EP3809435A1 - Dispositif de verrouillage de disjoncteur - Google Patents

Dispositif de verrouillage de disjoncteur Download PDF

Info

Publication number
EP3809435A1
EP3809435A1 EP20200892.6A EP20200892A EP3809435A1 EP 3809435 A1 EP3809435 A1 EP 3809435A1 EP 20200892 A EP20200892 A EP 20200892A EP 3809435 A1 EP3809435 A1 EP 3809435A1
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
housing
adjusting element
housing parts
locking
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
EP20200892.6A
Other languages
German (de)
English (en)
Other versions
EP3809435C0 (fr
EP3809435B1 (fr
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.)
ABUS August Bremicker Soehne KG
Original Assignee
ABUS August Bremicker Soehne 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 ABUS August Bremicker Soehne KG filed Critical ABUS August Bremicker Soehne KG
Publication of EP3809435A1 publication Critical patent/EP3809435A1/fr
Application granted granted Critical
Publication of EP3809435C0 publication Critical patent/EP3809435C0/fr
Publication of EP3809435B1 publication Critical patent/EP3809435B1/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
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • 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
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H01H9/28—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member
    • H01H9/281—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member making use of a padlock
    • H01H9/282—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member making use of a padlock and a separate part mounted or mountable on the switch assembly and movable between an unlocking position and a locking position where it can be secured by the padlock
    • H01H9/283—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member making use of a padlock and a separate part mounted or mountable on the switch assembly and movable between an unlocking position and a locking position where it can be secured by the padlock the part being removable
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/025—Constructional details of housings or casings not concerning the mounting or assembly of the different internal parts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • 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
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H01H9/28—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member
    • H01H9/287—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member wherein the operating part is made inaccessible or more difficult to access by a lid, cover or guard, e.g. lockable covers

