EP3651173B1 - Ensemble de commutation à solution d'accrochage sécurisé pour dispositif d'arrêt d'urgence - Google Patents

Ensemble de commutation à solution d'accrochage sécurisé pour dispositif d'arrêt d'urgence Download PDF

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Publication number
EP3651173B1
EP3651173B1 EP19204028.5A EP19204028A EP3651173B1 EP 3651173 B1 EP3651173 B1 EP 3651173B1 EP 19204028 A EP19204028 A EP 19204028A EP 3651173 B1 EP3651173 B1 EP 3651173B1
Authority
EP
European Patent Office
Prior art keywords
contact
mobile
control
switching assembly
monitoring
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.)
Active
Application number
EP19204028.5A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3651173A1 (fr
Inventor
Patrice Thizon
Eric Perard
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 Industries SAS
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 Industries SAS filed Critical Schneider Electric Industries SAS
Publication of EP3651173A1 publication Critical patent/EP3651173A1/fr
Application granted granted Critical
Publication of EP3651173B1 publication Critical patent/EP3651173B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/022—Emergency operating parts, e.g. for stop-switch in dangerous conditions
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/0015—Means for testing or for inspecting contacts, e.g. wear indicator
    • 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
    • H01H13/68—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having two operating members, one for opening and one for closing the same set of contacts
    • 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
    • H01H13/12—Movable parts; Contacts mounted thereon
    • H01H13/20—Driving mechanisms
    • 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
    • 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
    • H01H13/12—Movable parts; Contacts mounted thereon
    • H01H13/14—Operating parts, e.g. push-button
    • 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
    • H01H13/50—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member
    • H01H13/503—Stacked switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/0253—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch two co-operating contacts actuated independently
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/16—Indicators for switching condition, e.g. "on" or "off"
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2235/00—Springs
    • H01H2235/01—Spiral spring

