Special-shaped sealing assembly with multiple metal spring cavities

Abstract

The utility model relates to the technical field of bearing product production, in particular to a multi-cavity special-shaped sealing assembly with a metal spring, which comprises a sealing ring and a dustproof cover, the sealing ring adopts a five-lip structure, an external radial lip is arranged on the outer diameter end face, the inner diameter of the external radial lip is smaller than the outer diameter of the dustproof cover, and the outer diameter of the dustproof cover is larger than the outer diameter of the sealing ring. The outer radial lip covers a gap between the sealing ring and the outer diameter of the dustproof cover and is not in contact with the dustproof cover, a muddy water prevention lip is arranged on the sealing ring, and an auxiliary muddy water prevention lip lip is arranged above the muddy water prevention lip of the sealing ring. Most of dust and muddy water are blocked, the sealing performance is improved, abrasion to the sealing lip is improved, and the torque of the assembly is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing product production, and particularly relates to a special-shaped sealing component with a metal spring and multiple cavities. Background Art

[0002] The sealing component with a traditional structure is a combined structure of a sealing ring and a dust cover, and they move relative to each other. Therefore, there is a gap between the dust cover and the sealing ring, and dust and muddy water can enter the bearing interior through this gap, affecting the sealing performance, reducing the sealing performance, and causing early failure of the bearing.

[0003] The sealing ring lip and the dust cover of the traditional sealing structure are in interference fit. The sealing performance is improved by increasing the interference amount or the number of contact lip openings. However, during the use of the bearing, the frictional torque of the sealing lip is too large, which is prone to temperature rise, and the sealing ring lip will be worn and aged, affecting the sealing performance. Summary of the Invention

[0004] The purpose of the utility model is to provide a special-shaped sealing component with a metal spring and multiple cavities, so as to solve the problems such as bearing failure caused by sealing problems in the above technical background.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a special-shaped sealing component with a metal spring and multiple cavities, including a sealing ring and a dust cover. The sealing ring adopts a 5-lip structure, and an external radial lip is arranged at the outer diameter end face. Its inner diameter is smaller than the outer diameter of the dust cover. The external radial lip covers the gap between the outer diameters of the sealing ring and the dust cover and does not contact the dust cover. A muddy water prevention lip is arranged on the sealing ring, and a muddy water prevention lip auxiliary lip opening is arranged above the muddy water prevention lip on the sealing ring.

[0006] Further, the sealing ring is made of nitrile rubber material, and the dust cover is made of SUS304 material.

[0007] Further, a radial first lip and a radial second lip are arranged below the muddy water prevention lip on the sealing ring, and a metal spring is arranged on the radial first lip.

[0008] Further, the dust cover adopts a double-folded edge design, and its outer diameter folded edge is matched with the muddy water prevention lip auxiliary lip opening.

[0009] Further, grease is injected between the radial first lip and the radial second lip of the sealing ring and between the muddy water prevention lip and the radial first lip. Brief Description of the Drawings

[0010] Figure 1 It is the front view of a special-shaped sealing component with a metal spring and multiple cavities of the utility model;

[0011] Figure 2 View of the sealing ring of a special-shaped sealing component with a metal spring and multiple cavities according to the present utility model;

[0012] Figure 3 View of the dust cover of a special-shaped sealing component with a metal spring and multiple cavities according to the present utility model;

[0013] The reference signs are as follows:

[0014] Figure 1 In , 01 - sealing ring, 02 - dust cover, 03 - grease; Figure 2 In

[0014] , 01a - external radial lip, 01b - auxiliary lip for preventing mud and water, 01c - mud and water prevention lip, 01d - metal spring, 01e - first radial lip, 01f - second radial lip. Detailed implementation manners

[0015] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0016] Refer to Figures 1-3 , a special-shaped sealing component with a metal spring and multiple cavities, including a sealing ring 01 and a dust cover 02. The sealing ring 01 is provided with 5 sealing lips, and the dust cover 02 adopts a double-folded edge design.

