EP0776020B1 - Safety switch device - Google Patents

Safety switch device Download PDF

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Publication number
EP0776020B1
EP0776020B1 EP96118491A EP96118491A EP0776020B1 EP 0776020 B1 EP0776020 B1 EP 0776020B1 EP 96118491 A EP96118491 A EP 96118491A EP 96118491 A EP96118491 A EP 96118491A EP 0776020 B1 EP0776020 B1 EP 0776020B1
Authority
EP
European Patent Office
Prior art keywords
actuating
protective cover
fastening member
connecting member
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.)
Expired - Lifetime
Application number
EP96118491A
Other languages
German (de)
French (fr)
Other versions
EP0776020A1 (en
Inventor
Helmut Letzel
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.)
KA Schmersal GmbH and Co KG
Original Assignee
KA Schmersal 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
Priority claimed from DE1995143769 external-priority patent/DE19543769A1/en
Priority claimed from DE1996132963 external-priority patent/DE19632963C1/en
Application filed by KA Schmersal GmbH and Co KG filed Critical KA Schmersal GmbH and Co KG
Publication of EP0776020A1 publication Critical patent/EP0776020A1/en
Application granted granted Critical
Publication of EP0776020B1 publication Critical patent/EP0776020B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/16—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. for a door switch, a limit switch, a floor-levelling switch of a lift
    • H01H3/161—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. for a door switch, a limit switch, a floor-levelling switch of a lift for actuation by moving a closing member, e.g. door, cover or lid
    • H01H3/162—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. for a door switch, a limit switch, a floor-levelling switch of a lift for actuation by moving a closing member, e.g. door, cover or lid associated with a hinge of the closing member
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
    • H01H19/02—Details
    • H01H19/10—Movable parts; Contacts mounted thereon
    • H01H19/14—Operating parts, e.g. turn knob
    • H01H19/18—Operating parts, e.g. turn knob adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. door switch, limit switch, floor-levelling switch of a lift
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/46—Driving mechanisms, i.e. for transmitting driving force to the contacts using rod or lever linkage, e.g. toggle
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2101—Cams
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2101—Cams
    • Y10T74/2102—Adjustable
    • Y10T74/2106—Timer devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2101—Cams
    • Y10T74/2107—Follower

