CN218894951U

CN218894951U - Combined oil seal convenient for improving tightness

Info

Publication number: CN218894951U
Application number: CN202222715954.3U
Authority: CN
Inventors: 程珊; 乔娇
Original assignee: Kunshan Mks Oil Seal Industrial Co ltd
Current assignee: Kunshan Mks Oil Seal Industrial Co ltd
Priority date: 2022-10-14
Filing date: 2022-10-14
Publication date: 2023-04-21
Anticipated expiration: 2032-10-14

Abstract

The utility model discloses a combined oil seal convenient for improving tightness, which comprises an outer oil seal assembly, an inner oil seal assembly and a supporting assembly, wherein the inner oil seal assembly is nested in the outer oil seal assembly, the supporting assembly is arranged in the inner oil seal assembly, the outer oil seal assembly consists of an outer framework and a first rubber coating layer, the inner oil seal assembly consists of an inner framework and a second rubber coating layer, the supporting assembly consists of a steel ring framework and a third rubber coating layer, and the steel ring framework is fixedly connected to one side of the inner framework. According to the utility model, the supporting component is arranged in the inner oil seal component, the supporting component consists of the steel ring framework and the third rubber coating layer, the sealing lip is fixedly connected to the surface of the third rubber coating layer, the steel ring framework can provide a certain supporting force for the rotating shaft, the swing amplitude of the rotating shaft is limited, and meanwhile, the sealing lip is tightly attached between the rotating shaft and the steel ring framework, so that the connection between the steel ring framework and the rotating shaft is tighter, and the sealing performance of the oil seal is improved.

Description

Combined oil seal convenient for improving tightness

Technical Field

The utility model relates to the technical field of oil seals, in particular to a combined oil seal convenient for improving tightness.

Background

Oil seals are a common convention designation for seals, simply referred to as lubrication seals. It is a mechanical element used to seal grease (oil is the most common liquid substance in transmission systems, also generally referred to as "liquid substance"), which isolates the components of the transmission components that require lubrication from the output components, and does not allow the lubrication to leak. The oil seal is generally divided into a monomer type and an assembled type, and the assembled type oil seal is characterized in that a framework and lip materials can be freely combined and is generally used for special oil seals.

When the existing combined oil seal is used, the swing amplitude of the rotating shaft is limited by the supporting structure, but a sealing structure is not arranged between the inner framework and the rotating shaft, the rotating shaft is only sealed by the original sealing lip, and the sealing performance of the oil seal cannot be greatly improved. For example, CN201820036600.7 discloses a combined oil seal, a through hole through which a rotating shaft passes is formed in a sealing tube of the patent, a plurality of sealing lips are provided on an inner wall of the through hole to seal the rotating shaft, meanwhile, a channel through which the rotating shaft passes is provided on an inner skeleton combined with an outer skeleton, and the inner skeleton can provide a certain supporting force for the rotating shaft, so that the rotating shaft is limited to rotate within the range of the channel, and the overall tightness of the oil seal is improved. Although the swing of the rotating shaft is limited through the inner framework, a sealing structure is not arranged between the inner framework and the rotating shaft, the rotating shaft is only sealed through the sealing lip on the outer framework, and the sealing performance of the oil seal cannot be greatly improved.

Therefore, it is necessary to invent a combination type oil seal which is convenient for improving the sealing property to solve the above problems.

Disclosure of Invention

The utility model aims to provide a combined oil seal convenient for improving the tightness, which aims to solve the problems that when the traditional combined oil seal is used in the prior art, the swing of a rotating shaft is limited by arranging a supporting structure, but a sealing structure is not arranged between an inner framework and the rotating shaft, the rotating shaft is only sealed by an original sealing lip, and the tightness of the oil seal cannot be greatly improved.

In order to achieve the above object, the present utility model provides the following technical solutions: the utility model provides a combination formula oil blanket convenient to improve leakproofness, includes outer oil blanket subassembly, interior oil blanket subassembly and supporting component, interior oil blanket subassembly nestification is inside outer oil blanket subassembly, supporting component sets up inside interior oil blanket subassembly, outer oil blanket subassembly comprises outer skeleton and first rubber coating layer, interior oil blanket subassembly comprises inner skeleton and second rubber coating layer, supporting component comprises steel ring skeleton and third rubber coating layer, steel ring skeleton fixed connection is in inner skeleton one side, third rubber coating layer fixed connection is in the inner circle surface of steel ring skeleton, third rubber coating layer fixed connection has seal lips, seal lips quantity is established to be a plurality of, a plurality of seal lips are sharp array and distribute.

