CN216867493U

CN216867493U - Auxiliary lip structure of framework oil seal

Info

Publication number: CN216867493U
Application number: CN202220439294.8U
Authority: CN
Inventors: 曹启清; 丁聚民
Original assignee: Weifang Ekte Sealing Technology Co ltd
Current assignee: Weifang Ekte Sealing Technology Co ltd
Priority date: 2022-03-02
Filing date: 2022-03-02
Publication date: 2022-07-01
Anticipated expiration: 2032-03-02

Abstract

The utility model discloses a framework oil seal auxiliary lip structure, which belongs to the technical field of sealing equipment and comprises an oil seal body, wherein an auxiliary lip extending out of the oil seal body is arranged on the oil seal body, the auxiliary lip sequentially comprises a first section and a second section along the direction far away from the oil seal body, and the thickness of the first section is smaller than that of the second section; according to the utility model, by utilizing the thinner first section on the auxiliary lip, when the lip of the auxiliary lip is stressed, the auxiliary lip does not directly bear all acting force any more, but can buffer the stress in a bending mode, so that the probability of deformation of the auxiliary lip can be greatly reduced, the lip of the auxiliary lip can be ensured to be tightly attached to a component for a long time, the sealing effect of the framework oil seal is improved, and the service life of the framework oil seal can be prolonged.

Description

Auxiliary lip structure of framework oil seal

Technical Field

The utility model relates to the technical field of sealing equipment, in particular to a framework oil seal auxiliary lip structure.

Background

The oil seal is a mechanical element for sealing oil, and separates a part needing lubrication in a transmission part from a force-applying part, so that the leakage of the lubricating oil is avoided. A skeleton oil seal is a typical representative of oil seals. The framework plays a role in strengthening, so that the oil seal can keep the shape and the tension. The framework oil seal can be generally divided into a single-lip framework oil seal and a double-lip framework oil seal according to the structural form.

As shown in fig. 1, the two-lip skeleton oil seal has an auxiliary lip 2, and the lip of the auxiliary lip 2 is closely attached to the component to prevent external dust, impurities and the like from entering the component. In actual use, for closely laminating with the part, vice lip 2 is the form of stretching out usually, and the thickness of vice lip 2 often can remain unchanged or reduce gradually along the direction of keeping away from the oil blanket, but, this type of vice lip 2 can directly bear the effort of part when using, and after vice lip 2 atress is too big or uses for a long time, deformation takes place easily for the gap appears between vice lip 2's lip and the part, can't play dirt-proof effect again.

Therefore, the framework oil seal that the secondary lip is not easy to deform and the lip of the secondary lip can be tightly attached to a component for a long time is a problem to be solved urgently by framework oil seal production enterprises in the current stage.

SUMMERY OF THE UTILITY MODEL

For the problems in the prior art, the utility model provides a framework oil seal auxiliary lip structure, which utilizes a thinner first section on an auxiliary lip, when the lip of the auxiliary lip is stressed, the auxiliary lip does not directly bear the acting force, but can buffer the stress in a bending mode, so that the probability of deformation of the auxiliary lip can be greatly reduced, the lip of the auxiliary lip can be ensured to be tightly attached to a component for a long time, the sealing effect of the framework oil seal is improved, and the service life of the framework oil seal can be prolonged.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides a framework oil seal auxiliary lip structure which comprises an oil seal body, wherein an auxiliary lip extending out of the oil seal body is arranged on the oil seal body, the auxiliary lip sequentially comprises a first section and a second section along the direction far away from the oil seal body, and the thickness of the first section is smaller than that of the second section.

As a preferred technical scheme, the oil seal body comprises a framework and an oil seal body wrapped on the framework.

As a preferable technical scheme, a main lip extending out of the oil seal body is further arranged on the oil seal body.

As a preferred technical scheme, a self-tightening spring is arranged at the position, corresponding to the main lip, of the oil seal body.

As a preferable technical solution, the main lip is disposed opposite to the auxiliary lip, the main lip extends from one side of the oil seal body, and the auxiliary lip extends from the other side of the oil seal body.

As a preferable technical solution, the second segment has a lip, and a side surface of the second segment away from the lip is a convex surface.

As a preferable technical solution, a side surface of the first section, which is located on the same side as the convex surface, is provided with a first concave surface.

As a preferable technical solution, the side surface of the other side of the first segment is provided with a second concave surface.

As a preferred technical solution, the convex surface includes at least one section of curved surface.

As a preferred technical solution, the first concave surface and the second concave surface each include at least one section of curved surface.

The beneficial effects of the utility model are as follows:

according to the utility model, by utilizing the thinner first section on the auxiliary lip, when the lip of the auxiliary lip is stressed, the auxiliary lip does not directly bear all acting force any more, but can buffer the stress in a bending mode, so that the probability of deformation of the auxiliary lip can be greatly reduced, the lip of the auxiliary lip can be ensured to be tightly attached to a component for a long time, the sealing effect of the framework oil seal is improved, and the service life of the framework oil seal can be prolonged.

Drawings

FIG. 1 is a schematic structural diagram of a conventional double-lip framework oil seal;

fig. 2 is a schematic overall structure diagram of a framework oil seal auxiliary lip structure according to the utility model.

