EP1366503A1 - Safety switch with unlatching disc - Google Patents

Safety switch with unlatching disc

Info

Publication number
EP1366503A1
EP1366503A1 EP02719785A EP02719785A EP1366503A1 EP 1366503 A1 EP1366503 A1 EP 1366503A1 EP 02719785 A EP02719785 A EP 02719785A EP 02719785 A EP02719785 A EP 02719785A EP 1366503 A1 EP1366503 A1 EP 1366503A1
Authority
EP
European Patent Office
Prior art keywords
switching
locking
switching disc
locking element
axis
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.)
Granted
Application number
EP02719785A
Other languages
German (de)
French (fr)
Other versions
EP1366503B1 (en
Inventor
Erik Baechle
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.)
Euchner GmbH and Co KG
Original Assignee
Euchner GmbH and Co KG
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 Euchner GmbH and Co KG filed Critical Euchner GmbH and Co KG
Publication of EP1366503A1 publication Critical patent/EP1366503A1/en
Application granted granted Critical
Publication of EP1366503B1 publication Critical patent/EP1366503B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H27/00—Switches operated by a removable member, e.g. key, plug or plate; Switches operated by setting members according to a single predetermined combination out of several possible settings
    • H01H27/002—Switches operated by a removable member, e.g. key, plug or plate; Switches operated by setting members according to a single predetermined combination out of several possible settings wherein one single insertion movement of a key comprises an unlocking stroke and a switch actuating stroke, e.g. security switch for safety guards
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H27/00—Switches operated by a removable member, e.g. key, plug or plate; Switches operated by setting members according to a single predetermined combination out of several possible settings
    • H01H27/002—Switches operated by a removable member, e.g. key, plug or plate; Switches operated by setting members according to a single predetermined combination out of several possible settings wherein one single insertion movement of a key comprises an unlocking stroke and a switch actuating stroke, e.g. security switch for safety guards
    • H01H2027/005—Switches operated by a removable member, e.g. key, plug or plate; Switches operated by setting members according to a single predetermined combination out of several possible settings wherein one single insertion movement of a key comprises an unlocking stroke and a switch actuating stroke, e.g. security switch for safety guards the key receiving part having multiple openings to allow keys from different directions to operate the switch