Definitions

  • the present invention relates to a switching assembly.
  • the invention relates more particularly to a switching assembly intended to be assembled on a control assembly to form a switching device of the emergency stop type.
  • an emergency stop device comprises a control assembly carrying an actuator and a switching assembly also called a contact block intended to be mounted at the rear of the control assembly.
  • the switching assembly comprises at least one main movable bridge supporting movable contacts actuated by the actuator relative to fixed contacts from a closed position to an open position to open an electrical circuit in the event of 'emergency.
  • the main contacts are therefore of the normally closed type.
  • the control assembly and the switching assembly are often mounted mechanically on either side of a wall.
  • the switching assembly is therefore invisible to the user. It is therefore impossible for the user to know at all times whether the control assembly is correctly mounted on the switching assembly. However, a release of one of the assemblies relative to the other no longer allows the device to function correctly. Since an emergency stop device is intended to perform a safety function, it is necessary for this device to function correctly. For this, it is therefore necessary to ensure that the switching assembly is properly hooked to the control assembly when the emergency stop device is made to operate.
  • the switching assembly uses two nested push-buttons and a movable support with two independent connection plates, each carrying a movable control contact intended to cooperate with a fixed contact of the switching assembly and a detection contact. It also comprises a movable bridge carrying two movable detection contacts intended to come into contact with the detection contacts of the connection plates to establish an electrical connection between the two connection plates when the operational coupling of the control and control assembly. the switching assembly is carried out.
  • EP-A-0089863 describes a switch assembly according to the preamble of claim 1.
  • the aim of the invention is to provide a new solution making it possible to ensure that the control assembly is correctly mounted on the switching assembly. This solution is simple to operate and is carried out in a limited space.
  • the first movable contact bridge is movable in translation along a control axis between a first closed position and a second open position and its first movable control contact is able to be in contact with the first fixed contact. in the first closed position and away from the first fixed contact in the second open position.
  • the second movable contact bridge is movable in translation along said control axis between a first open position and a second closed position and its first movable monitoring contact is able to be moved away from the second fixed contact in the first open position and to be in contact with the second fixed contact in the second closed position.
  • the second mobile monitoring contact and the second mobile control contact are arranged to be in contact when the first mobile contact bridge is in its first closed position and the second mobile contact bridge is in its second position. closing.
  • the first movable contact bridge is able to move in translation along said control axis in a first direction and, from its open position to its position. closing, the second movable contact bridge moves along said control axis, in a second direction which is opposite to said first direction.
  • the switching assembly comprises a first stopper produced on the body and arranged to cooperate with the first movable contact bridge in its first closed position, this first stopper being positioned off-center with respect to the axis. of median translation of the first movable contact bridge and away from its first movable control contact with respect to said axis.
  • the switching assembly comprises a second stopper made on the housing and arranged to cooperate with the second movable contact bridge in its first closed position, this second stopper being positioned off-center with respect to the axis of median translation of the second movable contact bridge (41) and away from its first movable monitoring contact (42a) with respect to said axis.
  • the first movable contact bridge is slidably mounted on the control pusher and the switching assembly comprises a first contact pressure spring arranged between the control pusher and the first movable contact bridge.
  • the switching assembly comprises a closing spring arranged between the body and the control button.
  • the second movable contact bridge is slidably mounted on the monitoring pusher and the switching assembly comprises a second contact pressure spring arranged between the monitoring pusher and the second movable contact bridge.
  • the switching assembly comprises an opening spring arranged between the body and the monitoring plunger.
  • the invention also relates to a switching device comprising a control assembly comprising an actuating member capable of assuming a rest position and an actuating position, said switching device comprising a switching assembly as defined above.
  • a device of the emergency stop type also called a mushroom head switch, comprises two separate assemblies 1, 2 formed of a control assembly, also designated as the first assembly 1, and of a switching assembly, designated also second set 2.
  • the first set 1 (visible on the figure 5 ) comprises an actuator 10 intended to be pressed in an emergency by the operator along a control axis (X) to open an electrical circuit.
  • the actuator 10 can thus take a rest position, in which it is not depressed, leaving the electric circuit closed, and an actuation position in which it is depressed to open the electric circuit.
  • the second assembly 2 is a contact block intended for controlling the electrical circuit. This is represented on the figures 1A to 5 annexed.
