JPH07120568B2 - PTC thermistor device - Google Patents
PTC thermistor deviceInfo
- Publication number
- JPH07120568B2 JPH07120568B2 JP60168256A JP16825685A JPH07120568B2 JP H07120568 B2 JPH07120568 B2 JP H07120568B2 JP 60168256 A JP60168256 A JP 60168256A JP 16825685 A JP16825685 A JP 16825685A JP H07120568 B2 JPH07120568 B2 JP H07120568B2
- Authority
- JP
- Japan
- Prior art keywords
- lead
- electrode
- temperature coefficient
- positive temperature
- coefficient 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.)
- Expired - Lifetime
Links
Landscapes
- Thermistors And Varistors (AREA)
Description
【発明の詳細な説明】 ＜産業上の利用分野＞ 本発明は、正特性サーミスタを発熱源とし、電子蚊取器
等に使用される正特性サーミスタ装置に関し、正特性サ
ーミスタの電極に対接す一対の電極端子の内、一方の電
極端子は、電極対接部と引出端子部とを、引出端子部の
方向と交叉する方向に配設された狭幅部によって連続さ
せ、この狭幅部を過電流溶断部とすることにより、小さ
い電流で確実に、かつ、素早く溶断できるようにして、
過電流保護作用を向上させ、安全性を高めたものであ
る。Description: TECHNICAL FIELD The present invention relates to a positive temperature coefficient thermistor device for use in an electronic mosquito catcher or the like, which uses a positive temperature coefficient thermistor as a heat source, and contacts a positive temperature coefficient thermistor electrode. Of the pair of electrode terminals, one of the electrode terminals is such that the electrode pair contact portion and the lead terminal portion are connected by a narrow portion arranged in a direction intersecting the direction of the lead terminal portion, and this narrow portion is By using the overcurrent fusing part, it is possible to surely and quickly blow with a small current,
It has improved overcurrent protection and improved safety.
＜従来の技術＞ 従来のこの種の正特性サーミスタ装置は、例えば第５
図、第６図に示すように、アルミナ等の耐熱絶縁材料で
構成されたケース１の凹溝２における底部に弾性電極端
子３を配置し、この電極端子３の上に、厚さ方向の両面
に電極を被着形成した正特性サーミスタ４、平板状電極
端子５及び絶縁板６を順次重ねてゆき、この絶縁板６の
上に重ねられた放熱板７を、電極端子３の弾発力に抗し
つつ、ケース１の方向に押圧し、放熱板７に設けた取付
腕71〜74をケース１の外壁に沿って折曲げることによ
り、全体を弾力的に支持固定した構造となっている。電
極端子３及び５は正特性サーミスタ４の厚さ方向の両面
に被着形成された電極にそれぞれ弾力的に圧接する。<Prior Art> A conventional positive temperature coefficient thermistor device of this type is, for example, the fifth type.
As shown in FIGS. 6A and 6B, elastic electrode terminals 3 are arranged at the bottom of the concave groove 2 of the case 1 made of a heat-resistant insulating material such as alumina, and both surfaces in the thickness direction are placed on the electrode terminals 3. A positive temperature coefficient thermistor 4 having electrodes formed thereon, a plate-shaped electrode terminal 5 and an insulating plate 6 are sequentially stacked, and a heat radiating plate 7 stacked on the insulating plate 6 is applied to the elastic force of the electrode terminal 3. While resisting, the mounting arms 71 to 74 provided on the heat dissipation plate 7 are bent in the direction of the case 1 and bent along the outer wall of the case 1, so that the entire structure is elastically supported and fixed. The electrode terminals 3 and 5 are elastically pressed against electrodes formed on both surfaces of the positive temperature coefficient thermistor 4 in the thickness direction.
前記電極端子３及び５は、正特性サーミスタ４の両端面
に形成された電極に対接する電極対接部31、51に、給電
部となる引出端子部32、52を設けた構造となっていて、
該引出端子部32、52の基部に設けた屈曲部33、53を、ケ
ース１に設けた凹部101、102に嵌合させて、外部に導出
してある。The electrode terminals 3 and 5 have a structure in which lead-out terminal portions 32 and 52, which are power feeding portions, are provided in electrode contact portions 31 and 51 that are in contact with electrodes formed on both end surfaces of the positive temperature coefficient thermistor 4. ,
The bent portions 33 and 53 provided at the bases of the lead-out terminal portions 32 and 52 are fitted into the recessed portions 101 and 102 provided in the case 1 and led out to the outside.
