A low-noise asynchronous motor for clothes dryer

Abstract

The present invention discloses an asynchronous motor for a low-noise clothes dryer, comprising a motor body, a buffer mechanism and an auxiliary lubrication mechanism arranged at one side of the output end of the motor body, a front end cover being installed at one end of the motor body, a transmission bearing being rotatably provided on the front end cover, the transmission bearing being clamped at one side of the output end of the motor body, the buffer mechanism and the auxiliary lubrication mechanism being both installed on the transmission bearing, the buffer mechanism being able to rotate with the transmission bearing, the buffer mechanism being connected to an external drying roller, and the auxiliary lubrication mechanism being arranged between the front end cover and the buffer mechanism; compared with the prior art, the present invention enables the drying roller to continue to rotate under the action of inertia when the motor stops suddenly or the like, at which time the buffer end block on the docking ring can rotate inside the magnetic suction groove, and under the action of the guide block, the buffer end block can be abutted against the wear-resistant layer on the surface of the buffer plate, thereby playing the role of auxiliary speed reduction, and can effectively reduce the wear of the transmission bearing during use.

Description

Technical Field

[0001] The invention relates to the technical field of motors, and in particular to an asynchronous motor for a low-noise clothes dryer. Background Art

[0002] With the improvement of people's quality of life, dryers and all-in-one washers are increasingly entering people's lives. Dryers are cleaning household appliances that use electric heating to instantly evaporate the moisture in washed clothes. There are two main types of motors commonly used in ordinary dryers, one is a DC motor and the other is an asynchronous motor.

[0003] A DC motor is a motor that converts DC power into mechanical energy. It has the advantages of easy starting, braking and speed regulation, but it is relatively expensive, has a relatively short lifespan, and requires high maintenance and replacement costs. An asynchronous motor is an AC motor that converts AC power into mechanical energy through the principle of electromagnetic induction. Asynchronous motors start and run smoothly, have a relatively long lifespan, and have relatively low costs. However, since an eddy current is required during startup and operation, its speed and speed regulation performance are poor, and the asynchronous motor bearings are prone to wear or damage, resulting in low-frequency noise. For this reason, we propose a low-noise asynchronous motor for dryers to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a low-noise asynchronous motor for a clothes dryer to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: an asynchronous motor for a low-noise clothes dryer, comprising a motor body, a buffer mechanism and an auxiliary lubrication mechanism arranged on one side of the output end of the motor body, a front end cover is installed at one end of the motor body, a transmission bearing is rotatably arranged on the front end cover, the transmission bearing is clamped on one side of the output end of the motor body, and the buffer mechanism and the auxiliary lubrication mechanism are both installed on the transmission bearing;

[0006] The buffer mechanism can rotate with the transmission bearing, and the buffer mechanism is connected to the external drying roller, and can play a role of buffer protection in an emergency stop state;

[0007] The auxiliary lubrication mechanism is arranged between the front end cover and the buffer mechanism. The auxiliary lubrication mechanism is used for oiling and lubricating the transmission bearing. When a practical motor is needed, the docking ring can be connected to the external drying drum so that it rotates with the motor, and can drive the external drying drum to make a circular motion, so that the clothes accumulated inside it can be dried quickly. At the same time, the transmission bearing can be oiled and lubricated under the action of the auxiliary lubrication mechanism, thereby reducing the occurrence of abnormal noise during the rotation of the transmission bearing. Since the asynchronous motor will not have a relatively gentle speed reduction curve when the speed changes, it can be compensated with the help of the buffer mechanism to prevent the drying roller from driving the transmission bearing to rotate under the action of inertia, which can reduce the wear of the equipment during use, thereby extending the maintenance cycle and reducing the occurrence of abnormal noise.

[0008] Preferably, the buffer mechanism comprises a rotating disk and a positioning ring, the rotating disk is mounted on one end of the transmission bearing, a sealing sleeve is mounted on one end of the rotating disk, and an elastic pad is provided on one end of the sealing sleeve, which can be adaptively adjusted within a certain length;

[0009] The positioning ring is rotatably arranged at the bottom of the rotating disk, a plurality of positioning shafts are installed at one end of the positioning ring, a plurality of slots are opened on the front end cover, and the positioning shafts are pressed against the inside of the slots to maintain the stability of the rotating disk and reduce the stress on the transmission bearing connected to the external drying roller.