Definitions

  • the present invention relates to a circuit breaker blocking device, in particular a motor protection switch blocking device.
  • Motor protection switches are provided to protect electric motors from overload, failure of external conductors and / or short circuits, so that damage, in particular overheating, of the respective protected devices can be prevented. In addition, they are used to switch the motor on and off during maintenance.
  • a motor protection switch has a rotary or push button as a handle with which the motor protection switch can be switched on and off manually, i.e. by hand. After a trip, the motor protection switch must be switched on again manually. In principle, however, a motor protection switch should only be switched on again when the cause of its switch-off is known and eliminated. Otherwise, restarting the device can lead to property damage and / or personal injury.
  • the invention is therefore based on the object of creating a circuit breaker locking device with which the handle of a circuit breaker, in particular the handle of a motor circuit breaker, for example in the case of maintenance, can be secured against being switched on again by unauthorized third parties.
  • circuit breaker locking device with the features of claim 1, and in particular by a circuit breaker locking device, in particular a motor protection switch locking device, comprising two half-shell-shaped assemblies to form a housing shell with a rear wall Housing parts, in particular housing halves, which are connected to one another via a swivel joint which defines a pivot axis about which the two housing parts can be pivoted relative to one another between a release position and a clamping position, in particular limited, in particular limited in both directions.
  • the circuit breaker blocking device further comprises an adjustment element which is adjustable, in particular rotatable about an axis of rotation, between a basic position and a locking position, in particular limited, in particular limited in the direction of the locking position, in order to transfer the two housing parts from the release position to the clamping position.
  • the housing shell comprises two housing parts which are connected to one another via a swivel joint, so that the housing shell can assume a release position and a clamping position.
  • the housing shell In the release position, the housing shell can be placed on a housing of a motor protection switch in order to cover the handle of a motor protection switch.
  • the housing shell can then be transferred in the direction of the clamping position by pivoting the two housing parts relative to one another and thus clamped on the housing of the motor protection switch.
  • the pivoting of the two housing parts relative to one another takes place by moving an adjusting element into a locking position.
  • the locking device according to the invention can, however, also be suitable for circuit breakers other than motor circuit breakers.
  • the two housing parts can each have a clamping jaw, in particular on their side facing away from the swivel joint, which are moved towards each other when the two housing parts are moved into the clamping position in order to clamp the circuit breaker locking device to a housing of a circuit breaker, in particular a motor circuit breaker.
  • the two clamping jaws can each be provided with a self-adhesive friction lining or anti-slip lining in order to increase the effectiveness of the clamping of the locking device on a housing of a circuit breaker.
  • a locking device can be provided in order to fix the adjusting element in the locking position by means of a locking element, in particular a padlock, in order to secure the adjusting element against being moved into the basic position.
  • a locking device can be provided, which by means of a locking element, in particular a padlock, the adjustment element in the locking position and thus the housing shell in the clamping position and thus the circuit breaker locking device the housing of the motor protection switch.
  • the circuit breaker locking device according to the invention can thus prevent unauthorized access to a handle of a motor circuit breaker.
  • the locking device can be referred to in English as a "lockout" device.
  • the adjustment element can have a drive section which engages the two housing parts.
  • the two housing parts can then be transferred from the release position into the clamping position by the drive section of the adjusting element.
  • the drive section comprises a circular or oval, in particular elliptical or eccentric, in particular circumferential, control cam with two opposing flat areas and two opposing end areas.
  • the two end regions are preferably oriented in the direction of the pivot axis of the rotary joint.
  • the adjustment element is preferably rotatably supported by means of the drive section, in particular the control cam of the drive section, in a recess formed in the rear wall of the housing shell, in particular in an opposing manner, the recess being proportionately in one housing part and proportionately in the other housing part is trained.
  • the drive section has a web, in particular a circumferential web, on both sides of the control cam, the adjusting element being held on the rear wall in the axial direction by the two webs.
  • the angle difference between the basic position and the locking position of the adjusting element can, for example, be in a range between 60 ° and 120 °, in particular between 80 ° and 100 °, in particular 90 °.
  • the rotary movement of the adjusting element in the locking position can be limited by a stop.
  • the adjusting element preferably comprises a manually operable rotary handle, in particular arranged on an outside of the rear wall, which is at least non-rotatably, in particular fixedly, connected to the drive section in order to adjust the adjusting element between the basic position and the locking position.