Definitions

  • the invention relates to a safety switching device according to the preamble of claim 1.
  • DE-A-1 553 550 discloses a locking device for a smoke flap known that opens via a temperature sensitive fuse, with a holder for one in the inside of the flap movably mounted locking bolt is attached by a locking member is locked when the fuse is triggered by gravity or spring action releases the lock bolt. Monitoring the protective flap in is not related to their open and closed position intended.
  • DE 40 13 994 A1 describes a safety switching device according to the preamble of claim 1
  • Locking device rotating about an axis, such as a door is known in which a disk-shaped actuating cam is provided, the plunger of two switches at the same time via an actuating device operated.
  • the actuating cam sits on the axis of the locking device, so that assembly and adjustment are problematic.
  • the locking device must have a specially suitable axis. A retrofitting is also problematic in this respect.
  • the object of the invention is a safety switching device to create according to the preamble of claim 1, which is easy to assemble and is to be adjusted.
  • Fig. 1 shows a side view of a safety switching device.
  • FIGS. 2 and 3 show a further side view and plan view Embodiment of a fastener for a safety switching device.
  • FIGS. 4 and 5 show an embodiment of a switching device a safety switching device in two different switching states correspondingly opened or closed protective cover.
  • FIG. 8 and 9 show a side view and an exploded view further embodiments of switching devices for a safety switching device.
  • FIGS. 10 and 11 show a further embodiment of a fastening element in top view in two different positions.
  • the safety switching device shown in FIGS. 1 to 3 comprises an electrical switching device 1 with a housing 2, which on a fixed part 3, such as a frame of a protective cover 4 a Machine housing or a fence in dangerous rooms or Machine systems, adjacent to that around an axis of movement between one open and a closed position swiveling protective cover 4 in the form of a protective door, a protective window or one Safety flap is attached.
  • the axis of movement is the Axis of a bearing in the housing 2 and protruding from this Actuating shaft 5, whose end 6 protrudes from the housing 2 this embodiment has a reduced diameter.
  • On the end 6 is a connecting element 7 placed in at least two levels articulated and preferably designed as a universal joint and has two sleeves 8, 9, which have a center piece 10 and universal joints 11 are connected to one another by cardan joints.
  • the sleeve 8 is placed on the end 6 of the actuating shaft 5 and optionally additionally secured by a pin while the sleeve 9 onto an axis 12, which is preferably corrugated in the longitudinal direction is stuck.
  • an adjusting screw 13 is provided to a To be able to make longitudinal adjustment of the sleeve 8 to the axis 12 and sleeve 8 and axis 12 to rotate together.
  • the axis 12 is located on the protective cover 4 Fastening element 15 attached by means of screws 14.
  • the axis 12 is rotatably received by a bore 16 in the fastening element 15, the bore 16 adjacent a side edge of the fastener 15 (more or less parallel to the axis in the assembled state to the actuating shaft 5) is arranged.
  • the fastener 15 has two right angles to the hole 16 holes 17 that receive the screws 14.
  • the holes 17 are designed as elongated holes and in particular are stepped, so that the screws 14 can be sunk.
  • the fastening element 15 has two of corresponding at least partially threaded bores 18, threaded locking pins 19, each of the parallel Bores 18 runs transversely to the associated hole 17 and this crosses so that the screw 14 received by the hole 17 is not without loosening the associated locking pin 19 is removable.
  • the switching device 1 is actuated by pivoting the protective cover 4 in the open or closed position the connecting element 7, due to the arrangement and / or assembly conditional deviations in the alignment of the actuating shaft 5 and the axis 12 can be compensated for by the cardan joint-like connecting element 7.
  • the switching device 1 shown in FIGS. 4 and 5 there are two Forcibly isolating switch 20 is provided, which are mutually via a disc-shaped actuating cams 21 can be actuated, so that a switch 20 the open and the other the closed position of the Protective cover 4 can monitor.
  • the switches 20 have fixed contacts 22 on, via contact bridges 23 on one over the actuating cam 21 sliding actuating plunger 24 according to the position of the Protective cover 4 can be connected.
  • the actuating cam 21 in axially superposed planes a cam projection 25 and a notch 26, which are offset by 90 ° to each other.
  • a small opening angle of, for example, 3 ° 1 on.
  • the switching device 1 is at the upper end of a post 27 attached, the connecting element 7 additionally an extension piece 28 includes.
  • the switching device 1 is directly on a frame element 29 of a part 3 designed as a fence.
  • the actuating shaft 5 carries a roller-shaped Actuating cams 21 with two axially superimposed actuating sections 27a, 27b.
  • the lower operating portion 27a has a cylindrical one Scope of the actuating cam 21 provided notch 26 for locking Recording the actuating plunger 24 of one of the switches 20, the is actuated when the protective cover 4 is opened.
  • the upper actuating section 27b has a cylindrical, reduced diameter in this area of the actuating cam 21 projecting cam projection 25 in the axial direction about the notch 26, in which the actuating plunger 24 of the corresponding switch 20 supports when the protective cover 4 in closed position.
  • the cam projection 25 extends out to the periphery of the operating portion 27a.
  • the associated one Switch 20 is also related, but in the opposite direction to the other switch 20, switched when the protective cover 7 is opened becomes.
  • the two switches 20 are in the axial direction of the actuating shaft 5 arranged one above the other.
  • the housing 2 can also an actuating shaft 5 with a roller-shaped one on each side Actuation cams 21 can be mounted. Can also be seen For safety reasons, an additional one having a notch 26 in parallel Actuation cam 21 'with an additional switch (not shown) may be provided.
  • the actuating shafts 5 have holes for inserting one Connecting piece 30 of the connecting element 7 or a cover 31 on.
  • the switching device 1 can be selected on one side or the other with the fastening element 15 connect. If the middle actuating cam 21 'is omitted, two separate ones Monitoring possible.
  • the fastening element 15 shown in FIGS. 10 to 13 comprises two jaws 32, 33 which can be pivoted via a hinge 34 are interconnected.
  • the axis 12 forms the Axis of rotation of the hinge 34.
  • the jaw 33 has a recess 35 Inclusion of the other jaw 32 provided with the holes 17.
  • the Holes 17 are in the position shown in FIG. 10 of the two Jaws 32, 33 covered so that the screws 14 are not accessible.
  • the two jaws 32, 33 are received by a recessed Bolts 36 connected to each other, which in the jaw 33 for Receiving the bolt 36 provided recess 37 designed so is that the screw bolt 36 in a slightly pivoted jaw 32 Threaded hole 38 can be screwed.
  • the jaw 33 takes an adjusting screw 39, which can be supported at one end on the jaw 32, so that the two jaws 32, 33 together via the screw bolt 36 are braced.
  • a safety switching device of the type described easy to assemble and adjust and easily afterwards and without the need for additional parts on the protective cover 4 or attach to the fixed part 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Power-Operated Mechanisms For Wings (AREA)

Description

Die Erfindung betrifft eine Sicherheitsschaltvorrichtung nach dem Oberbegriff des Anspruchs 1.The invention relates to a safety switching device according to the preamble of claim 1.

