EP3246932A1 - Safety device with a fuse and method for electrically monitoring and signalling the triggering of a safety device, in particular a fuse - Google Patents
Safety device with a fuse and method for electrically monitoring and signalling the triggering of a safety device, in particular a fuse Download PDFInfo
- 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
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- 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.)
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Links
- 230000011664 signaling Effects 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 9
- 238000012544 monitoring process Methods 0.000 title abstract description 27
- 230000001681 protective effect Effects 0.000 claims abstract description 20
- 239000004020 conductor Substances 0.000 claims abstract description 8
- 238000006073 displacement reaction Methods 0.000 claims description 9
- 230000036316 preload Effects 0.000 claims 1
- 239000000155 melt Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 1
- 230000009131 signaling function Effects 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective 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
- H01H85/02—Details
- H01H85/30—Means for indicating condition of fuse structurally associated with the fuse
- H01H85/303—Movable indicating elements
- H01H85/306—Movable indicating elements acting on an auxiliary switch or contact
-
- 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
-
- 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
- H01H71/12—Automatic release mechanisms with or without 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
- H01H9/10—Adaptation for built-in fuses
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
- H01H37/76—Contact 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)
Abstract
Die Erfindung betrifft eine Schutzeinrichtung mit einer Schmelzsicherung und einer Überwachungs- und Signalisierungseinheit mit einer Meldefeder (6), die bei geschmolzenem Schmelzleiter freigegeben wird und dann an einem Anschlagelement (8) anschlägt. Um eine mechanische Sicherungsüberwachung zu erzielen, die eine hohe Zuverlässigkeit aufweist, wird vorgeschlagen, dass die Meldefeder (6) zu einer Freigabeeinrichtung (7) gehört, an der das Anschlagelement (8) angeordnet ist und die von einer durch das Anschlagen freigegebenen Auslösefeder (14) aus einer Halteposition in eine Freigabeposition bewegbar ist. Ein Schalter (10), der von der Freigabeeinrichtung (7) in einem ersten Schaltzustand gehalten wird, schaltet in einen zweiten Schaltzustand, wenn sich die Freigabeeinrichtung (7) in ihrer Freigabeposition befindet, wobei der zweite Schaltzustand jeweils den geschmolzenen Schmelzleiter signalisiert. Weiter betrifft die Erfindung ein zugehöriges Verfahren.The invention relates to a protective device with a fuse and a monitoring and signaling unit with a message spring (6), which is released in a melted fusible conductor and then abuts a stop element (8). In order to achieve a mechanical safety monitoring, which has a high reliability, it is proposed that the reporting spring (6) belongs to a release device (7) on which the stop element (8) is arranged and by a release spring released by the striking (14 ) is movable from a holding position to a release position. A switch (10), which is held by the release device (7) in a first switching state, switches to a second switching state when the release device (7) is in its release position, wherein the second switching state signals each of the molten fuse element. Furthermore, the invention relates to an associated method.
Description
Die Erfindung betrifft eine Schutzeinrichtung mit einer Schmelzsicherung und ein Verfahren zur elektrischen Überwachung und Signalisierung der Auslösung einer Schutzeinrichtung, insbesondere einer Schmelzsicherung, gemäß den Oberbegriffen der Ansprüche 1 und 7.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
Schutzeinrichtungen mit einer Sicherung in Form einer Schmelzsicherung, die einen hohlen Isolierkörper aufweisen, an dem einander gegenüberliegende und durch einen Schmelzleiter verbundene elektrische Kontakte angeordnet sind, sind bekannt. Zur Signalisierung der Auslösung der Sicherung, also des geschmolzenen Schmelzleiters, ist ein Meldeelement aus dem Isolierkörper herausgeführt. Das Meldeelement in Form eines Metallhakens zieht eine Meldefeder gegen den Isolierkörper, so dass sie vorgespannt gehalten ist. Bei geschmolzenem Schmelzleiter wird die Meldefeder von dem Meldeelement freigegeben und die Meldefeder schlägt an einem Anschlagelement (Anschlagsfläche) an. Das Anschlagelement ist an einem Ende eines Doppelhebels angeordnet, welcher um eine Achse schwenkbar ist. Das Verschwenken des Doppelhebels durch die Meldefeder bewirkt die Betätigung eines Hilfsschalters, der dabei seinen Schaltzustand ändert. Der Hilfsschalter ist also entweder geöffnet oder geschlossen, wobei einer dieser beiden Schaltzustände das Auslösen der Schmelzsicherung signalisiert.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. To signal the triggering of the fuse, so the molten fuse conductor, 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. When melted fusible conductor, 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.