  • the rotary handle can be designed as a wing handle, in particular with two wings protruding radially from the axis of rotation in opposite directions. Such an adjusting element is easily accessible and easily rotatable.
  • a, in particular a respective, stop for the rotary handle, in particular for one, in particular a respective one of the two wings of the wing handle, in the locking position of the adjusting element can be provided.
  • the locking device can include that at least one of the two stops, in particular both stops, has a respective eyelet, in particular have, and that one of the two wings has an eyelet, the eyelet of the wing and the eyelet of the associated stop in the Locking positions are aligned with one another so that a locking element can be passed through.
  • the other wing can also have an eyelet. In this way, the setting of the adjustment element in the locking position and thus the two housing parts in the clamping position can be achieved in a simple manner, which is intuitively accessible to the user.
  • the locking device has two eyelets which are aligned with one another in the locking position of the adjusting element, so that a locking element can be passed through, whereby the rotary handle of the adjusting element is fixed on the stop.
  • one eyelet is formed on the rotary handle and the other eyelet is formed on the blocking element explained below.
  • the adjusting element can comprise a blocking element, in particular a slide.
  • the blocking element is in particular adjustable, in particular displaceable, held on the rotary handle between an initial position and a blocking position, the blocking element in its blocking position blocking an adjustment of the adjustment element in the locking position into the basic position.
  • the swivel joint preferably comprises that the housing shell has a swivel connection on each of two mutually opposite side walls.
  • the respective rotary connection preferably comprises an opening in the one housing part and a pin, in particular expanding pin, formed on the other housing part and engaging, in particular latching, in the opening.
  • a housing shell with such rotary connections is particularly easy to assemble from the two housing parts.
  • the two housing parts can each have an opening and a pin. It is preferably provided that for the respective rotary connection one housing part is designed to be resilient in the area of the opening and / or the other housing part in the area of the pin in order to enable the two housing parts to be easily assembled.
  • the two housing parts are of identical design.
  • the two housing parts are then housing halves.
  • the two housing parts can, however, also be designed differently from one another, in particular of different sizes.
  • the two housing parts can each be designed as a plastic injection-molded part and / or in one piece, so that the two housing parts can be manufactured particularly easily.
  • more complex shapes can easily be produced with an injection molding process.
  • the two housing parts can, for example, be pivotable relative to one another by an angle of less than 10 °, in particular in a range between 2 ° and 8 °. It is therefore sufficient if the clamping position differs from the release position by only a few angular degrees in order to achieve effective clamping of the locking device on a housing of a circuit breaker.
  • the pivoting movement of the two housing parts relative to one another in the release position by abutting a rear wall section of the one housing part against a rear wall section of the other housing part and / or in the clamping position by abutting at least one side wall section of the one housing part against a respective side wall section of the other housing part is limited.
  • a standard motor protection switch 11 is shown with a housing 13 and a rotary switch 15 that can be switched between an OFF and an ON position.
  • a motor protection switch locking device 17 can be attached to the housing 13 of the motor protection switch 11 and then secured against being removed from the housing 13 by means of a padlock 19 in order to prevent the rotary switch 15 from being actuated (cf. Figure 1B ). This is particularly necessary if a manual restart of a previously triggered motor protection switch 11 by any third party is to be prevented.
  • the motor protection switch locking device 17 comprises two half-shell-shaped housing parts 21, in particular housing halves, which are assembled to form a housing shell 23 with a rear wall 25, two opposing side walls 27 and two opposing end walls 29 (see also Fig. 2 ).
  • the two housing parts 21 are in the embodiment according to Figs. 1 to 3 designed identically, but can also be designed in different ways, in particular of different sizes.
  • the two housing parts 21 are each produced by a plastic injection molding process and are therefore formed in one piece.
  • the two housing parts 21 each have a protruding clamping jaw 41, via which the motor protection switch locking device 17 can be clamped to the housing 13 of the motor protection switch 11 and thus fastened.
  • the two housing parts 21 are connected to one another via a swivel joint 31.
  • the swivel joint 31 defines a pivot axis S in order to pivot the two housing parts 21 relative to one another.
  • the rotary joint 31 has a rotary joint 33 on each of the two side walls 27 of the housing shell 23.
  • the two housing parts 21 each have an opening 35 on one side wall 27 and a pin 37 on the other side wall 27.
  • the pin 37 of one housing part 21 engages in the opening 35 of the other housing part 21 and vice versa, whereby the two rotary connections 33 and thus the rotary joint 31 are formed. Since the pins 37 are designed as expanding pins, they snap into the openings 35.
  • the side walls 27 are designed to be resilient at least in the area of the openings 35 and / or the pins 37.
  • the motor protection switch locking device 17 comprises an adjusting element 39, which can be moved between a basic position, which is shown in FIG Figure 1A is shown, and a locking position shown in Figure 1B is shown, is rotatable about an axis of rotation D.
