EP0938113B1 - Interrupteur de sécurité - Google Patents

Interrupteur de sécurité Download PDF

Info

Publication number
EP0938113B1
EP0938113B1 EP99100233A EP99100233A EP0938113B1 EP 0938113 B1 EP0938113 B1 EP 0938113B1 EP 99100233 A EP99100233 A EP 99100233A EP 99100233 A EP99100233 A EP 99100233A EP 0938113 B1 EP0938113 B1 EP 0938113B1
Authority
EP
European Patent Office
Prior art keywords
housing
switching roller
switching
actuating
plunger
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
EP99100233A
Other languages
German (de)
English (en)
Other versions
EP0938113A1 (fr
Inventor
Dipl.-Ing. Wecke Rolf
Ralph Hoppmann
Dipl.-Ing. Mönnings Roland
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
Bernstein AG
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 Bernstein AG filed Critical Bernstein AG
Publication of EP0938113A1 publication Critical patent/EP0938113A1/fr
Application granted granted Critical
Publication of EP0938113B1 publication Critical patent/EP0938113B1/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
    • 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
    • H01H2027/005—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 the key receiving part having multiple openings to allow keys from different directions to operate the switch

Definitions

  • the present invention relates to a safety switch with a housing and one rotatably mounted therein and used to actuate a switching plunger Shift drum, which has an actuator that can be inserted into the housing from the outside is rotatable a predetermined angular amount.
  • a safety switch is e.g. known from EP-A-0 778 595.
  • Safety switches of the type mentioned above are known in many embodiments and serve, for example, when opening protective covers on machines, Devices or the like to ensure that by opening a protective cover the corresponding machine or device is immediately switched off becomes.
  • Safety switches of the generic type can of course can also be used for many other purposes.
  • the known safety switches are provided with specially designed actuators and only to be operated via these special actuators, whereby this design corresponds to the The purpose is to outsmart the safety switch using simple tools or to prevent the like.
  • the magnets are only attached to the outside of the Entry openings for the actuator.
  • the present invention has for its object a safety switch to improve the generic type in a simple and practical manner, that additional security requirements that occur in practice can be met.
  • a solution to this problem is that at least a cam disc or an eccentric disc against rotation at one end edge of the shift drum is attached, on the outer edge of a slidably mounted in the housing and spring-loaded plunger, which is applied when the shift drum is actuated the cam disc or the eccentric disc against the action of at least one Spring is shifted and in the actuating end position of the shift drum, the cam or the eccentric disc and thus the shift drum with one of the Actuating direction of rotation applies the same torque.
  • Another solution to the problem of the invention is that at least a cam disc or an eccentric disc on one end edge of the shift drum is secured against rotation, on the outer edge of which is displaceable in the housing mounted and spring loaded plunger is present when the shift drum is actuated through the cam disc or the eccentric disc against the effect at least a spring is shifted and in the actuating end position of the shift drum Cam disc or the eccentric disc and thus the shift drum with one the torque opposite to the direction of actuation is applied.
  • master keys For example, when setting up machine tools, it may be necessary to be able to switch on the machine in question despite the protective hood being open. There in in such a case there is an increased danger factor, in many Operated so-called "master keys" issued to particularly reliable employees.
  • master key corresponds in terms of its design the usual actuator for a safety switch, so that the concerned Person manually push the master key into the insertion opening of a safety switch insert and operate the safety switch.
