EP0778595A1 - Sicherheitsschalter mit Schlüssel - Google Patents

Sicherheitsschalter mit Schlüssel Download PDF

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Publication number
EP0778595A1
EP0778595A1 EP96402610A EP96402610A EP0778595A1 EP 0778595 A1 EP0778595 A1 EP 0778595A1 EP 96402610 A EP96402610 A EP 96402610A EP 96402610 A EP96402610 A EP 96402610A EP 0778595 A1 EP0778595 A1 EP 0778595A1
Authority
EP
European Patent Office
Prior art keywords
roller
control
key
release
switch according
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
EP96402610A
Other languages
English (en)
French (fr)
Other versions
EP0778595B1 (de
Inventor
Hugues Da Dalt
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.)
Schneider Electric Industries SAS
Original Assignee
Schneider Electric SE
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 Schneider Electric SE filed Critical Schneider Electric SE
Publication of EP0778595A1 publication Critical patent/EP0778595A1/de
Application granted granted Critical
Publication of EP0778595B1 publication Critical patent/EP0778595B1/de
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
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/04—Cases; Covers
    • H01H13/08—Casing of switch constituted by a handle serving a purpose other than the actuation of the switch
    • 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 an electrical key safety switch comprising a housing surmounted by a control head and housing electrical contact members, the control head comprising a control roller capable of acting on the contact members, as well as 'an unlocking part associated with the control roller to unlock the latter, the unlocking part and the control roller being controlled by the key when introducing it into the head.
  • Safety switches of this type are well known (see for example documents DE-33 02631 and EP-507 842).
  • the control roller is capable of rotating around an axis to control the contact members via a pushbutton and the control head has at least one passage slot for the key in a general direction perpendicular to the axis rotation of the roller.
  • the object of the invention is therefore to give the switch a high degree of inviolability and reliability, by means of a mechanism allowing the introduction of the control key in a direction orthogonal to the axis of the roller. control or in two directions orthogonal to each other and to the axis of rotation of the roller.
  • a lock of the control roller is housed in the head and is resiliently urged to engage in a notch of the control roller and the unlocking part is applicable by means a cam surface against the latch to release it from the notch when the key is inserted.
  • the unlocking part is a rotary roller adjacent to the control roller, coaxial with the latter and having on its periphery at least one notch for receiving the key, the shapes of the notches of the control roller and of the release roller and the control key being such that the key actuates at the start of introduction the release roller before the control roller.
  • the notch of the release roller then extends for example over a larger angle than the control roller.
  • two release rollers can be provided which are arranged symmetrically with respect to a central control roller, the latter being connected to the pusher by means of a link articulated to the central control roller and to the pusher.
  • two release rollers are provided which are arranged symmetrically with respect to a central control roller, the latter being connected by a link with a control pin and groove to the stock of a slide provided with a tail. constituting the pusher, the guide of the slide being carried out both by its tail in an orifice of the control head or of the housing and by cooperation of a guide groove of its stock with the shaft or the axis of rotation of the control roller.
  • the control roller can advantageously consist of two rollers each paired on the outside with an unlocking roller and coupled to each other on the inside by the axis of the link or of the slide.
  • the stick in an embodiment with two twin control rollers, can be placed in the central position and, in an embodiment with a single central control roller, the stick can be a fork having arms provided with control grooves and guide grooves , these arms laterally enveloping the release rollers.
  • the safety switch illustrated in FIG. 1 comprises on the one hand a housing 10 elongated in a direction Z and comprising an electrical contact block 11 and on the other hand a control head 12 of square shape, fixed on the housing 10 so as to be able to take at the user's choice four different positions offset by pivoting by 90 ° around an axis Z1 of direction Z.