Aus DE-A-1 553 550 ist eine Sperrvorrichtung für eine Rauchklappe bekannt, die sich über eine temperaturempfindliche Sicherung öffnet, wobei an der Innenseite der Klappe ein Halter für einen in diesem beweglich gelagerten Sperriegel befestigt ist, der durch ein Sperrglied gesperrt ist, das beim Auslösen der Sicherung durch Schwerkraft oder Federwirkung den Sperriegel freigibt. Eine Überwachung der Schutzklappe in bezug auf ihre geöffnete und geschlossene Stellung ist hierbei nicht vorgesehen.DE-A-1 553 550 discloses a locking device for a smoke flap known that opens via a temperature sensitive fuse, with a holder for one in the inside of the flap movably mounted locking bolt is attached by a locking member is locked when the fuse is triggered by gravity or spring action releases the lock bolt. Monitoring the protective flap in is not related to their open and closed position intended.

Aus DE 40 13 994 A1 ist eine Sicherheitsschaltvorrichtung gemäß dem Oberbegriff des Anspruchs 1 für um eine Achse sich drehende Verschlußeinrichtung, etwa eine Tür, bekannt, bei der ein scheibenförmiger Betätigungsnocken vorgesehen ist, der über eine Stelleinrichtung die Stößel von zwei Schaltern gleichzeitig betätigt. Hierbei sitzt der Betätigungsnocken auf der Achse der Verschlußeinrichtung, so daß Montage und Justage problematisch sind. Die-Verschlußeinrichtung muß eine speziell geeignete Achse besitzen. Ein nachträgliches Anbringen ist auch insofern problematisch.DE 40 13 994 A1 describes a safety switching device according to the preamble of claim 1 Locking device rotating about an axis, such as a door, is known in which a disk-shaped actuating cam is provided, the plunger of two switches at the same time via an actuating device operated. Here the actuating cam sits on the axis of the locking device, so that assembly and adjustment are problematic. The locking device must have a specially suitable axis. A retrofitting is also problematic in this respect.

Aufgabe der Erfindung ist es, ein Sicherheitsschaltvorrichtung nach dem Oberbegriff des Anspruchs 1 zu schaffen, die einfach zu montieren und zu justieren ist.The object of the invention is a safety switching device to create according to the preamble of claim 1, which is easy to assemble and is to be adjusted.

Diese Aufgabe wird entsprechend dem Anspruch 1 gelöst.This task will be done accordingly Claim 1 solved.

Weitere Ausgestaltungen der Erfindung sind der nachfolgenden Beschreibung und den Unteransprüchen zu entnehmen.Further refinements of the invention are as follows Description and the dependent claims.

Die Erfindung wird nachstehend anhand von in den beigefügten Abbildungen dargestellten Ausführungsbeispielen näher erläutert.The invention is described below with reference to the accompanying figures Illustrated embodiments illustrated in more detail.

Fig. 1 zeigt in Seitenansicht eine Sicherheitsschaltvorrichtung.Fig. 1 shows a side view of a safety switching device.

Fig. 2 und 3 zeigen in Seitenansicht bzw. Draufsicht eine weitere Ausführungsform eines Befestigungselements für eine Sicherheitsschaltvorrichtung.2 and 3 show a further side view and plan view Embodiment of a fastener for a safety switching device.

Fig. 4 und 5 zeigen eine Ausführungsform eines Schaltgeräts einer Sicherheitsschaltvorrichtung in zwei verschiedenen Schaltzuständen entsprechend geöffneter bzw. geschlossener Schutzabdeckung.4 and 5 show an embodiment of a switching device a safety switching device in two different switching states correspondingly opened or closed protective cover.

Fig. 6 und 7 zeigen zwei verschiedene Montagemöglichkeiten einer Sicherheitsschaltvorrichtung.6 and 7 show two different mounting options one Safety switching device.

