Sealing structure suitable for motor shaft end

Abstract

The utility model particularly relates to a sealing structure suitable for a motor shaft end, the sealing structure comprises a first oil seal and a second oil seal which are arranged in a paired mode, the first oil seal comprises a first oil seal framework and a first oil seal elastic body, the first oil seal elastic body is provided with a main lip and an auxiliary lip, and an oil seal spring is arranged outside the main lip in a surrounding mode; the second oil seal comprises a second oil seal framework and a second oil seal elastic body, and a front lip is arranged on the second oil seal elastic body; the front lip is additionally arranged on the second oil seal elastic body, so that the front lip can prevent metal particles from entering, abrasion of the main lip is avoided, and the sealing performance of the sealing structure is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical sealing technical field, concretely relates to a sealing structure suitable for motor shaft end. BACKGROUND

[0002] In prior art, the automobile engine has the characteristics of high speed, high temperature, high sealing performance requirement, etc. In order to prevent oil leakage, the oil seal is installed in the part of the crankshaft of the automobile piston engine extending out of the engine body. The commonly used oil seal is mostly an elastomer and is installed in the oil seal seat hole. When the engine is working, the engine oil is leaked from the gap between the bearing bush and the crankshaft in the bearing seat, is splashed by the rotating shaft end to the oil seal sealing lip and is lubricated, and flows back to the engine oil pan from the lower oil leakage overflow port. The sealing lip of the oil seal often adopts a one-way oil return line, and the oil seal lip is worn, aged and cracked. SUMMARY

[0003] In prior art, the oil seal lip is worn, aged and cracked after being used for a long time.

[0004] The utility model provides a sealing structure suitable for motor shaft end, sealing structure includes the first oil seal and second oil seal of opposite setting, first oil seal includes first oil seal framework and first oil seal elastomer, main lip and deputy lip are provided on first oil seal elastomer, and the outside of main lip is surrounded and is provided with oil seal spring, second oil seal includes second oil seal framework and second oil seal elastomer, and the front lip is provided on second oil seal elastomer.

[0005] Specifically, one of the main technical ideas of the utility model is that the sealing structure suitable for motor shaft end includes the first oil seal and the second oil seal arranged oppositely, the first oil seal includes the first oil seal framework and the first oil seal elastomer, the main lip and the deputy lip are arranged on the first oil seal elastomer, and the oil seal spring is arranged around the outside of the main lip; the second oil seal includes the second oil seal framework and the second oil seal elastomer, and the front lip is arranged on the second oil seal elastomer; by adding the front lip on the second oil seal elastomer, the front lip can block the metal particles from entering, avoid the wear of the main lip, and improve the sealing performance of the sealing structure.

[0006] Further, one end of the second oil seal framework is a flat end, and the front lip is arranged on the lower half of the flat end of the second oil seal framework.

[0007] Further, the second oil seals are oppositely arranged, and the first oil seal framework is arranged around the outside of the second oil seal.

[0008] Further, the first oil seal elastomer is like glue and is coated on the first inner side of the first oil seal framework, and the first oil seal framework is a metal framework.

[0009] Further, the second oil seal elastomer is fluorine rubber and is coated on the inner side of the second oil seal framework, and the second oil seal framework is an exposed metal framework.

[0010] Further, the front lip is made of nano filler rubber.

[0011] Further, the main lip and the auxiliary lip are made of fluorine rubber. BRIEF DESCRIPTION OF DRAWINGS

[0012] The utility model will be described in further detail below by combining with the drawings and preferred embodiments, but the person skilled in the art will appreciate that these drawings are only drawn for the purpose of explaining the preferred embodiments and therefore should not be regarded as limiting the scope of the utility model. In addition, unless specifically indicated, the drawings only schematically show the composition or structure of the described object and can contain exaggerated display, and the drawings are not necessarily drawn to scale.

[0013] Figure 1 The utility model provides a kind of stereostructure of sealing structure suitable for motor shaft end of an embodiment.

[0014] 11, first oil seal framework;12, first oil seal elastomer;13, main lip;14, auxiliary lip;15, oil seal spring;21, second oil seal framework;22, second oil seal elastomer;23, front lip. DETAILED DESCRIPTION

[0015] The utility model will be described in further detail below by combining with the drawings and preferred embodiments, but the person skilled in the art will appreciate that these drawings are only drawn for the purpose of explaining the preferred embodiments and therefore should not be regarded as limiting the scope of the utility model. In addition, unless specifically indicated, the drawings only schematically show the composition or structure of the described object and can contain exaggerated display, and the drawings are not necessarily drawn to scale. Figure 1 Detailed description of the utility model.

[0016] In order to make the purpose, technical scheme and advantage of the utility model more clear and obvious, the following will be combined with drawing and embodiment, and the utility model is further described in detail. It should be understood that the specific embodiments described herein are only used to explain the utility model, and not used to limit the utility model.

