Motor with bearing waterproof structure

Abstract

The utility model relates to a motor with a bearing waterproof structure, and relates to the field of wet and dry dual-purpose motors. In order to solve the problem that water vapor flows into an internal motor along a gap between the internal motor and a shaft rod extending out of the internal motor so as to penetrate through a bearing of the internal motor to cause short circuit when a movable impeller of the motor rotates due to increase of a turbine in the motor, the utility model adopts the technical scheme that the internal motor comprises an internal motor shell, a shaft rod matched with the rotor is arranged in the internal motor shell, and a sealing assembly is arranged at the end, extending out of the internal motor shell, of the shaft rod so as to seal a gap between the internal motor shell and the shaft rod. The application has the effect of reducing the situation of short circuit caused by water vapor entering the internal motor.

Description

Technical Field

[0001] The present application relates to the field of wet and dry dual-purpose motors, and in particular to a motor with a bearing waterproof structure. Background Art

[0002] Wet / dry waterproof motors typically offer the heat dissipation of conventional dry motors and the waterproofing of conventional wet motors. The motor housing is mechanically sealed to protect the drive mechanism within. To enhance the waterproofing of wet / dry motors, a sealing structure is installed within the motor itself during operation.

[0003] However, there is still a gap between the internal motor and the shaft extending from the internal motor. Although the diameter of this gap is small, when the impeller of the motor rotates, a turbine is generated inside the motor, causing water vapor to flow into the internal motor along the gap between the internal motor and the shaft extending from the internal motor, thereby passing through the bearings of the internal motor and causing a short circuit. Therefore, this problem needs to be improved. Utility Model Content

[0004] In order to reduce the occurrence of short circuits caused by water vapor entering the internal motor, the present application provides a motor with a bearing waterproof structure.

[0005] The present application provides a motor with a bearing waterproof structure adopting the following technical solutions:

[0006] A motor with a bearing waterproof structure includes an internal motor casing, a rotor is arranged in the internal motor casing, one end of the rotor extends from one end of the internal motor casing to form a shaft, and an encryption component is provided at the end of the shaft extending from the internal motor casing to seal the gap between the internal motor casing and the shaft.

[0007] By adopting the above technical solution and utilizing an encryption component, the gap between the internal motor housing and the shaft is sealed, thereby reducing the possibility of water vapor entering the internal motor and causing a short circuit.

[0008] Optionally, the encryption component includes a first waterproof cover plate, a second waterproof cover plate and a support member, the first waterproof cover plate and the second waterproof cover plate are both mounted on the shaft, the first waterproof cover plate is connected to the shaft, the second waterproof cover plate is located between the first waterproof cover plate and the internal motor casing, the second waterproof cover plate is sealed and fixedly connected to the internal motor casing, the support member is arranged between the second waterproof cover plate and the internal motor casing, and the support member respectively contacts the internal motor casing and the second waterproof cover plate to make the second waterproof cover plate and the first waterproof cover plate tightly connected.

[0009] By adopting the above technical solution, the structural relationship between the internal motor casing, the shaft, the first waterproof cover plate, the second waterproof cover plate and the support member is optimized. The support member applies a force value to tightly connect the first waterproof cover plate and the second waterproof cover plate, thereby improving the sealing and waterproof performance of the motor and extending the service life of the motor.

[0010] Optionally, a clamping ring groove is provided on the end wall of the internal motor casing close to the second waterproof cover plate, and the internal motor casing is protruded at the clamping ring groove to form a clamping ring. A yield ring groove is provided on the end wall of the second waterproof cover plate close to the internal motor casing, and the yield ring groove is located on the inner ring of the second waterproof cover plate. The yield ring groove forms a yield protrusion on the outer ring of the second waterproof cover plate, and the clamping ring is inserted into the yield ring groove, and the yield protrusion is inserted into the clamping ring groove. The outer ring side wall of the second waterproof cover plate is connected to the inner side wall of the clamping ring groove, and the support member is located in the clamping ring groove.

[0011] By adopting the above technical solution, the connection between the second waterproof cover and the internal motor casing is made more stable, and the mutual cooperation of the snap ring and the clearance ring groove enhances the sealing effect and ensures the waterproof performance.

[0012] Optionally, there is a gap between the end of the relief protrusion away from the first waterproof cover plate and the bottom of the snap ring groove, and the support member is located in the gap.

[0013] By adopting the above technical solution, a gap is created between the end of the positioning protrusion away from the first waterproof cover plate and the bottom of the snap ring groove, and the support member is located in the gap, ensuring that the support member can effectively apply force, so that the first waterproof cover plate and the second waterproof cover plate are tightly connected, further improving the sealing effect of the waterproof structure.

[0014] Optionally, the support member is a corrugated washer, the trough of the corrugated washer abuts against the bottom of the snap ring groove, and the crest of the corrugated washer abuts against the end wall of the yielding protrusion.

[0015] By adopting the above technical solution, the first and second waterproof cover plates are tightly connected by the corrugated gasket, which enhances the sealing effect. The provision of the corrugated gasket ensures stable contact pressure between the first and second waterproof cover plates, further improving the reliability of the waterproof structure.