Fig. 8 und 9 zeigen in Seitenansicht bzw. in Explosionsdarstellung weitere Ausführungsformen von Schaltgeräten für eine Sicherheitsschaltvorrichtung.8 and 9 show a side view and an exploded view further embodiments of switching devices for a safety switching device.

Fig. 10 und 11 zeigen eine weitere Ausführungsform eines Befestigungselements in Draufsicht in zwei unterschiedlichen Stellungen.10 and 11 show a further embodiment of a fastening element in top view in two different positions.

Fig. 12 und 13 zeigen in Seitenansicht bzw. Draufsicht jeweils eine Backe des Befestigungselements der Fig. 10 und 11.12 and 13 each show a side view and a plan view a jaw of the fastener of FIGS. 10 and 11th

Die in Fig. 1 bis 3 dargestellte Sicherheitsschaltvorrichtung umfaßt ein elektrisches Schaltgerät 1 mit einem Gehäuse 2, das an einem feststehenden Teil 3, etwa einem Rahmen einer Schutzabdeckung 4 eines Maschinengehäuses oder einer Einfriedung an gefahrbringenden Räumen oder Maschinenanlagen, benachbart zu der um eine Bewegungsachse zwischen einer geöffneten und einer geschlossenen Position verschwenkbaren Schutzabdeckung 4 etwa in Form einer Schutztür, eines Schutzfensters oder einer Sicherheitsklappe befestigt ist. Die Bewegungsachse ist dabei die Achse einer in dem Gehäuse 2 gelagerten und aus diesem herausragenden Betätigungswelle 5, deren aus dem Gehäuse 2 herausragendes Ende 6 bei diesem Ausführungsbeispiel einen verminderten Durchmesser aufweist. Auf das Ende 6 ist ein Verbindungselement 7 aufgesetzt, das in mindestens zwei Ebenen gelenkig bewegbar und vorzugsweise als Kardangelenk ausgebildet ist und zwei Hülsen 8, 9 aufweist, die über ein Mittelstück 10 und Kreuzgelenke 11 kardangelenkig miteinander verbunden sind.The safety switching device shown in FIGS. 1 to 3 comprises an electrical switching device 1 with a housing 2, which on a fixed part 3, such as a frame of a protective cover 4 a Machine housing or a fence in dangerous rooms or Machine systems, adjacent to that around an axis of movement between one open and a closed position swiveling protective cover 4 in the form of a protective door, a protective window or one Safety flap is attached. The axis of movement is the Axis of a bearing in the housing 2 and protruding from this Actuating shaft 5, whose end 6 protrudes from the housing 2 this embodiment has a reduced diameter. On the end 6 is a connecting element 7 placed in at least two levels articulated and preferably designed as a universal joint and has two sleeves 8, 9, which have a center piece 10 and universal joints 11 are connected to one another by cardan joints.

Die Hülse 8 ist auf das Ende 6 der Betätigungswelle 5 gesteckt und gegebenenfalls zusätzlich etwa durch einen Stift gesichert, während die Hülse 9 auf eine vorzugsweise in Längsrichtung geriffelte Achse 12 gesteckt ist. Hierbei ist eine Stellschraube 13 vorgesehen, um eine Längseinstellung der Hülse 8 zur Achse 12 vornehmen zu können und Hülse 8 und Achse 12 drehfest miteinander zu verbinden.The sleeve 8 is placed on the end 6 of the actuating shaft 5 and optionally additionally secured by a pin while the sleeve 9 onto an axis 12, which is preferably corrugated in the longitudinal direction is stuck. Here, an adjusting screw 13 is provided to a To be able to make longitudinal adjustment of the sleeve 8 to the axis 12 and sleeve 8 and axis 12 to rotate together.

Die Achse 12 befindet sich an einem an der Schutzabdeckung 4 mittels Schrauben 14 angebrachten Befestigungselement 15. Die Achse 12 wird von einer Bohrung 16 im Befestigungselement 15 drehfest aufgenommen, wobei die Bohrung 16 benachbart zu einer Seitenkante des Befestigungselements 15 (im montierten Zustand mehr oder weniger achsparallel zur Betätigungswelle 5) angeordnet ist.The axis 12 is located on the protective cover 4 Fastening element 15 attached by means of screws 14. The axis 12 is rotatably received by a bore 16 in the fastening element 15, the bore 16 adjacent a side edge of the fastener 15 (more or less parallel to the axis in the assembled state to the actuating shaft 5) is arranged.

