DE2352183A1 - Mechanical operating linkage for main vehicle clutch - has grip roller free-wheel for providing automatic adjustment in linkage - Google Patents

Abstract

A return spring is provided for the first linkage part between the clutch and the grip roller free wheel and for the second linkage part between the free wheel and the operating pedal. The cage for the clamping rollers is held by spring force in the free-wheel position and is transferred automatically into the locking position after a relatively short distance of travel of the operating pedal. The grip roller free wheel is positioned on the swivel axis of the pedal and has its smooth outer ring connected by the linkage to the clutch. The free wheel inner ring is rigidly coupled to the pedal. A lateral tongue on the inner ring is acted upon by a stressing spring on whose other end interacts another tongue on the cage.

Description

Daimler-Benz Aktiengesellschaft Paint 9828A

Stuttgart _12β

Mechanical operating linkage for main motor vehicle clutches

The invention relates to a mechanical actuation linkage for motor vehicle main clutches, the clutch is connected via a linkage to the operating pedal and this linkage is an adjusting member contains and has a return suspension.

In the case of the mechanical clutch actuation mentioned above, a simple automatic readjustment of the Linkage is desirable, and in recent years it has been used in conjunction with hydraulic clutch actuation generally introduced. Such an automatic adjustment is all the more desirable than then also for mechanical actuations basically the same follower release bearings can be used as they are also common for hydraulic actuation.

The invention solves this problem in the above-mentioned arrangements in that a controllable freewheel member is arranged for an automatic readjustment in the linkage and depending on the path of the actuating pedals from its freewheel position into its locked position

509818/0064

Daim 9828/4

is movable. It is therefore arranged according to the invention linkage in a freewheel, which locks in the operating direction and the dae in the wear direction of linkage releases. This release must be automatically canceled after a short distance of the operating pedal. In principle, it does not matter at which point of the entire operating linkage this freewheel is arranged. Primarily, however, the assignment to the clutch pedal itself or to the clutch release lever will probably come into question.

With the invention it is further proposed that the first rod part between the coupling and the Freewheel member and the second linkage part between the freewheel member and the operating pedal one each special return spring is assigned. These springs serve to keep the respective linkage closed and it is assumed that a continuously rotating clutch release bearing is used w ^ rd.

The invention prefers a solution, according to which a clamping roller freewheel is provided as the freewheel member, whose cage holding the pinch rollers is held in the free-running position by spring force and out of this after a relatively short travel of the operating pedal inevitably and automatically transferable into the locking position is. This means that in the non-actuated position the freewheel is the connection between the actuating pedal

509818/0064

Daim 9828M

■ and clutch releases so that the linkage is on can adjust any occurring wear easily. This release is then activated when the Clutch pedal inevitably lifted after a very short way, so that the freewheel in his Locked position passes and the linkage is closed in the actuating direction.

In one embodiment according to the invention is on the pivot axis of the operating pedal arranged a roller freewheel, its smooth outer ring is connected to the linkage for coupling and its forming or receiving the Klenunflachen Inner ring is rotatably connected to the operating pedal. It is also proposed that the inner ring at the same time has stop surfaces for the release position of the pinch rollers and that the pinch rollers receiving cage is resiliently biased against this inner ring so that all pinch rollers on the stop surfaces abut and that a further resilient stop is provided, which this cage back into the Lock position brings.

For this purpose, the invention provides that a preferably lateral tab is located on the inner ring, on which a bias spring engages, which on the other hand cooperates with a corresponding second tab on the cage.

-U-509818/0064

Daim 9828 / H

The arrangement can rait a train as well as with a compression spring. The above-mentioned further stop is according to the invention formed by the first end of a spring, which by means of a fixed abutment in a small Is kept at a distance from the second tab on the cage, the second end of this spring on a stationary Point is attached. This last-mentioned spring can expediently be wound around the axis of the clutch release pedal. In this case, means can be provided which make both the distance between the first spring end and the second tab on the cage and the preload of one or both springs adjustable.

Details of the invention shows the embodiment of the drawing and that shows

Figure 1 shows the schematic structure of the entire clutch actuation,

FIG. 2 shows the schematic structure of the controllable freewheel provided for this purpose and

FIG. 3 shows a guide shape of such a freewheel in side view (schematic).