Definitions

  • the present invention relates to a device for switching an electrical connection depending on the state of a device to be monitored, in particular a safety switch for a protective device.
  • Safety switches with a housing in which a switching disc is rotatably mounted about an axis and into which an actuator for triggering the switching process can be inserted, and with a locking device for blocking the switching disc are known, for example, from EP 0 778 595 A1, which the US 5,898,143.
  • the locking device has a locking element which can be moved against the action of an energy store and which can be brought into engagement with a groove on the peripheral surface of the switching disk in a position blocking the switching disk.
  • the locking element is guided in the housing.
  • the control disc engages in the radial direction with respect to the axis of rotation. In the case of high forces, there is a risk that the peripheral surface of the switching disk will be damaged by the locking element.
  • a safety switch is known from JP 8-203 389 A, in which a locking element pivotably mounted in the housing engages in the radial direction in a groove in the switching disk and thereby blocks the rotary movement of the switching disk.
  • JP 7-260 089 A a safety switch is known in which an elongated locking rod can be moved in the radial direction with respect to the axis of rotation of the switching disk and thereby releases the rotary movement of the switching disk when the actuator is inserted.
  • a safety switch is known in which a one-piece unlocking and locking element can be moved radially with respect to the switching disc when the actuator is inserted, thereby releasing the rotary movement of the switching disc.
  • a safety switch with the features of the preamble of claim 1 and in particular a locking device which has a locking element which is guided in the switching disc and movable against the action of an energy accumulator and which engages in a position blocking the switching disc an associated recess in the housing.
  • the disadvantage here is that the locking element is moved directly by the actuator to be inserted, thereby reducing the security against manipulation.
  • the invention is based on the problem of providing a safety switch which permanently ensures high security against manipulation.
  • the safety switch and the associated actuator should be inexpensive to manufacture.
  • the locking device has a rotatable unlocking element which is arranged next to the switching disc and which can be rotated relative to the switching disc when the actuator is inserted and thereby transfers the locking element to a deblocking position.
  • a rotatable unlocking element which is arranged next to the switching disc and which can be rotated relative to the switching disc when the actuator is inserted and thereby transfers the locking element to a deblocking position.
  • the locking element can be moved parallel to the axis of the switching disc, and the unlocking element pushes the locking element back into the switching disc against the action of the first force accumulator when it is unlocked.
  • the axis of rotation of the unlocking element coincides with the axis of the switching disc.
  • the unlocking element can have flanks projecting from the switching disc, which cooperate with a corresponding web of the actuator, which generally runs transversely to the insertion direction, and / or the web of the actuator can be designed, for example in a U-shape, in such a way that it is in a first Movement section when inserting only the unlocking element rotates and also detects and rotates the switching disc in a subsequent second movement section.
  • the unlocking element is preferably rotatable against the action of a second energy accumulator relative to the shift drum.
  • the second energy accumulator can be formed, for example, by a torsion spring, for example a so-called leg spring, the first leg of which is in contact with the switching disc and the second leg is in contact with the unlocking element.
  • the unlocking element has an opening for the axial passage of the locking element, the opening extending approximately in an arc around the axis of rotation and having at least two regions whose edges interacting with the locking element are at different radial distances from the axis of rotation.
  • the opening is preferably set back from the radial end of the unlocking element and in turn can have an open or closed edge.
  • the opening preferably has two contiguous areas with openings of different sizes, a first area having a width which is sufficient for the locking element to engage the locking element in the recess in the housing.
  • the locking element and / or the unlocking element have an inclined surface through which the rotational movement of the unlocking element can be deflected into an axial movement of the locking element.
  • the locking element can have a conical section for interacting with the
  • the unlocking element is preferably essentially disk-shaped.
  • the axis of rotation of the unlocking element is preferably essentially disk-shaped.
  • Unlocking element arranged transversely to the direction of insertion of the actuator.
  • an unlocking element is arranged on each side of the switching disk, and the unlocking elements interact with at least one locking element.
  • the locking elements assigned to one another on opposite sides of the switching disk preferably have a common first energy store.
  • the device has a
  • Switch plunger which carries electrical contact elements, axially movable in the housing and is held in contact with a peripheral surface of the switching disc.
  • the contour of the peripheral surface determines the switching travel of the switching plunger.
  • the axis of the switching disk and preferably also the axis of rotation of the unlocking element is arranged transversely to the longitudinal axis of the switching plunger.
  • Fig. 3 shows the safety switch with removed
  • FIG. 4 shows a perspective view of a section through the
  • FIG. 1 shows a safety switch 1 according to the invention with a housing which has a head housing part 2 and a housing cover 3 which can be plugged onto the head housing part 2 and can be fixed to it, for example, by means of screws.
  • the head housing part 2 has a first insertion slot 4 for the actuator 5.
  • the housing cover 3 has a second insertion slot 6 for the actuator 5.
  • the insertion directions specified by the two insertion slots 4, 6 enclose an angle of essentially 90 °.
  • a switching disk 7 is rotatably mounted about an axis 8.
  • the actuator 5 When the actuator 5 is inserted into at least one of the two insertion slots 4, 6, the switching disk 7 is rotated clockwise in the illustration in FIG. 1 and thereby a switching plunger 28 (not shown in FIG. 1) is moved axially and an electrical connection is thereby switched.
  • the guide of the switching plunger 28 and the electrical contact elements are arranged in a switch housing part of the safety switch 1, not shown in FIG. 1, which connects to the plug-in pin 9 formed in one piece by the head housing 2.
  • the switching plunger 28 is guided, inter alia, also through the circular cylindrical bore 10 of the plug pin 9.
  • the safety switch 1 has a locking device for blocking the switching disk 7, which has a locking element 12a which is guided in the switching disk 7 and can be moved against the action of a first force accumulator 1 1 and which, in a position blocking the switching disk 7, engages with an associated recess 13a in Head housing part 2 is.
  • the locking device has a rotatable unlocking element 14a which is arranged next to the switching disk 7 and which can be rotated relative to the switching disk 7 when the actuator 5 is inserted and thereby transfers the locking element 12a into a deblocking position, in particular against the action of the first force accumulator 11 in Pushes the switching disc 7 back. 1 shows the unblocking position of the locking element 12a.
  • FIG. 2 shows the safety switch 1 in the same configuration as shown in FIG. 1, this time, however, with the actuator 5 shown separately, the unlocking position of the locking element 12a of FIG. 1 being maintained and the unlocking element 14a opposite the starting position blocking the switching disc 7 was rotated clockwise relative to the switching disc 7 by an angular amount of, for example, about 15 °.
  • the actuator 5 has at its end facing the switching disc 7 a U-shaped crosspiece 15, which at both ends has a nose 1 5a projecting towards the switching disc 7 or the unlocking element 14a or 14b, 15b.
  • the nose 15a In a first movement section during the insertion of the actuator 5, the nose 15a is in contact with the flank 16 formed by the unlocking element 14a and rotates as a result of the insertion movement the unlocking element 14a relative to the switching disk 7 which has not yet been displaced in the first movement section. Only in a subsequent second movement section does the center piece of the crossbar 15 come into contact with the flank 17 of the switching disk 7 and when the actuator is further inserted, the switching disk 7 and unlocking element 14a become moved clockwise together.
  • the opening 18 provided in the actuator 5 is provided for the passage of the switching disc 7 or the unlocking element 14a when the actuator 5 is fully inserted into the safety switch 1.
  • Both the switching disk 7 and the unlocking element 14a are designed in such a way that the safety switch 1 can be actuated in the same way both via the first insertion slot 4 and via the second insertion slot 6 and the switching disk 7 is moved in the same direction of rotation.
  • the unlocking element 14a has an opening 20 for the passage of the locking element 12a.
  • the opening 20 extends essentially in an arc shape around the axis of rotation 8 with an angular amount of, for example, approximately 45 °.
  • the opening 20 is set back from the radial end of the essentially disk-shaped unlocking element 14a and has a closed edge 21.
  • the edge of the opening 20 can also be at least partially open, in particular open radially on the outside.
  • a closed edge can, for example, with a Execution of the unlocking element 14a in plastic may be advantageous, whereas an open edge may be advantageous in the case of a design in metal.
  • edge portion of the opening 20 cooperating with the locking element 12a can also be formed by the contour of the unlocking element 14a, so that the opening 20 is designed as a radially cutting, suitably shaped in the circumferential direction and extending in the axial direction.
  • the opening 20 has two contiguous areas with openings of different sizes.
  • a first area 22 of the opening 20 has a width which is sufficient for the locking element 12a to engage the locking disk 12 in the recess 13a in the housing.
  • the adjoining second region 23 of the opening 20 is sufficiently small to hold the locking element 12a in its unlocking position.
  • edge sections of the two regions 22, 23 which cooperate with the locking element 12a have different distances from the axis of rotation 8.
  • the locking element 12a and / or the unlocking element 14a have an inclined surface through which the rotational movement of the unlocking element 14a can be deflected into an axial movement of the locking element 12a.
  • the locking element 12a has a conical section 24 which interacts with the essentially cylindrical opening 20 in the unlocking element 14a.
  • FIG. 3 shows the safety switch 1 of FIG. 2 with the unlocking element 14a removed.
  • the second energy accumulator is visible, which is designed as a torsion spring 25 and is arranged around the axis 8.
  • a first leg of the torsion spring 25, which is not visible in FIG. 3, is in contact with the switching disk 7.
  • a second leg 26 of the torsion spring 25 is angled axially at its end and engages in a bore 27 in the unlocking element 14a.
  • the torsion spring 25 causes the restoring force on the unlocking element 14 a when pulling the actuator 5 out of the safety switch 1.
  • the locking element 12a has two cylindrical, in particular circular cylindrical sections, which are connected to one another via the conical section 24.
  • FIG. 4 shows a perspective view of a section through the section rotated through 90 ° compared to the representations of FIGS. 1 to 3
  • Safety switch 1 wherein the locking element 12a is shown in its blocking position, in which it engages with its cylindrical end section 12c in the hollow cylindrical recess 13a in the illustrated embodiment, which is formed in one piece by the head housing part 2.
  • an unlocking element 14a, 14b is arranged on each side of the switching disk 7.
  • the preferably mirror-symmetrical unlocking elements 14a, 14b interact with at least one locking element 12a, 12b.
  • the two locking elements 12a, 12b are of identical design at their ends facing away from one another for engaging in the respectively assigned recess 13a, 13b.
  • the locking elements 12a, 12b are each cylindrical, in particular hollow-cylindrical, and intermesh telescopically.
  • a common first energy store 11 is arranged in the cavity formed in this way and stores mechanical energy when the two locking elements 12a, 12b are moved towards one another.
  • the switching plunger 28 which carries electrical contact elements at its end removed from the cam plate 7 and not shown in FIG. 4, is guided in the safety switch 1 so as to be axially movable and is held in contact with a peripheral surface 29 formed by the switching plate 7.
  • the axis 8 of the switching disk 7 and the unlocking elements 14a, 14b runs transversely to the longitudinal axis 30 of the switching plunger 28 and preferably also transversely to the insertion directions of the actuator 5 specified by the insertion slots 4, 6.