上記構造の正特性サーミスタ装置は、正特性サーミスタ
４が正常であれば、第７図に示すように、電圧印加直後
に突入電流Ipが流れた後、自己発熱により時間経過と共
に抵抗値が急激に増大して電流が減衰し、熱平衡時には
極めて低い電流値Ioとなる。ところが、当該正特性サー
ミスタ装置の置かれた外部条件等の悪影響を受けて正特
性サーミスタ４が劣化した場合、本来、低電流となるべ
き熱平衡時に曲線（Ａ）のように再び上昇して過電流が
流れ、正特性サーミスタ４の破損、異常発熱、それに伴
う火災等を生じてしまうことがあり、極めて危険な状態
となる。In the positive temperature coefficient thermistor device having the above structure, if the positive temperature coefficient thermistor 4 is normal, as shown in FIG. 7, after the inrush current Ip flows immediately after the voltage application, the resistance value sharply increases with time due to self-heating. The current increases and decays, resulting in an extremely low current value Io at thermal equilibrium. However, when the PTC thermistor 4 deteriorates due to adverse effects such as external conditions in which the PTC thermistor device is placed, the PTC thermistor 4 rises again as shown by the curve (A) at the time of thermal equilibrium that is supposed to be a low current, and the overcurrent rises again. May flow, causing damage to the positive temperature coefficient thermistor 4, abnormal heat generation, and accompanying fire, which is an extremely dangerous state.
このような問題を解決する手段として、従来は、第８図
に拡大して示すように、電極端子３（または５）の引出
端子部32の基部を狭幅にして過電流溶断部33を形成し、
過電流が流れた場合に該過電流溶断部33を溶断させてヒ
ューズ作用を行なわせることにより、正特性サーミスタ
４の保護を図っていた。As a means for solving such a problem, conventionally, as shown in an enlarged view in FIG. 8, the base portion of the lead-out terminal portion 32 of the electrode terminal 3 (or 5) is narrowed to form the overcurrent fusing portion 33. Then
When an overcurrent flows, the PTC thermistor 4 is protected by fusing the overcurrent fusing part 33 to perform a fuse action.
＜発明が解決しようとする課題＞ しかしながら、上述した従来の正特性サーミスタ装置に
は次のような問題点がある。<Problems to be Solved by the Invention> However, the above-described conventional PTC thermistor device has the following problems.
（イ）過電流溶断部33が、引出端子部32と同一の方向と
なっているため、過電流溶断部33の長さが引出端子部32
の長さによる制限を受け、あまり長くすることができな
い。このため、大きな溶断電流を必要とし、過電流保護
作用が低下する。第８図に示した従来例の場合は、溶断
電流が6Aにも達し、火災の危険性さえあった。(A) Since the overcurrent fusing part 33 is in the same direction as the lead terminal part 32, the length of the overcurrent fusing part 33 is the same as that of the lead terminal part 32.
It cannot be made too long because it is limited by its length. Therefore, a large fusing current is required, and the overcurrent protection action is reduced. In the case of the conventional example shown in FIG. 8, the fusing current reached 6 A and there was even a risk of fire.
（ロ）しかも、過電流溶断部33をケース１内に位置させ
てあったため、過電流溶断部33の長さがケースの内部寸
法によって制限されてしまう。このことも、溶断電流が
大きくなる原因となっていた。(B) Moreover, since the overcurrent fusing part 33 is located in the case 1, the length of the overcurrent fusing part 33 is limited by the internal dimensions of the case. This also causes the fusing current to increase.
（ハ）引出端子部32の一部に狭幅にして、過電流溶断部
33を形成する構造であるため、引出端子部32の強度が過
電流溶断部33の部分で著しく低下してしまい、引出端子
部32が簡単に破損してしまう。特に引出端子部32は外部
回路との接続部分となるものであって外力を受け易いた
め、この欠点は信頼性保持の面から極めて重大な欠陥と
なる。(C) Part of the lead-out terminal portion 32 is made narrower to allow overcurrent fusing
Since the structure is such that 33 is formed, the strength of the lead terminal portion 32 is significantly reduced at the overcurrent fusing portion 33, and the lead terminal portion 32 is easily damaged. In particular, since the lead-out terminal portion 32 serves as a connecting portion with an external circuit and is easily subjected to an external force, this defect is a very serious defect from the viewpoint of maintaining reliability.
