Oil seal waterproof structure

Abstract

The utility model discloses an oil seal waterproof structure, belongs to the technical field of motors, and solves the problem that in the prior art, a sealing ring is loosened after being used for a period of time, and then the airtightness of a motor is affected. The device comprises a framework, a cover plate and a bearing. The annular area formed between the two bearings and the framework can contain oil, the air tightness of the oil is good, and the sealing requirement of the motor can be met. The sealing plates fixedly connected with the outer walls of the two opposite sides of the two bearings can prevent oil from overflowing towards the two axial ends of the two bearings, the oil is injected into the annular area when the motor needs to be sealed, and operation is convenient.

Description

Technical Field

[0001] The present application relates to the field of motor technology, and in particular to an oil seal waterproof structure. Background Art

[0002] The motor is mainly composed of a stator and a rotor. The rotor of the motor is mostly made of magnetic iron (silicon steel), which is very easy to corrode in a humid environment. The rotor will be corroded by humid water vapor, which will affect the rotation accuracy of the rotor.

[0003] A sealed waterproof motor is disclosed in the patent with the announcement number CN210669700U. The device realizes the sealing between the cover and the motor shaft through the sealing ring, thereby preventing the liquid from entering the cover through the gap between the cover and the shell, and then entering the shell. In this device, the sealing ring will loosen after being used for a period of time, which may lead to the problem of poor sealing of the motor.

[0004] Therefore, the technical problem to be solved by this application is: how to improve the air tightness of the motor. Utility Model Content

[0005] The purpose of this application is to address the above-mentioned problems existing in the prior art and to propose an oil seal waterproof structure, which solves the problem in the prior art that the sealing ring will become loose after a period of use, thereby affecting the air tightness of the motor. The technical effect of the present application scheme is: it can improve the air tightness of the motor.

[0006] The present application can be implemented through the following technical scheme: an oil seal waterproof structure, comprising a frame, a cover plate and a bearing. The cover plate is fixedly connected to one axial end of the frame; the bearing is configured with two bearings, which are arranged at intervals and have overlapping axes, the inner rings of the two bearings are fixedly connected to the same shaft, the shaft is passed through the frame, the outer rings of the two bearings are clamped with the inner wall of the frame, so that the outer rings of the bearings are fixed relative to the frame, an annular area is formed between the two bearings and the frame, the annular area is filled with oil, and the two opposite outer end faces of the two bearings are fixedly connected to a sealing plate.

[0007] In the above technical solution, the annular area formed between the two bearings and the frame can accommodate oil, and the oil has good air tightness, which can meet the sealing requirements of the motor; the sealing plates fixedly connected to the outer walls on both sides of the two bearings can prevent the oil from overflowing to the axial ends of the two bearings. When the motor needs to be sealed, the oil can be injected into the annular area, which is relatively convenient to operate.

[0008] Furthermore, the shaft comprises a shaft body and an annular belt. The annular belt is integrally formed with the body and the axis thereof coincides with the annular belt, and the annular belt protrudes from the shaft body; wherein the two outer end faces of the two bearings are in one-to-one contact with two gaskets, and a spring is wound around the shaft body, and the end of the spring close to the annular belt contacts the end face of the annular belt, and the spring can apply force to the gasket close to the annular belt, so that the position of the gasket close to the annular belt is fixed, and the gasket away from the annular belt is clamped with the inner wall of the frame, so that the position of the gasket away from the annular belt is fixed.

[0009] In the above technical solution, the gasket facing away from the annular band is clamped with the inner wall of the frame so that the position of the gasket facing away from the annular band is fixed; the spring can apply force to the gasket close to the annular band so that the gasket fits tightly with the bearing close to the annular band, thereby further reducing the possibility of oil leakage in the annular area and improving the sealing effect.

[0010] Furthermore, the frame includes a placement frame and a mounting block. One axial end of the placement frame is fixedly connected to the cover plate, and the outer rings of the two bearings are clamped with the inner wall of the placement frame; the mounting block is clamped with one end of the placement frame away from the cover plate, and one end of the mounting block close to the cover plate can be clamped with the gasket away from the annular belt.