  • the head 12 is assembled to the housing by any known means allowing the pivoting to the desired position and maintaining in this position.
  • the control head 12 has in one of its lateral faces 13 a slot 14 and in its upper face 15 opposite the block 11 an identical slot 16; the slots 14 and 16 are dimensioned to allow passage in one or the other of a flat control key 17 movable respectively in a direction Y or Z depending on the movement of a support of this key (not shown) .
  • the key 17 is for example rigidly or oscillatingly linked to an envelope door for electrical or machine equipment to guarantee a correlation between the closing of this door and the authorization of the operation of the equipment or of the machine given by the block of contacts.
  • the control key 17 has a particular shape to make the safety switch as unbreakable as possible.
  • transverse control bar 18 perpendicular to its direction of movement, for cooperating with a control roller 20 rotatably mounted in the head 12 by means of a shaft 21 of axis X perpendicular to the directions Y and Z and resting in head bearings.
  • the key further comprises two lateral ears 19a, 19b located level with the bar 18 and slightly advanced relative to the latter to cooperate with two rollers 30a, 30b for indirect release of the control roller.
  • the release rollers 30 are thin and are housed in the control head on each side of the control roller 20, being mounted on the same rotation shaft 21 of axis X.
  • the rollers 20, 30, have a shape general particular and similar, forming part of the same circular outline, but presenting however differences. They cooperate with a pair of respective latches 40a, 40b, mounted to slide in the direction Z in housings 40c provided in the cylindrical lower wall of the control head 12, on either side of an orifice 41 provided for passage a link 42 articulated on the one hand on an axis 22 of the roller control 20, on the other hand on an axis 43 of a pusher 44 guided in the cylindrical lower part of the orifice 41 and provided for actuating the contact block 11.
  • the axis 22 is housed in a central recess 23 of the roller 20 sufficient to allow the functional clearance of the link (see Figure 3). It will also be noted that the link 42 is oriented at rest in a direction close to the axis Z1.
  • the control roller 20 has on its periphery two notches 24, 25 of identical shape.
  • the notch 24 comprises a front front 24a on which the front of the bar 18 of the key 17 applied in the slot 14 is applied in the direction Y and a rear front 24b on which the rear of the bar 18 when the key is removed.
  • a locking notch 26 is provided on the periphery of the roller; the shape of the notch allows the latches 40a, 40b to engage therein under the effect of their return springs 45.
  • Another notch 27 is provided on the periphery of the roller for the application of a pin part 46a of a return spring 46 common to the rollers.
  • a stop can be located on the periphery of the roller to stop it against an A7 shoulder of the control head and thus confirm the locking position.
  • the unlocking rollers 30 each comprise two notches 31, 32, of identical shape.
  • the notch 31 has a front edge 31a located at rest at the front edge 24a of the notch 24 of the roller 20; an ear 19 of the key 17 can be applied to this front 31a.
  • the notch 31 also has a rear front 31b located at rest below the rear front 24b of the notch 24 (see FIG. 2).
  • a notch 33 of each roller 30 is associated with a cam surface 33a which cooperates with a lock 40 so that the latter retracts as soon as the roller 30 rotates clockwise (FIGS. 2 to 4); a notch 34 is located on the periphery of the rollers 30 at the level of the notch 27 of the roller 20, but extending over a smaller sector, to accommodate the pin portion 46a of the spring 46.
  • the safety switch comprises two control rollers 20a, 20b, and two release rollers 30a, 30b externally coupled to these.
  • the profiles of the rollers are similar to those of the previous embodiment.
  • the connection of the control rollers 20a, 20b with the pusher is constituted by a slide 50 provided with a tail 51 which forms the pusher itself and a stick 52 presenting a lumen 53 into which penetrates a control pin 54 coupling the two control rollers 20.
  • the light 53 can have any suitable shape; here it has an L shape with vertical groove 53z, that is to say oriented in the direction Z, and with horizontal groove 53y, that is to say oriented in the direction Y.