  • a machine can only be used while the protective hood is open stay on, like a correspondingly reliable and possibly A person who has been specially trained in safety technology is aware of the master key press into the housing and hold in the actuation position.
  • the reference symbol 1 denotes a safety switch, the one with a housing 2 shown only partially and one stored therein and the actuation of a shift plunger 3 serving shift drum 4 is.
  • the switching plunger 3 can be clearly seen in FIGS. 7 and 8.
  • the invention deals with the possibility of additional security aspects the implementation of the safety switch 1.
  • a safety switch 1 is thus in the exemplary embodiments according to FIGS. 1-4 shown that in the case of an actuation by an external into the housing 2nd insertable actuator 5 increased security against accidental ejection this actuator 5 has.
  • Such increased security against accidental ejection of the actuator 5 is advantageous, for example, when the safety switch 1 in question Special vibrations, shocks or the like comes.
  • a cam 6 is secured against rotation set, on the outer edges 6a, a plunger 7 rests, which is inside the housing 2 is slidably mounted and loaded by springs 8.
  • the cams 6 are designed so that the tappet 7 when the shift drum 4 is actuated is moved against the action of the springs 8 and that in this actuation end position the shift drum 4 a torque by the spring-loaded plunger 7 is applied to the cams 6, the direction of which is identical to that Direction of rotation of the shift drum 4.
  • FIGS. 5 and 6 show an exemplary embodiment of the invention in which a different security concept is pursued.
  • Actuator 5 holds the shift drum 4 in the actuation end position only as long as a person who has introduced the master key, corresponding external forces on the master key.
  • the cams 6 are designed so that by the spring-loaded plunger 7 in the actuating end position of the shift drum 4 Torque applied to the cam discs 6 and thus also to the shift drum 4 which is the opposite direction of actuation of the shift drum 4 is. So becomes a master key inserted by hand from the person concerned let go, either by inattentiveness or by distraction kind, the master key 5 is immediately over by actuating the shift drum 4 the spring-loaded plunger 7 and the cams 6 moved out of the housing 2 and the safety switch 1 brought into the off position.
  • Both in the embodiment of the invention according to Figures 1-4 and in Embodiment according to Figures 5 and 6 are on both front edges of the Shift drum 4 cams 6 fixed against rotation.
  • Deviating from the exemplary embodiments shown, can be on or on Both front edges of the shift drum 4 can also be fitted with eccentric discs which have the same functions as the cam disks described 6th
  • the cams 6 are geometric designed so that these cams 6 by simply "plugging" the two specified, can perform different functions.
  • FIGS. 7 and 8 make clear, is on the front edge of the shift drum 4 a pin 9 is attached, which in a corresponding opening 10 of the respective Cam 6 engages, which is otherwise attached to the axis 11 of the shift drum 4 is.
  • a pin 9 is attached, which in a corresponding opening 10 of the respective Cam 6 engages, which is otherwise attached to the axis 11 of the shift drum 4 is.
  • the tappet 7 is chamfered like a roof in the contact area to the cam plates 6, whereby the sequence of movements between the cams 6 on the one hand and the Tappet 7, on the other hand, can be made relatively smooth.
  • FIGS. 2-8 each show two actuators 5, with reference to this here is that this is only to signal that an actuator 5 from different Directions can be retracted into the housing 2. In practice of course, only one actuator 5 will ever be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Air Bags (AREA)
  • Control Of Combustion (AREA)
  • Gear-Shifting Mechanisms (AREA)
  • Push-Button Switches (AREA)
  • Mechanical Control Devices (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)

Claims (7)