[0017] An external radial lip 01a is provided at the outer diameter end face of the sealing ring 01. The inner diameter is slightly smaller than the outer diameter of the dust cover 02, covering the gap between the outer diameters of the sealing ring and the dust cover, improving the gap problem between the traditional sealing ring and the dust cover, and blocking most of the dust and mud and water.

[0018] A mud and water prevention lip 01c is provided on the sealing ring 01, and an auxiliary lip 01b for preventing mud and water is provided above the mud and water prevention lip 01c of the sealing ring 01, effectively blocking the mud and water and dust entering from the outer folded edge of the dust cover 02. The angle between the auxiliary lip 01b for preventing mud and water and the rotating shaft effectively prevents foreign matters from entering the mud and water prevention lip 01c, reducing the pressure on the mud and water prevention lip and improving the sealing performance. Moreover, the external radial lip 01a and the auxiliary lip 01b for preventing mud and water are non-contact with the dust cover 02, and will not have an adverse impact on the torque of the bearing and the sealing component.

[0019] The sealing ring 01 adopts a double-radial lip design, that is, a first radial lip 01e and a second radial lip 01f are provided below the mud and water prevention lip 01c. A metal spring 01d is provided on the first radial lip 01e, which can realize continuous provision of effective interference amount in case of wear of the sealing ring, ensuring the sealing performance.

[0020] The dust cover 02 is made of SUS304 material, with better surface roughness, rigidity and corrosion resistance. The better surface roughness can improve the wear of the sealing lip and reduce the torque of the component itself.

[0021] Before the combination of the sealing ring 01 and the dust cover 02, grease 03 is injected between the first radial lip 01e and the second radial lip 01f of the sealing ring 01, and between the mud-proof lip 01c and the first radial lip 01e, which plays the role of lubricating the lip of the sealing ring and the dust cover and discharging the internal air, so as to avoid the internal air forming an internal air pressure during combination and changing the contact situation between the lip and the dust cover, which will affect the sealing performance.

[0022] The above are only specific embodiments of the present invention, but the structural features of the present invention are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present invention are covered by the patent scope of the present invention.

Claims

1. A special-shaped sealing component with a metal spring and multiple chambers, characterized in that: The invention comprises a sealing ring (01) and a dust cover (02). The sealing ring (01) adopts a five-lip structure, and an external radial lip (01a) is arranged at the outer diameter end face thereof, and the inner diameter thereof is smaller than the outer diameter of the dust cover (02), covers the gap between the outer diameters of the sealing ring (01) and the dust cover (02), and does not contact the dust cover (02). The sealing ring (01) is provided with a mud and water lip (01c), and the sealing ring (01) is provided with an auxiliary mud and water lip lip (01b) above the mud and water lip (01c).

2. A special-shaped sealing assembly with a metal spring and multiple chambers according to claim 1, characterized in that: The sealing ring (01) is made of nitrile rubber, and the dust cover (02) is made of SUS304.

3. The special-shaped sealing assembly with a metal spring and multiple chambers according to claim 2, characterized in that: The sealing ring (01) is provided with a radial first lip (01e) and a radial second lip (01f) below the mud and water prevention lip (01c), and a metal spring (01d) is provided on the radial first lip (01e).

4. The special-shaped sealing assembly with a metal spring and multiple chambers according to claim 3, characterized in that: The dust cover (02) adopts a double folding edge design, and its outer diameter folding edge cooperates with the auxiliary lip (01b) of the anti-mud and water lip.

5. The special-shaped sealing assembly with a metal spring and multiple chambers according to claim 4, characterized in that: Lubricating grease (03) is injected between the radial first lip (01e) and the radial second lip (01f) of the sealing ring (01) and between the mud and water prevention lip (01c) and the radial first lip (01e).

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