  • This second assembly 2 comprises a body or casing 20, for example of plastic material, comprising means 21a, 21b for fastening to the first assembly 1.
  • the second assembly 2 comprises a control switch making it possible to control the circuit. electrical according to the position of the actuator 10. It also comprises a monitoring switch making it possible to monitor that the second assembly 2 is properly hooked onto the first assembly 1 while keeping the electrical circuit open as long as the first assembly 1 is disconnected mechanically from the second set 2.
  • the second assembly 2 comprises a first contact terminal 22a and a second contact terminal 22b. It comprises a first fixed contact 23a electrically connected to its first terminal 22a and a second fixed contact 23b electrically connected to its second terminal 22b.
  • the two terminals are for example conventional screw terminals.
  • the control switch comprises a control button 30 which can be actuated in translation along the axis (X) and a first bridge 31 of movable contacts carrying a first set of two movable control contacts 32a, 32b, said bridge 31 being connected in connection. slide on the control pusher 30. It also comprises a contact pressure spring R1 mounted between a stop 33 of the pusher. control 30 and the first movable contact bridge 31. It also comprises a closing spring R2 mounted in a housing along the axis (X) between the control button 30 and the body 20 of the switching assembly 2. The closing spring R2 and the contact pressure spring R1 are of the helical type and have their axis oriented along the (X) axis.
  • the monitoring switch comprises a monitoring push-button 40 which can be actuated in translation along the axis (X) and a second bridge 41 of movable contacts carrying a second set of two movable contacts called monitoring 42a, 42b, said second bridge 41 of movable contacts being mounted in a sliding link on the monitoring button.
  • It comprises a contact pressure spring R3 mounted along the axis (X) between a stop 43 of the monitoring pusher 40 and the bridge 41 of movable contacts.
  • It also comprises an opening spring R4 mounted in a housing along the axis (X) between the monitoring button 40 and the body 20 of the switching assembly.
  • the contact pressure spring R3 and the opening spring R4 are of the helical type and have their axis oriented along the axis (X).
  • the first movable contact bridge 31 is movable in translation between a first closed position and a second open position. It carries a first movable control contact 32a arranged to cooperate with the first fixed contact 23a and a second movable control contact 32b.
  • the second movable contact bridge 41 is also movable in translation between a first open position and a second closed position. It carries a first mobile monitoring contact 42a arranged to cooperate with the second fixed contact 23b and a second mobile monitoring contact 42b.
  • the first bridge 31 of movable contacts and the second bridge 41 of movable contacts are made of metallic material and make it possible to make an electrical connection between their two movable contacts.
  • the solution of the invention has the particular feature that the second movable control contact 32b is arranged to cooperate with the second movable monitoring contact 42b.
  • the second movable control contact 32b and the second movable monitoring contact 42b are in contact, thus closing the electrical circuit.
  • the cooperation of the two movable contacts requires reverse actuation of the first bridge 31 of movable contacts and of the second bridge 41 of movable contacts.
  • the first movable contact bridge 31 moves along the axis (X) in one direction and, from its open position to its closed position, the second bridge 41 of movable contacts moves along the axis (X), but in the opposite direction.
  • the first fixed contact 23a and the second fixed contact 23b each have their contact face oriented in opposite directions to each cooperate respectively with the first movable control contact 32a and with the first movable monitoring contact 42a.
  • the second assembly 2 also comprises a first stop 34 produced on the body 20 and arranged to cooperate with the first bridge 31 of movable contacts.
  • This first stop 34 is positioned off-center with respect to the median translation axis of the first movable contact bridge 31 and opposite its first movable control contact 32a with respect to this axis, so as to maintain the bridge 31 in its axis when it is in the closed position and the second movable contact bridge 41 is then in the open position.
  • the second assembly 2 comprises a second stop 44 produced on the body 20 and arranged to cooperate with the second 41 movable contact bridge.
  • This second stop 44 makes it possible to block the second bridge 41 of movable contacts in translation when the latter comes into its closed position.
  • This second stop 44 is positioned off-center with respect to the median translation axis of the second movable contact bridge 41 and opposite its first movable monitoring contact 42a with respect to said axis, so as to maintain the bridge 41 in its axis when it is in the closed position and to avoid offsetting the contact established between the second mobile control contact 32b and the second mobile monitoring contact 42b.
  • the switching assembly 2 and the control assembly 1 are separated.
  • the control button 30 is in its closed position and the monitoring button 40 is in its open position.
  • the head of the monitoring pusher 40 is offset upwards relative to the head of the control pusher 30.
  • the first mobile monitoring contact 42a of the second mobile contact bridge 41 is therefore not connected to the second fixed contact 23b and its second mobile monitoring contact 42b is not connected to the second mobile control contact 32b of the first bridge 31 of mobile contacts.
  • the electrical circuit is therefore open.
