WO2018211058A1 - Unité de séparation pour une varistance - Google Patents

Unité de séparation pour une varistance Download PDF

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Publication number
WO2018211058A1
WO2018211058A1 PCT/EP2018/063055 EP2018063055W WO2018211058A1 WO 2018211058 A1 WO2018211058 A1 WO 2018211058A1 EP 2018063055 W EP2018063055 W EP 2018063055W WO 2018211058 A1 WO2018211058 A1 WO 2018211058A1
Authority
WO
WIPO (PCT)
Prior art keywords
varistor
contact
cover
separation unit
housing
Prior art date
Application number
PCT/EP2018/063055
Other languages
German (de)
English (en)
Inventor
Rainer Durth
Original Assignee
Phoenix Contact Gmbh & Co.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 Phoenix Contact Gmbh & Co.Kg filed Critical Phoenix Contact Gmbh & Co.Kg
Priority to CN201880032740.XA priority Critical patent/CN110678941A/zh
Publication of WO2018211058A1 publication Critical patent/WO2018211058A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/10—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess voltage, e.g. for lightning protection
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C1/00—Details
    • H01C1/14—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors
    • H01C1/144—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors the terminals or tapping points being welded or soldered
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
    • H01C7/102—Varistor boundary, e.g. surface layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
    • H01C7/12—Overvoltage protection resistors
    • H01C7/126—Means for protecting against excessive pressure or for disconnecting in case of failure
    • 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
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T1/00—Details of spark gaps
    • H01T1/14—Means structurally associated with spark gap for protecting it against overload or for disconnecting it in case of failure
    • 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
    • H01H2037/763—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 the spring being a blade spring
    • 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
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/32—Insulating body insertable between contacts