Das Befestigungselement 15 weist zwei rechtwinkling zur Bohrung 16 verlaufende Löcher 17 auf, die die Schrauben 14 aufnehmen.The fastener 15 has two right angles to the hole 16 holes 17 that receive the screws 14.

Gemäß der in den Fig. 2 und 3 dargestellten Ausführungsform sind die Löcher 17 als Langlöcher ausgebildet und insbesondere gestuft, so daß die Schrauben 14 versenkt aufgenommen werden können.According to the embodiment shown in FIGS. 2 and 3 the holes 17 are designed as elongated holes and in particular are stepped, so that the screws 14 can be sunk.

Ferner weist das Befestigungselement 15 zwei von entsprechenden, zumindest teilweise mit Gewinde versehenen Bohrungen 18 aufgenommene, mit Gewinde versehene Sicherungsstifte 19 auf, wobei jede der parallelen Bohrungen 18 quer zum zugehörigen Loch 17 verläuft und dieses kreuzt, so daß die vom Loch 17 aufgenommene Schraube 14 nicht ohne Lösen des zugehörigen Sicherungsstiftes 19 entfernbar ist.Furthermore, the fastening element 15 has two of corresponding at least partially threaded bores 18, threaded locking pins 19, each of the parallel Bores 18 runs transversely to the associated hole 17 and this crosses so that the screw 14 received by the hole 17 is not without loosening the associated locking pin 19 is removable.

Die Betätigung des Schaltgeräts 1 erfolgt durch Verschwenken der Schutzabdeckung 4 in die geöffnete bzw. geschlossene Stellung über das Verbindungselement 7, wobei infolge der Anordnung und/oder Montage bedingte Abweichungen der Fluchtung der Betätigungswelle 5 und der Achse 12 durch das kardangelenkartige Verbindungselement 7 ausgeglichen werden.The switching device 1 is actuated by pivoting the protective cover 4 in the open or closed position the connecting element 7, due to the arrangement and / or assembly conditional deviations in the alignment of the actuating shaft 5 and the axis 12 can be compensated for by the cardan joint-like connecting element 7.

Bei dem in Fig. 4 und 5 dargestellten Schaltgerät 1 sind zwei zwangstrennende Schalter 20 vorgesehen, die wechselseitig über einen scheibenförmigen Betätigungsnocken 21 betätigbar sind, so daß ein Schalter 20 die geöffnete und der andere die geschlossene Stellung der Schutzabdeckung 4 überwachen kann. Die Schalter 20 weisen Festkontakte 22 auf, die über Kontaktbrücken 23 an einem über den Betätigungsnocken 21 verschiebbaren Betätigungsstößel 24 entsprechend der Stellung der Schutzabdeckung 4 verbindbar sind. Hierzu weist der Betätigungsnocken 21 in axial übereinander angeordneten Ebenen einen Nockenvorsprung 25 und eine Rastkerbe 26 auf, die um 90° zueinander versetzt sind. Bereits bei einem geringen Öffnungswinkel von beispielsweise 3° spricht das Schaltgerät 1 an.In the switching device 1 shown in FIGS. 4 and 5 there are two Forcibly isolating switch 20 is provided, which are mutually via a disc-shaped actuating cams 21 can be actuated, so that a switch 20 the open and the other the closed position of the Protective cover 4 can monitor. The switches 20 have fixed contacts 22 on, via contact bridges 23 on one over the actuating cam 21 sliding actuating plunger 24 according to the position of the Protective cover 4 can be connected. For this purpose, the actuating cam 21 in axially superposed planes a cam projection 25 and a notch 26, which are offset by 90 ° to each other. Already at the switching device speaks a small opening angle of, for example, 3 ° 1 on.

Gemäß Fig. 6 ist das Schaltgerät 1 am oberen Ende eines Pfostens 27 angebracht, wobei das Verbindungselement 7 zusätzlich ein Verlängerungsstück 28 umfaßt.6, the switching device 1 is at the upper end of a post 27 attached, the connecting element 7 additionally an extension piece 28 includes.

Gemäß Fig. 7 ist das Schaltgerät 1 unmittelbar an einem Rahmenelement 29 eines als Umzäunung ausgebildeten Teils 3 angebracht.7, the switching device 1 is directly on a frame element 29 of a part 3 designed as a fence.

Gemäß Fig. 8 trägt die Betätigungswelle 5 trägt einen walzenförmigen Betätigungsnocken 21 mit zwei axial übereinander liegenden Betätigungsabschnitten 27a, 27b.8, the actuating shaft 5 carries a roller-shaped Actuating cams 21 with two axially superimposed actuating sections 27a, 27b.

