JP2006147326A

JP2006147326A - Thermo protector

Info

Publication number: JP2006147326A
Application number: JP2004335359A
Authority: JP
Inventors: Toshiaki Kawanishi; 俊朗川西
Original assignee: Uchihashi Estec Co Ltd
Current assignee: Uchihashi Estec Co Ltd
Priority date: 2004-11-19
Filing date: 2004-11-19
Publication date: 2006-06-08

Abstract

<P>PROBLEM TO BE SOLVED: To provide a thermo protector which works favorably by releasing an elastic distortion energy of an elastic body with a soluble body melted, where the elastic body is fixed and clamped by a soluble material such as a solder to have the elastic distortion energy. <P>SOLUTION: A contactor 2 is fixed to both ends in a curved attitude for maintaining the elastic distortion energy, where the contactor 2 has elasticity in one lead conductor 1 of both lead conductors 1, 10 which are housed up and down to each other in a housing 6. At least one clamping 21 is performed by surface bonding via a soluble material 3. Both sides in the wide direction of the one lead conductor 1 are pressed to the inner surface of the housing by a convex part 5. The other lead conductor 10 is in contact with the contactor 2 in the curved attitude. Melting or softening of the soluble material releases the elastic distortion energy to break electric conduction between the lead conductors. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は可溶材の融点または軟化点を動作温度とするサーモプロテクタに関するものである。 The present invention relates to a thermo protector whose operating temperature is the melting point or softening point of a soluble material.

電子・電気機器における異常発熱を感知し、この感知に基づくカットオフ動作で機器を電源から遮断して機器の過熱を防止し、火災の発生を未然に防止するサーモプロテクタとして、弾性歪みエネルギーを蓄積しておき、可溶材の溶融乃至は軟化により弾性歪みエネルギーを解放させる方式が知られている。
例えば図９の（イ）に示すように弾性金属片２'を強制的に曲げ、この曲げ弾性金属片１'の両端を曲げ反力に抗して一対の固定端子４１'，４２'に所定融点の可溶合金（はんだ）３'で接合し、周囲温度が可溶合金２'の融点まで昇温して可溶合金が溶融されると、図９の（ロ）に示すように弾性金属片２'の曲げ応力を解除させて弾性金属片２'の一端と一方の固定端子４２'との接合を脱離して通電を遮断するものが知られている（特許文献１参照）。
また、図１０の（イ）に示すように一端にリード端子１３'を取付けた金属ケース１４'内に一端側から所定融点のペレット２'、座板１５'、圧縮スプリング１'、座板１６'を順次に収容し、更に外周が金属ケース内面に摺動接触されたコンタクト４２'を収容し、リードピン貫通ブッシング１７'を金属ケース１４'の他端側に固定し、このブッシング１７'とコンタクト４２'との間に引外しスプリング１８'を組み込んでリード端子１３'→金属ケース１４'→コンタクト４２'→リードピン４１'を経る導通路を構成し、周囲温度がペレット２'の融点まで昇温されてペレット２'が溶融されると、図１０の（ロ）に示すように圧縮スプリング１'の圧縮応力を解放させて引外しスプリング１８'の圧縮応力でリードピン４１'の先端からコンタクト４２'を離隔させて前記導通路を遮断するものも知られており、いわゆる、ペレットタイプ温度ヒューズと称されている（非特許文献１参照）。 Accumulated elastic strain energy as a thermo protector that detects abnormal heat generation in electronic and electrical devices, cuts off the device from the power supply by cut-off operation based on this detection, prevents overheating of the device, and prevents the occurrence of fire. A method of releasing elastic strain energy by melting or softening a soluble material is known.
For example, as shown in FIG. 9 (a), the elastic metal piece 2 ′ is forcibly bent, and both ends of the bent elastic metal piece 1 ′ are subjected to a bending reaction force to be fixed to the pair of fixed terminals 41 ′ and 42 ′. When joining with a melting alloy (solder) 3 ′ having a melting point and the ambient temperature is raised to the melting point of the melting alloy 2 ′ and the melting alloy is melted, as shown in FIG. There is known a technique in which the bending stress of the piece 2 ′ is released and the connection between one end of the elastic metal piece 2 ′ and one fixed terminal 42 ′ is released to cut off the current supply (see Patent Document 1).
Further, as shown in FIG. 10 (a), a pellet 2 ′ having a predetermined melting point, a seat plate 15 ′, a compression spring 1 ′, and a seat plate 16 from one end side in a metal case 14 ′ having a lead terminal 13 ′ attached to one end. 'Is sequentially accommodated, and the contact 42' whose outer periphery is slidably contacted with the inner surface of the metal case is accommodated, and the lead pin through bushing 17 'is fixed to the other end side of the metal case 14'. A trip spring 18 'is assembled between the lead terminal 13', the metal case 14 ', the contact 42', and the lead pin 41 ', and the ambient temperature is raised to the melting point of the pellet 2'. When the pellet 2 'is melted, the compressive stress of the compression spring 1' is released as shown in FIG. 10B, and the contact 42 'from the tip of the lead pin 41' is released by the compressive stress of the tripping spring 18 '. Release There is also known one that blocks the conduction path at a distance and is called a so-called pellet type thermal fuse (see Non-Patent Document 1).

特開平７−２９４８１号公報JP 7-29481 A 電気工学ハンドブック１９８８の第８１８頁Page 818 of Electrical Engineering Handbook 1988

しかしながら、図９に示す方式では、弾性金属片の曲げ反力Ｍ’及び押し拡げ力Ｆ’が可溶合金（はんだ）に作用するから、可溶合金における応力分布が複雑であり、応力集中に基づくクリープが生じ易く、動作不良が発生し易い。更に、可溶合金が通電路の一部となっているので、可溶合金のクリープによる抵抗増大により発熱し、自己発熱による動作誤差も懸念される。更に、また溶融した合金の糸引きによる動作不良も生じ得る。
また、図１０に示す方式では、座板による均圧化のためにペレットを一様に圧縮できても構造が複雑であり、小型化やコスト面での不利を免れ得ない。 However, in the method shown in FIG. 9, since the bending reaction force M ′ and the spreading force F ′ of the elastic metal piece act on the soluble alloy (solder), the stress distribution in the soluble alloy is complicated, and stress concentration occurs. Based on this, creep is likely to occur, and malfunction is likely to occur. Furthermore, since the fusible alloy is a part of the current path, heat is generated due to an increase in resistance due to creep of the fusible alloy, and there is a concern about an operation error due to self-heating. Furthermore, malfunctions due to stringing of the molten alloy can also occur.
Further, in the method shown in FIG. 10, even if the pellets can be uniformly compressed for pressure equalization by the seat plate, the structure is complicated, and disadvantages in terms of downsizing and cost cannot be avoided.

本発明の目的は、弾性歪エネルギーをはんだ等の可溶材による接合固定で支持している弾性体の弾性歪エネルギーが可溶体の溶融で解放されて良好に動作するサーモプロテクタを提供することにある。 An object of the present invention is to provide a thermo protector that operates satisfactorily by the elastic strain energy of the elastic body supporting the elastic strain energy by joining and fixing with a soluble material such as solder being released by melting of the soluble body. .

請求項１に係るサーモプロテクタは、ハウジング内に互いに上下に収容された両リード導体部分の一方のリード導体部分に弾性を有する接触片が弾性歪エネルギーを保持した曲げ状態で両端部において固定されており、少なくとも一方の固定が可溶材を介しての面接合により行われており、前記一方のリード導体部分の巾両側がハウジング内面に押え付けられており、前記曲げ状態の接触片に他方のリード導体部分が接触されており、前記可溶材の溶融乃至は軟化により前記弾性歪エネルギーが解放されて両リード導体間の電気的導通が遮断されることを特徴とする。 The thermo protector according to claim 1 is fixed at both ends in a bent state in which a resilient contact piece holds elastic strain energy on one lead conductor portion of both lead conductor portions accommodated in the housing one above the other. At least one of them is fixed by surface joining via a fusible material, and both width sides of the one lead conductor part are pressed against the inner surface of the housing, and the other lead is attached to the bent contact piece. The conductor portions are in contact with each other, and the elastic strain energy is released by melting or softening the fusible material, and electrical conduction between the lead conductors is cut off.

請求項２に係るサーモプロテクタは、請求項１のサーモプロテクタにおいて、一方のリード導体部分の曲げ剛性が弾性を有する接触片の曲げ剛性の１０倍以上とされていることを特徴とする。 The thermo protector according to claim 2 is characterized in that, in the thermo protector according to claim 1, the bending rigidity of one lead conductor portion is 10 times or more of the bending rigidity of the elastic contact piece.

