JPH08250304A - Overvoltage and overcurrent protective device - Google Patents
Overvoltage and overcurrent protective deviceInfo
- Publication number
- JPH08250304A JPH08250304A JP4938395A JP4938395A JPH08250304A JP H08250304 A JPH08250304 A JP H08250304A JP 4938395 A JP4938395 A JP 4938395A JP 4938395 A JP4938395 A JP 4938395A JP H08250304 A JPH08250304 A JP H08250304A
- Authority
- JP
- Japan
- Prior art keywords
- lead wire
- ptc thermistor
- overvoltage
- soldered
- thermistor
- 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.)
- Pending
Links
Classifications
-
- 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
- H01C1/1406—Terminals or electrodes formed on resistive elements having positive temperature coefficient
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0213—Electrical arrangements not otherwise provided for
- H05K1/0263—High current adaptations, e.g. printed high current conductors or using auxiliary non-printed means; Fine and coarse circuit patterns on one circuit board
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
- H05K3/341—Surface mounted components
- H05K3/3421—Leaded components
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、電子機器例えば電話器
の電子交換機等の過電流・過電圧保護装置に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an overcurrent / overvoltage protection device for electronic equipment such as an electronic exchange of a telephone.
【０００２】[0002]
【従来の技術】電話器の電子交換機は，結線のショート
を保護するために正特性サーミスタが用いられている。
一方これら交換機は雷サージによる機器の保護を行うた
め、例えばＵＬ１４５９に定められた過電圧・過電流に
よる保護も必要とされている。2. Description of the Related Art An electronic exchange for a telephone uses a positive temperature coefficient thermistor to protect a short circuit in a wire connection.
On the other hand, since these exchanges protect equipment from lightning surges, they also require protection from overvoltage and overcurrent, for example, specified in UL1459.
【０００３】ＵＬ１４５９では、例えば６００Ｖ ４０
Ａ １．５秒、６００Ｖ ７Ａ ５秒、６００Ｖ ２．
２Ａ ３０分の過電圧・過電流に耐えることが必要とさ
れており、これらの過電圧、過電流に耐えるためには正
特性サーミスタの素子寸法が大きくなりすぎ、素子寸法
を小さくした場合、正特性サーミスタは過電圧・過電流
の電力で焼損するという致命的な欠点があった。In UL1459, for example, 600V 40
A 1.5 seconds, 600V 7A 5 seconds, 600V 2.
It is required to withstand overvoltage / overcurrent for 2A 30 minutes, and in order to withstand these overvoltage and overcurrent, the element size of the positive temperature coefficient thermistor becomes too large. Had a fatal drawback of being burned by overvoltage and overcurrent power.
【０００４】[0004]
【発明が解決しようとする課題】本発明はこれらの過電
圧・過電流が加わった場合でも正特性サーミスタを小型
化出来、且つ過電圧・過電流が加わっても焼損せず、機
器を保護することを目的とするものである。SUMMARY OF THE INVENTION The present invention aims to protect a device by making it possible to miniaturize a positive temperature coefficient thermistor even when these overvoltages / overcurrents are applied, and not burning even if overvoltages / overcurrents are applied. It is intended.
【０００５】[0005]
【課題を解決するための手段】即ち、正特性サーミスタ
素子にバネ性を有するリード線を半田付けし、且つ正特
性サーミスタとリード線とが離間するようにリード線の
バネ性で付勢した状態で当該リード線の他端を基板に半
田付けし、正特性サーミスタが自己発熱して正特性サー
ミスタとリード線を接続した半田を融解させ、リード線
のバネで正特性サーミスタとリード線とが離間すること
により回路を遮断する過電圧・過電流保護装置を提供す
るものである。That is, a state in which a lead wire having a spring property is soldered to a PTC thermistor element, and the PTC thermistor and the lead wire are urged by the spring property of the lead wire so as to be separated from each other. Then, solder the other end of the lead wire to the board, the PTC thermistor self-heats and melts the solder that connects the PTC thermistor and the lead wire, and separates the PTC thermistor and the lead wire with the spring of the lead wire. The present invention provides an overvoltage / overcurrent protection device that shuts off the circuit by doing so.
