EP0561314B1 - Interrupteur de sécurité - Google Patents

Interrupteur de sécurité Download PDF

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Publication number
EP0561314B1
EP0561314B1 EP19930104127 EP93104127A EP0561314B1 EP 0561314 B1 EP0561314 B1 EP 0561314B1 EP 19930104127 EP19930104127 EP 19930104127 EP 93104127 A EP93104127 A EP 93104127A EP 0561314 B1 EP0561314 B1 EP 0561314B1
Authority
EP
European Patent Office
Prior art keywords
housing
holder
safety switch
switch according
sealing lips
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
EP19930104127
Other languages
German (de)
English (en)
Other versions
EP0561314A1 (fr
Inventor
Siegfried Schulz
Klaus Schulze
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
Application filed by KA Schmersal GmbH and Co KG filed Critical KA Schmersal GmbH and Co KG
Publication of EP0561314A1 publication Critical patent/EP0561314A1/fr
Application granted granted Critical
Publication of EP0561314B1 publication Critical patent/EP0561314B1/fr
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
    • 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
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H9/04—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings

Definitions

  • the invention relates to a safety switch according to the preamble of claim 1.
  • Such a safety switch or the like, in particular for protective covers. is used for personal protection is known for example from DE-PS 31 00 862.
  • This has a housing in which the closing and opening of the contact by the like on the protective cover. attached actuator is effected.
  • the latter actuates a switching drum, which is rotated from its rest position by the actuating member and thereby causes the contact to close and open.
  • the shift drum can be rotated in both directions.
  • insertion slots for the actuating member are provided on at least two sides of the housing, one of which is used depending on the structural conditions.
  • a light ignition switch for motor vehicles is known, with a lock cylinder and a cap pushed onto the lock cylinder for protection against rainwater and dust.
  • the cap has a recess which is closed by two lips.
  • the object of the invention is to provide a safety switch according to the preamble of claim 1, the insertion slot is protected against the ingress of particles, such as dusty or chip-like material, but the actuation is practically not affected by the actuator.
  • Fig. 1 shows a section of a safety switch in section.
  • FIG. 2 shows a rear view (cut in half) of a protective cover of the safety switch from FIG. 1.
  • FIG. 3 shows a section along the line IIII-III of FIG. 2.
  • the safety switch shown comprises a schematically indicated housing 1 and an actuator 2, which has a holder 3, with which it or the like on a protective cover. can be fastened by means of screws, so that when opening or closing or when removing or attaching the protective cover or the like.
  • the actuator 2 actuates the contacts of the safety switch located in the housing 1, i.e. opens or closes depending on the type of switch.
  • the actuator 2 is a flat "key" and in the illustrated embodiment comprises two substantially rectangular, frame-shaped sections 5 separated by a central slot 4, which are connected to a common base and carry two unlocking extensions 6 adjacent to the slot 4 to one in Unlock and actuate housing 1 located shift drum.
  • the housing 1 has at least one insertion slot 7 for the actuating member 2.
  • the insertion slot 7 required for inserting the actuating member 2 is covered by a slot cover 8 which comprises a holder 9 fastened to the housing 1 and having a passage opening 10 for the actuating member 2.
  • the passage opening 10 in the holder 9 is practically as long as the insertion slot 7, but wider than this.
  • the passage opening 10 is made of two elastic, from the holder 9th sealed sealing lips 11 closed.
  • the holder 9 has two dowel-like extensions 12 adjacent to its two opposite narrow sides, which are inserted into corresponding openings 13 in the housing 1, are provided with a receiving bore 14 tapering towards the free end for a screw (not shown) and are cross-slotted in their end regions . By screwing in screws, the extensions 12 are spread at the ends and thus the holder 9 is attached to the housing 1.
  • the invention provides for the sealing lips 11 to be formed on two separate shaped bodies 15, since this increases the sealing effect.
  • the extensions 12 also serve as holding pins for two molded bodies 15 made of sealing material, in particular silicone rubber, on each of which a sealing lip 11 is formed.
  • the two identically shaped bodies 15 are received by the holder 9 and each have an overlap area 17 with a through opening 16 for the respective extension 12 at both ends.
  • the shaped bodies 15 are approximately half the thickness, i.e. reduced to about half the depth of the distance between the inside of the front wall of the holder 9 and the outside of the housing 1 on which the holder 9 is arranged, the overlap region 17 on one side being offset by half the thickness from that on the other side .
  • the two identical moldings 15 can be pressed against one another with the two sealing lips 11, i.e. rotated by 180 ° against each other, are arranged in the holder 9 on the extensions 12 held by friction, wherein they are supported on the housing 1 and thus also serve as a seal for the gap between the holder 9 and the housing 1.
  • the sealing lips 11 are expediently reinforced in a bead-like manner on the lip edge in order to better withstand the stresses caused by the actuating member 2, but to have sufficient flexibility when inserting and removing the actuating member 2.
  • the sealing lips 11 can be easily replaced if this should be necessary due to wear occurring during operation, in that, in the exemplary embodiment shown, the holder 9 is detached from the housing 1 and the moldings 15 are replaced by new ones, after which the holder 9 is reattached to the housing 1 becomes.