According to Figure 1, the main clutch 10 of a motor vehicle from the clutch pedal 11 via a mechanical

509818/0064 - 5 -

Daim 9828/4

Actuated linkage in which a freewheel member 12 is arranged. This freewheel element - which will be explained in more detail later - is assigned to the clutch pedal 11. It should be designed so that it is in the. Actuating _{direction locks s} while it runs against this actuating direction d, ho so in the direction of the occurring wear ο The actuating direction is indicated by the arrows Ä and the direction of wear by the arrows ¥ «The rod part 13 between the clutch 10 and the freewheel member 12 is a special one Return spring IH assigned _s which ensures that this linkage part always remains closed. Another return spring IS is located on the clutch pedal 11 »

As already mentioned, the freewheel member 12 ensures automatic sewing in the linkage when wear occurs. The linkage part 13 cooperates with the smooth outer ring 16 zusaamen _s during DA® clutch pedal 11 with the inner ring 17 rotatably connected ists which the SperrflSehen 18 has "The cage 19 is constantly pulled by a spring 20 from the blocking position into the LSsestellumg" igtest In unbetät Clutch pedal 11 can therefore see the outer ring 16 move relative to the freewheel member 12 ₈ d ° ho. the linkage 13 is readjusted © mtspreehend the occurring wear and tear ο B © i d®w actuation of the clutch pedal 11 Laufsra nvm after a relatively short path the

S09818 / 0084

Daim 9 82 8/1

Clamping body 21 on the blocking surfaces 18, d. H. the Freewheel goes into its locked position and the clutch can now be operated via the closed linkage will.

To. Figure 3 is directly on the axis 22 of the release pedal 11, the freewheel member 12 is arranged and designed as a clamping roller freewheel. On the inner ring 17 - which is non-rotatably connected to the clutch pedal are also located next to the locking surfaces 18 Stop surfaces 23 for the release position of the freewheel. On the cage 19 and on the inner ring 17 there is one side each Tabs 24 and 25 are provided, between which a compression spring 26 is located. This compression spring now moves the Cage 19 in Ausrückriehtung so far out of the locked position out until all pinch rollers 21 hit the stop surfaces issue. The outer ring 16 can therefore move in this position in the direction of wear V unhindered. Around the axis 22 of the clutch pedal 11 is a coil spring 27 wound, the first end 2 8 by a stationary stop 29 is held so that it faces the stop 24 aa cage 19 at a very small distance. The second end 30 of the spring 27 is supported another stationary stop 31. The spring force of this spring 27 is greater than that of the spring 26.

When pressing the KiiggMrsgspedales 11 now moves first of all the inside is 17 including the cage 19 in disengagement direction A without the outer ring 16 being entrained will. But as soon as the flap 24 on the first

Β0981β / 0Ό§4 "

Baim 9823/4

At the end of 28 of the spring 27 hits, the biasing force of the spring 26 is overcome upon further actuation, ie the cage 19 remains behind the inner ring 17, which continues to move, and the pinch rollers 21 move into their blocking position. From this point on, the freewheel 12 is then in its blocking position, that is, the outer ring 16 is carried along in a force-locking manner in the usual manner.

50981870064

Claims (1)

Daimler-Benz Aktiengesellschaft Daim 9 82 8/1 Stuttgart October 12, 1973 Expectations 1. / Mechanical actuation linkage for main motor vehicle clutches, wherein the clutch is connected to the operating pedal via a linkage and this linkage containing an adjusting member and having a return suspension, characterized in that that a controllable freewheel member is arranged for an automatic adjustment in the linkage and depending on the travel of the operating pedal from its free-running position to its locked position is movable. 2. Clutch actuator according to claim 1, characterized in that the first rod part (13) between the clutch (10) and the freewheel member (12) and the second rod part between the freewheel member (12) and actuating pedal (11) each have a special return spring (IM ·, 15) is assigned. 3. Clutch actuator according to claim i or 2, characterized in that a clamping roller freewheel as the freewheel member (12) is provided, the cage (19) receiving the pinch rollers (21) by spring force in Freewheel position held and from this after a relatively short travel of the actuating pedal (11) inevitably and automatically in the locked position is transferable. 509818/0064 Daim 982 * ». Clutch actuation according to claim 3 _S, characterized in that a clamping roller freewheel (12) is arranged on the pivot axis (22) of the actuation pedal (11), the smooth outer ring (16) of which is connected to the linkage (13) for the coupling (10) and its the inner ring (17) forming or receiving the clamping surfaces (18) is connected to the actuating pedal (11) in a rotationally fixed manner. 5. Clutch actuator according to claim ^ _3, characterized in that the inner ring (17) immediately has stop surfaces (23) for the release position of the clamping rollers (21) and that the cage (19) receiving the clamping rollers (21). 17) is resiliently biased so that all pinch rollers (21) rest on the stop surfaces (2 3) and that a further resilient stop is provided which brings the cage (19) back into the blocking position. 6. Clutch actuator according to claim 5, characterized in that ■ that on the inner ring (17) there is a preferably lateral ¹ tab (25) ₉ on which a biasing spring C2S) engages, which on the other hand with a corresponding second tab (2Ό on the cage (19)) works together. 7 = Kuppiuisggbetätigyng mash Amspraeh S © d © ^ S _s thereby geksnzeiefeiaet _a d &S> as far ⁸ ®? Stop the first Eade C28) of a ¹ Fedes »C275 diesrt, 0981870084 Daim 9828/4 which by means of a fixed abutment (29) at a small distance from the second tab (2U) on Cage (19) is held, and that the second end (30) of this spring at a fixed point (31) is attached or supported. . 509818/0064 Blank page