EP0172926B1 - Operating adaptor for command or signaling devices, in particular emergency stop switch - Google Patents

Operating adaptor for command or signaling devices, in particular emergency stop switch Download PDF

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Publication number
EP0172926B1
EP0172926B1 EP84110053A EP84110053A EP0172926B1 EP 0172926 B1 EP0172926 B1 EP 0172926B1 EP 84110053 A EP84110053 A EP 84110053A EP 84110053 A EP84110053 A EP 84110053A EP 0172926 B1 EP0172926 B1 EP 0172926B1
Authority
EP
European Patent Office
Prior art keywords
slide
push button
locking
sleeve
constructed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP84110053A
Other languages
German (de)
French (fr)
Other versions
EP0172926A1 (en
Inventor
Heinz Grunst
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Square D Starkstrom GmbH
Original Assignee
Square D Starkstrom GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Square D Starkstrom GmbH filed Critical Square D Starkstrom GmbH
Priority to EP84110053A priority Critical patent/EP0172926B1/en
Priority to DE8484110053T priority patent/DE3472731D1/en
Priority to AT84110053T priority patent/ATE35747T1/en
Priority to ES1985296197U priority patent/ES296197Y/en
Priority to US06/766,814 priority patent/US4703141A/en
Priority to CA000488962A priority patent/CA1265565A/en
Priority to DK377385A priority patent/DK165310C/en
Priority to NO853308A priority patent/NO163429C/en
Publication of EP0172926A1 publication Critical patent/EP0172926A1/en
Application granted granted Critical
Publication of EP0172926B1 publication Critical patent/EP0172926B1/en
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/022—Emergency operating parts, e.g. for stop-switch in dangerous conditions
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/022—Emergency operating parts, e.g. for stop-switch in dangerous conditions
    • H01H2003/0246—Resetting of bistable emergency operating part by rotating itself or an accessory

Definitions

  • the invention relates to an actuating attachment for electrical command and signaling devices, in particular emergency stop switches, with a locking device for the operating position, a slide being arranged displaceably in the device housing by means of a push button, the slide also being surrounded by a sliding body, in which opposite locking pins are held in transverse bores under spring pressure, each locking pin cooperating with two locking points located in the direction of displacement at a distance from each other on each side of a projection and the projection on the side corresponding to the rest position has an inclined surface, whereby in addition, an outer pressure spring is arranged between the push button and the end face of the housing and an inner pressure spring is arranged between the push button and the displacement body and the push button is connected to the slide, the second being furthermore n Locking points are designed in accordance with the operating position in such a way that unlocking takes place only by turning the push button around its longitudinal axis.
  • An actuator of the aforementioned type is known from FR-A-2521768.
  • the inner slide is provided at the lower end with a body that holds pins in a first locking position. It is enough to move it a very small way to release the pins and trigger them. Since tripping, as practice has shown, is due to mere oversight and is completely undesirable, undesirable malfunctions can occur in the known device. This is because the device has two pairs of locking pins in order to be able to distinguish between deliberate tripping processes and circuits caused by accidental contact by means of different locking positions using a display ring.
  • the slide has an opening in the form of a transverse bore in which there are two locking balls, which are pressed apart diametrically by a locking spring into the locking recesses provided on the housing.
  • Pressure springs are inserted between the slide and the housing on the one hand and the slide and the push button on the other hand in such a way that they always try to move the slide together with the push button from the first locking position to the second locking position in accordance with the operating position. It is therefore sufficient to press the push button slightly to release the balls from the first locking troughs, so that the slide is then suddenly moved by a preloaded energy storage spring until the balls snap into the locking troughs of the operating locking position.
  • the push button is withdrawn in the axial direction against the force of the two springs until the balls engage again in the locking troughs of the first locking position.
  • the device is expressly designed in such a way that it should be tamper-proof while avoiding a rotary actuation of the push button, namely that the switching operation is only triggered by pressing the push button, after which the switching operation should then take place completely uninfluenced from the outside.
  • a locking device for circuit breakers is known from DE-A-3113034, which prevents the circuit breaker from being unintentionally switched on again and shows whether the circuit breaker has triggered itself or has been actuated via the emergency stop button.
  • a special construction of a locking slide is provided transversely to the direction of movement of the drive plunger. The locking slide prevents the circuit breaker from being switched on again. To switch it on again, it is necessary to move a drive button to the starting position.
  • the invention has for its object to provide an actuator that only by a deliberately strong pressure on the push button and moving the push button over a relatively large way ri; e triggers, which also locks the operating position and identifies it to the outside and at which the return to the rest position is only possible by an operation that is not immediately obvious.
  • the sliding body is designed as a cylindrical sleeve which slidably sits on the likewise cylindrical part of the slide, that the slide has flattened guide surfaces on the circumference opposite one another and the inner surface of the sleeve with corresponding flats on the slide part is adapted that the slide has an opening widened in the direction of displacement, that the bores for receiving the locking pins in the sleeve are continuous and the locking pins, which are designed as hollow pins with hemispherically rounded outer ends, are so long are that they partially protrude into the widened opening of the slide and are movably guided therein, that there are only two hollow pins in which a single compression spring engages with their ends, that the second locking points have a part that is sickle-shaped in cross section, so that the hollow pins when the pushbutton is turned, it is pressed continuously out of the locking position into the bores of the sleeve and the opening of the slide, and that an actuating
  • the actuating attachment explained below is mounted in the exemplary embodiment shown in FIGS. 1 and 2 on a mounting plate 1 which has a hole 2 through which the lower part of the actuating attachment, which is shown in the drawing, can be inserted, namely a threaded attachment 5 and a cylindrical attachment 8, which rests with its outer flange on the mounting plate 1.
  • the attachment is optionally carried out with the interposition of a washer 3 by means of a nut 4 which is screwed onto the threaded attachment 5.
  • the flange of the cylindrical extension 8 is covered by a collar 6 of the threaded extension 5.
  • the housing base 7 of the housing 9 bears against this collar.
  • the lower part of the housing 9 in the drawing is covered by a cylindrical jacket 73 which merges downwards into a part 74 which is square or round in plan view.
  • the flange of the cylindrical extension 8 and the collar 6 are adjusted accordingly square or round.
  • a circumferential groove 10 is provided on the circumference, into which an annular bead 11 is clamped at the lower edge of a flexible sealing hood 12.
  • the other upper edge 13 of the sealing hood 12 is fastened in an annular groove 14 of an inner cylindrical extension 15 of a push button 16, so that the flexible sealing hood, for example made of rubber, closes off all the moving parts of the actuating attachment explained below in a dust-proof manner to the outside.
  • a cavity 23 for receiving a part of the sealing hood 12 is provided between the projection 15 and a slightly conical downwardly extended edge 17 of the push button, in particular for the operating position of the actuating attachment, as can be seen from FIG. 2.
  • a display plate 20 preferably a red plate of an emergency stop switch, is provided, which is provided with locking projections 21 and 22, which in turn engage in recesses 18 and 19.
  • the display plate 20 is thus also interchangeable.
  • the push button 16 has a central bore 24, through which a screw 25 is passed and screwed into a threaded bore 28 in the head 27 of a slide 26, so that the push button 16 is firmly connected to the slide 26 and at the same time the upper edge 13 of the sealing hood is tightly clamped, namely between the cylindrical extension 15 of the push button and the upper shoulder 29 of the head 27 of the slide 26th
  • the slide 26 is surrounded by a displaceable sleeve 26 which is cylindrical on the outer circumference, essentially on the lower half of the slide, as can be seen from FIGS. 1 and 2.
  • An outer compression spring 31 is inserted between the head 27 of the slide 26, more precisely between a guide recess on the edge of the shoulder 29, and the end face 33 of the housing 9.
  • Another inner compression spring 32 is located between the shoulder 29 of the head 27 of the slide 26 on the one hand and the upper end face of the sleeve 36 in the drawing, an annular recess 35 being provided in this end face of the sleeve 36 for better holding of the lower end of the inner compression spring 32 is incorporated.
  • the sleeve 36 has two mutually opposite transverse bores 37 and 38, through which a hollow pin 39 and 40 can reach. As will be explained in more detail below, these hollow pins serve as locking elements.
  • the hollow pins 39, 40 are rounded at their outer ends in a hemisphere. They are constantly pressed outwards or spread apart from one another by means of a compression spring 41, the ends of the compression spring engaging in the hollow pins as shown.
  • the hollow pins 39 and 40 are dimensioned so long that their inner ends still partially engage in an opening 42 in the slide 26 as shown. However, they may only be dimensioned so long that they do not meet with their inner end faces against the force of the compression spring 41 in the pressed-in state.
  • the opening 42 of the slide 26 is widened in the direction of displacement, that is to say upwards in the positions according to FIGS. 1 and 2, while the width of the opening is dimensioned perpendicular to the image planes of FIGS. 1 and 2 such that the hollow pins 39 and 40 are freely movable.
  • the essentially cylindrical slide 26 has flattened guide surfaces 43 and 44 on part of its circumference, which run perpendicular to the image planes of FIGS. 1 and 2.
  • the inner surfaces 45 and 46 of the sleeve 36 are correspondingly planar, so that these surfaces slide on one another, but above all provide a rotation lock between the slide 26 and sleeve 36, so that only a sliding movement in the direction of displacement between the slide and sleeve is possible, but not one mutual displacement in a direction of rotation about the longitudinal axis.
  • a pot-like holding element 47 with a guide cylinder 48 is screwed tight by means of a central screw 49.
  • an actuating body 58 is held, which has an outer projecting guide edge 59 for the lower end of the sleeve 36 on its upper end face. Furthermore, the actuating body 58 faces outwards, i. H. in FIGS. 1 and 2, ledges 60 and 61 leading downwards, the ends of which have outer thickenings 62 and 63.
  • the stroke of the actuating body 58 is thereby limited and by stops 64 and 65 on the inner wall of the threaded attachment 5.
  • grooves 50 and 51 and 52 and 53 running parallel to the image plane of FIGS. 1 and 2 are incorporated, the width of which is dimensioned perpendicular to the image surfaces such that the protruding parts of the hollow pins 39 and 40 are included therein Can move game.
  • the upper grooves 50, 51 form the first locking points and the lower grooves 52, 53 the second locking points.
  • Projections 54 and 55 are left between the grooves 50, 51 of the first latching points and the grooves 52, 53 of the second latching points and are thus aligned with the cylindrical inner wall of the housing 9.
  • the projections 54 and 55 are provided with inclined surfaces 56 and 57 which are inclined inwards.
  • the surfaces of the projections 54 and 55 which delimit the second locking points, that is to say the grooves 52 and 53 at the upper end, run perpendicular to the direction of displacement of the slide 26 and the sleeve 36.
  • the second locking points 52 and 53 are designed in accordance with the operating position according to FIG. 2 in such a way that they can only be unlocked by turning the push button 16 about its longitudinal axis.
  • An exemplary embodiment of this is shown in detail in FIGS. 3 to 9.
  • the second locking points 52, 53 in the cross section according to FIGS. 5 and 7 have crescent-shaped recesses 67 and 68 which are widened in the circumferential direction, so that the hollow pins 39 and 40 when the push button 16 is turned from the second locking points to the adjacent part of the cylindrical housing inner wall be pushed back into the sleeve 36 and the slide 26.
  • the crescent-shaped widened recesses 67 and 68 are expediently provided on the side of the grooves 52 and 53 so that the push button 16 can be turned clockwise in the operating position according to FIG. 2 if the locking is to be released.
  • a further groove 69 which extends in the direction of displacement is provided in the inner wall of the housing 9 and which is at an angle of approximately 90 ° to the grooves 50, 51 and 52, 53 is offset.
  • the groove is provided with an extension 70 trapezoidal, the transition from the extension 70 to the groove 69 being formed by an inclined surface 71 is.
  • a pin 72 is attached to the outside of the sleeve 36, which engages in the groove 69 or extension 70.
  • the operation of the actuator described above is essentially as follows. 1 is in the rest position, the thickened portions 62, 63 of the strips 60, 61 rest against the stop projections 64 and 65, so that the uppermost position of the moving parts is thus limited, despite a certain preload of the compression springs 31 and 32.
  • the hollow pins 39 and 40 are seated in the first latching position at the lower end of the grooves 50 and 51. If the push button 16 is now pressed down slightly from the position according to FIG. 1, the compression springs 31 and 32 become more or less strong compressed, and the slider 26 moves down accordingly.
  • the hollow pins 39, 40 are not necessarily taken along with the compression spring 41, so that the hollow pins 39, 40 and the sleeve 36 initially remain unchanged in the initial position. If the push button 16 is released after tapping or after a slight shift, so it returns to its original position without triggering or switching.
  • the stroke of the sleeve 36 and the actuating body 58 is limited by the stop projections 64 and 65, ie the shoulder surface 66 of the actuating body 58 then lies against these stop projections 64, 65 according to the position in FIG. 2.
  • the hollow pins 39, 40 can spread again by the action of the compression spring 41, so that they are in the second locking position at the upper end of the grooves 52, 53 according to FIG. 2.
  • a return of the moving parts and the push button 16, which indicates in this position that the switching process has taken place, can be done neither by pressing again or by pulling back the push button, since the hollow pins on the described lower surfaces of the projections 54 and extending perpendicular to the direction of displacement 55 concerns.
  • the extent of the rotary movement of the push button 16 is limited by the width of the extension 70 and by the stop of the pin 72 on the two vertical surfaces of the extension 70. If you let go of the push button at the position of the hollow pins 39, 40 and the pin 72 according to FIGS. 7 and 8, it can move upwards again with the slide and the sleeve, the pin 72 sliding along the inclined surface 71 and a turning back to the original position causes (Fig. 4). During this return movement, the rounded heads of the hollow pins 39, 40 slide as indicated in FIG. 9 in the direction of the arrow on the cylindrical inner wall of the housing 9 until they can snap back into the first latching positions at the lower end of the slots 50 and 51.
  • the ring extension 30 explained above not only has the task of separating the ends of the compression springs 31 and 32 from one another or intervening between them, but rather this ring extension has the following essential meaning. If it should happen that one or the other compression spring 31 or 32 jams, decreases in spring force or even breaks, the actuating attachment according to the invention does not become ineffective, rather the ring extension 30 then comes into effect in such a way that it has its free end at the end when pressing the push button hits the upper end face of the sleeve 36 in the drawing and forcibly drives it downward, so that the switch-off takes place in any case, for example, in the case of an emergency-off switch.