  1. Interrupteur de sécurité (1) comportant un boítier (2) et un rouleau de commande (4) monté tournant à l'intérieur et servant à l'actionnement d'un poussoir de commande (3), lequel rouleau de commande peut tourner d'un angle prédéterminé, au moyen d'un actionneur (5) qui peut être introduit de l'extérieur dans le boítier (2), caractérisé en ce que sur au moins un bord frontal du rouleau de commande (4) est fixé solidairement en rotation un disque à came (6) ou un disque à excentrique sur le bord extérieur (6a) duquel s'applique un poussoir (7) monté de manière à pouvoir coulisser dans le boítier (2) et soumis à un ressort, lequel poussoir est déplacé, lorsque le rouleau de commande (4) est actionné, par le disque à came (6) ou le disque à excentrique, à l'encontre de l'effet d'au moins un ressort (8) et, en position finale d'actionnement du rouleau de commande (4), agit sur le disque à came (6) ou le disque à excentrique et donc aussi sur le rouleau de commande (4) avec un couple de rotation de même sens que le sens de rotation d'actionnement.
  2. Interrupteur de sécurité (1) comportant un boítier (2) et un rouleau de commande (4) monté tournant à l'intérieur et servant à l'actionnement d'un poussoir de commande (3), lequel rouleau de commande peut tourner d'un angle prédéterminé, au moyen d'un actionneur (5) qui peut être introduit de l'extérieur dans le boítier (2), caractérisé en ce que sur au moins un bord frontal du rouleau de commande (4) est fixé solidairement en rotation un disque à came (6) ou un disque à excentrique sur le bord extérieur (6a) duquel s'applique un poussoir (7) monté de manière à pouvoir coulisser dans le boítier (2) et soumis à un ressort, lequel poussoir est déplacé, lorsque le rouleau de commande (4) est actionné, par le disque à came (6) ou le disque à excentrique, à l'encontre de l'effet d'au moins un ressort (8) et, en position finale d'actionnement du rouleau de commande (4), agit sur le disque à came (6) ou le disque à excentrique et donc aussi sur le rouleau de commande (4) avec un couple de rotation de sens opposé au sens de rotation d'actionnement.
  3. Interrupteur de sécurité comportant un boítier et un rouleau de commande monté tournant à l'intérieur et servant à l'actionnement d'un poussoir de commande, lequel rouleau de commande peut tourner d'un angle prédéterminé, au moyen d'un actionneur qui peut être introduit de l'extérieur dans le boítier, selon la revendication 1, caractérisé en ce que le tronçon de came, situé dans la plage angulaire de rotation utile du rouleau de commande (4), du disque à came (6) - vu dans le sens de rotation d'actionnement du rouleau de commande (4) - est réalisé de manière à monter constamment jusque peu avant d'atteindre la position finale d'actionnement, et redescend après dépassement d'un point mort haut.
  4. Interrupteur de sécurité comportant un boítier et un rouleau de commande monté tournant à l'intérieur et servant à l'actionnement d'un poussoir de commande, lequel rouleau de commande peut tourner d'un angle prédéterminé, au moyen d'un actionneur qui peut être introduit de l'extérieur dans le boítier, selon la revendication 2, caractérisé en ce que le tronçon de came, situé dans la plage angulaire de rotation utile du rouleau de commande (4), du disque à came (6) - vu dans le sens de rotation d'actionnement du rouleau de commande (4) - est réalisé de manière à monter constamment jusqu'à ce que soit atteinte la position finale d'actionnement.
  5. Interrupteur de sécurité comportant un boítier et un rouleau de commande monté tournant à l'intérieur et servant à l'actionnement d'un poussoir de commande, lequel rouleau de commande peut tourner d'un angle prédéterminé, au moyen d'un actionneur qui peut être introduit de l'extérieur dans le boítier, selon une ou plusieurs des revendications précédentes, caractérisé en ce que chaque disque à came (6) est enfilé sur l'axe de rotation (11) du rouleau de commande (4) et est fixé solidairement en rotation par un doigt (9), solidaire du rouleau de commande (4), lequel pénètre dans un ajour (10) correspondant du disque à came (6).
  6. Interrupteur de sécurité comportant un boítier et un rouleau de commande monté tournant à l'intérieur et servant à l'actionnement d'un poussoir de commande, lequel rouleau de commande peut tourner d'un angle prédéterminé, au moyen d'un actionneur qui peut être introduit de l'extérieur dans le boítier, selon les revendications 3 à 5, caractérisé en ce que chaque disque à came (6) peut être relié au rouleau de commande (4) dans deux positions tournées de 180° l'une par rapport à l'autre.
  7. Interrupteur de sécurité comportant un boítier et un rouleau de commande monté tournant à l'intérieur et servant à l'actionnement d'un poussoir de commande, lequel rouleau de commande peut tourner d'un angle prédéterminé, au moyen d'un actionneur qui peut être introduit de l'extérieur dans le boítier, selon une ou plusieurs des revendications précédentes, caractérisé en ce que le poussoir (7) présente des chanfreins en forme de toit dans sa zone de contact coopérant avec le bord extérieur (6a) des disques à came (6).
EP99100233A 1998-02-20 1999-01-08 Interrupteur de sécurité Expired - Lifetime EP0938113B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29803028U DE29803028U1 (de) 1998-02-20 1998-02-20 Sicherheitsschalter
DE29803028U 1998-02-20