（ニ）過電流溶断部33の幅を大きくすれば機械的強度は
増大するが、そうすると過電流保護機能が低下してしま
う。(D) If the width of the overcurrent fusing part 33 is increased, the mechanical strength is increased, but then the overcurrent protection function is deteriorated.
本発明の装置は、小さい電流で確実に、かつ、素早く溶
断でき、火災等を発生することのない安全性の高い、高
信頼度、高性能のヒューズ機能を持つ正特性サーミスタ
装置を提供することである。The device of the present invention provides a positive temperature coefficient thermistor device having a highly reliable and high performance fuse function, which can be surely and quickly blown with a small current and does not cause a fire or the like with high safety. Is.
本発明のもう一つの課題は、引出端子部の支持安定性に
優れた高信頼度の正特性サーミスタ装置を提供すること
である。Another object of the present invention is to provide a highly reliable positive temperature coefficient thermistor device having excellent support stability of the lead terminal portion.
本発明のもう一つの課題は、過電流保護動作によって飛
散する溶断金属粒子が正特性サーミスタ電極等に付着す
ることのない高信頼度の正特性サーミスタ装置を提供す
ることである。Another object of the present invention is to provide a highly reliable positive temperature coefficient thermistor device in which fusing metal particles scattered by an overcurrent protection operation do not adhere to a positive temperature coefficient thermistor electrode or the like.
＜課題を解決するための手段＞ 上述した課題解決のため、本発明に係る正特性サーミス
タ装置は、正特性サーミスタと、この正特性サーミスタ
の電極に対接する電極対接部及びこの電極対接部に連続
させた引出端子部を有する一対の電極端子と、これらの
電極端子の少なくとも一方に電気絶縁されて重ねられた
放熱板とを、ケースに組込んである。前記電極対接部
が、一面側に配置されると共に、前記一面側から連続し
て、前記一面と直交する側面に沿いほぼ直角に折曲げら
れて配置された導出部を有する。前記引出端子部は前記
一面側に位置する折曲片を有し、前記折曲片に連続して
前記側面に沿いほぼ直角に折曲げられ、前記側面におい
て前記電極対接部の前記導出部の横方向に間隔をおいて
配置されている。前記引出端子部と前記電極対接部の前
記導出部とは、前記側面に配置され過電流溶断部となる
狭幅部によって連続している。<Means for Solving the Problems> In order to solve the problems described above, a positive temperature coefficient thermistor device according to the present invention is provided with a positive temperature coefficient thermistor, an electrode contact portion that contacts an electrode of the positive temperature coefficient thermistor, and an electrode contact portion. A pair of electrode terminals having lead terminal portions continuous with each other and a heat radiating plate which is electrically insulated and overlapped with at least one of the electrode terminals are incorporated in the case. The electrode pair contacting portion is disposed on the one surface side, and has a lead-out portion that is continuous from the one surface side and is bent and disposed at a substantially right angle along a side surface orthogonal to the one surface. The lead-out terminal portion has a bent piece located on the one surface side, is bent at a substantially right angle along the side surface continuously with the bent piece, and at the side surface of the lead-out portion of the electrode pairing portion. Spaced laterally. The lead-out terminal portion and the lead-out portion of the electrode pair contact portion are connected by a narrow width portion which is arranged on the side surface and serves as an overcurrent fusing portion.
＜作用＞ 電極端子の少なくとも一つは、電極対接部が一面側に配
置されと共に、一面側と交叉する側面に折曲げられて配
置された導出部を有し、引出端子部が側面において電極
対接部の導出部の横方向に間隔をおいて配置され、引出
端子部と電極対接部の導出部とが、側面に配置された過
電流溶断部となる狭幅部によって連続しているから、過
電流溶断部の長さが引出端子部の引出し長さによる制限
を受けないようになり、長さ選定の自由度が高くなる。
この結果、小さい電流で確実に、かつ、素早く溶断でき
るようになり、過電流保護作用が向上し、火災等を発生
することのない安全性の高い正特性サーミスタ装置が得
られる。<Operation> At least one of the electrode terminals has an electrode contact portion arranged on one surface side and a lead-out portion bent and arranged on a side surface intersecting with the one surface side. The lead-out terminal portion and the lead-out portion of the electrode pair-contacting portion are arranged at intervals in the lateral direction of the lead-out portion of the contact portion, and the lead-out terminal portion and the lead-out portion of the electrode pair contact portion are connected by a narrow portion serving as an overcurrent fusing portion arranged on the side surface. Therefore, the length of the overcurrent fusing part is not restricted by the drawing length of the drawing terminal part, and the degree of freedom in selecting the length is increased.