Abstract

A device switches an electrical connection in accordance with the condition of a device to be monitored, especially to a safety switch (1) for a protective device. The safety switch includes a housing (2,3) in which a switch disk (7) is mounted for rotation about an axis (8). An actuator (5) can be inserted for triggering the switching process. A latching device blocks the switch disk (7). The latching device has a latching element (12a, 12b) guided in the switch disk (7) and movable against the effect of a first energy accumulator (11). In a position in which it blocks the switch disk (7), the latching element (12a, 12b) engages an associated recess (13a, 13b) in the housing (2, 3). A rotatable release element (14a, 14b) disposed beside the switch disk (7), is rotatable relative to the switch disk (7) when the actuator (5) is inserted. When the release element (14a, 14b) is rotated, the latching element (12a, 12B) is slid back parallel to the axis (8) into the switch disk (7) against the effect of the first energy accumulator (11), thereby placing it in a release position.

Description

Sicherheitsschalter mit Entriegelungsscheibe Safety switch with unlocking disc
Die vorliegende Erfindung betrifft eine Vorrichtung zum Schalten einer elektrischen Verbindung in Abhängigkeit des Zustandes einer zu überwachenden Einrichtung, insbesondere einen Sicherheitsschalter für eine Schutzeinrichtung.The present invention relates to a device for switching an electrical connection depending on the state of a device to be monitored, in particular a safety switch for a protective device.
Gattungsgemäße Sicherheitsschalter für zu überwachende Sicherheitseinrichtungen beispielsweise an Produktionsanlagen sind aus der DE 43 28 296 C1 bekannt.Generic safety switches for safety devices to be monitored, for example on production systems, are known from DE 43 28 296 C1.
Sicherheitsschalter mit einem Gehäuse, in dem eine Schaltscheibe um eine Achse drehbar gelagert ist und in das ein Betätiger zum Auslösen des Schaltvorgangs einführbar ist, und mit einer Verriegelungseinrichtung zum Blockieren der Schaltscheibe, sind beispielsweise aus der EP 0 778 595 A1 bekannt, die der US 5,898, 143 entspricht. Die Verriegelungseinrichtung weist bei dem dort gezeigten Sicherheitsschalter ein gegen die Wirkung eines Kraftspeichers bewegbares Verriegelungselement auf, das in einer die Schaltscheibe blockierenden Position in Eingriff mit einer Nut auf der Umfangsfläche der Schaltscheibe bringbar ist. Das Verriegelungselement ist dabei im Gehäuse geführt. Der Eingriff in die Schaltscheibe erfolgt in radialer Richtung in Bezug auf die Drehachse. Dabei besteht bei hoher Krafteinwirkung die Gefahr, dass die Umfangsfläche der Schaltscheibe durch das Verriegelungselement beschädigt wird.Safety switches with a housing in which a switching disc is rotatably mounted about an axis and into which an actuator for triggering the switching process can be inserted, and with a locking device for blocking the switching disc, are known, for example, from EP 0 778 595 A1, which the US 5,898,143. In the safety switch shown there, the locking device has a locking element which can be moved against the action of an energy store and which can be brought into engagement with a groove on the peripheral surface of the switching disk in a position blocking the switching disk. The locking element is guided in the housing. The control disc engages in the radial direction with respect to the axis of rotation. In the case of high forces, there is a risk that the peripheral surface of the switching disk will be damaged by the locking element.
Aus der JP 8-203 389 A ist ein Sicherheitsschalter bekannt, bei dem ein im Gehäuse schwenkbar gelagertes Verriegelungselement in radialer Richtung in eine Nut der Schaltscheibe eingreift und dadurch die Drehbewegung der Schaltscheibe blockiert.A safety switch is known from JP 8-203 389 A, in which a locking element pivotably mounted in the housing engages in the radial direction in a groove in the switching disk and thereby blocks the rotary movement of the switching disk.
Aus der JP 7-260 089 A ist ein Sicherheitsschalter bekannt, bei dem eine langgestreckte Verriegelungsstange in radialer Richtung in Bezug auf die Drehachse der Schaltscheibe bewegbar ist und dadurch beim Einführen des Betätigers die Drehbewegung der Schaltscheibe freigibt.From JP 7-260 089 A a safety switch is known in which an elongated locking rod can be moved in the radial direction with respect to the axis of rotation of the switching disk and thereby releases the rotary movement of the switching disk when the actuator is inserted.
Aus der DE 43 38 910 C1 ist ein Sicherheitsschalter bekannt, bei dem ein einstückig ausgebildetes Entriegelungs- und Verriegelungselement beim Einführen des Betätigers radial in Bezug auf die Schaltscheibe bewegbar ist und dadurch die Drehbewegung der Schaltscheibe freigibt.From DE 43 38 910 C1 a safety switch is known in which a one-piece unlocking and locking element can be moved radially with respect to the switching disc when the actuator is inserted, thereby releasing the rotary movement of the switching disc.
Aus der DE 36 09 043 C2 ist ein Sicherheitsschalter mit den Merkmalen des Oberbegriffs des Anspruchs 1 und insbesondere einer Verriegelungseinrichtung bekannt, die ein in der Schaltscheibe geführtes und gegen die Wirkung eines Kraftspeichers bewegbares Verriegelungselement aufweist, das in einer die Schaltscheibe blockierenden Position in Eingriff mit einer zugeordneten Ausnehmung in dem Gehäuse ist. Nachteilig ist dabei, dass das Verriegelungselement unmittelbar von dem einzuführenden Betätiger bewegt wird und dadurch die Manipulationssicherheit herabgesetzt ist. Der Erfindung liegt das Problem zugrunde, einen Sicherheitsschalter bereitzustellen, der dauerhaft eine hohe Manipulationssicherheit gewährleistet. Außerdem soll der Sicherheitsschalter und der zugehörige Betätiger kostengünstig herstellbar sein.From DE 36 09 043 C2 a safety switch with the features of the preamble of claim 1 and in particular a locking device is known which has a locking element which is guided in the switching disc and movable against the action of an energy accumulator and which engages in a position blocking the switching disc an associated recess in the housing. The disadvantage here is that the locking element is moved directly by the actuator to be inserted, thereby reducing the security against manipulation. The invention is based on the problem of providing a safety switch which permanently ensures high security against manipulation. In addition, the safety switch and the associated actuator should be inexpensive to manufacture.
