DE2207147A1 - Timer - Google Patents

Description

2207U7

PZh (-

Applicant;

OMP Officine
Keccanoplastiche
cii Preciaione SpA
03011 Alatri, Frosinone
Italy

Time switch] c

The present invention relates to a Zeitschaltverk with fast circuit for generating switching pulses of different duration, especially for washing machines, dishwashers and the like.

The buckle mechanism of this invention consists of one double gear driven by a drive gear, where da3 Drive toothed with one at both ends in a short and 180 ° opposite provided in a long nose tapering pegs is. The noses grip respectively the lower and upper tooth ring

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a. There is also a lever locking device with two vertical ribs for engaging the teeth of the double gear. /

In the course of an earlier patent application by the same applicant, a timer for automatic program-controlled switching mechanisms was described, u.zw. Art'der in the high-speed switching, wherein ■ 'where the time interval from one pulse to another, the pick feed means of the switching mechanism for each single pulse is equal. To put it more clearly, the duration of one impulse group may be a multiple of the duration of another impulse group.

The rear derailleur according to the aforementioned patent application is also characterized by the fact that the individual pulse groups do not absolutely must adhere to a special sequence; the one to be observed Follow-up order can be determined in advance on the basis of the draft

The timers according to the above patent application also have a feed system with a simple one, the calculation of whichever one predetermined point of the cycle enabling device and plus the automatic feed lock in such a way that after a predetermined period of time the feed is resumed.

Another characteristic of the switching mechanism is that it makes exceeding the limit impossible - common disadvantages of the time switches with quick impulses of the earlier technology - u.zw. in that here comes to bear not only safe but also cost-effective mechanical arrangement.

The timer with quick impulses according to the present supplement has all the features of the timer as mentioned above Patent application and should, after all, with different means, the same purpose reach.

In particular, the present invention relates to a high-speed pulse, time switch mechanism, provided with a device which makes exceeding impossible, which moves the do-o-cogwheel from one step to the other in such a way that a pulse sequence of different duration is now possible.

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This device consists of a lever pivotable at one end and set in motion by a central spring other end of the lever is operated by a drive element and against the said spring pushed beak 'provided, wherein in the Smock position of this lever svei in the teeth of the said double gear engaging ribs are provided.

The other purposes and advantages of the timer according to the Invention will become apparent from the following description and from the accompanying drawings, wherein the preferred implementation form set forth should be and in which:

Fig. 1 illustrates a partial view from above of the timer according to the invention}

Fig. 2 is a view from above of the base of the timer,

on which the locking device according to the invention are arranged together with the double drive gear;

Fig. 3 is a view from below of the drive gear and

Fig. 4 is a view from below of the locking device according to the invention together with the drive gear.

The timer according to the present invention consists of a gear 10 with an upper and a lower ring gear, the teeth are arranged in such a way that they combine the desired pulse train with the Compensated for different periods of time. The gradual advance of the Said double gearwheel 10 takes place by means of the drive gearwheel 17 *. On this wheel 17 there is a lug lying in two 180 * against one another elongating axial pin 22 is provided, the short cheese 23 only in the lower ring gear of the double gear 10 and the long nose 24 above To intervene in both the lower and the upper ring gear of the wheel 10 reduces the time from one step to the other subsequently end, the liases 23 or 24 remain between one and the another tooth of the ring gear of wheel 10. In this way, the Bike 10 locked vuid made the crossing impossible.

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The timer according to the present invention differs from the timer according to the earlier patent application by the way in which the double toothed wheel 10 is blocked and the crossing is made impossible. The apparatus for this purpose will now be described with particular recourse to the drawings.

The double gear 10 is set in motion by the lugs 23 and 24 of the drive gear 17, which in turn is operated by a transmission gear already described in the aforementioned patent application. As can be seen from FIG. 1 , the wheel 17 is characterized by the two lugs 23 and 24 and the cam 18 underneath with the two inversely symmetrical projections . The rest position and work of the wheel 17 are determined by a coil spring 19 acting on the aforementioned double projection cam.

The work is carried out in such a way that, as can be seen from FIG. 1, the noses 23 and 24 do not engage the teeth of the double gearwheel 10 during the rest position. With every 180 ° arc of rotation , each lug 23 or 24 engages in the wheel 10, drives it further by one tooth before it emerges again.

Crossing the wheel 10 is made impossible by the device now to be described. The same consists of a lever 50 which can be pivoted at one end and is located on a pin 51 fastened to the housing of the timer. A small helical compression spring 52 sets the lever 50 in approximately its central position in motion. At the other end of the lever 50 there is a beak 53 that comes to rest on the pin of the drive gear 17 in the rest position. The rest position of the lever can be determined better by the lock 58.

Uebereinstiranend with the attached to the derailleur base lock 58, the lever 50 in the two Zaehnc of the double gear 10 engaging vertical hip 54 and 55 (see Figure I).