As a result, it becomes possible to surely and quickly blow with a small current, the overcurrent protection function is improved, and a highly safe positive temperature coefficient thermistor device which does not cause a fire or the like can be obtained.
引出端子部は電極対接部のある一面側に位置する折曲片
を有しているから、引出端子部が電極端子板の上に重ね
られる他の部材、例えば絶縁板等によって押えられる。
このため、過電流溶断部となる機械的に弱い狭幅部を備
える引出端子部に対して、補強作用が加わり、引出端子
部の支持安全性に優れた高信頼度の正特性サーミスタ装
置が得られる。Since the lead-out terminal portion has the bent piece located on the one surface side where the electrode pair contact portion is present, the lead-out terminal portion is pressed by another member, for example, an insulating plate or the like, which is stacked on the electrode terminal plate.
For this reason, a reinforcement function is added to the lead-out terminal portion that has a mechanically weak narrow portion that becomes the overcurrent melting portion, and a highly reliable positive temperature coefficient thermistor device with excellent support safety of the lead-out terminal portion is obtained. To be
電極対接部は一面側に配置されており、過電流溶断部と
なる狭幅部が側面に配置されているから、過電流保護動
作によって狭幅部が溶断し、金属粒子が飛散した場合、
溶断金属粒子が狭幅部の存在する側面から、正特性サー
ミスタ電極と電極対接部が接触する一面側まで飛散して
付着する確率が低下し、飛散した溶断金属粒子が再度繋
って導通することのない高信頼度の正特性サーミスタ装
置が得られる。The electrode pair contact portion is arranged on the one surface side, and since the narrow width portion which becomes the overcurrent fusing portion is arranged on the side surface, the narrow width portion is fused by the overcurrent protection operation, and the metal particles are scattered,
The probability that the fusing metal particles will be scattered and adhered from the side surface where the narrow width portion is present to the one side where the positive temperature coefficient thermistor electrode and the electrode pair contact portion are in contact with each other, and the scattered fusing metal particles are re-connected and conductive. A highly reliable positive temperature coefficient thermistor device can be obtained.
＜実施例＞ 第１図は本発明に係る正特性サーミスタ装置の分解図、
第２図は同じく底面側から見た組立斜視図である。図に
おいて、第５図及び第６図と同一の参照符号は同一性あ
る構成部分を示している。実施例は、電極端子３及び５
の内、絶縁板６及び放熱板７側の電極端子５に過電流溶
断部を設けたものを示している。電極端子５は、電極対
接部51が一面側に配置されると共に、一面側から、一面
側と交叉する側面に折曲げられて配置された導出部51a
を有している。<Example> FIG. 1 is an exploded view of a positive temperature coefficient thermistor device according to the present invention.
FIG. 2 is a perspective view of assembly as seen from the bottom side. In the figure, the same reference numerals as those in FIGS. 5 and 6 denote the same components. In the embodiment, the electrode terminals 3 and 5 are used.
Among them, the electrode terminal 5 on the side of the insulating plate 6 and the heat sink 7 is provided with an overcurrent fusing part. In the electrode terminal 5, the electrode pair contact portion 51 is disposed on the one surface side, and the lead portion 51a is disposed by being bent from the one surface side to the side surface intersecting with the one surface side.
have.
電極端子５の引出端子部52は、電極対接部51のある一面
側に位置する折曲片52aを有し、折曲片52aに連続して側
面に折曲げられている。そして、側面において、電極対
接部51の導出部51aの横方向ｂに間隔をおいて配置され
ている。方向ｂは引出端子部52の引出方向ａと交叉す
る。The lead-out terminal portion 52 of the electrode terminal 5 has a bent piece 52a located on the one surface side where the electrode pair contact portion 51 is present, and is bent to the side surface continuously to the bent piece 52a. Then, on the side surface, the lead-out portions 51a of the electrode contact portion 51 are arranged at intervals in the lateral direction b. The direction b intersects the drawing direction a of the drawing terminal portion 52.