Das Problem ist erfindungsgemäß dadurch gelöst, dass die Verriegelungseinrichtung ein neben der Schaltscheibe angeordnetes drehbares Entriegelungselement aufweist, das beim Einführen des Betätigers relativ zur Schaltscheibe drehbar ist und dabei das Verriegelungselement in eine deblockierende Position überführt. Besondere Ausführungsarten der Erfindung sind in den Unteransprüchen offenbart.The problem is solved according to the invention in that the locking device has a rotatable unlocking element which is arranged next to the switching disc and which can be rotated relative to the switching disc when the actuator is inserted and thereby transfers the locking element to a deblocking position. Particular embodiments of the invention are disclosed in the subclaims.
Erfindungsgemäß ist das Verriegelungselement parallel zur Achse der Schaltscheibe bewegbar und das Entriegelungselement schiebt beim Deblockieren das Verriegelungselement gegen die Wirkung des ersten Kraftspeichers in die Schaltscheibe zurück.According to the invention, the locking element can be moved parallel to the axis of the switching disc, and the unlocking element pushes the locking element back into the switching disc against the action of the first force accumulator when it is unlocked.
Weiter vorzugsweise fällt die Drehachse des Entriegelungselements mit der Achse der Schaltscheibe zusammen. Das Entriegelungselement kann von der Schaltscheibe vorspringende Flanken aufweisen, die mit einem entsprechenden und in der Regel quer zur Einführrichtung verlaufenden Steg des Betätigers zusammenwirken, und/oder der Steg des Betätigers kann derart, beispielsweise U-förmig, ausgebildet sein, dass er in einem ersten Bewegungsabschnitt beim Einführen nur das Entriegelungselement dreht und in einem sich daran anschließenden zweiten Bewegungsabschnitt auch die Schaltscheibe erfasst und dreht. Das Entriegelungselement ist dabei vorzugsweise gegen die Wirkung eines zweiten Kraftspeichers gegenüber der Schaltwalze drehbar. Der zweite Kraftspeicher kann beispielsweise durch eine Torsionsfeder, beispielsweise eine so genannte Schenkelfeder, gebildet sein, deren erster Schenkel in Anlage an der Schaltscheibe ist und deren zweiter Schenkel in Anlage an dem Entriegelungselement ist.More preferably, the axis of rotation of the unlocking element coincides with the axis of the switching disc. The unlocking element can have flanks projecting from the switching disc, which cooperate with a corresponding web of the actuator, which generally runs transversely to the insertion direction, and / or the web of the actuator can be designed, for example in a U-shape, in such a way that it is in a first Movement section when inserting only the unlocking element rotates and also detects and rotates the switching disc in a subsequent second movement section. The unlocking element is preferably rotatable against the action of a second energy accumulator relative to the shift drum. The second energy accumulator can be formed, for example, by a torsion spring, for example a so-called leg spring, the first leg of which is in contact with the switching disc and the second leg is in contact with the unlocking element.
In einer besonderen Ausführungsart weist das Entriegelungselement eine Öffnung für den axialen Durchtritt des Verriegelungselements auf, wobei sich die Öffnung annähernd bogenförmig um die Drehachse erstreckt und mindestens zwei Bereiche aufweist, deren mit dem Verriegelungselement zusammenwirkende Ränder unterschiedlichen radialen Abstand zur Drehachse haben. Die Öffnung ist vorzugsweise vom radialen Ende des Entriegelungselements zurückversetzt und kann ihrerseits einen offenen oder geschlossenen Rand aufweisen. Vorzugsweise weist die Öffnung zwei zusammenhängende Bereiche mit unterschiedlich großen Öffnungen auf, wobei ein erster Bereich eine Weite aufweist, die ausreichend für einen die Schaltscheibe blockierenden Eingriff des Verriegelungselements in die Ausnehmung im Gehäuse ist.In a special embodiment, the unlocking element has an opening for the axial passage of the locking element, the opening extending approximately in an arc around the axis of rotation and having at least two regions whose edges interacting with the locking element are at different radial distances from the axis of rotation. The opening is preferably set back from the radial end of the unlocking element and in turn can have an open or closed edge. The opening preferably has two contiguous areas with openings of different sizes, a first area having a width which is sufficient for the locking element to engage the locking element in the recess in the housing.
Das Verriegelungselement und/oder das Entriegelungselement weisen eine Schrägfläche auf, durch welche die Drehbewegung des Entriegelungselements in eine Axialbewegung des Verriegelungselements umlenkbar ist. Hierzu kann beispielsweise das Verriegelungselement einen konischen Abschnitt für das Zusammenwirken mit demThe locking element and / or the unlocking element have an inclined surface through which the rotational movement of the unlocking element can be deflected into an axial movement of the locking element. For this purpose, for example, the locking element can have a conical section for interacting with the
Entriegelungselement aufweisen, wobei der von dem konischen Abschnitt und der Längsachse des Verriegelungselement eingeschlossene Winkel und/oder die Länge des konischen Abschnitts beispielsweise hinsichtlich Verriegelungskraft und/oder Verriegelungsweg an den jeweiligen Anwendungsfall anpassbar ist.Have unlocking element, the angle enclosed by the conical section and the longitudinal axis of the locking element and / or the length of the conical section, for example with respect Locking force and / or locking path can be adapted to the respective application.
Vorzugsweise ist das Entriegelungselement im Wesentlichen scheibenförmig. Weiter vorzugsweise ist die Drehachse desThe unlocking element is preferably essentially disk-shaped. The axis of rotation of the
Entriegelungselements quer zur Einführrichtung des Betätigers angeordnet.Unlocking element arranged transversely to the direction of insertion of the actuator.
In einer besonderen Ausführungsart ist zu beiden Seiten der Schaltscheibe je ein Entriegelungselement angeordnet, und die Entriegelungselemente wirken mit jeweils mindestens einem Verriegelungselement zusammen. Vorzugsweise weisen die auf gegenüberliegenden Seiten der Schaltscheibe einander zugeordneten Verriegelungselemente einen gemeinsamen ersten Kraftspeicher auf.In a special embodiment, an unlocking element is arranged on each side of the switching disk, and the unlocking elements interact with at least one locking element. The locking elements assigned to one another on opposite sides of the switching disk preferably have a common first energy store.
