EP3685417B1 - Dispositif d'indication ou de commutation pouvant être déclenché thermiquement - Google Patents

Dispositif d'indication ou de commutation pouvant être déclenché thermiquement Download PDF

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Publication number
EP3685417B1
EP3685417B1 EP19805215.1A EP19805215A EP3685417B1 EP 3685417 B1 EP3685417 B1 EP 3685417B1 EP 19805215 A EP19805215 A EP 19805215A EP 3685417 B1 EP3685417 B1 EP 3685417B1
Authority
EP
European Patent Office
Prior art keywords
switching device
indicating
slide
preformed part
thermally
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP19805215.1A
Other languages
German (de)
English (en)
Other versions
EP3685417A1 (fr
Inventor
Stephan Hierl
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.)
Dehn SE and Co KG
Original Assignee
Dehn and Soehne GmbH and Co KG
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Application filed by Dehn and Soehne GmbH and Co KG filed Critical Dehn and Soehne GmbH and Co KG
Publication of EP3685417A1 publication Critical patent/EP3685417A1/fr
Application granted granted Critical
Publication of EP3685417B1 publication Critical patent/EP3685417B1/fr
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Classifications

    • 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
    • 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
    • H01H37/761—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material with a fusible element forming part of the switched circuit
    • 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
    • H01H37/764—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material in which contacts are held closed by a thermal pellet
    • 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
    • H01H37/761—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material with a fusible element forming part of the switched circuit
    • H01H2037/762—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material with a fusible element forming part of the switched circuit using a spring for opening the circuit when the fusible element melts

