Novel shaft-abrasion-free labyrinth type framework oil seal

Abstract

The utility model discloses a novel shaft-abrasion-free labyrinth type framework oil seal which comprises an outer oil seal framework, an outer sealing body, an inner oil seal framework and an inner sealing body. The outer oil seal framework is arranged on one side of the inner oil seal framework, the outer sealing body is located on one side of the outer oil seal framework, and the inner sealing body is located on one side of the inner oil seal framework. A dustproof lip set and a main sealing lip are sequentially arranged on the side, close to the inner oil seal framework, of the outer sealing body, and an oil seal is formed between the dustproof lip set and the main sealing lip. According to the oil seal, the labyrinth type dustproof lip design is adopted, the sealing effect of the oil seal is greatly improved, the dustproof lip set effectively prevents external muddy water and sand dust from entering the sealing cavity of the oil seal, most engine oil is sealed through the main sealing lip, and the oil leakage condition is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of bearing seals, and more specifically relates to a new non-shaft-wearing labyrinth type skeleton oil seal. Background Art

[0002] The function of an oil seal is to isolate the components that need lubrication in a transmission component from the external environment to prevent lubricating oil from leaking. Generally speaking, an oil seal refers to a skeleton oil seal. At present, the part of the oil seal that is in long-term contact with the rotating shaft is damaged due to long-term friction, and oil leakage is likely to occur. If the skeleton oil seal is not replaced in time, it will cause a reduction in lubricating oil and even lead to accidents. Content of the Utility Model

[0003] In view of this, the utility model aims to solve at least one of the problems in the above background art, and provides a new non-shaft-wearing labyrinth type skeleton oil seal. By adopting a labyrinth dust-proof lip design, the sealing effect of the oil seal is greatly improved. The dust-proof lip group effectively prevents external mud, water and dust from entering the sealing cavity of the oil seal, and the main sealing lip seals the vast majority of engine oil, reducing the occurrence of oil leakage.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A new non-shaft-wearing labyrinth type skeleton oil seal includes: an outer oil seal skeleton, an outer seal body, an inner oil seal skeleton and an inner seal body; the outer oil seal skeleton is arranged on one side of the inner oil seal skeleton, the outer seal body is located on one side of the outer oil seal skeleton, and the inner seal body is located on one side of the inner oil seal skeleton; a dust-proof lip group and a main sealing lip are sequentially arranged on the side of the outer seal body close to the inner oil seal skeleton, and an oil seal is formed between the dust-proof lip group and the main sealing lip.

[0006] Further, both the inner oil seal skeleton and the outer oil seal skeleton are in an "L" shape.

[0007] Further, the dust-proof lip group includes a plurality of first dust-proof lips, one end of each first dust-proof lip is connected to the outer seal body, and the other end abuts against the inner oil seal skeleton.

[0008] Further, one end of the outer seal body extends to the bottom side of the inner oil seal skeleton, and a second dust-proof lip is connected thereto, and the end of the second dust-proof lip abuts against the inner oil seal skeleton.

[0009] Further, a secondary sealing lip is connected to the position of the outer seal body close to the end of the inner oil seal skeleton, and the end of the secondary sealing lip abuts against the inner oil seal skeleton.

[0010] Further, a slot hole is arranged on one side of the main sealing lip, and an oil seal spring is arranged in the slot hole.

[0011] Furthermore, a trapezoidal groove is provided at the end of the inner seal body, and a locking spring is arranged in the trapezoidal groove.

[0012] The beneficial effects of the present utility model are as follows:

[0013] The structure of the present utility model is simple. By adopting the labyrinth dust-proof lip design, the sealing effect of the oil seal is greatly improved. The dust-proof lip group effectively prevents external mud, water and sand from entering the sealing cavity of the oil seal. The main sealing lip seals the vast majority of engine oil, reducing the occurrence of oil leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings described below are only the embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0015] Figure 1 It is a schematic structural diagram of the present utility model.

[0016] Among them, in the figure:

[0017] 1 - outer oil seal skeleton; 2 - outer seal body; 3 - inner oil seal skeleton; 4 - inner seal body; 5 - main sealing lip; 6 - oil seal; 7 - first dust-proof lip; 8 - second dust-proof lip; 9 - auxiliary sealing lip; 10 - oil seal spring; 11 - locking spring. SPECIFIC EMBODIMENTS

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in combination with the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0019] Reference Figure 1, the present utility model provides a novel non-abrasive shaft labyrinth type skeleton oil seal, including: an outer oil seal skeleton 1, an outer seal body 2, an inner oil seal skeleton 3 and an inner seal body 4; the outer oil seal skeleton 1 is arranged on one side of the inner oil seal skeleton 3, the outer seal body 2 is located on one side of the outer oil seal skeleton 1, and the inner seal body 4 is located on one side of the inner oil seal skeleton 3; on the side of the outer seal body 2 close to the inner oil seal skeleton 3, a dust-proof lip group and a main seal lip 5 are sequentially arranged, and an oil seal 6 is formed between the dust-proof lip group and the main seal lip 5. The labyrinth type skeleton oil seal is used to increase the flow resistance of the leaked lubricating oil, reduce the flow pressure of the lubricating oil, avoid the leakage of the lubricating oil, and greatly reduce the shaft wear.

