EP1723660B1 - Emergency stop actuator with a locking device - Google Patents

Emergency stop actuator with a locking device Download PDF

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Publication number
EP1723660B1
EP1723660B1 EP04719912A EP04719912A EP1723660B1 EP 1723660 B1 EP1723660 B1 EP 1723660B1 EP 04719912 A EP04719912 A EP 04719912A EP 04719912 A EP04719912 A EP 04719912A EP 1723660 B1 EP1723660 B1 EP 1723660B1
Authority
EP
European Patent Office
Prior art keywords
locking
emergency stop
locking elements
stop actuator
way
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 - Lifetime
Application number
EP04719912A
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German (de)
French (fr)
Other versions
EP1723660A1 (en
Inventor
Mesut Akbasak
Johann Demleitner
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Siemens AG
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Siemens AG
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Publication of EP1723660A1 publication Critical patent/EP1723660A1/en
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Publication of EP1723660B1 publication Critical patent/EP1723660B1/en
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    • 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
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H01H9/28—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member
    • H01H9/281—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member making use of a padlock
    • H01H9/282—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member making use of a padlock and a separate part mounted or mountable on the switch assembly and movable between an unlocking position and a locking position where it can be secured by the padlock
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2300/00—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H
    • H01H2300/024—Avoid unwanted operation

Definitions

  • the present invention relates to an emergency stop actuator with locking device according to the preamble of claim 1.
  • Controllers and drives for automated processes and machines are equipped with so-called safety circuits for safety reasons. These in turn have so-called emergency stop command devices, which ensure that in the event of a fault, ie in the event of a fault or emergency situation, the process is safely interrupted.
  • emergency stop control devices include appropriate emergency stop actuators designed as normally closed contacts.
  • Emergency stop actuators consist essentially of a switching element housing with the switching contacts and an actuating element.
  • the actuating element is connected to the switching element housing so that it is movable relative to this from a first non-actuated position to a second actuated position.
  • a mounted on the switching element housing switching contact is designed as an opener, wherein the switching contact is open in the actuated position. According to EN 60947-5-1, this switching contact must be able to be opened in the event of a fault in order to interrupt the safety circuit.
  • the actuator is as large as possible, for example in the form of a mushroom head, so that a person can open the switch contact by pressing the mushroom head in case of failure.
  • the safety circuit is then interrupted and can only be reactivated by the fact that the actuator is manually placed in its first, non-actuated, position.
  • an emergency stop button which has an actuating element with a radially projecting cam and a handle notch for blocking the actuating element.
  • the handle notch is designed and arranged so that it can be moved from a blocking position to a release position and vice versa and can be secured by a padlock in the blocking position.
  • the padlock ensures that only an authorized person can reactivate this switch-off button.
  • US 3,182,143 A is a closure device for "push buttons" known.
  • the closure device is intended to be installed on a “push-button”.
  • the device allows the user to hold the "push button” in a depressed position and secure it.
  • Out DE 890 78 88 U a device for switching on and off of electrical equipment is specified, wherein the device has at least one slide, which is displaceable by means of an input and a Ausschaltnocke and these associated touch panels having sensing device from a closed position to an off position and vice versa.
  • a safety control device for an electrical switch which comprises a hinged plate which on the one hand is provided for actuating "push buttons" for circuit interruption and on the other hand has means for securing the plate.
  • Object of the present invention is to provide a simpler emergency stop actuator with locking device.
  • the locking elements are locked in the locked position, it is ensured that the actuating element is not easily changed over from the actuated position to the unactuated position and thus the safety circuit can be closed again after a forced shutdown, for example. Rather, it must first be the locking, which can be done for example by padlocks, repealed. If the lock can only be released by a previously authorized person, it is ensured that the fault, ie the fault and the reason for the break, are examined and corrected before the safety circuit is closed again. Thus, even after an error, the further safe operation of the process or the machine is guaranteed.
  • the structure of the locking device with only two locking elements, wherein the one is connected to the switching element housing and the other is connected via the at least one common guide with the first, allows a simple and therefore inexpensive construction of an emergency stop actuator with locking device.
  • the complete separation of the common guide prevents and thus the captive of the two locking elements be achieved.
  • the locking device forms a separate separable from the emergency stop actuator unit, the locking device is easy to mount the emergency stop actuator and thus easy to handle.
  • a smaller number of components for the locking device necessary which also in contrast to the in the EP 0 800 183 B1 embodiment shown are still connected to each other captive with each other.
  • FIG. 1 shows a first example of an emergency stop actuator with locking device.
  • Emergency-off actuators are well known and consist essentially of a switching element housing 600 with at least one ⁇ ffnerutton 610 and the actuator 500 for actuating the contact 610.
  • the switching element housing 600 In the controls and drives for automated processes and processes the switching element housing 600, for example, in an exposed position an opening of a mounting wall 400, such as the one of a control panel, out and connected to this, for example by means of a fferklemmitati not shown here, connected.
