EP0175156B1 - Elektrischer Schalter - Google Patents

Elektrischer Schalter Download PDF

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Publication number
EP0175156B1
EP0175156B1 EP85110398A EP85110398A EP0175156B1 EP 0175156 B1 EP0175156 B1 EP 0175156B1 EP 85110398 A EP85110398 A EP 85110398A EP 85110398 A EP85110398 A EP 85110398A EP 0175156 B1 EP0175156 B1 EP 0175156B1
Authority
EP
European Patent Office
Prior art keywords
roller
housing
parts
electrical switch
actuating member
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
Application number
EP85110398A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0175156A2 (de
EP0175156A3 (en
Inventor
Karl-Georg Eicker
Burkhart Dr. Seim
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 EP0175156A2 publication Critical patent/EP0175156A2/de
Publication of EP0175156A3 publication Critical patent/EP0175156A3/de
Application granted granted Critical
Publication of EP0175156B1 publication Critical patent/EP0175156B1/de
Expired 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 an electrical switch according to the preamble of claim 1 and is based on EP-A-0117396, in which safety switch with anti-lock device, the switch contained in a special switch housing via a plunger and toggle lever of the control roller pivotably arranged in a special control housing is switched on or off, the control roller has a sector-like recess into which an actuating bracket inserted through a slot in the control housing engages with its front crossbar, one or more locking disks are provided, which are arranged in their corresponding projections on the crossbar of the actuating bracket Be brought to the working position, whereby only about a pivoting of the control roller is possible at the same time.
  • the slot in the control housing can be arranged in one or the other side wall or in the bottom wall facing away from the switch housing. The switch can then be operated from three sides.
  • the object of the invention is therefore to develop an electrical switch of the type mentioned in such a way that it can only be bypassed by a tool which has to be manufactured in more than one operation.
  • a tool that can bypass such a switch requires two spike-like extensions and two actuating surfaces and, for example, cannot be produced by a single bend in a piece of wire.
  • the switch shown has a switch housing 10 which is divided by transverse walls into a contact chamber, a sealing chamber and a roller chamber, of which only the roller chamber is shown here, cf. also DE-A-33 30 109.3. Connection contacts are permanently mounted in the contact chamber.
  • a plunger 24 carries a spring-loaded contact bridge 26 in the direction of the connection contacts, which connects the connection contacts in the closed position of the switch.
  • a compression spring is clamped between a housing end wall and the end of the plunger 24 facing it and supports the return of the plunger 24 to the position assigned to the switch opening.
  • the plunger 24 is guided straight on the transverse walls.
  • a sealing bellows interacts, on the one hand, with an extension of this transverse wall and, on the other hand, with the tappet 24 in order to seal the contact chamber against the outside atmosphere.
  • roller parts 42 are slidably mounted on a shaft 40.
  • the shaft 40 has a square cross section, so that the two roller parts 42 are coupled to one another in a rotationally fixed manner without hindering their axial displacement.
  • the two roller parts 42 are plastic injection molded parts or molded parts which are identical to one another.
  • the shaft 40 is mounted with its cylindrical end sections in the housing 10. So that the plunger 24 can be moved by rotating the roller against the action of the compression spring, it engages with a cam follower pin 44 in cam tracks 46, which are recessed in the mutually facing surfaces of the roller parts 42.
  • the cam tracks 46 have the shape of an elongated "3", and when the roller rotates in both directions of rotation, the plunger 24 is moved in the switch closing direction.
  • the actuator 50 is a plate-shaped part which has a centrally arranged slot 90, for. B. is attached to a flap 54 and be provided with openings 92, and with its free, serving to actuate the switch side 94 enter through one of four housing openings 56 and can abut against the wall 58 of radial slots 60 in the roller parts 42, whereby these are twisted.
  • one of the housing openings 56 is on one of the opposite side walls of the housing 10 and two others are mounted parallel to the other two in the bottom of the housing 10, an intermediate wall 96 which extends across the entire roller chamber, all housing openings 56 in two slots and also divided the roller chamber.
  • the slot 90 extends from the free side 94 to approximately to the flap 54, i. H. approximately up to the mounting surface of the actuator 50.
  • the roller parts 42 namely have a notch 64 in the area 62 to the side of the tappet 24, into each of which an extension 66 formed on the tappet 24 protrudes.
  • One of the end edges 68 of the notch 64 strikes against the extension 66 when the roller parts 42 rotate, unless the roller parts 42 are displaced axially away from the tappet 24, i. H. to be moved outwards. This is not possible with a simple U-bracket or a UU-shaped bracket.
  • a chamfer 70 which acts as a wedge surface, of the mutually facing edges of the radial slots 60, against which mandrel-like projections 72 which adjoin beard to slot 90 on the actuator 50 protrude from the free side 94 of the actuator 50 to the outside.
  • Flanks 74 of these extensions 72 press the two roller parts 42 outward against the force of a compression spring which is arranged between the corresponding housing inner wall and the facing surface of the respective roller part 42 and can be guided so closely by a sleeve and the shaft 40 that also if the spring breaks, a restoring force is developed.
  • the free end of the tappet 24, which carries the cam follower pin 44, can additionally be designed as a cam follower part which follows a cam surface 98 which is formed on an inwardly directed projection 100 of the roller part 42, which is integral therewith centrally to its axis.
  • the intermediate wall 96 can have a recess 102 for the shaft 40.
  • roller parts 42 are preferably provided on the side facing the housing 10 with an integrally connected guide sleeve 78, which comprise the section of the shaft 40 with a square cross section and serve to reduce the risk of the roller parts 42 tilting when axially displacing them on the shaft 40 practically turn off.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Push-Button Switches (AREA)
  • Saccharide Compounds (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Glass Compositions (AREA)
EP85110398A 1984-09-08 1985-08-20 Elektrischer Schalter Expired EP0175156B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3433048 1984-09-08
DE3433048A DE3433048C2 (de) 1984-09-08 1984-09-08 Elektrischer Schalter