Definitions

  • the invention is based on a thermally triggered display or switching device with a movable, mechanically pretensionable slide, which directly or indirectly triggers or actuates the display or switching device and with a molded part that changes its physical state under the action of heat, the molded part being the movable slider in the functional state can be arranged blocking, according to the preamble of claim 1.
  • a thermally triggered, mechanical switching device is previously known.
  • This consists of a heat-sensitive means and a mechanical energy store, the heat-sensitive means being designed as a molded melt part.
  • the molded part blocks the movement path of a contact piece implemented as a plunger or releases this movement path.
  • the ram is pretensioned by the mechanical energy store.
  • the plunger is mounted inside the housing and can be moved through an opening on the face.
  • the plunger is supported under prestress against the molded melt part, the molded melt part being arranged to cover a second opening opposite the opening on the end face.
  • the melting temperature of the molded melt part is reached, the same is displaced by the plunger and the plunger is brought into a changed position.
  • a display or switching device can be triggered directly or indirectly.
  • the at least one discharge element should be disconnected from the network on one or all poles.
  • the disconnection device comprises a soldering point which is integrated into the electrical connection path within the arrester.
  • the soldering point is connected to the diverting element on the one hand and the conductor section or the bridge on the other hand to an electrical external connection of the diverter via a movable conductor section or a movably conductive bridge.
  • a spring generating a biasing force, the force vector in this regard acting directly or indirectly on the conductor section or the bridge in the separation direction.
  • a thermally releasable blocking element blocks the movable conductor section or the movable conductive bridge with regard to the prestressing force vector, so that the soldering point of the separating device is not exposed to any permanent load on the force side.
  • a separating device which comprises at least two electronic components to be monitored, which are fastened to a carrier by means of a thermally softenable fixation.
  • An energy storage device is assigned to each component, for example a spring, which moves the associated component essentially parallel to the carrier when the thermally softenable fixation softens.
  • the separating device further comprises a mechanically displaceable display means which indicates when one or more of the components have been separated.
  • the DE 22 20 264 A1 describes an overheating protection or display device comprising a switch and a retaining element which melts at a higher temperature. Furthermore, a switch body is provided which is brought into engagement with the switch by means of a spring when the holding element melts.
  • the object of the invention is to provide a thermally triggered display or switching device with a movable, mechanically preloaded slide and with a molded part that changes its physical state under the action of heat, which can be produced in a simple and inexpensive manner, and there is the possibility that a The device can be activated subsequently, that is, independently of the actual assembly and manufacturing process. There should therefore be the possibility that the to bring the thermal release function into readiness only when a use of the component or component equipped with it is intended or has taken place.
  • the aim of the invention is therefore to allow the customer to enable the display or switching device, as it were, thereby avoiding at the same time that the molded part used is exposed to an unnecessary load that arises in advance.
  • the object of the invention is achieved with the combination of features according to claim 1 and with a surge arrester arrangement according to claim 8.
  • thermally triggered display or switching device which comprises a movable, mechanically pretensioned slide.
  • the slide can directly or indirectly trigger or actuate the display or switching device.
  • the slide itself can be located as an insulating separating slide between two contacts and either interrupt or close them. However, the slide can also actuate a known micro-button or the like.
  • the display device can be designed in the form of a display surface, which is located below a display window and uses an optical color change.
  • a display surface which is located below a display window and uses an optical color change.
  • the molded part can be, for example, a pill or a similar element made from a solder, a wax or a thermoplastic material.
  • the molded part is arranged in such a way that it blocks the movable slide.
  • the molded part in the initial state, that is to say on the production side, the molded part is loosely located in a receiving space.
  • the slide is moved into a position such that a gap opens between the slide and a slide stop.
  • the molded part now enters the gap.
  • the slide is pretensioned at the same time. This can be done with a spring arrangement.
  • the slide comes into contact with the molded part with its end facing the gap space and fixes it.
  • the elastic or flexible arm now secures the molded part in the gap against being pushed out or falling out.
  • the arm has an inclined sliding surface.
  • This inclined sliding surface is particularly advantageous when the molded part has the shape of a disk, a pill or a ball. In any case, it is ensured here that when the device is activated, the molded part can be safely transferred into the gap space and also remains there, regardless of mechanical vibrations and similar loads.
  • At least one guide element can be formed adjacent to the arm in order to secure and support the movement of the molded part into the gap space.
  • the slide has an extension which merges into a display area or comprises such a display area.
  • the extension can also be used to operate a switch at the same time.
  • the molded part When the molded part is heated, for example due to heat loss from neighboring electronic components, the molded part melts or changes its state of aggregation.
  • a first switch With the melting of the molded part and the change in position of the slide, a first switch can be closed and a second switch can be opened.
  • this can be implemented the other way around, in that a first switch is opened and a second switch is closed. It is also possible to design a switch as a changeover contact.
  • the teaching according to the invention allows the display and switching device to be activated individually and with a time delay, that is to say only in the case of use, as a result of which unnecessary mechanical stress on the molded part can be prevented regardless of any storage times.
  • a surge arrester arrangement with at least one surge protection element which is subject to heating in the event of an overload, comprising the aforementioned thermally triggered display or switching device with the features described above.
  • the thermally triggerable display or switching device shown in more detail in the following exemplary embodiment, is based on a carrier 1 which has a stop and guide element 2 for a movable slide 3.
  • the slide 3 has an extension 4 which merges into a display area 5.
  • One end of the extension 4 is also able to operate a first switch 6 and a second switch 7, that is, to open or close, which is symbolically illustrated by the action of operating elements 8 and 9 for the switches 6 and 7 .
  • the molded part 12 can be inserted into the receiving space 11 from above.
  • a guide element 13 is arranged within the receiving space 11.
  • the slide 3 can be pretensioned using a spring 14.
  • the spring 14 is located within a cavity of the slide 3.
  • alternative options for the arrangement of the spring 14 in relation to the slide 3 are also possible here.
  • the slide 3 for example with the aid of a force acting on the extension 4, moves in the direction X1.
  • the preformed solder part 12 enters the gap 15 created by the slide movement, symbolized by the arrow in the direction Y1.
  • the spring 14 is also tensioned at the same time.
  • the molded part 12 After the corresponding heat action on the molded part 12, that is to say when, for example, the melting temperature of a solder from which the molded part is made is reached, the molded part changes its state of aggregation. This is supported by the quasi-stamp-like action of the slide 3 in addition to the force from the spring 14.
  • the necessary thermal energy for deforming the molded part 12 can be supplied via the element 2, in which case the element 2 is made in particular from a material which forms a heat sink.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Fuses (AREA)
  • Thermally Actuated Switches (AREA)
  • Slide Switches (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)
  • Surgical Instruments (AREA)