Landscapes

  • Push-Button Switches (AREA)
  • Alarm Systems (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Switches With Compound Operations (AREA)
  • Control Of Electric Motors In General (AREA)
  • Automatic Cycles, And Cycles In General (AREA)
  • Control Of High-Frequency Heating Circuits (AREA)

Abstract

1. Actuating attachment for electrical control and indicating devices, in particular emergency switches, with a locking device for the operating position, in which case a slide (26) is arranged to slide by means of a push button (16) in the device housing (9), the slide (26) also being surrounded by a slide part (36), in which opposing locking pins (39, 40) which are under spring pressure are held in transverse bores (37, 38), each locking pin (39, 40) co-operating with two locking points (50, 51, 52, 53) located in the sliding direction at a distance apart on both sides of a projection (54, 55) respectively and the projection on the side corresponding to the inoperative position comprising an inclined surface (56, 57), an outer compression spring (31) being located between the push button and the end face of the housing (9) and an inner compression spring (32) being located between the push button and the sliding member (36) and the push button (16) being connected to the slide (26), in which case furthermore the second locking points (52, 53) are constructed to correspond to the operating position so that unlocking only takes place by rotating the push button (16), about its longitudinal axis, characterised in that the sliding member is constructed as a cylindrical sleeve (36), which is seated in a sliding manner on the part of the slide (26) likewise constructed cylindrically, that the slide (26) comprises opposing, flattened guide surfaces (43, 44) on the periphery and the inner surface of the sleeve (36)with corresponding flat portions is adapted to the slide part, that the slide (26) comprises an opening (42) enlarged in the sliding direction, that the bores (37, 38) for receiving the locking pins (39, 40) in the sleeve (36) are constructed continuously and the locking pins (39, 40) constructed as hollow pins with outer ends rounded-off in the form of a hemisphere are so long that they project partly into the enlarged opening (42) of the slide (26) and are guided to move therein, that solely two hollow pins (39, 40) are provided, in which a single compression spring (41) engages by its ends, that the second locking points (52, 53, 67, 68) have a part of crescent-shaped cross-section, so that on rotating the push button (16), the hollow pins (39, 40) are pushed back continuously from the locking point into the bores (37, 38) of the sleeve (36) and the opening (42) of the slide (26) and that adjoining the end of the sleeve (36) remote from the push button (16) is an actuating member (58) able to move in the sliding direction, which is limited in its stroke by stops (62, 63, 64, 65).