引出端子部52と電極対接部51の導出部51aとは、側面に
配置された過電流溶断部となる狭幅部53によって連続し
ている。引出端子部52は電極対接部51の導出部51aから
間隔dlだけ離れた位置にあり、この間隔dlに過電流溶断
部53を接続させてある。The lead-out terminal portion 52 and the lead-out portion 51a of the electrode pair contact portion 51 are continuous with each other by a narrow portion 53 which is an overcurrent fusing portion arranged on the side surface. The lead terminal portion 52 is located at a position separated from the lead-out portion 51a of the electrode pair contact portion 51 by a distance dl, and the overcurrent fusing portion 53 is connected to this distance dl.
上述のように、電極端子３、５のうち、電極端子５は、
電極対接部51が一面側に配置されと共に、一面側と交叉
する側面に折曲げられて配置された導出部51aを有し、
引出端子部52が側面において電極対接部51の導出部51a
の横方向ｂに間隔をおいて配置され、引出端子部52と電
極対接部51の導出部51aとが、側面に配置された過電流
溶断部となる狭幅部53によって連続しているから、過電
流溶断部53の長さdlが引出端子部52の引出し長さによる
制限を受けないようになり、長さ選定の自由度が高くな
る。この結果、小さい電流で確実にかつ素早く溶断でき
るようになり、過電流保護作用が向上し、火災等を発生
することのない安全性の高い正特性サーミスタ装置が得
られる。因に本発明に係る正特性サーミスタ装置によれ
ば、溶断電流値を従来の6Aから1Aに低下させることがで
きた。As described above, among the electrode terminals 3 and 5, the electrode terminal 5 is
The electrode pair contact portion 51 is arranged on the one surface side, and has a lead-out portion 51a arranged by being bent on the side surface intersecting with the one surface side,
The lead-out terminal portion 52 has a side surface on which the lead-out portion 51a of the electrode pair contact portion 51 is provided.
Since the lead-out terminal portion 52 and the lead-out portion 51a of the electrode pair contact portion 51 are arranged at intervals in the horizontal direction b, the narrow-width portion 53, which is the overcurrent fusing portion and is arranged on the side surface, is continuous. The length dl of the overcurrent fusing part 53 is not restricted by the drawing length of the drawing terminal part 52, and the degree of freedom in selecting the length is increased. As a result, it becomes possible to surely and quickly blow with a small current, the overcurrent protection function is improved, and a highly safe positive temperature coefficient thermistor device which does not cause a fire or the like can be obtained. By the way, according to the positive temperature coefficient thermistor device of the present invention, the fusing current value could be reduced from the conventional 6A to 1A.
組立状態では、電極端子３の引出端子部32のケース１の
底部に形成した孔1bを通って外部に導出すると共に、こ
の電極引出端子３の上に正特性サーミスタ４、電極端子
５、絶縁板６及び放熱板７を順次積層し、放熱板７の周
辺に形成した取付腕71〜74を、ケース１の底面に折曲げ
固定する。In the assembled state, the lead-out terminal portion 32 of the electrode terminal 3 is led out to the outside through the hole 1b formed in the bottom of the case 1, and on the electrode lead-out terminal 3, the positive temperature coefficient thermistor 4, the electrode terminal 5, and the insulating plate are provided. 6 and the heat dissipation plate 7 are sequentially stacked, and the mounting arms 71 to 74 formed around the heat dissipation plate 7 are bent and fixed to the bottom surface of the case 1.
ここで、引出端子部52の一端側には、電極対接部51と略
同じ平面位置となる折曲片52aが設けられており、組立
状態で、この折曲片52aをケース１の端面1aと絶縁板６
との間で狭持固定するようになっている。このため、引
出端子部52の支持構造が強固になり、外力を受けても引
出端子部52にグラツキを生じることなく、過電流溶断部
53が破断しにくくなる。Here, a bent piece 52a is provided on one end side of the lead-out terminal portion 52 so as to be substantially in the same plane position as the electrode pair contact portion 51. In the assembled state, the bent piece 52a is attached to the end surface 1a of the case 1. And insulating plate 6
It is designed to be clamped between and. Therefore, the support structure of the lead-out terminal portion 52 is strengthened, and the lead-out terminal portion 52 does not suffer from a grind even when an external force is applied, and the overcurrent fusing portion is not generated.