Claims (8)

  1. Moyen d'affichage ou de commutation thermiquement déclenchable, comprenant une vanne (3) mobile et mécaniquement précontrainte qui déclenche ou actionne directement ou indirectement le moyen d'affichage ou de commutation (5, 6, 7), et comprenant une pièce moulée (12) changeant son état d'agrégation sous l'effet de chaleur, la pièce moulée (12) étant apte à être agencée de manière à bloquer la vanne mobile (3) à l'état fonctionnel,
    caractérisé en ce que
    à l'état initial, la pièce moulée (12) est logée de manière lâche dans un espace de logement (11), la vanne (3), pour transférer la pièce moulée (12) dans l'état fonctionnel, étant déplacée dans une position de telle sorte qu'un espace d'écartement (15) s'ouvre entre la vanne (3) et la butée de vanne (2),
    la pièce moulée, assistée par un bras (10) élastique ou flexible relié à la vanne (3), parvenant dans l'espace d'écartement (15), et la vanne (3) étant précontrainte et le bras (10) élastique ou flexible bloquant ainsi la pièce moulée (12) dans l'espace d'écartement (15).
  2. Moyen d'affichage ou de commutation thermiquement déclenchable selon la revendication 1, caractérisé en ce que le bras (10) présente une surface inclinée de coulissement (100) pour soutenir le mouvement de la pièce moulée (12) dans le but d'activer le moyen d'affichage ou de commutation (5, 6, 7).
  3. Moyen d'affichage ou de commutation thermiquement déclenchable selon la revendication 1 ou 2, caractérisé en ce qu'au moins un élément de guidage (13) est réalisé adjacent au bras (10) pour assurer le mouvement de la pièce moulée (12) dans l'espace d'écartement (15).
  4. Moyen d'affichage ou de commutation thermiquement déclenchable selon l'une des revendications précédentes, caractérisé en ce que la vanne (3) présente un prolongement (4) qui présente une surface d'affichage et/ou un actionnement de commutateur.
  5. Moyen d'affichage ou de commutation thermiquement déclenchabe selon l'une des revendications précédentes, caractérisé en ce que lors du réchauffement de la pièce moulée (12), par exemple dû à la chaleur dissipée de composants électroniques adjacents, la pièce moulée (12) fond, grâce à quoi, assisté par la vanne précontrainte (3), l'espace d'écartement (15) se rétrécit, ce qui mène à un changement de la position ou de l'état du moyen d'affichage ou de commutation (5, 6, 7).
  6. Moyen d'affichage ou de commutation thermiquement déclenchable selon la revendication 5, caractérisé en ce qu'avec la fusion de la pièce moulée (12) et le changement de position de la vanne (3), un premier commutateur (6) est fermé et un deuxième commutateur (7) est ouvert, ou vice versa.
  7. Moyen d'affichage ou de commutation thermiquement déclenchable selon l'une des revendications précédentes, caractérisé en ce que l'activation du moyen d'affichage ou de commutation (5, 6, 7) est effectué individuellement et de manière différée, c'est-à-dire uniquement en cas d'application.
  8. Agencement de parasurtenseur comprenant au moins un élément de protection contre les surtensions qui est soumis à un réchauffement dans un cas de surcharge, comprenant un moyen d'affichage ou de commutation (5, 6, 7) thermiquement déclenchable selon l'une des revendications précédentes.
EP19805215.1A 2018-12-12 2019-11-13 Dispositif d'indication ou de commutation pouvant être déclenché thermiquement Active EP3685417B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018131975.4A DE102018131975B4 (de) 2018-12-12 2018-12-12 Thermisch auslösbare Anzeige- oder Schalteinrichtung sowie Überspannungsableiteranordnung mit einer thermisch auslösbaren Anzeige- oder Schalteinrichtung
PCT/EP2019/081159 WO2020120057A1 (fr) 2018-12-12 2019-11-13 Dispositif d'indication ou de commutation pouvant être déclenché thermiquement