Derartige mechanische Sicherungsüberwachungen sind kostengünstig und beeinflussen die Stoßspannungsfestigkeit der Schutzeinrichtung nicht. Nachteilig ist allerdings, dass sie die Zuverlässigkeit der Überwachung deutlich verringern. Eine zuverlässige Sicherungsüberwachung ist damit nicht sichergestellt.Such mechanical safety monitoring systems are inexpensive and do not influence the surge voltage resistance of the protective device. The disadvantage, however, is that they significantly reduce the reliability of the monitoring. A Reliable fuse monitoring is thus not ensured.
Elektronische Sicherungsüberwachungen haben den Nachteil, dass sie die Stoßspannungsfestigkeit der Schutzeinrichtung senken und darüber hinaus auch noch teurer sind.Electronic fuse monitors have the disadvantage that they reduce the surge voltage resistance of the protective device and are also more expensive.
Die Aufgabe der Erfindung ist es, eine Schutzeinrichtung mit einer mechanischen Sicherungsüberwachung zu erzielen, die eine hohe Zuverlässigkeit aufweist. Weiter wird ein Verfahren zur elektrischen Überwachung und Signalisierung der Auslösung einer Schutzeinrichtung, insbesondere einer Schmelzsicherung, vorgeschlagen.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.
Die Aufgabe wird bezogen auf die Schutzeinrichtung durch die Merkmale des Anspruchs 1 und bezogen auf das Verfahren durch die Merkmale des Anspruchs 7 gelöst.The object is based on the protective device by the features of claim 1 and based on the method by the features of
Die Lösung sieht bezogen auf die Schutzeinrichtung vor, dass eine Freigabeeinrichtung vorhanden ist, an der das Anschlagelement (die Anschlagfläche) angeordnet ist und das (nach dem Anschlagen) von der anschlagenden Meldefeder aus einer Halteposition in eine Freigabeposition bewegbar ist, wobei die Freigabeeinrichtung eine Auslösefeder aufweist, die unter einer zweiten Vorspannung gehalten ist, wenn sich die Freigabeeinrichtung in ihrer Halteposition befindet, und die freigegeben ist, wenn sich die Freigabeeinrichtung in ihrer Freigabeposition befindet, und dass ein (Hilfs-)Schalter vorhanden ist, der von dem in ihrer Halteposition befindlichen Freigabeeinrichtung in einem ersten Schaltzustand gehalten ist und der in einen zweiten Schaltzustand geschaltet ist, wenn sich die Freigabeeinrichtung in ihrer Freigabeposition befindet, wobei der zweite Schaltzustand jeweils den geschmolzenen Schmelzleiter signalisiert.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.
Eine technisch einfache Ausführung der Freigabeeinrichtung erhält man, wenn die Freigabeeinrichtung ein Schwenkelement aufweist, das um eine Achse eines Schwenklagers schwenkbar ist und an dem mit Abstand zum Schwenklager ein Anschlagelement (die Anschlagfläche) und ein Freigabeelement mit Abstand zum Anschlagelement angeordnet sind, dass das Schwenkelement von der am Anschlagelement anschlagenden Meldefeder aus einer ersten Lage in eine zweite Lage schwenkbar ist, dass die Auslösefeder vom Schwenkelement unter einer zweiten Vorspannung gehalten ist, wenn sich das Schwenkelement in seiner ersten Lage befindet, und vom Schwenkelement freigegeben ist, wenn sich das Schwenkelement in seiner zweiten Lage befindet, dass das Freigabeelement von der freigegebenen Auslösefeder aus einer haltenden Position in eine freigebende Position verschiebbar ist, dass der (Hilfs-)Schalter von dem in seiner haltenden Position befindlichen Freigabeelement in einem ersten Schaltzustand gehalten und in einen zweiten Schaltzustand geschaltet ist, wenn das Freigabeelement in seine freigebende Position verschoben ist.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.