請求項３に係るサーモプロテクタは、請求項１または２のサーモプロテクタにおいて、弾性を有する接触片が他方のリード導体部分側に凸の曲線状に弾性変形されており、接触片の一端部が折り返されその折り返し部が一方のリード導体部分に可溶材を介して面接合されていることを特徴とする。 The thermo protector according to claim 3 is the thermo protector according to claim 1 or 2, wherein the elastic contact piece is elastically deformed in a convex curve shape on the other lead conductor portion side, and one end of the contact piece is folded back. The folded portion is surface-bonded to one lead conductor portion via a fusible material.

請求項４に係るサーモプロテクタは、請求項１〜３何れかのサーモプロテクタにおいて、可溶材が低融点金属であることを特徴とする。 The thermo protector according to claim 4 is the thermo protector according to any one of claims 1 to 3, wherein the soluble material is a low melting point metal.

請求項５に係るサーモプロテクタは、請求項１〜３何れかのサーモプロテクタにおいて、接触片の一端側と一方のリード導体部分との面接合箇所における可溶材が熱可塑性樹脂であり、接触片の他端側と一方のリード導体部分との固定が電気的導通のもとで行われていることを特徴とする。 The thermo protector according to claim 5 is the thermo protector according to any one of claims 1 to 3, wherein the soluble material at the surface joining portion between the one end side of the contact piece and the one lead conductor portion is a thermoplastic resin. The other end side and the one lead conductor portion are fixed under electrical conduction.

請求項６に係るサーモプロテクタは、請求項１〜５何れかのサーモプロテクタにおいて、弾性を有する接触片が金属または金属と樹脂との重合物あるいは複合物であることを特徴とする。 The thermo protector according to claim 6 is the thermo protector according to any one of claims 1 to 5, characterized in that the elastic contact piece is a metal or a polymer or a composite of a metal and a resin.

請求項７に係るサーモプロテクタは、請求項１〜６何れかのサーモプロテクタにおいて、ハウジングが上下に二分割の分割式とされ、弾性を有する接触片が固定された一方のリード導体部分が一方の分割ハウジング片内に収容され、他方のリード導体部分が他方の分割ハウジング片内に収容され、両分割ハウジング片が組合わされて一方のリード導体部分の巾両側が他方の分割ハウジング内面の凸部で押え付けられていることを特徴とする。 The thermo protector according to claim 7 is the thermo protector according to any one of claims 1 to 6, wherein the housing is divided into two parts in the vertical direction, and one lead conductor portion to which the elastic contact piece is fixed is one of the thermo protectors. Housed in a split housing piece, the other lead conductor portion is housed in the other split housing piece, both split housing pieces are combined, and the width sides of one lead conductor portion are convex portions on the inner surface of the other split housing. It is characterized by being pressed down.

請求項８に係るサーモプロテクタは、請求項７のサーモプロテクタにおいて、上下の分割ハウジング片が同一品であることを特徴とする。 The thermo protector according to claim 8 is the thermo protector according to claim 7, wherein the upper and lower divided housing pieces are the same product.

弾性接触片を、一端ヒンジ支持・他端固定または両端ヒンジ支持の柱を軸方向に圧縮したときの力学的状態とほぼ同じ力学的状態に安定に保持できる結果、ヒンジ支持点側に相当する弾性接触片一端の一方のリード導体部分への固定部に曲げモーメント反力が作用するのをよく抑制できてその弾性接触片一端部と一方のリード導体部分との可溶材による面接合界面に作用する応力を主に剪断応力にして当該界面に曲げモーメント反力に基づく劈開力が作用するのをよく軽減できるると共に他方のリード導体部分と弾性接触片との電気的接触状態を安定に保持できる。
従って、可溶材による面接合界面を安定に保持でき、接合界面の可溶材がクリープするのを防止できると共に電気的接触箇所を安定に保持でき、良好な動作を達成できる。 As a result of the elastic contact piece being able to be stably held in the same mechanical state as when one end hinge support / fixed at the other end or both ends hinge support column is compressed in the axial direction, the elasticity corresponding to the hinge support side Bending moment reaction force can be well suppressed from acting on the fixed part of one end of the contact piece to one lead conductor part, and acts on the interface between the elastic contact piece and one lead conductor part by a fusible material. It is possible to reduce the cleaving force based on the bending moment reaction force on the interface by using mainly the shear stress as well as stably maintaining the electrical contact state between the other lead conductor part and the elastic contact piece. .
Therefore, it is possible to stably hold the surface bonding interface by the fusible material, to prevent the fusible material at the bonding interface from creeping, to stably hold the electrical contact portion, and to achieve good operation.

図１の（イ）〜（ハ）は本発明に係るサーモプロテクタの基本的構造の一例を示し、図１の（イ）は動作前を、図１の（ロ）は動作後をそれぞれ示し、図１の（ハ）は図１の（イ）におけるハ−ハ断面図を示している。
図１において、６はハウジング、１，１０はハウジング内に互いに上下に配置されたリード導体部分である。２は弾性を有する板状または線状の接触片であり、先端部２１が折り返されて一方のリード導体部分１の先端部上面に可溶材３を介して面接合で固定され、水平方向圧縮力ｐにより曲げ状態とされて先端側の撓み角αL’が後述の角度αLにほぼ等しくされ、後端側２２が同上リード導体部分１に撓み角０で固定されている。この後端側固定には、溶接、リベッティング等が用いられる。
このようにして曲げられた接触片２には弾性曲げ歪エネルギーが保持されている。
この曲げ接触片２に他方のリード導体部分１０が電気的に接触されている。
５はハウジング内面に突設された凸部であり、一方のリード導体部分の巾両側がこれらの凸部で押え固定されている。
図１の（イ）において、接触片２の先端側２１の撓み角がαL’、後端側２２の撓み角が０、固定点での水平方向圧縮力がｐ、高さがｈである弾性接触片の撓み状態は、一端固定・他端ヒンジ支持の支柱の水平方向圧縮力ｐによる撓み状態にほぼ等しい。 1 (a) to 1 (c) show an example of the basic structure of the thermoprotector according to the present invention, FIG. 1 (a) shows before operation, and FIG. 1 (b) shows after operation. (C) in FIG. 1 is a cross-sectional view taken along the line ha in FIG.
In FIG. 1, 6 is a housing, and 1 and 10 are lead conductor portions disposed one above the other in the housing. Reference numeral 2 denotes an elastic plate-like or linear contact piece, the tip 21 is folded and fixed to the upper surface of the tip of one lead conductor portion 1 by surface bonding via a fusible material 3, and the horizontal compression force The bending state αL ′ on the front end side is made substantially equal to an angle αL, which will be described later, and the rear end side 22 is fixed to the lead conductor portion 1 with the bending angle 0. For the rear end side fixing, welding, riveting or the like is used.
Elastic bending strain energy is held in the contact piece 2 bent in this way.
The other lead conductor portion 10 is in electrical contact with the bending contact piece 2.
Reference numeral 5 denotes a convex portion projecting from the inner surface of the housing, and both width sides of one lead conductor portion are pressed and fixed by these convex portions.
In FIG. 1A, the elasticity of the contact piece 2 having a bending angle αL ′ on the front end side 21, a bending angle 0 on the rear end side 22, a horizontal compression force p at a fixed point, and a height h. The bending state of the contact piece is substantially equal to the bending state due to the horizontal compression force p of the column fixed to one end and supported by the other end hinge.

図２は一端固定・他端ヒンジ支持の柱（Long column）の水平方向圧縮力ｐによる撓み状態を示している。
図２において、点（ｘ，ｙ）での曲げモーメントをＭ_ｘとすると、 FIG. 2 shows a state of bending by a horizontal compression force p of a column (Long column) fixed at one end and supported at the other end hinge.
In FIG. 2, when the bending moment at the point (x, y) is M _x ,

ｄ^２ｙ／ｄｘ^２＝−Ｍ_ｘ／ＥＩ
が成立し（ただし、ＥＩは柱の曲げ剛性）、曲げモーメントＭ_ｘが d ² y / dx ² = −M _x / EI
(Where EI is the bending stiffness of the column) and the bending moment M _x is

Ｍ_ｘ＝ｐｙ−Ｍ_ｏｘ／L
で与えられるから、凸曲線の形状ｙは、ｐ／ＥＩ＝ｋ^２とおいて、 M _x = py−M _o x / L
Since the convex curve shape y is p / EI = k ² ,

ｙ＝Ａ〔cosｋｘ−（sinｋｘ）／ｋL＋（ｘ／L）−１〕
tanｋL＝ｋL
で与えられ、係数Ａはｘ＝L'において凸曲線ｙの高さが既知のｈであることから、 y = A [coskx- (sinkx) / kL + (x / L) -1]
tankL = kL
Since the height of the convex curve y is known h at x = L ′, the coefficient A is given by

ｙ_ｘ＝L'＝ｈ、（ｄｙ／ｄｘ）_ｘ＝L'＝０
より求めることができる。
従って、ヒンジ支持端での撓み角αLは、 y _{x = L ′} = h, (dy / dx) _{x = L ′} = 0
It can be obtained more.
Therefore, the deflection angle αL at the hinge support end is

αL＝（ｄｙ／ｄｘ）_ｘ＝L＝Ａ〔−（cosｋL）／L−ｋ（sinｋL）＋（１／L）〕
で与えられる。 αL = (dy / dx) _{x = L} = A [− (coskL) / L−k (sinkL) + (1 / L)]
Given in.