  • control groove 53y In the control groove 53y is engaged a control axis 54 coupling the rollers 20a, 20b so that the movement of the axis generated by the movement of the key 17 causes the displacement of the slide 50; in the guide groove 53z is engaged the shaft 21 on which the four rollers 20, 30 pivot, this forcing the slide 50 to move in translation in the direction Z.
  • the shaft 21 is mounted in wall bearings 21a of the control head, these walls being dimensioned to take up the significant forces exerted on the shaft.
  • the return spring 46 of the rollers also recalls the slide 50 in the high rest position.
  • two return springs 45 are associated with the locks 40, it is also possible to provide for the two locks a common return spring.
  • the release rollers may have a slightly different diameter from that of the control roller (s).
  • a return spring 56 is associated with each release roller 30; to facilitate understanding, the control roller (s) have not been shown.
  • the spring 56 is a torsion spring mounted in a thin support piece 60 itself fitted or embedded over part of its thickness in a suitable opening 61 of the release roller to be integral in rotation; the part 60 can of course be assembled in another way to the release roller.
  • the part 60 comprises a body 62 profiled so as to fit into the profile of the notches 31, 32 of the roller 30 so as not to hinder the operation of the key; the body 62 has housings 63,64 for the respective branches 57,58 of the torsion spring 56; the branch 57 is applied against a fixed stop 59 of the control head 12.
  • the slide 50 houses, in a recess 51a of its tail 51 which forms the pusher associated with the contact block, the latches 40 and their return spring 45, the latches being guided by suitable conformations of the recess; the slide 50 has at its upper part a stick 52 in the form of a fork, the arms 52a, 52b of which surround the rollers 30 laterally.
  • Each arm comprises a vertical guide groove 53z and a control groove 53f oriented along an axis F inclined with respect to in the direction Y.
  • control head is illustrated in the rest position in FIG. 8, the control key 17, linked to the envelope or machine door, then being released from the switch and the contact block then being pressed by the push button 51.
  • the control key 17 is introduced into the slot 14 (or into the slot 16 depending on the previously chosen assembly). As can be seen in FIG.
  • the lugs 19 of the key start by applying to the front front 31a of the notches 31 and causing the unlocking rollers 30 to rotate in a clockwise direction against the force of the spring 46; the strip 18 is not yet applied against the front edge 24a of the notches 24 of the control rollers 20; the cam surfaces 33a of the notches 33 push the latches 40 back by compressing their return springs 45, then the strip 18 is applied against the fronts 24a (see FIG. 9) and the rollers 20 then unlocked also begin to rotate clockwise .
  • the key 17 continues to advance and rotates all of the rollers 20.30 together; the rotation of the control rollers 20 causes the rotation of the control pin 54 which causes the lifting of the slide 50 guided by its push-tail 51 in the bore 41 and by the groove 53z against the shaft 21.
  • the push-button 51 disengages from the control part 11a of the contact block 11 and releases the latter, the contacts of which switch to allow the implementation of the controlled system (see FIG. 10).
  • the control key 17 moves in the opposite direction in the slot 14 and, by the rear heel of the bar 18, is applied against the rear fronts 24b, 31b, of the rollers 20, 30, which rotate together counterclockwise, this movement being helped by the relaxation of the spring 46; the slide 50 descends to switch the contacts of the block 11.
  • the cam surfaces 33a of the release rollers 30 release the latches 40 which are reinstalled under the effect of their springs 47 in the notches 26 of the control rollers 20 and the notches 33 rollers 30, which defines the stop position of these rollers.
  • the device finds itself in its rest position in FIG. 8.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Push-Button Switches (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
EP96402610A 1995-12-05 1996-12-03 Sicherheitsschalter mit Schlüssel Expired - Lifetime EP0778595B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9514949 1995-12-05
FR9514949A FR2741993B1 (fr) 1995-12-05 1995-12-05 Interrupteur electrique de securite a cle