【０００６】あるいは又、正特性サーミスタ素子に半田
付されたリード線にバネ材を半田付けし、且つリード線
と正特性サーミスタとが離間するようにバネ性を付勢し
た状態でバネ材の他端を基板に半田付けし、正特性サー
ミスタに過電圧・過電流が加わった場合、正特性サーミ
スタが自己発熱して正特性サーミスタとリード線を接続
した半田を融解させ、バネ材のバネ力で正特性サーミス
タとリード線とが離間することにより回路を遮断するこ
とを特徴とする過電圧・過電流保護装置を提供するもの
である。Alternatively, the spring material is soldered to the lead wire soldered to the PTC thermistor element, and the spring property is biased so that the lead wire and the PTC thermistor are separated from each other. When the end is soldered to the board and the overvoltage / overcurrent is applied to the PTC thermistor, the PTC thermistor self-heats and the solder that connects the PTC thermistor and the lead wire is melted, and the spring force of the spring material corrects it. The present invention provides an overvoltage / overcurrent protection device characterized in that a circuit is cut off by separating a characteristic thermistor and a lead wire.
【０００７】[0007]
【作用】上記の構造とすることにより、正特性サーミス
タ素子は従来は２０φ×４．０ｔｍｍの大きさであった
ものが、７φ×２．５ｔｍｍの大きさとすることが可能
となり、装置も小型化出来、コストも低減することが可
能となった。With the above structure, the PTC thermistor element, which has been conventionally 20φ × 4.0tmm in size, can be made 7φ × 2.5tmm in size, and the device can be downsized. It was possible and the cost could be reduced.
【０００８】[0008]
【実施例】本発明の実施例を図１に基づき詳述する。正
特性サーミスタ１（７φ×２．５ｔｍｍ、キュリー温度
１２０℃、抵抗値１２Ω）の両面にニッケルメッキ及び
錫メッキ（図示せず）により、電極を形成し、その電極
にバネ性を有する０．５φの黄銅線２，３を錫−鉛共晶
半田４（融点１８３℃）で半田付けした。Embodiment An embodiment of the present invention will be described in detail with reference to FIG. Electrodes are formed on both sides of the positive temperature coefficient thermistor 1 (7φ × 2.5tmm, Curie temperature 120 ° C., resistance value 12Ω) by nickel plating and tin plating (not shown), and the electrode has a spring property of 0.5φ. The brass wires 2 and 3 were soldered with tin-lead eutectic solder 4 (melting point 183 ° C.).
【０００９】リード線の他端を基板５に半田付けするに
際し、リード線２は、リード線のバネ力で正特性サーミ
スタ素子を離間するように付勢した状態で基板５に半田
付けした。このリード線３，２間に６００Ｖ ４０Ａ、
６００Ｖ ７Ａ、６００Ｖ ２．２Ａの電流を流したと
ころ、正特性サーミスタに電流が流れて自己発熱して半
田４の融点である１８３℃を超え、それぞれ０．０２
秒、１．０秒、２．３秒で図３の通り、リード線が正特
性サーミスタと離間し、遮断した。When the other end of the lead wire is soldered to the substrate 5, the lead wire 2 is soldered to the substrate 5 while being biased by the spring force of the lead wire so as to separate the positive temperature coefficient thermistor element. 600V 40A between the lead wires 3 and 2,
When a current of 600V 7A, 600V 2.2A was passed, the current flowed through the positive temperature coefficient thermistor and self-heated, exceeding the melting point of the solder 4, 183 ° C., 0.02 each.
As shown in FIG. 3, the lead wire was separated from the positive temperature coefficient thermistor at 1.0 second, 2.3 seconds, and was cut off.
【００１０】また本発明の他の実施例を図２に示す。正
特性サーミスタ１（７φ×２．５ｔｍｍ、キュリー温度
９０℃、抵抗値１２Ω）の両面にニッケルメッキ及び錫
メッキ（図示せず）電極を形成し、その電極に０．５φ
のＣｐ線６．７を錫−鉛共晶半田４（融点１８３℃）で
半田付けした。Another embodiment of the present invention is shown in FIG. Nickel-plated and tin-plated (not shown) electrodes are formed on both sides of the positive temperature coefficient thermistor 1 (7φ × 2.5tmm, Curie temperature 90 ° C., resistance value 12Ω), and 0.5φ is formed on the electrodes.
Cp wire 6.7 was soldered with tin-lead eutectic solder 4 (melting point 183 ° C.).
【００１１】リード線６の他端を基板５に半田付けし、
リード線７の他端をバネ材８（リン青銅 幅２．０ｍｍ
厚み１．０ｔｍｍ）で半田付けし、バネ材８をリード
線７と正特性サーミスタとが離間するよう予め付勢した
状態でバネ材８の他端を基板５に半田付けした。リード
線６、バネ材８の間に６００Ｖ ４０Ａ、６００Ｖ ７
Ａ、６００Ｖ２．２Ａの電流を流したところ、０．０５
秒、１．６秒，３．８秒で電流を遮断した。The other end of the lead wire 6 is soldered to the substrate 5,
Attach the other end of the lead wire 7 to the spring material 8 (phosphor bronze width 2.0 mm
The spring material 8 was soldered with a thickness of 1.0 tmm, and the other end of the spring material 8 was soldered to the substrate 5 in a state where the spring material 8 was biased in advance so that the lead wire 7 and the PTC thermistor were separated from each other. 600V 40A, 600V 7 between the lead wire 6 and the spring material 8
A, when a current of 600V 2.2A was passed, it was 0.05
The electric current was cut off after 1 second, 1.6 seconds and 3.8 seconds.