[0011] In the above technical solution, after the staff passes the shaft through the placement rack, they can clamp the mounting block with the placement rack. At this time, the end of the mounting block close to the cover plate is clamped with the gasket facing away from the annular belt. The mounting block can protect the gasket and reduce the possibility of oil leakage from the gasket facing away from the cover plate.

[0012] Furthermore, the mounting block is formed with an annular groove, and the axial outer wall of the shaft body is formed with a positioning annular groove, a clamping piece is provided between the positioning annular groove and the annular groove, and the positioning annular groove can be clamped with the annular groove through the clamping piece.

[0013] In the above technical solution, the clamping member can contact the annular groove and the positioning annular groove, thereby further fixing the position of the shaft relative to the frame to ensure that the shaft can rotate at the same position relative to the frame.

[0014] Furthermore, the clamping member is a clamping spring.

[0015] In the above technical solution, the retaining spring can be engaged with the annular groove and the positioning ring groove at the same time, so as to further fix the position of the shaft relative to the frame to ensure that the shaft can rotate at the same position relative to the frame.

[0016] Furthermore, the cover plate is axially formed with a through hole, and the shaft is passed through the through hole.

[0017] In the above technical solution, the shaft can be inserted into the through hole, and the motor can become a dual-output shaft motor with a wider range of applications.

[0018] Furthermore, a rubber pad is adhered to the inner wall of the frame, the shaft body is passed through the rubber pad, the gasket close to the annular belt can contact the end of the rubber pad away from the annular belt, and the rubber pad and the gasket have an annular overlapping area.

[0019] In the above technical solution, the gasket close to the annular belt can contact the end of the rubber pad away from the annular belt, and the rubber pad has a certain viscosity to the gasket, which can further improve the sealing effect.

[0020] Furthermore, the axial end of the spring facing away from the annular band can contact the annular overlap area, and the spring can apply force to the gasket close to the annular band through the rubber pad.

[0021] In the above technical solution, the axial end of the spring away from the annular band can contact the annular overlap area, so that the spring can apply force to the gasket close to the annular band through the rubber pad, thereby making the gasket and the rubber pad fit more closely and having a better sealing effect.

[0022] To sum up, the present application has the following technical effects: the annular area formed between the two bearings and the frame can accommodate oil, and the sealing plates fixedly connected to the outer walls on both sides of the two bearings can prevent oil from overflowing to the axial ends of the two bearings. When the motor needs to be sealed, the oil can be injected into the annular area, which is more convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of Embodiment 1 of the present application;

[0024] Figure 2 is a schematic diagram of the position of the sealing sheet in this application;

[0025] Figure 3 It is a structural schematic diagram of the circlip of the present application;

[0026] Figure 4 It is a schematic diagram of the overall structure of the second embodiment of the present application;

[0027] Figure 5 It is a schematic diagram of the overall structure of Example 3 of the present application.

[0028] Description of reference numerals:

[0029] 1. Skeleton; 11. Placement frame; 12. Mounting block; 121. Annular groove; 2. Cover plate; 21. Through hole; 3. Bearing; 31. Sealing plate; 4. Shaft; 41. Shaft body; 411. Positioning ring groove; 42. Annular belt; 5. Annular area; 6. Gasket; 7. Spring; 8. Clip; 9. Rubber pad. DETAILED DESCRIPTION

[0030] Embodiment 1:

[0031] Please refer to the attached drawings in the instruction manual. Figure 1 and Figure 2 An embodiment of the present application provides an oil seal waterproof structure, including a skeleton 1, the skeleton 1 includes a placement frame 11, the placement frame 11 is detachably mounted with a cover plate 2, and a shaft 4 is passed through the axial direction of the placement frame 11. The inner wall of the placement frame 11 is clamped with the outer rings of the two bearings 3, the axes of the two bearings 3 coincide with the axis of the placement frame 11, and the inner rings of the two bearings 3 are clamped with an axis 4, so that the position of the shaft 4 is fixed. The two bearings 3 are placed at intervals, and an annular area 5 is formed between the placement frame 11, the two bearings 3 and the shaft 4. The annular area 5 is used for oil injection, and the oil has good air tightness. The two opposite outer end faces of the two bearings 3 are fixedly connected with a sealing plate 31, so that the oil will not leak to the axial ends of the two bearings 3. After the shaft 4 is installed, the cover plate 2 can be installed on the placement frame 11, and the cover plate 2 can seal the placement frame 11, thereby preventing water vapor from entering the inside of the placement frame 11 and corroding the shaft 4.