Before the operation is described, refer to * Fig. 3

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be pointed out which the work gear 17 with the two against the Underside of the cooking 18 protruding drive 2aehnen illustrated. Of fundamental importance is the fact that the radial surfaces these teeth 56 and 57 have an Xreisbogenprofil with the center in Have the center of the wheel 17.

In the rest position shown in the figures, the ribs 54 and 55 engage the teeth of the wheel 10, and the beak 53 touches the front flank of one of the drive teeth of the wheel 17 'e.g. of the tooth 56 in FIG. 4. The rotation of the gear 17 takes place in 4 in a clockwise direction, so that the beak 53 from the tooth 56 lifted. The subsequent angular displacement of the lever 50 by the Pin 51 against the force of spring 52 becomes the teeth of the double gearwheel Let 10 emerge from the ribs 54 and 55.

The wheel 10 will at least not be able to rotate freely in this position, since it is uninterrupted from that already in the foregoing Patent application described spring pawl 59 is retained.

Turning further in the direction of the ulcer (see Fig. 4.) the tip of the beak will slide along the radial surface of tooth 56 and will be determined by the arch shape of this radial surface, the lever will not be able to move angularly any further. The positions of the drive teeth 56 and 57 with respect to the Noc "? Nflanks are such that as soon as the drive gear 17 starts up. " so soon the double gear 10 ur.i turns one step further, the beak 53 snaps onto the rear leg of the tooth 56, which in turn under the pressure of the spring 52 brings the lever 50 into the rest position vertical ribs easily intervene in the dLe «aehmi des Ra-Ie * 10 and v ^ 'offer the. Feed,

It is now clear lie.it mu 'hand, as in Zahnral 10 einsaltu Z..jhne Ln one or en: .t an'lerm loimUranz pale koen.isu, I us dör lever necessarily genaa so the Zahnkraenze wia of the gear 10 nebsn and / w. " ^ .- i; -indßr distant IU, ';> ~ a .'4 and yj aufwoJLiüU j.uuj »So it became aiii / ui · to ja form the Spurrvorrlchiimy after the

In the present case, the booklet »ciit Ütr ^ iijrhiiä soli

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be that many modifications and variations are single moegllch to which the access versed in the art can to individual specific requirements, without thereby comply uebersehreiten the limits of the invention.

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Claims (1)

Patents Zeitschaltuerk r.-.it fast switching to generate s different durations consisting of a double gear (10), operated by one: work gear (17) on which an oich is turned into a short (22) and a 180 ° overlying long rabbit (24) extending Axial pin is provided, with the ITases or in the upper and the lower Zolin ring of the extended gearwheel (1O) engage, characterized in that there is a locking device (50) with two in the teeth of the double gear (1O) meshing thin vertical Has ribs (54, 55), and that the drive gear (17) has teeth (5S, 57 has the nit provided on the locking device (50) To work on the beak (53), 2, time switch "; according to claim 1, characterized in that the mentioned locking device has a lever (50) pivotable at one end on a pin fastened to the housing of the time switch mechanism, and that this lever has at its other end one of a compression coil spring (52 ) rotated beak (53) _t whereby the spring presses approximately on the middle of the lever (50), 3.- Zeitschaltwerl: according to claim 2, characterized in that that the tip of the head (53) of the lever (50) is in its rest position on the axial journal of the drive gear ca (i7), and that the lever (50) on a lock attached to the bottom of the housing of the timer (58) lies. A, Zcit £ chaltwerk according to patent claim 1, characterized in that the ^ vei vertical ribs (54, 55) are carved out of the lever body (50) in one of the support lock (58) provided on the Gchaeuccboden of the timer. 5. Ziit-chaltwerk according to patent claim 4, thereby gekenijzcichnet, ucc-s eic z: ia. ^ disenfranchised auü de * n IlebeJkoerp ⁰ ** (SO) elaborated Eippea (54, ¹ Sj) just as far as the Zalmkraenze of the double dietary council (10) before * cinoüder unurnt sing. 209839/0710 / BAD ORK51NAL 2207U7 6. Time switch according to claim 1, characterized! that the drive gear (17) at the bottom one with two reversely asymmetrical provided with flanks provided cams, from which two drive teeth (56, 57) of the lever device (50) protrude. 7. Time switch according to claim 6, characterized in that the radial surfaces of the mentioned drive teeth (56, 57) in the circular arc profile are formed, the circle center coinciding with the center of the Drive gear covers. 8, - time switch according to claim 6, characterized in that the corresponding positions of the aforementioned drive teeth (56, 57 and of the two cam flanks (18) of said drive wheel (17) are such, that the lever (50), the two ribs (54, 55) lifts from the teeth of the double gear wheel (10) to under the action of the drive wheel (17) adjust the feed by one step so that the double gear immediately goes into rest position and prohibits crossing " 209839/07 10