Eine weitere Vereinfachung ergibt sich, wenn das Schwenkelement ein schwenkbarer Haken mit einem Hakenschaft ist, an dessen einem Ende (des Hakenschafts) das Schwenklager und an dessen anderem gegenüberliegenden Ende (des Hakenschafts) ein gebogenes Hakenteil ausgebildet ist, wobei am freien Ende des gebogenen Hakenteils das Anschlagelement (die Anschlagfläche) und von diesem beabstandet am Ende des Hakenschafts ein Nocken angeordnet sind, der bei in seiner ersten Lage befindlichem Schwenkelement an einem Stützelement abgestützt ist.A further simplification results when 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.
Eine einfache Wiederherstellung der Signalisierungsfunktion erhält man, wenn das Freigabeelement zum Vorspannen der freigegebenen Auslösefeder aus ihrer freigegebenen Position in ihre haltende Position verschiebbar ist, dass korrespondierend mit der Verschiebung des Freigabeelements aus seiner freigegebenen in seine haltende Position eine Verschiebung eines Rückstellelements aus einer Ruheposition in eine Rückstellposition erfolgt, welches das Schwenkelement in seine erste Lage schwenkt (zurückstellt).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).
Mit Vorteil ist die Schutzeinrichtung so ausgeführt, dass nach der Zurückstellung des Schwenkelements eine Verschiebung des Rückstellelements in seine Ruheposition erfolgt.Advantageously, 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.
Technisch einfach ist es, wenn die Verschiebung des Rückstellelements in seine Ruheposition mittels einer Rückstellfeder erfolgt, welche am Freigabeelement abgestützt ist und deren Federkonstante kleiner als die der Auslösefeder ist.It is technically simple if the displacement of the restoring element in its rest position by means of a return spring, which is supported on the release element and the spring constant is smaller than that of the release spring.
Die Lösung sieht bezogen auf das Verfahren vor, dass eine von dem in ihrer Halteposition befindlichen Freigabeeinrichtung unter einer zweiten Vorspannung gehaltene Auslösefeder durch Bewegen der Freigabeeinrichtung in ihre Freigabeposition freigegeben wird, dass ein (Hilfs-)Schalter von der in ihrer Halteposition befindlichen Freigabeeinrichtung aus einem ersten Schaltzustand in einen zweiten Schaltzustand geschaltet wird, wenn sich die Freigabeeinrichtung in ihrer Freigabeposition befindet, wobei der zweite Schaltzustand jeweils den geschmolzenen Schmelzleiter signalisiert.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.
Die Durchführung des Verfahrens lässt sich bei einer Freigabeeinrichtung, die ein Schwenkelement aufweist, an dem das Anschlagelement (die Anschlagfläche) fest angeordnet ist und an dem ein Freigabeelement mit Abstand zum Anschlagelement schwenkbar angeordnet ist, technisch vereinfachen:
- a) wenn das Schwenkelement von der anschlagenden Meldefeder aus einer ersten Lage in eine zweite Lage verschwenkt wird,
- b) wenn die Auslösefeder vom Schwenkelement unter einer zweiten Vorspannung gehalten wird, wenn sich das Schwenkelement in seiner ersten Lage befindet, und vom Schwenkelement freigegeben wird, wenn das Schwenkelement in seine zweite Lage schwenkt, und
- c) wenn der Schalter von dem in seiner haltenden Position befindlichen Freigabeelement in einem ersten Schaltzustand gehalten wird und durch Verschieben des Freigabeelements in seine freigebende Position betätigt wird oder selbsttätig umschaltet, wenn das Freigabeelement in seine freigebende Position verschoben wird.
- a) when the pivoting element is pivoted by the abutting message spring from a first position to a second position,
- b) when 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 pivots to its second position, and
- c) when the switch is held by the release member in its holding position in a first switching state and is actuated by moving the release member into its releasing position or automatically switches, when the release element is moved to its releasing position.
Die Erfindung wird nachfolgend anhand einer Zeichnung näher beschrieben. Es zeigen:
- Fig. 1
- eine Schutzeinrichtung mit einer Schmelzsicherung und einer Überwachungs- und Signalisierungseinheit zur Überwachung und Signalisierung der Auslösung der Schmelzsicherung,
- Fig. 2
- die Überwachungs- und Signalisierungseinheit gemäß
Fig. 1 in einer vergrößerten Darstellung, - Fig. 3
- die Überwachungs- und Signalisierungseinheit gemäß
Fig. 1 und2 ohne Drucktaster, - Fig. 4
- die Überwachungs- und Signalisierungseinheit gemäß
Fig. 3 ohne Auslöse- und Rückstellfeder, und - Fig. 5
- die Überwachungs- und Signalisierungseinheit gemäß
Fig. 4 ohne Schwenkelement, - Fig. 6
- die Überwachungs- und Signalisierungseinheit gemäß
Fig. 2 mit verschwenktem Schwenkelement, - Fig. 7
- die Überwachungs- und Signalisierungseinheit gemäß
Fig. 6 mit sich in seiner freigebenden Position befindlichem Freigabeelement und - Fig. 8
- die Überwachungs- und Signalisierungseinheit gemäß
Fig. 7 mit wiederhergestellter (aktivierter) Überwachung.