Preferably, the first encapsulation layer is fixedly connected to the inner and outer ring surfaces of the outer skeleton.

The dustproof lip is fixedly connected to one side of the top of the first rubber coating layer, the inclination angle of the dustproof lip is upward, and dust and foreign matters can be prevented from entering the oil seal by the arrangement of the dustproof lip.

Preferably, the second coating layer is fixedly connected to the surfaces of the inner ring and the outer ring of the inner framework.

Preferably, the top of the steel ring framework is provided with an upper deflection lip, the bottom of the steel ring framework is provided with a lower deflection lip, and the supporting component is clamped between the upper deflection lip and the lower deflection lip, so that the sealing effect of the supporting component on the rotating shaft can be further improved.

Preferably, the upper flexing lip and the lower flexing lip are fixedly connected to the surface of the inner ring of the second adhesive coating layer, the inclination angle of the upper flexing lip is upward, and the inclination angle of the lower flexing lip is downward.

Preferably, a first mounting groove is formed in one side of the upper flexing lip, a first O-shaped spring is mounted in the first mounting groove, the upper flexing lip is pressed and tightly attached to the surface of the rotating shaft through the first O-shaped spring, and sealing performance of the oil seal is improved.

Preferably, a second mounting groove is formed in one side of the lower deflection lip, a second O-shaped spring is mounted in the second mounting groove, the lower deflection lip is pressed and tightly attached to the surface of the rotating shaft through the second O-shaped spring, and the sealing performance of the oil seal is improved.

In the technical scheme, the utility model has the technical effects and advantages that:

through set up supporting component inside including the oil blanket subassembly, supporting component comprises steel ring skeleton and third rubber coating layer, and third rubber coating layer surface fixedly connected with seal lip, and the steel ring skeleton can provide certain holding power for the pivot, restricts the swing of pivot, and seal lip hugs closely between pivot and steel ring skeleton simultaneously for be connected between steel ring skeleton and the pivot more closely, be favorable to improving the leakproofness of oil blanket.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is an exploded view of the structure of the present utility model;

FIG. 3 is a cross-sectional view of the structure of the present utility model;

fig. 4 is an enlarged view of the structure of the portion a in fig. 3 according to the present utility model.

Reference numerals illustrate:

1. an outer oil seal assembly; 2. an inner oil seal assembly; 3. a support assembly; 4. an outer skeleton; 5. a first glue coating layer; 6. an inner skeleton; 7. a second coating layer; 8. a steel ring framework; 9. a third glue coating layer; 10. a sealing lip; 11. a dust lip; 12. an upper flexing lip; 13. a lower deflection lip; 14. a first mounting groove; 15. a first O-shaped spring; 16. a second mounting groove; 17. a second O-spring.

Detailed Description

In order to make the technical scheme of the present utility model better understood by those skilled in the art, the present utility model will be further described in detail with reference to the accompanying drawings.

The utility model provides a combined oil seal convenient for improving tightness, which is shown in figures 1-4, and comprises an outer oil seal assembly 1, an inner oil seal assembly 2 and a supporting assembly 3, wherein the inner oil seal assembly 2 is nested in the outer oil seal assembly 1, the supporting assembly 3 is arranged in the inner oil seal assembly 2, the outer oil seal assembly 1 consists of an outer framework 4 and a first rubber coating layer 5, the inner oil seal assembly 2 consists of an inner framework 6 and a second rubber coating layer 7, the supporting assembly 3 consists of a steel ring framework 8 and a third rubber coating layer 9, the steel ring framework 8 is fixedly connected to one side of the inner framework 6, the third rubber coating layer 9 is fixedly connected to the inner ring surface of the steel ring framework 8, the surface of the third rubber coating layer 9 is fixedly connected with sealing lips 10, the number of the sealing lips 10 is a plurality, and the sealing lips 10 are distributed in a straight line array.

The first rubber coating layer 5 is fixedly connected to the surfaces of the inner ring and the outer ring of the outer framework 4.

The dustproof lip 11 is fixedly connected to one side of the top of the first rubber coating layer 5, and the inclination angle of the dustproof lip 11 is upward.

The second packing layer 7 is fixedly connected to the surfaces of the inner ring and the outer ring of the inner framework 6.