  • the control pusher 30 bears against a stop 35 of the housing 20 and the first movable contact bridge 31 bears against the first stop 34 defined above, making it possible to biasing the contact pressure spring R1 arranged between the first movable contact bridge 31 and the control button 30.
  • the first stop 34 can be positioned on the housing to allow a slight rotation of the first movable contact bridge 31 in the clockwise direction .
  • the control assembly 1 (not shown) is hooked to the switching assembly 2.
  • the attachment causes the monitoring pusher 40 to translate from its open position to its closed position and forms a top upper stop for the monitoring pusher 40.
  • the first mobile monitoring contact 42a comes into contact with the second fixed contact 23b and the second mobile monitoring contact 42b comes into contact with the second mobile control contact 32b.
  • the opening spring R4 is thus biased in compression during the translation of the monitoring plunger 40.
  • the contact pressure spring R3 is also biased in compression, making it possible to apply a contact pressure of the first mobile monitoring contact 42a against the second fixed contact 23b and the second bridge 41 of movable contacts against the second stop 44.
  • a translation of the control pusher 30 also occurs, freeing it from its stop 35, this translation being absorbed by the closing spring R2.
  • the first movable contact bridge 31 remains in its closed position under the action of the contact pressure spring R1.
  • the second stop 44 is positioned to maintain sufficient contact pressure between the second movable monitoring contact 42b and the second movable control contact 32b when the two bridges 31, 41 are in the closed position.
  • each contact pressure spring R1, R3 at the level of these two movable contacts 32b, 42b makes it possible to compensate for the slight rotation of the first bridge 31 of movable contacts (slight rotation present in the absence of the control assembly - see above) and replace it in the axis.
  • the electrical circuit is therefore closed and the switching device formed by assembling the control assembly 1 on the switching assembly 2 is operational.
  • the actuator 10 that is to say the head of the emergency stop, is actuated. In the actuated position, the actuator 10 forms a lower upper stop for the two push buttons, The actuation of the head therefore causes both the translation of the control pusher 30 and the translation of the monitoring pusher 40.
  • the second movable contact bridge 41 being in the closed position and blocked in translation by the second stop 44, the latter cannot be translated.
  • the translation of the monitoring button 40 is therefore absorbed by the opening spring R4 and by the contact pressure spring R3.
  • the control pusher 30 drives, thanks to a stop 36 made on its rod, the translation of the first bridge 31 of movable contacts from its closed position to its open position.
  • the translation of the control pusher 30 is allowed by compression of the closing spring R2, causing the release of the contact pressure spring R1 and the rise of the first movable contact bridge 31 against said stop 36.
  • the first movable control contact 32a is then away from the first fixed contact 23a and the second movable control contact 32b is away from the second movable monitoring contact 42b, thus causing the opening of the electrical circuit.
  • This figure 5 illustrates the operation of the invention when the control assembly 1 is found to be poorly attached to the switching assembly 2.
  • the monitoring button 40 can thus be in an intermediate position located between its position corresponding to the control assembly 1 not hooked ( figures 2A to 2C ) and its position corresponding to the control assembly 1 hooked up in an operational manner ( figures 3A to 3C ).
  • this intermediate position the translation of the monitoring pusher 40 is allowed by compression of the opening spring R4 but it is insufficient to drive the second bridge 41 of movable contacts to its closed position.
  • the electrical circuit then remains open, as long as the mechanical attachment is not correctly carried out between the two assemblies, which makes it possible to guarantee a high level of safety.
  • the device In the event of complete ejection of the control assembly 1 with respect to the switching assembly, that is to say in the event of complete unhooking of the head, the device automatically returns to the first operating state described below. -above. In this situation, as the control assembly is no longer hooked to the switching assembly at all, the monitoring push-button 40 returns to its initial position, biased by the two springs R3 and R4.
  • the so-called main switching assembly may be provided with mechanical means capable of acting. on each adjacent switching assembly to ensure their operational mechanical latching. It is thus a matter of securing the attachment of at least one other switching assembly with the aid of the main switching assembly, the attachment of which is already monitored by virtue of the solution of the invention described above.
  • the main switching assembly 2 therefore makes it possible to secure the assembly of one or two auxiliary switching assemblies on the control assembly 1. For this, each auxiliary switching assembly must be positioned adjacent. to the main switching assembly 2. If the device has two auxiliary switching assemblies, these assemblies must be positioned on either side of the main switching assembly 2.
  • These mechanical securing means may include a projecting part made on the housing 20 of the assembly and cooperating with a rear face of the adjacent auxiliary switching assembly when the main switching assembly 2 is mechanically hooked onto the control assembly 1.
  • This protruding part may consist of a fin 220 made perpendicular to the main axis. It is visible in the accompanying figures.