図２において、ヒンジ支持端を力学的に凍結しても（ヒンジ支持端の撓み角をそのままにしてヒンジ支持を固定支持に変えても）力学的状態は変わらない。
図１の（イ）において、曲げ剛性（ヤング率×断面２次モーメント）が接触片２に較べて大なる一方のリード導体部分１がハウジング内面の凸部５で押え固定されているから、水平圧縮力ｐのために一方のリード導体部分１に圧縮分力が作用しても、弾性接触片２との交点が実質的に不動とされ（一方のリード導体部分１の曲げ剛性は接触片２の曲げ剛性の１０倍以上とすることが望ましい）、従って、図１の（イ）の撓み角αL’を図２における撓み角αLに等しくすれば、図１の（イ）において一方のリード導体部分１の先端側と弾性接触片２との接合箇所に曲げモーメントが作用するのを排除し得て可溶材３による接合界面に剪断応力のみを作用させることができる。従って、曲げモーメント反力に基づく接合界面を劈開しようとする応力が作用するのを良好に防止できる。 In FIG. 2, even if the hinge support end is dynamically frozen (even if the hinge support end is bent and the hinge support is changed to a fixed support), the mechanical state does not change.
In FIG. 1A, since one lead conductor portion 1 whose bending rigidity (Young's modulus × secondary moment of section) is larger than that of the contact piece 2 is pressed and fixed by the convex portion 5 on the inner surface of the housing, Even if a compressive force acts on one lead conductor portion 1 due to the compressive force p, the intersection with the elastic contact piece 2 is substantially immovable (the bending rigidity of one lead conductor portion 1 is the contact piece 2). Therefore, if the bending angle αL ′ in FIG. 1 (a) is equal to the bending angle αL in FIG. 2, one lead conductor in FIG. It is possible to eliminate the bending moment from acting on the joint portion between the tip side of the portion 1 and the elastic contact piece 2 and to apply only the shear stress to the joint interface of the soluble material 3. Therefore, it is possible to satisfactorily prevent the stress that attempts to cleave the joint interface based on the bending moment reaction force.

前記接合界面の剪断応力τは接触片２に作用する水平方向圧縮力をｐ、接合界面の面積をＳとすると、τ＝ｐ／Ｓで与えられ、接合界面の剪断強度をｆ／Ｓを越える強度とする必要がある。この剪断強度は充分な安全率を有するものでなくてはならず、このため面接合される部分の接触片２または一方のリード導体１の双方あるいは一方に、孔、窪み、切欠きを設けて可溶材３を食い込ませたり、面接合される接触片端部または一方のリード導体部分の一方または双方を粗面として接合界面の剪断強度を増強することが望ましい。また、前記可溶材３で面接合された界面を機械的に補強するために可溶材を盛り付けることもできる。 The shear stress τ of the joint interface is given by τ = p / S, where p is the horizontal compressive force acting on the contact piece 2 and S is the area of the joint interface, and the shear strength of the joint interface exceeds f / S. It needs to be strong. This shear strength must have a sufficient safety factor. For this reason, a hole, a recess, or a notch is provided in both or one of the contact piece 2 and / or one lead conductor 1 of the portion to be surface-bonded. It is desirable to increase the shear strength of the bonding interface by biting the fusible material 3 or by roughening one or both of the contact piece end portion or one lead conductor portion to be surface-bonded. Moreover, in order to reinforce the interface surface-bonded by the said soluble material 3, a soluble material can also be arranged.

前記接触片２には、金属、合成樹脂または金属と合成樹脂との複合体を用いることができる。複合体には、金属粉を混合した樹脂も含まれる。このように弾性体に金属粉混合樹脂のような電気抵抗値の高いものを使用する場合、抵抗体の過電流による通電発熱で可溶材を溶融させてプロテクタを動作させることもできる。 For the contact piece 2, a metal, a synthetic resin, or a composite of a metal and a synthetic resin can be used. The composite includes a resin mixed with metal powder. Thus, when using a thing with high electrical resistance value like a metal powder mixed resin for an elastic body, a soluble material can be fuse | melted by the energization heat_generation | fever by the overcurrent of a resistor, and a protector can also be operated.

前記可溶材３には、はんだ等の低融点可溶合金、低融点可溶単体金属または熱可塑性樹脂、或いは導電性粉末を添加した導電性熱可塑性樹脂を用いることができる。可溶材３を介しての面接合は、通電加熱や電磁誘導加熱等を用いた溶接により行うことができる。溶接界面にフラックスを塗布することが好ましい。
接触片全長の片面または両面に可溶材をコーティングして弾性体全長の曲げ剛性を均等化することは、曲げ応力の集中化防止に有効である。 The fusible material 3 may be a low melting point soluble alloy such as solder, a low melting point soluble single metal or thermoplastic resin, or a conductive thermoplastic resin to which conductive powder is added. The surface bonding through the fusible material 3 can be performed by welding using energization heating or electromagnetic induction heating. It is preferable to apply a flux to the weld interface.
Coating the fusible material on one or both sides of the entire length of the contact piece to equalize the bending rigidity of the entire length of the elastic body is effective for preventing concentration of bending stress.

図１の（イ）において、一方のリード導体部分１→接触片２→接触片２と他方のリード導体部分１０との接触面→他方のリード導体部分１０の経路で常時電気的に導通されている。
この状態において、（１）一方のリード導体部分１と接触片２との可溶材３を介しての面接合界面に作用する応力は主に一様分布の剪断応力であり、応力集中による可溶材３のクリープを排除できること、（２）接触片２の曲げに基づく反力（図２における水平方向圧縮力ｐ、曲げモーメント反力Ｍ０を参照）が一方のリード導体部分１に作用するが、そのリード導体部分１の固定や同リード導体部分１の充分な曲げ剛性のために全体を力学的に安定に保持できること等のために、他方のリード導体部分と接触片との安定な電気的接触状態を保証できる。従って、安定な電気的導通を確保できる。 In FIG. 1A, one lead conductor portion 1 → contact piece 2 → contact surface between the contact piece 2 and the other lead conductor portion 10 → the other lead conductor portion 10 is always electrically connected along the path. Yes.
In this state, (1) the stress acting on the interface between the one lead conductor portion 1 and the contact piece 2 through the fusible material 3 is mainly a uniform distribution of shear stress, and the fusible material due to stress concentration. 3) (2) A reaction force based on the bending of the contact piece 2 (see horizontal compression force p and bending moment reaction force M0 in FIG. 2) acts on one lead conductor portion 1, Stable electrical contact between the other lead conductor part and the contact piece for the purpose of fixing the lead conductor part 1 and holding the entire part mechanically and stably for sufficient bending rigidity of the lead conductor part 1 Can guarantee. Therefore, stable electrical conduction can be ensured.

前記接触片２と他方のリード導体部分１０との接触面を前記可溶材３よりも低融点の可溶金属で接合して電気接触抵抗を低くすることができる。 The contact surface between the contact piece 2 and the other lead conductor portion 10 can be joined with a fusible metal having a melting point lower than that of the fusible material 3 to reduce the electric contact resistance.