Publications (2)

Publication Number Publication Date
EP0778595A1 true EP0778595A1 (de) 1997-06-11
EP0778595B1 EP0778595B1 (de) 2001-08-16

Family

ID=9485585

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96402610A Expired - Lifetime EP0778595B1 (de) 1995-12-05 1996-12-03 Sicherheitsschalter mit Schlüssel

Country Status (8)

Country Link
US (1) US5898143A (de)
EP (1) EP0778595B1 (de)
JP (1) JP3880668B2 (de)
KR (1) KR100262416B1 (de)
CN (1) CN1095180C (de)
DE (1) DE69614488T2 (de)
ES (1) ES2160219T3 (de)
FR (1) FR2741993B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0933794A2 (de) * 1998-02-02 1999-08-04 Pizzato Elettrica S.r.l. Elektrischer Sicherheitsschalter
EP0938113A1 (de) * 1998-02-20 1999-08-25 HANS BERNSTEIN SPEZIALFABRIK FÜR SCHALTKONTAKTE GmbH & CO. Sicherheitsschalter

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19649717A1 (de) * 1996-11-30 1998-06-04 Euchner Gmbh & Co Sicherheitsschalter
JP4508434B2 (ja) * 2001-01-29 2010-07-21 Ｉｄｅｃ株式会社 安全スイッチ
DE10106228A1 (de) * 2001-02-10 2002-09-19 Euchner Gmbh & Co Sicherheitsschalter mit Entriegelungsscheibe
TW502864U (en) * 2001-09-07 2002-09-11 High Tech Comp Corp Power switch device which is easy to turn on and difficult to turn off
DE10308450A1 (de) * 2003-02-24 2004-09-16 E.G.O. Elektro-Gerätebau GmbH Drehschalter mit Schaltwelle für ein Elektrogerät
GB0405543D0 (en) * 2004-03-10 2004-04-21 Eja Ltd Switch mechanism
JP4396478B2 (ja) * 2004-10-21 2010-01-13 オムロン株式会社 キースイッチ
CN104347302B (zh) * 2013-07-30 2016-12-07 上海雷尼威尔测量技术有限公司 安全控制装置
CN104347303B (zh) * 2013-07-30 2016-08-10 上海球栅测量系统有限公司 安全控制装置
DE102015002863A1 (de) * 2015-03-06 2016-09-08 E. Dold & Söhne KG Sicherheitsschalteranordnung
JP6737876B2 (ja) 2017-02-24 2020-08-12 Idec株式会社 安全スイッチ
CN111668042B (zh) * 2020-06-19 2023-01-03 三实电器(漳州)有限公司 一种带强制动作机构组合开关模块的使用方法
CN112018681B (zh) * 2020-09-01 2021-09-28 盐城市华悦汽车部件有限公司 一种便于电动汽车供电线束的固定装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3302631A1 (de) 1983-01-27 1984-08-02 Hans & Jos. Kronenberg Gmbh, 5060 Bergisch Gladbach Sicherheitsschalter mit fehlschliesssicherung
GB2173043A (en) * 1985-03-18 1986-10-01 Telemecanique Electrique Key and cam operated switch
EP0507842A1 (de) 1989-12-30 1992-10-14 Kloeckner Moeller Gmbh Schalter mit antriebskopf.
DE4338910C1 (de) * 1993-11-15 1995-02-16 Bernstein Hans Spezialfabrik Sicherheitsschalter

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4658102A (en) * 1984-09-08 1987-04-14 K. A. Schmersal Gmbh & Co. Electric switch
US4963706A (en) * 1989-01-12 1990-10-16 Eja Engineering Company Limited Safety switch assemblies
WO1994006141A1 (en) * 1992-08-31 1994-03-17 Idec Izumi Corporation Safety switch assembly
DE4303367C1 (de) * 1993-02-05 1994-02-24 Schmersal K A Gmbh & Co Sicherheitsschalter
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

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3302631A1 (de) 1983-01-27 1984-08-02 Hans & Jos. Kronenberg Gmbh, 5060 Bergisch Gladbach Sicherheitsschalter mit fehlschliesssicherung
GB2173043A (en) * 1985-03-18 1986-10-01 Telemecanique Electrique Key and cam operated switch
EP0507842A1 (de) 1989-12-30 1992-10-14 Kloeckner Moeller Gmbh Schalter mit antriebskopf.
DE4338910C1 (de) * 1993-11-15 1995-02-16 Bernstein Hans Spezialfabrik Sicherheitsschalter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0933794A2 (de) * 1998-02-02 1999-08-04 Pizzato Elettrica S.r.l. Elektrischer Sicherheitsschalter
EP0933794A3 (de) * 1998-02-02 2000-01-12 Pizzato Elettrica S.r.l. Elektrischer Sicherheitsschalter
EP0938113A1 (de) * 1998-02-20 1999-08-25 HANS BERNSTEIN SPEZIALFABRIK FÜR SCHALTKONTAKTE GmbH & CO. Sicherheitsschalter

Also Published As

Publication number Publication date
ES2160219T3 (es) 2001-11-01
CN1095180C (zh) 2002-11-27
KR100262416B1 (ko) 2000-08-01
KR970051584A (ko) 1997-07-29
DE69614488T2 (de) 2001-11-29
EP0778595B1 (de) 2001-08-16
FR2741993B1 (fr) 1998-01-16
DE69614488D1 (de) 2001-09-20
JP3880668B2 (ja) 2007-02-14
CN1165387A (zh) 1997-11-19
FR2741993A1 (fr) 1997-06-06
US5898143A (en) 1999-04-27
JPH09180587A (ja) 1997-07-11

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