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Operating device especially for friction clutch

A technique for operating devices, friction devices, applied in the field of operating devices especially for friction clutches

Active Publication Date: 2018-10-23
ZF FRIEDRICHSHAFEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A fundamental disadvantage of this design principle is that the wear compensation chamber must be permanently under operating pressure, since the displacement working chamber is functionally supported on the wear compensation chamber

Method used

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  • Operating device especially for friction clutch
  • Operating device especially for friction clutch
  • Operating device especially for friction clutch

Examples

Experimental program
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Effect test

Embodiment Construction

[0045] figure 1 The illustration is limited to an actuating device 1 for a friction clutch in a drive train. The specific structure of the friction clutch is not critical to the invention. For a friction clutch, an actuating lever 3 is shown symbolically, such as a reed like a diaphragm spring known per se.

[0046] The actuating device 1 comprises a working cylinder 5 in which a piston 7 is guided axially displaceably. The working cylinder 5 is secured in a positionally defined manner inside a clutch bell (not shown) via a preferably riveted support plate 9 . A bearing sleeve 11 on which the piston 7 slides is fastened coaxially with respect to the working cylinder 5 . The working cylinder 5 , the rear surface 13 of the piston 7 and the bearing sleeve 11 delimit a working chamber 15 which can optionally be filled with a gaseous or hydraulic pressure medium. Seals 17 , 19 prevent pressure medium from escaping at the inner and outer side surfaces of piston 7 . For the sake...

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PUM

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Abstract

The invention relates to an operating device comprising a working cylinder that can be filled with a pressure medium, in which the piston is slidably guided, wherein a compensating device acts in series with the working cylinder. The compensating device pushes a working area of the piston by its effective axial length, wherein the compensating device has a mechanical locking device for fixing itseffective length.

Description

technical field [0001] The invention relates to an actuation device, in particular for a friction clutch, according to the preamble of claim 1 . Background technique [0002] Document DE 102 53 020 A1 describes an actuating device for a friction clutch. Compressed air is used as the pressure medium for the actuation device. In addition to numerous advantages, however, compressibility must be considered for compressed air. In contrast to hydraulic pressure media, a delay occurs when activating the actuating device. Furthermore, attempts are made to optimize this delay by minimizing the volume of the working chamber. This results in a partially complex body contour in the cylinder of the piston displaceably mounted in the cylinder, via which piston actuates the friction clutch. [0003] Various measures are disclosed in DE 102 53 020 A1 in order to minimize the volume of the working chamber. [0004] A fundamental problem, however, is that the wear path of the clutch must...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D13/75F16D13/58F16D25/08
CPCF16D13/58F16D13/752F16D25/083F16D13/755F16D25/087F16D25/126F16D2300/18
Inventor F·厄布M·戴默M·多伊尔弗勒C·施莱彻B·图拉兹科H·沃伊特H·伯文德B·科埃斯特S·格拉西门科
Owner ZF FRIEDRICHSHAFEN AG
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