周囲温度の上昇により可溶材３が溶融乃至は軟化されると、図１の（ロ）に示すように、曲げ接触片２の可溶材３による拘束が解除され、その曲げ接触片２の弾性曲げ歪エネルギーが解放され、曲げ接触片２が元の直線状に復元されて他方のリード導体部分１０と接触片２との接触が脱離され電気的導通が遮断される。この場合、常時での曲げ接触片の弾性歪エネルギーの保持中、一方のリード導体部分が変歪されることなく初期状態のままに安定に保持されているから、導通遮断後での再導通の畏れなく確実な遮断を達成できる。 When the soluble material 3 is melted or softened due to an increase in the ambient temperature, as shown in FIG. 1B, the restriction of the bending contact piece 2 by the soluble material 3 is released, and the bending contact piece 2 is elastically bent. The strain energy is released, the bending contact piece 2 is restored to the original linear shape, the contact between the other lead conductor portion 10 and the contact piece 2 is removed, and the electrical conduction is interrupted. In this case, while holding the elastic strain energy of the bending contact piece at normal time, one lead conductor portion is stably held in the initial state without being deformed. A reliable shut-off can be achieved without drowning.

上記において、一方のリード導体部分１と接触片２との電気的導通は、可溶材３として可溶金属や導電性熱可塑性樹脂を使用する場合、可溶材により確保できる。
一方のリード導体部分１と接触片後端部２２との結着には、スポット抵抗溶接、レーザ溶接、超音波溶接、高周波溶接または電磁誘導加熱溶接等の溶接やリベッティングを使用できる。
リード導体部分と弾性接触片との溶接性を向上させるために、局部的に溶接性に優れた材料で置き換えることもできる。
可溶材３として絶縁性の熱可塑性樹脂を使用する場合、リード導体部分１と接触片後端部２２との結着箇所において電気的導通性が確保される。 In the above description, the electrical continuity between the one lead conductor portion 1 and the contact piece 2 can be ensured by a soluble material when a soluble metal or a conductive thermoplastic resin is used as the soluble material 3.
For the binding between the one lead conductor portion 1 and the contact piece rear end portion 22, welding such as spot resistance welding, laser welding, ultrasonic welding, high frequency welding or electromagnetic induction heating welding, or riveting can be used.
In order to improve the weldability between the lead conductor portion and the elastic contact piece, it can be replaced with a material that is locally excellent in weldability.
When an insulating thermoplastic resin is used as the fusible material 3, electrical continuity is ensured at the location where the lead conductor portion 1 and the contact piece rear end 22 are bonded.

図１に示す例では、接触片２の先端側２１を角度ほぼαL'で折り返し、その折り返し部を一方のリード導体部分１の先端部上面に可溶材３を介して面接合し、接触片２の後端側２２を水平方向圧縮力ｐを加えた状態で角度０にて一方のリード導体部分１の後端側に溶接やリベッティングにより結着しているが、図３の（イ）に示すように接触片２の先端側２１を接触片厚みの立ち上げ２１１を経て角度ほぼαL'で折り返し、その折り返し部を一方のリード導体部分１の先端部裏面に可溶材３を介して面接合し、接触片２の後端側２２を水平方向圧縮力ｐを加えた状態で角度０にて一方のリード導体部分１の後端側に溶接やリベッティングにより結着することもできる。また、図３の（ロ）に示すように、接触片の先端側２１を角度ほぼ（π−αL'）で折り曲げ、その折り曲げ部２１を一方のリード導体部分１の先端部上面に可溶材を介して面接合し、接触片２の後端側２２を水平方向圧縮力ｐを加えた状態で角度０にて一方のリード導体部分１に溶接やリベッティングにより結着することもできる。
図３の（イ）及び（ロ）において、接触片２の後端部２２とリード導体部分１との間の結着も可溶材を介しての面接合により行うことができる。 In the example shown in FIG. 1, the distal end side 21 of the contact piece 2 is folded back at an angle of approximately αL ′, and the folded portion is surface-bonded to the upper surface of the distal end portion of one lead conductor portion 1 via a soluble material 3. The rear end side 22 is bonded to the rear end side of one lead conductor portion 1 at an angle of 0 with a horizontal compression force p applied thereto by welding or riveting, as shown in FIG. Thus, the front end side 21 of the contact piece 2 is folded back at an angle of approximately αL ′ through the rise 211 of the contact piece thickness, and the folded portion is surface-bonded to the back surface of the front end portion of one lead conductor portion 1 via the soluble material 3. The rear end side 22 of the contact piece 2 can be bonded to the rear end side of one lead conductor portion 1 by welding or riveting at an angle of 0 in a state where the horizontal compression force p is applied. Further, as shown in FIG. 3B, the distal end side 21 of the contact piece is bent at an angle of approximately (π−αL ′), and the bent portion 21 is put on the upper surface of the distal end portion of one lead conductor portion 1 with a soluble material. The contact piece 2 can be bonded to the one lead conductor portion 1 at an angle 0 by welding or riveting in a state where a horizontal compression force p is applied.
3A and 3B, the binding between the rear end portion 22 of the contact piece 2 and the lead conductor portion 1 can also be performed by surface bonding via a fusible material.

また、図４の（イ）に示すように、接触片２の後端側２２を角度ほぼαL'で折り返し、その折り返し部２２を一方のリード導体部分１の上面に可溶材３を介して面接合し、接触片２の先端側２１を水平方向圧縮力ｐを加えた状態で角度０にて一方のリード導体部分１の先端側に溶接やリベッティングにより結着すること、図４の（ロ）に示すように、接触片２の後端側２２を角度ほぼ（π−αL'）で折り曲げ、その折り曲げ部２２を一方のリード導体部分１の上面に可溶材３を介して面接合し、接触片２の先端側２１を水平方向圧縮力ｐを加えた状態で角度０にて一方のリード導体部分１の先端側に溶接やリベッティングにより結着することも可能である。
図４の（イ）及び（ロ）において、接触片２の先端部２１とリード導体部分１との間の結着も可溶材を介しての面接合により行うことができる。 Further, as shown in FIG. 4A, the rear end side 22 of the contact piece 2 is folded back at an angle of approximately αL ′, and the folded portion 22 is interviewed via the fusible material 3 on the upper surface of one lead conductor portion 1. 4, the distal end side 21 of the contact piece 2 is bonded to the distal end side of one lead conductor portion 1 at an angle 0 with a horizontal compression force p applied, by welding or riveting, As shown in FIG. 2, the rear end side 22 of the contact piece 2 is bent at an angle of approximately (π−αL ′), and the bent portion 22 is surface-bonded to the upper surface of one lead conductor portion 1 via the fusible material 3 to make contact. It is also possible to bind the distal end side 21 of the piece 2 to the distal end side of one lead conductor portion 1 at an angle 0 with welding or riveting applied in a state where a horizontal compression force p is applied.
4A and 4B, the bonding between the tip 21 of the contact piece 2 and the lead conductor portion 1 can also be performed by surface bonding via a soluble material.

図５の（イ）〜（ハ）は本発明に係るサーモプロテクタの基本的構造の別例を示し、図５の（イ）は動作前を、図５の（ロ）は動作後をそれぞれ示し、図５の（ハ）は図５の（イ）におけるハ−ハ断面図を示している。
図５において、５はハウジング、１，１０はハウジング内に互いに上下に配置されたリード導体部分である。２は弾性を有する板状または線状の接触片であり、先端部がほぼ角度βL’で折り返されて一方のリード導体部分１の先端部上面に可溶材３を介して面接合で固定され、水平方向圧縮力ｐにより曲げ状態とされて先端側２１の撓み角βL’が後述の角度βLにほぼ等しくされている。後端側２２は同上リード導体部分１に先端側２１の撓み角βL’にほぼ等しい撓み角で可溶材３を介して面接合固定されている。曲げられた接触片２には弾性曲げ歪エネルギーが保持されている。
曲げ接触片２に前記の他方のリード導体部分１０が接触されている。
５，５はハウジング内面に突設された凸部であり、一方のリード導体部分１の巾両側がこれらの凸部５，５で押え固定されている。
図５の（イ）における、先端側２１の撓み角がβL’、後端側２２の撓み角がほぼβL’、固定点での水平方向圧縮力がｐ、高さがｈである弾性接触片２の撓み状態は、両端ヒンジ支持の支柱の水平方向圧縮力ｐによる撓み状態にほぼ等しい。 5 (a) to 5 (c) show another example of the basic structure of the thermoprotector according to the present invention, FIG. 5 (a) shows before operation, and FIG. 5 (b) shows after operation. (C) in FIG. 5 shows a cross-sectional view of the ha-ha in FIG.
In FIG. 5, 5 is a housing, and 1 and 10 are lead conductor portions arranged one above the other in the housing. Reference numeral 2 denotes an elastic plate-like or linear contact piece whose front end is folded back at an angle βL ′ and is fixed to the upper surface of the front end of one lead conductor portion 1 by surface bonding via a soluble material 3. The bending state βL ′ of the distal end side 21 is made substantially equal to an angle βL described later by being bent by the horizontal compression force p. The rear end side 22 is surface-bonded and fixed to the lead conductor portion 1 through the fusible material 3 with a bending angle substantially equal to the bending angle βL ′ of the front end side 21. The bent contact piece 2 retains elastic bending strain energy.
The other lead conductor portion 10 is in contact with the bending contact piece 2.
Reference numerals 5 and 5 denote protrusions protruding from the inner surface of the housing, and both width sides of one lead conductor portion 1 are pressed and fixed by these protrusions 5 and 5.
In FIG. 5A, an elastic contact piece having a bending angle of βL ′ at the front end side 21, a bending angle of approximately βL ′ at the rear end side 22, a horizontal compressive force p at a fixed point, and a height of h. The bending state of 2 is substantially equal to the bending state due to the horizontal compression force p of the column supported by the hinges at both ends.

