Washing machine motor with built-in bearing lubrication

Abstract

The present invention discloses a washing machine motor with built-in bearing lubrication, comprising a motor, an end cover and a rotating shaft extending from the end cover, an inner limiting layer integrally formed on the inner side of the end cover, a bearing body installed in the inner limiting layer, and an inner and outer circulation part installed at the inner end of the end cover. The present invention fills lubricating oil into each part of the circulation channel, rotates the rotating shaft, realizes the rotation of the impeller, and realizes the circulation of the lubricating oil. Even if the viscosity of the lubricating oil becomes less, the height difference of the infusion port causes the lubricating oil level to drop, and maintenance can be performed for a long time, reducing the number of times. The lubricating oil can reduce friction and wear, and extend the service life of the bearing body and the motor. The circulating lubricating oil can take away the heat on the surface of the bearing body, reduce the bearing temperature, and realize the cleaning of the bearing body. In addition, it can play a certain sealing role to prevent external impurities and moisture from entering the inside of the bearing body.

Description

Technical Field

[0001] The invention relates to the technical field of motors, and in particular to a washing machine motor with built-in bearing lubrication. Background Art

[0002] The washing machine motor plays a vital role in the washing machine. It is the power source of the washing machine and is responsible for driving the inner drum (or impeller) of the washing machine to rotate to complete the washing process such as washing, rinsing, and dehydration. Different types of washing machines have different working principles, but no matter which type, there is a key component inside that needs to rotate to drive the clothes to interact with the water flow to achieve the cleaning effect. The washing machine motor is the power source that drives this component to rotate.

[0003] During the use of the washing machine, especially during the washing and dehydration stages, the internal environment will be relatively humid. If the washing machine is in a humid state for a long time, or is often used in an unventilated and humid environment, the motor will be easily corroded by water, resulting in rust. In addition, the difference in water quality in different regions will also affect the rust of the motor. If the water contains more minerals or impurities, these substances may accelerate the rust process after being deposited on the surface of the motor.

[0004] The motor bearing is an important part of the motor. During the use of the above motor, the bearing can significantly reduce the friction coefficient between the motor output shaft and the drum. This helps to reduce energy loss and improve the operating efficiency of the motor. However, after the bearing is corroded, the bearing surface becomes rough, which causes greater friction and vibration during rotation, and then causes irregular noises such as "squeaking" or "clucking", aggravating the wear of the bearing, shortening its service life, and causing the motor to require more power to drive the drum to rotate. Based on this, the motor bearings need to be maintained frequently, or a large amount of lubricating oil needs to be added to the bearings to isolate moisture. However, the built-in motor bearings require partial disassembly of the motor for maintenance or adding lubricating oil. Even if lubricating oil is added, it cannot ensure that the bearings are fully covered, and rust is prone to occur in some parts. Summary of the invention

[0005] The object of the present invention is to provide a washing machine motor with built-in bearing lubrication to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a washing machine motor with built-in bearing lubrication, comprising a motor, the motor comprising an end cover and a rotating shaft extending from the end cover, an inner limiting layer integrally formed on the inner side of the end cover, a bearing body installed in the inner limiting layer, an inner and outer circulation part installed at the inner end of the end cover, the rotating shaft passes through the bearing body and the inner and outer circulation part, the inner and outer circulation part has an impeller fixedly sleeved with the rotating shaft, the rotation of the rotating shaft is used to drive the impeller to rotate, and the lubricating oil circulates from the inner and outer circulation part, the inner limiting layer and the bearing body.

[0007] Furthermore, the inner limiting layer extends outward from the inner end to form an external connection hole, the end surface of the end cover is provided with a through hole for the shaft to pass through, the inside of the end cover is laterally provided with an internal connection hole, and the two ends of the internal connection hole are respectively connected to the external connection hole and the through hole to form a channel for lubricating oil circulation;

[0008] The rotating shaft extends inward from the outer end to form an infusion port, and the outer wall of the rotating shaft is provided with an outer circulation port and an inner circulation port arranged up and down, respectively. The outer circulation port and the inner circulation port are both connected with the infusion port, the outer circulation port is connected with the inner connecting hole, and the inner circulation port is connected with the inner and outer circulation parts, so as to drive the circulation of the lubricating oil.

[0009] Furthermore, the outer end of the external connection hole is connected to the outside world, and a bolt is fastened at the position where the hole communicates with the outside world.

[0010] Furthermore, an annular cavity communicating with the inner connecting hole is formed on the inner wall of the through hole, and at least two sealing rings are fixed on the inner wall of the through hole. The sealing rings are respectively located on both sides of the annular cavity for being squeezed with the outer wall of the rotating shaft.