Der untere Betätigungsabschnitt 27a besitzt eine im zylindrischen Umfang des Betätigungsnockens 21 vorgesehene Rastkerbe 26 zur rastenden Aufnahme des Betätigungsstößels 24 eines der Schalters 20, der beim Öffnen der Schutzabdeckung 4 betätigt wird.The lower operating portion 27a has a cylindrical one Scope of the actuating cam 21 provided notch 26 for locking Recording the actuating plunger 24 of one of the switches 20, the is actuated when the protective cover 4 is opened.

Der obere Betätigungsabschnitt 27b besitzt einen am zylindrischen, in diesem Bereich einen reduzierten Durchmesser aufweisenden Umfang des Betätigungsnockens 21 vorstehenden Nockenvorsprung 25 in Axialrichtung über der Rastkerbe 26, in der sich der Betätigungsstößel 24 des entsprechenden Schalters 20 abstützt, wenn sich die Schutzabdeckung 4 in geschlossener Position befindet. Der Nockenvorsprung 25 erstreckt sich bis zum Umfang des Betätigungsabschnitts 27a auswärts. Der zugehörige Schalter 20 wird ebenfalls, allerdings in umgekehrter Richtung in bezug zum anderen Schalter 20, umgeschaltet, wenn die Schutzabdeckung 7 geöffnet wird. Die beiden Schalter 20 sind hierbei in Axialrichtung der Betätigungswelle 5 übereinander angeordnet.The upper actuating section 27b has a cylindrical, reduced diameter in this area of the actuating cam 21 projecting cam projection 25 in the axial direction about the notch 26, in which the actuating plunger 24 of the corresponding switch 20 supports when the protective cover 4 in closed position. The cam projection 25 extends out to the periphery of the operating portion 27a. The associated one Switch 20 is also related, but in the opposite direction to the other switch 20, switched when the protective cover 7 is opened becomes. The two switches 20 are in the axial direction of the actuating shaft 5 arranged one above the other.

Hierdurch ergibt sich ein sehr flaches Gehäuse 2, dessen Stärke im wesentlichen gleich den Wandstärken von Gehäuserückseite und Dekkel plus Stärke der Schalter 20 ist. Eine derartiges Schaltgerät 1 läßt sich am feststehenden Teil 3 irgendwo zwischen den zur Anlenkung der Schutzabdeckung 4 vorgesehenen Gelenken oder Scharnieren anbringen, ohne die Schwenkbarkeit der letzteren zu beeinträchtigen.This results in a very flat housing 2, the strength of which essentially the same as the wall thickness of the back of the housing and the cover plus switch 20 strength is. Such a switching device 1 can itself on the fixed part 3 somewhere between the for articulation of the Attach protective cover 4 provided joints or hinges without affect the pivotability of the latter.

Wie in Fig. 9 dargestellt ist, kann in dem Gehäuse 2 auch beidseitig jeweils eine Betätigungswelle 5 mit jeweils einem walzenförmigen Betätigungsnocken 21 gelagert sein. Ersichtlich kann außerdem aus Sicherheitsgründen parallel ein zusätzlicher eine Rastkerbe 26 aufweisender Betätigungsnocken 21' mit einem zusätzlichen Schalter (nicht dargstellt) vorgesehen sein. Außerdem kann der Betätigungsnocken 21' zusätzlich oder ausschließlich zum Verbinden der beiden Betätigungswellen 5 dienen.As shown in Fig. 9, the housing 2 can also an actuating shaft 5 with a roller-shaped one on each side Actuation cams 21 can be mounted. Can also be seen For safety reasons, an additional one having a notch 26 in parallel Actuation cam 21 'with an additional switch (not shown) may be provided. In addition, the actuating cam 21 'can additionally or exclusively for connecting the two actuation shafts 5 serve.

Die Betätigungswellen 5 weisen Bohrungen zum Einstecken eines Verbindungsstücks 30 des Verbindungselements 7 bzw. eines Deckels 31 auf.The actuating shafts 5 have holes for inserting one Connecting piece 30 of the connecting element 7 or a cover 31 on.

