EP0982747A2 - Interrupteur de sécurité - Google Patents

Interrupteur de sécurité Download PDF

Info

Publication number
EP0982747A2
EP0982747A2 EP99124187A EP99124187A EP0982747A2 EP 0982747 A2 EP0982747 A2 EP 0982747A2 EP 99124187 A EP99124187 A EP 99124187A EP 99124187 A EP99124187 A EP 99124187A EP 0982747 A2 EP0982747 A2 EP 0982747A2
Authority
EP
European Patent Office
Prior art keywords
key
safety switch
locking member
control disc
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
EP99124187A
Other languages
German (de)
English (en)
Other versions
EP0982747A3 (fr
EP0982747B1 (fr
Inventor
Erik BÄCHLE
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.)
Euchner GmbH and Co KG
Original Assignee
Euchner 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 Euchner GmbH and Co KG filed Critical Euchner GmbH and Co KG
Publication of EP0982747A2 publication Critical patent/EP0982747A2/fr
Publication of EP0982747A3 publication Critical patent/EP0982747A3/fr
Application granted granted Critical
Publication of EP0982747B1 publication Critical patent/EP0982747B1/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 invention relates to a safety switch with the features of The preamble of claim 1.
  • Safety switches of this type such as those from the DE 44 08 024 A1 are known, are used to power the to make electrical machines dependent on whether certain Protective devices of the machine are in the correct position.
  • the safety switch does not switch the control circuit for the machine power supply, because the protective devices have larger tolerances than the safety switch allows.
  • WO 93/24947 shows a generic safety switch two non-parallel key channels and one movable actuator of a device for fixing the Control disc.
  • the safety switch has a large number of individual parts and is therefore complex to manufacture and assemble.
  • the invention is based on the problem of a safety switch to provide, which overcomes the disadvantages of the prior art, especially simple and inexpensive to manufacture and Assembly is and is also versatile.
  • the safety switch according to the invention is simple in construction and has few individual parts. Because of the two, not parallel to each other and preferably mutually perpendicular key channels into which either the key can be inserted, is the safety switch versatile. Actuators, which when not introduced Key protrude into the key channels and preferably with locking members are connected to fix the control disc in this position when inserting the key the control disc is free. The number of necessary components is reduced in a simple manner, if such Actuator along a bisector of the two Key channels is movable and therefore in both key channels can protrude at the same time. Another advantageous reduction in the number of Components is achieved when the actuator as Locking member is formed.
  • the inserted key has a certain insertion depth after the rotary movement of the control disc has ended.
  • the means for fixing a deeper insertion of the key i.e. a larger one
  • Protective devices that do not close exactly can also be reliably monitored.
  • Advantageous embodiments are provided in which at least some of these means fix the control disk even when the key is not inserted.
  • the means for fixing in that the control disk has at least one recess has that with a movable relative to the control disc locking element cooperates.
  • the recess can, for example, in a laterally on the control disc molded material portion may be provided while the locking element then on a side of the control disc and relative to this movable locking member is formed.
  • the recess and locking element can also be used for example be realized that the recess in an area of the control disc is provided, which when the control disc rotates in the Key channel protrudes, and that the locking element is provided on the key.
  • a slit, fork-shaped key results a particularly simple implementation of the locking element by shoulders provided on the inside of the slot.
  • the recess is then formed groove-like, which makes the control disc breakproof maintains.
  • the recess could also be the entire thickness of the Push the control disc through, using the key instead of the heels a continuous batch of material could be provided.
  • the functionality of the safety switch is preferably thereby promoted that the means for fixing symmetrically on both sides of the Control disc are provided.
  • Safety switch has the switch housing 1 in the in the drawing head part shown in the longitudinal direction of the switch housing 1st extending first key channel 3. Furthermore, in the head part of the Switch housing 1, a second key channel 5 is provided, which runs perpendicular to the first key channel 3. A key 7 is from outside insertable either in one of the two key channels 3 or 5.
  • a control disk 9 is rotatable in the head part of the switch housing 1 stored, the axis of rotation 11 both perpendicular to the first Key channel 3 and perpendicular to the second key channel 5. The control disk 9 projects into both key channels 3 and 5.
  • the control disc 9 each side has a radially outward, short groove 13.
  • the Key 7 is on the key channel 3 or 5 to be inserted End fork-shaped, being on the inside of the two ends In the end region of the key 7 a cross bar 7 'is provided in each case.