[0011] Furthermore, the internal and external circulation part also has a closed cover fixed to the inner end of the inner limiting layer, a power chamber is integrally provided on the outer side of the closed cover, the impeller is installed in the power chamber, and the closed cover is penetrated by connection port 1, connection port 2 and connection port 3, the connection port 1, connection port 2 and connection port 3 are sequentially distributed from the outside to the inside, the inner ends of the connection port 2 and the connection port 3 are both connected to the inside of the inner limiting layer, the outer ends of the connection port 2 and the connection port 3 are respectively connected to the outer side and the inner side of the power chamber, a circulation pipe is fixed between the connection port 1 and the connection port 2, and the connection port 1 is connected to the external connection hole;

[0012] When the impeller rotates, the lubricating oil in the power chamber moves from the third connection port, the second connection port and the first connection port in sequence.

[0013] Furthermore, both end surfaces of the bearing body are respectively fitted with the end cover and the closing cover.

[0014] Furthermore, the rotating shaft passes through the closing cover and the power cavity, and the closing cover and the power cavity are in contact with the outer wall of the rotating shaft.

[0015] Furthermore, an extension port is opened on the inner side of the impeller, and the extension port is connected to the inner circulation port. An inner extension layer is extended inward on the inner wall of one side of the power chamber, and the inner extension layer is made of rubber. One end of the impeller is extruded with the inner extension layer, and the other end is extruded with the outer end of the closing cover.

[0016] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0017] 1. The lubricating oil is filled into every part of the circulation channel, the shaft rotates, the impeller rotates, and the circulation of the lubricating oil is realized. Even if the viscosity of the lubricating oil becomes less, the height difference of the filling port causes the lubricating oil level to drop, so that maintenance can be performed for a long time and the number of times can be reduced. The lubricating oil can reduce friction and wear, and extend the service life of the bearing body and the motor. The circulating lubricating oil can take away the heat on the surface of the bearing body, reduce the bearing temperature, and clean the bearing body. In addition, it can play a certain sealing role to prevent external impurities and moisture from entering the inside of the bearing body.

[0018] 2. When the lubricating oil circulates, especially in the outer connection hole and the inner connection hole, it contacts with the end cover to transfer heat to the greatest extent and avoid excessive temperature of the bearing body.

[0019] 3. After long-term use, the lubricating oil needs to be replaced. The bolts at the outer end of the external connection hole are opened, and the lubricating oil is poured from the filling port. The impeller works and the internal lubricating oil is replaced. The driving force generated by the rotation of the impeller is relatively large, which can make the impurities in the lubricating oil move outward with the lubricating oil and replace the residual lubricating oil. There is no need to disassemble the motor and the internal bearing body can be maintained.

[0020] 4. The channels and some gaps in the lubricating oil circulation are relatively less squeezed by the lubricating oil, which prevents the lubricating oil from seeping out of the gaps. In addition, the lubricating oil becomes relatively viscous after a long time, making it more difficult to seep out of the gaps. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying 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 a half-section structure of the end cover of the present invention;

[0024] Figure 3It is a schematic diagram of the structure of the end cover and the inner and outer circulation parts separated from each other in the present invention;

[0025] Figure 4 The present invention Figure 3 A is a schematic diagram of the partially enlarged structure of the middle part;

[0026] Figure 5 It is a schematic diagram of the half-section structure of the bearing body and the inner and outer circulation parts of the present invention;

[0027] Figure 6 This is a schematic diagram of a half-section structure of the rotating shaft of the present invention;

[0028] Figure 7 It is a schematic diagram of the structure of the internal and external circulation parts of the present invention;

[0029] Figure 8 It is a schematic diagram of the lubricating oil circulation structure of the present invention.

