Oil seal with rubber spring structure

Abstract

The utility model relates to an oil seal with a rubber spring structure, which comprises a framework, a polytetrafluoroethylene sheet fixed on one side of the framework, a stainless steel spring arranged between the polytetrafluoroethylene sheet and the framework, one end of the stainless steel spring connected with the framework, rubber arranged on one side of the framework, and the polytetrafluoroethylene sheet arranged at the bottom of the rubber. A part of memory contraction force is actively abandoned by improving and adding the stainless steel spring, and the stable journal sticking force is increased by the spring, so that the service life of the stable journal sticking of the PTFE lip is multiplied.

Description

Technical Field

[0001] The utility model relates to the field of stainless steel polytetrafluoroethylene oil seals, in particular to an oil seal with a rubber spring structure. Background Art

[0002] The traditional stainless steel PTFE oil seal is composed of an inner and outer frame, a PTFE sheet and a sealing gasket. The PTFE sheet is pulled into a bell mouth and the PTFE lip memory shrinks to hold the shaft.

[0003] The inventors have found that there are at least the following problems in the prior art that have not been solved:

[0004] PTFE sheets are easy to be shaped and lose their shaft holding force. Therefore, we propose an oil seal with a rubber spring structure. The improved stainless steel spring actively gives up a part of the memory contraction force, and the spring increases the stable shaft holding force, so that the PTFE lip can stably hold the shaft and increase the service life by several times. Utility Model Content

[0005] The utility model aims to overcome the deficiencies of the prior art, meet practical needs, and provide an oil seal with a rubber spring structure to solve the technical problem that the current polytetrafluoroethylene sheet is easy to lose its shaft holding force after being shaped.

[0006] In order to achieve the purpose of the utility model, the technical solution adopted by the utility model is: designing an oil seal with a rubber spring structure, including a skeleton, a polytetrafluoroethylene sheet is fixed to one side of the skeleton, and a stainless steel spring is installed between the polytetrafluoroethylene sheet and the skeleton.

[0007] Preferably, one end of the stainless steel spring is connected to a skeleton.

[0008] Preferably, rubber is installed on one side of the frame, and a polytetrafluoroethylene sheet is provided on the bottom of the rubber.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] 1. The utility model actively gives up a part of the memory contraction force by improving and adding a stainless steel spring, and the spring increases the stable shaft holding force, so that the PTFE lip can stably hold the shaft and increase the service life by several times. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a cross-sectional view of the utility model;

[0012] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model.

[0014] In the figure: 1. Skeleton; 2. PTFE sheet; 3. Stainless steel spring; 4. Rubber. DETAILED DESCRIPTION

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0016] Example 1: An oil seal with a rubber spring structure, see Figures 1 to 3 , including a skeleton 1, a polytetrafluoroethylene sheet 2 is fixed on one side of the skeleton 1, and a stainless steel spring 3 is installed between the polytetrafluoroethylene sheet 2 and the skeleton 1. By adding the stainless steel spring 3, a part of the memory contraction force is actively abandoned, and the spring increases the stable shaft holding force, so that the polytetrafluoroethylene lip can stably hold the shaft and increase the service life by multiples.

[0017] For details, see Figures 1 to 3 One end of the stainless steel spring 3 is connected to the frame 1.

[0018] For further information, see Figures 1 to 3 A rubber 4 is installed on one side of the frame 1, and a polytetrafluoroethylene sheet 2 is arranged at the bottom of the rubber 4.

[0019] When using an oil seal with a rubber spring structure, a part of the memory contraction force is actively abandoned by adding the stainless steel spring 3, and the spring increases the stable shaft holding force, so that the polytetrafluoroethylene lip can stably hold the shaft and increase the service life by multiples.

[0020] In addition, the components designed in the present invention are all universal standard parts or components known to technical personnel in the field. Their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods. They can be fully implemented by technical personnel in the field, and there is no need to elaborate. The content protected by the present invention does not involve improvements to internal structures and methods.

[0021] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. An oil seal with a rubber spring structure, comprising a frame (1), characterized in that: A polytetrafluoroethylene sheet (2) is fixed to one side of the frame (1), and a stainless steel spring (3) is installed between the polytetrafluoroethylene sheet (2) and the frame (1).

2. An oil seal with a rubber (4) spring structure as claimed in claim 1, characterized in that: One end of the stainless steel spring (3) is connected to the frame (1).

3. An oil seal with a rubber (4) spring structure as claimed in claim 1, characterized in that: A rubber (4) is installed on one side of the frame (1), and a polytetrafluoroethylene sheet (2) is arranged on the bottom of the rubber (4).

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