Description

Die Erfindung bezieht sich auf einen Betätigungsvorsatz für elektrische Befehls- und Meldegeräte, insbesondere Not-Aus-Schalter, mit einer Verriegelungsvorrichtung für die Betriebsstellung, wobei ein Schieber mittels eines Druckknopfes verschiebbar im Gerätegehäuse angeordnet ist, wobei ferner der Schieber von einem Verschiebekörper umgeben ist, in welchem in querverlaufenden Bohrungen unter Federdruck stehende, einander gegenüberliegende Verriegelungsstifte gehalten sind, wobei jeder Verriegelungsstift mit zwei in Verschieberichtung mit Abstand voneinander zu beiden Seiten je eines Vorsprunges befindlichen Raststellen zusammenwirkt und der Vorsprung auf der der Ruhestellung entsprechenden Seite eine Schrägfläch'e aufweist, wobei ausserdem zwischen dem Druckknopf und der Stirnfläche des Gehäuses eine äussere Druckfeder und zwischen dem Druckknopf und dem Verschiebekörper eine innere Druckfeder angeordnet sind und der Druckknopf mit dem Schieber verbunden ist, wobei weiterhin die zweiten Raststellen entsprechend der Betriebsstellung derart ausgebildet sind, dass eine Entriegelung nur durch Drehen des Druckknopfes um seine Längsachse erfolgt.The invention relates to an actuating attachment for electrical command and signaling devices, in particular emergency stop switches, with a locking device for the operating position, a slide being arranged displaceably in the device housing by means of a push button, the slide also being surrounded by a sliding body, in which opposite locking pins are held in transverse bores under spring pressure, each locking pin cooperating with two locking points located in the direction of displacement at a distance from each other on each side of a projection and the projection on the side corresponding to the rest position has an inclined surface, whereby in addition, an outer pressure spring is arranged between the push button and the end face of the housing and an inner pressure spring is arranged between the push button and the displacement body and the push button is connected to the slide, the second being furthermore n Locking points are designed in accordance with the operating position in such a way that unlocking takes place only by turning the push button around its longitudinal axis.

Ein Betätigungsvorsatz der zuvor genannten Art ist aus der FR-A-2521768 bekannt. Bei diesem Gerät ist der innere Schieber am unteren Ende mit einem Körper versehen, welcher Stifte in einer ersten Verriegelungsstellung festhält. Es genügt bereits ein Verschieben um einen sehr kleinen Weg, um die Stifte freizugeben und eine Auslösung zu bewirken. Da- vielfach Auslösungen, wie die Praxis beweist, durch reines Versehen und völlig unerwünscht erfolgen, kann es bei dem bekannten Gerät zu ungewünschten Störungen kommen. Denn bei dem Gerät sind zwei Paare von Verriegelungsstiften vorgesehen, um gewollte Auslösevorgänge und durch zufälliges Berühren verursachte Schaltungen durch unterschiedliche Verriegelungsstellungen anhand eines Anzeigeringes unterscheiden zu können.An actuator of the aforementioned type is known from FR-A-2521768. In this device, the inner slide is provided at the lower end with a body that holds pins in a first locking position. It is enough to move it a very small way to release the pins and trigger them. Since tripping, as practice has shown, is due to mere oversight and is completely undesirable, undesirable malfunctions can occur in the known device. This is because the device has two pairs of locking pins in order to be able to distinguish between deliberate tripping processes and circuits caused by accidental contact by means of different locking positions using a display ring.

Eine andere Konstruktion eines Betätigungsvorsatzes für einen Druckknopftastschalter ist aus DE-A-3207725 bekannt. Hierbei besitzt der Schieber einen Durchbruch in Form einer Querbohrung, in welcher sich zwei Rastkugeln befinden, die durch eine Rastfeder diametral in am Gehäuse vorgesehene Rastmulden auseinandergedrückt werden. Zwischen dem Schieber und dem Gehäuse einerseits und dem Schieber und dem Druckknopf andererseits sind Druckfedern derart eingesetzt, dass sie stets versuchen, den Schieber samt dem Druckknopf von der ersten Raststellung zu der zweiten Raststellung entsprechend der Betriebsstellung zu verschieben. Es genügt also hier ein leichter Druck auf den Druckknopf, um die Kugeln aus den ersten Rastmulden freizugeben, so dass dann der Schieber durch eine vorgespannte Kraftspeicherfeder schlagartig verschoben wird, bis die Kugeln in die Rastmulden der Betriebs-Raststellung einrasten. Zum Zurückschlalten in die Ruhestellung wird der Druckknopf in axialer Richtung entgegen der Kraft der beiden Federn zurückgezogen, bis die Kugeln wieder in die Rastmulden der ersten Raststellung eingreifen. Die Vorrichtung ist ausdrücklich so ausgebildet, dass sie unter Vermeidung einer Drehbetätigung des Druckknopfes überlistungssicher sein soll, und zwar dadruch, dass der Schaltvorgang durch Niederdrücken des Druckknopfes lediglich ausgelöst wird, wonach dann der Schaltvorgang von aussen völlig unbeeinflussbar ablaufen soll.Another construction of an actuator for a push button switch is known from DE-A-3207725. Here, the slide has an opening in the form of a transverse bore in which there are two locking balls, which are pressed apart diametrically by a locking spring into the locking recesses provided on the housing. Pressure springs are inserted between the slide and the housing on the one hand and the slide and the push button on the other hand in such a way that they always try to move the slide together with the push button from the first locking position to the second locking position in accordance with the operating position. It is therefore sufficient to press the push button slightly to release the balls from the first locking troughs, so that the slide is then suddenly moved by a preloaded energy storage spring until the balls snap into the locking troughs of the operating locking position. To switch back to the rest position, the push button is withdrawn in the axial direction against the force of the two springs until the balls engage again in the locking troughs of the first locking position. The device is expressly designed in such a way that it should be tamper-proof while avoiding a rotary actuation of the push button, namely that the switching operation is only triggered by pressing the push button, after which the switching operation should then take place completely uninfluenced from the outside.

Des weiteren ist aus der DE-A-3113034 eine Verriegelungsvorrichtung für Schutzschalter bekannt, die ein unbewusstes Wiedereinschalten des Schutzschalters verhindert und erkennen lässt, ob der Schutzschalter selbst ausgelöst hat oder über die Not-Aus-Taste betätigt wurde. Zu diesem Zweck ist quer zur Bewegungsrichtung des Antriebsstössels eine besondere Konstruktion eines Sperrschiebers vorgesehen. Der Sperrschieber verhindert ein Wiedereinschalten des Schutzschalters. Zum Wiedereinschalten ist es erforderlich, eine Antriebstaste in die Ausgangsstellung zu bewegen.Furthermore, a locking device for circuit breakers is known from DE-A-3113034, which prevents the circuit breaker from being unintentionally switched on again and shows whether the circuit breaker has triggered itself or has been actuated via the emergency stop button. For this purpose, a special construction of a locking slide is provided transversely to the direction of movement of the drive plunger. The locking slide prevents the circuit breaker from being switched on again. To switch it on again, it is necessary to move a drive button to the starting position.

Bei diesen bekannten Vorrichtungen ist es zwar möglich, die Betriebsstellung" also die Stellung nach dem Betätigen einer Drucktaste vorübergehend zu verriegeln, jedoch haben diese bekannten Konstruktionen mit weiteren auf dem Markt befindlichen Betätigungsvorsätzen gemeinsam, dass das Auslösen aus der Ruhestellung, z. B. das Not-Aus-Schalten, bereits durch leichtes Antippen oder Berühren erfolgt. Es hat sich in der Praxis immer wieder gezeigt, dass das Auslösen vielfach völlig unbeabsichtigt und oftmals auch unbemerkt erfolgte, z. B. beim Vorbeigehen einer Person und Berühren mit einem Kleidungsstück oder durch unvorsichtiges Anlehnen an eine Schalttafel, an der das betreffende Gerät montiert ist oder durch sonstige unbeabsichtigten Vorgänge und Handlungen.In these known devices, it is possible to temporarily lock the operating position, ie the position after pressing a pushbutton, but these known constructions have in common with other actuating attachments on the market that triggering from the rest position, e.g. Emergency switching off, already done by lightly tapping or touching. It has been shown in practice time and again that the triggering was often completely unintentional and often also went unnoticed, for example when a person walks past and touches with a piece of clothing or by carelessly leaning against a control panel on which the device in question is mounted or by other unintentional processes and actions.

