EP0920043A2 - Interrupteur de sécurité - Google Patents

Interrupteur de sécurité Download PDF

Info

Publication number
EP0920043A2
EP0920043A2 EP98118252A EP98118252A EP0920043A2 EP 0920043 A2 EP0920043 A2 EP 0920043A2 EP 98118252 A EP98118252 A EP 98118252A EP 98118252 A EP98118252 A EP 98118252A EP 0920043 A2 EP0920043 A2 EP 0920043A2
Authority
EP
European Patent Office
Prior art keywords
actuator
plunger
housing
pawl
switch
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
EP98118252A
Other languages
German (de)
English (en)
Other versions
EP0920043B1 (fr
EP0920043A3 (fr
Inventor
Rolf Dipl.-Ing. Wecke
Roland Dipl.-Ing. Mönnings
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.)
Bernstein AG
Original Assignee
Hans Bernstein Spezialfabrik fur Schaltkontakte & Co 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8049070&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0920043(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Hans Bernstein Spezialfabrik fur Schaltkontakte & Co GmbH filed Critical Hans Bernstein Spezialfabrik fur Schaltkontakte & Co GmbH
Publication of EP0920043A2 publication Critical patent/EP0920043A2/fr
Publication of EP0920043A3 publication Critical patent/EP0920043A3/fr
Application granted granted Critical
Publication of EP0920043B1 publication Critical patent/EP0920043B1/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

Definitions

  • the present invention relates to a safety switch with one in one Switch housing axially displaceably mounted and provided with a switching bridge, spring-loaded plunger, an actuator at one of its ends has in the form of a pawl in the area of an insertion opening for is a bracket-like actuator and cooperates with the actuator such that the plunger - and thus also the switching bridge - when the actuator is retracted in the switched-on position and moved to the off position when the actuator is pulled out is
  • the present invention has for its object a safety switch Generic type to design so that the aforementioned requirement with special simple constructive means can be met.
  • the pawl consists of an essentially U-shaped bracket, which is in the region of its central web is pivotally mounted in the housing and with one of its side legs in engages a recess of the plunger and the other side leg above of the plunger, the latter side leg with the actuator retracted engages behind this and pulling the actuator completely out of the Housing only permitted in the off position.
  • a second solution to the problem underlying the present invention is the fact that the pawl consists of an essentially U-shaped bracket, the one in the front area of one of its side legs articulated to the tappet is, in the area of its central web, by a pin on the housing side has penetrating elongated hole and with its second side leg when retracted Actuator engages behind this and pulling the Actuator from the housing only allowed in the off position.
  • reference numeral 1 is a total of a safety switch designated, within a switch housing 2 with a plunger 3 is provided, which carries a switching bridge 4.
  • the plunger 3 is by springs 5 loaded in the axial direction, in such a way that the plunger 3 through these springs 5 constantly in the direction of extension, indicated by the arrow A in Figures 1 and 4, is charged.
  • the plunger 3 is in each case by a bracket-like actuator 6, which can be inserted into the switch housing 2 through an insertion opening 7 and which presses on the plunger 3 against the action of the spring 5, in the switched-on position moved into the switch housing 2.
  • Actuator in the form of a pawl 8 provided with the actuator 6 interacts.
  • the pawl 8 is approximately U-shaped Bracket formed, which is pivotable in the region of its central web 9 in the housing 2 is stored.
  • a pivot axis 10 is fixed in the housing 2 is and the middle web 9 passes through, provided.
  • One of the side legs 11 of the U-shaped bracket engages in a recess 12 of the plunger 3.
  • the second side leg 13 of the U-shaped bracket engages behind the retracted one Actuator 6 as soon as it is inserted into the switch housing 2 and the plunger 3 has actuated.
  • FIGS. 2 and 3 show the positions that correspond to the switch-off position.
  • the position of the actuator 6 is indicated in Figure 2, which results when this actuator 6 is inserted into the insertion opening 7 of the switch housing 2 is and strikes the plunger 3.
  • Figure 3 that position of the actuator 6, which is shown shortly before the actuator 6 is finally pulled out the housing 2 results.
  • Figures 2 and 3 make it very clear that in the off position the bracket-like actuator 6 on the second side leg without disabilities 13 the pawl can be moved past.
  • the side leg 13 of the U-shaped bracket engages behind the actuator 6, so that when the actuator 6 is subsequently pulled out a reverse Swiveling of the U-shaped bracket while taking the Tappet 3 in the off position.
  • FIGS 1-3 make it clear that in the area of the switch housing 2 a ball ratchet 14 is provided, the position of the tappet via this ball ratchet 14 3 is mechanically fixed in the off position. This increases the security of the entire switch concept, since this prevents the Plunger 3 if the safety switch 1 is installed in an unfortunate position due to gravity could be moved to an on position when the springs 5 are destroyed or are damaged.
  • the embodiment of the invention according to Figures 4-6 differs of the embodiment described above only in that here the pawl 8, which is also designed as an approximately U-shaped bracket, is articulated to the plunger 3 in the area of one of its side legs 11a and in the region of its central web 9a has an elongated hole 15 which is in the Switch housing 2 set pin 16 has passed.
  • the second side leg 13a of the U-shaped bracket engages behind when the actuator 6 is inserted, as in the case of Exemplary embodiment according to FIGS. 1-3 said actuator 6 and ensures that when pulling the actuator 6 in any case, the plunger 3 from his Switch-on position according to FIG. 4 into a switch-off position according to FIGS. 5 and 6 is also moved when the springs 5 loading the plunger 3 are damaged or are destroyed. Only after the pawl 8 has pivoted sufficiently up to the positions shown in FIGS. 5 and 6, the actuator 6 can completely are pulled out of the switch housing 2 or to be actuated again of the plunger 3 can be reinserted into the switch housing.
  • a securing of the switch-off position shown in FIGS. 5 and 6 is in the there embodiment given that the side leg 11a with a rounded recess 17 is provided, in which a spring-loaded Locking cam 18 engages when the pawl 8 overall in the release position for the actuator 6 is pivoted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Air Bags (AREA)
  • Control Of Combustion (AREA)
  • Push-Button Switches (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Mechanisms For Operating Contacts (AREA)
EP98118252A 1997-11-25 1998-09-25 Interrupteur de sécurité Expired - Lifetime EP0920043B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29720862U 1997-11-25
DE29720862U DE29720862U1 (de) 1997-11-25 1997-11-25 Sicherheitsschalter