- Fig. 1
- a protective device with a fuse and a monitoring and signaling unit for monitoring and signaling the release of the fuse,
- Fig. 2
- the monitoring and signaling unit according to
Fig. 1 in an enlarged view, - Fig. 3
- the monitoring and signaling unit according to
Fig. 1 and2 without pushbutton, - Fig. 4
- the monitoring and signaling unit according to
Fig. 3 without release and return spring, and - Fig. 5
- the monitoring and signaling unit according to
Fig. 4 without swivel element, - Fig. 6
- the monitoring and signaling unit according to
Fig. 2 with pivoted pivoting element, - Fig. 7
- the monitoring and signaling unit according to
Fig. 6 with release element located in its releasing position and - Fig. 8
- the monitoring and signaling unit according to
Fig. 7 with recovered (activated) monitoring.
Weiter weist die Überwachungs- und Signalisierungseinheit 3 eine Freigabeeinrichtung 7 auf, welche über ein Anschlagelement 8 in Form einer Anschlagsfläche 8a verfügt, an welcher die Meldefeder 6 anschlägt, wenn sie vom Meldeelement 5 freigegeben wird (s. auch
Die Freigabeeinrichtung 7 ist in
In
Das zusammen mit dem hakenförmigen Schwenkelement 11 nach oben verschiebbare Freigabeelement 13 ist von einer Auslösefeder 14 in Form einer (ersten) Schraubenfeder beaufschlagt, die auf der unteren Seite an einem radialen Vorsprung 15 anliegt und eine bezogen auf
Auf diese Weise wird die Auslösefeder 14 von dem in seiner ersten Lage befindlichen Schwenkelement 11 unter einer (zweiten) Vorspannung gehalten. Das Freigabeelement 13 befindet sich in seiner haltenden Position und die Freigabeeinrichtung 7 entsprechend in ihrer Halteposition.In this way, the
Am radialen Vorsprung 15 stützt sich weiter eine Rückstellfeder 16 in Form einer (zweiten) Schraubenfeder ab, die oben am Vorsprung 15 anliegt und gegen einen Drucktaster 17 drückt. Der Drucktaster 17 ist mit einer seitlichen Durchgangsöffnung 18 versehen, in die eine am Vorsprung 15 angeordnete radiale Nase 19 eingreift, welche den Hub des Drucktasters 17 begrenzt. In
In
In
In
Anschließend erfolgt eine Verschiebung des Rückstellelements 20 zurück in seine Ruheposition mittels der Rückstellfeder 16, welche am Freigabeelement 13 abgestützt ist. Die Federkonstante der Rückstellfeder 16 muss dazu entsprechend kleiner als die der Auslösefeder 16 sein.Subsequently, a displacement of the
Claims (8)
mit einer Sicherung (2), die einen Schmelzleiter aufweist, mit einem aus der Sicherung (2) herausgeführten Meldeelement (5),
mit einer Meldefeder (6), die vom Meldeelement (5) unter einer ersten Vorspannung gehalten und bei geschmolzenem Schmelzleiter freigegeben ist, und
mit einem Anschlagelement (8), an welchem die freigegebene Meldefeder (6) anschlägt,
dadurch gekennzeichnet,
dass eine Freigabeeinrichtung (7) vorhanden ist, an der das Anschlagelement (8) angeordnet ist und die von der anschlagenden Meldefeder (6) aus einer Halteposition in eine Freigabeposition bewegbar ist, wobei die Freigabeeinrichtung eine Auslösefeder (14) aufweist, die unter einer zweiten Vorspannung gehalten ist, wenn sich die Freigabeeinrichtung in ihrer Halteposition befindet, und die freigegeben ist, wenn sich die Freigabeeinrichtung (7) in ihrer Freigabeposition befindet, und dass ein Schalter (10) vorhanden ist, der von dem in ihrer Halteposition befindlichen Freigabeeinrichtung (7) in einem ersten Schaltzustand gehalten ist und der in einen zweiten Schaltzustand geschaltet ist, wenn sich die Freigabeeinrichtung (7) in ihrer Freigabeposition befindet, wobei der zweite Schaltzustand jeweils den geschmolzenen Schmelzleiter signalisiert.Protective device (1)
with a fuse (2) having a fuse element, with a signaling element (5) led out of the fuse (2),
with a reporting spring (6), which is held by the signaling element (5) under a first bias and released in molten melt conductor, and
with a stop element (8) against which the released reporting spring (6) abuts,
characterized,
in that a release device (7) is provided, on which the stop element (8) is arranged and which is movable from a stopping signal spring (6) from a holding position into a release position, wherein the release device has a release spring (14) which under a second Preload is held when the release device is in its holding position, and which is released when the release device (7) is in its release position, and that a switch (10) is provided by the release device located in its holding position (7 ) is held in a first switching state and is switched to a second switching state when the release device (7) is in its release position, wherein the second switching state signals each of the molten fuse element.