  • the basic position and the locking position are offset from one another by at least substantially 90 °.
  • Rotating the adjusting element 39 from the basic position into the locking position causes the two housing parts 21 to move out of a release position shown in FIG Figure 1A is shown, about the pivot axis S, in particular slightly, tilted against each other and thereby in a clamping position, which is shown in FIG Figure 1B is shown, transferred, whereby the two clamping jaws 41, which are each arranged at the free end of the respective housing part 21, are moved towards each other in order to clamp the housing 13 of the motor protection switch 11 between them and thus the motor protection switch locking device 17 on the housing 13 of the motor protection switch 11 to be attached.
  • the two clamping jaws 41 are each provided with a strip-shaped friction lining 43 on their mutually facing sides.
  • the two housing parts 21 are limited to pivotability relative to one another by an angle of a few degrees, for example in a range between 2 ° and 8 °.
  • the limitation is achieved in that in the release position a rear wall section of one housing part 21 abuts a rear wall section of the other housing part 21 and in the clamping position a respective side wall section of one housing part 21 abuts a respective side wall section of the other housing part 21.
  • the adjustment element 39 comprises a drive section 45 with a circumferential control cam 47, which is oval, in particular eccentric, and has two opposing flat areas 49 and two opposing end areas 51 (cf. in particular the Figures 3A and 3B ).
  • the adjusting element 39 is rotatably supported via the drive section 45, in particular the control cam 47 of the drive section 45, in a recess 53 formed in the rear wall 25 of the housing shell 23, which is formed in a counter-shape to the drive section 45.
  • the recess 53 is formed half in one housing part 21 and half in the other housing part 21.
  • the drive section 45 engages the two housing parts 21 in such a way that when the adjusting element 39 is rotated from the basic position into the locking position, the two end areas 51 of the drive section 45 press the two housing parts 21 apart on the rear wall 25, so that the two housing parts 21 are driven into the clamping position for the aforementioned pivoting movement about the pivot axis S of the rotary joint 31.
  • a circumferential web 55 is provided on both sides of the control cam 47.
  • the adjusting element 39 comprises a manually operated rotary handle 57 which is permanently connected to the drive section 45 and which, when the motor protection switch locking device 17 is assembled, is arranged on an outside of the rear wall 25 and as a wing handle with two vanes 59 projecting radially from the axis of rotation D in opposite directions are formed.
  • one of the two wings 59 of the rotary handle 57 has an eyelet 61.
  • a stop 63 protrudes from the rear wall 25 of the housing shell 23 on the two housing parts 21, the two stops 63 each also being provided with an eyelet 65.
  • a wing 59 of the rotary handle 57 abuts a respective one of the two stops 63, the eyelet 61 of one wing 59 with the eyelet 65 of the stop 63 and the wing 59 with the eyelet 61 in the locking position strikes, is aligned, so that a bracket of a padlock can be passed through the pair of eyelets 61, 65 formed in this way, so that the adjusting element 39 can be fixed in the locking position.
  • the one wing 59, the eyelet 61, the one stop 63 and the associated eyelet 65 thereby form a locking device 67 according to the invention or are at least a part thereof.
  • FIG. 4 and 5 a further embodiment of a motor protection switch locking device is shown, in comparison with the first embodiment according to FIGS Figs. 1 to 3 Identical or identically acting features are denoted by the same reference numerals, and the differences from the first embodiment will primarily be discussed below, which essentially lie in the design of the adjusting element 39 and the stop 63 of the lower housing part 21 in the figures.
  • the adjusting element 39 of the embodiment according to FIGS Fig. 4 and 5 has a drive section 45 and a manually operated rotary handle 57, connected to the drive section 45, with a wing 59 with an eyelet 61, which connects the drive section 45 and the rotary handle 57 with the wing 59 with the eyelet 61 of the embodiment according to FIGS Figs. 1 to 3 correspond.
  • the adjusting element 39 has a blocking element 69 which is inserted into a longitudinal opening 71 formed in the rotary handle 57.
  • the blocking element 69 is clipped onto the rotary handle 57 via two spring-elastic latching projections 73 which engage behind the longitudinal opening 71.
  • an eyelet 65 is formed in the blocking element 69.
  • the stop 63 of the lower housing part 21 - in contrast to the embodiment according to FIG Figs. 1 to 3 - no eyelet open.
  • the blocking element 69 is along the longitudinal extension of the longitudinal opening 71 between a starting position (not shown) and a position in FIG Fig. 4 Locking position shown can be displaced. In the starting position, the blocking element 69 is displaced upwards in relation to the blocking position shown, so that the adjusting element 39 is easily moved out of its position into the Fig. 4 and 5
  • the locking position shown can be turned back into the basic position. If, however, the blocking element 69 is in its blocking position according to FIG Fig. 4 , a turning back of the adjusting element 39 from the locking position in the direction of the basic position is prevented by the blocking element 69.
  • the eyelet 65 of the blocking element 69 is aligned with the eyelet 61 of the rotary handle 57, so that the eyelet pair 61, 65 thus formed - analogously to the eyelet pair of the embodiment according to FIGS Figs. 1 to 3 - A padlock can be passed through in order to fix the adjusting element 39 in the locking position.
  • the wing 59, the eyelet 61, the stop 63 and the eyelet 65 in turn form a locking device 67 according to the invention or are at least a part of it.