Demgegenüber liegt der Erfindung die Aufgabe zugrunde, einen Betätigungsvorsatz zu schaffen, der nur durch einen bewusst kräftigen Druck auf den Druckknopf und Verschieben des Druckknopfes über einen verhältnismässig grossen Weg ri;e Auslösung bewirkt, welcher auch die Betriebsstellung verriegelt und nach aussen kenntlich macht und bei welchen das Zurückführen in die Ruhestellung nur durch eine nicht ohne weiteres naheliegende Betätigung möglich ist.In contrast, the invention has for its object to provide an actuator that only by a deliberately strong pressure on the push button and moving the push button over a relatively large way ri; e triggers, which also locks the operating position and identifies it to the outside and at which the return to the rest position is only possible by an operation that is not immediately obvious.

Die gestellte Aufgabe wird erfindungsgemass dadurch gelöst, dass der Verschiebekörper als zylindrische Hülse ausgebildet ist, die gleitend auf dem ebenfalls zylindrisch ausgebildeten Teil des Schiebers sitzt, dass der Schieber auf dem Umfang einander gegenüberliegende abgeflachte Führungsflächen aufweist und die Innenfläche der Hülse mit entsprechenden Abflachungen dem Schieberteil angepasst ist, dass der Schieber einen in Verschieberichtung verbreiterten Durchbruch aufweist, dass die Bohrungen für die Aufnahme der Verriegelungsstifte in der Hülse durchgehend ausgebildet und die als Hohlstifte mit halbkugelig abgerundeten äusseren Enden ausgebildeten Verriegelungsstifte so lang bemessen sind, dass sie teilweise in den verbreiterten Durchbruch des Schiebers ragen und hierin beweglich geführt sind, dass ausschliesslich zwei Hohlstifte vorhanden sind, in die eine einzige Druckfeder mit ihren Enden eingreift, dass die zweiten Raststellen einen im Querschnitt sichelförmigen Teil aufweisen, so dass die Hohlstifte beim Drehen des Druckknopfes kontinuierlich aus der Raststelle in die Bohrungen der Hülse und den Durchbruch des Schiebers zurückgedrückt werden, und dass sich an das von dem Druckknopf abliegende Ende der Hülse ein in Verschieberichtung verschiebbarer Betätigungskörper anschliesst, der durch Anschläge in seinem Hub begrenzt ist.The object is achieved according to the invention in that the sliding body is designed as a cylindrical sleeve which slidably sits on the likewise cylindrical part of the slide, that the slide has flattened guide surfaces on the circumference opposite one another and the inner surface of the sleeve with corresponding flats on the slide part is adapted that the slide has an opening widened in the direction of displacement, that the bores for receiving the locking pins in the sleeve are continuous and the locking pins, which are designed as hollow pins with hemispherically rounded outer ends, are so long are that they partially protrude into the widened opening of the slide and are movably guided therein, that there are only two hollow pins in which a single compression spring engages with their ends, that the second locking points have a part that is sickle-shaped in cross section, so that the hollow pins when the pushbutton is turned, it is pressed continuously out of the locking position into the bores of the sleeve and the opening of the slide, and that an actuating body which is displaceable in the direction of displacement and is limited by stops in its stroke is connected to the end of the sleeve which is remote from the pushbutton.

Auf diese Weise wird erreicht, dass durch einfaches Antippen oder Berühren bzw. leichtes Eindrücken des Druckknopfes keine Auslösung erfolgt, dass der Druckknopf vielmehr in seine Ruhelage zurückgehen kann. Nur durch kräftigen Druck auf den Druckknopf und Überwindung eines deutlichen Widerstandes erfolgt die Auslösung, und zwar schlagartig. Die Verriegelung in der Betriebsstellung erfolgt mit einfachen technischen Mitteln, ist aber sehr sicher und nur durch Drehen des Druckknopfes wieder aufzuheben.In this way it is achieved that simply tapping or touching or gently pressing the push button does not trigger, that the push button can rather return to its rest position. Only by pressing the push button vigorously and overcoming a significant resistance does the release occur, and suddenly. The locking in the operating position is done with simple technical means, but is very safe and can only be canceled by turning the push button.

Vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den abhängigen Ansprüchen.Advantageous embodiments of the invention result from the dependent claims.

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung im Schema dargestellt, und zwar zeigen:

  • Figur 1 einen Längsschnitt durch einen Betätigungsvorsatz in Ruhestellung,
  • Figur 2 einen Längsschnitt gemäss Figur 1, jedoch in Betriebsstellung,
  • Figur 3 einen vereinfachten Querschnitt gemäss Schnittlinie 111-111 in Figur 1,
  • Figur 4 einen Teillängsschnitt gemäss Schnittlinie IV-IV in Figur 3,
  • Figur 5 einen vereinfachten Querschnitt gemäss Schnittlinie V-V in Figur 4,
  • Figur 6 einen Teillängsschnitt entsprechend Figur 4 und Schnittlinie VI-VI in Figur 5 mit Darstellung einer anderen Stellung,
  • Figur 7 einen vereinfachten Querschnitt entsprechend Figur 5, jedoch in einer anderen Stellung,
  • Figur 8 einen Teillängsschnitt gemäss Schnittlinie VIII-VIII in Figur 7 und
  • Figur 9 einen Teillängsschnitt gemäss Schnittlinie IX-IX in Figur 8.
In the drawing, an embodiment of the invention is shown in the diagram, namely:
  • FIG. 1 shows a longitudinal section through an actuating attachment in the rest position,
  • FIG. 2 shows a longitudinal section according to FIG. 1, but in the operating position,
  • FIG. 3 shows a simplified cross section according to section line 111-111 in FIG. 1,
  • FIG. 4 shows a partial longitudinal section according to section line IV-IV in FIG. 3,
  • FIG. 5 shows a simplified cross section according to section line VV in FIG. 4,
  • FIG. 6 shows a partial longitudinal section corresponding to FIG. 4 and section line VI-VI in FIG. 5, showing another position,
  • FIG. 7 shows a simplified cross section corresponding to FIG. 5, but in a different position,
  • 8 shows a partial longitudinal section along section line VIII-VIII in Figure 7 and
  • 9 shows a partial longitudinal section along section line IX-IX in FIG. 8.

Der nachfolgend erläuterte Betätigungsvorsatz ist bei dem in den Figuren 1 und 2 dargestellten Ausführungsbeispiel an einer Montageplatte 1 montiert, welche ein Loch 2 aufweist, durch welches das in der Zeichnung untere Teil des Betätigungsvorsatzes hindurchgesteckt werden kann, und zwar ein Gewindeansatz 5 und ein zylindrischer Ansatz 8, der mit seinem äusseren Flansch aussen auf der Montageplatte 1 anliegt. Die Befestigung erfolgt gegebenenfall unter Zwischenschaltung einer Unterlegscheibe 3 mittels einer Mutter 4, die auf dem Gewindeansatz 5 aufgeschraubt ist. Der Flansch des zylindrischen Ansatzes 8 wird von einem Kragen 6 des Gewindeansatzes 5 überdeckt. An diesem Kragen liegt der Gehäuseboden 7 des Gehäuses 9 an. Der in der Zeichnung untere Teil des Gehäuses 9 wird von einem zylindrischen Mantel 73 überdeckt, der nach unten hin in ein in Draufsicht quadratisches oder auch rundes Teil 74 übergeht. Der Flansch des zylindrischen Ansatzes 8 und der Kragen 6 sind entsprechend quadratisch oder rund angepasst. Etwa in mittlerer Höhe des Gehäuses 9 ist auf dem Umfang eine umlaufende Nut 10 vorgesehen, in welche ein Ringwulst 11 am unteren Rand einer flexiblen Dichtungshaube 12 eingespannt ist. Der andere obere Rand 13 der Dichtungshaube 12 ist in einer Ringnut 14 eines inneren zylindrischen Ansatzes 15 eines Druckknopfes 16 befestigt, so dass die flexible, beispielsweise aus Gummi bestehende Dichtungshaube sämtliche nachfolgend erläuterte beweglichen Teile des Betätigungsvorsatzes nach aussen staubsicher abschliesst. Auf der Innenseite des Druckknopfes 16 ist zwischen dem Ansatz 15 und einem leicht konischen nach unten verlängerten Rand 17 des Druckknopfes ein Hohlraum 23 zur Aufnahme eines Teiles der Dichtungshaube 12 vorgesehen, insbesondere für die Betriebsstellung des Betätigungsvorsatzes, wie aus Fig. 2 zu ersehen ist. Auf der äusseren Stirnfläche des Druckknopfes 16 ist eine Anzeigeplatte 20, vorzugsweise eine rote Platte eines Not-Aus-Schalters, vorgesehen, die mit Rastvorsprüngen 21 und 22 versehen ist, welche ihrerseits in Aussparungen 18 und 19 eingreifen. Die Anzeigeplatte 20 ist somit auch auswechselbar.The actuating attachment explained below is mounted in the exemplary embodiment shown in FIGS. 1 and 2 on a mounting plate 1 which has a hole 2 through which the lower part of the actuating attachment, which is shown in the drawing, can be inserted, namely a threaded attachment 5 and a cylindrical attachment 8, which rests with its outer flange on the mounting plate 1. The attachment is optionally carried out with the interposition of a washer 3 by means of a nut 4 which is screwed onto the threaded attachment 5. The flange of the cylindrical extension 8 is covered by a collar 6 of the threaded extension 5. The housing base 7 of the housing 9 bears against this collar. The lower part of the housing 9 in the drawing is covered by a cylindrical jacket 73 which merges downwards into a part 74 which is square or round in plan view. The flange of the cylindrical extension 8 and the collar 6 are adjusted accordingly square or round. Around the middle height of the housing 9, a circumferential groove 10 is provided on the circumference, into which an annular bead 11 is clamped at the lower edge of a flexible sealing hood 12. The other upper edge 13 of the sealing hood 12 is fastened in an annular groove 14 of an inner cylindrical extension 15 of a push button 16, so that the flexible sealing hood, for example made of rubber, closes off all the moving parts of the actuating attachment explained below in a dust-proof manner to the outside. On the inside of the push button 16, a cavity 23 for receiving a part of the sealing hood 12 is provided between the projection 15 and a slightly conical downwardly extended edge 17 of the push button, in particular for the operating position of the actuating attachment, as can be seen from FIG. 2. On the outer end face of the push button 16, a display plate 20, preferably a red plate of an emergency stop switch, is provided, which is provided with locking projections 21 and 22, which in turn engage in recesses 18 and 19. The display plate 20 is thus also interchangeable.

