Oil seal with reinforced auxiliary lip

Abstract

The oil seal comprises an oil seal body, the oil seal body comprises a main lip, a body inner side and a body outer side, during installation, the body inner side is located on the inner side of a machine body and makes contact with grease, and the body outer side is located on the outer side of the machine body and does not make contact with the grease; a reinforcing auxiliary lip is arranged on the inner side of the oil seal body, the outer diameter of the lip portion of the reinforcing auxiliary lip is the same as that of the main lip, and the reinforcing auxiliary lip and the oil seal body are of an integrated structure. According to the oil seal with the reinforced auxiliary lip, the reinforced auxiliary lip is additionally arranged on the inner side (grease side) of the oil seal on the basis of the old specification, the erosion efficiency of grease on the main lip of the oil seal is reduced in the running state of an RV reducer, and it is guaranteed that the oil seal has the longer service life so that the utilization rate of the oil seal can be increased.

Description

Technical Field

[0001] This utility model belongs to the field of speed reducer sealing, specifically relating to an oil seal with a reinforced auxiliary lip used in RV speed reducers. Background Technology

[0002] The existing specification of grease is on the grease side (inner side) of the oil seal. The grease has a long-term soaking and corrosive effect on the main lip of the oil seal, resulting in unsatisfactory sealing performance of the oil seal during the operation of the RV reducer. Utility Model Content

[0003] To address the aforementioned defects and shortcomings, this utility model provides an oil seal with a reinforced auxiliary lip.

[0004] The technical solution is as follows: an oil seal with a reinforced auxiliary lip, comprising an oil seal body, the oil seal body comprising a main lip, an inner side of the body and an outer side of the body, wherein during installation, the inner side of the body is located on the inner side of the machine body and is in contact with grease, and the outer side of the body is located on the outer side of the machine body and is not in contact with grease;

[0005] A reinforcing auxiliary lip is provided on the inner side of the main body. The outer diameter of the lip of the reinforcing auxiliary lip is the same as the outer diameter of the main lip. The reinforcing auxiliary lip and the oil seal body are an integral structure.

[0006] Furthermore, a first built-in skeleton is provided inside the oil seal body.

[0007] Furthermore, a second built-in skeleton is provided inside the reinforced auxiliary lip.

[0008] Furthermore, a spring is provided inside the main lip to increase its elasticity and make it contact the body more closely.

[0009] The oil seal for strengthening the auxiliary lip provided by this utility model has the following beneficial effects:

[0010] To ensure a superior sealing effect, an additional reinforced auxiliary lip is added to the inner side (grease side) of the oil seal, based on the old specifications. This reduces the erosion efficiency of grease on the main lip of the oil seal during RV reducer operation, ensuring a longer service life and increasing the utilization rate of the oil seal. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1This is a half-sectional schematic diagram of an oil seal with a reinforced auxiliary lip provided in this embodiment;

[0013] Figure 2 This is a schematic diagram of the assembly structure of an oil seal with a reinforced auxiliary lip and the machine body.

[0014] Reference numerals: 1-Oil seal body, 1.1-Main lip, 1.2-Inner side of body, 1.3-Outer side of body, 1.4-First internal skeleton, 1.5-Spring, 2-Reinforcing auxiliary lip, 2.1-Lip, 2.2-Second internal skeleton. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the following description will be provided in conjunction with the appendix. Figures 1 to 2 The embodiments of this utility model will be described in further detail.

[0016] This utility model provides an oil seal with a reinforced auxiliary lip, including an oil seal body 1. The oil seal body 1 includes a main lip 1.1, an inner side 1.2 of the body and an outer side 1.3 of the body. During installation, the inner side 1.2 of the body is located on the inner side of the machine body and is in contact with grease, while the outer side 1.3 of the body is located on the outer side of the machine body and is not in contact with grease.

[0017] A reinforcing auxiliary lip 2 is provided on the inner side 1.2 of the main body. The outer diameter of the lip 2.1 of the reinforcing auxiliary lip 2 is the same as the outer diameter of the main lip 1.1. The reinforcing auxiliary lip 2 and the oil seal body 1 are an integral structure with equivalent strength.

[0018] A first built-in skeleton 1.4 is provided inside the oil seal body 1.

[0019] A second built-in skeleton 2.2 is provided inside the reinforced auxiliary lip 2.

[0020] A spring 1.5 is also provided inside the main lip 1.1 to increase the elasticity of the main lip 1.1 and make it contact the body more closely.

[0021] During the assembly of the RV reducer, the side with the reinforced auxiliary lip 2 is installed into the machine body, so that its lip 2.1 comes into contact with the grease. When the RV reducer is running, the grease is reduced to have less contact with the main lip 1.1, thereby reducing corrosion of the main lip 1.1 and increasing the service life of the oil seal.

[0022] The action of spring 1.5 makes the main lip 1.1 contact the body more tightly, enhancing the sealing performance.

[0023] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An oil seal with a reinforced auxiliary lip, comprising an oil seal body (1), wherein the oil seal body (1) comprises a main lip (1.1), an inner side of the body (1.2) and an outer side of the body (1.3), wherein during installation, the inner side of the body (1.2) is located inside the machine body and in contact with grease, and the outer side of the body (1.3) is located outside the machine body and does not contact grease; Its features are, A reinforcing auxiliary lip (2) is provided on the inner side (1.2) of the main body. The outer diameter of the lip (2.1) of the reinforcing auxiliary lip (2) is the same as the outer diameter of the main lip (1.1). The reinforcing auxiliary lip (2) and the oil seal body (1) are an integral structure.

2. The oil seal with a reinforced auxiliary lip according to claim 1, characterized in that: A first built-in skeleton (1.4) is provided inside the oil seal body (1).

3. The oil seal of the reinforced auxiliary lip according to claim 2, characterized in that: A second built-in skeleton (2.2) is provided inside the reinforced auxiliary lip (2).

4. The oil seal for the reinforced auxiliary lip according to any one of claims 1-3, characterized in that: A spring (1.5) is also provided inside the main lip (1.1) to increase the elasticity of the main lip (1.1) and make it more closely contact the body.

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