Labyrinth type sealing structure of oil seal

Abstract

The utility model provides an oil seal labyrinth type sealing structure, which relates to the technical field of oil seals and comprises an oil seal component, a labyrinth component A and a labyrinth component B, according to the oil seal assembly, when the oil seal assembly is installed between the rotating shaft and the device, in order to prevent lubricating oil from leaking out in the follow-up using process, the labyrinth assembly A and the labyrinth assembly B can be arranged on the oil seal assembly, and the labyrinth assembly A, the labyrinth assembly B and the oil seal assembly are used in cooperation, so that when the lubricating oil leaks out, the lubricating oil can be prevented from leaking out. And at the moment, the lubricating oil flows backwards into the mounting groove A and the mounting groove B, so that leakage of the lubricating oil is avoided, and external dust or liquid is prevented from entering the device due to leakage of the lubricating oil.

Description

Technical Field

[0001] The utility model relates to the technical field of oil seals, in particular to an oil seal labyrinth sealing structure. Background Art

[0002] To prevent oil leakage, oil seals are installed on the shafts extending from the engine body of automotive piston engines and transmissions. A common method is to install a single oil seal, often made of an elastomer. The oil seal installed at the front of the engine is called a front oil seal, while the oil seal installed at the rear of the engine, or at the output end, is called a rear oil seal.

[0003] In the prior art, during use, most oil seals have lubricating oil applied between the oil seal and the rotating shaft or between the oil seal and the connecting hole of the device. However, during use, the lubricating oil of the existing oil seals is very likely to overflow. Utility Model Content

[0004] The utility model mainly provides an oil seal labyrinth seal structure which can effectively prevent lubricating oil from overflowing.

[0005] In order to achieve the above object, the utility model adopts the following technical solution: an oil seal labyrinth seal structure, comprising: an oil seal assembly, an A labyrinth assembly is installed on the outer surface of the oil seal assembly, and a B labyrinth assembly is installed on the inner surface of the oil seal assembly;

[0006] The A labyrinth assembly includes an A baffle and an A leak-proof plate, both of which are mounted on the oil seal assembly. The A baffle 21 is deflected by 15°-30°, and the A leak-proof plate 22 is deflected by 30°-45°.

[0007] The B labyrinth assembly includes a B baffle and a B anti-leakage plate. The B baffle and the B anti-leakage plate are the same in size and shape as the A baffle and the A anti-leakage plate, and are symmetrically arranged.

[0008] Preferably, the oil seal assembly includes an outer rubber ring, a frame and an inner rubber ring, and the outer rubber ring and the inner rubber ring are respectively installed on the inner and outer surfaces of the frame and fit tightly.

[0009] Preferably, an A mounting groove is provided on the outer surface of the frame, and the A mounting groove extends outward and passes through the outer rubber ring surface, and a B mounting groove is provided on the inner surface of the frame, and the B mounting groove extends inward and passes through the inner rubber ring surface.

[0010] Preferably, the A baffle and the A anti-leakage plate are both installed in the A installation groove.

[0011] Preferably, the B baffle and the B anti-leakage plate are both installed in the B installation groove.

[0012] Preferably, chamfers are provided at the ends of the A mounting groove and the B mounting groove.

[0013] Compared with the prior art, the advantages and positive effects of the present invention are:

[0014] 1. In the present invention, the oil seal assembly can prevent external dust and liquid from entering the device through the connection gap, thereby protecting the components inside the device.

[0015] 2. In the present invention, the A labyrinth assembly and the B labyrinth assembly can prevent the lubricating oil between the rotating shaft and the connecting hole from leaking out. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model provides a first structural schematic diagram of an oil seal labyrinth seal structure.

[0017] Figure 2 The present invention provides a second structural schematic diagram of an oil seal labyrinth seal structure.

[0018] Figure 3 The utility model provides a cross-sectional structural schematic diagram of an oil seal labyrinth seal structure.

[0019] Figure 4 The utility model proposes Figure 3 Schematic diagram of the locally enlarged structure at point A in the middle.

[0020] Legend: 1. Oil seal assembly; 11. Outer rubber ring; 12. Frame; 13. Inner rubber ring; 2. A labyrinth assembly; 21. A baffle; 22. A leak-proof plate; 3. B labyrinth assembly; 31. B baffle; 32. B leak-proof plate. DETAILED DESCRIPTION

[0021] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] See also Figure 1-Figure 4 The utility model provides a technical solution: an oil seal labyrinth seal structure, comprising: an oil seal assembly 1, an A labyrinth assembly 2 is installed on the outer surface of the oil seal assembly 1, and a B labyrinth assembly 3 is installed on the inner surface of the oil seal assembly 1;

[0024] The A labyrinth assembly 2 includes an A baffle 21 and an A leak-proof plate 22. Both the A baffle 21 and the A leak-proof plate 22 are mounted on the oil seal assembly 1. The A baffle 21 is deflected by 15°-30°, and the A leak-proof plate 22 is deflected by 30°-45°.

[0025] The B labyrinth assembly 3 includes a B baffle 31 and a B leak prevention plate 32 . The B baffle 31 and the B leak prevention plate 32 have the same size and shape as the A baffle 21 and the A leak prevention plate 22 and are symmetrically arranged.