Der Druckknopf 16 weist eine zentrale Bohrung 24 auf, durch welche eine Schraube 25 hindurchgeführt und in einer Gewindebohrung 28 im Kopf 27 eines Schiebers 26 eingeschraubt ist, so dass der Druckknopf 16 fest mit dem Schieber 26 verbunden ist und gleichzeitig der obere Rand 13 der Dichtungshaube dichtend eingespannt ist, und zwar zwischen dem zylindrischen Ansatz 15 des Druckknopfes und der oberen Schulter 29 des Kopfes 27 des Schiebers 26.The push button 16 has a central bore 24, through which a screw 25 is passed and screwed into a threaded bore 28 in the head 27 of a slide 26, so that the push button 16 is firmly connected to the slide 26 and at the same time the upper edge 13 of the sealing hood is tightly clamped, namely between the cylindrical extension 15 of the push button and the upper shoulder 29 of the head 27 of the slide 26th

Der Schieber 26 ist von einer verschiebbaren, auf dem äusseren Umfang zylindrischen Hülse 26 umgeben, und zwar im wesentlichen auf dem unteren hälftigen Teil des Schiebers, wie aus den Figuren 1 und 2 zu ersehen ist. Zwischen dem Kopf 27 des Schiebers 26, genauer gesagt zwischen einer Führungsaussparung am Rand der Schulter 29, und der Stirnfläche 33 des Gehäuses 9 ist eine äussere Druckfeder 31 eingesetzt. Eine weitere innere Druckfeder 32 befindet sich zwischen der Schulter 29 des Kopfes 27 des Schiebers 26 einerseits und der in der Zeichnung oberen Stirnfläche der Hülse 36, wobei zur besseren Halterung des unteren Endes der inneren Druckfeder 32 in dieser Stirnfläche der Hülse 36 eine ringförmige Aussparung 35 eingearbeitet ist. Zur besseren Führung des unteren Endes der äusseren Druckfeder 31 dient der Führungsrand 34 des Gehäuses 9, welcher über der oberen Stirnfläche 33 etwas vorragt. Die sich am Kopf 27 des Schiebers 26 abstützenden Enden der Druckfedern 31 und 32 sind von einem Ringfortsatz 30 voneinander getrennt, der ebenfalls zu einer Verbesserung der Halterung der Druckfedern beiträgt.The slide 26 is surrounded by a displaceable sleeve 26 which is cylindrical on the outer circumference, essentially on the lower half of the slide, as can be seen from FIGS. 1 and 2. An outer compression spring 31 is inserted between the head 27 of the slide 26, more precisely between a guide recess on the edge of the shoulder 29, and the end face 33 of the housing 9. Another inner compression spring 32 is located between the shoulder 29 of the head 27 of the slide 26 on the one hand and the upper end face of the sleeve 36 in the drawing, an annular recess 35 being provided in this end face of the sleeve 36 for better holding of the lower end of the inner compression spring 32 is incorporated. For better guidance of the lower end of the outer compression spring 31, the guide edge 34 of the housing 9, which protrudes somewhat above the upper end face 33, is used. The ends of the compression springs 31 and 32 which are supported on the head 27 of the slide 26 are separated from one another by an annular extension 30, which likewise contributes to an improvement in the mounting of the compression springs.

Die Hülse 36 weist zwei einander gegenüberliegende Querbohrungen 37 und 38 auf, durch welche je ein Hohlstift 39 und 40 hindurchgreifen kann. Diese Hohlstifte dienen, wie weiter unten näher erläutert wird, als Verriegelungselemente. Die Hohlstifte 39, 40 sind an ihren äusseren Enden halbkugelig abgerundet. Sie werden mittels einer Druckfeder 41 ständig nach aussen gedrückt bzw. voneinander gespreizt, wobei die Druckfeder mit ihren Enden wie gezeichnet in die Hohlstifte eingreift. Die Hohlstifte 39 und 40 sind so lang bemessen, dass sie mit ihren inneren Enden zum Teil noch in einen Durchbruch 42 des Schiebers 26 wie dargestellt eingreifen. Sie dürfen aber nur so lang bemessen sein, dass sie in einwärts gedrücktem Zustand entgegen der Kraft der Druckfeder 41 mit ihren inneren Stirnseiten nicht aufeinander treffen. Der Durchbruch 42 des Schiebers 26 ist in Verschieberichtung verbreitert ausgeführt, in den Stellungen nach Fig. 1 und 2 also nach oben hin, während die Breite des Durchbruches senkrecht zu den Bildebenen der Figuren 1 und 2 so bemessen ist, dass die Hohlstifte 39 und 40 frei beweglich geführt sind.The sleeve 36 has two mutually opposite transverse bores 37 and 38, through which a hollow pin 39 and 40 can reach. As will be explained in more detail below, these hollow pins serve as locking elements. The hollow pins 39, 40 are rounded at their outer ends in a hemisphere. They are constantly pressed outwards or spread apart from one another by means of a compression spring 41, the ends of the compression spring engaging in the hollow pins as shown. The hollow pins 39 and 40 are dimensioned so long that their inner ends still partially engage in an opening 42 in the slide 26 as shown. However, they may only be dimensioned so long that they do not meet with their inner end faces against the force of the compression spring 41 in the pressed-in state. The opening 42 of the slide 26 is widened in the direction of displacement, that is to say upwards in the positions according to FIGS. 1 and 2, while the width of the opening is dimensioned perpendicular to the image planes of FIGS. 1 and 2 such that the hollow pins 39 and 40 are freely movable.

Der im wesentlichen zylindrisch ausgebildete Schieber 26 weist auf einem Teil seines Umfanges einander gegenüberliegende abgeflachte Führungsflächen 43 und 44 auf, die senkrecht zu den Bildebenen der Figuren 1 und 2 verlaufen. Die inneren Flächen 45 und 46 der Hülse 36 sind entsprechend ebenflächig ausgebildet, so dass diese Flächen aufeinandergleiten, vor allem aber eine Drehsicherung zwischen Schieber 26 und Hülse 36 ergeben, so dass nur eine Gleitbewegung in Verschieberichtung zwischen Schieber und Hülse möglich ist, nicht aber ein gegenseitiges Verschieben in einer Drehrichtung um die Längsachse.The essentially cylindrical slide 26 has flattened guide surfaces 43 and 44 on part of its circumference, which run perpendicular to the image planes of FIGS. 1 and 2. The inner surfaces 45 and 46 of the sleeve 36 are correspondingly planar, so that these surfaces slide on one another, but above all provide a rotation lock between the slide 26 and sleeve 36, so that only a sliding movement in the direction of displacement between the slide and sleeve is possible, but not one mutual displacement in a direction of rotation about the longitudinal axis.

