DE1902840U - TRANSMISSION FOR CONTINUOUSLY CHANGING THE SPEED. - Google Patents

Description

Afl098055-3 9.

Jlö-eatia "Pat ent-Verwaliungs-G ·« in «, b _β H ₀ Frankfurt / Main ₉ Theodor-Stern-Kai 1

25 643

8 gears for stepless speed change

Di® ! Firing refers to a gearbox sur stepless change of speed »

Ei are Yerstellgetriebe sur st & fenlosen speed control "famous _s essentially of axially Yersehlebbaren conical disks" consist: Dip speeds depend check -in such operated according to the mitfeieren diameters of swisehen the Eegelscheiben running V-belt _o Speed change is "examples the" known arrangements, the axial Distance between the cone washers changed ₉ by means of suitable devices, which at the same time causes a change in the mean diameter.

There are also known Eahngetriebe in which flexible gesähnte belt corresponding Zalanwsllen or discs propel _o 13s has also been proposed ^ the sides of such toothed belts for reasons of decreased inventory and uniirersellen applicability wedge-shaped _s absuschrägen around the belt on cone pulleys in the belt operating su benutsen able

'? The operating range of the adjustable erstellgetrieben _g ICegelscheibea contain ₉ iat by the rapidly growing required surface pressure of the belt with decreasing average Mreteaessern "feegreiigt _{g d;} e' inversely proportional increases with the square of the effective diameter.

~ ² "PBjJTr _1- _25_643 ^ J

Die! Teuerung- feeswesckt ,, &ereich'von the presents provided with adjustable conical disks transmissions "at full utilization of ^one lulässigen Pläeaeapressung 'to increase or the life of the belt in the area of small average DurOhmesser au

.the Keuerp @ £ r achieved -this is that at least one wedge-shaped toothed belt is provided, which is in a? Basic turning range is positively connected to a gear shaft and, when the speed changes beyond this range, is frictionally connected to Kejel disks axially displaceable to one another with a diameter according to the desired speed «.

Zmr increase the lifetime of the wedge-shaped Zahnriemen® is the Drehsalilbereichj) in which 'the torque dureh a combing Zahnrismens with the teeth of WeIIe ₅ thus exceeded formsohlüasig is "wearing ₉ even at moderate Durulimessern ₉ in which a Moiaeniitibertragung solely by frictional engagement between "timing belt and conical disks would ■ possible» 1st however, a particularly large ratio desired ₉ so it is vorteilhaftp .the -by fermsöhlüssige connection of meshing with ä®x spline toothed certain Drehsahlbereich aa the äureh frictional Terbindung of 2ahnriem @ ns with the Kegelseheiben certain Turning mill. to be added « The total achievable turning range can then be transferred to the _; Range of small average diameters5 _. ± xi which, with pure V-belt operation, during continuous operation, overloading of the tensioning belt occurs wlii ^ deg wlii ^ deg wiT & en *. The changes' S-ex speeds with small average diameters are relatively large even with small changes in the diameter of the durometer, since the "Abtrie-ssdrehsahlen the wedge-shaped gears with a driven toothed shaft" increase hyperbolically. The described embodiment of the invention can therefore, under certain circumstances, achieve several levels of translation. In addition, it is always in the lower ranges