Definitions

  • the invention relates to a separation unit for a varistor.
  • the invention has set itself the task of providing a novel separation unit for a varistor which is universally installable.
  • the object is achieved by a separation unit according to claim 1 or by a housing according to claim 5 or by a varistor contact according to claim 10 by a varistor terminal according to claim 14.
  • Advantageous embodiments of the invention are specified in the subclaims, the description and the figures.
  • FIG. 1 is a sectional view of embodiments of the invention
  • 2 is a side view of embodiments of the invention
  • FIG. 3 is a sectional view of embodiments of the invention
  • FIG. 4 is an aspect of embodiments of the invention shown in FIG. 3
  • FIG. 5 is an aspect of embodiments of the invention
  • FIG. 6 shows the aspect of the embodiments of the invention according to FIG. 5 in a different viewing direction
  • FIG. 8 shows a further detail of the aspect according to embodiments of the invention according to FIG. 5 or 6 in a plan view
  • FIG. 11 shows a detail of the further aspect of embodiments according to the invention according to FIG. 9 or 10, and FIG.
  • FIGS. 12-14 show different variants of a further detail of embodiments according to the invention according to FIG. 9 or 10 or 11.
  • FIGS. 1 and 3 show embodiments of the invention with reference to a separation unit AE for a varistor V.
  • the varistor V has a first varistor contact VK1 and a second varistor contact VK2, which are set up to connect the varistor V to a supply network.
  • the separating device AE provides a cover-like covering of the first varistor contact VK1, wherein the cover-like cover has an opening Ol for contacting the first varistor contact VK1.
  • a (then) force-loaded varistor connection VA1 is contacted by means of a thermally softenable adhesive LI through the cover-like opening O1 to the first varistor contact VK1.
  • the force-loaded varistor connection VA1 (under the influence of the application of force) is moved away from the opening Ol.
  • the separation unit AE furthermore has a force-loaded slide S, wherein the force-loaded slide S closes the opening O1 in the cover-like cover in the event of the force-moved varistor connection VAl moving away.
  • Figures 1 and 3 and Figure 4 show a housing for a varistor V comprising a separation unit AE and another cover D.
  • the further cover D provides a cover-like cover of the second varistor VK2 contact, wherein the cover-like cover has an opening 02 for Contacting the second varistor VK2 contact.
  • a (second) varistor connection VA2 is contacted by means of an adhesive L2 through the cover-like opening 02 to the second varistor contact VK2, wherein the separation unit AE and the further cover D engage in a form-fitting manner.
  • FIGS. 1 and 3 as well as FIGS. 5 to 8 show a varistor contact VK1, VK2 for application to a varistor V.
  • the varistor contact VK1, VK2 has an electrically conductive material, wherein the varistor contact VK1, VK2 has a substantially planar contact a Varistoran gleichisation a varistor V, wherein the varistor contact has a linear curvature W for contacting with a Varistoran gleich.
  • a linear curvature offers the advantage that only a very small area is provided for attacking an arc.
  • potential arc base points are broadened to provide improved arc cooling.
  • this makes it possible that the slide S of the separation unit AE gets a large Göfahrweg provided so that in the case of separation, an arc can be drawn in length, so that this leaves.
  • the varistor contact to the varistor V represents a large contact area, so that a good thermal and electrical coupling is provided. Due to the good electrical coupling as even as possible loading of the varistor V allows while a thermal overload can be performed quickly from the varistor VKL, VK2 to the bulge W and thus to the separation point / adhesive LI, L2.
  • the contact with a varistor connection is preferably linear in order to provide a safe, yet variable connecting point which protrudes from an opening O1, O2 of a possible housing AE or D, respectively.
  • the linear curvature W is in this case simple in terms of production, e.g. by bending (see, for example, Figure 7).
  • the curvature can be arranged centrally (see, for example, FIGS. 6 and 8) or else outside the center.
  • FIGS. 1 and 3 as well as FIGS. 9-14 show a varistor connection VA1, VA2 for contacting a varistor V in a housing.
  • the varistor connection VA1 has at least one section AI for mounting in a housing part, wherein the varistor connection VA1 has a section for providing an electrical contact outside the housing, and wherein the varistor connection VA1, VA2 furthermore has a section A2 for contacting with a varistor contact VK1, VK2 has, wherein the varistor VAl, VA2 is integrally formed.
  • the varistor terminal may e.g. be formed as a stamped bent part of a metal strip.
  • 9 shows a first side view, which is provided in its upper portion A2 for contacting with a varistor contact VK1, VK2, and which is provided in its lower portion AI for mounting in the housing.
  • individual sections for example the lateral sections repelling in Figure 9 and pointing forwards or backwards in Figure 10) may be provided with support structures (e.g., teeth) as shown in Figure 11.
  • the daggerboard area (below AI) may be suitably shaped, e.g. to meet different requirements.
  • the dovetail area is designed to be more like a pyramid (stump) -like (FIG. 13) or even non-linearly tapering.
  • some forms of mixing may be provided.
  • Strength requirements and / or tolerance compensation are provided.
  • the formations of Figure 12 and 13 a particularly simple insertion in the vertical direction with a horizontal self-centering.
  • the varistor connection can be used on both sides of the varistor. He can be both “strained” and “unstrained” attached.