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Claims (8)

  1. Interrupteur de sécurité comportant un boîtier (1) présentant au moins une fente d'insertion (7) pour un organe d'actionnement (2), caractérisé en ce qu'il est prévu un couvercle de fente (8) qui comporte un support (9) fixé au boîtier (1), le support (9) présentant une ouverture de passage (10) pour l'organe d'actionnement (2) qui est obturée par deux lèvres d'étanchéité élastiques (11) reçues par le support (9), chaque lèvre d'étanchéité (11) étant formée par un élément (15) en matériau d'étanchéité retenu dans le support (9), les éléments (15) étant identiques.
  2. Interrupteur de sécurité suivant la revendication 1, caractérisé en ce que le support (9) est fixé de manière amovible sur le boîtier (1).
  3. Interrupteur de sécurité suivant la revendication 1 ou 2, caractérisé en ce que le support (9) présente des prolongements (12) en forme de cheville insérés dans des ouvertures correspondantes (13) du boîtier (1), dont les extrémités sont écartées par des vis.
  4. Interrupteur de sécurité suivant l'une quelconque des revendications 1 à 3, caractérisé en ce que les éléments (15) présentent à chaque extrémité une ouverture de passage (16) pour l'enfilement sur une saillie de retenue correspondante (12) et ont une épaisseur réduite d'environ de moitié dans la zone de chevauchement (17) des saillies de retenue (12), la zone de chevauchement (17) d'un côté étant inversée d'environ une demi-épaisseur par rapport à la zone de chevauchement de l'autre côté.
  5. Interrupteur de sécurité suivant la revendication 4, caractérisé en ce que les saillies de retenue (12) sont constituées par les prolongements de fixation du support (9) sur le boîtier (1).
  6. Interrupteur de sécurité suivant l'une quelconque des revendications 1 à 5, caractérisé en ce que les éléments (15) s'appuient de manière étanche sur la face extérieure du boîtier (1).
  7. Interrupteur de sécurité suivant l'une quelconque des revendications 1 à 6, caractérisé en ce que les lèvres d'étanchéité (11) sont renforcées sur leur pourtour.
  8. Interrupteur de sécurité suivant l'une quelconque des revendications 1 à 7, caractérisé en ce que les lèvres d'étanchéité (11) sont réalisées à partir de caoutchouc silicone.
EP19930104127 1992-03-20 1993-03-13 Interrupteur de sécurité Expired - Lifetime EP0561314B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4209086 1992-03-20
DE19924209086 DE4209086C1 (fr) 1992-03-20 1992-03-20

Publications (2)

Publication Number Publication Date
EP0561314A1 EP0561314A1 (fr) 1993-09-22
EP0561314B1 true EP0561314B1 (fr) 1995-10-18

Family

ID=6454619

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19930104127 Expired - Lifetime EP0561314B1 (fr) 1992-03-20 1993-03-13 Interrupteur de sécurité

Country Status (2)

Country Link
EP (1) EP0561314B1 (fr)
DE (1) DE4209086C1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29504673U1 (de) * 1995-03-18 1996-07-11 Kloeckner Moeller Gmbh Bewegungsflexibler Betätiger für Sicherheitspositionsschalter
DE102009053717B4 (de) 2009-11-18 2016-05-04 K.A. Schmersal Holding Gmbh & Co. Kg Anordnung mit einem Sicherheitsschalter oder einer Sicherheitszuhaltung und einem mechanischen Betätiger

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3625035A (en) * 1968-10-25 1971-12-07 Bosch Gmbh Robert Lock construction
DE6803835U (de) * 1968-10-25 1969-07-10 R Bosch Gmbh Elektrischer schalter, insbesondere lichtzuendschalter fuer kraftfahrzeuge
DE3100862C2 (de) * 1981-01-14 1984-02-09 K.A. Schmersal Gmbh & Co, 5600 Wuppertal Sicherheitsschalter
DE3442949A1 (de) * 1984-11-24 1986-06-05 Bayerische Motoren Werke AG, 8000 München Gepaecktraeger fuer ein kraftfahrzeug, insbesondere personenkraftwagen
DE8807681U1 (fr) * 1988-06-14 1988-08-18 K.A. Schmersal Gmbh & Co, 5600 Wuppertal, De
DE3943376C1 (fr) * 1989-12-30 1991-06-20 Kloeckner-Moeller Gmbh, 5300 Bonn, De

Also Published As

Publication number Publication date
EP0561314A1 (fr) 1993-09-22
DE4209086C1 (fr) 1993-05-27

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