図６は両端ヒンジ支持の柱（Long column）の水平方向圧縮力ｐによる撓み状態を示している。
図６において、点（ｘ，ｙ）での曲げモーメントをＭ_ｘとすると、 FIG. 6 shows a bent state due to a horizontal compression force p of a column supported by hinges at both ends.
In FIG. 6, when the bending moment at the point (x, y) is M _x ,

Ｍ_ｘ＝ｐｙ
で与えられるから、凸曲線の形状ｙは、ｐ／ＥＩ＝ｋ^２とおいて、 M _x = py
Since the convex curve shape y is p / EI = k ² ,

ｙ＝Ｂ・sinｋｘ
sinｋL＝0
で与えられ、
従って、 y = B ・ sinkx
sinkL = 0
Given in
Therefore,

ｙ＝Ｂ・sin(πｘ／L)
で与えられる。
係数Ｂはｘ＝L/2において凸曲線ｙの高さが既知のｈであることから、 y = B · sin (πx / L)
Given in.
The coefficient B is h where the height of the convex curve y is known at x = L / 2.

ｙ_ｘ＝L/2＝ｈ、（ｄｙ／ｄｘ）_ｘ＝L/2＝０
より求めることができ y _{x = L / 2} = h, (dy / dx) _{x = L / 2} = 0
Can ask more

Ｂ＝ｈ
で与えられる。
従って、ヒンジ支持端での撓み角βLは、 B = h
Given in.
Therefore, the deflection angle βL at the hinge support end is

βL＝（ｄｙ／ｄｘ）_{ｘ＝Lまたは0}＝ｈπ／L
で与えられる。 βL = (dy / dx) _{x = L or 0} = hπ / L
Given in.

図６において、ヒンジ支持端を力学的に凍結しても（両ヒンジ支持端を撓み角を同一角度のままで両固定支持に変えても）力学的状態は変わらない。
図５の（イ）において、水平方向圧縮力ｐのために一方のリード導体部分１に圧縮分力が作用するが、曲げ剛性が接触片２に較べて大なる一方のリード導体部分１がハウジング６の凸部５で押え固定されているから、一方のリード導体部分１の先端側と弾性接触片２との交点が実質的に不動とされ、従って、図５の（イ）の撓み角βL’を図６における撓み角βLにほぼ等しくすれば、図６の（イ）において一方のリード導体部分１の各端部２１，２２と弾性接触片２との接合箇所に曲げモーメントが作用するのを排除して可溶材３による接合界面に剪断応力のみを作用させることができる。従って、曲げモーメント反力に基づく接合界面を劈開しようとする応力が作用するのを良好に防止できる。 In FIG. 6, the mechanical state does not change even if the hinge support ends are dynamically frozen (even if both hinge support ends are bent at the same angle and changed to both fixed supports).
In FIG. 5A, a compressive force acts on one lead conductor portion 1 due to the horizontal compression force p, but one lead conductor portion 1 whose bending rigidity is larger than that of the contact piece 2 is a housing. 6 is fixed by the convex portion 5 so that the intersection of the tip end side of one lead conductor portion 1 and the elastic contact piece 2 is substantially immovable, and accordingly, the deflection angle βL in FIG. 6 is substantially equal to the deflection angle βL in FIG. 6, a bending moment acts on the joint between the end portions 21 and 22 of one lead conductor portion 1 and the elastic contact piece 2 in FIG. Thus, only the shear stress can be applied to the joining interface of the soluble material 3. Therefore, it is possible to satisfactorily prevent the stress that attempts to cleave the joint interface based on the bending moment reaction force.

前記した通り、接合界面の剪断応力τは弾性接触片に作用する水平方向圧縮力をｐ、接合界面の面積をＳとすると、τ＝ｐ／Ｓで与えられ、接合界面の剪断強度をｆ／Ｓを越える強度とする必要がある。この剪断強度は充分な安全率を有するものでなくてはならず、このため面接合される接触片各端部または一方のリード導体部分の双方あるいは一方に、孔、窪み、切欠きを設けて可溶材を食い込ませたり、面接合される接触片各端部または一方のリード導体部分の一方または双方を粗面として接合界面の剪断強度を増強することが望ましい。また、前記可溶材で面接合された界面を機械的に補強するために可溶材を盛り付けることもできる。 As described above, the shear stress τ at the joining interface is given by τ = p / S, where p is the horizontal compressive force acting on the elastic contact piece, and S is the area of the joining interface, and the shear strength at the joining interface is f / The strength needs to exceed S. This shear strength must have a sufficient safety factor. For this reason, holes, dents, and notches are provided in each or both ends of the contact piece to be surface-bonded and / or one lead conductor portion. It is desirable to increase the shear strength of the bonding interface by biting a fusible material or by roughening one or both ends of each of the contact pieces to be surface bonded or one lead conductor portion. Moreover, in order to reinforce mechanically the interface surface-bonded with the said soluble material, a soluble material can also be arranged.

前記接触片２には、金属、合成樹脂または金属と合成樹脂との複合体を用いることができる。
複合体には、金属粉を混合した樹脂も含まれる。このように弾性接触片に金属粉混合樹脂のような電気抵抗値の高いものを使用する場合、抵抗体の過電流による通電発熱で可溶材を溶融させてプロテクタを動作させることもできる。
前記可溶材３には、はんだ等の可溶合金、単体金属または熱可塑性樹脂、或いは導電性粉末を添加した導電性熱可塑性樹脂を用いることができる。
弾性接触片全長の片面または両面に可溶材をコーティングして弾性接触片全長の曲げ剛性を均等化することは、曲げ応力の集中化防止に有効である。 For the contact piece 2, a metal, a synthetic resin, or a composite of a metal and a synthetic resin can be used.
The composite includes a resin mixed with metal powder. Thus, when using a thing with high electrical resistance value like a metal powder mixed resin for an elastic contact piece, a soluble material can be fuse | melted by the energization heat_generation | fever by the overcurrent of a resistor, and a protector can also be operated.
As the fusible material 3, a fusible alloy such as solder, a single metal or a thermoplastic resin, or a conductive thermoplastic resin to which conductive powder is added can be used.
Coating the fusible material on one or both sides of the entire length of the elastic contact piece to equalize the bending rigidity of the entire length of the elastic contact piece is effective in preventing concentration of bending stress.

図５の（イ）において、一方のリード導体部分１→接触片２→接触片２と他方のリード導体部分１０との接触面→他方のリード導体部分１０の経路で常時電気的に導通されている。
この状態において、（１）一方のリード導体部分１と接触片２の各端部との可溶材３を介しての面接合界面に作用する応力が主に一様分布の剪断応力であり、応力集中による可溶材のクリープを排除できること、（２）接触片２の曲げに基づく反力（図６における水平方向圧縮力ｐを参照）が一方のリード導体部分１に作用するが、そのリード導体部分１の固定や同リード導体部分１の充分な曲げ剛性により全体を力学的に安定に保持できることのために、他方のリード導体部分１０と接触片２との安定な電気的接触状態を保証できる。従って、安定な電気的導通を確保できる。 In FIG. 5A, one lead conductor portion 1 → contact piece 2 → contact surface between the contact piece 2 and the other lead conductor portion 10 → the other lead conductor portion 10 is always electrically connected along the path. Yes.
In this state, (1) the stress acting on the interfacial bonding interface between the one lead conductor portion 1 and each end of the contact piece 2 through the fusible material 3 is mainly a uniformly distributed shear stress. Creep of fusible material due to concentration can be eliminated, and (2) reaction force based on bending of the contact piece 2 (see horizontal compression force p in FIG. 6) acts on one lead conductor portion 1, but the lead conductor portion Since the whole can be mechanically and stably held by fixing one and the sufficient bending rigidity of the lead conductor portion 1, a stable electrical contact state between the other lead conductor portion 10 and the contact piece 2 can be ensured. Therefore, stable electrical conduction can be ensured.

