EP3246932A1 - Dispositif de protection comprenant un fusible et procédé de surveillance électrique et de signalisation du déclenchement d'un dispositif de protection, en particulier d'un fusible - Google Patents

Dispositif de protection comprenant un fusible et procédé de surveillance électrique et de signalisation du déclenchement d'un dispositif de protection, en particulier d'un fusible Download PDF

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Publication number
EP3246932A1
EP3246932A1 EP17167918.6A EP17167918A EP3246932A1 EP 3246932 A1 EP3246932 A1 EP 3246932A1 EP 17167918 A EP17167918 A EP 17167918A EP 3246932 A1 EP3246932 A1 EP 3246932A1
Authority
EP
European Patent Office
Prior art keywords
release
spring
released
fuse
switching state
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
EP17167918.6A
Other languages
German (de)
English (en)
Other versions
EP3246932B1 (fr
Inventor
Franz Ness
Jörg Hußmann
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.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP3246932A1 publication Critical patent/EP3246932A1/fr
Application granted granted Critical
Publication of EP3246932B1 publication Critical patent/EP3246932B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02Details
    • H01H85/30Means for indicating condition of fuse structurally associated with the fuse
    • H01H85/303Movable indicating elements
    • H01H85/306Movable indicating elements acting on an auxiliary switch or contact
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10Operating or release mechanisms
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10Operating or release mechanisms
    • H01H71/12Automatic release mechanisms with or without manual release
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/10Adaptation for built-in fuses
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00Thermally-actuated switches
    • H01H37/74Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
    • H01H37/76Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material

