EP0987726A3 - Key-controlled safety switch - Google Patents

Key-controlled safety switch Download PDF

Info

Publication number
EP0987726A3
EP0987726A3 EP99118263A EP99118263A EP0987726A3 EP 0987726 A3 EP0987726 A3 EP 0987726A3 EP 99118263 A EP99118263 A EP 99118263A EP 99118263 A EP99118263 A EP 99118263A EP 0987726 A3 EP0987726 A3 EP 0987726A3
Authority
EP
European Patent Office
Prior art keywords
key
safety switch
installation
machine
anchorable
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
EP99118263A
Other languages
German (de)
French (fr)
Other versions
EP0987726A2 (en
EP0987726B1 (en
Inventor
Bernardo Pizzato
Giuseppe Pizzato
Marco Pizzato
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.)
Pizzato Elettrica SRL
Original Assignee
Pizzato Elettrica SRL
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 Pizzato Elettrica SRL filed Critical Pizzato Elettrica SRL
Publication of EP0987726A2 publication Critical patent/EP0987726A2/en
Publication of EP0987726A3 publication Critical patent/EP0987726A3/en
Application granted granted Critical
Publication of EP0987726B1 publication Critical patent/EP0987726B1/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
    • H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
    • H01H36/0006—Permanent magnet actuating reed switches
    • H01H36/0046—Limit switches, also fail-safe operation or anti-tamper considerations
    • 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
    • H01H27/007—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 switch being lockable by remote control, e.g. by electromagnet
    • 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

Abstract

A key-controlled safety switch assembly includes a box-like case (2) anchorable to a fixed part of a protection or barrier of a machine or installation and provided with one or more slots (5), an actuating key (3) anchorable to a moving part of the protection and insertable in any of the slots (5). The case (2) contains internally thereof a safety electric circuit (6) for selectively closing/opening a general relais or a safety switch of the machine or installation on insertion/extraction of actuating key (3), locking parts (9) for selectively locking the actuating key (3) in the inserted position in a slot (5) until the dangerous parts of the machine or installation are moving, a detecting device (13) for detecting the position of the key (3) to allow closing of the safety switch (6). The detecting device (13) is exclusively of the electronic type acting from distance, and the key (3) is shaped so as to enter freely in the slot (5) with a minimal predetermined clearance (s).
EP19990118263 1998-09-15 1999-09-15 Key-controlled safety switch Expired - Lifetime EP0987726B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITVI980169 ITVI980169A1 (en) 1998-09-15 1998-09-15 KEY SAFETY SWITCH ASSEMBLY.
ITVI980169 1998-09-15

Publications (3)

Publication Number Publication Date
EP0987726A2 EP0987726A2 (en) 2000-03-22
EP0987726A3 true EP0987726A3 (en) 2001-03-07
EP0987726B1 EP0987726B1 (en) 2005-08-03

Family

ID=11426796

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19990118263 Expired - Lifetime EP0987726B1 (en) 1998-09-15 1999-09-15 Key-controlled safety switch

Country Status (3)

Country Link
EP (1) EP0987726B1 (en)
DE (1) DE69926455T2 (en)
IT (1) ITVI980169A1 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10230564A1 (en) * 2002-07-05 2004-01-29 Gerhard Thiel Coded locking device for machine safety cover has projecting arms provided with passive components fitting into corresponding seatings provided with matching active components
NL1025100C1 (en) * 2003-12-22 2005-06-23 Johannes Leonardus Henr Ceelen Electronic security device.
DE102004049024B3 (en) * 2004-09-20 2006-04-13 K.A. Schmersal Holding Kg Position monitoring device
EP2390888B1 (en) * 2010-05-26 2012-07-11 Rockwell Automation Limited Safety switch
DE102011121235A1 (en) * 2011-12-12 2013-06-13 Euchner Gmbh + Co. Kg Module for a safety switch, safety switch with such a module and actuator for such a safety switch
ITVI20130290A1 (en) * 2013-12-06 2015-06-07 Pizzato Elettrica Srl SECURITY SWITCH WITH ELECTRONIC DRIVE
ITVI20130291A1 (en) * 2013-12-06 2015-06-07 Pizzato Elettrica Srl TIMED SAFETY SWITCH WITH MANUAL OPERATION
JP7122851B2 (en) 2018-04-13 2022-08-22 株式会社キーエンス safety switch
ES2880753T3 (en) * 2018-11-13 2021-11-25 Euchner Gmbh Co Kg Closing device
US11473336B2 (en) * 2019-05-31 2022-10-18 Rockwell Automation Technologies, Inc. Sensor with three concurrent directions of approach
US11572709B2 (en) 2019-05-31 2023-02-07 Rockwell Automation Technologies, Inc. Guard locking switch with three concurrent directions of approach
US10997486B1 (en) 2020-02-06 2021-05-04 Rockwell Automation Technologies, Inc. RFID tag retention method within a metal plate

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3309372A1 (en) * 1983-03-16 1984-09-27 Hans & Jos. Kronenberg Gmbh, 5060 Bergisch Gladbach Safety switch
DE3424418C1 (en) * 1984-07-03 1985-09-12 Hans & Jos. Kronenberg Gmbh, 5060 Bergisch Gladbach Safety switch
US5233323A (en) * 1992-05-13 1993-08-03 Sentrol, Inc. Defeat resistant interlock/monitoring system
US5239202A (en) * 1990-11-30 1993-08-24 Sentrol, Inc. Failsafe interlock switch
FR2721423A1 (en) * 1994-06-17 1995-12-22 Pedroli Jean Noel Contact with combined opto-electronic and magnetic reliable effect
US5541562A (en) * 1994-10-16 1996-07-30 Honeywell Inc. Apparatus for sensing the closure of a door
EP0814490A2 (en) * 1996-06-18 1997-12-29 Moeller GmbH Safety device for position switch
EP0837485A2 (en) * 1996-10-17 1998-04-22 Moeller GmbH Safety device for position switch

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3309372A1 (en) * 1983-03-16 1984-09-27 Hans & Jos. Kronenberg Gmbh, 5060 Bergisch Gladbach Safety switch
DE3424418C1 (en) * 1984-07-03 1985-09-12 Hans & Jos. Kronenberg Gmbh, 5060 Bergisch Gladbach Safety switch
US5239202A (en) * 1990-11-30 1993-08-24 Sentrol, Inc. Failsafe interlock switch
US5233323A (en) * 1992-05-13 1993-08-03 Sentrol, Inc. Defeat resistant interlock/monitoring system
FR2721423A1 (en) * 1994-06-17 1995-12-22 Pedroli Jean Noel Contact with combined opto-electronic and magnetic reliable effect
US5541562A (en) * 1994-10-16 1996-07-30 Honeywell Inc. Apparatus for sensing the closure of a door
EP0814490A2 (en) * 1996-06-18 1997-12-29 Moeller GmbH Safety device for position switch
EP0837485A2 (en) * 1996-10-17 1998-04-22 Moeller GmbH Safety device for position switch

Also Published As

Publication number Publication date
EP0987726A2 (en) 2000-03-22
EP0987726B1 (en) 2005-08-03
DE69926455D1 (en) 2005-09-08
DE69926455T2 (en) 2006-03-30
ITVI980169A1 (en) 2000-03-15

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