Am unteren Ende des Schiebers 26 ist ein topfartiges Halteelement 47 mit einem Führungszylinder 48 mittels einer zentralen Schraube 49 festgeschraubt. Hierdurch wird ein Betätigungskörper 58 gehalten, der an seiner oberen Stirnseite einen äusseren vorstehenden Führungsrand 59 für das untere Ende der Hülse 36 besitzt. Ferner weist der Betätigungskörper 58 nach aussen, d. h. in den Figuren 1 und 2 nach unten führende Leisten 60 und 61 auf, deren Enden äussere Verdickungen 62 und 63 besitzen. Der Hub des Betätigungskörpers 58 wird hierdurch und durch Anschläge 64 und 65 auf der Innenwand des Gewindeansatzes 5 begrenzt.At the lower end of the slide 26, a pot-like holding element 47 with a guide cylinder 48 is screwed tight by means of a central screw 49. As a result, an actuating body 58 is held, which has an outer projecting guide edge 59 for the lower end of the sleeve 36 on its upper end face. Furthermore, the actuating body 58 faces outwards, i. H. in FIGS. 1 and 2, ledges 60 and 61 leading downwards, the ends of which have outer thickenings 62 and 63. The stroke of the actuating body 58 is thereby limited and by stops 64 and 65 on the inner wall of the threaded attachment 5.

In die ansonsten zylindrische Innenwand des Gehäuses 9 sind parallel zur Bildebene der Figuren 1 und 2 verlaufende Rillen 50 und 51 sowie 52 und 53 eingearbeitet, deren Breite senkrecht zu den Bildflächen so bemessen ist, dass sich die hineinragenden Teile der Hohlstifte 39 und 40 hierin mit Spiel bewegen können. Die oberen Rillen 50, 51 bilden die ersten Raststellen und die unteren Rillen 52, 53 die zweiten Raststellen. Zwischen den Rillen 50, 51 der ersten Raststellen und den Rillen 52, 53 der zweiten Raststellen sind Vorsprünge 54 und 55 belassen, die somit mit der zylindrischen Innenwand des Gehäuses 9 fluchten. Nach den Rillen 50 und 51 zu sind die Vorsprünge 54 und 55 mit nach innen geneigten Schrägflächen 56 und 57 versehen. Die die zweiten Raststellen, also die Rillen 52 und 53 am oberen Ende, begrenzenden Flächen der Vorsprünge 54 und 55 verlaufen senkrecht zur Verschieberichtung des Schiebers 26 und der Hülse 36.In the otherwise cylindrical inner wall of the housing 9, grooves 50 and 51 and 52 and 53 running parallel to the image plane of FIGS. 1 and 2 are incorporated, the width of which is dimensioned perpendicular to the image surfaces such that the protruding parts of the hollow pins 39 and 40 are included therein Can move game. The upper grooves 50, 51 form the first locking points and the lower grooves 52, 53 the second locking points. Projections 54 and 55 are left between the grooves 50, 51 of the first latching points and the grooves 52, 53 of the second latching points and are thus aligned with the cylindrical inner wall of the housing 9. After the grooves 50 and 51, the projections 54 and 55 are provided with inclined surfaces 56 and 57 which are inclined inwards. The surfaces of the projections 54 and 55 which delimit the second locking points, that is to say the grooves 52 and 53 at the upper end, run perpendicular to the direction of displacement of the slide 26 and the sleeve 36.

Die zweiten Raststellen 52 und 53 sind entsprechend der Betriebsstellung gemäss Figur 2 derart ausgebildet, dass eine Entriegelung nur durch Drehen des Druckknopfes 16 um seine Längsachse erfolgen kann. Ein Ausführungsbeispiel hierfür ist in den Figuren 3 bis 9 im einzelnen dargestellt. Danach weisen die zweiten Raststellen 52, 53 im Querschnitt nach den Figuren 5 und 7 dargestellte sichelförmige in Umfangsrichtung verbreiterte Ausnehmungen 67 und 68 auf, so dass die Hohlstifte 39 und 40 beim Drehen des Druckknopfes 16 aus den zweiten Räststellen bis zum benachbarten Teil der zylindrischen Gehäuseinnenwand in die Hülse 36 und den Schieber 26 zurückgedrückt werden. Die sichelförmig verbreiterten Ausnehmungen 67 und 68 sind zweckmässigerweise nach der Seite der Rillen 52 und 53 vorgesehen, dass ein Drehen des Druckknopfes 16 in der Betriebsstellung gemäss Fig. 2 im Uhrzeigersinne erfolgen kann, wenn die Verriegelung aufgehoben werden soll.The second locking points 52 and 53 are designed in accordance with the operating position according to FIG. 2 in such a way that they can only be unlocked by turning the push button 16 about its longitudinal axis. An exemplary embodiment of this is shown in detail in FIGS. 3 to 9. Thereafter, the second locking points 52, 53 in the cross section according to FIGS. 5 and 7 have crescent-shaped recesses 67 and 68 which are widened in the circumferential direction, so that the hollow pins 39 and 40 when the push button 16 is turned from the second locking points to the adjacent part of the cylindrical housing inner wall be pushed back into the sleeve 36 and the slide 26. The crescent-shaped widened recesses 67 and 68 are expediently provided on the side of the grooves 52 and 53 so that the push button 16 can be turned clockwise in the operating position according to FIG. 2 if the locking is to be released.

Wie insbesondere aus den Figuren 4, 6, 8 und 9 zu ersehen ist, ist in der Innenwand des Gehäuses 9 eine weitere in Verschieberichtung verlaufende Rille 69 vorgesehen, die um einen Winkel von etwa 90° zu den Rillen 50, 51 und 52, 53 versetzt ist. In dem Bereich, der etwa den zweiten Raststellen mit den Rillen 52 und 53 sowie den Erweiterungen 67 und 68 entspricht, ist die Rille einseitig trapezförmig mit einer Erweiterung 70 versehen, wobei der Übergang von der Erweiterung 70 auf die Rille 69 durch eine Schrägfläche 71 gebildet ist. In Höhe der Hohlstifte 39 und 40 und ebenfalls um 90° auf dem Umfang versetzt ist aussen an der Hülse 36 ein Zapfen 72 befestigt, welcher in die Rille 69 bzw. Erweiterung 70 eingreift.As can be seen in particular from FIGS. 4, 6, 8 and 9, a further groove 69 which extends in the direction of displacement is provided in the inner wall of the housing 9 and which is at an angle of approximately 90 ° to the grooves 50, 51 and 52, 53 is offset. In the area that corresponds approximately to the second locking points with the grooves 52 and 53 and the extensions 67 and 68, the groove is provided with an extension 70 trapezoidal, the transition from the extension 70 to the groove 69 being formed by an inclined surface 71 is. At the height of the hollow pins 39 and 40 and also offset by 90 ° on the circumference, a pin 72 is attached to the outside of the sleeve 36, which engages in the groove 69 or extension 70.