  • the Varistor connection VAl in Figure 1 and Figure 3 braced (possibly also slightly twisted) attached to the contact (soldered).
  • cushioning is provided by the varistor contact VK1 when softening.
  • Similar Varistoran say can be used and yet, for example, a desired high distance between the open contacts can be realized.
  • each one of the aforementioned units contributes. In this respect, it is not necessary for the realization of the objects of the invention to provide all the units according to the invention. Each individual has advantages that lead to a cost reduction. By means of the invention it becomes possible to provide a uniform concept for a multiplicity of different varistors and, thus, intended purposes.
  • the varistor V (having one or more series-connected varistor disks) can be contacted by means of uniform varistor connections VA1 and VA2.
  • suitable varistor contacts VK1, VK2 can be mounted on the varistor V.
  • the housing can be formed so that a large number of similar parts can be used for different embodiments of the varistor.
  • the cover has a projection I on the side of the first varistor contact VK1.
  • the projection I e.g. can be designed circumferentially, the environment of the opening Ol (or 02) can be sealed, so that in case of Naturallegierens of the varistor V, the escape of components / gases / decomposition products through the opening Ol (or 02) is prevented.
  • the separation unit or the lid D rests on the circumferential projection I.
  • the slider S under the action of force exerts a sliding and / or rotational movement parallel to the lid surface.
  • the lid comprises a material of an injection molding.
  • housing parts can be produced in a particularly cost-effective manner.
  • the separation unit AE and the further cover D latching elements -. a fine toothing - on, so that the separation unit and the other cover are connected in the assembled state.
  • These locking means may e.g. be realized by a toothing and / or corresponding projections / recesses (in injection molding).
  • a secure recording of the varistor V can be provided with simultaneous ease of installation.
  • the latching elements are arranged so that a plurality of different thickness varistors V can be accommodated in the housing.
  • a plurality of toothings and / or corresponding projections / recesses may be provided on a housing part. If the other housing part is then applied, the corresponding latching means can be pushed over until a stop is reached (for example by contact with the projection I or the varistor V or the varistor contact VK1, VK2).
  • the linear curvature W is a pressed and / or folded seam.
  • the linear curvature W can also be provided on a shorter section than the largest extension of the varistor contact, such as e.g. shown in the figure 6 and 8, respectively.
  • the line-like curvature W can subdivide the connection surface into two symmetrical or two asymmetrical parts.
  • FIGS. 6 and 8 a subdivision into symmetrical connection surfaces with respect to the varistor is shown.
  • a section AI of the varistor terminal VA1, VA2 is designed for mounting in a housing part in such a way that, when mounted in the corresponding housing part, it makes subsequent removal difficult (FIG. 11). This provides a secure hold.
  • the varistor connection VA1, VA2 can provide a three-point support (for example by angled lugs) in the section AI relative to a housing part.
  • the angled flags can, as shown in FIG. 11, have latching devices which catch there when pressed into a plastic housing part.
  • the latched Varistoran say VA1, VA2 also record all the insertion and / or pulling forces from the Steckhistern and other spring forces.
  • the softenable adhesive LI may have a different melting point than the adhesive L2.
  • the adhesive LI is a low melting solder.
  • the varistor contacts VK1, VK2 are preferably fastened with a solder.
  • the melting point of the solder of the varistor contacts is higher than the melting point of the adhesive of the separable varistor terminal VA1.
  • a varistor V already with a separation unit AE and / or a housing (comprising the separation unit AE and a lid D) and / or one or more varistor contacts VKL, VK2 and / or one or more varistor VA1, VA2 as an assembly to provide.
  • the invention thus enables a concept for contacting a varistor V by means of preferably stamped and bent parts (varistor connections, Varsitortivee), which can serve as Steckhister (eg lower portion of the Varistoran Why VA1, VA2 in Figure 2) of an overvoltage protection connector and a simple and efficient separation system (separation unit AE ) form.
  • varistor connections Varsitortivee
  • Steckheter eg lower portion of the Varistoran say VA1, VA2 in Figure 2
  • separation unit AE separation system
  • the compensation for different varistor variants V e.g. in a different thickness (width d of the varistor, see Figure 1) manifested, can also be done via varistor VA1, VA2.
  • the described housing and manufacturing concept allows a fully automated production. This is favored by the fact that only a few parts are needed.
  • a complete varistor plug-in unit with integrated separation unit of a varistor V, two equal varistor contacts VKL, VK2, two varistor VA1, VA2, the separation unit AE with slide S and energy storage F and the lid D are provided.
  • an adhesive may be provided which fixes the cover D or the separation unit AE on the varistor V or the varistor contacts VK1, VK2. This adhesive can also provide tightness against the varistor so that, if necessary, no plasma penetrates.
  • an adhesive or a formabre mass is applied in a region around the openings Ol and 02, for example in the region of a projection I, or the projection I is formed by the adhesive / the moldable mass itself.
  • a hood H - see figure - which provides an insulatation to the environment, and which surrounds the inner part.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Thermistors And Varistors (AREA)