Publications (3)

Publication Number Publication Date
EP0175156A2 EP0175156A2 (de) 1986-03-26
EP0175156A3 EP0175156A3 (en) 1987-04-22
EP0175156B1 true EP0175156B1 (de) 1989-05-17

Family

ID=6244941

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85110398A Expired EP0175156B1 (de) 1984-09-08 1985-08-20 Elektrischer Schalter

Country Status (3)

Country Link
EP (1) EP0175156B1 (ja)
JP (1) JPS6171515A (ja)
DE (2) DE3433048C2 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3943375A1 (de) * 1989-12-30 1991-07-11 Kloeckner Moeller Gmbh Schalter mit antriebskopf

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3819753A1 (de) * 1988-06-10 1989-12-14 Kronenberg Gmbh H & J Sicherheitsschalter
US4963706A (en) * 1989-01-12 1990-10-16 Eja Engineering Company Limited Safety switch assemblies
GB8901127D0 (en) * 1989-01-19 1989-03-15 Eja Eng Co Safety switch assemblies
DE3943376C1 (ja) * 1989-12-30 1991-06-20 Kloeckner-Moeller Gmbh, 5300 Bonn, De
EP0605820B1 (de) * 1993-01-05 1996-05-29 K.A. SCHMERSAL GmbH & Co. Sicherheitsschalter
DE4315376C1 (de) * 1993-05-08 1994-05-19 Schmersal K A Gmbh & Co Sicherheitsschalter
DE4303367C1 (de) * 1993-02-05 1994-02-24 Schmersal K A Gmbh & Co Sicherheitsschalter
DE4432862C1 (de) 1994-09-15 1995-10-26 Schmersal K A Gmbh & Co Radiusbetätiger für einen Sicherheitsschalter
DE19810735C2 (de) * 1998-03-12 2003-10-09 Schmersal K A Gmbh & Co Betätiger für einen Sicherheitsschalter
CN109599276B (zh) * 2018-12-16 2022-08-26 山西汾西重工有限责任公司 基于摆杆式限位信号开关的抗抖动开合方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3302631C2 (de) * 1983-01-27 1985-02-07 Hans & Jos. Kronenberg Gmbh, 5060 Bergisch Gladbach Sicherheitsschalter mit Fehlschließsicherung
DE3330109C2 (de) * 1983-08-20 1986-01-02 K.A. Schmersal Gmbh & Co, 5600 Wuppertal Elektrischer Schalter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3943375A1 (de) * 1989-12-30 1991-07-11 Kloeckner Moeller Gmbh Schalter mit antriebskopf

Also Published As

Publication number Publication date
DE3433048C2 (de) 1986-10-02
DE3570317D1 (en) 1989-06-22
JPH0237650B2 (ja) 1990-08-27
EP0175156A2 (de) 1986-03-26
DE3433048A1 (de) 1986-03-20
EP0175156A3 (en) 1987-04-22
JPS6171515A (ja) 1986-04-12

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