FR2517401A1 - DEVICE FOR MEASURING WEAR OF CLUTCH TRIMS - Google Patents

Abstract

THE INVENTION RELATES TO A DEVICE FOR MEASURING THE WEAR OF CLUTCH LININGS. THE DEVICE INCLUDES A PIN 7, WHICH IS APPLIED AGAINST A PISTON PLACED IN A RECEIVER CYLINDER 5 AND ACTIVATING THE RELEASE FORK 1 THROUGH A PUSHBUTTON 3 THE SAID PIN 7 EXIT FROM THE RECEIVER CYLINDER AND BEING PUSHED OUT OF THE RECEIVER CYLINDER. CI WHEN THE CLUTCH LINING WEAR. USING A BUSH 8 MOUNTED ON THE EXTENDING END OF PIN 7, IT IS POSSIBLE TO SET AN INITIAL POSITION AFTER A FIRST ASSEMBLY OR AFTER REPLACEMENT OF THE CLUTCH LINING. IN THE EVENT OF WEAR, THE RING 8 ASSOCIATED WITH THE PIN 7 OCCUPIES A POSITION DIFFERENT FROM THE POSITION THUS FIXED; THE SPACING 10 BETWEEN THE TWO POSITIONS OF THE RING 8 CAN BE MEASURED FROM THE EXTERIOR.

Description

The present invention relates to a device for measuring the wear of

  motor vehicle clutch packings, in which the range of

  disengagement is activated by means of a push

  evening, by a piston arranged in a receiver cylinder

  and on which a fluid acts according to the action-

the clutch pedal.

  In the German patent application P 30 44 746 there is described a device for measuring the wear of clutch linings, in which the existing position relative to the clutch housing, a function of the wear of the lining. , a conical sleeve disposed on the pusher can be sensed by a measuring jig that can be inserted into a slot between

  said sleeve and the receiving cylinder.

  the conical sleeve is slidably disposed on the pusher and adjustment of the sleeve with respect to the pusher is effected automatically during

  first actuation of the clutch pedal.

  Because with this device it can not be controlled without disassembly of the receiver cylinder if the

  sliding conical sleeve actually occupies its posi-

  initial installation after the clutch has been fitted or

  after a replacement of the clutch lining, the

  The purpose of this invention is to provide a device that can be controlled from the outside and with the help of which

  directly measure clutch lining wear.

  The problem is solved according to the invention

  in that it is centrally provided in the cylinder

  a pin movable by translation, protruding towards the rear of the receiving cylinder and being able to apply

  against the piston, on which is disposed, at the

  a stick which can be moved in opposition to friction and occupies, after assembly of the clutch or after replacement of the clutch lining, when the pin is applied against the piston and after it has been moved

  with the pin by the piston in correspondence with the

  of the coupling liner, a position whose spacing relative to the slave cylinder is measurable. Thanks to the invention, a wear is obtained

  of the clutch lining can be measured directly

  and that, by a slight pressure on the bro-

  beyond the receiving cylinder, one can immediately

  check if the spindle is applied against the pis-

tone of the receiving cylinder.

  In the drawing, the device is shown

  measuring the wear of the clutch cover according to the in-

  vention. The clutch release fork 1 of a motor vehicle is actuated by a piston 2 via a pusher 3 The piston 2 is guided in a receiver cylinder 5 fixed by flange on the casing wall 4 and in which a pressurized fluid is introduced according to the actuation of the clutch pedal A pressure spring 6 placed in the receiving cylinder 5 ensures the application of the pusher 3 against the release fork 1 In the cylinder

  receiver 5, centrally, is mounted in a sliding

  a pin 7 protruding towards the rear of the cylinder

  dre receiver On the protruding end of pin 7 is mounted a ring S which can slide by means of

  friction with the spindle.

  After the initial assembly of the clutch or

2 5 1 7 4 0 1

  after replacement of the clutch lining 2 the clutch release fork 1 and therefore the pusher 3 and the piston 2 occupy a determined position This position is established using the pin 7 and the ring 8 because the pin 7 is applied against the piston 2 and the ring 8 moved on the pin 7 to

against the receiver cylinder 5.

  In the event of wear of the trim

  clutch fork 1 pivots in the direction of the arrow 9 so that, through the pusher 3 and the piston 2, the pin 7 slides towards

  the outside of the receiving roll 5 With the aid of

  7, the ring 8 is spaced apart from the receiving cylinder 5 and it takes for example the position indicated in broken lines The direct wear of the clutch lining is then determined by measuring the distance 10

  spacing of the ring 8 relative to the cylinder

  5 taking into account the transmission ratio

  between the pressure plate of the clutch and the furnace

declutching strike,

Claims (1)

CLAIM   Device for measuring the wear of packing   clutches of motor vehicles, in the-   which the release fork is actuated, by means of a pusher, by a piston disposed in a receiving cylinder and on which a fluid acts as a function of the actuation of the clutch pedal, characterized in that is planned centrally in the   cylinder (5) a movable spindle (7) by trans-   passing beyond the rear of the receiving roll and being able to bear against the piston (2), on which is disposed at the projecting end a ring (8) which can be moved in opposition to friction and which occupies, after the clutch has been fitted or after the clutch lining has been replaced, when the pin is applied against the piston and after it has been   moved with the spindle by the corresponding piston   with the wear of the coupling lining, a position whose spacing (10) with respect to the cylinder receiver is measurable.