high stress on the belt "significantly reduced» '·

In the case of many downfalls, the loröerang according to Dane rib © drive with awei-weifeinaader lying revolutions ^ "whereby a speed is preferred .driven" An example of this is offered by \\ rasehmasehinenastriebe ₉ which drive during the largest part of their BötrieTbsseii with low washing revolutions and only relatively seldom to spin _{speed 9,} the Ms to twelve "faöksn the washing speed ₉ can be switched. Such a high speed change he distinguishes ₈ which are difficult to achieve with pole-changing motors with bearable effort, sinö-a." preferred 'Field of application of the gear according to the invention' Here one can swisohen a frictional connection of the timing belt with the conical pulleys for dating drive external speed range for high output speeds to the rotation range determined by the connection of the timing belt with the toothed shaft -g in which low output speeds start when the cream shaft is driven ₉ an intermediate area that is not approved for continuous operation »If the drum of a washing machine is driven by the toothed belt, especially when the toothed belt meshes with the splined shaft, which is particularly low-wear during operation, all you need to switch to the spindle speed is the conical pulley !! axially shifted to each other. " The toothed belt is then "if he aas" the yawn of the shaft 1OiSt ₉ immediately caught by the wedge effect of the taper disk ^ and reaches naeherfcl "kuraaeitiger overload in increasing average diameters (ie, higher output speed Ahlen) the jsttlässige for continuous operation Sehleuderdrehzahlj, wherein the lläehenpressung of the V permissible values anninmt. Since spin only "rare in washing" programs occurs _a is acceptable, the price-time overload the axially movable cone discs can axially through the tooth profile of käBMenden with the toothed belt shaft s @ ₉ so dai3 to tooth Walle .and management of Kegelechei- hen in © IAEM operation Prepare let ₀ target However,

very easy axial displaceability of the conical disk can be achieved _D so -these can be molded by balls running in rounded hats. "These rounded grooves can be identical to the tooth gaps on the shaft ₈ if they are round for the balls" -They -rounded "(the grooves of the conical washers - grasp the balls in their outer half.

The! Inflation; 'is based on the execution of a game sfeei erläutert- darstelleaden · drawing closer _o

It shows. ■ .'-., ..-

la a ©. © / drove © j $ em according to the Jieyi@ria.mgs,

Tb a sonity through the transmission of the Pig. 1a.

Ia Figo 1a drives constitute electric motor at a constant speed, the i Eah & wave to 2 ,, on both sides of its tooth profile 4-3 gerundete'Staten -enthalt _s where .laufen associated by a cage Kugein 5 © The Kmgela are also in rounded hats 6 of the conical disk _"s stored the thus secured against radial Yerdrehung _9, however axially movable siad" the Snd ^ oheibea 8 lie firmly against the snap rings 10 is pressed ^_s!; since the two "springs 9 get one preload en _o Pie Siemen- '· pre-tension p ^ dl © in both ^: Truima £ ^ is the same size ₆ , by one of the well-known means ^ in Figo Ib of the drawing by the movement of the- Tension pulley lifters 13 according to reohtSj, caused "The tension pulley 15 thereby pushes the wedge-shaped 2aiiarieman 11 to the right and awingt him ₉ the Piadi-ias on the conical disks 7 despite the counteraction of the springs 9 ~ λ ve-rkleinera" At the point of this movement the Kegelssheiben are then forced apart gear. Ia "this 2mstaa'd ₉ al" so3ei maximum decency is laaiden Kegal "scheiben.ä ,. meshes the toothed belt 11 with the teeth 3 of the shaft ₉ S d _o ho di © speed 'DES ^ The toothed belt and thus the speed of a _{plate driven by it 9,} not shown, has a large diameter, so it is small «._ With this type of actuation

25 645 "

the Federdriiclc remains on the conical pulleys ₉ so that part of the torque of the motor 1 is transmitted through both the wedge-shaped side surfaces of the teeth and the cream-free beveled belt zone 12 of the wedge-shaped Zälmrieiseas 11 the tensioner roller lever 13. to the left "moved (Fig. Ib) ₉ whereby the belt gate tension decreases o Now the force of the two springs 9 predominates? which tensions the belt 11 less to _{the same extent 9 as the tensioning pulley 15 9} push the two conical brackets 7 together o The toothed belt 11" of the is grasped by the pushed together conical discs 7 _s is detached from the teeth 3 of the shaft 2 and migrates with continued force of the springs 9 raid further pivoting of the tension pulley '15 in direction B' on the conical discs radially outward, whereby the average diameter and hence change the output speed of the 2ahnriemens. 11 If the Spannrolleiihebel 13 in direction A, who then pivots "11 moves the toothed belt in calibration Tung A 'to share ^ until it schließlioh in the end position of the conical disks again with the teeth of the shaft 2

It's sur. Speed change not required, move both conical disks suj it is sufficient ₉ if one conical disk is moved against the action of a spring. When the "movable conical disk is shifted, however, the wedge-shaped toothed belt also shifts in the axial direction = it must therefore be ensured in this embodiment that the tensioning roller 15 'and the not shown FlaGhsoheibe allow this displacement of the wedge-shaped toothed belt 11.