The top of the steel ring framework 8 is provided with an upper flexing lip 12, and the bottom of the steel ring framework 8 is provided with a lower flexing lip 13.

The upper flexing lip 12 and the lower flexing lip 13 are fixedly connected to the inner ring surface of the second adhesive coating 7, the inclination angle of the upper flexing lip 12 is upward, and the inclination angle of the lower flexing lip 13 is downward.

A first mounting groove 14 is formed in one side of the upper flexing lip 12, and a first O-shaped spring 15 is mounted in the first mounting groove 14.

A second mounting groove 16 is formed in one side of the lower deflection lip 13, and a second O-shaped spring 17 is mounted in the second mounting groove 16.

The working principle of the utility model is as follows:

referring to fig. 1-4 of the specification, when the utility model is used, firstly, an oil seal is arranged on a rotating shaft, the rotating shaft sequentially passes through a supporting component 3, an inner oil seal component 2 and an outer oil seal component 1, the supporting component 3 consists of a steel ring framework 8 and a third rubber coating layer 9, a sealing lip 10 is fixedly connected to the surface of the third rubber coating layer 9, the steel ring framework 8 provides a certain supporting force for the rotating shaft, the swing amplitude of the rotating shaft is limited, and meanwhile, the sealing lip 10 is tightly attached between the rotating shaft and the steel ring framework 8, so that the connection between the steel ring framework 8 and the rotating shaft is more compact, the sealing performance of the oil seal is improved, an upper flexing lip 12 and a lower flexing lip 13 are tightly attached to the surface of the rotating shaft under the extrusion of a first O-shaped spring 15 and a second O-shaped spring 17, and the upper flexing lip 12 and the lower flexing lip 13 are respectively arranged at the top and the bottom of the steel ring framework 8, and the sealing performance of the oil seal is further improved.

Claims

1. The utility model provides a combination formula oil blanket convenient to improve leakproofness, includes outer oil blanket subassembly (1), interior oil blanket subassembly (2) and supporting component (3), its characterized in that: the inner oil seal assembly (2) is nested inside the outer oil seal assembly (1), the supporting assembly (3) is arranged inside the inner oil seal assembly (2), the outer oil seal assembly (1) is composed of an outer framework (4) and a first rubber coating layer (5), the inner oil seal assembly (2) is composed of an inner framework (6) and a second rubber coating layer (7), the supporting assembly (3) is composed of a steel ring framework (8) and a third rubber coating layer (9), the steel ring framework (8) is fixedly connected to one side of the inner framework (6), the third rubber coating layer (9) is fixedly connected to the inner ring surface of the steel ring framework (8), sealing lips (10) are fixedly connected to the surface of the third rubber coating layer (9), and the number of the sealing lips (10) is multiple.

2. The combination oil seal for facilitating improved sealing as claimed in claim 1, wherein: the first rubber coating layer (5) is fixedly connected to the surfaces of the inner ring and the outer ring of the outer framework (4).

3. The combination oil seal for facilitating improved sealing as claimed in claim 1, wherein: the dustproof lip (11) is fixedly connected to one side of the top of the first rubber coating layer (5), and the inclination angle of the dustproof lip (11) is upward.

4. The combination oil seal for facilitating improved sealing as claimed in claim 1, wherein: the second packing layer (7) is fixedly connected to the surfaces of the inner ring and the outer ring of the inner framework (6).

5. The combination oil seal for facilitating improved sealing as claimed in claim 1, wherein: the top of the steel ring framework (8) is provided with an upper flexing lip (12), and the bottom of the steel ring framework (8) is provided with a lower flexing lip (13).

6. The combination oil seal for facilitating improved sealing as defined in claim 5, wherein: the upper bending lip (12) and the lower bending lip (13) are fixedly connected to the inner ring surface of the second adhesive coating layer (7), the inclination angle of the upper bending lip (12) is upward, and the inclination angle of the lower bending lip (13) is downward.

7. The combination oil seal for facilitating improved sealing as defined in claim 5, wherein: a first mounting groove (14) is formed in one side of the upper flexing lip (12), and a first O-shaped spring (15) is mounted in the first mounting groove (14).

8. The combination oil seal for facilitating improved sealing as defined in claim 5, wherein: a second mounting groove (16) is formed in one side of the lower bending lip (13), and a second O-shaped spring (17) is mounted in the second mounting groove (16).