multiple arc-shaped boxes 22 into a whole, increasing the stability of the arc-shaped box 22.

[0041] All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Since this application is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail in this application.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A low-noise motor, characterized in that, include: An internal rotor motor includes a stator housing (10), a stator coil (11), and a rotor (12). The stator coil (11) is wound on a winding plate inside the stator housing (10), and the rotor (12) is rotatably connected to the middle of the stator housing (10). The sound-absorbing component includes an arc-shaped box (22), micro-holes (23), glass fiber cotton (24), and a sealing plate (25). The arc-shaped box (22) is inserted between two winding plates inside the stator housing (10). The micro-holes (23) are opened on the arc plates on both sides of the arc-shaped box (22). The glass fiber cotton (24) is filled inside the arc-shaped box (22). The sealing plate (25) is fixed at both ends of the arc-shaped box (22).

2. The low-noise motor according to claim 1, characterized in that: The sound-absorbing component also includes a connecting strip (20), a slot (21), and a block (26). The connecting strip (20) is fixed inside the stator housing (10) and located between two winding plates. The slot (21) is opened in the middle of the connecting strip (20). The block (26) is inserted into the slot (21) and fixed with screws. One end of the block (26) is fixed to the middle of the outer side of the arc-shaped box (22).

3. A low-noise motor according to claim 2, characterized in that: The sound-absorbing component also includes a silicone pad (27), which is fixed to the arc-shaped box (22) on the other side away from the card block (26).

4. A low-noise motor according to claim 1, characterized in that: The inner rotor motor also includes a sealing cover (13), which fixes both ends of the stator housing (10) and has a hole in the middle, in which a bearing is fixed.

5. A low-noise motor according to claim 1, characterized in that: The internal rotor motor also includes an output shaft (14), which is fixed in the middle of the rotor (12) and rotatably connected to the middle of a sealing cover (13) on one side.

6. A low-noise motor according to claim 1, characterized in that: It also includes a stabilizing component, which includes a through hole (30), a rod (31) and a connecting ring (32). The through hole (30) is opened in the middle of the upper end plate (25), the rod (31) is inserted into the through hole (30), and the connecting ring (32) is fixed to the upper end of the rod (31).

7. A low-noise motor according to claim 6, characterized in that: The stabilizing component also includes a spring post (33) and a support ring (34). One end of the spring post (33) is fixed to the upper end of the connecting ring (32), and the support ring (34) is fixed to the other end of the spring post (33).

8. A low-noise motor according to claim 7, characterized in that: The support ring (34) is sleeved on the outside of the output shaft (14), and the upper end of the support ring (34) is attached to the inner top surface of the sealing cover (13) above.

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