192 clutches and power-stop control – Clutches – Operators
Patent
1989-03-02
1990-11-13
Bonck, Rodney H.
192 clutches and power-stop control
Clutches
Operators
192110B, 192113R, F16D 1374, F16D 2314
Patent
active
049695479
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to an arrangement for centering the angular position of a bearing unit for a declutching bearing.
So-called pull-type clutches on the drive units of motor vehicles have advantages with regard to function, service life and manufacturing costs when compared with so-called push-type clutches. The latter, however, have the advantage that they can be fitted simply when engine and gearbox are brought together, since the declutching mechanism only has to press on the declutching bearing.
With a pull-type clutch, on the other hand, a coupling is required between the declutching bearing and the declutching mechanism. Since it is difficult, when engine and gearbox are brought together, to reach the declutching bearing and the declutching mechanism from the outside, it is desirable that the coupling as well as the uncoupling of these takes place substantially automatically.
In the event that the declutching mechanism includes a declutching fork, its legs must then be moved, while engine and gearbox are brought together, into a position behind the lugs or the like which are generally found formed on the declutching bearing for interaction with the legs.
A solution for achieving this is previously known from Swedish patent application No. 8501248-2. In this wire spring arranged on the declutching bearing is used to interact with the legs of the declutching fork. With the rotatable declutching bearing and with it the wire spring in a pre-set angular position, the legs of the likewise pre-set declutching fork are then caused to move towards the wire spring, while engine and gearbox are brought together, so that the legs of the fork are moved to a position behind the lugs of the declutching bearing.
The known solution referred to has disadvantages when applied to freely rotatable declutching bearings which, as a consequence of a nonsymmetrical construction, can scarcely be pre-set in the angle of rotation position which is required in order that the desired interaction with the declutching fork can take place.
The aim of the present invention is to achieve an arrangement as stated at the outset in which the disadvantages referred to are eliminated. To this end the invention is directed toward an extensible element connected to the bearing unit, and also connected, for example, to the housing around the engine, for action upon the bearing unit to set an angular position of the bearing unit. The bearing unit is an assembly which is preassembled to and is rotatable relative to the clutch. The objective is to prevent the bearing unit from freely rotating and to set the angular orientation of the bearing unit.
By virtue of the presence of the connecting element, which is referred to there and which fixes the angular position, between the declutching bearing housing and the housing which is fixed relative to the engine, the declutching bearing can be pre-set at the precise angular position in which to be correctly brought together with the legs of the declutching fork. The displaceability of the declutching bearing which is necessary for the declutching movement during normal operation of the vehicle can be achieved, notwithstanding the connecting element, by virtue of the stated extensibility.
A further aim of the present invention has been to integrate, by means of the connecting element, a lubricant transfer to a sliding bearing situated in the declutching bearing. In one embodiment of the invention, therefore, the connecting element includes a flexible pipe which makes it possible to supply lubricant to the sliding bearing of the declutching bearing from outside.
Other features characterizing the invention emerge from the accompanying patent claims and the following description of an embodiment illustrating the invention. In the description reference is made to the accompanying figures in which
FIG. 1 shows partial schematically reproduced view from above of an arrangement according to the invention before an imminent bringing together of engine and gearbox,
FIG. 2 shows the said arrangement af
REFERENCES:
patent: 2068579 (1937-01-01), Tatter
patent: 2533568 (1950-12-01), Erskine
patent: 3610384 (1971-10-01), Borck
patent: 4117917 (1978-10-01), Ladin et al.
patent: 4560052 (1985-12-01), Renaud
patent: 4660702 (1987-04-01), Flotow
patent: 4687084 (1987-08-01), Leigh-Monstevens et al.
Bonck Rodney H.
Saab-Scanie Aktiebolag
LandOfFree
Arrangement for centering a bearing unit of a pull-type clutch does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Arrangement for centering a bearing unit of a pull-type clutch, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Arrangement for centering a bearing unit of a pull-type clutch will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-771693