WO1992002978A1 - Element coupe-circuit servant de protection contre les surtensions et les courants de surcharge - Google Patents

Element coupe-circuit servant de protection contre les surtensions et les courants de surcharge Download PDF

Info

Publication number
WO1992002978A1
WO1992002978A1 PCT/JP1990/001006 JP9001006W WO9202978A1 WO 1992002978 A1 WO1992002978 A1 WO 1992002978A1 JP 9001006 W JP9001006 W JP 9001006W WO 9202978 A1 WO9202978 A1 WO 9202978A1
Authority
WO
WIPO (PCT)
Prior art keywords
absorbing element
surge absorbing
surge
overvoltage
metal wire
Prior art date
Application number
PCT/JP1990/001006
Other languages
English (en)
Japanese (ja)
Inventor
Naruo Yoshioka
Takashi Shibayama
Hironori Miyahara
Hisao Ibukuro
Takaaki Itou
Original Assignee
Mitsubishi Mining And Cement Co. Ltd.
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 Mitsubishi Mining And Cement Co. Ltd. filed Critical Mitsubishi Mining And Cement Co. Ltd.
Priority to CA002067202A priority Critical patent/CA2067202A1/fr
Priority to EP90911702A priority patent/EP0495102B1/fr
Priority to DE69025193T priority patent/DE69025193T2/de
Priority to PCT/JP1990/001006 priority patent/WO1992002978A1/fr
Publication of WO1992002978A1 publication Critical patent/WO1992002978A1/fr

Links

Classifications

    • 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
    • H01T4/00—Overvoltage arresters using spark gaps
    • H01T4/10—Overvoltage arresters using spark gaps having a single gap or a plurality of gaps in parallel
    • H01T4/12—Overvoltage arresters using spark gaps having a single gap or a plurality of gaps in parallel hermetically sealed
    • 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