The required for axial Terschiebung of the conical discs force can also be applied duröh a gange ₉ by which ER "amsammen the sheaves or ause'inandergeschoben _o In this Ausfütoungsform then siad no force accumulator"

Xönnen the ICegelschailben easy so far

«6 - ■ PB-Mr ₀ 25" 643

be pushed out ₉ . that "with pure toothed belt operating 'no Fläeheapressong the wedge-shaped Hiemenflenken have done DIE conical disk ?! ssoJBo a sittleren By measuring Heritage * = rich won '25 aim rock 120 BHa ₉ as the maximum ^ by wedge · - riamenbetrielb reached © Translation approximately 1 s 5 "one now-at Closes the bottom ₉ 't ÜR Keilriemenbetriefe säülä-lar diameter a zone de © pure Zahnrieiaenantriebes sn ₉ a diameter ^ EDUCING ¥ on" for example, only 5 mm due, - "so obtained already won a maximum Gesamtübtrsetzung 1 s 6 »

If, on the other hand, you want to drive relatively far apart lathe tool ranges, you can. dominate the lower area by pure tooth drive * Between this nn1s @ Ten and your upper one. Area there is a zone in which continuous operation is not permitted because the required surface pressure is too great for it "Ib" a certain diameter begins the upper permissible area. ^ In which the surface pressure for continuous operation assumes permissible values only the need to avoid continuous operation in the non-sulSi = gen area. The fortsil of this particular form of formation, the le'ne ^ lng; is it _? ä & S selir sharply deviating turning tools can be continuously changed =

Claims (2)

M098055-3.9.6f Iiicentia 'Patent · = ■ Management Gf «, mob <> H. 25 643 Sehata claims "V @ets? iebe sur 'stepless Brehgahl change _s characterized, that at least one. wedge-shaped toothed belt (11) ₉ which is positively connected to a toothed shaft (2) in a tomddrehsahlbereieh are connected via this when changing the turntable. Area also with axially saeinanäer Teraehiefefeareia Kegelscheibea (?) Positively connected in a diameter according to the desired DreMiahl 2) & @ © tri 1be according to claim ₉ characterized in that the D ₉ dsrrela frictional connection of the wedge-shaped toothed belt. mens (11) with the conical disks (7) for continuous operation suläs sige Drehsahlbereich also the oil-free connection of the wedge-shaped cream belt with the toothed shaft (2) be Drehaahibreieh includes " Gearbox n & oh Inspruck 1 ₉ daderoli marked _f . that the ¹ extends through the positive connection of the wedge-shaped Zaimrieiaen (11) with the conical disk a (?) for continuous operation sulas sige turning range see to sii äem through the form-fitting connection of the wedge-shaped Zaimrieiaens with the toothed shaft » Transmission according to _{spoke 1 9,} characterized ₉ that m \ a duroli power hit s ige connection of the kailförmi = ² - PB-Mr _n 25 645 the toothed belt (11) with the control units. (7) for continuous operation 'permissible speed range and the through positive : The connection between the wedge-shaped tooth and the. ZaIm-. well © a certain Beehsahlbereich not for continuous operation laid out 'intermediate area is located at its Diarohlaaf the permissible surface pressure. of the wedge-shaped toothed belt course ^ is exceeded » i) companies according to address Ί or the following ^ dadnreli gekenndaß the axially displaceable conical disks (7) the tooth profile with the wedge-shaped toothed belt (11) känane.nd © n shaft (2) "held sincL '<'), © gears according to claim 1 or subsequent to 5 _S characterized in that the axially displaceable conical disks tan (4 ;, ζ) running balls held against radial movement