Die Wirkungsweise des oben erläuterten Betätigungsvorsatzes ist im wesentlichen folgende. Wenn sich der Betätigungsvorsatz gemäss Fig. 1 in Ruhestellung befindet, liegen die Verdickungen 62, 63 der Leisten 60, 61 an den Anschlagvorsprüngen 64 und 65 an, so dass damit die oberste Stellung der beweglichen Teile begrenzt ist, trotz einer gewissen Vorspannung der Druckfedern 31 und 32. Die Hohlstifte 39 und 40 sitzen in der ersten Raststellung am unteren Ende der Rillen 50 und 51. Wenn man nun den Druckknopf 16 aus der Stellung gemäss Fig. 1 leicht nach unten drückt, werden die Druckfedern 31 und 32 mehr oder weniger stark zusammengedrückt, und der Schieber 26 verschiebt sich entsprechend nach unten. Infolge des verbreiterten Durchbruches 42 werden die Hohlstifte 39, 40 mit der Druckfeder 41 nicht zwangsweise mitgenommen, so dass die Hohlstifte 39, 40 und die Hülse 36 zunächst unverändert in der Anfangsstellung verbleiben. Wird der Druckknopf 16 nach dem Antippen oder nach einem geringen Verschieben wieder losgelassen, so kehrt er in die Ursprungslage zurück, ohne dass eine Auslösung bzw. irgendein Schaltvorgang stattgefunden hat. Erst wenn der Druckknopf 16 so stark und bewusst eingedrückt wird, dass sich nicht nur die äussere Druckfeder 31, sondern vor allem auch die innere Druckfeder 32 so stark zusammengedrückt haben, dass die Hohlstifte 39, 40 an den Schrägflächen 56, 57 soweit nach innen gedrückt werden, dass sich die abgerundeten Köpfe der Hohlstifte vollständig innerhalb der Hülse 36 befinden, verschiebt die innere Druckfeder 32 infolge der starken Spannung die Hülse 36 schlagartig nach unten, womit auch der Betätigungskörper 58 mit den Leisten 60 und 61 schlagartig nach unten bewegt wird. Die letzteren stehen mit dem eigentlichen nicht gezeichneten Schaltgerät in Verbindung, so dass damit die schlagartige Schaltung bzw. Auslösung des elektrischen Schalters erfolgt. Der Hub der Hülse 36 und des Betätigungskörpers 58 ist durch die Anschlagvorsprünge 64 und 65 begrenzt, d. h., die Absatzfläche 66 des Betätigungskörpers 58 liegt dann gemäss der Stellung nach Fig. 2 an diesen Anschlagvorsprüngen 64, 65 an. Nach Überwindung der Vorsprünge 54 und 55 zwischen den beiden Raststellungen können sich die Hohlstifte 39, 40 durch Wirkung der Druckfeder 41 wieder spreizen, so dass die sich in der zweiten Raststellung am oberen Ende der Rillen 52, 53 gemäss Fig. 2 befinden. Ein Zurückführen der bewegten Teile und des Druckknopfes 16, der in dieser Stellung anzeigt, dass der Schaltvorgang stattgefunden hat, kann weder durch erneutes Drücken noch durch Zurückziehen des Druckknopfes erfolgen, da die Hohlstifte an den beschriebenen unteren senkrecht zur Verschieberichtung verlaufenden Flächen der Vorsprünge 54 und 55 anliegen. Wenn nun allerdings der Druckknopf 16 bewusst gedreht wird, wie in Fig. 7 dargestellt ist, werden die Hohlstifte 39 und 40 gegen die Kraft der Druckfeder 41 entlang den Flächen der sichelförmigen Erweiterungen 67, 68 nach innen gedrückt, bis sie an der benachbarten zylindrischen Wandung bzw. Innenfläche des Gehäuses 9 anliegen. An dieser Dreh- bzw. Schwenkbewegung nehmen mit dem Druckknopf 16 auch der Schieber 26 und die Hülse 36 sowie das topfartige Halteelement 47 teil, nicht aber der Betätigungskörper 58 mit den Leisten 60 und 61. Mit der Dreh- bzw. Schwenkbewegung ist der an der Hülse 36 befestigte Zapfen 72 von der Stellung gemäss Fig. 6 zu der Stellung gemäss Fig. 8 mitgeschwenkt worden. Durch die Breite der Erweiterung 70 und durch Anschlag des Zapfens 72 an den beiden vertikalen Flächen der Erweiterung 70 ist das Mass der Drehbewegung des Druckknopfes 16 begrenzt. Wenn man nun bei der Stellung der Hohlstifte 39, 40 und des Zapfens 72 nach den Figuren 7 und 8 den Druckknopf loslässt, kann er sich mit dem Schieber und der Hülse wieder nach oben hin bewegen, wobei der Zapfen 72 an der Schrägfläche 71 entlanggleitet und ein Zurückdrehen in die Ursprungslage bewirkt (Fig. 4). Während dieser Zurückbewegung gleiten die abgerundeten Köpfe der Hohlstifte 39, 40 wie in Fig. 9 angezeigt ist, in Richtung des Pfeiles an der zylindrischen Innenwand des Gehäuses 9 bis sie wieder in die ersten Raststellungen am unteren Ende der Schlitze 50 und 51 einrasten können.The operation of the actuator described above is essentially as follows. 1 is in the rest position, the thickened portions 62, 63 of the strips 60, 61 rest against the stop projections 64 and 65, so that the uppermost position of the moving parts is thus limited, despite a certain preload of the compression springs 31 and 32. The hollow pins 39 and 40 are seated in the first latching position at the lower end of the grooves 50 and 51. If the push button 16 is now pressed down slightly from the position according to FIG. 1, the compression springs 31 and 32 become more or less strong compressed, and the slider 26 moves down accordingly. As a result of the widened opening 42, the hollow pins 39, 40 are not necessarily taken along with the compression spring 41, so that the hollow pins 39, 40 and the sleeve 36 initially remain unchanged in the initial position. If the push button 16 is released after tapping or after a slight shift, so it returns to its original position without triggering or switching. Only when the push button 16 is pressed in so strongly and deliberately that not only the outer compression spring 31, but above all the inner compression spring 32 have been compressed so much that the hollow pins 39, 40 on the inclined surfaces 56, 57 have been pressed in so far are that the rounded heads of the hollow pins are completely inside the sleeve 36, the inner compression spring 32 suddenly shifts the sleeve 36 due to the strong tension, whereby the actuating body 58 with the strips 60 and 61 is suddenly moved down. The latter are connected to the actual switching device, not shown, so that the electrical switch is suddenly switched or triggered. The stroke of the sleeve 36 and the actuating body 58 is limited by the stop projections 64 and 65, ie the shoulder surface 66 of the actuating body 58 then lies against these stop projections 64, 65 according to the position in FIG. 2. After overcoming the projections 54 and 55 between the two locking positions, the hollow pins 39, 40 can spread again by the action of the compression spring 41, so that they are in the second locking position at the upper end of the grooves 52, 53 according to FIG. 2. A return of the moving parts and the push button 16, which indicates in this position that the switching process has taken place, can be done neither by pressing again or by pulling back the push button, since the hollow pins on the described lower surfaces of the projections 54 and extending perpendicular to the direction of displacement 55 concerns. However, if the push button 16 is now deliberately turned, as shown in FIG. 7, the hollow pins 39 and 40 are pressed inward against the force of the compression spring 41 along the surfaces of the crescent-shaped extensions 67, 68 until they touch the adjacent cylindrical wall or the inner surface of the housing 9. In this rotary or pivoting movement, the slide 26 and the sleeve 36 as well as the pot-like holding element 47 also take part with the push button 16, but not the actuating body 58 with the strips 60 and 61. The rotary or pivoting movement is the most important Sleeve 36 fastened pin 72 has been pivoted from the position shown in FIG. 6 to the position shown in FIG. 8. The extent of the rotary movement of the push button 16 is limited by the width of the extension 70 and by the stop of the pin 72 on the two vertical surfaces of the extension 70. If you let go of the push button at the position of the hollow pins 39, 40 and the pin 72 according to FIGS. 7 and 8, it can move upwards again with the slide and the sleeve, the pin 72 sliding along the inclined surface 71 and a turning back to the original position causes (Fig. 4). During this return movement, the rounded heads of the hollow pins 39, 40 slide as indicated in FIG. 9 in the direction of the arrow on the cylindrical inner wall of the housing 9 until they can snap back into the first latching positions at the lower end of the slots 50 and 51.

Der oben erläuterte Ringfortsatz 30 hat nicht nur die Aufgabe, die Enden der Druckfedern 31 und 32 voneinander zu trennen bzw. zwischen diese einzugreifen, vielmehr hat dieser Ringfortsatz die folgende wesentliche Bedeutung. Wenn es einmal vorkommen sollte, dass die eine oder andere Druckfeder 31 oder 32 sich verklemmt, in der Federkraft nachlässt oder gar bricht, wird der erfindungsgemässe Betätigungsvorsatz nicht wirkungslos, vielmehr kommt der Ringfortsatz 30 dann so zur Auswirkung, dass er mit seinem stirnseitigen freien Ende beim Eindrücken des Druckknopfes auf die in der Zeichnung obere Stirnseite der Hülse 36 trifft und diese zwangsweise nach unten treibt, so dass die Aus-Schaltung beispielsweise bei einem Not-Aus-Schalter in jedem Falle erfolgt.The ring extension 30 explained above not only has the task of separating the ends of the compression springs 31 and 32 from one another or intervening between them, but rather this ring extension has the following essential meaning. If it should happen that one or the other compression spring 31 or 32 jams, decreases in spring force or even breaks, the actuating attachment according to the invention does not become ineffective, rather the ring extension 30 then comes into effect in such a way that it has its free end at the end when pressing the push button hits the upper end face of the sleeve 36 in the drawing and forcibly drives it downward, so that the switch-off takes place in any case, for example, in the case of an emergency-off switch.