dadurch gekennzeichnet,
dass die Freigabeeinrichtung (7) ein Schwenkelement (11) aufweist, das um eine Achse eines Schwenklagers (12) schwenkbar ist und an dem mit Abstand zum Schwenklager (12) ein Anschlagelement (8) und ein Freigabeelement (13) mit Abstand zum Anschlagelement (8) angeordnet sind,
dass das Schwenkelement (11) von der am Anschlagelement (8) anschlagenden Meldefeder (6) aus einer ersten Lage in eine zweite Lage verschwenkbar ist,
dass die Auslösefeder (14) vom Schwenkelement (11) unter einer zweiten Vorspannung gehalten ist, wenn sich das Schwenkelement (11) in seiner ersten Lage befindet, und vom Schwenkelement (11) freigegeben ist, wenn sich das Schwenkelement (11) in seiner zweiten Lage befindet,
dass das Freigabeelement (13) von der freigegebenen Auslösefeder (14) aus einer haltenden Position in eine freigebende Position verschiebbar ist,
dass der Schalter (10) von dem in seiner haltenden Position befindlichen Freigabeelement (13) in einem ersten Schaltzustand gehalten und in einen zweiten Schaltzustand geschaltet ist, wenn das Freigabeelement (13) in seine freigebende Position verschoben ist.Protective device according to claim 1,
characterized,
in that the release device (7) has a pivoting element (11) which is pivotable about an axis of a pivot bearing (12) and at the distance from the pivot bearing (12) a stop element (8) and a release element (13) at a distance from the stop element ( 8) are arranged,
in that the pivoting element (11) moves from a first position into a locking spring (6) abutting on the stop element (8) second position is pivotable,
that the trigger spring (14) from the pivot member (11) is maintained under a second bias voltage when the pivot member (11) is in its first position, and from the pivot member (11) is released when the pivotal element (11) second in its Location is located
in that the release element (13) is displaceable from the released release spring (14) from a holding position into a releasing position,
in that the switch (10) is held in a first switching state by the release element (13) in its holding position and switched to a second switching state when the release element (13) is displaced into its releasing position.
dadurch gekennzeichnet,
dass das Schwenkelement (11) ein verschwenbarer Haken (11a) mit einem Hakenschaft (11b) ist, an dessen einem Ende das Schwenklager (12) und an dessen anderem gegenüberliegenden Ende ein gebogenes Hakenteil (11c) ausgebildet ist, wobei am freien Ende des gebogenen Hakenteils (11c) das Anschlagelement (8) und von diesem beabstandet am Ende des Hakenschafts ein Nocken (11a) angeordnet sind, der bei in seiner ersten Lage befindlichem Schwenkelement (11) an einem Stützelement (11d) abgestützt ist.Protective device according to claim 2,
characterized,
in that the pivoting element (11) is a verschwenbarer hook (11a) with a hook shank (11b), at one end of the pivot bearing (12) and at the other opposite end of a bent hook portion (11c) is formed, wherein at the free end of the bent Hook member (11c) the stopper member (8) and spaced therefrom at the end of the hook shank, a cam (11a) are arranged, which is supported on a support member (11d) in its first position located pivot member (11).
