EP0172214A1 - Verrouillage de securite - Google Patents

Verrouillage de securite

Info

Publication number
EP0172214A1
EP0172214A1 EP19850901039 EP85901039A EP0172214A1 EP 0172214 A1 EP0172214 A1 EP 0172214A1 EP 19850901039 EP19850901039 EP 19850901039 EP 85901039 A EP85901039 A EP 85901039A EP 0172214 A1 EP0172214 A1 EP 0172214A1
Authority
EP
European Patent Office
Prior art keywords
movable
rotary
fastening
door
operating
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.)
Withdrawn
Application number
EP19850901039
Other languages
German (de)
English (en)
Inventor
Donald Bebbington Smith
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0172214A1 publication Critical patent/EP0172214A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B17/00—Accessories in connection with locks
    • E05B17/22—Means for operating or controlling lock or fastening device accessories, i.e. other than the fastening members, e.g. switches, indicators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16P—SAFETY DEVICES IN GENERAL; SAFETY DEVICES FOR PRESSES
    • F16P3/00—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body
    • F16P3/08—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body in connection with the locking of doors, covers, guards, or like members giving access to moving machine parts
    • 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

Definitions

  • This invention relates to interlocking devices for doors giving access to pressure vessels, electrical switch enclosures, machines, and other hazardous areas.
  • a rotary motion usually associated with a cam, (for most switches, and. for many position-sensing valves), but sometimes associated directly with the rotary operation of a valve.
  • the rotary motion may be derived from a machine guard hinge on which a cam is mounted, but this type of system has limited sensitivity and cannot be applied to removable guards.
  • Methods are known for interlocking using rotary mechanisms driven by an exchange key (which is moved from switch to guard bolt) ; by a captive key, captive in the guard, which engages axially with the rotary switch or valve mechanism; or by a tongue device which engages with the rotary mechanism tangentially. This invention, relates to a development of the last mentioned device.
  • Figure 1 shows an arrangement of the switch contacts, the rotary cam which operates them, and the arrangement of the tongue device which operates the rotary cam.
  • FIGS 2 and 4 show arrangements of switch and lever operated bolt in which the bolt acts as the operating tongue device.
  • Figure 3 shows an adaptor for the arrangement in figure 2, enabling it to be applied to sliding doors.
  • One embodiment of the invention (figures 1, 2) comprises switch contacts 1 which are pressed towards the closed position by a spring 2.
  • the contacts may be directly driven as shown, or of a type where snap action is followed by a direct break, or of snap acting type alone.
  • the switch may be substituted any valve, pneumatic or hydraulic, which is operated by axial movement of a plunger, or by other linear movement.
  • the switch or valve is operated by a cam 3.
  • the device may instead of linearly driving switch contacts or valve ports by means of cam 3, equally well drive a rotary control element directly.
  • the cam is driven round directly, or indirectly via any known lost motion and overcentring mechanism, by the tangential engagement of a tongue 4.
  • a lip 14 on the tongue engages with a mating surface 15 of, the rotary device or cam to provide a positive drive in the "off” direction.
  • Corresponding pairs of surfaces 16, 17 drive in the "on" direction.
  • the tongue is fixed to the door to engage the switch and associated parts as the door is closed.
  • it is arranged as shown to act as a fastening device for the door 5, operable to affect the switch only when the door is closed. Operation is by sliding, or as shown, by manual operation of a rotary handle 6 through a rack 7 and pinion 8, or other known mechanisms for door handles. It may be arranged with a spring 9 to have a slam action, and a ramp 10 permitting the door to be slammed without the bolt being retracted by the handle.
  • the handle may incorporate lost motion as in a conventional household door handle.
  • device may be made more secure by using a known arrangement of a magnet 11 in the door operating a spring 12 returned contact shielding device 13.
  • Increased security may be generated by using two tongues and two switch assemblies.
  • the tongue device may itself be designed to have a surface suitable for latching, or may be associated with a separate bolt driven simultaneously with it, or interlocked mechanically with it and operating separately.
  • Time delays or hazard sensors may be used therefore to operate a solenoid bolt, a thermally operated bolt, or pneumatic or hydraulic or other bolts (depending on the types of control media available) to either (a) retain the door or (b) retain the latch mechanism or bolt.
  • a solenoid bolt a thermally operated bolt
  • pneumatic or hydraulic or other bolts depending on the types of control media available
  • Locking means 21 may be provided to prevent operation of the handle.
  • a solenoid bolt 34 is arranged to detain the latch bolt, in the embodiment of figure 2, being a miniature solenoid inserting a bar 35 in the path of the latch bolt.
  • a ramp device 20 is used in lieu of the ramp 10 on the embodiment of figure 2.
  • the device of figure 2 may be mounted either inside or outside the enclosure, and the latch operating mechanism likewise, if appropriate to the purpose of the enclosure.
  • the invention may be applied to any domestic appliance or item of industrial plant or machinery where an interlock and a door latching system are desired or required, and can be combined in a single unit.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Mechanical Engineering (AREA)
  • Power-Operated Mechanisms For Wings (AREA)