Definitions

  • the present invention relates to a surge absorbing element having a structure capable of preventing a circuit board from being ignited or overheated when an overvoltage or overcurrent is applied to a circuit.
  • the surge absorbing element protects equipment connected to a telephone line, such as a telephone, a facsimile, and a telephone exchange, from surges such as a lightning surge. Furthermore, the over-voltage over-current protection function is designed to protect the surge absorbing element (circuit) from contact with the surge absorbing element when over-voltage over-current caused by mixing with the power supply etc. is continuously applied.
  • the low-melting metal wire provided in series is melted by heat and broken, and the surge absorbing element and equipment are protected from overvoltage and overcurrent.
  • a general surge absorption element is a gap or microgap type surge absorption element, which is disclosed in Japanese Patent Publication No. 63-25026. Further, the present inventors have disclosed in Japanese Patent Application Laid-Open No.
  • a surge absorbing element for overvoltage and overcurrent protection which has a structure in which a melting point metal wire is attached, and the low melting point metal wire and the surge absorbing element are covered with an inorganic material jacket.
  • a thermal fuse or a low-melting metal wire is attached to the surface of a gap-type or micro gap-type surge absorbing element, and the surge absorbing element and the equipment are mounted. Etc. are protected.
  • the temperature fuse or the low-melting metal wire is blown by the heat generated on the outer surface of the surge absorbing element, thereby opening the circuit. It is. Therefore, the conventional overvoltage
  • the surge absorption element of the current protection function uses a temperature fuse or a low-melting metal wire to open the circuit. To open the circuit, the thermal fuse or low-melting metal wire is melted and completely blown. Must. In other words, it took a considerable time from melting to complete melting.
  • the external lead terminals are three or four terminals, of which one or two terminals are It has a drawback that it is linear, the lead wire position is unstable, and it is difficult to mount it on a board. Also, in the surge absorbing element having this structure, the cover glass is exposed, so that when mounted on a substrate, the cover glass is in direct contact with the substrate. For this reason, in the surge absorbing element of this overvoltage overcurrent protection, when continuous overvoltage overcurrent is mixed, the surge absorbing element inside the cover glass generates heat, and the low melting point metal wire is blown by heat. However, it has a disadvantage that the heat of the cover glass has a bad thermal effect (heat generation, smoke generation) on the mounted substrate. Disclosure of the invention
  • the present inventors have conducted research on shortening the time until the circuit is opened when the overvoltage and overcurrent are mixed into the surge absorbing element circuit, and as a result, the rigidity with elastic deformation has been found. From a new point of view of using a high metal, such a highly rigid metal wire is elastically deformed and the low melting point metal is used to form the electrode or lead wire of the surge absorbing element. The low-melting metal used for fixing is melted by the heat generated by the overvoltage and overcurrent applied to the fixed part, and the fixed rigid metal wire tries to return to its original elastic deformation. Abruptly and quickly leave the fixed point.
  • a surge absorption device with a quick reactive overvoltage and overcurrent protection function can be obtained, thereby reducing surges.
  • the safety of the absorbing element is improved.
  • the high-rigidity metal wire has elasticity. Therefore, by forcibly returning to the original state, it was possible to open the circuit when the low-melting-point metal melted, enabling quick circuit opening operation. It is.
  • surge absorbing element means “a gap or a micro gap is provided in a part of a conductive thin film, and if an overvoltage greater than a critical value is applied during the gap, Discharges through the loop or microgap, creating a shunt for the overvoltages and overcurrents and avoiding the overvoltages and overloads. Or those with a micro gap are confined in a gas-filled space. Therefore, they are usually called gap type or micro gap type surge absorbing elements.
  • the term “surge absorbing element having an overvoltage overcurrent protection function” means "a continuous overvoltage overcurrent is applied to the above surge absorbing element, causing heat generation and ignition.
  • a resin base preferably a base plate made of a resin such as an epoxy resin or a PBT resin, is provided in advance as a substrate of the surge absorbing element, and the base plate is formed on the resin base plate. , About 0.5 ⁇
  • Each lead wire and the elastically deformed metal wire having high rigidity have a structure in which a force crimp is fixed to the lead bin by spot welding or the like.
  • the structure is such that the work efficiency can be improved when mounting the surge absorbing element.
  • FIG. 1 is a schematic sectional view showing the structure of a surge absorbing element for overvoltage / overcurrent protection of the present invention.
  • FIG. 2 is a schematic circuit diagram of a surge absorbing element for overvoltage and overcurrent protection according to the present invention.
  • BEST MODE FOR CARRYING OUT THE INVENTION FIG. 1 shows a schematic sectional view of a surge absorbing element for overvoltage / overcurrent protection of the present invention.
  • the surge absorbing element 9 a resin base 10 for mounting the same, and three lead pins 11A, 11B, and 11C inserted into the resin base are provided.
  • lead wires 12 A and 12 B to the surge absorbing element, and the elastically deformed phosphor bronze wire 14 is fixed to the surge absorbing element terminal with solder 15. It is entirely made of resin and is entirely covered with a resin case.
  • the surge absorbing element having an overvoltage / overcurrent protection function uses a high-rigidity metal wire having elastic deformation and a low-melting-point metal at a terminal or a lead wire of the surge absorbing element.
  • the rigid metal wire By mounting, if the surge absorbing element generates heat due to overvoltage and overcurrent, the rigid metal wire is mechanically returned to its original position when the low melting metal wire is melted, thereby speeding up the circuit. Open to the public. In other words, by simply melting and fusing the low melting point metal itself, not only can the circuit be opened, but also the mechanical force of a highly rigid metal wire having elastic deformation is forcibly applied. It has the effect of opening the circuit.
  • the surge absorbing element having an overvoltage / overcurrent protection function can be used for a device connected to a telephone line such as a telephone, a facsimile, a telephone exchange, etc. Can be used to prevent harm.
  • a telephone line such as a telephone, a facsimile, a telephone exchange, etc.
  • the present invention will be described in detail below with reference to examples, but the present invention is not limited thereby.
  • the lead pins 11A, 11B, and 11C are driven into the resin base 10, and the micro gap type surge absorbing element 9 (DC discharge starting voltage 300 V) is further placed thereon.
  • One lead wire portion 12A is bent as shown in the figure, and the other lead wire portion 12B is respectively bent by caulking 13A and 13B.
  • Mode pin 1 1 A, 1 1 New paper Electrically connect to B and secure as shown.
  • the Lin bronze wire 14 was similarly connected to the lead pin 11 C using a caulking 13 C, and then the Lin bronze wire at the other end was used.
  • the wire 14 is forcibly elastically deformed and bent, and as shown in the figure, the elastic wire is elastically deformed, and the connection portion of the lead wire portion 12 A of the micro gap type surge absorbing element 9 is That is, as shown in the figure, a solder 15 is used as a low melting point metal and electrically connected to and fixed to a terminal portion of the surge absorbing element. Further, the entirety is surrounded by a resin cover 16 as shown in the figure. In this way, a surge absorbing element having a three-terminal type overvoltage / overcurrent protection function having the structure shown in the figure is obtained.
  • the surge absorbing element having the overvoltage / overcurrent protection function having the above-described structure is connected, for example, as shown in the schematic circuit diagram of FIG. 2, that is, in order to protect the device 2 from surges or the like.
  • a surge absorbing element having an overvoltage / overcurrent protection function of the present invention which is composed of a black gap type surge absorbing element 9 and a rigid metal wire 14, is connected to the telephone line 3.
  • the terminals 11A, 11B, and 11C correspond to the positions shown in FIG.
  • a load test for overvoltage and overcurrent was performed on the surge absorbing element with the above structure, and a load test was also performed on a comparative product to compare. Table 1 shows the results.
  • the comparative product means that the structure shown above, that is, the temperature fuse is provided on the surface of a gap-type or micro-gap-type surge absorption element, and is melted. With this, it has an overvoltage and overcurrent protection function. Table 1
  • the surge absorbing element having an overvoltage / overcurrent protection function of the present invention uses a high-rigidity metal wire having elastic deformation, so that a circuit can be manufactured in a shorter time than a comparative product.
  • a technical effect of providing an overvoltage overcurrent protection function for quickly shutting off an overvoltage current can be obtained.
  • the over-voltage over-current protection function has a structure that quickly opens the circuit of the surge absorbing element by mechanically returning the highly rigid metal wire when over-voltage over current is applied. And a surge absorbing element having the same.
  • the surge absorbing element having an overvoltage / overcurrent protection function of the present invention can provide surge and overvoltage / overcurrent protection for equipment connected to a telephone line such as a telephone, a facsimile, and a telephone exchange. Can be used to prevent damage to cargo.