[0017] The main technical concept of the utility model is that the sealing structure suitable for motor shaft end includes first oil seal and second oil seal arranged in pairs, the first oil seal includes first oil seal framework and first oil seal elastomer, the first oil seal elastomer is provided with main lip and auxiliary lip, and oil seal spring is arranged around the outside of main lip;Second oil seal includes second oil seal framework and second oil seal elastomer, and the second oil seal elastomer is provided with front lip;By adding front lip on the second oil seal elastomer, the front lip can block metal particles from entering, avoid main lip abrasion, and improve the sealing property of sealing structure.

[0018] Further, please see Figure 1The utility model provides a kind of three-dimensional and side view structure schematic diagram of sealing structure suitable for motor shaft end provided by an embodiment of the utility model.

[0019] The utility model provides a kind of sealing structure suitable for motor shaft end, sealing structure includes the first oil seal and second oil seal of pairing arrangement, first oil seal includes first oil seal framework 11 and first oil seal elastomer 12, and first oil seal elastomer 12 is provided with main lip 13 and vice lip 14, and the outside of main lip 13 is arranged around oil seal spring 15;Second oil seal includes second oil seal framework 21 and second oil seal elastomer 22, and second oil seal elastomer 22 is provided with front lip 23.

[0020] Specifically, second oil seal includes second oil seal framework and second oil seal elastomer, and front lip is provided on second oil seal elastomer;By adding front lip on second oil seal elastomer, so that front lip can block metal particles into, avoid main lip abrasion, improve the sealing property of the sealing structure.

[0021] Further, one end of second oil seal framework 21 is flat end, and front lip 23 is arranged at the lower half of the flat end of second oil seal framework 21.

[0022] Further, first oil seal and second oil seal are oppositely arranged, and first oil seal framework 11 is arranged around the outside of second oil seal 2.

[0023] Further, first oil seal elastomer 12 is fluorine glue and is coated on the first inner side of first oil seal framework 11, and first oil seal framework 11 is metal framework.

[0024] Further, second oil seal elastomer 22 is rubber and is coated on the inner side of second oil seal framework 21, and second oil seal framework 21 is exposed metal framework.

[0025] Optionally, front lip 23 is made of nano filler rubber.

[0026] Optionally, main lip 13 and vice lip 14 are made of fluorine glue.

[0027] In summary, the utility model provides a kind of sealing structure suitable for motor shaft end, the main technical idea of the sealing structure at least has the following advantages:

[0028] Sealing structure suitable for motor shaft end includes the first oil seal and second oil seal of pairing arrangement, first oil seal includes first oil seal framework and first oil seal elastomer, and first oil seal elastomer is provided with main lip and vice lip, and the outside of main lip is arranged around oil seal spring;Second oil seal includes second oil seal framework and second oil seal elastomer, and second oil seal elastomer is provided with front lip;By adding front lip on second oil seal elastomer, so that front lip can block metal particles into, avoid main lip abrasion, improve the sealing property of the sealing structure.

[0029] The above has carried out the detailed introduction to the utility model, the principle and implementation mode of the utility model have been set forth in the application of specific example in the utility model, the above embodiment is only for helping understanding the utility model and core thought. It should be pointed out that, for ordinary skilled person in the art, on the premise of not departing from the principle of the utility model, the utility model can also be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the utility model claims.

Claims

1. A seal structure for a shaft end of an electric machine, characterized by The sealing structure comprises a first oil seal and a second oil seal arranged in pairs, the first oil seal comprises a first oil seal framework and a first oil seal elastomer, the first oil seal elastomer is provided with a main lip and a secondary lip, and the outside of the main lip is surrounded by an oil seal spring; the second oil seal comprises a second oil seal framework and a second oil seal elastomer, and the second oil seal elastomer is provided with a front lip.

2. The seal structure for the shaft end of an electric machine according to claim 1, characterized in that, One end of the second oil seal framework is a flat end, and the front lip is arranged at the lower half of the flat end of the second oil seal framework.

3. The seal construction for a shaft end of an electric machine according to claim 1, characterized in that The first oil seal is arranged opposite to the second oil seal, and the outside of the second oil seal is surrounded by a first oil seal framework.

4. The seal construction for a shaft end of an electric machine according to claim 1, characterized in that The first oil seal elastomer is fluorine rubber and is coated on the first inner side of the first oil seal framework, and the first oil seal framework is a metal framework.

5. The seal construction for a shaft end of an electric machine according to claim 1, characterized in that The second oil seal elastomer is rubber and is coated on the inner side of the second oil seal framework, and the second oil seal framework is an exposed metal framework.

6. The seal construction for a shaft end of an electric machine according to claim 1, characterized in that The front lip is made of nano-filled rubber.

7. The seal construction for a shaft end of an electric machine according to claim 1, characterized in that The main lip and the secondary lip are made of fluorine rubber.

Images