図５の（ロ）に示すように、周囲温度の上昇により可溶材３が溶融乃至は軟化されると、曲げ接触片２の可溶材３による拘束が解除され、その曲げ接触片２の弾性曲げ歪エネルギーが解放され、曲げ接触片２が元の直線状に復元され他方のリード導体部分１０と接触片２との接触が脱離されて電気的導通が遮断される。この場合、常時での曲げ接触片の弾性歪エネルギーの保持中、一方のリード導体部分１が変歪されることなく初期状態のままに安定に保持されているから、導通遮断後での再導通の畏れなく確実な遮断を達成できる。
上記において、一方のリード導体部分１と接触片２との電気的導通は、可溶材３として可溶金属や導電性熱可塑性樹脂を使用する場合、可溶材３により確保できる。 As shown in FIG. 5B, when the soluble material 3 is melted or softened due to an increase in ambient temperature, the bending contact piece 2 is released from the restraint by the soluble material 3, and the bending contact piece 2 is elastically bent. The strain energy is released, the bending contact piece 2 is restored to the original linear shape, the contact between the other lead conductor portion 10 and the contact piece 2 is released, and the electrical conduction is interrupted. In this case, while the elastic strain energy of the bending contact piece is always held, one lead conductor portion 1 is stably held in the initial state without being deformed, so that re-conduction after conduction interruption A reliable shut-off can be achieved.
In the above description, electrical continuity between one lead conductor portion 1 and the contact piece 2 can be secured by the soluble material 3 when a soluble metal or a conductive thermoplastic resin is used as the soluble material 3.

図５の（イ）に示す例では、接触片２の先端側２１を角度ほぼβL'で折り返し、接触片２の後端側２２を角度ほぼ（π−βL'）で折り曲げ、先端側折り返し部２１を一方のリード導体部分１の先端部上面に可溶材３を介して面接合し、後端側２２を水平方向圧縮力ｐを加え可溶材３を介して撓み角ほぼβL'で面接合しているが、図７の（イ）に示すように接触片２の先端側２１を接触片厚みの立ち上げ２１１を経て角度βL'で折り返し、接触片２の後端側２２を角度ほぼ（π−βL'）で折り曲げ、先端側折り返し部２１を一方のリード導体部分１の先端部上面に可溶材３を介して面接合し、後端側を水平方向圧縮力ｐを加え可溶材を介して撓み角ほぼβL'で面接合することもできる。また、図７の（ロ）に示すように、接触片２の先端側２１を角度ほぼ（π−βL'）で折り曲げ、接触片２の後端側２２を角度ほぼ（π−βL'）で折り曲げ、先端側折り曲げ部２１を一方のリード導体部分１の先端部上面に可溶材３を介して面接合し、後端側２２を水平方向圧縮力ｐを加え可溶材３を介してリード導体部分１に撓み角ほぼβL'で面接合することもできる。 In the example shown in FIG. 5A, the front end side 21 of the contact piece 2 is folded at an angle of approximately βL ′, the rear end side 22 of the contact piece 2 is folded at an angle of approximately (π−βL ′), and the front end side folded portion is formed. 21 is surface-bonded to the upper surface of the leading end of one lead conductor portion 1 via a fusible material 3, and the rear end side 22 is surface-bonded via a fusible material 3 with a horizontal compression force p applied at a bending angle of approximately βL ′. However, as shown in FIG. 7 (a), the tip side 21 of the contact piece 2 is turned back at an angle βL ′ through a rise 211 of the contact piece thickness, and the rear end side 22 of the contact piece 2 is set at an angle of approximately (π -ΒL '), the front end side folded portion 21 is surface-joined to the upper surface of the front end portion of one lead conductor portion 1 via the soluble material 3, and the rear end side is applied with the horizontal compression force p via the soluble material. Surface bonding can also be performed with a deflection angle of approximately βL ′. Further, as shown in FIG. 7B, the front end side 21 of the contact piece 2 is bent at an angle of approximately (π−βL ′), and the rear end side 22 of the contact piece 2 is bent at an angle of approximately (π−βL ′). The bent end portion 21 is joined to the upper surface of the tip end portion of one lead conductor portion 1 via a soluble material 3, and the rear end side 22 is applied with a horizontal compression force p and the lead conductor portion is interposed via the soluble material 3. 1 can be surface-bonded at a bending angle of approximately βL ′.

本発明に係るサーモプロテクタにおいては、ハウジングとして上下に分割したタイプを使用し、そのハウジング片を共通化することが好ましく、図８−１〜図８−５はその実施例を示している。
図８−１〔図８−１の（イ）は平面図、同じく（ロ）は図８−１の（イ）のロ−ロ断面図、同じく（ハ）は左側面図、同じく（ニ）は右側面図〕はハウジング片６０の一例を示し、ベース部６１の両脇に側壁部６２，６２を設け、その長手方向中央において段差６３を付け、各側壁部６２，６２の長手方向一端側にリード導体押え用凸部５，５を設け、各側壁上面の内側半分の面に超音波溶着用エネルギーダイレクタとしての三角凸条６４を設けてある。また、ベース部の一端側にハウジング片内巾よりも狭巾のリベッテング突部４を設けてある。 In the thermo protector according to the present invention, it is preferable to use a vertically divided type housing and to share the housing piece, and FIGS. 8-1 to 8-5 show the embodiments.
8-1 [(a) in FIG. 8-1 is a plan view, (b) is a cross-sectional view of (b) in FIG. 8-1, [c] is a left side view, [d] Is a right side view] shows an example of the housing piece 60. Side walls 62, 62 are provided on both sides of the base 61, a step 63 is provided in the center in the longitudinal direction, and one end in the longitudinal direction of each of the side walls 62, 62 is shown. Are provided with protrusions 5 and 5 for holding the lead conductor, and triangular protrusions 64 as an ultrasonic welding energy director are provided on the inner half of each side wall. Further, a riveting protrusion 4 having a narrower width than the inner width of the housing piece is provided on one end side of the base portion.

このハウジング片を用いて本発明に係るサーモプロテクタを製作するには、接触片付きリード導体（リード導体部分の一端側の巾は両押え用凸部６２０，６２０間の内巾に等しくするようにやや狭くしてある）に孔を穿設し、図８−２〔図８−２の（イ）は平面図、同じく（ロ）は図８−２の（イ）のロ−ロ断面図、同じく（ハ）は図８−２の（ロ）のハ−ハ断面図〕に示すように、孔を穿設した接触片２付きリード導体１を孔において一方のハウジング片６０にリベッテング突部４の加熱圧潰により固定し、また、図８−３に示すように、接触片無しのリード導体１０についても、孔を穿設しこの孔において他方のハウジング片６０にリベッテング突部４の加熱圧潰により固定し、次いで、図８−４に示すように、これら両ハウジング片を上下にかつリード導体部分１，１０のリード部の向きを逆とするように重畳して両ハウジング片６０，６０の側壁を段差６３，６３の噛み合いで勘合し、接触片付きリード導体のリード導体部分１の巾両側に他方のハウジング片のリード導体押え用凸部５，５を当接し、ついで超音波溶着機にセットし、両ハウジング片の前記エネルギーダイレクタを圧潰溶着させ、これにてサーモプロテクタの製作を終了する。
前記超音波溶着に代え、レザー溶着や接着剤を使用することも可能である。 In order to manufacture the thermo protector according to the present invention using this housing piece, the lead conductor with a contact piece (the width on one end side of the lead conductor portion is slightly equal to the inner width between the pressing convex portions 620 and 620). 8-2 [(b) in FIG. 8-2 is a plan view, and (b) is a cross-sectional view of the roll in FIG. (C) is a cross-sectional view of (B) in FIG. 8-2]. As shown in FIG. 8-2, the lead conductor 1 with the contact piece 2 having the hole formed therein is connected to the one housing piece 60 in the hole. As shown in FIG. 8-3, the lead conductor 10 without a contact piece is also provided with a hole and fixed to the other housing piece 60 by the heat crushing of the riveting protrusion 4 as shown in FIG. 8-3. Then, as shown in FIG. The lead conductor portions of the lead conductors with contact pieces are overlapped so that the direction of the lead portions of the lead conductor portions 1 and 10 is reversed and the side walls of both housing pieces 60 and 60 are engaged with each other by the engagement of the steps 63 and 63. The lead conductor pressing convex portions 5 and 5 of the other housing piece are brought into contact with both sides of the width of 1 and then set in an ultrasonic welding machine to crush and weld the energy directors of both housing pieces. Finish production.
It is also possible to use leather welding or an adhesive instead of the ultrasonic welding.