  • the actuating element 500 is arranged, that is, both are connected to one another such that the actuating element 500 can be moved in the axial direction on the switching element housing 600 between a first and a second position.
  • this actuating element 500 is usually designed as a so-called mushroom head, in order to allow the simplest possible handling.
  • the switching contact 610 arranged in the switching element housing which is designed as a normally closed contact, is opened. Opening the normally closed contact 610 deactivates the safety circuit that is used for the safe operation of the machine or system or process.
  • the NC contact 610 is designed so that in the event of an error, the contact by a mechanical movement of the actuating element 500, that is, by pressing the mushroom head, forcibly opened. Only after the actuator 500 is manually returned to the first non-actuated position can the safety circuit be reactivated.
  • the emergency stop actuator having a locking device according to a first embodiment of the invention.
  • the first embodiment according to the invention in this case has two locking elements 111 and 112, which are connected to each other via two, integrated in the locking elements 111 and 112 common guides 120.
  • a part of the locking element 112 is designed as a rosette 132.
  • the rosette 132 in this case has a shape corresponding to the outer dimensions of the switching element housing, so that it can be slipped over the switching element housing 600 and thus the locking element 112 can be connected to the switching element housing 600.
  • the rosette 132 is configured so that the locking element 112 is rotatable about an arbitrary angle about the axis of the switching element housing 600.
  • Another part 122 of the connecting element 112 is designed such that it serves as a common guide 120 together with a part 121 of the other locking element 111. That is, the formed as a guide pin part 121 of the one locking element 111 is guided in the formed as a guide sleeve portion 122 of the other locking element 112.
  • Guide pin 121 and guide sleeve 122 together form the common guide 120, via which the two locking elements 111 and 112 are connected to each other and on the position of the two locking elements 111 and 112 relative to each other is variable.
  • the common guide 120 it is irrelevant whether the part 121 is formed as a guide pin and the part 122 as a guide sleeve, in which the guide pin is guided, or vice versa.
  • the two locking elements 111 and 112 can now be changed in their position relative to each other be that when the actuating element is in the second actuated position, the two locking elements 111 and 112 are locked together in a locking position to secure the actuating element against accidental movement out of the second actuated position.
  • FIG. 2 can be seen, provided in both locking elements corresponding through holes 141 and 142, which are in the overlapping parts, which serve as a common guide 120, are. Is the actuator now, as in FIG. 1 shown in the second confirmed position, the positions of the connecting elements 111 and 112 to each other can be changed so far that the through holes 141 and 142 are superimposed.
  • the bracket can then be carried out by appropriately provided Padlocks and completed the Padlocks and thus the actuator 500 are secured in the second actuated position. This prevents an unauthorized person from being able to bring the actuating element out of its second position and thus bypassing the required safety functions.
  • the two locking elements 111 and 112 are captive in connection with each other, appropriate design measures are provided.
  • the two locking elements 111 and 112 can then be mutually changed captive in their position to each other until the pulling apart of the two locking elements of the latch on a (not shown) abutment in the guide sleeve 122 abuts.
  • the latch can be compressed, so that the formed as an increase stop can be overcome.
  • FIG. 1 and 2 The first example of six padlocks shown is particularly suitable for circuit breakers while the in FIG. 3 shown second embodiment is sufficient for three padlocks in general for the required safety measures for controls and drives for automated processes and processes.
  • FIG. 3 shown second embodiment shows the position in non-actuated position
  • FIG. 4 the same embodiment in actuated and secured by three padlocks position of the actuating element shows.
  • FIG. 3 and 4 shown second embodiment again consists of a first 211 and a second 212 locking element, but which has only a single common guide 220.
  • the locking element 212 is in turn provided with a rosette 232 in order to connect it to the switching element housing 600.
  • Parts of the first and the second locking element form the guide pin 221 and the guide sleeve 222, with corresponding through holes 241 and 242, respectively.
  • FIG. 5 shows a first fiction, contemporary embodiment of a locking device, with the two locking elements 311 and 312.
  • the locking member 312 is in turn as previously the locking elements 112 and 212 connected via a designed as a rosette part with the switching element housing 600.
  • Via the common guide 320 which is formed as a hinge, a rotational movement of the interconnected locking elements 311 and 312 to each other is made possible. If the actuating element is now in the actuated position, the locking element 311 designed as a cap can be rotated via the common guide element 320 relative to the first locking element 312 and rotated so far beyond the actuating element 500 that both can be locked in the locked position with the padlocks placed in the superimposed through holes and thus secured in this position.
  • the present invention is not intended to be in the Fig. 5 be limited to an embodiment shown by way of example. Rather, further embodiments according to the claims are conceivable and encompassed by the invention as long as the basic idea that a simple and therefore cost-effective reclosing protection is provided by two interrelated locking elements 111, 112, 211, 212, 311, 312, is fulfilled.
  • the padlocks instead of the padlocks, other interlocks that meet a fuse function equivalent to the padlocks are equally applicable.
  • other embodiments of the guide may be provided instead of the locking device shown here.
  • the parts of the locking device can for example be made of metal or an impact-resistant plastic or even of any material that is suitable to ensure the locking device to be effected with securing functions.