[0030] In the figure: 1. end cover; 11. through hole; 2. rotating shaft; 21. infusion port; 22. external circulation port; 23. internal circulation port; 3. internal limiting layer; 31. external connecting hole; 32. internal connecting hole; 33. annular cavity; 34. sealing ring; 4. bearing body; 5. internal and external circulation parts; 51. closing cover; 52. power cavity; 521. internal extension layer; 53. impeller; 531. extension port; 54. circulation pipe; 55. connection port one; 56. connection port two; 57. connection port three. 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 8The present invention provides a technical solution: the bearing body 4 is extremely important in the motor, especially in the motor located in a humid environment. In the home environment, the most common motor located in a humid environment is the motor of the washing machine, which needs to drive the washing machine to work. However, after the bearing body 4 is rusted, the increased friction will directly affect the operation efficiency of the equipment, increase energy loss, and reduce work efficiency. The rusted bearing body 4 may generate greater noise and vibration during operation. This not only affects the comfort of the equipment, but also may interfere with the surrounding environment. Therefore, it is extremely important to maintain the motor in a humid environment. A washing machine motor with built-in bearing lubrication is proposed, including a motor, the motor including an end cover 1 and a rotating shaft 2 extending from the end cover 1, an inner limiting layer 3 is integrally formed on the inner side of the end cover 1, a bearing body 4 is installed in the inner limiting layer 3, an inner and outer circulation part 5 is installed at the inner end of the end cover 1, the rotating shaft 2 passes through the bearing body 4 and the inner and outer circulation part 5, the inner and outer circulation part 5 has an impeller 53 fixedly sleeved with the rotating shaft 2, the rotating shaft 2 rotates to drive the impeller 53 to rotate, and the lubricating oil circulates from the inner and outer circulation part 5, the inner limiting layer 3 and the bearing body 4, and the lubricating oil is used to lubricate the bearing body 4, thereby reducing wear and energy consumption. During the operation of the bearing body 4, a certain amount of heat will be generated due to the effect of friction and load. When the lubricating oil flows through the bearing body 4, it can take away part of the heat and play a role in cooling the bearing body 4. This is very important to prevent the bearing body 4 from overheating and maintain its normal operating temperature range. During the long-term operation of the bearing body 4, some tiny particles and impurities will be generated. If these impurities accumulate inside the bearing body 4, they may damage the oil film and increase wear. When the lubricating oil flows through the bearing body 4, it can carry and take away these impurities, play a role in cleaning the bearing body 4, and keep its interior clean and lubricated.

[0033] In addition, the lubricating oil isolates the bearing body 4 from corrosion factors such as water vapor, thereby preventing the bearing body 4 from rusting and corroding. This is of great significance for extending the service life of the bearing body 4 and maintaining its good working condition.

[0034] In order to enable the lubricating oil to circulate, and to achieve circulation without disassembling the built-in bearing body 4, the inner limiting layer 3 extends outward from the inner end to be provided with an outer connecting hole 31, and a through hole 11 for the shaft 2 to pass through is provided on the end surface of the end cover 1, and an inner connecting hole 32 is transversely provided inside the end cover 1, and the two ends of the inner connecting hole 32 are respectively connected to the outer connecting hole 31 and the through hole 11 to form a channel for the circulation of the lubricating oil. Under the action of the outer connecting hole 31 and the inner connecting hole 32, the lubricating oil can circulate, and the lubricating oil is fully in contact with the end cover 1 to achieve heat transfer, and heat dissipation is easier to achieve heat dissipation during the operation of the motor, and the lubricating oil is also stationary during the operation;

[0035] When the lubricating oil is replaced, the lubricating oil needs to be infused. The rotating shaft 2 is extended from the outer end to the inside to form an infusion port 21. The outer wall of the rotating shaft 2 is respectively provided with an outer circulation port 22 and an inner circulation port 23 arranged up and down. The outer circulation port 22 and the inner circulation port 23 are both connected with the infusion port 21. The outer circulation port 22 is connected with the inner connecting hole 32. The inner circulation port 23 is connected with the inner and outer circulation parts 5 to drive the circulation of the lubricating oil. The main function of the infusion port 21 is to add the lubricating oil. The position of the infusion port 21 is at the highest. Under the effect of the height difference, the circulation position can be filled with the lubricating oil. During the circulation of the lubricating oil, it is ensured that the impeller 53 can drive the lubricating oil to move.

[0036] The lubricating oil needs to be replaced after a long time. The outer end of the external connection hole 31 is connected to the outside world, and a bolt is fastened at the position connected to the outside world. When the external connection hole 31 is opened, the circulating lubricating oil moves outward under the action of the impeller 53, and new lubricating oil is subsequently added to realize the replacement of the lubricating oil. During the replacement, there is no need to disassemble or move the motor.

[0037] An annular cavity 33 connected to the inner connecting hole 32 is provided on the inner wall of the through hole 11. During the rotation of the rotating shaft 2, it is difficult for the lubricating oil to enter from the external circulation port 22. However, under the action of the annular cavity 33, the lubricating oil moves into the annular cavity 33, and under the circulation pressure, the lubricating oil enters from the external circulation port 22. At least two sealing rings 34 are fixed on the inner wall of the through hole 11. The sealing rings 34 are respectively located on both sides of the annular cavity 33 and are used for squeezing with the outer wall of the rotating shaft 2. The main function is to prevent the lubricating oil from leaking out.