【００１２】[0012]
【発明の効果】以上、詳述するように、正特性サーミス
タを小型化し、低コストで高電圧、大電流を素早く遮断
する過電圧、過電流保護装置を提供することが可能とな
った。尚、実施例ではバネ材として黄銅やリン青銅を用
いたが、これらのバネ材に限定されるものではないこと
はいうまでもない。また、用途として、ＰＢＸ（電子交
換機）を例として説明したが、この用途に制限されるも
のではなく、過電圧、過電流保護用途として広く応用出
来るものである。As described above in detail, it has become possible to provide an overvoltage and overcurrent protection device which can reduce the size of a positive temperature coefficient thermistor and quickly cut off a high voltage and a large current at low cost. Although brass and phosphor bronze are used as the spring material in the embodiment, it goes without saying that the spring material is not limited to these. Further, the PBX (Electronic Exchange) has been described as an example of the application, but the application is not limited to this application and can be widely applied as an overvoltage / overcurrent protection application.
【図１】図１は本発明の一実施例の断面図である。FIG. 1 is a sectional view of an embodiment of the present invention.
【図２】他の実施例の断面図である。FIG. 2 is a cross-sectional view of another embodiment.
【図３】図３は図１の実施例で、リード線が正特性サー
ミスタから離間した状態を示す。FIG. 3 shows the embodiment of FIG. 1 in which the lead wires are spaced apart from the positive temperature coefficient thermistor.
１ 正特性サーミスタ素子 ２ 黄銅線 ３ 黄銅線 ４ 半田 ５ 基板 ６ Ｃｐ線 ７ Ｃｐ線 ８ リン青銅板 1 Positive Characteristic Thermistor Element 2 Brass Wire 3 Brass Wire 4 Solder 5 Substrate 6 Cp Line 7 Cp Line 8 Phosphor Bronze Plate
Claims (2)
リード線を半田付けし、且つ正特性サーミスタとリード
線とが離間するようにリード線のバネ性を付勢した状態
で当該リード線の他端を基板に半田付けし、正特性サー
ミスタに過電圧・過電流が加わった場合、正特性サーミ
スタが自己発熱して正特性サーミスタとリード線を接続
した半田を融解させ、リード線のバネ力で正特性サーミ
スタとリード線とが離間することにより回路を遮断する
ことを特徴とする過電圧・過電流保護装置。1. A lead wire having a spring property is soldered to the PTC thermistor element, and the spring property of the lead wire is biased so that the PTC thermistor and the lead wire are separated from each other. When the end is soldered to the board and the overvoltage / overcurrent is applied to the PTC thermistor, the PTC thermistor self-heats and the solder connecting the PTC thermistor and the lead wire is melted, and the spring force of the lead wire corrects it. An overvoltage / overcurrent protection device characterized in that the circuit is interrupted by separating the characteristic thermistor and the lead wire.