Publications (2)

Publication Number Publication Date
EP0938113A1 EP0938113A1 (fr) 1999-08-25
EP0938113B1 true EP0938113B1 (fr) 2003-02-05

Family

ID=8053015

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99100233A Expired - Lifetime EP0938113B1 (fr) 1998-02-20 1999-01-08 Interrupteur de sécurité

Country Status (5)

Country Link
US (1) US5959270A (fr)
EP (1) EP0938113B1 (fr)
DE (2) DE29803028U1 (fr)
DK (1) DK0938113T3 (fr)
ES (1) ES2188043T3 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10106228A1 (de) * 2001-02-10 2002-09-19 Euchner Gmbh & Co Sicherheitsschalter mit Entriegelungsscheibe
US6720508B2 (en) * 2001-07-06 2004-04-13 Omron Corporation Door switches
JP4522291B2 (ja) * 2005-03-08 2010-08-11 Ｉｄｅｃ株式会社 安全スイッチ
JP4673661B2 (ja) * 2005-04-26 2011-04-20 Ｉｄｅｃ株式会社 安全スイッチ
GB0515583D0 (en) * 2005-07-29 2005-09-07 Eja Ltd Safety switch operating mechanism
DE102006036514B3 (de) * 2006-08-04 2008-01-10 Moeller Gmbh Sicherheitsschalteinrichtung für die Verriegelung einer Schutzeinrichtung
US20080223012A1 (en) * 2007-03-13 2008-09-18 Black & Decker, Inc. Cordless electric mower fail-safe charge lockout
US9089723B2 (en) 2012-02-06 2015-07-28 Sapheco, LLC Safety Protection apparatus for personnel on oil drilling derricks
US10861660B2 (en) * 2017-02-24 2020-12-08 Idec Corporation Safety switch

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5464954A (en) * 1992-08-31 1995-11-07 Idec Izumi Corporation Safety switch assembly
DE4328297C1 (de) * 1993-08-23 1995-02-23 Euchner & Co Sicherheitsschalter
DE4338910C1 (de) * 1993-11-15 1995-02-16 Bernstein Hans Spezialfabrik Sicherheitsschalter
GB9326394D0 (en) * 1993-12-24 1994-02-23 Eja Eng Plc Safety switch assemblies
DE4408024C5 (de) * 1994-03-10 2007-09-06 Euchner Gmbh + Co. Kg Sicherheitsschalter
DE4436579C2 (de) * 1994-10-13 1997-05-22 Bernstein Hans Spezialfabrik Sicherheitsschalter
FR2741993B1 (fr) * 1995-12-05 1998-01-16 Schneider Electric Sa Interrupteur electrique de securite a cle
DE19602690C1 (de) * 1996-01-26 1997-04-10 Euchner & Co Sicherheitsschalter

Also Published As

Publication number Publication date
DE59904200D1 (de) 2003-03-13
US5959270A (en) 1999-09-28
EP0938113A1 (fr) 1999-08-25
DE29803028U1 (de) 1998-04-09
DK0938113T3 (da) 2003-06-02
ES2188043T3 (es) 2003-06-16

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