  • control disc 9 On the control disc 9 is a, not shown in the drawing, in Longitudinal direction of the switch housing sliding plunger. At the other The end of this plunger is also not shown in the switch housing 1 Switch provided. When inserting the key 7 caused rotation of the control disc 9 shifts the latter the plunger and thereby inevitably actuates the switch.
  • Each of the two the same formed material parts 15 has one with respect to the axis of rotation 11 radially opposite the groove 13, groove-like first recess 17 and two 90 ° offset, also groove-shaped Recesses 19 on.
  • the further recesses 19 are located the two pointed ends of the oval material section 15, while the first Recess 17 is provided on one long side.
  • Each locking member 21 has an elongated hole 23, which encloses the axis of rotation 11.
  • This direction of movement is at the intersection of the two Key channels 3 and 5 aligned and running along one of them Bisector, i.e. offset by 45 ° to the key channels.
  • the end of the Locking member 21 is designated 21 '.
  • the locking member 21 On the subject of this End facing away from the intersection is the locking member 21 by means of a spring, not shown in the drawing, on the switch housing 1 supported.
  • the locking member 21 On the side facing the control disc 9 the locking member 21 has a raised locking tooth 25, which positively in both the first recess 17 and the others Recesses 19 of the material section 15 of the control disk 9 engage can.
  • the possible intervention depth is in the case of the others Recesses 19 less than in the first recess 17. That on the Crossing point of the key channels 3 and 5 aligned end 21 'protrudes both in the first key channel 3 and in the second Key channel 5.
  • This end 21 'of the same time as an actuator acting locking member 21 is a ramp for the key 7th educated.
  • the locking member 21st is due to the spring force loading the locking member 21 the axis of rotation 11 at that end of the elongated hole 23 on the Crossing point is turned away.
  • the ratchet tooth 25 engages the recess 17 of the material section 15.
  • the key 7 If the key 7 is in one of the two key channels 3 or 5 introduced, the key 7 first hits against the one acting as a ramp End 21 'of the locking member 21 and thereby pushes the locking member 21 back against the spring force, that is from the Key channel 3 or 5 out. At the same time, the ratchet tooth 25 is released the first recess 17. When the key 7 is inserted further take its crossbars 7 ', which each engage in a groove 13, the control disc 9 with. At the same time, the material section 15 runs with her Circumference past the ratchet tooth 25. Because of the eccentricity of the Lot of material 15, the locking member 21 is further from the Key channel 3 or 5 pushed out as the key 7 can.
  • the safety switch according to the invention can be designed such that starting from the fixed position of the control slide, the key 7 can be further introduced into the key channel 3 or 5 in Art of a caster, the crossbars 7 'so leave the grooves 13 again.
  • a switch housing 101 is provided with a key channel 105.
  • a key channel 105 On longitudinally slotted fork-shaped key 107 is in the key channel 105 importable.
  • a control disk 109 which projects into the key channel 105, turns when inserting the key 107 because crossbars 107 ' of the key 107 engage in grooves 113 which on both sides of the Control disc 109 are provided.
  • About the axis of rotation 111 of the Control disk 109 around is a batch of material 115 on the control disk 109 integrally formed, which has a flank 117.
  • a locking member 121 is located next to each material section 115 provided which encloses the axis of rotation 111 with an elongated hole 123 and is only shown in Fig. 2A.
  • the locking member 121 is movable perpendicular to the key channel 105 and not by means of one illustrated spring supported.
  • One on the inside of the Locking member 121 provided locking tooth 125 lies on the flank 117 of the material section 115 as long as the key 107 is outside of the key channel 105 is located.
  • groove-like recesses 119 are provided, which are perpendicular to the radial Run direction and at one end on the circumference of the control disk 109 flow out. This edge area can when the control disc rotates 109 get into the key channel 105.
  • the key 107 When the key 107 is inserted into the key channel 105, pushes the tip of the key 107 the locking member 121 against the Spring force back, the locking tooth 125 detaching from the flank 117.
  • the crossbars 107 'of the key 107 take the control disk 109 so long with, until the crossbars 107 'are viewed behind in the direction of insertion the control disc 109 are.
  • the control disk 109 moves one 2A indicated plunger, which in turn actuates the switch.
  • the groove-like recesses 119 along the key channel 105 aligned as shown in Fig. 2C.
  • the key 107 can now be further introduced into the key channel 105 in the manner of a wake, provided on the inside of the key 107 Shoulders 127 engage in the groove-like recesses 119 and thus the Secure control disc 109.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Holding Or Fastening Of Disk On Rotational Shaft (AREA)
  • Air Bags (AREA)
  • Control Of Combustion (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Mechanisms For Operating Contacts (AREA)
EP99124187A 1996-11-30 1997-11-20 Interrupteur de sécurité Expired - Lifetime EP0982747B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19649717 1996-11-30
DE19649717A DE19649717A1 (de) 1996-11-30 1996-11-30 Sicherheitsschalter
EP97951250A EP0941549B1 (fr) 1996-11-30 1997-11-20 Interrupteur de securite