[0010] Preferably, a magnetic groove is provided on the top of the rotating disk, the magnetic groove is annular and has multiple buffer plates clamped inside, one end of the buffer plate is in an inwardly concave arc, and a guide block is installed on the other end of the buffer plate, the guide block is inclined, the buffer plate is arc-shaped and has a wear-resistant layer on the top.

[0011] Preferably, a group of docking rings are provided on the top of the rotating disk, a pair of the docking rings are staggered and unidirectionally rotatably arranged on the top of the rotating disk, arc grooves are provided between the docking rings, and positioning blocks are clamped inside the arc grooves, the positioning blocks are used for connecting and positioning the docking rings, a pair of mounting holes are opened on the surface of the docking rings, and the mounting holes are used for auxiliary positioning with the drying roller;

[0012] An arc groove is provided on the surface of the docking ring, and a buffer end block is movably inserted inside the arc groove. The buffer end block is arc-shaped and the bottom is clamped inside the magnetic suction groove. The length of the buffer end block is smaller than the gap of the buffer plate. The bottom of the buffer end block has magnetism that is attracted to the magnetic suction groove. One end of the buffer end block is arc-shaped and is positioned against one side of the buffer plate, which can push the docking ring to rotate during the transmission process.

[0013] Preferably, the auxiliary lubrication mechanism includes a positioning clamp and a sealing ring, the positioning clamp is rotatably set on the transmission bearing, the outer wall of the positioning clamp is provided with an external thread, the sealing ring is threadedly sleeved on the positioning clamp, a pair of card-connecting plates are inserted on the sealing ring, and the card-connecting plates can be clamped on the front end cover for clamping on the bottom end of the transmission bearing for sealing and lubrication.

[0014] Preferably, a pair of clamping plates are installed on the top of the positioning clamping ring, the clamping plates are arc-shaped and symmetrically arranged, a transmission spring is sleeved on the outer side of the clamping plates, the transmission spring and the clamping plates are concentrically arranged, a plurality of elastic shafts are arranged on the inner wall of the transmission spring, and the elastic shafts are located at the gaps of the clamping plates, and the elastic shafts are against the surface of the transmission bearing, an arc-shaped shaft is installed between the clamping plates, and a transmission tube is sleeved on the arc-shaped shaft, and the transmission tube is located on the top of the transmission spring and is arranged in contact with the transmission spring;

[0015] The transmission tube is a pneumatic tube, and a plurality of compression shafts are installed on the inner wall of the transmission tube. The compression shafts are rectangular and abut against the surface of the transmission bearing. Sponge shafts are inserted between the compression shafts, and the sponge shafts are used to store lubricants.

[0016] Preferably, an annular groove is provided on the top of the sealing ring, and a sealing ring is provided inside the annular groove, the cross-section of the sealing ring is "U"-shaped, a plurality of compression balls are installed at the opening of the sealing ring, the compression balls are against the outer wall of the transmission bearing, and an arc-shaped pad is provided inside the sealing ring, the arc-shaped pad is made of cotton cloth, and the arc-shaped pad absorbs overflowed lubricant by capillary action.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. When the motor of the present invention stops suddenly, the drying drum can continue to rotate under the action of inertia. At this time, the buffer end block on the docking ring can rotate inside the magnetic suction groove. Under the action of the guide block, the buffer end block and the wear-resistant layer on the surface of the buffer plate can be offset, which plays a role of assisting speed reduction and can effectively reduce the wear of the transmission bearing during use;

[0019] 2. The present invention can use a sealing sleeve to be sleeved on the transmission bearing during the use of the equipment to assist in sealing, thereby preventing the surface of the transmission bearing from rusting due to water vapor during use, thereby effectively extending the service life of the equipment;

[0020] 3. During the rotation of the transmission bearing, the present invention can squeeze the elastic shaft on the transmission spring, squeeze the transmission spring and the transmission tube, and the change of air pressure inside the transmission tube can drive the compression shaft to slightly compress and twist the sponge shaft, so that the internal lubricant can be slowly dripped onto the surface of the transmission bearing, and can be lubricated during use, thereby ensuring smooth operation of the equipment and reducing abnormal noise inside the motor;