In einer besonderen Ausführungsart weist die Vorrichtung einenIn a special embodiment, the device has a
Schaltstößel auf, der elektrische Kontaktelemente trägt, in dem Gehäuse axial beweglich geführt und in Anlage an eine Umfangsfläche der Schaltscheibe gehalten ist. Die Kontur der Umfangsfläche bestimmt den Schaltweg des Schaltstößels. Die Achse der Schaltscheibe und vorzugsweise auch die Drehachse des Entriegelungselements ist quer zur Längsachse des Schaltstößels angeordnet.Switch plunger, which carries electrical contact elements, axially movable in the housing and is held in contact with a peripheral surface of the switching disc. The contour of the peripheral surface determines the switching travel of the switching plunger. The axis of the switching disk and preferably also the axis of rotation of the unlocking element is arranged transversely to the longitudinal axis of the switching plunger.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus den Unteransprüchen sowie der nachfolgenden Beschreibung, in der unter Bezugnahme auf die Zeichnungen ein Ausführungsbeispiel imFurther advantages, features and details of the invention emerge from the subclaims and the following description, in which an embodiment in reference to the drawings
Einzelnen beschrieben ist. Dabei können die in den Ansprüchen und in der Beschreibung erwähnten Merkmale jeweils einzeln für sich oder in beliebiger Kombination erfindungswesentlich sein. Fig. 1 zeigt einen erfindungsgemäßen Sicherheitsschalter,Individual is described. The features mentioned in the claims and in the description can each be essential to the invention individually or in any combination. 1 shows a safety switch according to the invention,
Fig. 2 zeigt den Sicherheitsschalter mit separat dargestelltem Betätiger,2 shows the safety switch with an actuator shown separately,
Fig. 3 zeigt den Sicherheitsschalter mit abgenommenemFig. 3 shows the safety switch with removed
Entriegelungselement, Fig. 4 zeigt eine perspektivische Ansicht eines Schnitts durch denRelease element, Fig. 4 shows a perspective view of a section through the
Sicherheitsschalter.Safety switch.
Die Fig. 1 zeigt einen erfindungsgemäßen Sicherheitsschalter 1 mit einem Gehäuse, das ein Kopfgehäuseteil 2 und einen Gehäusedeckel 3 aufweist, der auf das Kopfgehäuseteil 2 aufsteckbar und beispielsweise mittels Schrauben an diesem festlegbar ist. Das Kopfgehäuseteil 2 weist einen ersten Einführschlitz 4 für den Betätiger 5 auf. Der Gehäusedeckel 3 weist einen zweiten Einführschlitz 6 für den Betätiger 5 auf. Die durch die beiden Einführschlitze 4, 6 vorgegebenen Einführrichtungen schließen einen Winkel von im Wesentlichen 90° ein.1 shows a safety switch 1 according to the invention with a housing which has a head housing part 2 and a housing cover 3 which can be plugged onto the head housing part 2 and can be fixed to it, for example, by means of screws. The head housing part 2 has a first insertion slot 4 for the actuator 5. The housing cover 3 has a second insertion slot 6 for the actuator 5. The insertion directions specified by the two insertion slots 4, 6 enclose an angle of essentially 90 °.
In dem Kopfgehäuseteil 2 ist eine Schaltscheibe 7 um eine Achse 8 drehbar gelagert. Beim Einführen des Betätigers 5 in mindestens einen der beiden Einführschlitze 4, 6 wird die Schaltscheibe 7 in der Darstellung der Fig. 1 im Uhrzeigersinn gedreht und dadurch ein in der Fig. 1 nicht dargestellter Schaltstößel 28 axial verfahren und dadurch eine elektrische Verbindung geschaltet. Die Führung des Schaltstößels 28 und die elektrischen Kontaktelemente sind in einem in der Fig. 1 nicht dargestellten Schaltergehäuseteil des Sicherheitsschalters 1 angeordnet, das sich an dem vom Kopfgehäuse 2 einstückig ausgebildeten Steckzapfen 9 anschließt. Die Führung des Schaltstößels 28 erfolgt dabei jedenfalls unter anderem auch durch die kreiszylindrische Bohrung 10 des Steckzapfens 9. Der Sicherheitsschalter 1 weist eine Verriegelungseinrichtung zum Blockieren der Schaltscheibe 7 auf, die ein in der Schaltscheibe 7 geführtes und gegen die Wirkung eines ersten Kraftspeichers 1 1 bewegbares Verriegelungselement 12a aufweist, das in einer die Schaltscheibe 7 blockierenden Position in Eingriff mit einer zugeordneten Ausnehmung 13a im Kopfgehäuseteil 2 ist. Zum Entriegeln weist die Verriegelungseinrichtung ein neben der Schaltscheibe 7 angeordnetes drehbares Entriegelungselement 14a auf, das beim Einführen des Betätigers 5 relativ zur Schaltscheibe 7 drehbar ist und dabei das Verriegelungselement 12a in eine deblockierende Position überführt, insbesondere gegen die Wirkung des ersten Kraftspeichers 1 1 in die Schaltscheibe 7 zurückschiebt. In der Fig. 1 ist die deblockierende Position des Verriegelungselements 12a dargestellt.In the head housing part 2, a switching disk 7 is rotatably mounted about an axis 8. When the actuator 5 is inserted into at least one of the two insertion slots 4, 6, the switching disk 7 is rotated clockwise in the illustration in FIG. 1 and thereby a switching plunger 28 (not shown in FIG. 1) is moved axially and an electrical connection is thereby switched. The guide of the switching plunger 28 and the electrical contact elements are arranged in a switch housing part of the safety switch 1, not shown in FIG. 1, which connects to the plug-in pin 9 formed in one piece by the head housing 2. In any case, the switching plunger 28 is guided, inter alia, also through the circular cylindrical bore 10 of the plug pin 9. The safety switch 1 has a locking device for blocking the switching disk 7, which has a locking element 12a which is guided in the switching disk 7 and can be moved against the action of a first force accumulator 1 1 and which, in a position blocking the switching disk 7, engages with an associated recess 13a in Head housing part 2 is. For unlocking, the locking device has a rotatable unlocking element 14a which is arranged next to the switching disk 7 and which can be rotated relative to the switching disk 7 when the actuator 5 is inserted and thereby transfers the locking element 12a into a deblocking position, in particular against the action of the first force accumulator 11 in Pushes the switching disc 7 back. 1 shows the unblocking position of the locking element 12a.
