EP0129253A2 - Interrupteur de sécurité avec moyen de verrouillage contre la fermeture non-autorisée - Google Patents

Interrupteur de sécurité avec moyen de verrouillage contre la fermeture non-autorisée Download PDF

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Publication number
EP0129253A2
EP0129253A2 EP84107064A EP84107064A EP0129253A2 EP 0129253 A2 EP0129253 A2 EP 0129253A2 EP 84107064 A EP84107064 A EP 84107064A EP 84107064 A EP84107064 A EP 84107064A EP 0129253 A2 EP0129253 A2 EP 0129253A2
Authority
EP
European Patent Office
Prior art keywords
locking
control
control roller
housing
recess
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Withdrawn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
EP84107064A
Other languages
German (de)
English (en)
Other versions
EP0129253A3 (fr
Inventor
Alfred Köller
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.)
Hans and Jos Kronenberg GmbH
Original Assignee
Hans and Jos Kronenberg GmbH
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 Hans and Jos Kronenberg GmbH filed Critical Hans and Jos Kronenberg GmbH
Publication of EP0129253A2 publication Critical patent/EP0129253A2/fr
Publication of EP0129253A3 publication Critical patent/EP0129253A3/fr
Withdrawn legal-status Critical Current

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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

Definitions

  • the invention relates to a safety switch with fail-safe protection according to European patent application 84 100 259.5.
  • This development of the invention is also based on the object of improving the safety switch with incorrect locking device in such a way that actuation by unauthorized persons with such aids which can be produced in a short time is excluded. This level of security is to be increased even further through further training.
  • each locking disk or the locking disks are arranged displaceably on the shaft carrying the control roller and are pressed against the control roller by spring means.
  • Each locking disk is provided on its end face facing the control roller with a locking groove, into which a correspondingly shaped locking projection, which protrudes from the front side of the control roller, can engage.
  • an axial locking projection is provided on the opposite end face of each locking disk , which is opposed by a correspondingly shaped recess in the adjacent part of the control housing.
  • the control roller In the rest position of the safety switch, i.e. before the operating bracket is pushed in, the control roller is in its initial position and the or each locking disk is pressed against the control roller by the spring means, said locking projection of the control roller engaging in the locking groove of the respective locking disk. On the other hand, on the opposite side of the locking disk, the locking projection is disengaged from the recess and thus no rotational connection between the control housing and the locking disk is established.
  • the or each locking disk is rotated relative to the control roller, but this is only possible in that the locking projection disengages from the locking groove.
  • Such disengagement then simultaneously results in an axial displacement of the or each locking disk away from the control roller, against the force of the spring means.
  • the locking disc can be axially displaced in the sense described. The locking projection then engages in the recess in the control housing and blocks the locking disk against further pivoting.
  • control roller 8 is pivotally mounted in the control housing 4 on a continuous shaft 6.
  • control wing 5 can be seen in the lower part of the control roller, which is acted upon by the crossbar of the (not shown) actuating bracket when it is introduced.
  • the two locking disks 21a and 21b are made thicker in the part adjacent to the shaft 6; while the upper part of the locking washers provided with a slot .25a, 25b has remained unchanged.
  • the axis 19, which supports the switching plunger, moves in this slot.
  • the axis 19 In the right part B of FIG. 1, which represents a locked position (incorrectly closed position), the axis 19 is in its upper limit position 19 ttt within the guide slot.
  • each locking disk has a square locking projection 31a, 31b on its outer side facing the control housing, which has a corresponding square recess 32a, 32b in the control housing. 5 the projection 31a of the left locking disk 21a is located outside the recess 32a of the control housing 4, so that in this position A of the safety switch, the locking disk 21a is not locked in relation to the control housing.
  • the locking projection 31b is immersed in the recess 32b in the control housing 4 and thus prevents the locking disk 21b from rotating relative to the control housing 4.
  • each recess 32a, 32b is provided with a bevel 33a, 33b in order to facilitate the insertion of the locking projection into the recess or to allow larger tolerances.
  • the shaft 6 is surrounded in the region of each of the said recesses 32a, 32b and even beyond by a helical compression spring 30a, 30b, which is received by a corresponding cup-like recess in the control housing.
  • These two helical compression springs 30a, 30b each exert an axial force the locking disk in question, which tries to move it axially in the direction of the control roller 8.
  • each locking disk 21a, 21b On the opposite end face of each locking disk 21a, 21b there is a latching groove 35a, 35b, in which a correspondingly shaped latching projection 34a, 34b, which protrudes axially from the opposite side of the control roller 8, can engage.
  • this locking projection consists of two diametrically opposed roof-like parts which, as shown in FIG. 4, can engage in a correspondingly designed locking groove.
  • the roof-shaped design was chosen so that the non-rotatable connection between the lock washer and the control roller can also be loosened by turning the two parts against each other, in which case one flank of the projection slides on the opposite oblique surface of the locking groove and the lock washer is inevitably displaced axially outwards , because an axial displacement of the control roller is not possible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Breakers (AREA)
EP84107064A 1983-06-21 1984-06-20 Interrupteur de sécurité avec moyen de verrouillage contre la fermeture non-autorisée Withdrawn EP0129253A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833322292 DE3322292C2 (de) 1983-06-21 1983-06-21 Sicherheitsschalter mit Fehlschließsicherung
DE3322292 1983-06-21