両リード導体１，１０のリード部１ｒ、１０ｒの高さレベルを合わせるように、図８−５に示すように一方のリード導体１のリード部１ｒをハウジング端面に沿い段差を経て折り曲げ加工することもできる。
図８−１〜図８−５に示したサモプロテクタの動作状態は実質的に図１または図５に示したサモプロテクタの動作状態に同じであるが、可溶材の溶融乃至は軟化により解放された接触片２の先端部が、リード導体部分１収容ハウジング片６０のリベッテング突部４の直下に潜入して他方のリード導体部分１０との再接触が確実に防止される特徴がある。 As shown in FIG. 8-5, the lead portion 1r of one lead conductor 1 is bent through a step along the end face of the housing so that the height levels of the lead portions 1r and 10r of both the lead conductors 1 and 10 are matched. You can also.
The operating state of the samo protector shown in FIGS. 8-1 to 8-5 is substantially the same as that of the samo protector shown in FIG. 1 or FIG. 5, but is released by melting or softening of the fusible material. The contact piece 2 has a feature that the front end portion of the contact piece 2 enters under the riveting protrusion 4 of the lead conductor portion 1 accommodating housing piece 60 to reliably prevent recontact with the other lead conductor portion 10.

上記弾性接触片２に用いる金属材には、例えばリン青銅を例示できる。接触片として樹脂製を使用する場合、樹脂（熱可塑性樹脂や熱硬化性樹脂）をガラス繊維、金属繊維、合成繊維等の繊維で補強したＦＲＰ、高剛性エンジニアリングプラスチック等を可溶材として使用する熱可塑性樹脂との融点との相対的な関係を考慮して選択できる。弾性材として、弾性金属材と合成樹脂との複合体、例えばリン青銅板とポリアミドフィルムとの積層体を使用することもできる。 Examples of the metal material used for the elastic contact piece 2 include phosphor bronze. When using resin as the contact piece, heat that uses FRP reinforced resin (thermoplastic resin or thermosetting resin) with fibers such as glass fiber, metal fiber, synthetic fiber, high-rigidity engineering plastic, etc. as soluble material The selection can be made in consideration of the relative relationship with the melting point of the plastic resin. As the elastic material, a composite of an elastic metal material and a synthetic resin, for example, a laminate of a phosphor bronze plate and a polyamide film can be used.

接触片２の寸法は、金属弾性板の場合、例えば厚み０．００８〜０．１ｍｍ、巾０．３〜４．６ｍｍ、長さ１．５〜１１ｍｍとされる。 In the case of a metal elastic plate, the dimensions of the contact piece 2 are, for example, a thickness of 0.008 to 0.1 mm, a width of 0.3 to 4.6 mm, and a length of 1.5 to 11 mm.

上記弾性接触片２としての樹脂や可溶材３としての熱可塑性樹脂としては、ポリエチレンテレフタレ−ト、ポリエチレンナフタレ−ト、ポリアミド、ポリイミド、ポリブチレンテレフタレ−ト、ポリフェニレンオキシド、ポリエチレンサルファイド、ポリサルホン等のエンジニアリングプラスチック、ポリアセタ−ル、ポリカ−ボネ−ト、ポリフェニレンスルフィド、ポリオキシベンゾイル、ポリエ−テルエ−テルケトン、ポリエ−テルイミド等のエンジニアリングプラスチックやポリプロピレン、ポリ塩化ビニル、ポリ酢酸ビニル、ポリメチルメタクリレ−ト、ポリ塩化ビニリデン、ポリテトラフルオロエチレン、エチレンポリテトラフルオロエチレン共重合体、エチレン酢酸ビニル共重合体（ＥＶＡ）、ＡＳ樹脂、ＡＢＳ樹脂、アイオノマ−、ＡＡＳ樹脂、ＡＣＳ樹脂等中から所定融点のものを選定できる。
ハウジングには、これらの樹脂の外、セラミックスも使用できる。ハウジングの寸法は、例えば厚み０．３〜１．５ｍｍ、巾１〜５ｍｍ、長さ２〜１２ｍｍとされる。 Examples of the resin as the elastic contact piece 2 and the thermoplastic resin as the soluble material 3 include polyethylene terephthalate, polyethylene naphthalate, polyamide, polyimide, polybutylene terephthalate, polyphenylene oxide, polyethylene sulfide, and polysulfone. Engineering plastics such as engineering plastics, polyacetal, polycarbonate, polyphenylene sulfide, polyoxybenzoyl, polyether ether ketone, polyetherimide, etc., polypropylene, polyvinyl chloride, polyvinyl acetate, polymethyl methacrylate -To, polyvinylidene chloride, polytetrafluoroethylene, ethylene polytetrafluoroethylene copolymer, ethylene vinyl acetate copolymer (EVA), AS resin, ABS resin, iono -, it can be selected ones AAS resin, from in ACS resin of a predetermined melting point.
In addition to these resins, ceramics can also be used for the housing. The dimensions of the housing are, for example, a thickness of 0.3 to 1.5 mm, a width of 1 to 5 mm, and a length of 2 to 12 mm.