Die Fig. 2 zeigt den Sicherheitsschalter 1 in der gleichen Konfiguration wie in der Fig. 1 dargestellt, diesmal allerdings mit separat dargestelltem Betätiger 5, wobei die deblockierende Position des Verriegelungselements 12a der Fig. 1 beibehalten und dadurch erreicht ist, dass das Entriegelungselement 14a gegenüber der die Schaltscheibe 7 blockierenden Ausgangsposition relativ zur Schaltscheibe 7 um einen Winkelbetrag von beispielsweise etwa 1 5° im Uhrzeigersinn gedreht wurde. Dies ist dadurch erreicht, dass der Betätiger 5 an seinem der Schaltscheibe 7 zugewandten Ende einen U-förmigen Quersteg 15 aufweist, der an seinen beiden Enden jeweils eine in Richtung auf die Schaltscheibe 7 bzw. das Entriegelungselement 14a bzw. 14b vorspringende Nase 1 5a, 15b aufweist.FIG. 2 shows the safety switch 1 in the same configuration as shown in FIG. 1, this time, however, with the actuator 5 shown separately, the unlocking position of the locking element 12a of FIG. 1 being maintained and the unlocking element 14a opposite the starting position blocking the switching disc 7 was rotated clockwise relative to the switching disc 7 by an angular amount of, for example, about 15 °. This is achieved in that the actuator 5 has at its end facing the switching disc 7 a U-shaped crosspiece 15, which at both ends has a nose 1 5a projecting towards the switching disc 7 or the unlocking element 14a or 14b, 15b.
In einem ersten Bewegungsabschnitt beim Einführen des Betätigers 5 ist die Nase 15a in Anlage an der vom Entriegelungselement 14a ausgebildeten Flanke 16 und dreht infolge der Einführbewegung das Entriegelungselement 14a relativ zur im ersten Bewegungsabschnitt noch unverlagerten Schaltscheibe 7. Erst in einem sich daran anschließenden zweiten Bewegungsabschnitt kommt das Mittelstück des Querstegs 1 5 in Anlage an die Flanke 1 7 der Schaltscheibe 7 und beim weiteren Einführen des Betätigers werden Schaltscheibe 7 und Entriegelungselement 14a gemeinsam im Uhrzeigersinn bewegt.In a first movement section during the insertion of the actuator 5, the nose 15a is in contact with the flank 16 formed by the unlocking element 14a and rotates as a result of the insertion movement the unlocking element 14a relative to the switching disk 7 which has not yet been displaced in the first movement section. Only in a subsequent second movement section does the center piece of the crossbar 15 come into contact with the flank 17 of the switching disk 7 and when the actuator is further inserted, the switching disk 7 and unlocking element 14a become moved clockwise together.
Die im Betätiger 5 vorgesehene Öffnung 18 ist für den Durchtritt der Schaltscheibe 7 bzw. des Entriegelungselements 14a beim vollständigen Einführen des Betätigers 5 in den Sicherheitsschalter 1 vorgesehen. Sowohl die Schaltscheibe 7 als auch das Entriegelungselement 14a sind so ausgestaltet, dass der Sicherheitsschalter 1 gleichwirkend sowohl über den ersten Einführungsschlitz 4 als auch über den zweiten Einführungsschlitz 6 betätigt werden kann und dabei die Schaltscheibe 7 in übereinstimmender Drehrichtung bewegt wird. Alternativ oder ergänzend wäre es möglich, den zweiten Einführschlitz 6 nahe dem dem ersten Einführschlitz 4 zugewandten Rand des Gehäusedeckels 3 vorzusehen und demzufolge die Kurvenscheibe 7 je nach Wahl des Einführschlitzes 4, 6 in beide Drehrichtungen zu drehen.The opening 18 provided in the actuator 5 is provided for the passage of the switching disc 7 or the unlocking element 14a when the actuator 5 is fully inserted into the safety switch 1. Both the switching disk 7 and the unlocking element 14a are designed in such a way that the safety switch 1 can be actuated in the same way both via the first insertion slot 4 and via the second insertion slot 6 and the switching disk 7 is moved in the same direction of rotation. As an alternative or in addition, it would be possible to provide the second insertion slot 6 near the edge of the housing cover 3 facing the first insertion slot 4 and consequently to rotate the cam plate 7 in both directions of rotation depending on the choice of the insertion slot 4, 6.
Das Entriegelungselement 14a weist eine Öffnung 20 für den Durchtritt des Verriegelungselements 12a auf. Die Öffnung 20 erstreckt sich im Wesentlichen bogenförmig um die Drehachse 8 mit einem Winkelbetrag von beispielsweise etwa 45°. Die Öffnung 20 ist dabei im dargestellten Ausführungsbeispiel vom radialen Ende des im Wesentlichen scheibenförmigen Entriegelungselements 14a zurückversetzt und weist einen geschlossenen Rand 21 auf. Alternativ hierzu kann der Rand der Öffnung 20 auch mindestens teilweise offen sein, insbesondere radial außen offen sein. Ein geschlossener Rand kann beispielsweise bei einer Ausführung des Entriegelungselements 14a in Kunststoff vorteilhaft sein, wogegen ein offener Rand bei einer Ausführung in Metall vorteilhaft sein kann. Weiterhin kann der mit dem Verriegelungselement 12a zusammenwirkende Randabschnitt der Öffnung 20 auch durch die Kontur des Entriegelungselements 14a gebildet sein, so dass die Öffnung 20 als radial einschneidende, in Umfangsrichtung geeignet geformte und sich in Axial richtung erstreckende Nut ausgebildet ist.The unlocking element 14a has an opening 20 for the passage of the locking element 12a. The opening 20 extends essentially in an arc shape around the axis of rotation 8 with an angular amount of, for example, approximately 45 °. In the exemplary embodiment shown, the opening 20 is set back from the radial end of the essentially disk-shaped unlocking element 14a and has a closed edge 21. As an alternative to this, the edge of the opening 20 can also be at least partially open, in particular open radially on the outside. A closed edge can, for example, with a Execution of the unlocking element 14a in plastic may be advantageous, whereas an open edge may be advantageous in the case of a design in metal. Furthermore, the edge portion of the opening 20 cooperating with the locking element 12a can also be formed by the contour of the unlocking element 14a, so that the opening 20 is designed as a radially cutting, suitably shaped in the circumferential direction and extending in the axial direction.
Die Öffnung 20 weist zwei zusammenhängende Bereiche mit unterschiedlich großen Öffnungen auf. Ein erster Bereich 22 der Öffnung 20 weist eine Weite auf, die ausreichend für einen die Schaltscheibe 7 blockierenden Eingriff des Verriegelungselements 12a in die Ausnehmung 13a ins Gehäuse ist. Der sich daran anschließende zweite Bereich 23 der Öffnung 20 ist demgegenüber ausreichend klein, um das Verriegelungselement 12a in seiner deblockierenden Position zu halten.The opening 20 has two contiguous areas with openings of different sizes. A first area 22 of the opening 20 has a width which is sufficient for the locking element 12a to engage the locking disk 12 in the recess 13a in the housing. In contrast, the adjoining second region 23 of the opening 20 is sufficiently small to hold the locking element 12a in its unlocking position.
