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Sealing device for suspension of bicycle or motorcycle

A technology for sealing devices and forks, which is applied to axle suspension devices, bicycle accessories, engine seals, etc., to achieve the effect of reducing friction

Pending Publication Date: 2022-05-13
AB SKF
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

High friction is an issue in general, but friction peaks are more of an issue

Method used

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  • Sealing device for suspension of bicycle or motorcycle
  • Sealing device for suspension of bicycle or motorcycle
  • Sealing device for suspension of bicycle or motorcycle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] The invention is described below, by way of non-limiting example only, with reference to a sealing arrangement for a sleeve in a bicycle shock-absorbing fork. As mentioned above, the sealing device of the present invention is also applicable to motorcycle suspensions. see figure 2 and 3 , the sealing device 20 comprises:

[0022] - partition 21, made of metal material, preferably L-shaped;

[0023] - an elastomeric attachment layer 22 .

[0024] The elastomeric adhesion layer 22 has a radially outer portion 23 forming a static seal on the barrel wall 24 of the sleeve. The elastomeric attachment layer 22 also has a first lip 25 and a second lip 26 forming a dynamic seal radially inside. That is, the first lip and the second lip come into sliding contact with a moving part of the sleeve (for example, a piston rod of a shock absorber) at positions approaching the inner side and the outer side of the sleeve, respectively.

[0025] The radially inner dynamic seal is f...

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PUM

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Abstract

A sealing device (20) for a shock-absorbing fork sleeve is provided with a diaphragm (21) made of a metallic material and an elastomeric adhesive layer (22). The elastomeric adhesive layer (22) comprises, in order, a radially peripheral portion (23) forming a static seal with the sleeve wall (24) of the sleeve and at least one radially inner lip (25, 26) in sliding contact with the moving part of the sleeve. The additional lip (29) forms a seal with the surface (24a) of the cylinder wall (24), thereby closing the cavity (V) of the elastomer adhesive layer (22).

Description

technical field [0001] The present invention relates to a sealing device for bicycle or motorcycle suspensions. The sealing device is particularly suitable for use in a suspension-containing fork of a bicycle or motorcycle (hereinafter also referred to as a "shock fork"). Background technique [0002] The suspension of a bicycle or motorcycle usually has the function of cushioning road imperfections and ensuring that the wheels maintain as continuous contact with the ground as possible. The suspension comprises elastic load-bearing members such as air springs or coil springs and a hydraulic system or shock absorber capable of damping vibrations caused by sudden changes in the position of the wheels in the suspension. [0003] In a bicycle, the fork is the front part of the frame that houses the front wheel. Its name comes from the shape of the part: formed by a tube fixed to the frame and two arms that rest on the hub of the front wheel, which is the center of the wheel. ...

Claims

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Application Information

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IPC IPC(8): F16F9/36F16J15/3208F16J15/3232F16J15/3252F16J15/3268F16J15/3284
CPCF16F9/362F16J15/3232F16J15/3252F16J15/3268F16J15/3208F16J15/3284F16J15/56F16J15/3276B62K25/06
Inventor 马尔科·布雷索安德里亚·塞拉菲尼
Owner AB SKF