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  • Switch Cases, Indication, And Locking (AREA)

Abstract

The invention relates to an emergency stop actuator with a locking device, comprising a switching element housing (600), which can be fixed to a mounting wall (400), and an actuating element (50). The actuating element (500) is joined to the switching element housing (600) in such a way that it can move in relation thereto from a first non-actuated position to a second actuated position. The locking device comprises two locking elements (111, 112, 211, 212, 311, 312) which are connected by means of at least one common guide (120,220,320). One of the locking elements (112, 212, 312) is connected to the switching element housing (600). When the actuating element (500) is in the second actuated position, the position of the two locking elements (111, 112, 211, 212, 311, 312) can be modified in relation to each other by means of the at least one common guide (120, 220, 320) such that they assume a locking position wherein the two locking elements (111, 112, 211, 212, 311, 312) can be locked to each other such that the actuating element (500) is prevented from accidentally moving out of the second actuated position.

Description

Die vorliegende Erfindung betrifft einen Not-Aus Betätiger mit Verriegelungseinrichtung gemäß dem Oberbegriff des Anspruchs 1 .The present invention relates to an emergency stop actuator with locking device according to the preamble of claim 1.

Steuerungen und Antriebe für automatisiert ablaufende Prozesse und Maschinen sind aus Sicherheitsgründen mit so genannten Sicherheitskreisen versehen. Diese weisen wiederum so genannte Not-Aus Befehlsgeräte auf, die sicherstellen, dass im Fehlerfall, das heißt bei einer Störung oder Notfallsituation, der Prozess sicher unterbrochen wird. Diese Not-Aus Befehlsgeräte umfassen entsprechende als Öffner ausgebildete Not-Aus Betätiger.Controllers and drives for automated processes and machines are equipped with so-called safety circuits for safety reasons. These in turn have so-called emergency stop command devices, which ensure that in the event of a fault, ie in the event of a fault or emergency situation, the process is safely interrupted. These emergency stop control devices include appropriate emergency stop actuators designed as normally closed contacts.

Not-Aus Betätiger bestehen im Wesentlichen aus einem Schaltelementgehäuse mit den Schaltkontakten und einem Betätigungselement. Das Betätigungselement ist dabei mit dem Schaltelementgehäuse so verbunden, dass es relativ zu diesem von einer ersten nicht betätigten Position in eine zweite betätigte Position bewegbar ist. Ein am Schaltelementgehäuse angebrachter Schaltkontakt ist als Öffner ausgebildet, wobei der Schaltkontakt in der betätigten Position geöffnet ist. Nach der EN 60947-5-1 muss im Fehlerfall dieser Schaltkontakt geöffnet werden können, um den Sicherheitskreis zu unterbrechen.Emergency stop actuators consist essentially of a switching element housing with the switching contacts and an actuating element. The actuating element is connected to the switching element housing so that it is movable relative to this from a first non-actuated position to a second actuated position. A mounted on the switching element housing switching contact is designed as an opener, wherein the switching contact is open in the actuated position. According to EN 60947-5-1, this switching contact must be able to be opened in the event of a fault in order to interrupt the safety circuit.

Für eine einfache Handhabung ist das Betätigungselement möglichst großflächig, beispielsweise in Form eines Pilzkopfes ausgebildet, so dass eine Person im Fehlerfall durch Drücken des Pilzkopfes den Schaltkontakt öffnen kann. Der Sicherheitskreis ist dann unterbrochen und kann nur dadurch wieder aktiviert werden, dass das Betätigungselement manuell in seine erste, nicht betätigte, Position gebracht wird.For easy handling, the actuator is as large as possible, for example in the form of a mushroom head, so that a person can open the switch contact by pressing the mushroom head in case of failure. The safety circuit is then interrupted and can only be reactivated by the fact that the actuator is manually placed in its first, non-actuated, position.

Da nach einem Fehlerfall, das heißt beispielsweise nach einer Zwangsabschaltung von automatisiert ablaufenden Prozessen oder auch von Maschinen, diese nicht ohne weitere Fehlerüberprüfungen wieder in Betrieb genommen werden dürfen, sind entsprechende Maßnahmen vorzusehen, die sicherstellen, dass der Sicherheitskreis nicht ohne weiteres wieder geschlossen werden kann.Since after an error, that is, for example, after a forced shutdown of automated processes running or even from machines, these may not be put back into operation without further error checks, appropriate measures must be taken to ensure that the safety circuit can not be closed again without further notice ,

So ist beispielsweise aus der EP 0 800 188 B1 ein Not-Abschalttaster bekannt, der ein Betätigungselement mit einer radial vorspringenden Nocke und eine Griffkerbe zum Blockieren des Betätigungselements aufweist. Die Griffkerbe ist dabei so ausgebildet und angeordnet, dass sie von einer Blockierposition in eine Freigabeposition und umgekehrt verschoben werden kann und durch ein Vorhängeschloss in der Blockierposition gesichert werden kann. Mit dem Vorhängeschloss ist sichergestellt, dass nur eine autorisierte Person, diesen Abschalttaster wieder aktivieren kann. Dieser aus der EP 0 800 188 B1 bekannte Aufbau eines Not-Aus Betätigers mit Verriegelungseinrichtung hat aber den Nachteil, dass für die Sicherung des Not-Aus Betätigers gegen eine unerlaubte Verstellung ein relativ hoher mechanischer Aufwand betrieben wird.For example, from the EP 0 800 188 B1 an emergency stop button is known which has an actuating element with a radially projecting cam and a handle notch for blocking the actuating element. The handle notch is designed and arranged so that it can be moved from a blocking position to a release position and vice versa and can be secured by a padlock in the blocking position. The padlock ensures that only an authorized person can reactivate this switch-off button. This from the EP 0 800 188 B1 However, known construction of an emergency stop actuator with locking device has the disadvantage that a relatively high mechanical effort is operated for securing the emergency stop actuator against unauthorized adjustment.

Aus US 3,182,143 A ist eine Verschlussvorrichtung für "Push-Buttons" bekannt. Die Verschlussvorrichtung ist dafür vorgesehen, auf einem "Push-Button" installiert zu werden. Die Vorrichtung ermöglicht es dem Benutzer, den "Push-Button" in einer gedrückten Stellung zu halten und diese zu sichern. Dieses Dokument offerbart einen Betötiger gemäβ Oberbegriff des Anspruchs 1.Out US 3,182,143 A is a closure device for "push buttons" known. The closure device is intended to be installed on a "push-button". The device allows the user to hold the "push button" in a depressed position and secure it. This document offers a requester according to the preamble of claim 1.

Aus DE 890 78 88 U ist eine Vorrichtung zum Ein- und Ausschalten elektrischer Geräte angegeben, wobei die Vorrichtung wenigstens einen Schieber aufweist, der mittels eine Ein- und eine Ausschaltnocke und diesen zugeordnete Tastfelder aufweisenden Tasteinrichtung von einer Einschaltstellung in eine Ausschaltstellung verschiebbar ist und umgekehrt.Out DE 890 78 88 U a device for switching on and off of electrical equipment is specified, wherein the device has at least one slide, which is displaceable by means of an input and a Ausschaltnocke and these associated touch panels having sensing device from a closed position to an off position and vice versa.