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Fuses (AREA)

Abstract

L'invention se rapporte à un élément coupe-circuit, qui possède une fonction de protection contre les surtensions et les courants de décharge et dans lequel un fil métallique déformé mécaniquement et élastiquement et ayant une grande rigidité est joint par un métal à bas point de fusion à une borne ou à un fil conducteur d'un élément coupe-circuit du type à entrefer ou un micro-entrefer. Lorsque l'élément coupe-circuit produit de la chaleur en raison d'une surtension ou d'un courant de surcharge, le métal à bas point de fusion fond, le fil métallique rigide déformé élastiquement se sépare de la borne ou du fil conducteur et la connection est interrompue. Le fil métallique rigide est connecté en série avec l'élément coupe-circuit et avec un dispositif ou un circuit devant être protégé.
PCT/JP1990/001006 1990-08-07 1990-08-07 Element coupe-circuit servant de protection contre les surtensions et les courants de surcharge WO1992002978A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CA002067202A CA2067202A1 (fr) 1990-08-07 1990-08-07 Dispositif de protection contre les surtensions et les surintensites
EP90911702A EP0495102B1 (fr) 1990-08-07 1990-08-07 Element coupe-circuit servant de protection contre les surtensions et les courants de surcharge
DE69025193T DE69025193T2 (de) 1990-08-07 1990-08-07 Ableiterelement zum schutz gegen überspannung und überstrom
PCT/JP1990/001006 WO1992002978A1 (fr) 1990-08-07 1990-08-07 Element coupe-circuit servant de protection contre les surtensions et les courants de surcharge