Definitions

  • the invention relates to a protective device with a fuse and a method for electrical monitoring and signaling the triggering of a protective device, in particular a fuse, according to the preambles of claims 1 and 7.
  • Protective devices with a fuse in the form of a fuse which have a hollow insulating body, are arranged on the opposing and connected by a fusible electrical contacts, are known.
  • a reporting element is led out of the insulating body.
  • the signaling element in the form of a metal hook pulls a reporting spring against the insulating body, so that it is held biased.
  • the message spring is released from the reporting element and the reporting spring strikes a stop element (stop surface).
  • the stop element is arranged at one end of a double lever, which is pivotable about an axis. The pivoting of the double lever by the message spring causes the operation of an auxiliary switch, thereby changing its switching state.
  • the auxiliary switch is thus either open or closed, one of these two switching states signaling the triggering of the fuse.
  • Electronic fuse monitors have the disadvantage that they reduce the surge voltage resistance of the protective device and are also more expensive.
  • the object of the invention is to achieve a protective device with a mechanical fuse monitoring, which has a high reliability. Furthermore, a method for electrical monitoring and signaling the triggering of a protective device, in particular a fuse, proposed.
  • the object is based on the protective device by the features of claim 1 and based on the method by the features of claim 7.
  • the solution provides with respect to the protective device that a release device is provided, on which the stop element (the stop surface) is arranged and which is movable (after striking) of the striking signal spring from a holding position to a release position, wherein the release device is a release spring which is held under a second bias when the release is in its holding position and which is released when the release is in its release position, and that there is an (auxiliary) switch which is of the in its holding position located release device is held in a first switching state and is switched to a second switching state when the release device is in its release position, wherein the second switching state signals each of the molten fuse element.
  • a technically simple embodiment of the release device is obtained when the release device is a pivoting element which is pivotable about an axis of a pivot bearing and at the distance to the pivot bearing a stop element (the stop surface) and a release element are arranged at a distance from the stop element, that the pivoting element from the stop spring abutting the stop spring from a first position to a second position is pivotable, that the release spring is held by the pivot member under a second bias when the pivot member is in its first position, and is released from the pivot member when the pivot member is in its second position, that the release element of the released release spring from a slidable holding position in a releasing position, that the (auxiliary) switch is held by the release member in its holding position in a first switching state and in a second switching state, when the release member is moved to its releasing position.
  • the pivoting element is a pivotable hook with a hook shank, at one end (of the hook shaft), the pivot bearing and at the other opposite end (the hook shank) is formed a bent hook portion, wherein at the free end of the bent hook portion the stop element (the stop surface) and spaced therefrom at the end of the hook shaft, a cam are arranged, which is supported at a befindlichem in its first position pivoting member on a support member.
  • a simple restoration of the signaling function is obtained when the release element for biasing the released release spring from its released position is displaceable to its holding position that corresponding to the displacement of the release element from its released to its holding position, a displacement of a return element from a rest position in one Reset position takes place, which pivots the pivoting element in its first position (resets).
  • the protective device is designed so that after the return of the pivoting element, a displacement of the return element takes place in its rest position.
  • the solution provides, in relation to the method, that a release spring held by the release device in its holding position is released by moving the release device into its release position, that an (auxiliary) switch is released from the release device in its holding position from a release spring the first switching state is switched to a second switching state when the release device is in its release position, wherein the second switching state signals each of the molten fuse element.
  • Fig. 1 shows a protective device 1 with a fuse 2 and a monitoring and signaling unit 3 for monitoring and signaling the triggering of the fuse 2.
  • the monitoring and signaling unit 3 has a housing 3a, which is mounted on the fuse 2 and in Fig. 1 is shown open, and it has been split into two halves for clarity and the front half has been omitted in the figures respectively (in all figures so that only the rear half of the housing 3a can be seen).
  • the fuse 2 has a hollow insulating body 2a and two opposing electrical contacts in the form of blade contacts 4.
  • the two blade contacts 4 are connected inside the insulating body 2a by a fusible conductor (not shown).
  • a reporting element 5 is led out, which is bent hook-shaped down and holds a message spring 6 in the form of a leaf spring under a (first) bias. If the melt conductor melts, the message spring 6 is released.
  • the monitoring and signaling unit 3 a release device 7, which has a stop element 8 in the form of a stop surface 8a, where the reporting spring 6 abuts when it is released from the reporting element 5 (see also Fig. 6 ).
  • the release device 7 is in Fig. 1 shown in its holding position in which a release spring 9 is held under a bias.
  • a release spring 9 By means of the release spring 9, an auxiliary switch 10 via a switch button 10a can be actuated.
  • Fig. 1 holds the release device 7, the switch button 10 a pressed and the auxiliary switch 10 is in its first switching state.
  • FIG. 2 is the monitoring and signaling unit 7 according to Fig. 1 shown in an enlarged view, so that their details are better to see.
  • the monitoring and signaling unit 7 has a pivoting element 11 in the form of a hook 11a, which is pivotally mounted via a pivot bearing 12 from a first position to a second position.
  • the Swivel bearing 12 is arranged at the bottom of a release element 13.
  • the hook 11a consists of a hook shank 11b whose upper end is connected to the pivot bearing 12 and at the lower end of which a cam 11e and a hook portion 11c are respectively arranged on both sides.
  • the cam 11e on the rear side is hidden by the hook 11a, and only the front cam 11e is seen.
  • the stop element 8 is fixed.
  • the upwardly displaceable together with the hook-shaped pivoting element 11 release element 13 is acted upon by a release spring 14 in the form of a (first) coil spring, which rests on the lower side of a radial projection 15 and one based on Fig. 2 upward force exerts on the release element 13.
  • the release element 13 is held in place by the hook 11a in that the rear and front cams 11e each have a support element 11d in the form of a projection with a contact surface (see FIG. Fig. 5 ) engages behind and thus holds on the support elements 11d (is supported).
  • the two cam 11e engaging behind the supporting elements 11d are latched to the support element 11d (not shown).
  • release spring 14 is held by the located in its first position pivot member 11 under a (second) bias.
  • the release element 13 is in its holding position and the release device 7 accordingly in its holding position.
  • the radial projection 15 is further supported by a return spring 16 in the form of a (second) coil spring, which abuts the top of the projection 15 and presses against a push-button 17.
  • the push-button 17 is provided with a lateral passage opening 18 into which engages a projection 15 arranged on the radial nose 19, which limits the stroke of the push-button 17.
  • the return spring 16 is relaxed and pushed the push button 17 upwards.
  • Fig. 3 shows the monitoring and signaling unit 7 for better understanding as opposed to Fig. 2 only without the push-button 17. As in Fig. 2 Therefore, the switch button 10a is shown pressed down.
  • Fig. 5 is opposite Fig. 4
  • the hook 11 a is omitted, so that the rear of the two support members 11 d can be seen that in this position of the release element 13 (as in Fig. 1 - 4th ) is engaged behind by the rear cam 11e.
  • the front of the two support members 11d is located in the omitted front half of the housing 3a and is engaged behind by the front cam 11e.
  • Fig. 6 shows the release device 7 according to Fig. 2 with released from the reporting element 5 and posted on the stop element 8 signaling spring 6 and the right of this (counterclockwise) swiveled pivot member 11.
  • the pivot member 11 has released the release spring 14 (straight), but still is tense.
  • the release element 13 is still in its lower (holding) position.
  • Fig. 7 the release element 13 is displaced upward from the released release spring 14 and is in its releasing position; the release device 7 accordingly assumes its release position.
  • the switch button 10a of the auxiliary switch 10 is released and pushed out of the auxiliary switch 10 due to a pressurization to the outside, ie the auxiliary switch 10 is automatically changed from its first to its second switching state.
  • the auxiliary switch 10 could also be directly operated (pressed).
  • the second switching state of the auxiliary switch 10 indicates the triggering of the fuse 2.
  • Fig. 8 shows the push-button 17 in its lower position and the return spring 16 and the release spring 14 are stretched.
  • the push button 17 is pressed down to restore (activate) the monitoring.
  • a fixed to the push button 17 and moved from its rest position to its return position (here down led) return element 20 has the pivot member 11 (the hook 11a) pivoted back into its first position in which it rests against a stop pin 21.
  • the pivoting back by the return element 20 via a lateral projection, which is opposite to the stop element 8 and against which the return element 20 presses when passing, wherein the pivot member 11 pivots to the left.