In the figure: 1-oil seal body, 11-framework, 12-oil seal body, 2-auxiliary lip, 21-first section, 211-first concave surface, 212-second concave surface, 22-second section, 221-lip, 222-convex surface, 3-main lip and 4-self-tightening spring.

Detailed Description

In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.

Referring to fig. 2, the utility model provides a framework oil seal auxiliary lip structure, which comprises an oil seal body 1, wherein an auxiliary lip 2 extending out of the oil seal body 1 is arranged on the oil seal body 1, the auxiliary lip 2 sequentially comprises a first section 21 and a second section 22 along the direction far away from the oil seal body 1, and the thickness of the first section 21 is smaller than that of the second section 22; when the framework oil seal is used, part of the surface of the second section 22 is tightly attached to a component, when the component moves, the second section 22 is stressed, the auxiliary lip 2 is bent at the first section 21, the auxiliary lip 2 is prevented from directly and completely bearing acting force, the auxiliary lip 2 can be effectively prevented from being deformed due to overlarge stress, the auxiliary lip 2 can be always tightly attached to the component, the sealing effect of the framework oil seal is ensured, and the service life of the framework oil seal is prolonged.

Please refer to fig. 2, the oil seal body 1 includes a framework 11 and an oil seal body 12 wrapped on the framework 11, the framework 11 and the oil seal body 12 form a main structure of the oil seal body 1, and the oil seal body 12 is usually made of rubber material and is fixed on the framework 11 by a heat treatment method.

Please refer to fig. 2, the main lip 3 extending from the oil seal body 1 is further disposed on the oil seal body 1, and the main lip 3 is also tightly attached to the component, so that the component to be lubricated is isolated from the output component, and leakage of the lubricating oil is avoided; furthermore, the oil seal body 1 is provided with a self-tightening spring 4 at a position corresponding to the main lip 3, and the self-tightening spring 4 can apply locking force to the main lip 3 to enable the main lip 3 to be tightly attached to a component.

In this embodiment, referring to fig. 2, the main lip 3 is disposed opposite to the auxiliary lip 2, the main lip 3 extends from one side of the oil seal body 1, the auxiliary lip 2 extends from the other side of the oil seal body 1, and the main lip 3 and the auxiliary lip 2 respectively achieve the oil seal and dust prevention effects.

In the present embodiment, referring to fig. 2, the second segment 22 has a lip 221, and the lip 221 is a joint surface between the sub-lip 2 and the component; the side of the second section 22 away from the lip 221 is provided with a convex surface 222, and the convex surface 222 can increase the thickness of the second section 22; further, the side surface of the first section 21 on the same side as the convex surface 222 is provided with a first concave surface 211, and preferably, the first concave surface 211 is connected with the convex surface 222, so as to further ensure that the minor lip 2 can be bent at the first section 21 when being stressed.

In this embodiment, referring to fig. 2, the second concave surface 212 is disposed on the other side of the first segment 21, so as to further reduce the thickness of the first segment 21, and ensure that the minor lip 2 can be bent at the first segment 21 when being stressed.

It should be noted that, referring to fig. 2, the convex surface 222 includes at least one section of curved surface, and preferably, the joint between the convex surface 222 and the first concave surface 211 should be a curved surface, which not only can make the minor lip 2 bend at the first section 21 when stressed, but also can ensure that the minor lip 2 can be rapidly reset when the external force disappears, thereby ensuring the fitting effect between the minor lip 2 and the component; similarly, the first concave surface 211 and the second concave surface 212 both include at least one section of curved surface, and the curved surface can make the bent minor lip 2 have a better tendency to recover to the original shape; preferably, the junction between the first concave surface 211 and the convex surface 222 is a curved surface so that the minor lip 2 can be rapidly restored to its original shape when no external force is applied.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a vice lip structure of skeleton oil blanket, its characterized in that, includes the oil blanket body, be equipped with on the oil blanket body and follow the vice lip that the oil blanket body stretches out, vice lip is along keeping away from include first section and second section in proper order in the direction of oil blanket body, the thickness of first section is less than the thickness of second section.

2. The framework oil seal auxiliary lip structure as claimed in claim 1, wherein the oil seal body comprises a framework and an oil seal body wrapped on the framework.

3. A framework oil seal auxiliary lip structure as claimed in claim 1 or 2, wherein a main lip extending from the oil seal body is further provided on the oil seal body.

4. The auxiliary lip structure for a framework oil seal as claimed in claim 3, wherein a self-tightening spring is arranged at the position of the oil seal body corresponding to the main lip.

5. A framework oil seal secondary lip structure as defined in claim 3, wherein said primary lip is disposed opposite said secondary lip, said primary lip extending from one side of said oil seal body and said secondary lip extending from the other side of said oil seal body.

6. The auxiliary lip structure for a framework oil seal as defined in claim 1, wherein the second segment has a lip, and the side of the second segment away from the lip is convex.

7. A framework oil seal secondary lip structure as defined in claim 6, wherein the side surface of the first section on the same side as the convex surface is provided with a first concave surface.

8. A framework oil seal secondary lip structure as defined in claim 7, wherein the side surface of the other side of said first section is provided with a second concave surface.

9. The framework oil seal secondary lip structure of claim 6, wherein said convex surface comprises at least one curved surface.

10. A framework oil seal secondary lip structure as defined in claim 8, wherein said first concave surface and said second concave surface each comprise at least one curved surface.