DE1675161C - Friction clutch - Google Patents

Description

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The Hrlindim »hetrillt emc friction clutch with ;; = one by a Kupphmgsfeder in AchsrichUing the Coupling with respect to a drive plate movable inuf on this pressure plate which can be pressed preloaded in the axial direction of the coupling by means of · - !! Leaf springs with predetermined corrugation with a j « Coupling component. /. B. a ·, clutch cover. connected are.

"With such a friction clutch, as it became known through the Belgian patent specification 666 7IS is. are cover and pressure plate over in a circular arrangement and radially outside of the Pressure plate diameter provided, corrugated leaf spring elements connected to each other, which for Torque transmission and serve to lift the pressure plate when the clutch is disengaged. For this are these corrugated leaf spring elements in axis direction the coupling pretensioned and thus riveted. that the bending stresses a force in the direction of removal result. This yields a progressive attachment. parabolic course of the lifting force over the flow of the clutch, namely over the release travel and the wear travel. This means. that in the engaged state of the clutch Force of the leaf spring elements is significantly higher than in the disengaged state and with worn friction linings the clutch disc increases according to the wear. However, since the forces of the 15IaIttedern counteract the claw of the clutch pressure spring, this means that the force of the clutch pressure spring is weakened, whereby the risk of slipping when the friction linings are worn consists. Furthermore, there is, in particular, friction linings that are still worn when disengaging the here is .Iu- abliul> - Iv.v. Ruckriüha.iafi

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Cie.niiH .ii l-rlindiii.- will ü: cs hei a.r r.eibni!. ^ Kup;>iuni> der jin.aangs ei Λ-ili.ite.i all d.iu ... n eneichl . there!.-; the axiai geriehleteii \ (ir.-pannun.je:; e / uvai / liche \ (irspannunj in the longitudinal direction de. ,, ..: - feathers in Ιοπη ur.ei νΛκι dew entire, del., -...-- nodded in the l the VersehloiLW-μ unnassendc, -. A - bciisbereieh de. Coupling effective compression: -

superimposed in.

According to a preferred Av-sfuhi ungstorm is! The compression of the helical springs is generally chosen so that d, e, resulting from the two pre-tensioning forces, is essentially constant over the working range of the coupling. l: s is particularly advantageous! - ii; ili. if the leaf springs run in the shape of a selenium or a pressure tarpaulin, whereby the two linden trees of the second Bla'a springs can each have a common point of tension. Due to the selinen-shaped bi-leather leathers running over the printing plate, three such spring elements are preferably selected, which are attached to the clutch cover on the one hand and to the pressure plate on the other, and where the blue feather elements are attached in the area of their central length to the Pressure plate can be attached - an optimal design of the clutch is made possible, especially with regard to a uniform torque transmission in both directions.

On the basis of FIG. 1 to 4 let the F. r ti η du ng approach explained. Hs shows

Fig. I is a diagram of the spring characteristics of the known (dashed lines) and der Errindungsgeir.aLkn (solid line) leaf spring elements,

2 shows a leaf spring element according to the invention

F i g. 3 a fully assembled coupling, in the axial direction seen, partially cut.

4 shows a section along the line IV-IV dci F i g. 3, but without friction disc and flywheel.

F i g. I uses a diagram to show the spring characteristics of transmission elements, where dk st: enclosed line the spring characteristic of a tjbeitraguiigselemenies represents according to the previously known couplings, in which a preload de; transfer element only in the axial direction dei Coupling is provided, while the spring characteristic line of the new transmission element as out drawn line is shown. The spring travel λ is on the abscissa and dk on the ordinate Spring force /; applied to the transmission elements

The spring force of the transmission elements miif. have a certain value at the operating point of the clutch, i.e. when the clutch is engaged

I 675

Pieser value is at 2 on the abscissa of the Üiajiiainmes drawn. This Betrielispunkt relocated due to the wear and tear of the coupling parts. to the right and can be niaxinial up to the ιτιΐτ 3 hc / eiclmelen area arrive. Area 1 «Ic! Abs / isse marks the ventilation point of the coupling, i.e. H. the area up to which du · l transmission elements relieved when disengaging graze.

I \! -, t alsn recognizable that animal

tiaüungselemente from area 1 to area 2 lüui. with increasing wear and tear of the clutch line up to / around section 3.