53 is less likely to break.
また、電極対接部51は一面側に配置されており、過電流
溶断部となる狭幅部53が側面に配置されているから、過
電流保護動作によって狭幅部53が溶断し、金属粒子が飛
散した場合、溶断金属粒子が狭幅部53の存在する側面か
ら、正特性サーミスタ４の電極と電極対接部51が接触す
る一面側まで飛散して付着する確率が低下し、飛散した
溶断金属粒子が再度繋って導通することのない高信頼度
の正特性サーミスタ装置が得られる。Further, the electrode pair contact portion 51 is arranged on the one surface side, and since the narrow width portion 53 to be the overcurrent fusing portion is arranged on the side surface, the narrow width portion 53 is fused by the overcurrent protection operation, and the metal particles When is scattered, the probability that the fusing metal particles are scattered and adhered from the side surface where the narrow portion 53 is present to the one side where the electrode of the positive temperature coefficient thermistor 4 and the electrode pair contact portion 51 are in contact is reduced, and the blown fusing It is possible to obtain a highly reliable positive temperature coefficient thermistor device in which the metal particles are not reconnected and electrically connected.
電極端子５は、引出端子部52及び電極対接部51の導出部
51aを、ケース１の底面に形成した孔1c、1dに挿通させ
てケース１の底面外部に導出する。従って、過電流溶断
部53の両側にある引出端部52及び電極対接部51の導出部
51aが孔1c、1dによって支持され、過電流溶断部53に過
度の外力が加わることがないので、過電流溶断部53の破
断がより一層確実に防止される。The electrode terminal 5 is a lead-out terminal portion 52 and a lead-out portion of the electrode pair contact portion 51.
The 51a is inserted into the holes 1c and 1d formed in the bottom surface of the case 1 and led out to the outside of the bottom surface of the case 1. Therefore, the lead-out end portions 52 on both sides of the overcurrent fusing portion 53 and the lead-out portions of the electrode pair contact portion 51.
Since 51a is supported by the holes 1c and 1d and an excessive external force is not applied to the overcurrent fusing part 53, breakage of the overcurrent fusing part 53 is more reliably prevented.
次に、上記構造の正特性サーミスタ装置の製造組立方法
について説明する。まず、第３図に示すように、電極端
子５の電極対接部51の導出部51aと引出端子部52との間
に、切欠孔８によって分けられて、両端が互いに連続す
る複数の導電通路53、54を並列的に設ける。導電通路53
は後で過電流溶断部となる部分であるが、この導通通路
53と並列して、これと同じ幅かそれより広い導電通路54
を設ける。これにより、狭幅の導電通路53が導電通路54
によって補強され、屈曲、破断等が起きにくくなる。Next, a method of manufacturing and assembling the PTC thermistor device having the above structure will be described. First, as shown in FIG. 3, between the lead-out portion 51a of the electrode pair contact portion 51 of the electrode terminal 5 and the lead-out terminal portion 52, a plurality of conductive passages separated by the notch hole 8 and having both ends continuous with each other. 53 and 54 are provided in parallel. Conductive passage 53
Is the part that will later become the overcurrent fusing part.
Parallel to 53, conductive path of this width or wider 54
To provide. As a result, the narrow conductive path 53 is replaced by the conductive path 54.
It is reinforced by and becomes less likely to bend or break.
次に、第１図に示す部品配置で、当該電極端子５を組込
んだ後、第４図に示すように、電極対接部51の導出部51
a側を、ケース１の底面外部の位置X1−X1で切断する。
これにより、導電通路54が電極対接部51の導出部51aか
ら切離され、引出端子部52及び導電通路53による過電流
溶断部を通って電極対接部51に至る給電路（イ）が形成
される。Next, after the electrode terminal 5 is assembled in the component arrangement shown in FIG. 1, the lead-out portion 51 of the electrode contact portion 51 is shown as shown in FIG.
Cut the a side at position X1-X1 outside the bottom surface of case 1.
As a result, the conductive passage 54 is separated from the lead-out portion 51a of the electrode pair contact portion 51, and the power supply path (b) that reaches the electrode pair contact portion 51 through the lead-out terminal portion 52 and the overcurrent fusing portion formed by the conductive passage 53 is formed. It is formed.