[0038] The internal and external circulation part 5 needs to realize the circulation function. The internal and external circulation part 5 also has a closed cover 51 fixed on the inner end of the inner limiting layer 3. A power chamber 52 is integrally provided on the outer side of the closed cover 51. The impeller 53 is installed in the power chamber 52. A connection port 1 55, a connection port 2 56 and a connection port 3 57 are penetrated on the closed cover 51. The connection port 1 55, the connection port 2 56 and the connection port 3 57 are distributed from the outside to the inside in sequence. The inner ends of the connection port 2 56 and the connection port 3 57 are both connected to the inside of the inner limiting layer 3. The outer ends of the connection port 2 56 and the connection port 3 57 are respectively connected to the outer side and the inner side of the power chamber 52. A circulation pipe 54 is fixed between the connection port 1 55 and the connection port 2 56. The connection port 1 55 is connected to the outer connecting hole 31 to form a circulation channel. The circulation of the lubricating oil is realized under the action of the impeller 53.

[0039] When the impeller 53 rotates, the lubricating oil in the power chamber 52 moves from the third connection port 57, the second connection port 56 and the first connection port 55 in sequence, so that the lubricating oil is driven to move.

[0040] The two end surfaces of the bearing body 4 are respectively fitted with the end cover 1 and the closing cover 51. The lubricating oil in the bearing body 4 is located between the inner ring and the outer ring of the bearing body 4. When the lubricating oil circulates, the lubricating oil between the inner ring and the outer ring is circulated, so that the lubricating oil can fully flow into the driving part of the bearing body 4.

[0041] The rotating shaft 2 passes through the closing cover 51 and the power chamber 52 , and the closing cover 51 and the power chamber 52 are in close contact with the outer wall of the rotating shaft 2 to reduce the leakage of lubricating oil as much as possible.

[0042] An extension port 531 is provided on the inner side of the impeller 53, and the extension port 531 is connected to the inner circulation port 23. An inner extension layer 521 is extended inwardly from the inner wall of one side of the power chamber 52. The inner extension layer 521 is made of rubber. One end of the impeller 53 is pressed against the inner extension layer 521, and the other end is pressed against the outer end of the closing cover 51. During the rotation of the impeller 53, the lubricating oil is prevented from leaking out from the gap of the rotating shaft 2 as much as possible.

[0043] The working principle of the present invention is as follows: lubricating oil is injected into the injection port 21 of the rotating shaft 2 until the lubricating oil is full to the port of the injection port 21. Due to the height difference, the lubricating oil will be filled into every part of the circulation channel. The end of the injection port 21 is fixed by bolts to prevent the lubricating oil from moving outward. Then, when the motor is working, the rotating shaft 2 rotates to realize the rotation of the impeller 53. The connection port 3 57, the connection port 2 56, the circulation pipe 54, the connection port 1 55, the outer connection hole 31, the inner connection hole 32, the annular cavity 33, the outer circulation port 22, the injection port 21 and the inner The circulation port 23 forms a channel for the circulation of the lubricating oil, thereby realizing the circulation of the lubricating oil. In addition, even if the viscosity of the lubricating oil becomes less and the height difference of the infusion port 21 causes the lubricating oil level to drop, the lubricating oil can still be kept circulating, and maintenance is not required for a long time, reducing the number of times. The lubricating oil can reduce friction and wear, and extend the service life of the bearing body 4 and the motor. The circulating lubricating oil can take away the heat from the surface of the bearing body 4, reduce the bearing temperature, and clean the bearing body 4. In addition, it can play a certain sealing role to prevent external impurities and moisture from entering the interior of the bearing body 4.

[0044] When the lubricating oil circulates through the connection port three 57, the connection port two 56, the circulation pipe 54, the connection port one 55, the outer connection hole 31, the inner connection hole 32, the annular cavity 33, the outer circulation port 22, the infusion port 21 and the inner circulation port 23, especially in the outer connection hole 31 and the inner connection hole 32, it comes into contact with the end cover 1, thereby maximizing the heat transfer effect and avoiding excessive temperature of the bearing body 4.

[0045] After long-term use, the viscous lubricating oil needs to be replaced. The bolt at the outer end of the external connecting hole 31 is opened, and the lubricating oil is injected from the injection port 21, and the rotating shaft 2 is driven to rotate. Under the action of the impeller 53, the lubricating oil located in the bearing body 4 and the internal and external circulation parts 5 moves outward from the external connecting hole 31 to replace the internal lubricating oil. In addition, since the driving force generated by the rotation of the impeller 53 is relatively large, the impurities in the lubricating oil can be moved outward with the lubricating oil, and the residual lubricating oil is replaced cleanly. There is no need to disassemble the motor, and the internal bearing body 4 can be maintained.