[0021] 4. When the excess lubricant of the present invention is discharged along one side of the sealing ring, it can be absorbed by the capillary action of the arc pad, and the squeezing ball can be against the surface of the transmission bearing, reducing the dust accumulation outside the bearing, causing the lubricant to adhere to it and cause oil stains to adhere. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the split structure of the motor body of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of the auxiliary lubrication mechanism of the present invention;

[0025] Figure 4 It is a schematic diagram of the local structure of the adsorption ring of the present invention;

[0026] Figure 5 For the present invention Figure 3 A partial enlarged schematic diagram in the middle;

[0027] Figure 6 This is a schematic diagram of the bottom structure of the rotating disk of the present invention;

[0028] Figure 7 It is a schematic diagram of the structure of the buffer mechanism of the present invention;

[0029] Figure 8 For the present invention Figure 7 A partial enlarged schematic diagram of point B in the middle;

[0030] In the figure: 1. motor body; 2. front end cover; 3. buffer mechanism; 4. auxiliary lubrication mechanism; 21. transmission bearing; 31. rotating disk; 32. positioning ring; 321. positioning shaft; 33. docking ring; 34. sealing sleeve; 35. buffer end block; 36. positioning plug block; 37. magnetic suction groove; 371. buffer plate; 372. guide block; 41. positioning snap ring; 42. snap plate; 43. transmission pipe; 431. compression shaft; 44. transmission spring; 45. sealing ring; 46. sealing retaining ring; 461. compression ball; 47. arc pad; 48. sponge shaft. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1-Figure 8 The present invention provides a technical solution: an asynchronous motor for a low-noise clothes dryer, comprising a motor body 1, a buffer mechanism 3 and an auxiliary lubrication mechanism 4 arranged at one side of the output end of the motor body 1, a front end cover 2 is installed at one end of the motor body 1, a transmission bearing 21 is rotatably arranged on the front end cover 2, the transmission bearing 21 is clamped at one side of the output end of the motor body 1, and the buffer mechanism 3 and the auxiliary lubrication mechanism 4 are both installed on the transmission bearing 21;

[0033] The buffer mechanism 3 can rotate with the transmission bearing 21, and the buffer mechanism 3 is connected to the external drying roller, and can play a role of buffer protection in an emergency stop state;

[0034] The auxiliary lubrication mechanism 4 is arranged between the front end cover 2 and the buffer mechanism 3. The auxiliary lubrication mechanism 4 is used for lubricating the transmission bearing 21. When a practical motor is needed, the docking ring 33 can be connected to the external drying drum so that it rotates with the motor, and can drive the external drying drum to make a circular motion, so that the clothes accumulated inside it can be dried quickly. At the same time, under the action of the auxiliary lubrication mechanism 4, the transmission bearing 21 can be lubricated, and the abnormal noise during the rotation of the transmission bearing 21 can be reduced. Since the asynchronous motor will not have a relatively gentle deceleration curve when the speed changes, it can be compensated with the help of the buffer mechanism 3 to prevent the drying roller from driving the transmission bearing 21 to rotate under the action of inertia, which can reduce the wear of the equipment during use, thereby extending the maintenance cycle and reducing the occurrence of abnormal noise.

[0035] like Figure 6 As shown, since most clothes dryers are vertical, the drying roller is installed on the transmission bearing 21, which bears more stress than the horizontal type. The buffer mechanism 3 includes a rotating disk 31 and a positioning ring 32. The rotating disk 31 is installed at one end of the transmission bearing 21. A sealing sleeve 34 is installed at one end of the rotating disk 31. An elastic pad is provided at one end of the sealing sleeve 34, which can be adaptively adjusted within a certain length.

[0036] The positioning ring 32 is rotatably arranged at the bottom of the rotating disk 31. A plurality of positioning shafts 321 are installed at one end of the positioning ring 32. A plurality of slots are opened on the front end cover 2. The positioning shafts 321 are pressed against the inside of the slots to maintain the stability of the rotating disk 31 and reduce the stress on the transmission bearing 21 connected to the external drying roller. The positioning ring 32 and the positioning shafts 321 can play an auxiliary supporting role to offset part of the stress, thereby effectively extending the service life of the equipment.