Landscapes

  • Push-Button Switches (AREA)
  • Electrostatic Spraying Apparatus (AREA)
  • Mechanisms For Operating Contacts (AREA)
EP19204028.5A 2018-11-07 2019-10-18 Ensemble de commutation à solution d'accrochage sécurisé pour dispositif d'arrêt d'urgence Active EP3651173B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1860252A FR3088135B1 (fr) 2018-11-07 2018-11-07 Ensemble de commutation a solution d'accrochage securise pour dispositif d'arret d'urgence

Publications (2)

Publication Number Publication Date
EP3651173A1 EP3651173A1 (fr) 2020-05-13
EP3651173B1 true EP3651173B1 (fr) 2020-11-25

Family

ID=65685680

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19204028.5A Active EP3651173B1 (fr) 2018-11-07 2019-10-18 Ensemble de commutation à solution d'accrochage sécurisé pour dispositif d'arrêt d'urgence

Country Status (5)

Country Link
US (1) US11101084B2 (pt)
EP (1) EP3651173B1 (pt)
CN (1) CN111161963B (pt)
BR (1) BR102019022381B1 (pt)
FR (1) FR3088135B1 (pt)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114975009A (zh) * 2021-02-26 2022-08-30 霍尼韦尔国际公司 具有冗余接触垫的开关部件

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US4284864A (en) * 1979-01-26 1981-08-18 Emerson Electric Co. Low actuating force switch
FR2523688A1 (fr) * 1982-03-19 1983-09-23 Telemecanique Electrique Dispositif d'arret d'urgence
JPS6299130U (pt) * 1985-12-13 1987-06-24
DE4101493C2 (de) 1991-01-19 2001-07-19 Schlegel Georg Gmbh & Co Elektrischer Schalter mit einer Kontaktvorrichtung und einem Stößel
US6028274A (en) * 1998-02-10 2000-02-22 Harris; Timothy S. Fail-safe switch
US6198058B1 (en) 1999-09-27 2001-03-06 Rockwell Technologies, Llc Switch contact mechanism
TW476081B (en) * 1999-12-17 2002-02-11 H O Vuolas Oy Non-locking switch
ATE405940T1 (de) * 2005-12-20 2008-09-15 Siemens Ag Vorrichtung mit einer steueranordnung und einem schaltgerät
US7525054B2 (en) * 2006-07-03 2009-04-28 Swann Industries Pte Ltd. Interlock door switch
DE102007047293A1 (de) * 2007-10-02 2009-04-09 Georg Schlegel Gmbh & Co. Kg Schalter mit zwei über Koppelmittel miteinander in Verbindung stehenden Kontakteinrichtungen
DE102007056191A1 (de) * 2007-11-21 2009-05-28 Rafi Gmbh & Co. Kg Not-Aus-Schaltvorrichtung
FR2936902B1 (fr) * 2008-10-07 2010-09-17 Schneider Electric Ind Sas Dispositif d'arret d'urgence
FR2950472B1 (fr) * 2009-09-21 2011-08-26 Schneider Electric Ind Sas Dispositif d'arret d'urgence
FR2959590B1 (fr) * 2010-04-29 2012-04-20 Schneider Electric Ind Sas Dispositif d'arret d'urgence
FR2959591B1 (fr) * 2010-04-29 2012-04-20 Schneider Electric Ind Sas Dispositif d'arret d'urgence avec ensembles de commutation a assemblage securise
FR2979747B1 (fr) * 2011-09-07 2014-05-23 Schneider Electric Ind Sas Dispositif d'arret d'urgence adaptable sur un systeme de dialogue homme-machine
US9115848B1 (en) * 2012-07-03 2015-08-25 Wesco Distribution, Inc. Emergency safety switch
DE202017006762U1 (de) * 2017-04-28 2018-04-27 Epcos Ag Relais

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None *

Also Published As

Publication number Publication date
BR102019022381A2 (pt) 2020-05-26
CN111161963A (zh) 2020-05-15
BR102019022381B1 (pt) 2022-10-25
US20200144005A1 (en) 2020-05-07
FR3088135A1 (fr) 2020-05-08
US11101084B2 (en) 2021-08-24
EP3651173A1 (fr) 2020-05-13
CN111161963B (zh) 2024-04-05
FR3088135B1 (fr) 2020-10-09
BR102019022381A8 (pt) 2022-07-26

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