From the diagram it can be seen that in the ik'u -. 'N transmission element, its spring force via ι di-ii total possible suspension travel of the transmission elements remains at least approximately the same. liiiiiiegeii changes the spring force of the Überertraviiiigseleniente. which are only preloaded in the axial direction of the clutch, quite considerably. :

Since the spring force of the transmission elements of the Ki al! Direction of the clutch pressure spring opposite is. this means that only in axial installation, in dash-dotted lines.! 1 . shown, while the strongly extended stand .ng the leaf leather in their installation area shows. The leaf spring is in this position to the amount Va in the axial direction of the

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Clutch preloaded and around the BetiagN I 2 each leg compressed in its longitudinal direction. This bias voltage V I 2 results in ζ. Β then, when the leaf spring is only attached to a coupling part via its central fastening hole 5

Either way, the union and then, at another coupling part, first about the trust. V a raised and the distance / between the fasteners 6 and 7 of the untensioned leaf spring is maintained even in the tensioned state. ie. the distance remains in both states . pour immediately.

. I · "i g 3 zeiü -ine finished monticola:;! Te coupling according to the in-hrl'nulium Viisnchuing. Thereof while F i g ~ 4 shows a section ^gcr: .SS the line IV-IN 'of FIG.. \ ti; '. but without the friction disc and flywheel, which have been left out for the sake of clarity.

In Fig. Ti is the clutch cover 8 and the plate spring 9 shown only in part.

The plate spring 9 lies with its outer circumference

Direction of the coupling preloaded transmission.

elements for releasing the clutch when new 25 in a known manner on cleats 10 of the pressure plate 11 a greater force must be applied to. At a distance from its outer circumference, and with increasing wear of the clutch linings, there is the contact pressure of the clutch pressure spring
accrues, whereby there is a risk of the clutch slipping. With the new transmission element each 30
it - ice remains, as already mentioned, the spring force of the
'pci iragimgselemente approximately the same size over the entire suspension travel, whereby the influence on

the contact pressure or release force of the clutch

the same work area (wear and tear 35 arranged fastening holes 5 via rivets 15 i-ückwet ·) remains constant. attached to the pressure plate 11. The transfer"

F i g. 2 shows a transmission element in the form of elements 4, as in FIG. 2 is shown in a highly distinguished leaf spring 4 with a fastening hole 5 in the neter position, so fastened within the center of its longitudinal extension and at the end with jam that the axially directed bias is because of a fastening hole 6 and 7. The leaf spring 40 is a bias in the longitudinal direction of the leaf springs is in its relaxed state, so it is superimposed on it.

Disk spring 9 on both sides of rolling rings 12. which are held by bolts 13, whereby the disc spring can be pivoted in a known manner. On the outer edge of the clutch cover 8 are each two leaf springs 4 with their respective ends on the clutch cover by means of rivets 14 together attached. The leaf springs or transmission elements 4 are centered with their in the longitudinal direction

For this purpose 2 sheets of drawings

Claims (3)

I. Friction clutch with uikt du.el. unc Kupphmgslcdcr in the axial direction tier coupling opposite a Miliiehmer-.cheihe movbai cn around! of this unpicßable Diuekplatte. the millets preloaded in the axial direction of the coupling IiI. iiilcdcm with vuihestimniier undulation with one; Kiippitmtisbauieil. /.B a coupling connected siiul. thereby ü eke η η ζ. e ι ch ii ι ι. dall this Yi>r-> paiiuuni · / usal / lent a bias in LangM lehre of the Blaltledem in I - '. in one over the nesamlen. the Ausriickweu (1 bi-, 2) and the verses! ilei! V, veg (2 to 3) and comprehensive work (I iiis 3) of the coupling ν ¹ .11isaiiKii Sui'.iehuiiii ub ^ rluiievt isl. :. Friction -: - skuppiun «nadi claim I. ue know / eielinel by an ilerartiue Suiuehung the 15lattiedern (4). that those from your own preparations resulting lift off over the work area (I to 3) the kupplunu essentially is constant ' 3. Friction clutch according to claim I or 2. datlui'eii L'.ekenn / eiehneL ckilJ the leaf springs (4) tendon-lomiig / ur pressure plate ill) run, the l-'nclen of two leaf springs i4) each having a common fastening point (14) be able. "" m ",