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP97951250.6 Division 1998-06-11

Publications (3)

Publication Number Publication Date
EP0982747A2 true EP0982747A2 (fr) 2000-03-01
EP0982747A3 EP0982747A3 (fr) 2000-11-22
EP0982747B1 EP0982747B1 (fr) 2003-01-22

Family

ID=7813252

Family Applications (3)

Application Number Title Priority Date Filing Date
EP99124187A Expired - Lifetime EP0982747B1 (fr) 1996-11-30 1997-11-20 Interrupteur de sécurité
EP97951250A Expired - Lifetime EP0941549B1 (fr) 1996-11-30 1997-11-20 Interrupteur de securite
EP00123046A Expired - Lifetime EP1077457B1 (fr) 1996-11-30 1997-11-20 Interrupteur de sécurité

Family Applications After (2)

Application Number Title Priority Date Filing Date
EP97951250A Expired - Lifetime EP0941549B1 (fr) 1996-11-30 1997-11-20 Interrupteur de securite
EP00123046A Expired - Lifetime EP1077457B1 (fr) 1996-11-30 1997-11-20 Interrupteur de sécurité

Country Status (6)

Country Link
US (1) US6084185A (fr)
EP (3) EP0982747B1 (fr)
JP (1) JP2001504981A (fr)
AT (3) ATE229691T1 (fr)
DE (4) DE19649717A1 (fr)
WO (1) WO1998025284A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1292975B1 (it) † 1997-04-11 1999-02-11 Pizzato Elettrica Srl Interruttore di sicurezza a chiave.
DE19859260C2 (de) * 1998-12-22 2001-03-01 Euchner Gmbh & Co Sicherheitsschalter zum Schalten einer elektrischen Verbindung in Abhängigkeit des Schließzustandes einer zu überwachenden Einrichtung
DE19917211C1 (de) 1999-04-16 2000-11-16 Euchner Gmbh & Co Vorrichtung zum Schalten einer Verbindung in Abhängigkeit des Zustandes einer zu überwachenden Einrichtung, insbesondere Sicherheitsschalter
GB0214205D0 (en) * 2002-06-19 2002-07-31 Eja Ltd Lockable switch mechanism
US7928330B2 (en) * 2006-09-29 2011-04-19 Rockwell Automation Limited Safety switch
TWM319773U (en) * 2007-03-08 2007-10-01 Healthstream Taiwan Inc Control mechanism for safe switch of exercise facilities
DE102011121235A1 (de) 2011-12-12 2013-06-13 Euchner Gmbh + Co. Kg Modul für einen Sicherheitsschalter, Sicherheitsschalter mit einem solchen Modul sowie Betätiger für einen solchen Sicherheitsschalter

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3100862C2 (de) * 1981-01-14 1984-02-09 K.A. Schmersal Gmbh & Co, 5600 Wuppertal Sicherheitsschalter
DE3209414A1 (de) * 1981-01-14 1983-09-22 K.A. Schmersal Gmbh & Co, 5600 Wuppertal Sicherheitsschalter fuer schutzabdeckungen u.dgl.
US4963706A (en) * 1989-01-12 1990-10-16 Eja Engineering Company Limited Safety switch assemblies
DE4039652C1 (en) * 1990-12-12 1992-03-05 Kloeckner-Moeller Gmbh, 5300 Bonn, De Detachable safety-interlock for electrical switch - has key guides chamfered to facilitate final engagement with coded cam
EP0620948B1 (fr) * 1992-06-02 1996-07-10 E.J.A. Engineering Plc Ensembles interrupteurs de protection
DE4303367C1 (de) * 1993-02-05 1994-02-24 Schmersal K A Gmbh & Co Sicherheitsschalter
DE4338910C1 (de) * 1993-11-15 1995-02-16 Bernstein Hans Spezialfabrik 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
GB9507933D0 (en) * 1995-04-19 1995-06-07 Eja Eng Plc Switch assemblies
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
DE29609012U1 (de) * 1996-05-20 1996-10-24 Hans Bernstein, Spezialfabrik für Schaltkontakte GmbH & Co, 32457 Porta Westfalica Sicherheitsschalter

Also Published As

Publication number Publication date
EP1077457A3 (fr) 2001-03-14
DE59703519D1 (de) 2001-06-13
ATE231649T1 (de) 2003-02-15
JP2001504981A (ja) 2001-04-10
US6084185A (en) 2000-07-04
EP0982747A3 (fr) 2000-11-22
WO1998025284A1 (fr) 1998-06-11
EP1077457A2 (fr) 2001-02-21
ATE229691T1 (de) 2002-12-15
EP1077457B1 (fr) 2002-12-11
DE59708969D1 (de) 2003-01-23
DE19649717A1 (de) 1998-06-04
EP0941549B1 (fr) 2001-05-09
ATE201115T1 (de) 2001-05-15
DE59709207D1 (de) 2003-02-27
EP0941549A1 (fr) 1999-09-15
EP0982747B1 (fr) 2003-01-22

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