Bidirectional sealing ring

Abstract

The utility model discloses a bidirectional sealing ring which comprises a framework, a rubber body is connected to the framework, the section of the framework is rectangular, two sealing lips which are symmetrically arranged relative to the framework are arranged on the rubber body, an auxiliary notch is formed between the two sealing lips, and a polytetrafluoroethylene coating is arranged on the surface of each sealing lip.

Description

Technical Field

[0001] The utility model belongs to the technical field of sealing rings and relates to a bidirectional sealing ring. Background Art

[0002] Conventional wheel hub bearings have upper and lower inner rings that are directly pressed into contact with each other, ensuring flatness and airtight contact between the inner rings. However, when high loads act on the bearings, slight deformation may occur between the inner rings, creating gaps and leading to grease leakage. Therefore, it is necessary to design a bidirectional sealing ring to solve this problem. Utility Model Content

[0003] In order to solve the deficiencies of the prior art, the utility model provides a bidirectional sealing ring.

[0004] To achieve the above-mentioned purpose, the technical solution of the present invention is: a bidirectional sealing ring, including a skeleton, to which a rubber body is connected, characterized in that the cross-section of the skeleton is rectangular, the rubber body has two sealing lips arranged symmetrically relative to the skeleton, an auxiliary recess is formed between the two sealing lips, and the surface of the sealing lips has a polytetrafluoroethylene coating.

[0005] The sealing lips include an axial sealing lip and a radial sealing lip.

[0006] The auxiliary notch is an arc-shaped notch.

[0007] The thickness of the polytetrafluoroethylene coating is 0.06-0.12 mm.

[0008] The frame is also provided with a plurality of through holes, and the through holes are evenly arranged in a circumference.

[0009] By adopting the above technical solution, the beneficial effects of the utility model are:

[0010] The utility model designs a sealing ring with an axial sealing lip and a radial sealing lip, and a polytetrafluoroethylene coating is applied on the surface of the entire sealing lip. The sealing ring is installed between the upper inner ring and the lower inner ring to achieve a sealing effect and effectively prevent grease from leaking from the gap between the two inner rings. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural diagram of the present utility model.

[0012] In the figure, 1a, skeleton; 1a1, through hole; 1b, rubber body; 1c, sealing lip; 1c1, axial sealing lip; 1c2, radial sealing lip; 1d, polytetrafluoroethylene coating; 1f, auxiliary recess; 2a, upper inner ring; 2b, lower inner ring. DETAILED DESCRIPTION

[0013] In order to further explain the technical solution of the present invention, the present invention will be described in detail below through specific embodiments.

[0014] like Figure 1 As shown, the bidirectional sealing ring includes a skeleton 1a, to which a rubber body 1b is connected. The cross-section of the skeleton 1a is rectangular, and the rubber body 1b has two sealing lips 1c arranged symmetrically relative to the skeleton 1a. An auxiliary recess 1f is formed between the two sealing lips 1c. Specifically, the auxiliary recess 1f is an arc-shaped recess. The surface of the sealing lip 1c has a polytetrafluoroethylene coating 1d. Specifically, the thickness of the polytetrafluoroethylene coating 1d is 0.06-0.12 mm. In practice, the polytetrafluoroethylene coating 1d is processed using existing technology.

[0015] The sealing lip 1c includes an axial sealing lip 1c1 and a radial sealing lip 1c2. The axial sealing lip 1c1 and the radial sealing lip 1c2 are used for sealing between the upper inner ring 2a and the lower inner ring 2b.

[0016] The skeleton 1a also has a plurality of through holes 1a1, and the through holes 1a1 are evenly arranged around the circumference. With this structure, the rubber body 1b can be reliably connected to the skeleton 1a.

[0017] In summary, the present invention proposes a bidirectional sealing ring, which is installed between the upper inner ring 2a and the lower inner ring 2b to ensure sealing performance under slight deformation.

[0018] The above components are all common standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0019] The above embodiments and drawings do not limit the product form and style of the present invention. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present invention.

Claims

1. A bidirectional sealing ring, comprising a skeleton (1a), a rubber body (1b) connected to the skeleton (1a), characterized in that: The skeleton (1a) has a rectangular cross-section, and the rubber body (1b) has two sealing lips (1c) arranged symmetrically relative to the skeleton (1a), an auxiliary recess (1f) is formed between the two sealing lips (1c), and the surface of the sealing lips (1c) has a polytetrafluoroethylene coating (1d).

2. The bidirectional sealing ring according to claim 1, characterized in that: The sealing lip (1c) comprises an axial sealing lip (1c1) and a radial sealing lip (1c2).

3. The bidirectional sealing ring according to claim 1, characterized in that: The auxiliary notch (1f) is an arc-shaped notch.

4. The bidirectional sealing ring according to claim 1, characterized in that: The thickness of the polytetrafluoroethylene coating (1d) is 0.06-0.12 mm.

5. The bidirectional sealing ring according to claim 1, characterized in that: The skeleton (1a) also has a plurality of through holes (1a1), and the through holes (1a1) are evenly arranged around the circumference.

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