Claims (6)

1. Actuating attachment for electrical control and indicating devices, in particular emergency switches, with a locking device for the operating position, in which case a slide (26) is arranged to slide by means of a push button (16) in the device housing (9), the slide (26) also being surrounded by a a slide part (36), in which opposing locking pins (39, 40) which are under spring pressure are held in transverse bores (37, 38), each locking pin (39, 40) co-operating with two locking points (50, 51, 52, 53) located in the sliding direction at a distance apart on both sides of a projection (54, 55) respectively and the projection on the side corresponding to the inoperative position comprising an inclined surface (56, 57), an outer compression spring (31) being located between the push button and the end face of the housing (9) and an inner compression spring (32) being located between the push button and the sliding member (36) and the push button (16) being connected to the slide (26), in which case furthermore the second locking points (52, 53) are constructed to correspond to the operating position so that unlocking only takes place by rotating the push button (16), about its longitudinal axis, characterised in that the sliding member is constructed as a cylindrical sleeve (36), which is seated in a sliding manner on the part of the slide (26) likewise constructed cylindrically, that the slide (26) comprises opposing, flattened guide surfaces (43, 44) on the periphery and the inner surface of the sleeve (36) with corresponding flat portions is adapted to the slide part, that the slide (26) comprises an opening (42) enlarged in the sliding direction, that the bores (37, 38) for receiving the locking pins (39, 40) in the sleeve (36) are constructed continuously and the locking pins (39,40) constructed as hollow pins with outer ends rounded-off in the form of a hemisphere are so long that they project partly into the enlarged opening (42) of the slide (26) and are guided to move therein, that solely two hollow pins (39, 40) are provided, in which a single compression spring (41) engages by its ends, that the second locking points (52, 53, 67, 68) have a part of crescent-shaped cross-section, so that on rotating the push button (16), the hollow pins (39, 40) are pushed back continuously from the locking point into the bores (37, 38) of the sleeve (36) and the opening (42) of the slide (26) and that adjoining the end of the sleeve (36) remote from the push button (16) is an actuating member (58) able to move in the sliding direction, which is limited in its stroke by stops (62, 63, 64, 65).
2. Actuating attachment according to Claim 1, characterised in that a groove (69) extending in the sliding direction is provided in the inner wall of the housing (9) staggered by an angle of approximately 90° with respect to the locking points (50, 51, 52, 53), which groove in the region corresponding to the second locking point (52, 53, 67, 68) is on one side widened-out (70) in the shape of a trapezium with an inclined surface (71) and that engaging in this groove is a pin (72) attached to the sleeve (36).
3. Actuating attachment according to Claim 1 or 2, characterised in that the ends of the outer and inner compression springs (31, 32) supported on the head (27) of the slide (26) are separated by an annular projection (30), the dimensions of which are such that when the push button (16) is actuated, its free ends strike against the opposing front side of the sleeve (36).
4. Actuating attachment according to one of the preceding Claims, characterised in that the actuating member (58) comprises bars (60, 61) leading outwards, the ends of which bars comprise outer thickened portions (62, 63) and that the stroke of the actuating member (58) is limited by stops (64, 65) on the inner wall of a threaded lug (5) and that the threaded lug (5) bears by a collar (6) on the front end of the housing (9) remote from the push button (16) and is attached thereto.
5. Actuating attachment according to one of the preceding Claims, characterised in that provided on the periphery of the housing (9) is a peripheral groove (10), in which an annular bead (11) on one edge of a flexible sealing hood (12) is clamped, that the other edge (13) of the sealing hood (12) is attached in an annular groove (14) of an inner cylindrical shoulder (15) of the push button (16) and that a hollow chamber (23) for receiving part of the sealing hood (12) is provided ont the inner side of the push button (16) between the shoulder (15) and a conically extended edge (17) of the push button.
6. Actuating attachment according to one of the preceding Claims, characterised in that provided on the outer end face of the push button (16) is an indicating plate (20), preferably a red plate of an emergency switch, which is provided with locking projections (21, 22), which engage in recesses (18, 19).
EP84110053A 1984-08-23 1984-08-23 Operating adaptor for command or signaling devices, in particular emergency stop switch Expired EP0172926B1 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
EP84110053A EP0172926B1 (en) 1984-08-23 1984-08-23 Operating adaptor for command or signaling devices, in particular emergency stop switch
DE8484110053T DE3472731D1 (en) 1984-08-23 1984-08-23 Operating adaptor for command or signaling devices, in particular emergency stop switch
AT84110053T ATE35747T1 (en) 1984-08-23 1984-08-23 ACTUATION ATTACHMENT FOR ELECTRICAL COMMAND AND SIGNALING DEVICES, IN PARTICULAR EMERGENCY STOP SWITCHES.
ES1985296197U ES296197Y (en) 1984-08-23 1985-07-10 DRIVE EXTENSION FOR ELECTRIC CONTROL AND WARNING DEVICES, ESPECIALLY EMERGENCY SWITCHES
US06/766,814 US4703141A (en) 1984-08-23 1985-08-16 Actuation attachment for electrical controlling and signalling devices, particularly for emergency circuit breakers
CA000488962A CA1265565A (en) 1984-08-23 1985-08-19 Actuation attachment for electrical controlling and signalling devices, particularly for emergency circuit breakers
DK377385A DK165310C (en) 1984-08-23 1985-08-20 OPERATING PROVIDER FOR ELECTRIC COMMAND AND MESSAGE DEVICES, ISRAEL EMERGENCY SWITCHES
NO853308A NO163429C (en) 1984-08-23 1985-08-22 MANUAL PROVIDER FOR ELECTRIC COMMAND AND MESSAGE DEVICES, SPECIAL EMERGENCY DISCONNECTORS.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP84110053A EP0172926B1 (en) 1984-08-23 1984-08-23 Operating adaptor for command or signaling devices, in particular emergency stop switch

Publications (2)

Publication Number Publication Date
EP0172926A1 EP0172926A1 (en) 1986-03-05
EP0172926B1 true EP0172926B1 (en) 1988-07-13

Family

ID=8192127

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84110053A Expired EP0172926B1 (en) 1984-08-23 1984-08-23 Operating adaptor for command or signaling devices, in particular emergency stop switch

Country Status (8)

Country Link
US (1) US4703141A (en)
EP (1) EP0172926B1 (en)
AT (1) ATE35747T1 (en)
CA (1) CA1265565A (en)
DE (1) DE3472731D1 (en)
DK (1) DK165310C (en)
ES (1) ES296197Y (en)
NO (1) NO163429C (en)

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FR2575590B1 (en) * 1984-12-28 1987-01-23 Telemecanique Electrique EMERGENCY SWITCHING APPARATUS
DE8811663U1 (en) * 1988-09-14 1990-01-25 Schaltbau GmbH, 81677 München Push button switch
US5408061A (en) * 1993-11-30 1995-04-18 Inventio Ag Emergency stop switch
FR2792453B1 (en) * 1999-04-16 2001-05-11 Schneider Electric Sa PUSH BUTTON TYPE SWITCH FOR EMERGENCY STOP
DE10011625C1 (en) * 2000-03-10 2001-10-18 Moeller Gmbh Emergency off button has locking arrangement can be inserted in one of two guide paths, one allowing unlocking only by pulling and the other only by turning
FR2813991B1 (en) 2000-09-12 2004-08-20 Entrelec Sa SECTIONABLE ELECTRICAL CONTACT DEVICE, ESPECIALLY FOR AN ELECTRICAL JUNCTION BLOCK
DE102005033166B4 (en) * 2005-07-13 2015-11-05 Georg Schlegel Gmbh & Co. Kg Switching device with at least one switch plunger
EP2110828B1 (en) * 2008-04-18 2011-10-19 Abb Ab An actuator device and an electric switch device provided therewith
FR2935835B1 (en) * 2008-09-10 2010-10-22 Fabien Broly SWITCH SWITCH
DE102009007689A1 (en) * 2009-02-05 2010-08-19 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Hand-operated locking device for valves, in particular parking brakes in commercial vehicles
EP2713380B1 (en) 2012-09-26 2016-11-30 Siemens Aktiengesellschaft Pressure switch compact component
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Also Published As

Publication number Publication date
DK165310C (en) 1993-03-22
ES296197U (en) 1987-08-01
US4703141A (en) 1987-10-27
ATE35747T1 (en) 1988-07-15
DK377385A (en) 1986-02-24
NO853308L (en) 1986-02-24
DK377385D0 (en) 1985-08-20
DK165310B (en) 1992-11-02
EP0172926A1 (en) 1986-03-05
ES296197Y (en) 1988-02-16
DE3472731D1 (en) 1988-08-18
CA1265565A (en) 1990-02-06
NO163429C (en) 1990-05-23
NO163429B (en) 1990-02-12

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