Publications (2)

Publication Number Publication Date
EP0129253A2 true EP0129253A2 (fr) 1984-12-27
EP0129253A3 EP0129253A3 (fr) 1987-08-05

Family

ID=6201976

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84107064A Withdrawn EP0129253A3 (fr) 1983-06-21 1984-06-20 Interrupteur de sécurité avec moyen de verrouillage contre la fermeture non-autorisée

Country Status (2)

Country Link
EP (1) EP0129253A3 (fr)
DE (1) DE3322292C2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0345656A3 (fr) * 1988-06-10 1991-04-03 Hans & Jos. Kronenberg GmbH Interrupteur de sécurité
WO1991010247A1 (fr) * 1989-12-30 1991-07-11 Klöckner-Moeller Gmbh Disjoncteur pour capots protecteurs ou analogues
WO1995024726A1 (fr) * 1994-03-10 1995-09-14 Euchner & Co. Interrupteur de securite

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4963706A (en) * 1989-01-12 1990-10-16 Eja Engineering Company Limited Safety switch assemblies

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH514227A (de) * 1971-03-10 1971-10-15 Sprecher & Schuh Ag Elektrisches Schaltgerät mit einer Verklinkungsvorrichtung für das bewegliche Schaltstück
DE3100862C2 (de) * 1981-01-14 1984-02-09 K.A. Schmersal Gmbh & Co, 5600 Wuppertal Sicherheitsschalter
DE3209414A1 (de) * 1981-01-14 1983-09-22 K.A. Schmersal Gmbh & Co, 5600 Wuppertal Sicherheitsschalter fuer schutzabdeckungen u.dgl.
DE3302631C2 (de) * 1983-01-27 1985-02-07 Hans & Jos. Kronenberg Gmbh, 5060 Bergisch Gladbach Sicherheitsschalter mit Fehlschließsicherung

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0345656A3 (fr) * 1988-06-10 1991-04-03 Hans & Jos. Kronenberg GmbH Interrupteur de sécurité
WO1991010247A1 (fr) * 1989-12-30 1991-07-11 Klöckner-Moeller Gmbh Disjoncteur pour capots protecteurs ou analogues
WO1995024726A1 (fr) * 1994-03-10 1995-09-14 Euchner & Co. Interrupteur de securite
US5703339A (en) * 1994-03-10 1997-12-30 Euchner & Co. Safety switch

Also Published As

Publication number Publication date
EP0129253A3 (fr) 1987-08-05
DE3322292A1 (de) 1985-01-10
DE3322292C2 (de) 1986-03-27

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Inventor name: KOELLER, ALFRED