ード線にバネ材を半田付けし、且つリード線と正特性サ
ーミスタとが離間するようにバネ性を付勢した状態でバ
ネ材の他端を基板に半田付けし、正特性サーミスタに過
電圧・過電流が加わった場合、正特性サーミスタが自己
発熱して正特性サーミスタとリード線を接続した半田を
融解させ、バネ材のバネ力で正特性サーミスタとリード
線とが離間することにより回路を遮断することを特徴と
する過電圧・過電流保護装置。2. The other end of the spring material in a state where the spring material is soldered to the lead wire soldered to the PTC thermistor element and the spring property is urged so that the lead wire and the PTC thermistor are separated from each other. If the overvoltage / overcurrent is applied to the PTC thermistor by soldering to the board, the PTC thermistor self-heats and melts the solder connecting the PTC thermistor and the lead wire, and the positive force of the spring material An overvoltage / overcurrent protection device characterized in that the circuit is interrupted by separating the thermistor and the lead wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4938395A JPH08250304A (en) | 1995-03-09 | 1995-03-09 | Overvoltage and overcurrent protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4938395A JPH08250304A (en) | 1995-03-09 | 1995-03-09 | Overvoltage and overcurrent protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08250304A true JPH08250304A (en) | 1996-09-27 |
Family
ID=12829506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4938395A Pending JPH08250304A (en) | 1995-03-09 | 1995-03-09 | Overvoltage and overcurrent protective device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08250304A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998031203A1 (en) * | 1997-01-11 | 1998-07-16 | W.J. Furse & Company Limited | Improvements in or relating to thermal trip arrangements |
| US6196873B1 (en) | 1998-06-10 | 2001-03-06 | Yazaki Corporation | Waterproof connector |
| US6445277B1 (en) | 1999-06-22 | 2002-09-03 | Yazaki Corporation | Safety device of electric circuit and process for producing the same |
| WO2002091398A2 (en) * | 2001-05-08 | 2002-11-14 | Tyco Electronics Raychem K. K | Circuit protection arrangement |
| US8058966B2 (en) | 2003-06-23 | 2011-11-15 | Hiroyuki Koyama | PTC thermistor and method for protecting circuit |
| JP2021517739A (en) * | 2018-04-04 | 2021-07-26 | ティーディーケイ・エレクトロニクス・アクチェンゲゼルシャフトＴｄｋ Ｅｌｅｃｔｒｏｎｉｃｓ Ａｇ | Thermal protection device |
-
1995
- 1995-03-09 JP JP4938395A patent/JPH08250304A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998031203A1 (en) * | 1997-01-11 | 1998-07-16 | W.J. Furse & Company Limited | Improvements in or relating to thermal trip arrangements |
| US6196873B1 (en) | 1998-06-10 | 2001-03-06 | Yazaki Corporation | Waterproof connector |
| US6445277B1 (en) | 1999-06-22 | 2002-09-03 | Yazaki Corporation | Safety device of electric circuit and process for producing the same |
| WO2002091398A2 (en) * | 2001-05-08 | 2002-11-14 | Tyco Electronics Raychem K. K | Circuit protection arrangement |
| WO2002091398A3 (en) * | 2001-05-08 | 2003-10-30 | Tyco Electronics Raychem Kk | Circuit protection arrangement |
| US8058966B2 (en) | 2003-06-23 | 2011-11-15 | Hiroyuki Koyama | PTC thermistor and method for protecting circuit |
| JP2021517739A (en) * | 2018-04-04 | 2021-07-26 | ティーディーケイ・エレクトロニクス・アクチェンゲゼルシャフトＴｄｋ Ｅｌｅｃｔｒｏｎｉｃｓ Ａｇ | Thermal protection device |
| US11482354B2 (en) | 2018-04-04 | 2022-10-25 | Tdk Electronics Ag | Thermal protection device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4876621A (en) | Line protector for a communications circuit | |
| US5311164A (en) | Surge absorber | |
| US10148079B2 (en) | Surge protection device | |
| CA2454556A1 (en) | Surge arrester | |
| US6606232B1 (en) | Failsafe surge protector having reduced part count | |
| JP2791979B2 (en) | Protection circuit to protect against overvoltage and overcurrent | |
| JP3119124B2 (en) | Electronic parts for communication line protection | |
| JP2005513727A (en) | Spring clip, overvoltage lightning arrester provided with the spring clip, and apparatus for the overvoltage lightning arrester | |
| JPH08250304A (en) | Overvoltage and overcurrent protective device | |
| JP3993256B2 (en) | Overvoltage / overcurrent protection device | |
| JP2616174B2 (en) | Overcurrent protection components | |
| CA2051564C (en) | Junction box with protection function to protect from overvoltage and overcurrent | |
| JP3853418B2 (en) | Overvoltage / overcurrent protection device | |
| JPH0973848A (en) | Overvoltage overcurrent protection device | |
| JP3853419B2 (en) | Overvoltage / overcurrent protection device | |
| CN213425414U (en) | Overvoltage protection element and component assembly for an overvoltage protection element | |
| JP3088588U (en) | Fuse composite varistor | |
| KR960005326B1 (en) | Surge absorbing element | |
| JPH0139435Y2 (en) | ||
| WO1992002978A1 (en) | Surge-absorbing element for protection against overvoltage and overcurrent | |
| JPH02267902A (en) | Surge absorber | |
| JPH0810644B2 (en) | Overcurrent protection components | |
| JPS60148337A (en) | Composite protective element | |
| JPH01176686A (en) | Surge absorber | |
| JP2522901Y2 (en) | Positive thermistor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20040225 |
|
| A131 | Notification of reasons for refusal |
Effective date: 20040308 Free format text: JAPANESE INTERMEDIATE CODE: A131 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20040712 |