Aus dem Dokument US 2,752,441 A sind Verriegelungseinrichtungen für Schalter bekannt, die den Schalter in einer vordefinierten Position verriegeln. Für so genannte "Push-Buttons" werden rotierende und lineare Verschlussmechanismen vorgestellt.From the document US 2,752,441 A Locking devices are known for switches that lock the switch in a predefined position. For so-called "push buttons", rotating and linear shutter mechanisms are presented.

Aus dem Dokument US 3,233,071 A ist eine betätigende Abdeckung bekannt, die in Verbindung mit Motorkontrollschaltern oder ähnlichen Schaltern verwendbar ist. Mittels der Abdeckung wird eine große betätigende Fläche für einen "Stop-Button", der im Schalter integriert ist, zur Verfügung gestellt. Eine Betätigung irgendeines Teils der Abdeckung führt zu einer sicheren und unmittelbaren Sicherheitsabschaltung über den "Stop-Button".From the document US 3,233,071 A For example, an actuated cover is known which is usable in conjunction with engine control switches or similar switches. By means of the cover, a large actuating surface is provided for a "stop button" integrated in the switch. Actuation of any part of the cover results in a safe and immediate safety shutdown via the "Stop Button".

Aus US 1,801,228 A ist eine Sicherheitskontrollvorrichtung für einen elektrischen Schalter bekannt, der eine mit Scharnieren befestigte Platte aufweist, die einerseits zur Betätigung von "Push-Buttons" zur Schaltkreisunterbrechung vorgesehen ist und andererseits Mittel zum Sichern der Platte aufweist.Out US 1,801,228 A For example, a safety control device for an electrical switch is known which comprises a hinged plate which on the one hand is provided for actuating "push buttons" for circuit interruption and on the other hand has means for securing the plate.

Aufgabe der vorliegenden Erfindung ist es, einen einfacheren Not-Aus Betätiger mit Verriegelungseinrichtung anzugeben.Object of the present invention is to provide a simpler emergency stop actuator with locking device.

Diese Aufgabe wird gelöst durch einen Not-Aus Betätiger mit den kennzeichnenden Merkmalen des Anspruchs 1 .This object is achieved by an emergency stop actuator with the characterizing features of claim 1.

Dadurch, dass die Verriegelungselemente in der Verriegelungsstellung verriegelbar sind, wird sichergestellt, dass das Betätigungselement nicht ohne weiteres von der betätigten Position in die unbetätigte Stellung umgestellt und somit der Sicherheitskreis beispielsweise nach einer Zwangsabschaltung wieder geschlossen werden kann. Vielmehr muss dazu zuerst die Verriegelung, die beispielsweise durch Vorhängeschlösser erfolgen kann, aufgehoben werden. Kann die Verriegelung nur durch eine zuvor autorisierte Person aufgehoben werden, so ist sichergestellt, dass der Fehlerfall, also die Störung und der Grund der Unterbrechung, untersucht und behoben wird, bevor der Sicherheitskreis wieder geschlossen wird. Somit ist auch nach einem Fehlerfall der weitere sichere Betrieb des Prozesses oder der Maschine gewährleistet.The fact that the locking elements are locked in the locked position, it is ensured that the actuating element is not easily changed over from the actuated position to the unactuated position and thus the safety circuit can be closed again after a forced shutdown, for example. Rather, it must first be the locking, which can be done for example by padlocks, repealed. If the lock can only be released by a previously authorized person, it is ensured that the fault, ie the fault and the reason for the break, are examined and corrected before the safety circuit is closed again. Thus, even after an error, the further safe operation of the process or the machine is guaranteed.

Der Aufbau der Verriegelungseinrichtung mit nur zwei Verriegelungselementen, wobei das eine mit dem Schaltelementgehäuse verbunden ist und das andere über die zumindest eine gemeinsame Führung mit dem Ersten verbunden ist, erlaubt einen einfachen und damit kostengünstigen Aufbau eines Not-Aus Betätigers mit Verriegelungseinrichtung.The structure of the locking device with only two locking elements, wherein the one is connected to the switching element housing and the other is connected via the at least one common guide with the first, allows a simple and therefore inexpensive construction of an emergency stop actuator with locking device.

Vorzugsweise kann durch ein zusätzliches Sicherungselement das vollständige Trennen der gemeinsamen Führung verhindert und somit die Unverlierbarkeit der beiden Verriegelungselemente erreicht werden. Dadurch, dass die Verriegelungseinrichtung in sich eine separate vom Not-Aus Betätiger trennbare Einheit bildet, ist die Verriegelungseinrichtung einfach am Not-Aus Betätiger zu montieren und damit auch einfach in der Handhabung. So ist insbesondere im Gegensatz zu dem aus der EP 0 800 183 B1 bekannten Not-Aus Betätiger eine geringere Anzahl an Bauelementen für die Verriegelungseinrichtung notwendig, die zudem im Gegensatz zu der in der EP 0 800 183 B1 gezeigten Ausführungsform auch noch untereinander unverlierbar miteinander verbunden sind.Preferably, by an additional securing element, the complete separation of the common guide prevents and thus the captive of the two locking elements be achieved. The fact that the locking device forms a separate separable from the emergency stop actuator unit, the locking device is easy to mount the emergency stop actuator and thus easy to handle. Thus in particular in contrast to that from the EP 0 800 183 B1 Known emergency stop actuator a smaller number of components for the locking device necessary, which also in contrast to the in the EP 0 800 183 B1 embodiment shown are still connected to each other captive with each other.

Weitere vorteilhafte Ausführungen und bevorzugte Weiterbildungen der Erfindung sind den Unteransprüchen zu entnehmen.Further advantageous embodiments and preferred developments of the invention can be found in the dependent claims.