[0032] Please refer to the attached drawings in the instruction manual. Figure 1 The shaft 4 includes a shaft body 41, and an annular belt 42 is integrally formed on the axial outer wall of the shaft body 41. The axis of the annular belt 42 coincides with the axis of the shaft body 41, and the annular belt 42 protrudes from the shaft body 41. The shaft body 41 is clamped with the inner rings of the two bearings 3. The two opposite outer end faces of the two bearings 3 are both in contact with a gasket 6, and the two gaskets 6 are both sleeved on the shaft body 41. A spring 7 is wound around the shaft body 41, and the axis of the spring 7 coincides with the axis of the shaft body 41, and one axial end of the spring 7 is in contact with one end face of the annular belt 42, and one end of the spring 7 axially away from the annular belt 42 is in contact with an end face of the gasket 6 close to the annular belt 42, so that the position of the gasket 6 close to the annular belt 42 is fixed, and the spring 7 can apply force to the gasket 6 close to the annular belt 42, so that the position of the gasket 6 is fixed. Placing the gasket 6 can further reduce the possibility of oil leakage in the annular area 5.

[0033] Please refer to the attached drawings in the instruction manual. Figure 1 and Figure 3 The skeleton 1 also includes a mounting block 12, the axis of the mounting block 12 coincides with the axis of the shaft 4, the end of the mounting block 12 close to the annular belt 42 can abut against the end face of the bearing 3 away from the annular belt 42, and the end of the mounting block 12 close to the annular belt 42 can be clamped with the gasket 6 away from the annular belt 42, so that the position of the bearing 3 away from the annular belt 42 and the gasket 6 are fixed. An annular groove 121 is formed on the end of the mounting block 12 away from the annular belt 42, and an annular groove 121 is formed on the axial outer wall of the shaft body 41. A clamping member 8 is placed between the annular groove 121 and the positioning ring groove 411. The clamping member 8 can be a retaining spring, which is a C-shaped retaining spring. This further fixes the position of the shaft 4 relative to the skeleton 1, thereby ensuring that the shaft 4 can rotate at the same position relative to the skeleton 1.

[0034] The working principle of this embodiment: when the motor needs to be sealed, firstly, the spring 7 is wound around the shaft body 41, and then a gasket 6 and a bearing 3 are successively inserted into the shaft body 41, and then the shaft 4 is inserted into the placement frame 11 until the bearing 3 is engaged with the inner wall of the placement frame 11, and then the cover plate 2 is installed on the placement frame 11, and then oil can be injected into the annular area 5 through the end of the placement frame 11 away from the cover plate 2. After the oil injection is completed, another bearing 3 and another gasket 6 are successively sleeved on the shaft body 41 from the end of the placement frame 11 away from the annular belt 42, so that the other bearing 3 is engaged with the inner wall of the placement frame 11, and then the clamping member 8 is clamped into the positioning ring groove 411, and then the mounting block 12 is clamped with the placement frame 11, and then the clamping member 8 is clamped with the annular groove 121, and the fixing of the shaft 4 is completed.

[0035] Embodiment 2:

[0036] Please refer to the attached drawings in the instruction manual. Figure 4 The structure and principle of this embodiment are basically the same as those of the first embodiment, except that a rubber pad 9 is adhered to the inner wall of the skeleton 1, the shaft body 41 is penetrated through the rubber pad 9, the gasket 6 close to the annular belt 42 can contact with the end of the rubber pad 9 away from the annular belt 42, and the rubber pad 9 and the gasket 6 have an annular overlap area. The axial end of the spring 7 away from the annular belt 42 can contact with the annular overlap area, so that the spring 7 can apply force to the gasket 6 close to the annular belt 42 through the rubber pad 9. The rubber pad 9 has a certain viscosity to the gasket 6, and the spring 7 can apply force to the gasket 6 through the rubber pad 9, so that the rubber pad 9 and the gasket 6 can fit tightly, thereby reducing the possibility of oil leaking into the inside of the placement rack 11.