[0016] Optionally, there is a gap between the second waterproof cover plate and the shaft rod.

[0017] By adopting the above technical solution, the design of a gap between the second waterproof cover and the shaft rod can ensure that the second waterproof cover plate will not directly contact the shaft rod during the assembly process, avoiding the wear that may be caused by direct contact, and further improving the overall sealing and service life of the motor.

[0018] Optionally, the inner ring and the outer ring of the end where the first waterproof cover plate and the second waterproof cover plate are close to each other are both provided with a guide surface.

[0019] By adopting the above technical solution, the inner ring and outer ring of the end close to each other of the first waterproof cover plate and the second waterproof cover plate are both provided with guide surfaces, which makes alignment and positioning more convenient during the assembly process, and at the same time can better guide the flow of liquid during operation, thereby improving the sealing effect.

[0020] Optionally, the first waterproof cover plate and the second waterproof cover plate are both made of graphite, so that the first waterproof cover plate and the second waterproof cover plate can self-lubricate when rotating at high speed.

[0021] By adopting the above technical solution, the first waterproof cover plate and the second waterproof cover plate are made of graphite material, so that they can self-lubricate during high-speed rotation, reduce resistance, enhance the sealing performance of the waterproof cover, and thus increase the service life of the motor bearing.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. By optimizing the structural relationship between the internal motor housing, shaft, first waterproof cover plate, second waterproof cover plate and support member, and adopting graphite material to achieve self-lubrication, the sealing and waterproof performance of the motor is improved and the service life of the motor is extended;

[0024] 2. The first and second waterproof covers are made of graphite, which enables self-lubrication during high-speed rotation, reduces resistance, enhances the sealing performance of the waterproof cover, and thus increases the service life of the motor bearings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural diagram of a motor with a bearing waterproof structure in an embodiment of the present application.

[0026] Figure 2 It is a cross-sectional view of an encryption component used to remind in an embodiment of the present application.

[0027] Figure 3 yes Figure 2 A is an enlarged schematic diagram.

[0028] Explanation of the accompanying drawings: 1. Internal motor housing; 11. Rotor; 12. Shaft; 13. Snap-in ring groove; 14. Snap-in ring; 2. Encryption component; 21. First waterproof cover plate; 22. Second waterproof cover plate; 221. Make way ring groove; 222. Make way protrusion; 23. Support member; 24. Guide surface. DETAILED DESCRIPTION

[0029] The following will be combined with the Figure 1-3The technical solutions in the embodiments of the present invention are clearly and completely described. The described embodiments are only possible technical implementations of the present invention and do not represent all possible implementations. Those skilled in the art can fully combine the embodiments of the present invention to derive other embodiments without inventive work, and these embodiments are also within the scope of protection of the present invention.

[0030] The embodiment of the present application provides a motor with a bearing waterproof structure, referring to Figure 1 and Figure 2 The motor comprises an internal motor housing 1, in which a stator and a rotor 11 are mounted. The rotor 11 is located on the axis of the internal motor housing 1, and the stator is located outside the rotor 11. One end of the rotor 11 extends from one end of the internal motor housing 1 to form a shaft 12. The end of the shaft 12 extending from the internal motor housing 1 is provided with an encryption component 2 to seal the gap between the internal motor housing 1 and the shaft 12. This structural innovation improves the waterproofing of the motor, thereby extending the service life of the motor.

[0031] Reference Figure 2 and Figure 3 The encryption component 2 includes a first waterproof cover plate 21, a second waterproof cover plate 22 and a support member 23. The first waterproof cover plate 21 and the second waterproof cover plate 22 are both sleeved on the shaft 12. The inner ring and the outer ring of the end where the first waterproof cover plate 21 and the second waterproof cover plate 22 are close to each other are both provided with a guide surface 24; the guide surface 24 of the inner ring can be conical or cylindrical, and the guide surface 24 of the outer ring can be a wedge or other transition structure, which can not only help the cover plate to be quickly positioned along the axial direction, but also enhance the sealing performance between the cover plate, the shaft 12 and the casing.

[0032] Reference Figure 3 The first waterproof cover plate 21 is connected to the shaft 12 and can be fixed to the shaft 12 by interference fit. The second waterproof cover plate 22 is located between the first waterproof cover plate 21 and the internal motor housing 1. The end wall of the internal motor housing 1 near the second waterproof cover plate 22 is provided with a snap ring groove 13. The internal motor housing 1 protrudes from the snap ring groove 13 to form a snap ring 14. The end wall of the second waterproof cover plate 22 near the internal motor housing 1 is provided with a clearance ring groove 221. The clearance ring groove 221 is located on the inner ring of the second waterproof cover plate 22. The clearance ring groove 221 forms a clearance protrusion 222 on the outer ring of the second waterproof cover plate 22. The clamping ring 14 is inserted into the clearance ring groove 221.

