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universal joint

A universal joint and axial technology, applied in the field of universal joints, can solve the problems of expensive structure of the separate sealing system, easy wear of the outer sealing lip, and high cost

Active Publication Date: 2021-05-04
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

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Embodiment Construction

[0033] figure 1 is a simplified diagram of a portion of a universal joint 1 (depicting two of the four main journals 3 ) having a universal joint cross with the 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 - ...

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Abstract

The invention relates to a universal joint with a universal joint cross, which has a number of main journals, each of which is supported in a bushing by means of a journal bearing arrangement and in order to hold the universal joint cross Relative to the seal of the shaft sleeve, a sealing device is provided. In order to achieve an effective yet economical sealing provision, the sealing device has a sealing body which is seated in a static sealing manner on the universal joint spider, the sealing body having at least one first sealing lip directed radially outwards or inwards, The first sealing lip is in dynamic sealing contact on the bushing or on a sleeve connected to the bushing in a rotationally fixed manner, the sealing body has at least one second radially inwardly directed sealing lip, the second The sealing lips are in dynamic sealing contact on the bushing or sleeve, the sealing body with all its sealing lips is designed as a one-piece polymer part and the seal has no further sealing body. Additionally, sleeves of different configurations may be used.

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 Patents(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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