Wesentlich im dargestellten Ausführungsbeispiel ist dabei, dass die mit dem Verriegelungselement 12a zusammenwirkenden Randabschnitte der beiden Bereiche 22, 23 unterschiedliche Abstände zur Drehachse 8 aufweisen.It is essential in the exemplary embodiment shown that the edge sections of the two regions 22, 23 which cooperate with the locking element 12a have different distances from the axis of rotation 8.
Das Verriegelungselement 12a und/oder das Entriegelungselement 14a, letzteres insbesondere im Bereich der Öffnung 20, weisen eine Schrägfläche auf, durch welche die Drehbewegung des Entriegelungselements 14a in eine Axialbewegung des Verriegelungselements 12a umlenkbar ist. Im dargestellten Ausführungsbeispiel weist das Verriegelungselement 12a einen konischen Abschnitt 24 auf, der mit der im Wesentlichen zylindrischen Öffnung 20 im Entriegelungselement 14a zusammenwirkt. Die Fig. 3 zeigt den Sicherheitsschalter 1 der Fig. 2 mit abgenommenem Entriegelungselement 14a. Dadurch ist der zweite Kraftspeicher sichtbar, der als Torsionsfeder 25 ausgeführt und um die Achse 8 herum angeordnet ist. Ein erster, in der Darstellung der Fig. 3 nicht sichtbarer Schenkel der Torsionsfeder 25 ist in Anlage an der Schaltscheibe 7. Ein zweiter Schenkel 26 der Torsionsfeder 25 ist an seinem Ende axial abgewinkelt und greift in eine Bohrung 27 des Entriegelungselements 14a ein. Die Torsionsfeder 25 bewirkt die Rückstell kraft auf das Entriegelungselement 14a beim Herausziehen des Betätigers 5 aus dem Sicherheitsschalter 1 . Das Verriegelungselement 12a weist zwei zylindrische, insbesondere kreiszylindrische Abschnitte auf, die über den konischen Abschnitt 24 miteinander verbunden sind.The locking element 12a and / or the unlocking element 14a, the latter in particular in the region of the opening 20, have an inclined surface through which the rotational movement of the unlocking element 14a can be deflected into an axial movement of the locking element 12a. In the exemplary embodiment shown, the locking element 12a has a conical section 24 which interacts with the essentially cylindrical opening 20 in the unlocking element 14a. FIG. 3 shows the safety switch 1 of FIG. 2 with the unlocking element 14a removed. As a result, the second energy accumulator is visible, which is designed as a torsion spring 25 and is arranged around the axis 8. A first leg of the torsion spring 25, which is not visible in FIG. 3, is in contact with the switching disk 7. A second leg 26 of the torsion spring 25 is angled axially at its end and engages in a bore 27 in the unlocking element 14a. The torsion spring 25 causes the restoring force on the unlocking element 14 a when pulling the actuator 5 out of the safety switch 1. The locking element 12a has two cylindrical, in particular circular cylindrical sections, which are connected to one another via the conical section 24.
Die Fig. 4 zeigt eine gegenüber den Darstellungen der Figuren 1 bis 3 um 90° gedrehte perspektivische Ansicht eines Schnitts durch denFIG. 4 shows a perspective view of a section through the section rotated through 90 ° compared to the representations of FIGS. 1 to 3
Sicherheitsschalter 1 , wobei das Verriegelungselement 12a in seiner blockierenden Position dargestellt ist, in der es mit seinem zylindrischen Endabschnitt 12c in die im dargestellten Ausführungsbeispiel hohlzylindrische Ausnehmung 13a eingreift, die vom Kopfgehäuseteil 2 einstückig ausgebildet ist. Wie aus dieser Darstellung zu entnehmen ist, ist zu beiden Seiten der Schaltscheibe 7 je ein Entriegelungselement 14a, 14b angeordnet. Die vorzugsweise spiegelsymmetrischen Entriegelungselemente 14a, 14b wirken mit jeweils mindestens einem Verriegelungselement 12a, 12b zusammen. Die beiden Verriegelungselemente 12a, 12b sind an ihren einander abgewandten Enden für den Eingriff in die jeweils zugeordnete Ausnehmung 13a, 13b identisch ausgebildet. An den einander zugewandten Enden sind die Verriegelungselemente 12a, 12b jeweils zylindrisch, insbesondere hohlzylindrisch ausgebildet und greifen teleskopartig ineinander. Innerhalb des so gebildeten Hohlraums ist ein gemeinsamer erster Kraftspeicher 1 1 angeordnet, der beim Aufeinanderzubewegen der beiden Verriegelungselemente 12a, 12b mechanische Energie speichert.Safety switch 1, wherein the locking element 12a is shown in its blocking position, in which it engages with its cylindrical end section 12c in the hollow cylindrical recess 13a in the illustrated embodiment, which is formed in one piece by the head housing part 2. As can be seen from this illustration, an unlocking element 14a, 14b is arranged on each side of the switching disk 7. The preferably mirror-symmetrical unlocking elements 14a, 14b interact with at least one locking element 12a, 12b. The two locking elements 12a, 12b are of identical design at their ends facing away from one another for engaging in the respectively assigned recess 13a, 13b. At the mutually facing ends, the locking elements 12a, 12b are each cylindrical, in particular hollow-cylindrical, and intermesh telescopically. Within A common first energy store 11 is arranged in the cavity formed in this way and stores mechanical energy when the two locking elements 12a, 12b are moved towards one another.
Der Schaltstößel 28, der an seinem der Kurvenscheibe 7 entfernten und in der Fig. 4 nicht dargestellten Ende elektrische Kontaktelemente trägt, ist in dem Sicherheitsschalter 1 axial beweglich geführt und in Anlage an eine von der Schaltscheibe 7 ausgebildeten Umfangsfläche 29 gehalten. Die Achse 8 der Schaltscheibe 7 und der Entriegelungselemente 14a, 14b verläuft dabei quer zur Längsachse 30 des Schaltstößels 28 und vorzugsweise auch quer zu den durch die Einführschlitze 4, 6 vorgegebenen Einführrichtungen des Betätigers 5. The switching plunger 28, which carries electrical contact elements at its end removed from the cam plate 7 and not shown in FIG. 4, is guided in the safety switch 1 so as to be axially movable and is held in contact with a peripheral surface 29 formed by the switching plate 7. The axis 8 of the switching disk 7 and the unlocking elements 14a, 14b runs transversely to the longitudinal axis 30 of the switching plunger 28 and preferably also transversely to the insertion directions of the actuator 5 specified by the insertion slots 4, 6.