[0033] The outer sidewall of the second waterproof cover plate 22 is sealed and fixedly connected to the inner sidewall of the snap ring groove 13. Specifically, the second waterproof cover plate 22 can be fixed to the housing by adhesive bonding. Water-resistant polyurethane glue, such as a two-component polyurethane sealant, can be used as the adhesive, which provides excellent waterproofing after curing. The second waterproof cover plate 22 can also be fixed to the housing by press-fitting, for example, by pressing the aluminum shaft 12 and the hard silicon nitride second waterproof cover plate 22 together to achieve a tight connection.

[0034] The support member 23 can be a corrugated washer. The support member 23 is arranged between the second waterproof cover plate 22 and the internal motor housing 1. There is a gap between the end of the relief protrusion 222 away from the first waterproof cover plate 21 and the bottom of the snap ring groove 13, and the support member 23 is located in this gap. When a corrugated washer is used as the support member 23, its trough abuts against the bottom of the snap ring groove 13, and its crest abuts against the end wall of the relief protrusion 222. This design can achieve a tight connection between the two cover plates, and the pressure between the first waterproof cover plate 21 and the second waterproof cover plate 22 can be adjusted by increasing or decreasing the thickness of the corrugated washer. The corrugated washer can be made of metal material, such as spring steel or stainless steel, and the tightness between the first and second waterproof cover plates 22 is increased by elastic deformation of the support member 23.

[0035] Both the first waterproof cover plate 21 and the second waterproof cover plate 22 are made of graphite, enabling self-lubrication during high-speed rotation. Specifically, graphite exhibits excellent self-lubricating properties and is wear-resistant and heat-resistant. For example, the first waterproof cover plate 21 can be made of high-purity graphite, which exhibits extremely high density and self-lubricating properties, thereby reducing frictional resistance during high-speed operation and improving sealing effectiveness.

[0036] The implementation principle of a motor with a bearing waterproof structure in this embodiment is: by optimizing the structural relationship between the internal motor housing 1, the shaft 12, the first waterproof cover plate 21, the second waterproof cover plate 22 and the support member 23, and using graphite material to achieve self-lubrication, the sealing and waterproof performance of the motor is improved, and the service life of the motor is extended.

[0037] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A motor with a bearing waterproof structure, characterized in that: The invention comprises an internal motor casing (1), wherein a rotor (11) is arranged in the internal motor casing (1), one end of the rotor (11) extends from one end of the internal motor casing (1) to form a shaft (12), and an encryption component (2) is arranged at one end of the shaft (12) extending from the internal motor casing (1) to seal the gap between the internal motor casing (1) and the shaft (12); The encryption component (2) comprises a first waterproof cover plate (21), a second waterproof cover plate (22) and a support member (23); the first waterproof cover plate (21) and the second waterproof cover plate (22) are both sleeved on the shaft (12); the first waterproof cover plate (21) is connected to the shaft (12); the second waterproof cover plate (22) is located between the first waterproof cover plate (21) and the internal motor housing (1); the second waterproof cover plate (22) is sealed and fixedly connected to the internal motor housing (1); the support member (23) is arranged between the second waterproof cover plate (22) and the internal motor housing (1); the support member (23) respectively contacts the internal motor housing (1) and the second waterproof cover plate (22) so that the second waterproof cover plate (22) and the first waterproof cover plate (21) are tightly connected.

2. The motor with a bearing waterproof structure according to claim 1, characterized in that: The inner motor housing (1) is provided with a snap ring groove (13) on the end wall close to the second waterproof cover plate (22); the inner motor housing (1) is protruded at the snap ring groove (13) to form a snap ring (14); the second waterproof cover plate (22) is provided with a clearance ring groove (221) on the end wall close to the inner motor housing (1); the clearance ring groove (221) is located on the inner ring of the second waterproof cover plate (22); the clearance ring groove (221) forms a clearance protrusion (222) on the outer ring of the second waterproof cover plate (22); the snap ring (14) is inserted into the clearance ring groove (221); the clearance protrusion (222) is inserted into the snap ring groove (13); the outer ring side wall of the second waterproof cover plate (22) is connected to the inner side wall of the snap ring groove (13); and the support member (23) is located in the snap ring groove (13).

3. The motor with a bearing waterproof structure according to claim 2, characterized in that: There is a gap between the end of the relief protrusion (222) away from the first waterproof cover plate (21) and the bottom of the snap ring groove (13), and the support member (23) is located in the gap.

4. The motor with a bearing waterproof structure according to claim 3, characterized in that: The support member (23) is a wave washer, the trough of the wave washer abuts against the bottom of the snap ring groove (13), and the peak of the wave washer abuts against the end wall of the relief protrusion (222).

5. The motor with a bearing waterproof structure according to claim 1, characterized in that: There is a gap between the second waterproof cover plate (22) and the shaft (12).

6. The motor with a bearing waterproof structure according to claim 1, characterized in that: The inner ring and the outer ring of the end of the first waterproof cover plate (21) and the second waterproof cover plate (22) close to each other are both provided with a guide surface (24).

7. The motor with a bearing waterproof structure according to claim 1, characterized in that: The first waterproof cover plate (21) and the second waterproof cover plate (22) are both made of graphite, so that the first waterproof cover plate (21) and the second waterproof cover plate (22) can self-lubricate when rotating at high speed.

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