Publications (2)

Publication Number Publication Date
EP3685417A1 EP3685417A1 (fr) 2020-07-29
EP3685417B1 true EP3685417B1 (fr) 2021-09-08

Family

ID=68583381

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19805215.1A Active EP3685417B1 (fr) 2018-12-12 2019-11-13 Dispositif d'indication ou de commutation pouvant être déclenché thermiquement

Country Status (6)

Country Link
US (1) US11295915B2 (fr)
EP (1) EP3685417B1 (fr)
JP (1) JP7394136B2 (fr)
CN (1) CN113383401A (fr)
DE (1) DE102018131975B4 (fr)
WO (1) WO2020120057A1 (fr)

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2135795A5 (fr) 1971-04-29 1972-12-22 Moulinex Sa
US3924218A (en) * 1974-05-22 1975-12-02 Micro Devices Corp Thermal limiter construction
US4060787A (en) * 1976-11-12 1977-11-29 Minnesota Mining And Manufacturing Company Thermal switch
DE102006037551B4 (de) 2006-02-13 2012-03-22 Dehn + Söhne Gmbh + Co. Kg Überspannungsableiter mit mindestens einem Ableitelement, beispielsweise einem Varistor
DE102010061110A1 (de) * 2010-12-08 2012-06-14 Phoenix Contact Gmbh & Co. Kg Thermische Abtrennvorrichtung
US9455106B2 (en) * 2011-02-02 2016-09-27 Littelfuse, Inc. Three-function reflowable circuit protection device
US8941461B2 (en) * 2011-02-02 2015-01-27 Tyco Electronics Corporation Three-function reflowable circuit protection device
US9620318B2 (en) * 2011-08-12 2017-04-11 Littlefuse, Inc. Reflowable circuit protection device
CN103247498A (zh) * 2013-03-29 2013-08-14 厦门赛尔特电子有限公司 一种带双爪簧片的温度保险丝
DE202013012174U1 (de) * 2013-10-22 2015-07-02 Dehn + Söhne Gmbh + Co. Kg Überspannungsschutzeinrichtung, umfassend mindestens einen Überspannungsableiter und eine, mit dem Überspannungsableiter in Reihe geschaltete, thermisch auslösbare Schalteinrichtung
DE102015213050A1 (de) 2015-07-13 2017-01-19 Phoenix Contact Gmbh & Co. Kg Varistor mit einer Abtrennvorrichtung
DE102015014163A1 (de) * 2015-09-08 2017-03-09 DEHN + SÖHNE GmbH + Co. KG. Vorrichtung zum thermischen Auslösen, Abtrennen und/oder Signalisieren des Zustandes eines Überspannungsschutzgerätes
LU93090B1 (de) * 2016-05-31 2017-12-20 Phoenix Contact Gmbh & Co Kg Intellectual Property Licenses & Standards Bauraumoptimierte Abtrennvorrichtung
DE102017105436B3 (de) 2017-03-14 2018-06-14 DEHN + SÖHNE GmbH + Co. KG. Thermisch auslösbare, mechanische Schalteinrichtung
DE102018125520A1 (de) * 2018-10-15 2020-04-16 Dehn Se + Co Kg Überspannungsschutzgerät mit mehreren Überspannungsableitern und diesen jeweils zugeordneter, insbesondere thermischer, Abtrennvorrichtung

Also Published As

Publication number Publication date
DE102018131975B4 (de) 2021-01-14
DE102018131975A1 (de) 2020-06-18
WO2020120057A1 (fr) 2020-06-18
CN113383401A (zh) 2021-09-10
JP7394136B2 (ja) 2023-12-07
EP3685417A1 (fr) 2020-07-29
US11295915B2 (en) 2022-04-05
JP2022513465A (ja) 2022-02-08
US20220013314A1 (en) 2022-01-13
WO2020120057A8 (fr) 2021-09-16

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