[0037] like Figure 8 As shown, since the asynchronous motor does not have a good deceleration curve during the start-stop process, the transmission bearing 21 is prone to follow the rotation of the drying roller under the action of inertia, which is likely to increase the wear of the transmission bearing 21 during use. A magnetic suction groove 37 is provided on the top of the rotating disk 31. The magnetic suction groove 37 is annular and has multiple buffer plates 371 clamped inside. One end of the buffer plate 371 is in an inwardly concave arc shape, and a guide block 372 is installed on the other end of the buffer plate 371. The guide block 372 is inclined. The buffer plate 371 is arc-shaped and has a wear-resistant layer on the top. The buffer plate 371 and the buffer end block 35 can cooperate to play a deceleration role, which can prevent the transmission bearing 21 from rotating under the action of inertia after the motor stops rotating, and play an auxiliary protection role.

[0038] like Figure 7 As shown, the drying roller can be provided with a group of docking rings 33 on the top of the rotating disk 31 outside the docking ring 33, a pair of docking rings 33 are staggered and unidirectionally rotatably arranged on the top of the rotating disk 31, arc grooves are provided between the docking rings 33, and positioning blocks 36 are clamped inside the arc grooves, and the positioning blocks 36 are used for connecting and positioning the docking rings 33, and a pair of mounting holes are opened on the surface of the docking rings 33, and the mounting holes are used for auxiliary positioning with the drying roller;

[0039] An arc groove is provided on the surface of the docking ring 33, and a buffer end block 35 is movably inserted inside the arc groove. The buffer end block 35 is arc-shaped and the bottom is clamped in the magnetic suction groove 37. The length of the buffer end block 35 is smaller than the gap of the buffer plate 371. The bottom of the buffer end block 35 has magnetism attracted to the magnetic suction groove 37. One end of the buffer end block 35 is arc-shaped and is positioned against one side of the buffer plate 371. During the transmission process, the docking ring 33 can be pushed to rotate. When the motor stops suddenly, the drying drum can continue to rotate under the action of inertia. At this time, the buffer end block 35 on the docking ring 33 can rotate inside the magnetic suction groove 37, and under the action of the guide block 372, the buffer end block 35 can be against the wear-resistant layer on the surface of the buffer plate 371, which plays a role in assisting speed reduction and can effectively avoid excessive wear of the transmission bearing 21 during use.

[0040] like Figure 3As shown, in order to ensure that the transmission bearing 21 runs smoothly during operation, the auxiliary lubrication mechanism 4 includes a positioning snap ring 41 and a sealing ring 45. The positioning snap ring 41 is rotatably set on the transmission bearing 21. The outer wall of the positioning snap ring 41 is provided with an external thread. The sealing ring 45 is threadedly sleeved on the positioning snap ring 41. A pair of card-connecting plates are inserted on the sealing ring 45, and the card-connecting plates can be carded on the front end cover 2, and are used to be carded on the bottom end of the transmission bearing 21 for sealing and lubrication. The card-connecting plates can play a limiting role, so that the transmission bearing 21 can rotate inside the positioning snap ring 41 for oiling and lubricating it.

[0041] like Figure 5 As shown, in order to control the amount of oil applied during the transmission process, a pair of clamping plates 42 are installed on the top of the positioning clamping ring 41. The clamping plates 42 are arc-shaped and symmetrically arranged. A transmission spring 44 is sleeved on the outer side of the clamping plates 42. The transmission spring 44 and the clamping plates 42 are concentrically arranged. A plurality of elastic shafts are arranged on the inner wall of the transmission spring 44, and the elastic shafts are located at the gaps of the clamping plates 42, and the elastic shafts are against the surface of the transmission bearing 21. An arc-shaped shaft is installed between the clamping plates 42, and a transmission tube 43 is sleeved on the arc-shaped shaft. The transmission tube 43 is located on the top of the transmission spring 44 and is arranged in contact with the transmission spring 44.

[0042] The transmission tube 43 is a pneumatic tube, and a plurality of compression shafts 431 are installed on the inner wall of the transmission tube 43. The compression shafts 431 are rectangular and are against the surface of the transmission bearing 21. Sponge shafts 48 are inserted between the compression shafts 431. The sponge shafts 48 are used to store lubricants. During the transmission process, the sponge shafts 48 can be squeezed between the transmission bearing 21 and the elastic shaft, which can drive the air pressure inside the transmission tube 43 to change, so that the compression shaft 431 squeezes and twists the sponge shaft 48 slightly, so that the lubricant can be evenly applied to the surface of the transmission bearing 21, which is used to assist lubrication and reduce the wear between it and the motor connection end.