上述のように、組立完了に至るまで、過電流溶断部とな
る狭幅の導電通路53が、これと同じ幅かそれより広い導
電通路54によって補強されるので、組立の途中での導電
通路53の屈曲、破断等を、確実に防止できる。As described above, until the assembly is completed, the narrow conductive passage 53 which becomes the overcurrent fusing portion is reinforced by the conductive passage 54 having the same width or wider than that, so that the conductive passage 53 in the middle of the assembly. It is possible to reliably prevent the bending and breaking of the.
＜発明の効果＞ 以上述べたように、本発明によれば、次のような効果を
得ることができる。<Effects of the Invention> As described above, according to the present invention, the following effects can be obtained.
（ａ）小さい電流で確実に、かつ、素早く溶断でき、火
災時の発生することのない安全性の高い高信頼度、高性
能のヒューズ機能を持つ正特性サーミスタ装置を提供で
きる。(A) It is possible to provide a positive temperature coefficient thermistor device which can be surely and quickly blown with a small current, has a high reliability with high safety, and has a high-performance fuse function that does not occur in the event of a fire.
（ｂ）引出端子部の支持安定性に優れた高信頼度の正特
性サーミスタ装置を提供できる。(B) It is possible to provide a highly reliable positive temperature coefficient thermistor device having excellent support stability of the lead terminal portion.
（ｃ）過電流保護動作によって狭幅部が溶断して金属粒
子が飛散した場合、溶断金属粒子が狭幅部の存在する側
面から正特性サーミスタ電極と電極対接部が接触する一
面側まで飛散して付着する確率が低下し、飛散した溶断
金属粒子が再度繋って導通することのない高信頼度の正
特性サーミスタ装置を提供できる。(C) When the narrow portion is melted and the metal particles are scattered by the overcurrent protection operation, the melted metal particles are scattered from the side surface where the narrow portion is present to the one surface side where the positive temperature coefficient thermistor electrode and the electrode pair contact portion are in contact with each other. It is possible to provide a highly reliable positive temperature coefficient thermistor device in which the probability of adherence is reduced, and the fused metal particles that have scattered do not reconnect and become conductive.
第１図は本発明に係る正特性サーミスタ装置の分解図、
第２図は同じく底面側から見た組立斜視図、第３図は切
離し加工を施す前の電極端子の斜視図、第４図は第１図
及び第２図に示した正特性サーミスタの製造組立方法を
説明する図、第５図は従来の正特性サーミスタ装置の分
解図、第６図は同じくその正面断面図、第７図は正特性
サーミスタの電流時間特性図、第８図は従来の正特性サ
ーミスタ装置における電極端子の拡大斜視図である。 １……ケース、３……電極端子、５……電極端子 ４……正特性サーミスタ、６……絶縁板、７……放熱板 51……電極対接部、52……引出端子部 53……過電流溶断部FIG. 1 is an exploded view of a positive temperature coefficient thermistor device according to the present invention,
FIG. 2 is a perspective view of the assembly as seen from the bottom side, FIG. 3 is a perspective view of the electrode terminals before the cutting process, and FIG. 4 is a manufacturing and assembly of the positive temperature coefficient thermistor shown in FIGS. 1 and 2. FIG. 5 is a diagram for explaining the method, FIG. 5 is an exploded view of a conventional positive characteristic thermistor device, FIG. 6 is a front sectional view of the same, FIG. 7 is a current-time characteristic diagram of the positive characteristic thermistor, and FIG. It is an expansion perspective view of an electrode terminal in a characteristic thermistor device. 1 ... Case, 3 ... Electrode terminal, 5 ... Electrode terminal 4 ... Positive characteristic thermistor, 6 ... Insulation plate, 7 ... Heat dissipation plate 51 ... Electrode contact part, 52 ... Lead-out terminal part 53 ... … Overcurrent fusing part
Claims (1)
タの電極に対接する電極対接部及びこの電極対接部に連
続させた引出端子部を有する一対の電極端子と、これら
の電極端子の少なくとも一方に電気絶縁されて重ねられ
た放熱板とを、ケースに組込んだ正特性サーミスタ装置
であって、 前記電極端子の少なくとも一つは、 前記電極対接部が、一面側に配置されると共に、前記一
面側から連続して、前記一面と直交する側面に沿いほぼ
直角に折曲げられて配置された導出部を有し、 前記引出端子部が、前記一面側に位置する折曲片を有
し、前記折曲片に連続して前記側面に沿いほぼ直角に折
曲げられ、前記側面において前記電極対接部の前記導出
部の横方向に間隔をおいて配置され、 前記引出端子部と前記電極対接部の前記導出部とが、前
記側面に配置され過電流溶断部となる狭幅部によって連