Landscapes

  • Fuses (AREA)
EP17167918.6A 2016-05-19 2017-04-25 Dispositif de protection comprenant un fusible et procédé de surveillance électrique et de signalisation du déclenchement d'un dispositif de protection, en particulier d'un fusible Not-in-force EP3246932B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016208578.6A DE102016208578A1 (de) 2016-05-19 2016-05-19 Schutzeinrichtung mit einer Schmelzsicherung und Verfahren zur elektrischen Überwachung und Signalisierung der Auslösung einer Schutzeinrichtung, insbesondere einer Schmelzsicherung

Publications (2)

Publication Number Publication Date
EP3246932A1 true EP3246932A1 (fr) 2017-11-22
EP3246932B1 EP3246932B1 (fr) 2019-03-27

Family

ID=58632272

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17167918.6A Not-in-force EP3246932B1 (fr) 2016-05-19 2017-04-25 Dispositif de protection comprenant un fusible et procédé de surveillance électrique et de signalisation du déclenchement d'un dispositif de protection, en particulier d'un fusible

Country Status (3)

Country Link
EP (1) EP3246932B1 (fr)
CN (1) CN107452564B (fr)
DE (1) DE102016208578A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111524765A (zh) * 2020-05-27 2020-08-11 泉州台商投资区中栓机械技术有限公司 一种基于家居智能熔断器熔断机构装置系统

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7528974U (de) * 1975-09-12 1976-01-08 Siemens Ag, 1000 Berlin Und 8000 Muenchen Niederspannungs-Hochleistungs-Sicherung mit einer Anzeigevorrichtung
US5260679A (en) * 1991-12-19 1993-11-09 Ferraz Fuse cartridge of the type with functioning indicator
EP1180779A2 (fr) * 2000-08-11 2002-02-20 Weber Control B.V. Poignée
CN102705565A (zh) * 2012-06-25 2012-10-03 宁波东灵水暖空调配件有限公司 防火排烟阀的执行机构

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1081539B (de) * 1958-08-27 1960-05-12 F J Schulte Ges Mit Beschraenk Anzeigevorrichtung fuer NH-Sicherungen in Sicherungs-Trennschaltern
DE1438149A1 (de) * 1961-03-29 1969-04-17 Siemens Ag Einrichtung zur elektrischen Anzeige der Betriebsbereitschaft von NH-Sicherungen
DE4116058A1 (de) * 1991-05-16 1992-11-19 Concordia Sprecher Energie Schaltanlage
DE10062438A1 (de) * 2000-12-14 2002-06-20 Weber Control B V Handgriff
CN103280385B (zh) * 2013-05-20 2015-10-28 人民电器集团有限公司 用于熔断器上的微动开关报警装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7528974U (de) * 1975-09-12 1976-01-08 Siemens Ag, 1000 Berlin Und 8000 Muenchen Niederspannungs-Hochleistungs-Sicherung mit einer Anzeigevorrichtung
US5260679A (en) * 1991-12-19 1993-11-09 Ferraz Fuse cartridge of the type with functioning indicator
EP1180779A2 (fr) * 2000-08-11 2002-02-20 Weber Control B.V. Poignée
CN102705565A (zh) * 2012-06-25 2012-10-03 宁波东灵水暖空调配件有限公司 防火排烟阀的执行机构

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111524765A (zh) * 2020-05-27 2020-08-11 泉州台商投资区中栓机械技术有限公司 一种基于家居智能熔断器熔断机构装置系统

Also Published As

Publication number Publication date
CN107452564A (zh) 2017-12-08
CN107452564B (zh) 2020-07-24
EP3246932B1 (fr) 2019-03-27
DE102016208578A1 (de) 2017-11-23

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