Die Erfindung sowie weibere Beispiele werden im Weiteren anhand der nachfolgenden Figuren näher beschrieben. Es zeigen:

Fig. 1
ein erstes Beispiel eines Not-Aus Betätigers mit Verriegelungseinrichtung für sechs Vorhängeschlösser,
Fig.2
die Verriegelungseinrichtung des ersten Beispiels in Explosionsdarstellung,
Fig.3
Seitenansicht eines zweiten Beispiels des Not-Aus Betätigers mit Verriegelungseinrichtung für drei Vorhängeschlösser,
Fig.4
das zweite Beispiel der Verriegelungseinrichtung in gesicherter betätigter Stellung mit drei Vorhängeschlössern,
Fig. 5
eine erste erfindungsgemäße Ausführungsform eines Not-Aus Betätiger mit einer Verriegelungseinrichtung.
The invention and female examples will be described in more detail below with reference to the following figures. Show it:
Fig. 1
a first example of an emergency stop actuator with locking device for six padlocks,
Fig.2
the locking device of the first example in exploded view,
Figure 3
Side view of a second example of the emergency stop actuator with locking device for three padlocks,
Figure 4
the second example of the locking device in secured actuated position with three padlocks,
Fig. 5
a first embodiment of an emergency stop actuator according to the invention with a locking device.

Figur 1 zeigt ein erstes Beispiel eines Not-Aus Betätigers mit Verriegelungseinrichtung. Not-Aus Betätiger sind allgemein bekannt und bestehen im Wesentlichen aus einem Schaltelementgehäuse 600 mit zumindest einem Öffnerkontakt 610 und dem Betätigungselement 500 zum Betätigen des Kontaktes 610. Bei den Steuerungen und Antrieben für automatisiert ablaufende Prozesse und Maschinen ist das Schaltelementgehäuse 600 beispielsweise in exponierter Lage durch eine Öffnung einer Montagewand 400, wie beispielsweise der einer Schalttafel, geführt und mit dieser, zum Beispiel mittels einer hier nicht näher gezeigten Schraubklemmverbindung, verbunden. Auf dem Schaltelementgehäuse 600 ist das Betätigungselement 500 angeordnet, das heißt beide sind so miteinander verbunden, dass das Betätigungselement 500 in axialer Richtung auf dem Schaltelementgehäuse 600 zwischen einer ersten und einer zweiten Position bewegt werden kann. Dieses Betätigungselement 500 ist bei Not-Aus Betätigern üblicherweise als so genannter Pilzkopf ausgebildet, um eine möglichst einfache Handhabung zu ermöglichen. Durch Drücken des Betätigungselements 500 in Richtung des Schaltelementgehäuses 600 wird der im Schaltelementgehäuse angeordnete Schaltkontakt 610, der als Öffnerkontakt ausgebildet ist, geöffnet. Mit dem Öffnen des Öffnerkontakts 610 wird damit der Sicherheitskreis, der zum sicheren Betrieb der Maschine oder Anlage oder Prozess dient, deaktiviert. Der Öffnerkontakt 610 ist dabei so ausgebildet, dass im Fehlerfall der Kontakt durch eine mechanische Bewegung des Betätigungselements 500, das heißt durch Drücken des Pilzkopfes, zwangsgeöffnet wird. Erst nachdem das Betätigungselement 500 manuell zurück in die erste nicht betätigte Position gebracht wird, kann der Sicherheitskreis wieder aktiviert werden. FIG. 1 shows a first example of an emergency stop actuator with locking device. Emergency-off actuators are well known and consist essentially of a switching element housing 600 with at least one Öffnerkontakt 610 and the actuator 500 for actuating the contact 610. In the controls and drives for automated processes and processes the switching element housing 600, for example, in an exposed position an opening of a mounting wall 400, such as the one of a control panel, out and connected to this, for example by means of a Schraubklemmverbindung not shown here, connected. On the switching element housing 600, the actuating element 500 is arranged, that is, both are connected to one another such that the actuating element 500 can be moved in the axial direction on the switching element housing 600 between a first and a second position. In the case of emergency-off actuators, this actuating element 500 is usually designed as a so-called mushroom head, in order to allow the simplest possible handling. By pressing the actuating element 500 in the direction of the switching element housing 600, the switching contact 610 arranged in the switching element housing, which is designed as a normally closed contact, is opened. Opening the normally closed contact 610 deactivates the safety circuit that is used for the safe operation of the machine or system or process. The NC contact 610 is designed so that in the event of an error, the contact by a mechanical movement of the actuating element 500, that is, by pressing the mushroom head, forcibly opened. Only after the actuator 500 is manually returned to the first non-actuated position can the safety circuit be reactivated.