[0043] Preferably, an annular groove is provided on the top of the sealing ring 45, and a sealing retaining ring 46 is provided inside the annular groove. The cross-section of the sealing retaining ring 46 is "U"-shaped. A plurality of compression balls 461 are installed at the opening of the sealing retaining ring 46. The compression balls 461 are pressed against the outer wall of the transmission bearing 21. An arc-shaped pad 47 is provided inside the sealing retaining ring 46. The arc-shaped pad 47 is made of cotton cloth. The arc-shaped pad 47 absorbs overflowing lubricant by capillary action. When excess lubricant is discharged along one side of the sealing ring 45, it can be absorbed by the capillary action of the arc-shaped pad 47. The squeezing balls can press against the surface of the transmission bearing 21 to prevent it from mixing with dust, etc., thereby reducing the adhesion of oil and dirt and reducing the difficulty of subsequent maintenance and cleaning.

[0044] Working principle: First, when a practical motor is needed, the docking ring 33 can be connected to the external drying drum so that it rotates with the motor, and can drive the external drying drum to make a circular motion, so that the clothes accumulated inside it can be dried quickly. At the same time, the transmission bearing 21 can be lubricated under the action of the auxiliary lubrication mechanism 4 to reduce the abnormal noise during the rotation of the transmission bearing 21. Since the asynchronous motor will not have a relatively gentle deceleration curve when the speed changes, it can be compensated with the help of the buffer mechanism 3 to prevent the drying roller from driving the transmission bearing 21 to rotate under the action of inertia, which can reduce the wear of the equipment during use, thereby extending the maintenance cycle and reducing the occurrence of abnormal noise. In the use of the equipment, the sealing sleeve 34 can be sleeved on the transmission bearing 21 for auxiliary sealing to prevent the water vapor during use from causing rust on the surface of the transmission bearing 21, which can effectively extend the service life of the equipment.

[0045] Then, when the motor stops suddenly, the drying drum can continue to rotate under the action of inertia, and the buffer end block 35 on the docking ring 33 can rotate inside the magnetic suction groove 37, and the buffer end block 35 can be abutted against the wear-resistant layer on the surface of the buffer plate 371 under the action of the guide block 372, which plays a role in assisting the deceleration. After the deceleration is completed, it can be clamped inside the magnetic suction groove 37 under the action of magnetism, and can be clamped between the buffer plates 371 again, which can effectively reduce the wear of the transmission bearing 21 during use;