Durch die beiden, an gegenüberliegenden Seiten aus dem Gehäuse 2 herausragenden Betätigungswellen 5 läßt sich das Schaltgerät 1 wahlweise an der einen oder anderen Seite mit dem Befestigungselement 15 verbinden. Entfällt der mittlere Betätigungsnocken 21', werden zwei getrennte Überwachungen möglich.Through the two, on opposite sides of the housing 2 outstanding actuating shafts 5, the switching device 1 can be selected on one side or the other with the fastening element 15 connect. If the middle actuating cam 21 'is omitted, two separate ones Monitoring possible.

Das in den Fig. 10 bis 13 dargestellte Befestigungselement 15 umfaßt zwei Backen 32, 33, die über ein Scharnier 34 schwenkbeweglich miteinander verbunden sind. Hierbei bildet insbesondere die Achse 12 die Drehachse des Scharniers 34. Die Backe 33 weist eine Ausnehmung 35 zur Aufnahme der anderen, mit den Löchern 17 versehenen Backe 32 auf. Die Löcher 17 werden in der in Fig. 10 dargestellten Position der beiden Backen 32, 33 abgedeckt, so daß die Schrauben 14 nicht zugänglich sind. Die beiden Backen 32, 33 werden durch einen versenkt aufgenommenen Schraubbolzen 36 miteinander verbunden, wobei die in der Backe 33 zur Aufnahme des Schraubbolzens 36 vorgesehene Ausnehmung 37 so gestaltet ist, daß der Schraubbolzen 36 bei leicht verschwenkter Backe 32 in deren Gewindebohrung 38 eingeschraubt werden kann.The fastening element 15 shown in FIGS. 10 to 13 comprises two jaws 32, 33 which can be pivoted via a hinge 34 are interconnected. In particular, the axis 12 forms the Axis of rotation of the hinge 34. The jaw 33 has a recess 35 Inclusion of the other jaw 32 provided with the holes 17. The Holes 17 are in the position shown in FIG. 10 of the two Jaws 32, 33 covered so that the screws 14 are not accessible. The two jaws 32, 33 are received by a recessed Bolts 36 connected to each other, which in the jaw 33 for Receiving the bolt 36 provided recess 37 designed so is that the screw bolt 36 in a slightly pivoted jaw 32 Threaded hole 38 can be screwed.

Parallel zum Schraubbolzen 36 nimmt die Backe 33 eine Stellschraube 39 auf, die sich mit einem Ende an der Backe 32 abstützen kann, so daß die beiden Backen 32, 33 über den Schraubbolzen 36 miteinander verspannbar sind.Parallel to the screw bolt 36, the jaw 33 takes an adjusting screw 39, which can be supported at one end on the jaw 32, so that the two jaws 32, 33 together via the screw bolt 36 are braced.

Eine Sicherheitsschaltvorrichtung der beschriebenen Art läßt sich einfach montieren und justieren sowie nachträglich ohne weiteres und ohne Benötigung von zusätzlichen Teilen an der Schutzabdeckung 4 oder an dem feststehenden Teil 3 anbringen.A safety switching device of the type described easy to assemble and adjust and easily afterwards and without the need for additional parts on the protective cover 4 or attach to the fixed part 3.

Claims (15)