Da im Fehlerfall, der so zwangsgeöffnete Sicherheitskreis aber aus Sicherheitsgründen nur von autorisierten Personen wieder geschlossen und damit aktiviert werden soll, sind entsprechende Mittel und Maßnahmen vorzusehen, so dass das im Fehlerfall in die betätigte Position gebrachte Betätigungselement 500 in dieser Position verriegelbar ist. Dazu kann, wie in Figur 1 dargestellt, der Not-Aus Betätiger eine Verriegelungseinrichtung nach einer ersten erfindungsgemäßen Ausführungsform aufweisen. Die erfindungsgemäße erste Ausführungsform weist dabei zwei Verriegelungselemente 111 und 112 auf, die über zwei, in die Verriegelungselemente 111 und 112 integrierte gemeinsame Führungen 120 miteinander verbunden sind. Ein Teil des Verriegelungselements 112 ist dabei als Rosette 132 ausgebildet. Die Rosette 132 weist dabei eine den äußeren Abmessungen des Schaltelementgehäuses entsprechende Form auf, so dass sie über das Schaltelementgehäuse 600 gestülpt und damit das Verriegelungselement 112 mit dem Schaltelementgehäuse 600 verbunden werden kann. Vorzugsweise ist die Rosette 132 dazu so ausgebildet, dass das Verriegelungselement 112 um einen beliebigen Winkel um die Achse des Schaltelementgehäuses 600 drehbar ist. Ein weiterer Teil 122 des Verbindungselements 112 ist so ausgebildet, dass es zusammen mit einem Teil 121 des anderen Verriegelungselements 111 als gemeinsame Führung 120 dient. Das heißt, der als Führungsbolzen ausgebildete Teil 121 des einen Verriegelungselements 111 wird in dem als Führungshülse ausgebildeten Teil 122 des anderen Verriegelungselements 112 geführt. Führungsbolzen 121 und Führungshülse 122 bilden so zusammen die gemeinsame Führung 120, über die die beiden Verriegelungselemente 111 und 112 miteinander verbunden sind und über die die Stellung der beiden Verriegelungselemente 111 und 112 relativ zueinander veränderbar ist. Für die Funktionsweise der gemeinsamen Führung 120 ist es dabei unerheblich, ob das Teil 121 als Führungsbolzen und das Teil 122 als Führungshülse, in dem der Führungsbolzen geführt wird, ausgebildet ist oder umgekehrt.However, in the event of a fault, the safety circuit so forcibly opened is only accessible to authorized persons for safety reasons be closed again and thus activated, appropriate means and measures must be provided so that brought in the actuated position in case of error actuator 500 is locked in this position. This can, as in FIG. 1 illustrated, the emergency stop actuator having a locking device according to a first embodiment of the invention. The first embodiment according to the invention in this case has two locking elements 111 and 112, which are connected to each other via two, integrated in the locking elements 111 and 112 common guides 120. A part of the locking element 112 is designed as a rosette 132. The rosette 132 in this case has a shape corresponding to the outer dimensions of the switching element housing, so that it can be slipped over the switching element housing 600 and thus the locking element 112 can be connected to the switching element housing 600. Preferably, the rosette 132 is configured so that the locking element 112 is rotatable about an arbitrary angle about the axis of the switching element housing 600. Another part 122 of the connecting element 112 is designed such that it serves as a common guide 120 together with a part 121 of the other locking element 111. That is, the formed as a guide pin part 121 of the one locking element 111 is guided in the formed as a guide sleeve portion 122 of the other locking element 112. Guide pin 121 and guide sleeve 122 together form the common guide 120, via which the two locking elements 111 and 112 are connected to each other and on the position of the two locking elements 111 and 112 relative to each other is variable. For the operation of the common guide 120, it is irrelevant whether the part 121 is formed as a guide pin and the part 122 as a guide sleeve, in which the guide pin is guided, or vice versa.

Die beiden Verriegelungselemente 111 und 112 können in ihrer Stellung relativ zueinander nun so verändert werden, dass, wenn das Betätigungselement sich in der zweiten betätigten Position befindet, die beiden Verriegelungselemente 111 und 112 in einer Verriegelungsstellung miteinander verriegelbar sind, um das Betätigungselement gegen ein unbeabsichtigtes Bewegen aus der zweiten betätigten Position heraus zu sichern. Dazu sind, wie aus Figur 2 ersichtlich, in beiden Verriegelungselementen entsprechende Durchgangslöcher 141 und 142 vorgesehen, die sich in den überlappenden Teilen, die als gemeinsame Führung 120 dienen, befinden. Befindet sich das Betätigungselement nun, so wie in Figur 1 gezeigt, in der zweiten bestätigten Position, so können die Stellungen der Verbindungselemente 111 und 112 zueinander so weit verändert werden, dass die Durchgangslöcher 141 und 142 übereinander liegen. Durch diese Durchgangslöcher kann dann der Bügel von entsprechend vorgesehenen Vorhängeschlössern durchgeführt und die Vorhängeschlösser abgeschlossen und damit das Betätigungselement 500 in der zweiten betätigten Position gesichert werden. Somit wird verhindert, dass eine nicht autorisierte Person das Betätigungselement aus seiner zweiten Position bringen kann und damit die geforderten Sicherheitsfunktionen umgeht.The two locking elements 111 and 112 can now be changed in their position relative to each other be that when the actuating element is in the second actuated position, the two locking elements 111 and 112 are locked together in a locking position to secure the actuating element against accidental movement out of the second actuated position. These are how out FIG. 2 can be seen, provided in both locking elements corresponding through holes 141 and 142, which are in the overlapping parts, which serve as a common guide 120, are. Is the actuator now, as in FIG. 1 shown in the second confirmed position, the positions of the connecting elements 111 and 112 to each other can be changed so far that the through holes 141 and 142 are superimposed. Through these through-holes, the bracket can then be carried out by appropriately provided Padlocks and completed the Padlocks and thus the actuator 500 are secured in the second actuated position. This prevents an unauthorized person from being able to bring the actuating element out of its second position and thus bypassing the required safety functions.