続していること を特徴とする正特性サーミスタ装置。1. A positive temperature coefficient thermistor, a pair of electrode terminals having an electrode contacting part which contacts an electrode of the positive temperature coefficient thermistor and a lead terminal part which is continuous with the electrode contacting part, and at least these electrode terminals. A heat dissipation plate that is electrically insulated and overlapped on one side, and a positive temperature coefficient thermistor device incorporated in a case, wherein at least one of the electrode terminals has the electrode contact portion arranged on one surface side. , A lead-out portion that is continuous from the one surface side and is arranged by being bent substantially at a right angle along a side surface orthogonal to the one surface, and the lead-out terminal portion has a bending piece located on the one surface side. Then, it is bent at a substantially right angle along the side surface continuously with the bending piece, and is arranged at a distance in the lateral direction of the lead-out portion of the electrode pair contact portion on the side surface, and the lead terminal portion and the The derivation portion of the electrode pair contact portion, A positive temperature coefficient thermistor device, characterized in that it is continuous by a narrow portion arranged on the side surface and serving as an overcurrent fusing portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60168256A JPH07120568B2 (en) | 1985-07-30 | 1985-07-30 | PTC thermistor device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60168256A JPH07120568B2 (en) | 1985-07-30 | 1985-07-30 | PTC thermistor device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6229102A JPS6229102A (en) | 1987-02-07 |
| JPH07120568B2 true JPH07120568B2 (en) | 1995-12-20 |
Family
ID=15864636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60168256A Expired - Lifetime JPH07120568B2 (en) | 1985-07-30 | 1985-07-30 | PTC thermistor device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07120568B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0650956Y2 (en) * | 1988-07-22 | 1994-12-21 | ティーディーケイ株式会社 | Electrode plate for PTC heater |
| JP2513528B2 (en) * | 1990-09-13 | 1996-07-03 | 株式会社ソルテック | X-ray extractor |
| JP4890694B2 (en) * | 2001-08-30 | 2012-03-07 | タイコエレクトロニクスジャパン合同会社 | Polymer PTC thermistor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5540946Y2 (en) * | 1976-06-21 | 1980-09-25 | ||
| JPS5828448Y2 (en) * | 1976-10-13 | 1983-06-21 | 音羽電機工業株式会社 | Abnormal voltage absorption device |
-
1985
- 1985-07-30 JP JP60168256A patent/JPH07120568B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6229102A (en) | 1987-02-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6407659B2 (en) | Electronic device | |
| US5311164A (en) | Surge absorber | |
| WO2014171515A1 (en) | Protective device | |
| KR20180130597A (en) | Production method for mounting body, mounting method for temperature fuse elements, and temperature fuse element | |
| US20040166405A1 (en) | Temperature fuse, and battery using the same | |
| JP2004071264A (en) | Fuse | |
| US7666544B2 (en) | Connection device for electric accumulator | |
| US9431821B2 (en) | Electronic device | |
| US3436712A (en) | Thermal circuit breaker | |
| CA1140963A (en) | Miniature electric fuse | |
| JPH07120568B2 (en) | PTC thermistor device | |
| KR20040065342A (en) | Structure of safety mode for positive temperature coefficient thermistor | |
| JP2003022798A (en) | Link fuse | |
| JPH0734392B2 (en) | PTC thermistor heating device | |
| JPS64715Y2 (en) | ||
| JP2005235680A (en) | Chip type fuse and its manufacturing method | |
| KR101887708B1 (en) | An electronic device | |
| KR101741563B1 (en) | Circuit protection device and method of manufacturing the same | |
| KR101504132B1 (en) | The complex protection device of blocking the abnormal state of current and voltage | |
| KR101547439B1 (en) | The complex protection device of blocking the abnormal state of current and voltage | |
| KR101025712B1 (en) | Ptc device | |
| JP2002222626A (en) | Current fuse, and battery using this current fuse | |
| KR860002715Y1 (en) | Communication arrangement device | |
| JP2634467B2 (en) | 2 terminal type small time lag fuse | |
| JPH08234619A (en) | Abnormal temperature preventing device of fixing device |