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA002067202A CA2067202A1 (fr) 1990-08-07 1990-08-07 Dispositif de protection contre les surtensions et les surintensites
PCT/JP1990/001006 WO1992002978A1 (fr) 1990-08-07 1990-08-07 Element coupe-circuit servant de protection contre les surtensions et les courants de surcharge

Publications (1)

Publication Number Publication Date
WO1992002978A1 true WO1992002978A1 (fr) 1992-02-20

Family

ID=25675103

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1990/001006 WO1992002978A1 (fr) 1990-08-07 1990-08-07 Element coupe-circuit servant de protection contre les surtensions et les courants de surcharge

Country Status (2)

Country Link
CA (1) CA2067202A1 (fr)
WO (1) WO1992002978A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW201740605A (zh) * 2017-01-23 2017-11-16 Pao-Hsuan Chen 保護元件與二次電池包
TW201740598A (zh) * 2017-04-06 2017-11-16 Pao-Hsuan Chen 電池包及其保護元件

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6311022A (ja) * 1986-07-01 1988-01-18 三菱鉱業セメント株式会社 過電圧過電流保護のサ−ジ吸収素子
JPH01176686A (ja) * 1987-12-29 1989-07-13 Matsushita Electric Ind Co Ltd サージ吸収器

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6311022A (ja) * 1986-07-01 1988-01-18 三菱鉱業セメント株式会社 過電圧過電流保護のサ−ジ吸収素子
JPH01176686A (ja) * 1987-12-29 1989-07-13 Matsushita Electric Ind Co Ltd サージ吸収器

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP0495102A4 *

Also Published As

Publication number Publication date
CA2067202A1 (fr) 1992-02-08

Similar Documents

Publication Publication Date Title
US6795290B2 (en) Surge arrestor
KR970000117B1 (ko) 서어지흡수기
TWI405234B (zh) 整合式熔絲裝置及整合式電路保護裝置
US10148079B2 (en) Surge protection device
JPH0748929B2 (ja) サージ吸収器
JP5959447B2 (ja) サージ防護装置
US6606232B1 (en) Failsafe surge protector having reduced part count
JP2791979B2 (ja) 過電圧過電流から保護する保護回路
WO1992002978A1 (fr) Element coupe-circuit servant de protection contre les surtensions et les courants de surcharge
JPH05299206A (ja) 過電圧保護部品
JPH08250304A (ja) 過電圧・過電流保護装置
KR960005326B1 (ko) 과전압 과전류 보호의 서어지 흡수소자
JP2876534B2 (ja) 過電圧過電流保護のサージ吸収装置
JP3164781B2 (ja) 放電型サージ吸収素子
JPH09306317A (ja) 過電圧・過電流保護装置
WO1992006524A1 (fr) Dispositif limiteur protegeant un circuit contre une surtension ou une surintensite de courant
JPH07184319A (ja) 保護回路
KR960013402B1 (ko) 써어지 흡수소자에 의한 과전압 과전류 보호회로부품
JP2594861B2 (ja) 保安機構付サージ吸収素子
JPH06188106A (ja) バリスタ機能付アレスタ及び、該アレスタを用いた保安器
JPH04244732A (ja) サージ吸収回路及びこの回路からなるサージ吸収器
EP0495102B1 (fr) Element coupe-circuit servant de protection contre les surtensions et les courants de surcharge
JPH01176686A (ja) サージ吸収器
JPS6399725A (ja) 過電圧過電流保護のサ−ジ吸収素子
US5442509A (en) Protection structure for surge absorbing element

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): CA JP US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB IT LU NL SE

WWE Wipo information: entry into national phase

Ref document number: 1990911702

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2067202

Country of ref document: CA

WWP Wipo information: published in national office

Ref document number: 1990911702

Country of ref document: EP

WWG Wipo information: grant in national office

Ref document number: 1990911702

Country of ref document: EP