[0046] Finally, during the rotation of the transmission bearing 21, it can be squeezed against the elastic shaft on the transmission spring 44, and the transmission spring 44 can be squeezed against the transmission tube 43. The change in air pressure inside the transmission tube 43 can drive the compression shaft 431 to slightly compress and twist the sponge shaft 48, and the internal lubricant can slowly drip onto the surface of the transmission bearing 21. It can be oiled and lubricated during use, which can reduce abnormal noise inside the motor while ensuring smooth operation of the equipment. When excess lubricant is discharged along one side of the sealing ring 45, it can be absorbed by the capillary action of the arc pad 47, and the squeezing ball can be against the surface of the transmission bearing 21, reducing the accumulation of dust on the outside of the bearing, causing the lubricant to adhere to it and cause oil stains to adhere.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low-noise asynchronous motor for a clothes dryer, comprising a motor body (1), a buffer mechanism (3) and an auxiliary lubrication mechanism (4) arranged on one side of an output end of the motor body (1), characterized in that: A front end cover (2) is mounted on one end of the motor body (1), a transmission bearing (21) is rotatably mounted on the front end cover (2), the transmission bearing (21) is clamped on one side of the output end of the motor body (1), and the buffer mechanism (3) and the auxiliary lubrication mechanism (4) are both mounted on the transmission bearing (21); The buffer mechanism (3) can rotate along with the transmission bearing (21), and the buffer mechanism (3) is connected to the external drying roller, and can play a role of buffer protection in an emergency stop state; The auxiliary lubrication mechanism (4) is arranged between the front end cover (2) and the buffer mechanism (3), and the auxiliary lubrication mechanism (4) is used for oil lubrication of the transmission bearing (21); The buffer mechanism (3) comprises a rotating disk (31) and a positioning ring (32); the rotating disk (31) is mounted on one end of the transmission bearing (21); a sealing sleeve (34) is mounted on one end of the rotating disk (31); an elastic pad is provided at one end of the sealing sleeve (34) and can be adaptively adjusted within a certain length; The positioning ring (32) is rotatably disposed at the bottom of the rotating disk (31), and a plurality of positioning shafts (321) are mounted on one end of the positioning ring (32). A plurality of slots are formed on the front end cover (2), and the positioning shafts (321) are pressed against the inside of the slots to maintain the stability of the rotating disk (31) and reduce the stress on the transmission bearing (21) connected to the external drying roller; A magnetic attraction groove (37) is provided on the top of the rotating disk (31); the magnetic attraction groove (37) is annular and has a plurality of buffer plates (371) disposed therein; one end of the buffer plate (371) is in an inwardly concave arc shape; a guide block (372) is installed on the other end of the buffer plate (371); the guide block (372) is arranged in an inclined manner; the buffer plate (371) is in an arc shape and has a wear-resistant layer disposed on the top; A group of docking rings (33) are provided on the top of the rotating disk (31), and a pair of the docking rings (33) are arranged in a staggered manner and are unidirectionally rotatable on the top of the rotating disk (31). An arc groove is provided between the docking rings (33), and a positioning plug (36) is clamped inside the arc groove. The positioning plug (36) is used for connecting and positioning the docking rings (33). A pair of mounting holes are opened on the surface of the docking ring (33), and the mounting holes are used for auxiliary positioning with the drying roller. An arc groove is provided on the surface of the docking ring (33), and a buffer end block (35) is movably inserted in the arc groove. The buffer end block (35) is arc-shaped and its bottom is clamped in the magnetic suction groove (37). The length of the buffer end block (35) is smaller than the gap of the buffer plate (371). The bottom of the buffer end block (35) has magnetism that attracts the magnetic suction groove (37). One end of the buffer end block (35) is arc-shaped and is located against one side of the buffer plate (371), so that the docking ring (33) can be pushed to rotate during the transmission process.

2. The low-noise asynchronous motor for a clothes dryer according to claim 1, characterized in that: The auxiliary lubrication mechanism (4) comprises a positioning snap ring (41) and a sealing ring (45); the positioning snap ring (41) is rotatably mounted on the transmission bearing (21); an outer thread is provided on an outer wall of the positioning snap ring (41); the sealing ring (45) is threadedly sleeved on the positioning snap ring (41); a pair of card-connecting plates are inserted into the sealing ring (45); and the card-connecting plates can be card-connected on the front end cover (2) and are used to be card-connected on the bottom end of the transmission bearing (21) for sealing and lubricating.

3. The low-noise asynchronous motor for a clothes dryer according to claim 2, characterized in that: A pair of clamping plates (42) are mounted on the top of the positioning clamping ring (41), the clamping plates (42) are arc-shaped and symmetrically arranged, a transmission spring (44) is sleeved on the outer side of the clamping plate (42), the transmission spring (44) and the clamping plate (42) are concentrically arranged, a plurality of elastic shafts are arranged on the inner wall of the transmission spring (44), the elastic shafts are located at the gaps of the clamping plates (42), and the elastic shafts are against the surface of the transmission bearing (21), an arc-shaped shaft is mounted between the clamping plates (42), and a transmission tube (43) is sleeved on the arc-shaped shaft, the transmission tube (43) is located on the top of the transmission spring (44) and is arranged in contact with the transmission spring (44); The transmission tube (43) is a pneumatic tube. A plurality of compression shafts (431) are mounted on the inner wall of the transmission tube (43). The compression shafts (431) are rectangular and abut against the surface of the transmission bearing (21). Sponge shafts (48) are inserted between the compression shafts (431). The sponge shafts (48) are used to store lubricant.

4. The low-noise asynchronous motor for a clothes dryer according to claim 2, characterized in that: An annular groove is provided at the top of the sealing ring (45), and a sealing retaining ring (46) is provided inside the annular groove. The sealing retaining ring (46) has a U-shaped cross section. A plurality of compression balls (461) are installed at the opening of the sealing retaining ring (46). The compression balls (461) are pressed against the outer wall of the transmission bearing (21). An arc-shaped pad (47) is provided inside the sealing retaining ring (46). The arc-shaped pad (47) is made of cotton cloth. The arc-shaped pad (47) absorbs overflowing lubricant by means of capillary action.

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