Abstract

Dispositif de fermeture pour portes, panneaux et autres parties articulées, coulissantes ou détachables. Le dispositif comprend un élément de fermeture mobile (4) s'engageant avec un élément rotatif (3) qui actionne un élément de commande (1). Une surface (14) sur l'élément mobile et une surface correspondante (15) sur l'élément rotatif sont agencées de sorte que lors du dégagement de l'élément mobile, l'élément rotatif est forcé de tourner, actionnant ainsi l'élément de commande.
EP19850901039 1984-02-29 1985-02-28 Verrouillage de securite Withdrawn EP0172214A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB848405342A GB8405342D0 (en) 1984-02-29 1984-02-29 Interlocking and latching tongues
GB8405342 1984-02-29

Publications (1)

Publication Number Publication Date
EP0172214A1 true EP0172214A1 (fr) 1986-02-26

Family

ID=10557392

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19850901039 Withdrawn EP0172214A1 (fr) 1984-02-29 1985-02-28 Verrouillage de securite

Country Status (3)

Country Link
EP (1) EP0172214A1 (fr)
GB (1) GB8405342D0 (fr)
WO (1) WO1985003970A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8901127D0 (en) * 1989-01-19 1989-03-15 Eja Eng Co Safety switch assemblies
DE19632962A1 (de) * 1996-08-16 1998-02-19 Schmersal K A Gmbh & Co Schalter- und Türbetätigungseinrichtung
US6283514B1 (en) 1996-08-16 2001-09-04 K. A. Schmersal Gmbh & Co. Apparatus for monitoring and controlling access to a restricted area
DE19934370C2 (de) * 1999-07-22 2001-05-17 Schmersal K A Gmbh & Co Überwachungseinrichtung
US6539760B1 (en) 1999-05-24 2003-04-01 K.A. Schmersal Gmbh & Co. Monitoring device
DE10305704B3 (de) 2003-02-12 2004-06-24 K.A. Schmersal Gmbh & Co Sicherheitszuhaltung
DE102005057108A1 (de) * 2005-11-28 2007-05-31 Pilz Gmbh & Co. Kg Sicherheitsschalter zum Erzeugen eines Freigabesignals in Abhängigkeit von der Position einer beweglichen Schutztür

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2425898A1 (de) * 1974-05-30 1975-12-18 Bosch Gmbh Robert Vorrichtung zum oeffnen von elektrischen kontakten beim entfernen von schutzeinrichtungen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8503970A1 *

Also Published As

Publication number Publication date
WO1985003970A1 (fr) 1985-09-12
GB8405342D0 (en) 1984-04-04

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB LI LU NL SE

17P Request for examination filed

Effective date: 19860313

RBV Designated contracting states (corrected)

Designated state(s): DE GB

17Q First examination report despatched

Effective date: 19861024

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19880830