dadurch gekennzeichnet,
dass das Freigabeelement (13) zum Vorspannen der freigegebenen Auslösefeder (14) aus ihrer freigegebenen Position in ihre haltende Position verschiebbar ist, dass korrespondierend mit der Verschiebung des Freigabeelements (13) aus seiner freigegebenen in seine haltende Position eine Verschiebung eines Rückstellelements (20) aus einer Ruheposition in eine Rückstellposition erfolgt, welches das Schwenkelement (11) in seine erste Lage verschwenkt.Protective device according to claim 2 or 3,
characterized,
that the release element (13) for biasing the released release spring (14) from its released position to its holding position is displaceable corresponding to the displacement of the release element (13) from its released to its holding position, a displacement of a return element (20) a rest position takes place in a return position, which pivots the pivoting element (11) in its first position.
dadurch gekennzeichnet,
dass nach der Zurückstellung des Schwenkelements (11) eine Verschiebung des Rückstellelements (20) in seine Ruheposition erfolgt.Protective device according to claim 4,
characterized,
that after the return of the pivoting element (11), a displacement of the return element (20) takes place in its rest position.
dadurch gekennzeichnet,
dass die Verschiebung des Rückstellelements (20) aus seiner Rückstellposition zurück in seine Ruheposition mittels einer Rückstellfeder (16) erfolgt, welche am Freigabeelement (13) abgestützt ist und deren Federkonstante kleiner als die der Auslösefeder (14) ist.Protective device according to claim 4 or 5,
characterized,
in that the displacement of the return element (20) from its return position takes place back into its rest position by means of a return spring (16) which is supported on the release element (13) and whose spring constant is smaller than that of the release spring (14).
bei dem vom Meldeelement (5) eine Meldefeder (6) unter einer ersten Vorspannung gehalten und bei geschmolzenem Schmelzleiter freigegeben wird,
bei dem die freigegebene Meldefeder (6) an einem Anschlagelement (8) anschlägt, das an einer Freigabeeinrichtung (7) angeordnet ist,
bei dem die Freigabeeinrichtung (7) durch die anschlagende Meldefeder (6) aus einer Halteposition in eine Freigabeposition bewegt wird,
dadurch gekennzeichnet,
dass eine von dem in ihrer Halteposition befindlichen Freigabeeinrichtung (7) unter einer zweiten Vorspannung gehaltene Auslösefeder (14) durch Bewegen der Freigabeeinrichtung (7) in ihre Freigabeposition freigegeben wird,
dass ein Schalter (10) von der in ihrer Halteposition befindlichen Freigabeeinrichtung (7).Method for the electrical signaling of the triggering of a protective device (1) which has a fuse (2) in which a fusible conductor is arranged, a fuse element (5) being led out of the fuse (2),
in which a signaling spring (6) is held under a first bias by the signaling element (5) and released when the melted melt conductor is in contact,
in which the released reporting spring (6) abuts a stop element (8) which is arranged on a release device (7),
in which the release device (7) is moved from a stop position to a release position by the striking message spring (6),
characterized,
in that a release spring (14) held by the release device (7) in its holding position under a second bias is released by moving the release device (7) into its release position,
in that a switch (10) is provided by the release device (7) in its holding position.