Sollen die beiden Verriegelungselemente 111 und 112 unverlierbar miteinander in Verbindung stehen, sind entsprechende konstruktive Maßnahmen vorzusehen. So kann wie in der in Figur 2 gezeigten Explosionsdarstellung der Verriegelungseinrichtung am Führungsbolzen 121 des ersten Verriegelungselements 111 zusätzlich ein als Schnappriegel ausgebildetes Element 123 vorgesehen sein, das in einer entsprechenden Führung (nicht dargestellt) der Führungshülse 122 des anderen Verriegelungselements 112 geführt wird. Die beiden Verriegelungselemente 111 und 112 können dann unverlierbar in ihrer Stellung zueinander soweit verändert werden, bis beim Auseinanderziehen der beiden Verriegelungselemente der Schnappriegel an einem (nicht dargestellten) Anschlag in der Führungshülse 122 anstößt. Zum Überwinden dieses Anschlags, das heißt zum Trennen der beiden Verriegelungselemente 111 und 112 müsste im vorliegenden Beispiel dann der Schnappriegel zusammengedrückt werden, so dass der als Erhöhung ausgebildete Anschlag überwunden werden kann.If the two locking elements 111 and 112 are captive in connection with each other, appropriate design measures are provided. Thus, as shown in the exploded view of the locking device shown in Figure 2 on the guide pin 121 of the first locking element 111 additionally designed as a latch element 123 may be provided which is in a corresponding guide (not shown) of the guide sleeve 122 of the other locking element 112 out. The two locking elements 111 and 112 can then be mutually changed captive in their position to each other until the pulling apart of the two locking elements of the latch on a (not shown) abutment in the guide sleeve 122 abuts. To overcome this attack, that is, to separate the two locking elements 111 and 112 would have in the present example, the latch can be compressed, so that the formed as an increase stop can be overcome.

Das in Figur 1 und 2 gezeigte erste Beispiel für sechs Vorhängeschlösser ist insbesondere für Schutzschalter geeignet, während die in Figur 3 gezeigte zweite Ausführungsform mit für drei Vorhängeschlösser im Allgemeinen für die geforderten Sicherheitsmaßnahmen für Steuerungen und Antriebe für automatisiert ablaufende Prozesse und Maschinen ausreichend ist. Die in Figur 3 gezeigte zweite Ausführungsform zeigt die Stellung in nicht betätigter Position, während Figur 4 dieselbe Ausführungsform in betätigter und durch drei Vorhängeschlösser gesicherte Position des Betätigungselements zeigt. Die in Figur 3 und 4 gezeigte zweite Ausführungsform besteht wiederum aus einem ersten 211 und einem zweiten 212 Verriegelungselement, das aber nur eine einzige gemeinsame Führung 220 aufweist. Das Verriegelungselement 212 ist wiederum mit einer Rosette 232 versehen, um dieses mit dem Schaltelementgehäuse 600 zu verbinden. Teile des ersten und des zweiten Verriegelungselements bilden den Führungsbolzen 221 und die Führungshülse 222, mit entsprechenden Durchgangsöffnungen 241 respektive 242.This in FIG. 1 and 2 The first example of six padlocks shown is particularly suitable for circuit breakers while the in FIG. 3 shown second embodiment is sufficient for three padlocks in general for the required safety measures for controls and drives for automated processes and processes. In the FIG. 3 shown second embodiment shows the position in non-actuated position, while FIG. 4 the same embodiment in actuated and secured by three padlocks position of the actuating element shows. In the FIG. 3 and 4 shown second embodiment again consists of a first 211 and a second 212 locking element, but which has only a single common guide 220. The locking element 212 is in turn provided with a rosette 232 in order to connect it to the switching element housing 600. Parts of the first and the second locking element form the guide pin 221 and the guide sleeve 222, with corresponding through holes 241 and 242, respectively.

Figur 5 zeigt eine erste erfindungs gemäße Ausführungsform einer Verriegelungseinrichtung, mit den beiden Verriegelungselementen 311 und 312. Das Verriegelungselement 312 ist wiederum wie zuvor die Verriegelungselemente 112 und 212 über einen als Rosette ausgebildeten Teil mit dem Schaltelementgehäuse 600 verbunden. Über die gemeinsame Führung 320, die als Scharnier ausgebildet ist, wird eine rotatorische Bewegung der so miteinander verbundenen Verriegelungselemente 311 und 312 zueinander ermöglicht. Befindet sich das Betätigungselement nun in betätigter Stellung, so kann das als Kappe ausgebildete Verriegelungselement 311 über das gemeinsame Führungselement 320 relativ zu dem ersten Verriegelungselement 312 verdreht und so weit über das Betätigungselement 500 gedreht werden, dass beide in der Verriegelungsstellung mit den in die übereinanderliegenden Durchgangslöcher eingebrachten Vorhängeschlössern verriegelt werden können und damit in dieser Position gesichert ist. FIG. 5 shows a first fiction, contemporary embodiment of a locking device, with the two locking elements 311 and 312. The locking member 312 is in turn as previously the locking elements 112 and 212 connected via a designed as a rosette part with the switching element housing 600. Via the common guide 320, which is formed as a hinge, a rotational movement of the interconnected locking elements 311 and 312 to each other is made possible. If the actuating element is now in the actuated position, the locking element 311 designed as a cap can be rotated via the common guide element 320 relative to the first locking element 312 and rotated so far beyond the actuating element 500 that both can be locked in the locked position with the padlocks placed in the superimposed through holes and thus secured in this position.

Die vorliegende Erfindung soll nicht auf die in Fig. 5 exemplarisch gezeigte Ausführungsform beschränkt sein. Vielmehr sind weitere Ausführungsformen gemäß der Ansprüche denkbar und von der Erfindung mit umfasst, solange der Grundgedanke, dass durch zwei miteinander in Verbindung stehende Verriegelungselemente 111, 112, 211, 212, 311, 312 eine einfache und damit kostengünstige Wiedereinschaltsicherung geschaffen wird, erfüllt ist. So sind für die Erfindung anstelle der Vorhängeschlösser auch andere Verriegelungen, die eine den Vorhängeschlössern äquivalente Sicherungsfunktion erfüllen, genauso anwendbar. Zudem können anstelle der hier gezeigten Verriegelungseinrichtung auch andere Ausbildungen der Führung vorgesehen sein.The present invention is not intended to be in the Fig. 5 be limited to an embodiment shown by way of example. Rather, further embodiments according to the claims are conceivable and encompassed by the invention as long as the basic idea that a simple and therefore cost-effective reclosing protection is provided by two interrelated locking elements 111, 112, 211, 212, 311, 312, is fulfilled. Thus, for the invention, instead of the padlocks, other interlocks that meet a fuse function equivalent to the padlocks are equally applicable. In addition, other embodiments of the guide may be provided instead of the locking device shown here.

