Universal joint

A universal joint and sealing body technology, applied in the field of universal joints, can solve the problems of high cost, easy wear of the outer sealing lip, expensive structure of the inner sealing device, etc., achieve waterproof and pollution optimization, reduce deviation, or prevent deviation Effect

Active Publication Date: 2016-04-06
AB SKF
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case the outer sealing lip is prone to wear
[0006] In particular, even in said patent document, the disclosed solutions have the disadvantage that a relatively expensive construction of the inner seal is required to ensure that contamination is prevented from entering the journal bearing arrangement.
The known construction with two separate sealing systems is therefore more expensive and correspondingly more expensive to produce and assemble.

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0033] figure 1 is a simplified diagram (two of the four main journals 3 are depicted) of a part of a universal joint 1 having a universal joint cross with four main journals 3 supported in respective journal bearing arrangements 4 2. The journal bearing arrangement 4 is accommodated in a bushing 5 or the bushing 5 is a component part of the journal bearing arrangement 4 . In the present exemplary embodiment the journal bearing arrangement 4 is designed as a needle bearing arrangement.

[0034] For sealing the journal bearing arrangement 4 , for each bushing 5 a sealing arrangement 6 is located on the universal joint spider 2 .

[0035] The sealing device 6 has a sealing body 7 designed in one piece; this sealing body 7 is seated on the joint spider 2 in a static sealing manner. in accordance with figure 1 In the structural example of , the sealing body 7 has a radially outwardly directed first sealing lip 8 which is connected to the bushing 5 or - more precisely - to th...

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PUM

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Abstract

A universal joint including a joint cross has a plurality of bearing journals supported in a trunnion bearing having a bearing bushing and a seal assembly including a one-piece seal body sealing the journal cross against the bearing bushing, the seal body having a first lip configured to form a dynamic seal on the bearing bushing or on a U-shaped sleeve connected to the bearing bushing, a second lip configured to form a dynamic seal on the bearing bushing or on the sleeve, a first arm of the sleeve being press-fit in a cylindrical receiving surface of the bearing bushing, or the sleeve having a section that is rounded or doubly corrugated in radial section, or wherein between the seal body and rolling elements of the trunnion bearing a separate ring part is disposed and pressed towards the rolling elements by at least one elastic element projecting from the seal body.

Description

technical field [0001] The invention relates to a universal joint with a universal joint cross, wherein the universal joint cross has a number of main journals, wherein each main journal is supported in a bushing by means of a journal bearing arrangement and is provided with a sealing device. For the sealing of the universal joint relative to the bushing, wherein the sealing device has a sealing body which is seated on the cross shaft of the universal joint in a static sealing manner, wherein the sealing body has at least a second radially outwardly or inwardly directed A sealing lip, the first sealing lip is in dynamic sealing contact with the bushing or with a sleeve connected to the bushing in a rotationally fixed manner, wherein the sealing body has at least one second radially inwardly directed seal The lip, which is in dynamic sealing contact with the bushing or sleeve, wherein the sealing body is designed together with all sealing lips as a one-piece polymer part and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D3/26F16D3/84
CPCF16D3/26F16D3/84F16D2300/08F16D3/385F16D3/41F16C33/7809
Inventor R·迪特马P·卡察罗斯V·文特
Owner AB SKF
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