Multi-step switch

The invention concerns a multi-step switch with a bar held in the individual Schaitstufen by a plague position mechanism, which by a Steuerdmck after overcoming of the determination mechanism ausge'tlbtenKraft from into the other switching position shift will and preferably under the influence the actuating pressure the equilibrium feather/spring holding stands. With the well-known switches of this kind the control bar is sealed more gegentlber the wall one it storing housing and/or one it taking up in the housing used Btlchse by means of O-rings, with these rings arises when long remaining on a Schaltpnnkt a so large static friction that the actuating pressure, which is to shift the control bar must increase strongly, to it in the situation is the static friction to be ttberwinden. Is however this friction tlberwunden, arranges sudden surplus Sreuerdruckes control bar, which next stage, in which it should hold, to jumping over. In ungtlnstigstenFalle can take place even connecting the control bar through up to the last stage. Attempts to uaterdrtlcken this feature by a larger diaphragm and a stronger feather/spring for the reconciliation of the actuating pressure ftihren in addition that then the Steuetstange between the individual switching points creeps as it were, because the control bar in the slots, in particular ball stop units, holding individual steps, approximately! more lber the large adjusting forces ineffective are. Around these disadvantage to eliminate soft is on this influencing actuating pressure under possible shift on the control bar to these tlbertr tgt with more lvlehrstufenschalter the initially mentioned kind on the bar print-ticks according to invention adjustably arranged. Thus z develops between the attack region ftlr the actuating pressure. 13. a diaphragm and the shifter rod a dead course, by which inadvertent connecting through is avoided. For this purpose still additionally Ilbertragende, araftspeichernde feather/spring knows to be used between the bar and on its adjustable print-ticks the actuating pressure by the Drucksttlck on the bar. In the design a Ausftihrungsbeispiel of the Mehrstufemchalterz according to invention in axial profile is represented, whereby the left half shows the switch in first and in the right in the letz95 ten step. The control of the switch is a bar 1, which in one from three parts 2 ', 2 ", längsverschtebltch is stored 2 ' “existing housings 2. In the available Ausftlhrungsbeispiel is the bar 1 with ftlnf, per a Stenerstufe zugeordnetenNnten 19 provided and serves for the optional connection of two sources with various consumer places. As sources a connection 23 fttr an argument supply line and an in connection 24 intended for a Sntlüftungsoder DruckmittelrtlckfUhrleltung are. Ftlr äie lines ftlhrenden to the consumer places are certain four connection points 3, of soft for the sake of simplicity only two are represented. These seaweeds 1 is at their äul first-end and inAbstand from this with ever amGehäuse 2 and/or. provide sitting socket 6 to in this closely fitting O-ring 7. IE after size of one up one diaphragm 4 of influencing actuating pressure is connected the Druekmittelzufuhrleitung connected with the connection 23 however the area 25 formed between the rings 7 or the breather pipe connected with the connection 24 more faber before the face of the bar to 1 area present 5 in sequence with the Amehlußstellen 3 fi the lines leading to the consumer places. The Ste uerdruck is produced in the available case by a gas, which by the line 8 into the area 9 Elber those! viembrane 4 arrives, whereby the area 26 which is under the diaphragm stands for such over - 2 - the No. P33342 opening 27 with the Außenatmospbäre with a line supplying a UnterstlJtzungsdruck od. in connection. The diaphragm is with their outside edge in the housing 2 and with their internal edge between shims! 0 clamped, which are firmly connected to 1 längsversehtebbar storage thrust piece 11 with one on the bar. Between the Druckstlick 11 and the bar 2 is assigned 14 ktaftspeicherndeFeder 12, with their freienEndeu anWiukelringen la, lies close, how the end of the part of 13 at a paragraph 15 of the thrust piece 11 and the end of the part of 14 to on the threaded piece the 21 of the bar! aufgeschra clocks mother 22 knock against. The bar! surrounding feather/spring 16 holds the equilibrium for the actuating pressure and sits with their an end on a paragraph 17 of the housing 2 and with its other end on a paragraph 18 of the thrust piece! 2 up. The enular grooves 29 serve as slots, into which spring-tensioned balls 0 catch, as soon as the bar 1 took the exact switching position in each case. Appropriately one ball each 20 is intended at two diametrically facing steep ones. In addition, several balls 20 can be distributed in same Wirtkelabständen around the bar. It is substantial that by the balls the 20 on the bar 1 expenditure-practiced radial pressure is balanced, so that this is not loaded on one side the beschäebene multi-step switch works in the following Weise* in the left half the design illustrated first step is all connection points 3 more elber the area 5 with the connection point 24 connected. An increase of .des actuating pressure at the diaphragm 4 causes a putting of the DruckstIickes 11 forward and thus a Kraftspei.eherung in the feather/spring 12. As soon as these Kraft Kugekasten expenditure-raved pressure, increased by the Haftteibung of the O-rings, exceeded the through those, push they the bar 1 around the distance between two neighbouring enular grooves 19 before and the balls 20 engages alw that enular groove 19 ' into the nächstfotgende, d.i. into the second enular groove 19 ". In this position first (not represented) is switched and over denRaum 2,5 off to one argument supply line the leading connection point 23 attached, that to a consumer place leading connection points 3 by the area 5. With further increase of the Steuerdruekes these expensive bar in each case put description end position forward reached, in which all connection points 3 by the area,5 switched off and to the connection point 23 are attached around a stage, to ste in the right half of the design. The Rückfühmng of the control bar with Herabsinken of the actuating pressure procures the feather/spring 16. Connecting the bar through! it is avoided with the construction according to invention by the fact that after that-assigned feed motion of the bar 1 a discharge takes place immediately the feeding force storing feather/spring 12 as well as a relative motion between thrust piece 11 and bar 1, whereby a sudden mining DEMAG of the adjustment strength enters. Remaining Kraft is only sufficient, the adjustment of the bar of the one up to the other enular groove not to cause however Elber this outside. Of course different constructional Abändetungert can be made in the context of the invention. Like that it is for example possible to omit the feather/spring 12 to store in soft case the feather/spring 16 the whole amplifier express strength has. Weather can be consulted aIs actuating pressure instead of pneumatic, an electrical, a magnetic or a hydraulic Kraft. In addition, it is possible to consult that for the connection point 23 prominent Dmckmedium Elber the opening 8 for the influence of the Memhrane 4. The switch according to invention can be used for the influence of Impulsgebem of arbitrary nature. In the represented Ausftlhrungsform can be used multi-stage-scolded for the control of removal pressure pipes by Komptessoren. In this case the Abhebedruckieitungen is attached to the connection points O. With the shifter rod also different change-overs can be durehgefllhrt.