Die Teile der Verriegelungseinrichtung können beispielsweise aus Metall oder einem schlagfesten Kunststoff sein oder aber auch aus jedem Material, das geeignet ist, die mit der Verriegelungseinrichtung zu bewirkende Sicherungsfunktionen zu gewährleisten. Selbstverständlich ist bei all diesen Ausführungen aber immer darauf zu achten, dass die erfindungsgemäße Ausgestaltung der Verriegelungselemente an die Form der Betätigungselemente angepasst ist, so dass das unerlaubte Aktivieren, d.h. Schließen des Sicherheitskreises und damit die Wiederinbetriebnahme sicher verhindert wird.The parts of the locking device can for example be made of metal or an impact-resistant plastic or even of any material that is suitable to ensure the locking device to be effected with securing functions. Of course, in all these embodiments, it is always important to ensure that the inventive design of the locking elements is adapted to the shape of the actuators, so that the unauthorized activation, i. Closing of the safety circuit and thus the recommissioning is reliably prevented.

Claims (7)

  1. Emergency stop actuator with locking device,
    - comprising a switching element housing (600) which can be fixed to a mounting wall (400) and an actuating element (500)
    - wherein the actuating element (500) is connected to the switching element housing (600) in such a way that it can move relative to the latter from a first non-actuated position to a second actuated position,
    - wherein the locking device has two locking elements (311, 312) which are connected by way of at least one common guide (320),
    - wherein one of the locking elements (311, 312) is connected to the switching element housing (600) and, when the actuating element (500) is located in the second actuated position, the position of the two locking elements (311, 312) in relation to each other can be modified by way of the at least one common guide (320) such that they assume a locking position in which the two locking elements (311, 312) can be interlocked with each other such that the actuating element (500) is protected against accidentally moving out of the second actuated position,
    characterised in that
    the common guide (320) is embodied as a hinge whose hinge axis is arranged in parallel with the actuating direction of the actuating element (500) .
  2. Emergency stop actuator according to claim 1, wherein one locking element (311) has at least one guide pin (321) and the other locking element (312) has at least one guide sleeve (322), with guide pin (321) and guide sleeve (312) being embodied in such a way that together they form the common guide (320).
  3. Emergency stop actuator according to claim 2, wherein the guide pin (321) has a least one retaining element which is embodied and arranged in such a way that together with a further retaining element in the guide sleeve (322) it prevents the complete separation of the common guide (320).
  4. Emergency stop actuator according to one of claims 1 to 3, wherein the locking element (312) is connected to the switching element housing (600) in such a way that it can rotate about the axis of the switching element housing (600).
  5. Emergency stop actuator according to one of the preceding claims 1 to 4, wherein the locking elements (311, 312) are made of metal or impact-resistant plastic.
  6. Emergency stop actuator according to one of the preceding claims 1 to 5, wherein at least one through-opening (341, 342) is provided in each of the two locking elements (311, 312) for the shackle of a padlock in such a way that in the locking position the at least one through-opening (341) of one locking element (311) lies completely over the at least one through-opening (342) of the other locking element (312).
  7. Emergency stop actuator according to claim 6, wherein each of the two locking elements (311, 312) has three or six through-openings for interlocking with three or six padlocks.
EP04719912A 2004-03-12 2004-03-12 Emergency stop actuator with a locking device Expired - Lifetime EP1723660B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/DE2004/000497 WO2005088662A1 (en) 2004-03-12 2004-03-12 Emergency stop actuator with a locking device

Publications (2)

Publication Number Publication Date
EP1723660A1 EP1723660A1 (en) 2006-11-22
EP1723660B1 true EP1723660B1 (en) 2009-01-07

Family

ID=34957598

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04719912A Expired - Lifetime EP1723660B1 (en) 2004-03-12 2004-03-12 Emergency stop actuator with a locking device

Country Status (4)

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EP (1) EP1723660B1 (en)
DE (2) DE502004008841D1 (en)
ES (1) ES2316972T3 (en)
WO (1) WO2005088662A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2974137B1 (en) * 2011-04-12 2014-03-14 Laurent Pierre Gabriel Lambert STORAGE SYSTEM FOR MOBILE EQUIPMENT AND EQUIPMENT
ITTO20130456A1 (en) * 2013-06-04 2014-12-05 Menber S Spa SWITCH, IN PARTICULAR BATTERY SWITCHES FOR VEHICLES AND THE LIKE

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1801228A (en) * 1928-10-04 1931-04-14 Henry E Edhlund Safety appliance for push-button stations
US2752441A (en) * 1947-09-09 1956-06-26 Westinghouse Electric Corp Electric switches
US3182143A (en) * 1962-02-21 1965-05-04 Square D Co Lockout device for push button switches having a migratory pivot means
US3233071A (en) * 1963-10-18 1966-02-01 Charles H Buzzell Actuating cover for motor control switch or the like
DE8907888U1 (en) * 1989-06-28 1989-08-10 TRIPUS-Kunststoffteile GmbH, 89312 Günzburg Device for switching electrical devices on and off

Also Published As

Publication number Publication date
DE502004008841D1 (en) 2009-02-26
ES2316972T3 (en) 2009-04-16
WO2005088662A1 (en) 2005-09-22
EP1723660A1 (en) 2006-11-22
DE112004002866A5 (en) 2007-05-24

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