  1. Safety switching device for monitoring a protective cover (4) able to tilt about an axis of movement between an open and a closed position, with electric switchgear (1) able to be actuated by the movement of the protective cover, which switchgear is located with its actuating device (5, 21) axially aligned with the axis of movement of the protective cover (4), the protective cover (4) being connected by way of a connecting member (7) to the switchgear (1), characterised in that the connecting member (7) is arranged to move flexibly in at least two planes, is connected to the protective cover (4) by way of a fastening member (15) and the switchgear (1) is stationary and the fastening member (15) is fastened to the protective cover (4) essentially independently of the axis of movement.
  2. Device according to Claim 1, characterised in that the actuating device (5, 21) comprises an actuating shaft (5) detachably connected to the connecting member (7).
  3. Device according to Claim 2, characterised in that the actuating device (5, 21) comprises a further actuating shaft (5) able to be connected detachably to the connecting member (7).
  4. Device according to one of Claims 1 to 3, characterised in that the actuating device (5, 21) comprises at least one actuating cam (21) for an associated switch (20).
  5. Device according to Claim 4, characterised in that at least two actuating cams (21) are arranged axially one above the other and are associated with correspondingly located switches (20).
  6. Device according to Claim 4 or 5, characterised in that the actuating device (5, 21) comprises two actuating cams (21) on the one hand for a switch (20) responding to the closed position of the protective cover (4) and on the other hand a switch (20) responding to the open position of the protective cover (4).
  7. Device according to one of Claims 4 to 6, characterised in that the actuating cams (21) are constructed in the form of cylinders or discs.
  8. Device according to one of Claims 4 to 7, characterised in that the actuating cams (21) for one switch (20) comprise a locating notch (26) and for the other a cam projection (25).
  9. Device according to one of Claims 1 to 8, characterised in that the connecting member (7) is a shaft joint, in particular a double shaft or Cardan joint.
  10. Device according to one of Claims 1 to 9, characterised in that the fastening member (15) comprises a spindle (12), which is connected to the connecting member (7) in a longitudinally adjustable manner.
  11. Device according to one of Claims 1 to 10, characterised in that the fastening member (15) comprises bores (18) for receiving retaining members (19) for screws (14) serving for attaching the fastening member (15).
  12. Device according to one of Claims 1 to 10, characterised in that the fastening member (15) comprises two folding jaws (32, 33), connected to each other in the manner of a hinge.
  13. Device according to Claim 12, characterised in that the hinge connection of the two jaws (32, 33) comprises a joint pin (12), which is connected to the connecting member (7).
  14. Device according to Claim 12 or 13, characterised in that the jaws (32, 33) can be screwed to each other so that screws (14) for locating the fastening member (15) on the protective cover (4) are covered.
  15. Device according to one of Claims 12 to 14, characterised in that the fastening member (15) comprises a holding device (39), in particular in the form of a set screw received by one jaw (33) and supported on the other jaw (32), for the two jaws (32, 33).
EP96118491A 1995-11-24 1996-11-19 Safety switch device Expired - Lifetime EP0776020B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19543769 1995-11-24
DE1995143769 DE19543769A1 (en) 1995-11-24 1995-11-24 Safety switch for monitoring of movement of protective cover
DE19632963 1996-08-16
DE1996132963 DE19632963C1 (en) 1996-08-16 1996-08-16 Safety switch for monitoring of movement of protective cover

Publications (2)

Publication Number Publication Date
EP0776020A1 EP0776020A1 (en) 1997-05-28
EP0776020B1 true EP0776020B1 (en) 1999-09-01

Family

ID=26020628

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96118491A Expired - Lifetime EP0776020B1 (en) 1995-11-24 1996-11-19 Safety switch device

Country Status (7)

Country Link
US (1) US5896783A (en)
EP (1) EP0776020B1 (en)
JP (1) JPH09171745A (en)
CN (1) CN1159651A (en)
BR (1) BR9605671A (en)
CA (1) CA2189815A1 (en)
DE (1) DE59602943D1 (en)

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US6501040B2 (en) 2001-05-18 2002-12-31 Honeywell International Inc. Dual directional cable actuated emergency stop device
DE20302633U1 (en) * 2003-02-18 2004-07-15 Marantec Antriebs- Und Steuerungstechnik Gmbh & Co. Kg Controlled drive for a door leaf or the like.
CN104626638B (en) * 2015-01-05 2016-09-07 李明科 A kind of numerical control press attachment means
CN109346365B (en) * 2018-09-05 2023-09-22 国网山东省电力公司寿光市供电公司 Outdoor knife switch auxiliary switch protective cover

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CA596433A (en) * 1960-04-19 T. Kintzing Reese Replaceable cam for limit switch
US1564207A (en) * 1923-05-10 1925-12-08 Cloud John Wills Controlling device for electric circuits
SE224985C1 (en) 1965-01-14 1969-02-18 Evers & Co Ab BY RELEASE AT A PARTICULAR TEMPERATURE OF A TEMPERATURE-CANCELING SECURITY BODY OPENABLE LOCKING DEVICE FOR AROUND A HORIZONTAL AXLE SWANGWARE SMOKE DOORS
US3316367A (en) * 1965-08-26 1967-04-25 Mc Graw Edison Co Reversible sectionalizing switch
US3440373A (en) * 1967-04-26 1969-04-22 Gen Electric Combined hinge and switch mechanism with pin and slot connection
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US4789761A (en) * 1987-06-22 1988-12-06 Scott Fetzer Company Appliance timer
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Also Published As

Publication number Publication date
EP0776020A1 (en) 1997-05-28
CA2189815A1 (en) 1997-05-25
CN1159651A (en) 1997-09-17
DE59602943D1 (en) 1999-10-07
JPH09171745A (en) 1997-06-30
BR9605671A (en) 1998-08-18
US5896783A (en) 1999-04-27

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