Landscapes

  • Switch Cases, Indication, And Locking (AREA)
EP20200892.6A 2019-10-14 2020-10-08 Dispositif de verrouillage de disjoncteur Active EP3809435B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019127618.7A DE102019127618A1 (de) 2019-10-14 2019-10-14 Schutzschalter-Sperrvorrichtung

Publications (3)

Publication Number Publication Date
EP3809435A1 true EP3809435A1 (fr) 2021-04-21
EP3809435C0 EP3809435C0 (fr) 2023-09-13
EP3809435B1 EP3809435B1 (fr) 2023-09-13

Family

ID=72811760

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20200892.6A Active EP3809435B1 (fr) 2019-10-14 2020-10-08 Dispositif de verrouillage de disjoncteur

Country Status (3)

Country Link
US (1) US11456125B2 (fr)
EP (1) EP3809435B1 (fr)
DE (1) DE102019127618A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD914618S1 (en) * 2019-08-13 2021-03-30 Master Lock Company Llc Switch lockout device
USD994623S1 (en) * 2019-10-11 2023-08-08 North American Substation Services, Llc Switch cover
USD989719S1 (en) * 2021-09-25 2023-06-20 Mercury Systems, Inc. Toggle switch guard
CN114901008B (zh) * 2022-05-05 2023-05-12 安徽汇齐金建设工程有限公司 一种带有保护外壳的网络安全入侵监测设备

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4677261A (en) * 1984-08-16 1987-06-30 La Telemecanique Electrique Device for locking the control member of an electrical appliance of the manual control type
DE19917859A1 (de) * 1999-04-20 2000-10-26 Siemens Ag Sperrvorrichtung für Schaltgeräte
DE102008028049B3 (de) * 2008-06-12 2009-08-13 Wöhner GmbH & Co. KG Elektrotechnische Systeme Schaltgerät

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Publication number Priority date Publication date Assignee Title
US5310969A (en) * 1992-04-21 1994-05-10 Prinzing Enterprises, Inc. Switch lockouts
US6365851B1 (en) * 2001-04-30 2002-04-02 Airpax Corporation, L.L.C. Electrical switch extraction handle with lockout
US7355132B1 (en) * 2006-09-21 2008-04-08 Square D Company Side-mounted lock-off accessory for a circuit breaker
GB2486870A (en) * 2010-03-31 2012-07-04 Alba Innovations Ltd Temporary isolation barrier for an electrical switch
EP2463875A1 (fr) * 2010-12-13 2012-06-13 Eaton Industries GmbH Entraînement rotatif actionné manuellement verrouillable pour commutateurs électriques
US8796568B2 (en) * 2010-12-29 2014-08-05 General Electric Company Switching assembly having an interlock device for a selector switch
US8629359B2 (en) * 2011-02-16 2014-01-14 Panduit Corp. Circuit breaker lockout
US8748759B2 (en) * 2011-08-12 2014-06-10 Panduit Corp. Circuit breaker lockout
US8899636B2 (en) * 2011-12-22 2014-12-02 Eaton Corporation Magnetic latch
US9208964B2 (en) * 2012-12-14 2015-12-08 Master Lock Company Llc Lockout device
US10354812B1 (en) * 2018-01-17 2019-07-16 Brady Worldwide, Inc. Circuit breaker lockout device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4677261A (en) * 1984-08-16 1987-06-30 La Telemecanique Electrique Device for locking the control member of an electrical appliance of the manual control type
DE19917859A1 (de) * 1999-04-20 2000-10-26 Siemens Ag Sperrvorrichtung für Schaltgeräte
DE102008028049B3 (de) * 2008-06-12 2009-08-13 Wöhner GmbH & Co. KG Elektrotechnische Systeme Schaltgerät

Also Published As

Publication number Publication date
EP3809435C0 (fr) 2023-09-13
DE102019127618A1 (de) 2021-04-15
EP3809435B1 (fr) 2023-09-13
US20210110982A1 (en) 2021-04-15
US11456125B2 (en) 2022-09-27

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