Publications (3)

Publication Number Publication Date
EP0920043A2 true EP0920043A2 (fr) 1999-06-02
EP0920043A3 EP0920043A3 (fr) 2000-05-03
EP0920043B1 EP0920043B1 (fr) 2004-05-06

Family

ID=8049070

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98118252A Expired - Lifetime EP0920043B1 (fr) 1997-11-25 1998-09-25 Interrupteur de sécurité

Country Status (6)

Country Link
US (1) US5964342A (fr)
EP (1) EP0920043B1 (fr)
AT (1) ATE266251T1 (fr)
DE (2) DE29720862U1 (fr)
DK (1) DK0920043T3 (fr)
ES (1) ES2216227T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201700077432A1 (it) * 2017-07-10 2019-01-10 Astra S R L Contatto elettrico di sicurezza con azionamento mediante chiave di azionamento asportabile
DE202021104834U1 (de) 2021-09-08 2021-09-15 Bernstein Aktiengesellschaft Sicherheitsschalter

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6501040B2 (en) 2001-05-18 2002-12-31 Honeywell International Inc. Dual directional cable actuated emergency stop device
FR2862810B1 (fr) * 2003-11-21 2006-01-06 Schneider Electric Ind Sas Interrupteur de position de securite
US7232965B2 (en) * 2004-03-19 2007-06-19 Square D Company Linear motion compensator
GB0620540D0 (en) * 2006-10-17 2006-11-22 Idem Safety Switches Ltd Safety switch
IT201700077454A1 (it) * 2017-07-10 2019-01-10 Astra S R L Contatto elettrico di sicurezza con azionamento mediante chiave di azionamento asportabile

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0345656A2 (fr) * 1988-06-10 1989-12-13 Hans & Jos. Kronenberg GmbH Interrupteur de sécurité
DE29609012U1 (de) * 1996-05-20 1996-10-24 Hans Bernstein, Spezialfabrik für Schaltkontakte GmbH & Co, 32457 Porta Westfalica Sicherheitsschalter

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3699276A (en) * 1971-04-05 1972-10-17 Appleton Electric Co Linear push plunger electrical switch with tubular shroud arc prevention means
US5359163A (en) * 1993-04-28 1994-10-25 Eaton Corporation Pushbutton switch with adjustable pretravel

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0345656A2 (fr) * 1988-06-10 1989-12-13 Hans & Jos. Kronenberg GmbH Interrupteur de sécurité
DE29609012U1 (de) * 1996-05-20 1996-10-24 Hans Bernstein, Spezialfabrik für Schaltkontakte GmbH & Co, 32457 Porta Westfalica Sicherheitsschalter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201700077432A1 (it) * 2017-07-10 2019-01-10 Astra S R L Contatto elettrico di sicurezza con azionamento mediante chiave di azionamento asportabile
EP3428943A1 (fr) * 2017-07-10 2019-01-16 Astra S.R.L. Contact électrique de sécurité actionné par une clé d'actionnement amovible
DE202021104834U1 (de) 2021-09-08 2021-09-15 Bernstein Aktiengesellschaft Sicherheitsschalter

Also Published As

Publication number Publication date
US5964342A (en) 1999-10-12
EP0920043B1 (fr) 2004-05-06
DE29720862U1 (de) 1998-01-15
ES2216227T3 (es) 2004-10-16
DE59811321D1 (de) 2004-06-09
DK0920043T3 (da) 2004-07-26
ATE266251T1 (de) 2004-05-15
EP0920043A3 (fr) 2000-05-03

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