[0020] In a further optimized solution, both the inner oil seal skeleton 3 and the outer oil seal skeleton 1 are in an "L" shape, with a relatively regular shape, which is convenient for processing.

[0021] In a further optimized solution, the dust-proof lip group includes a plurality of first dust-proof lips 7, one end of the first dust-proof lip 7 is connected to the outer seal body 2, and the other end abuts against the inner oil seal skeleton 3. In this embodiment, two first dust-proof lips are provided, which not only reduces the cost of the oil seal but also ensures the dust-proof effect.

[0022] In a further optimized solution, one end of the outer seal body 2 extends to the bottom side of the inner oil seal skeleton 3, and a second dust-proof lip 8 is connected thereto. The end of the second dust-proof lip 8 abuts against the inner oil seal skeleton 3, further improving the protection effect against mud and dust.

[0023] In a further optimized solution, a secondary seal lip 9 is connected to the outer seal body 2 at a position close to the end of the inner oil seal skeleton 3. The end of the secondary seal lip 9 abuts against the inner oil seal skeleton 3, further improving the sealing performance of the skeleton oil seal.

[0024] In a further optimized solution, a slot is provided on one side of the main seal lip 5, and an oil seal spring 10 is arranged in the slot. Applying a force to the main seal lip 5 to approach the rotating shaft can effectively solve the problem that the main seal lip cannot continue to seal due to wear, and increase the service life of the skeleton oil seal.

[0025] In a further optimized solution, a trapezoidal groove is provided at the end of the inner seal body 4, and a locking spring 11 is arranged in the trapezoidal groove, which can lock the rotating shaft, has good sealing performance and good oil leakage prevention performance, thereby greatly improving the effect of the dust-proof lip group to prevent mud and water from entering the oil seal.

[0026] The structure of the present utility model is simple. By adopting the labyrinth type dust-proof lip design, the sealing effect of the oil seal is greatly improved. The dust-proof lip group effectively prevents external mud, water and dust from entering the sealing cavity of the oil seal, and the main seal lip seals the vast majority of the engine oil, reducing the occurrence of oil leakage.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A novel non-abrasive shaft labyrinth type skeleton oil seal, characterized in that, Comprising: An outer oil seal skeleton, an outer seal body, an inner oil seal skeleton and an inner seal body; the outer oil seal skeleton is arranged on one side of the inner oil seal skeleton, the outer seal body is located on one side of the outer oil seal skeleton, and the inner seal body is located on one side of the inner oil seal skeleton; a dust-proof lip group and a main seal lip are sequentially arranged on the side of the outer seal body close to the inner oil seal skeleton, and an oil seal is formed between the dust-proof lip group and the main seal lip.

2. A novel non-abrasive shaft labyrinth type skeleton oil seal according to claim 1, characterized in that, Both the inner oil seal skeleton and the outer oil seal skeleton are in an "L" shape.

3. A novel non-abrasive shaft labyrinth type skeleton oil seal according to claim 1, characterized in that, The dust-proof lip group includes a plurality of first dust-proof lips, one end of each first dust-proof lip is connected to the outer seal body, and the other end abuts against the inner oil seal skeleton.

4. A novel non-abrasive shaft labyrinth type skeleton oil seal according to claim 3, characterized in that, One end of the outer seal body extends to the bottom side of the inner oil seal skeleton, and a second dust-proof lip is connected thereto, and the end of the second dust-proof lip abuts against the inner oil seal skeleton.

5. A novel non-abrasive shaft labyrinth type skeleton oil seal according to claim 4, characterized in that, A secondary seal lip is connected to the outer seal body at a position close to the end of the inner oil seal skeleton, and the end of the secondary seal lip abuts against the inner oil seal skeleton.

6. A novel non-abrasive shaft labyrinth type skeleton oil seal according to claim 5, characterized in that, A slot is provided on one side of the main seal lip, and an oil seal spring is arranged in the slot.

7. A novel non-abrasive shaft labyrinth type skeleton oil seal according to claim 6, characterized in that, A trapezoidal groove is provided at the end of the inner seal body, and a locking spring is arranged in the trapezoidal groove.

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