[0037] The working principle of this embodiment is as follows: the spring 7 can apply force to the gasket 6 through the rubber pad 9, which can further reduce the possibility of oil leaking into the interior of the placement rack 11.

[0038] Embodiment three:

[0039] Please refer to the attached drawings in the instruction manual. Figure 5 The structure and principle of this embodiment are basically the same as those of the first embodiment, except that a through hole 21 is formed axially on the cover plate 2, and the shaft 4 can pass through the through hole 21, so that the motor has two rotating shafts 4.

[0040] The working principle of this embodiment is as follows: the cover plate 2 is axially formed with a through hole 21, and the shaft 4 can pass through the through hole 21. At this time, the motor has two output shafts, so that the motor has a wider range of application.

[0041] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An oil seal waterproof structure, characterized in that: include: Skeleton (1); A cover plate (2), wherein the cover plate (2) is fixedly connected to one axial end of the frame (1); The invention relates to a bearing (3), wherein two bearings (3) are provided, the two bearings (3) are spaced apart and their axes coincide with each other, the inner rings of the two bearings (3) are fixedly connected to the same shaft (4), the shaft (4) is passed through the frame (1), the outer rings of the two bearings (3) are clamped to the inner wall of the frame (1), so that the outer rings of the bearings (3) are fixed relative to the frame (1), an annular area (5) is formed between the two bearings (3) and the frame (1), the annular area (5) is filled with oil, and the two opposite outer end faces of the two bearings (3) are fixedly connected to a sealing plate (31).

2. The oil seal waterproof structure according to claim 1, characterized in that: The shaft (4) comprises: Axle body (41); an annular belt (42), the annular belt (42) is integrally formed with the body and the axis thereof coincides with the body, and the annular belt (42) protrudes from the shaft body (41); The two bearings (3) are in contact with the two gaskets (6) at their two outer end faces, and a spring (7) is wound around the shaft body (41). The axial end of the spring (7) close to the annular belt (42) is in contact with the end face of the annular belt (42), and the spring (7) can apply force to the gasket (6) close to the annular belt (42) so that the position of the gasket (6) close to the annular belt (42) is fixed, and the gasket (6) away from the annular belt (42) is clamped with the inner wall of the frame (1) so that the position of the gasket (6) away from the annular belt (42) is fixed.

3. The oil seal waterproof structure according to claim 2, characterized in that: The skeleton (1) comprises: A placement rack (11), wherein one axial end of the placement rack (11) is fixedly connected to the cover plate (2), and the outer rings of the two bearings (3) are both clamped to the inner wall of the placement rack (11); A mounting block (12) is clamped with an end of the placement frame (11) away from the cover plate (2), and an end of the mounting block (12) close to the cover plate (2) can be clamped with a gasket (6) away from the annular belt (42).

4. The oil seal waterproof structure according to claim 3, characterized in that: The mounting block (12) is formed with an annular groove (121), and the axial outer wall of the shaft body (41) is formed with a positioning annular groove (411), a clamping piece (8) is provided between the positioning annular groove (411) and the annular groove (121), and the positioning annular groove (411) can be clamped with the annular groove (121) via the clamping piece (8).

5. The oil seal waterproof structure according to claim 4, characterized in that: The clamping member (8) is a clamping spring.

6. The oil seal waterproof structure according to claim 1, characterized in that: The cover plate (2) is axially formed with a through hole (21), and the shaft (4) is inserted into the through hole (21).

7. The oil seal waterproof structure according to claim 2, characterized in that: A rubber pad (9) is adhered to the inner wall of the frame (1), the shaft body (41) is inserted into the rubber pad (9), the gasket (6) close to the annular belt (42) can contact the end of the rubber pad (9) away from the annular belt (42), and the rubber pad (9) and the gasket (6) have an annular overlapping area.

8. The oil seal waterproof structure according to claim 7, characterized in that: The axial end of the spring (7) facing away from the annular belt (42) can contact the annular overlap area, and the spring (7) can apply force to the gasket (6) close to the annular belt (42) through the rubber pad (9).

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