Abstract

L'invention concerne une unité de séparation (AE) pour une varistance (V), la varistance (V) comportant une premier contact de varistance (VK1) et un deuxième contact de varistance (VK2). Le dispositif de séparation (AE) fournit un recouvrement de type couvercle du premier contact de varistance (VK1), le recouvrement de type couvercle comporte une ouverture (O1) servant à établir un contact avec le premier contact de varistance (VK1). Dans l'état monté, une borne de varistance (VA1) soumise à l'action d'une force est contactée avec le premier contact de varistance (VK1) à travers l'ouverture (O1) de type couvercle au moyen d'un produit adhésif (L1) pouvant ramollir par voie thermique. Dans le cas du ramollissement thermique, la borne de varistance (VA1) soumise à l'action d'une force est déplacée de manière à s'éloigner de l'ouverture (O1). L'unité de séparation (AE) comporte par ailleurs un coulisseau (S) soumis à l'action d'une force. Si la borne de varistance (VA1) soumise à l'action d'une force est déplacée avec éloignement, le coulisseau (S) soumis à l'action d'une force ferme l'ouverture (O1) dans le recouvrement de type couvercle.
PCT/EP2018/063055 2017-05-19 2018-05-18 Unité de séparation pour une varistance WO2018211058A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201880032740.XA CN110678941A (zh) 2017-05-19 2018-05-18 一种压敏电阻隔离装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017208571.1A DE102017208571A1 (de) 2017-05-19 2017-05-19 Abtrenneinheit für einen Varistor
DE102017208571.1 2017-05-19

Publications (1)

Publication Number Publication Date
WO2018211058A1 true WO2018211058A1 (fr) 2018-11-22

Family

ID=62200458

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2018/063055 WO2018211058A1 (fr) 2017-05-19 2018-05-18 Unité de séparation pour une varistance

Country Status (3)

Country Link
CN (1) CN110678941A (fr)
DE (1) DE102017208571A1 (fr)
WO (1) WO2018211058A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113724949B (zh) * 2021-09-06 2022-05-17 四川特锐祥科技股份有限公司 一种贴片热敏电阻器

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1077452A2 (fr) * 1999-08-17 2001-02-21 FERRAZ Société Anonyme Dispositif de protection de circuits
US20090079535A1 (en) * 2007-09-21 2009-03-26 Jeong Tae-Hoon Varistor and varistor apparatus
DE202014103262U1 (de) * 2014-07-15 2014-07-30 Phoenix Contact Gmbh & Co. Kg Überspannungsschutzelement
DE202016102520U1 (de) * 2016-05-11 2016-06-06 Phoenix Contatct GmbH & Co. KG Kostengünstige thermische Abtrennvorrichtung für eine elektrische Komponente
US20170110279A1 (en) * 2014-04-07 2017-04-20 Littelfuse, Inc. Thermal metal oxide varistor circuit protection device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009035060A1 (de) * 2009-07-28 2011-02-03 Phoenix Contact Gmbh & Co. Kg Überspannungschutzelement
SI23303A (sl) * 2010-02-19 2011-08-31 ISKRA ZAŠČITE d.o.o. Prenapetostni odklopnik z rotacijskim diskom in elektronskim sklopom za izboljšanje zanesljivosti delovanja
FR2958787B1 (fr) * 2010-04-09 2012-05-11 Abb France Dispositif de protection contre les surtensions a deconnecteurs thermiques dedoubles
FR2958788B1 (fr) * 2010-04-09 2015-01-30 Abb France Varistance comprenant une electrode avec une partie en saillie formant pole et parafoudre comprenant une telle varistance
CN201733089U (zh) * 2010-08-04 2011-02-02 浙江雷泰电气有限公司 电涌保护器
US8699198B2 (en) * 2010-08-27 2014-04-15 Cooper Technologies Company Compact transient voltage surge suppression device
SI23749A (sl) * 2011-05-11 2012-11-30 ISKRA@ZAŠČITE@d@o@o Redudančni prenapetostni odklopnik z rotacijskimdiskom in z dodanim elektronskim sklopom za zagotavljanje podaljšanja življenjske dobe prenapetostnega gradnika

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1077452A2 (fr) * 1999-08-17 2001-02-21 FERRAZ Société Anonyme Dispositif de protection de circuits
US20090079535A1 (en) * 2007-09-21 2009-03-26 Jeong Tae-Hoon Varistor and varistor apparatus
US20170110279A1 (en) * 2014-04-07 2017-04-20 Littelfuse, Inc. Thermal metal oxide varistor circuit protection device
DE202014103262U1 (de) * 2014-07-15 2014-07-30 Phoenix Contact Gmbh & Co. Kg Überspannungsschutzelement
DE202016102520U1 (de) * 2016-05-11 2016-06-06 Phoenix Contatct GmbH & Co. KG Kostengünstige thermische Abtrennvorrichtung für eine elektrische Komponente

Also Published As

Publication number Publication date
DE102017208571A1 (de) 2018-11-22
CN110678941A (zh) 2020-01-10

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