[0026] Specifically, when the oil seal assembly 1 is installed between the rotating shaft and the connecting hole of the device, the A labyrinth assembly 2 and the B labyrinth assembly 3 provided on the oil seal assembly 1 can effectively prevent the leakage of lubricating oil. The A labyrinth assembly 2 and the B labyrinth assembly 3 can store the lubricating oil therein, thereby preventing the leakage of the lubricating oil.

[0027] Furthermore, since the A baffle 21 and the A anti-leakage plate 22 are installed at different angles, during use, the lubricating oil will enter the A installation groove. Since the A baffle 21 is deflected by 15°-30° and the A anti-leakage plate 22 is deflected by 30°-45°, and since the deflection angles of the two are different, the lubricating oil entering therein will not be able to leak out due to the obstruction of the A baffle 21 and the A anti-leakage plate 22.

[0028] like Figure 1-Figure 4 As shown, the oil seal assembly 1 includes an outer rubber ring 11, a skeleton 12 and an inner rubber ring 13. The outer rubber ring 11 and the inner rubber ring 13 are respectively installed on the inner and outer surfaces of the skeleton 12 and fit tightly.

[0029] Specifically, in order to prevent external dust and liquid from entering the device through the connection gap during actual use, an outer rubber ring 11 and an inner rubber ring 13 are respectively installed on the inner and outer surfaces of the skeleton 12, and the two are tightly fitted to the skeleton 12, thereby preventing external dust or liquid from entering.

[0030] like Figure 1-Figure 4 As shown, the outer surface of the skeleton 12 is provided with an A mounting groove, and the A mounting groove extends outward and passes through the surface of the outer rubber ring 11. The inner surface of the skeleton 12 is provided with a B mounting groove, and the B mounting groove extends inward and passes through the surface of the inner rubber ring 13; the A baffle 21 and the A anti-leakage plate 22 are both installed in the A mounting groove; the B baffle 31 and the B anti-leakage plate 32 are both installed in the B mounting groove.

[0031] Specifically, during use, in order to enable the A baffle 21 and the A anti-leakage plate 22 as well as the B baffle 31 and the B anti-leakage plate 32 to be stably set on the oil seal assembly 1 and to prevent the lubricating oil from leaking, an A mounting groove and a B mounting groove are opened on the oil seal assembly 1, and the A maze assembly 2 and the B maze assembly 3 are respectively arranged inside the two. By using the A mounting groove and the A maze assembly 2 as well as the B mounting groove and the B maze assembly 3 in coordination, the lubricating oil can be mostly backflowed into the two slots when leaking, thereby preventing leakage.

[0032] like Figure 1-Figure 4 As shown, the ends of the A mounting groove and the B mounting groove are both provided with chamfers.

[0033] Specifically, in order to facilitate the lubricating oil to flow back into the two notches when leaking, chamfers are provided at the ends of the two notches.

[0034] The usage and working principle of this device: When the oil seal assembly 1 is installed between the rotating shaft and the device, in order to avoid leakage of lubricating oil during subsequent use, an A maze assembly 2 and a B maze assembly 3 can be set on the oil seal assembly 1. Through the coordinated use of the A maze assembly 2 and the B maze assembly 3 and the oil seal assembly 1, when the lubricating oil leaks, the lubricating oil will flow back into the A installation groove and the B installation groove, thereby avoiding leakage of the lubricating oil, and further preventing external dust or liquid from entering the interior of the device due to the leakage of the lubricating oil.

[0035] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. An oil seal labyrinth seal structure, characterized in that: include: An oil seal assembly (1), wherein an A labyrinth assembly (2) is mounted on an outer surface of the oil seal assembly (1), and a B labyrinth assembly (3) is mounted on an inner surface of the oil seal assembly (1); The A labyrinth assembly (2) comprises an A baffle (21) and an A leak prevention plate (22), both of which are mounted on the oil seal assembly (1), the A baffle (21) being deflected by 15°-30°, and the A leak prevention plate (22) being deflected by 30°-45°; The B labyrinth assembly (3) comprises a B baffle (31) and a B leak prevention plate (32), wherein the B baffle (31) and the B leak prevention plate (32) are of the same size and shape as the A baffle (21) and the A leak prevention plate (22), and are symmetrically arranged.

2. The oil seal labyrinth seal structure according to claim 1, characterized in that: The oil seal assembly (1) comprises an outer rubber ring (11), a frame (12) and an inner rubber ring (13); the outer rubber ring (11) and the inner rubber ring (13) are respectively mounted on the inner and outer surfaces of the frame (12) and are tightly fitted.

3. The oil seal labyrinth seal structure according to claim 2, characterized in that: The outer surface of the frame (12) is provided with an A mounting groove, which extends outward and penetrates the surface of the outer rubber ring (11); the inner surface of the frame (12) is provided with a B mounting groove, which extends inward and penetrates the surface of the inner rubber ring (13).

4. The oil seal labyrinth seal structure according to claim 3, characterized in that: The A baffle (21) and the A leak prevention plate (22) are both installed in the A installation groove.

5. The oil seal labyrinth seal structure according to claim 3, characterized in that: The B baffle (31) and the B leak prevention plate (32) are both installed in the B installation groove.

6. The oil seal labyrinth seal structure according to claim 3, characterized in that: The ends of the A mounting groove and the B mounting groove are both provided with chamfers.

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