[0046] When the impeller 53 is working, the lubricating oil is circulated, and the channels and some gaps in the lubricating oil circulation are relatively less squeezed by the lubricating oil, which can prevent the lubricating oil from seeping out from the gaps. In addition, the lubricating oil becomes relatively viscous after a long time, and it is more difficult to seep out from the gaps.

[0047] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0048] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A washing machine motor with built-in bearing lubrication, comprising a motor, the motor comprising an end cover (1) and a rotating shaft (2) extending from the end cover (1), Features: An inner limiting layer (3) is integrally formed on the inner side of the end cover (1), a bearing body (4) is installed in the inner limiting layer (3), an inner and outer circulation part (5) is installed at the inner end of the end cover (1), the rotating shaft (2) passes through the bearing body (4) and the inner and outer circulation part (5), the inner and outer circulation part (5) has an impeller (53) fixedly sleeved with the rotating shaft (2), and the rotating shaft (2) is rotated to drive the impeller (53) to rotate, and lubricating oil is circulated through the inner and outer circulation part (5), the inner limiting layer (3) and the bearing body (4); The inner limiting layer (3) extends outward from the inner end and is provided with an external connection hole (31); the end surface of the end cover (1) is provided with a through hole (11) for the shaft (2) to pass through; the interior of the end cover (1) is provided with an inner connection hole (32) in a transverse direction; the two ends of the inner connection hole (32) are respectively connected to the external connection hole (31) and the through hole (11) to form a channel for lubricating oil circulation; The rotating shaft (2) is provided with an injection port (21) extending inward from the outer end thereof, and an outer circulation port (22) and an inner circulation port (23) are respectively provided on the outer wall of the rotating shaft (2) and are arranged in an upper and lower manner. The outer circulation port (22) and the inner circulation port (23) are both communicated with the injection port (21), the outer circulation port (22) is communicated with the inner connecting hole (32), and the inner circulation port (23) is communicated with the inner and outer circulation parts (5), so as to drive the circulation of lubricating oil; The internal and external circulation part (5) further comprises a closing cover (51) fixed to the inner end of the inner limiting layer (3); a power chamber (52) is integrally provided on the outer side of the closing cover (51); the impeller (53) is installed in the power chamber (52); a connection port 1 (55), a connection port 2 (56) and a connection port 3 (57) are provided through the closing cover (51); the connection port 1 (55), the connection port 2 (56) and the connection port 3 (57) are sequentially arranged from the outside to the inside; the inner ends of the connection port 2 (56) and the connection port 3 (57) are both in communication with the inside of the inner limiting layer (3); the outer ends of the connection port 2 (56) and the connection port 3 (57) are respectively in communication with the outer side and the inner side of the power chamber (52); a circulation pipe (54) is fixed between the connection port 1 (55) and the connection port 2 (56); the connection port 1 (55) is in communication with the external connection hole (31); When the impeller (53) rotates, the lubricating oil in the power chamber (52) moves sequentially from the third connection port (57), the second connection port (56) and the first connection port (55).

2. The washing machine motor with built-in bearing lubrication according to claim 1, Features: The outer end of the external connection hole (31) is connected to the outside world, and a bolt is fastened at the position where it communicates with the outside world.

3. The washing machine motor with built-in bearing lubrication according to claim 1, Features: An annular cavity (33) communicating with the inner connecting hole (32) is formed on the inner wall of the through hole (11). At least two sealing rings (34) are also fixed on the inner wall of the through hole (11). The sealing rings (34) are respectively located on both sides of the annular cavity (33) and are used for being pressed against the outer wall of the rotating shaft (2).

4. The washing machine motor with built-in bearing lubrication according to claim 1, Features: The two end surfaces of the bearing body (4) are respectively fitted with the end cover (1) and the closing cover (51).

5. The washing machine motor with built-in bearing lubrication according to claim 1, Features: The rotating shaft (2) passes through the closing cover (51) and the power chamber (52), and the closing cover (51) and the power chamber (52) are in close contact with the outer wall of the rotating shaft (2).

6. The washing machine motor with built-in bearing lubrication according to claim 1, Features: An extension opening (531) is provided on the inner side of the impeller (53), and the extension opening (531) is communicated with the inner circulation opening (23). An inner extension layer (521) is extended inwardly from an inner wall of one side of the power chamber (52), and the inner extension layer (521) is made of rubber. One end of the impeller (53) is pressed against the inner extension layer (521), and the other end thereof is pressed against the outer end of the closing cover (51).

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