Claims

P a t e n t a n s p r ü c h e Patent claims
1 . Vorrichtung zum Schalten einer elektrischen Verbindung in Abhängigkeit des Zustandes einer zu überwachenden Einrichtung, insbesondere Sicherheitsschalter (1 ) für eine Schutzeinrichtung, mit einem Gehäuse (2, 3), in dem eine Schaltscheibe (7) um eine Achse (8) drehbar gelagert ist und in das ein Betätiger (5) zum1 . Device for switching an electrical connection depending on the state of a device to be monitored, in particular a safety switch (1) for a protective device, with a housing (2, 3) in which a switching disc (7) is rotatably mounted about an axis (8) and in which an actuator (5) for
Auslösen des Schaltvorgangs einführbar ist, und einer Verriegelungseinrichtung zum Blockieren der Schaltscheibe (7), wobei die Verriegelungseinrichtung ein in der Schaltscheibe (7) geführtes und gegen die Wirkung eines ersten Kraftspeichers (1 1 ) bewegbares Verriegelungselement (12a, 12b) aufweist, das in einer die Schaltscheibe (7) blockierenden Position in Eingriff mit einer zugeordneten Ausnehmung (13a, 13b) in dem Gehäuse (2, 3) ist, dadurch gekennzeichnet, dass die Verriegelungseinrichtung ein neben der Schaltscheibe (7) angeordnetes drehbares Entriegelungselement (14a, 14b) aufweist, das beim Einführen desTriggering of the switching process can be introduced, and a locking device for blocking the switching disc (7), the locking device having a locking element (12a, 12b) which is guided in the switching disc (7) and can be moved against the action of a first energy store (11) a position blocking the switching disc (7) is in engagement with an associated recess (13a, 13b) in the housing (2, 3), characterized in that the locking device has a rotatable unlocking element (14a, 14b) arranged next to the switching disc (7) has that when inserting the
Betätigers (5) relativ zur Schaltscheibe (7) drehbar ist, und dass beim Drehen des Entriegelungselements (14a, 14b) das Verriegelungselement (12a, 12b) gegen die Wirkung des ersten Kraftspeichers (1 1 ) parallel zur Achse (8) in die Schaltscheibe (7) zurückschiebbar ist und damit in eine deblockierende Position überführbar ist.Actuator (5) is rotatable relative to the switching disc (7), and that when the unlocking element (14a, 14b) is rotated, the locking element (12a, 12b) against the action of the first energy accumulator (1 1) parallel to the axis (8) in the switching disc (7) can be pushed back and can thus be transferred to a deblocking position.
2. Vorrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass das Entriegelungselement (14a, 14b) eine Öffnung (20) für den Durchtritt des Verriegelungselement (12a, 12b) aufweist. 2. Device according to claim 1, characterized in that the unlocking element (14a, 14b) has an opening (20) for the passage of the locking element (12a, 12b).
3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass die Öffnung (20) sich um die Drehachse (8) erstreckt und zwei Bereiche (22, 23) aufweist, deren Ränder unterschiedliche Abstände zur Drehachse (8) haben.3. Device according to claim 2, characterized in that the opening (20) extends around the axis of rotation (8) and has two regions (22, 23) whose edges have different distances from the axis of rotation (8).
4. Vorrichtung nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass die Öffnung (20) nach radial außen offen ist.4. The device according to claim 2 or 3, characterized in that the opening (20) is open radially outwards.
5. Vorrichtung nach einem der Ansprüche 2 bis 4, dadurch gegenzeichnet, dass die Öffnung (20) einen geschlossenen Rand5. Device according to one of claims 2 to 4, characterized in that the opening (20) has a closed edge
(21 ) und zwei zusammenhängende Bereiche (22, 23) mit unterschiedlich großen Weiten aufweist.(21) and two contiguous areas (22, 23) with different sizes.
6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass ein erster Bereich (22) der Öffnung (20) eine Weite aufweist, die ausreichend für einen die Schaltscheibe (7) blockierenden Eingriff des Verriegelungselements (12a, 12b) in die Ausnehmung (13a, 13b) im Gehäuse (2, 3) ist.6. The device according to claim 5, characterized in that a first region (22) of the opening (20) has a width which is sufficient for an engagement of the locking element (12a, 12b) into the recess (13a, 12b) blocking the switching disc (7). 13b) in the housing (2, 3).
7. Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass das Verriegelungselement (12a, 12b) und/oder das Entriegelungselement (14a, 14b) eine Schrägfläche aufweisen, durch welche die Drehbewegung des Entriegelungselements (14a, 14b) in eine Axialbewegung des Verriegelungselements (12a, 12b) umlenkbar ist.7. Device according to one of claims 1 to 6, characterized in that the locking element (12a, 12b) and / or the unlocking element (14a, 14b) have an inclined surface through which the rotational movement of the unlocking element (14a, 14b) in an axial movement of the locking element (12a, 12b) can be deflected.
8. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass das Verriegelungselement (12a, 12b) einen konischen- Abschnitt (24) für das Zusammenwirken mit dem Entriegelungselement (14a, 14b) aufweist.8. The device according to claim 7, characterized in that the locking element (12a, 12b) has a conical section (24) for cooperation with the unlocking element (14a, 14b).
9. Vorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass zu beiden Seiten der Schaltscheibe (7) je ein9. Device according to one of claims 1 to 8, characterized in that on each side of the switching disc (7)
Entriegelungselement (14a, 14b) angeordnet ist, dass die Entriegelungselemente (14a, 14b) mit jeweils mindestens einem Verriegelungselement (12a, 12b) zusammenwirken, und dass die auf gegenüberliegenden Seiten der Schaltscheibe (7) einander zugeordneten Verriegelungselemente (12a, 12b) einen gemeinsamen ersten Kraftspeicher (1 1 ) aufweisen.Unlocking element (14a, 14b) is arranged such that the unlocking elements (14a, 14b) interact with at least one locking element (12a, 12b), and that the locking elements (12a, 12b) assigned to one another on opposite sides of the switching disc (7) have a common one have first energy accumulator (1 1).
10. Vorrichtung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass ein Schaltstößel (28), der elektrische Kontaktelemente trägt, in dem Gehäuse (2, 3) axial beweglich geführt und in Anlage an eine Umfangsfläche (29) der Schaltscheibe (7) gehalten ist, und dass die Achse (8) der Schaltscheibe (7) quer zur Längsachse (30) des Schaltstößels (28) angeordnet ist. 10. Device according to one of claims 1 to 9, characterized in that a switching plunger (28), which carries electrical contact elements, axially movable in the housing (2, 3) and in contact with a peripheral surface (29) of the switching disc (7 ) is held, and that the axis (8) of the switching disc (7) is arranged transversely to the longitudinal axis (30) of the switching plunger (28).
EP02719785A 2001-02-10 2002-02-08 Safety switch with unlatching disc Expired - Lifetime EP1366503B1 (en)

Applications Claiming Priority (3)

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DE10106228 2001-02-10
DE10106228A DE10106228A1 (en) 2001-02-10 2001-02-10 Safety switch with unlocking disc
PCT/EP2002/001334 WO2002065496A1 (en) 2001-02-10 2002-02-08 Safety switch with unlatching disc

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EP1366503B1 EP1366503B1 (en) 2004-08-04

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US (1) US6861597B2 (en)
EP (1) EP1366503B1 (en)
JP (1) JP2004518267A (en)
AT (1) ATE272891T1 (en)
DE (2) DE10106228A1 (en)
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WO (1) WO2002065496A1 (en)

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Also Published As

Publication number Publication date
JP2004518267A (en) 2004-06-17
US6861597B2 (en) 2005-03-01
EP1366503B1 (en) 2004-08-04
ATE272891T1 (en) 2004-08-15
US20030227736A1 (en) 2003-12-11
DE50200756D1 (en) 2004-09-09
ES2224061T3 (en) 2005-03-01
WO2002065496A1 (en) 2002-08-22
DE10106228A1 (en) 2002-09-19

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