dadurch gekennzeichnet,
dass die Freigabeeinrichtung (7) ein Schwenkelement (11) aufweist, an dem das Anschlagelement (8) fest angeordnet ist und an dem ein Freigabeelement (13) mit Abstand zum Anschlagelement(8) schwenkbar angeordnet ist,
dass das Schwenkelement (11) von der anschlagenden Meldefeder (6) aus einer ersten Lage in eine zweite Lage verschwenkt wird,
dass die Auslösefeder (14) vom Schwenkelement (11) unter einer zweiten Vorspannung gehalten wird, wenn sich das Schwenkelement (11) in seiner ersten Lage befindet, und vom Schwenkelement (11) freigegeben wird, wenn das Schwenkelement (11) in seine zweite Lage verschwenkt wird, und dass der Schalter (10) von dem in seiner haltenden Position befindlichen Freigabeelement (13) in einem ersten Schaltzustand gehalten wird und durch Verschieben des Freigabeelements (13) in seine freigebende Position betätigt wird oder selbsttätig umschaltet, wenn das Freigabeelement (13) in seine freigebenden Position verschoben wird.Method according to claim 7,
characterized,
that the release device (7) comprises a pivot member (11) on which the stop element (8) is fixed and to which a release member (13) pivotally arranged at a distance from the stop element (8),
that the pivoting element (11) from the abutting reporting spring (6) is pivoted from a first position to a second position,
that the trigger spring (14) from the pivot member (11) is maintained under a second bias voltage when the pivot member (11) is in its first position, and from the pivot member (11) is released when the pivotal element (11) in its second position is pivoted, and that the switch (10) is held by the release member (13) in its holding position in a first switching state and actuated by moving the release member (13) in its releasing position or automatically switched when the release element (13 ) is moved to its releasing position.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016208578.6A DE102016208578A1 (en) | 2016-05-19 | 2016-05-19 | Protective device with a fuse and method for electrical monitoring and signaling the triggering of a protective device, in particular a fuse |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3246932A1 true EP3246932A1 (en) | 2017-11-22 |
EP3246932B1 EP3246932B1 (en) | 2019-03-27 |
Family
ID=58632272
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17167918.6A Not-in-force EP3246932B1 (en) | 2016-05-19 | 2017-04-25 | Safety device with a fuse and method for electrically monitoring and signalling the triggering of a safety device, in particular a fuse |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3246932B1 (en) |
CN (1) | CN107452564B (en) |
DE (1) | DE102016208578A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111524765A (en) * | 2020-05-27 | 2020-08-11 | 泉州台商投资区中栓机械技术有限公司 | Household-based intelligent fuse fusing mechanism device system |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7528974U (en) * | 1975-09-12 | 1976-01-08 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Low-voltage, high-performance fuse with a display device |
US5260679A (en) * | 1991-12-19 | 1993-11-09 | Ferraz | Fuse cartridge of the type with functioning indicator |
EP1180779A2 (en) * | 2000-08-11 | 2002-02-20 | Weber Control B.V. | Handle |
CN102705565A (en) * | 2012-06-25 | 2012-10-03 | 宁波东灵水暖空调配件有限公司 | Actuating mechanism of fireproof smoke exhaust valve |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1081539B (en) * | 1958-08-27 | 1960-05-12 | F J Schulte Ges Mit Beschraenk | Display device for NH fuses in fuse disconnectors |
DE1438149A1 (en) * | 1961-03-29 | 1969-04-17 | Siemens Ag | Device for the electrical display of the operational readiness of NH fuses |
DE4116058A1 (en) * | 1991-05-16 | 1992-11-19 | Concordia Sprecher Energie | Switchgear with fuse-holder installed in tubular heater housing - has cover contg. captive pin which protrudes when axially movable hammer is displaced w.r.t. contact piece |
DE10062438A1 (en) * | 2000-12-14 | 2002-06-20 | Weber Control B V | Handgrip for LV high power fuse has mechanical display device for indicating fuse operating condition by its position relative to outer surface of handgrip |
CN103280385B (en) * | 2013-05-20 | 2015-10-28 | 人民电器集团有限公司 | Sensitive switch warning device on fuse |
-
2016
- 2016-05-19 DE DE102016208578.6A patent/DE102016208578A1/en not_active Ceased
-
2017
- 2017-04-25 EP EP17167918.6A patent/EP3246932B1/en not_active Not-in-force
- 2017-05-19 CN CN201710355197.4A patent/CN107452564B/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7528974U (en) * | 1975-09-12 | 1976-01-08 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Low-voltage, high-performance fuse with a display device |
US5260679A (en) * | 1991-12-19 | 1993-11-09 | Ferraz | Fuse cartridge of the type with functioning indicator |
EP1180779A2 (en) * | 2000-08-11 | 2002-02-20 | Weber Control B.V. | Handle |
CN102705565A (en) * | 2012-06-25 | 2012-10-03 | 宁波东灵水暖空调配件有限公司 | Actuating mechanism of fireproof smoke exhaust valve |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111524765A (en) * | 2020-05-27 | 2020-08-11 | 泉州台商投资区中栓机械技术有限公司 | Household-based intelligent fuse fusing mechanism device system |
Also Published As
Publication number | Publication date |
---|---|
DE102016208578A1 (en) | 2017-11-23 |
CN107452564A (en) | 2017-12-08 |
CN107452564B (en) | 2020-07-24 |
EP3246932B1 (en) | 2019-03-27 |
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