上記可溶材としての可溶合金としては、ＰｂやＣｄ等の生体系に有害な元素を含まないものを使用することが好ましく、次ぎの組成[Ａ]（１）４３％＜Ｓｎ≦７０％，０．５％≦Ｉｎ≦１０％，残Ｂｉ、（２）２５％≦Ｓｎ≦４０％，５０％≦Ｉｎ≦５５％，残Ｂｉ、（３）２５％＜Ｓｎ≦４４％，５５％＜Ｉｎ≦７４％，１％≦Ｂｉ＜２０％、（４）４６％＜Ｓｎ≦７０％，１８％≦Ｉｎ＜４８％，１％≦Ｂｉ≦１２％、（５）５％≦Ｓｎ≦２８％，１５％≦Ｉｎ＜３７％，残Ｂｉ（但し、Ｂｉ５７．５％，Ｉｎ２５．２％，Ｓｎ１７．３％とＢｉ５４％，Ｉｎ２９．７％，Ｓｎ１６．３％のそれぞれを基準にＢｉ±２％，Ｉｎ及びＳｎ±１％の範囲を除く）、（６）１０％≦Ｓｎ≦１８％，３７％≦Ｉｎ≦４３％，残Ｂｉ、（７）２５％＜Ｓｎ≦６０％，２０％≦Ｉｎ＜５０％，１２％＜Ｂｉ≦３３％、（８）（１）〜（７）の何れか１００重量部にＡｇ、Ａｕ、Ｃｕ、Ｎｉ、Ｐｄ、Ｐｔ、Ｓｂ、Ｇａ、Ｇｅ、Ｐの１種または２種以上を合計０．０１〜７重量部添加、（９）３３％≦Ｓｎ≦４３％，０．５％≦Ｉｎ≦１０％，残Ｂｉ、（１０）４７％≦Ｓｎ≦４９％，５１％≦Ｉｎ≦５３％の１００重量部にＢｉを３〜５重量部を添加、（１１）４０％≦Ｓｎ≦４６％，７％≦Ｂｉ≦１２％，残Ｉｎ、（１２）０．３％≦Ｓｎ≦１．５％，５１％≦Ｉｎ≦５４％，残Ｂｉ、（１３）２．５％≦Ｓｎ≦１０％，２５％≦Ｂｉ≦３５％，残Ｉｎ、（１４）（９）〜（１３）の何れか１００重量部にＡｇ、Ａｕ、Ｃｕ、Ｎｉ、Ｐｄ、Ｐｔ、Ｓｂ、Ｇａ、Ｇｅ、Ｐの１種または２種以上を合計０．０１〜７重量部添加、（１５）１０％≦Ｓｎ≦２５％，４８％≦Ｉｎ≦６０％，残Ｂｉを１００重量部にＡｇ、Ａｕ、Ｃｕ、Ｎｉ、Ｐｄ、Ｐｔ、Ｓｂ、Ｇａ、Ｇｅ、Ｐの１種または２種以上を合計０．０１〜７重量部添加、等のＩｎ−Ｓｎ−Ｂｉ系合金の組成[Ｂ]（１６）３０％≦Ｓｎ≦７０％，０．３％≦Ｓｂ≦２０％，残Ｂｉ、（１７）（１６）の１００重量部にＡｇ、Ａｕ、Ｃｕ、Ｎｉ、Ｐｄ、Ｐｔ、Ｇａ、Ｇｅ、Ｐの１種または２種以上を合計０．０１〜７重量部添加、等のＢｉ−Ｓｎ−Ｓｂ系合金の組成[Ｃ]（１８）５２％≦Ｉｎ≦８５％，残Ｓｎ、（１９）（１８）の１００重量部にＡｇ、Ａｕ、Ｃｕ、Ｎｉ、Ｐｄ、Ｐｔ、Ｓｂ、Ｇａ、Ｇｅ、Ｐの１種または２種以上を合計０．０１〜７重量部添加、等のＩｎ−Ｓｎ系合金の組成[Ｄ]（２０）４５％≦Ｂｉ≦５５％，残Ｉｎ、（２１）（２０）の組成の１００重量部にＡｇ、Ａｕ、Ｃｕ、Ｎｉ、Ｐｄ、Ｐｔ、Ｓｂ、Ｇａ、Ｇｅ、Ｐの１種または２種以上を合計０．０１〜７重量部添加、等のＩｎ−Ｂｉ系合金の組成、[Ｅ]（２２）５０％Ｂｉ≦５６％，残Ｓｎ、（２３）（２２）の１００重量部にＡｇ、Ａｕ、Ｃｕ、Ｎｉ、Ｐｄ、Ｐｔ、Ｇａ、Ｇｅ、Ｐの１種または２種以上を合計０．０１〜７重量部添加、等のＢｉ−Ｓｎ系合金の組成[Ｆ]（２４）Ｉｎの１００重量部にＡｕ、Ｂｉ、Ｃｕ、Ｎｉ、Ｐｄ、Ｐｔ、Ｇａ、Ｇｅ、Ｐの１種または２種以上を合計０．０１〜７重量部添加、（２５）９０％≦Ｉｎ≦９９．９％，０．１％≦Ａｇ≦１０％の１００重量部にＡｕ、Ｂｉ、Ｃｕ、Ｎｉ、Ｐｄ、Ｐｔ、、Ｇａ、Ｇｅ、Ｐの１種または２種以上を合計０．０１〜７重量部添加、（２６）９５％≦Ｉｎ≦９９．９％，０．１％≦Ｓｂ≦５％の１００重量部にＡｕ、Ｂｉ、Ｃｕ、Ｎｉ、Ｐｄ、Ｐｔ、Ｇａ、Ｇｅ、Ｐの１種または２種以上を合計０．０１〜７重量部添加等のＩｎ系合金の組成（２７）２％≦Ｚｎ≦１５％，７０％≦Ｓｎ≦９５％，残Ｂｉ及びその合金１００重量部にＡｕ、Ｉｎ、Ｃｕ、Ｎｉ、Ｐｄ、Ｐｔ、Ｇａ、Ｇｅ、Ｐの１種または２種以上を合計０．０１〜７重量部添加した合金の組成等からサーモプロテクタの動作温度に適合した融点の組成を選定することができる。
また、可溶合金にｂ．ｃ．ｃやｃ．ｐ．ｈ等の結晶構造の金属を多く含ませることにより塑性変形を抑止しクリープ強度を向上させることができる。 As the soluble alloy as the soluble material, it is preferable to use an alloy that does not contain elements harmful to biological systems such as Pb and Cd. The following composition [A] (1) 43% <Sn ≦ 70%, 0.5% ≦ In ≦ 10%, remaining Bi, (2) 25% ≦ Sn ≦ 40%, 50% ≦ In ≦ 55%, remaining Bi, (3) 25% <Sn ≦ 44%, 55% <In ≦ 74%, 1% ≦ Bi <20%, (4) 46% <Sn ≦ 70%, 18% ≦ In <48%, 1% ≦ Bi ≦ 12%, (5) 5% ≦ Sn ≦ 28%, 15% ≦ In <37%, remaining Bi (however, Bi57.5%, In25.2%, Sn17.3% and Bi54%, In29.7%, Sn16.3% based on Bi ± 2%, (Except for the range of In and Sn ± 1%), (6) 10% ≦ Sn ≦ 18%, 37% ≦ In ≦ 43%, remaining Bi, (7) 25% < n ≦ 60%, 20% ≦ In <50%, 12% <Bi ≦ 33%, (8) Ag, Au, Cu, Ni, Pd, Pt, 100 parts by weight of any one of (1) to (7) Add one or more of Sb, Ga, Ge, and P in a total of 0.01 to 7 parts by weight, (9) 33% ≦ Sn ≦ 43%, 0.5% ≦ In ≦ 10%, remaining Bi, ( 10) Add 3-5 parts by weight of Bi to 100 parts by weight of 47% ≦ Sn ≦ 49%, 51% ≦ In ≦ 53%, (11) 40% ≦ Sn ≦ 46%, 7% ≦ Bi ≦ 12% , Remaining In, (12) 0.3% ≦ Sn ≦ 1.5%, 51% ≦ In ≦ 54%, remaining Bi, (13) 2.5% ≦ Sn ≦ 10%, 25% ≦ Bi ≦ 35% , Remaining In, (14) any one or more of Ag, Au, Cu, Ni, Pd, Pt, Sb, Ga, Ge, P in 100 parts by weight of any one of (14), (9) to (13) 0.01 to 7 parts by weight in total, (15) 10% ≦ Sn ≦ 25%, 48% ≦ In ≦ 60%, 100 parts by weight of the remaining Bi is Ag, Au, Cu, Ni, Pd, Pt, Sb, In-Sn-Bi based alloy composition [B] (16) 30% ≦ Sn ≦ 70%, such as addition of 0.01 to 7 parts by weight of one or more of Ga, Ge, and P in total. 3% .ltoreq.Sb.ltoreq.20%, the balance Bi, (17) (16), 100 parts by weight of Ag, Au, Cu, Ni, Pd, Pt, Ga, Ge, P or a total of 0.1 or more. Composition of Bi—Sn—Sb alloy such as addition of 01 to 7 parts by weight [C] (18) 52% ≦ In ≦ 85%, remaining Sn, (19) In 100 parts by weight of (18), Ag, Au, In-Sn based compounds such as addition of 0.01 to 7 parts by weight of one or more of Cu, Ni, Pd, Pt, Sb, Ga, Ge, and P [D] (20) 45% ≦ Bi ≦ 55%, remaining In, (21) Ag, Au, Cu, Ni, Pd, Pt, Sb, Ga, Ge, 100 parts by weight of the composition of (20) Composition of In-Bi alloy such as addition of 0.01 to 7 parts by weight of one or more of P, [E] (22) 50% Bi ≦ 56%, remaining Sn, (23) (22 The composition of a Bi-Sn alloy such as Ag, Au, Cu, Ni, Pd, Pt, Ga, Ge, P is added in a total of 0.01 to 7 parts by weight to 100 parts by weight of [F] (24) Add one or more of Au, Bi, Cu, Ni, Pd, Pt, Ga, Ge, and P to 100 parts by weight of In, in total 0.01 to 7 parts by weight, (25) Au, Bi, Cu, Ni, Pd, Pt, Ga, G in 100 parts by weight of 90% ≦ In ≦ 99.9%, 0.1% ≦ Ag ≦ 10% e, one or more of P are added in a total of 0.01 to 7 parts by weight, (26) Au in 100 parts by weight of 95% ≦ In ≦ 99.9%, 0.1% ≦ Sb ≦ 5%, Composition of In-based alloy such as addition of 0.01 to 7 parts by weight of one or more of Bi, Cu, Ni, Pd, Pt, Ga, Ge, and P (27) 2% ≦ Zn ≦ 15%, 70% ≦ Sn ≦ 95%, the remaining Bi and its alloy 100 parts by weight, total of 0.01 to 7 parts by weight of one or more of Au, In, Cu, Ni, Pd, Pt, Ga, Ge, P A composition having a melting point suitable for the operating temperature of the thermoprotector can be selected from the composition of the added alloy.
Moreover, b. c. c and c. p. By containing a large amount of metal having a crystal structure such as h, plastic deformation can be suppressed and the creep strength can be improved.

これらの合金、特に、Ｂｉリッチ合金の場合は、金属接触片に予め層状に被覆しておくことが好ましい。 In the case of these alloys, particularly Bi-rich alloys, it is preferable to coat the metal contact pieces in layers.

上記のリード導体には、ニッケル、銅、銅合金等の導電性金属乃至は合金を使用でき、必要に応じ鍍金することができる。 For the lead conductor, a conductive metal or alloy such as nickel, copper, or copper alloy can be used, and can be plated as necessary.

リチウムイオン２次電池、リチウムポリマー２次電池等に対する電池パックにおいては、電池や電力トランジスター等の異常発熱を検知して不通電とするサーモプロテクタが必要であるが、本発明に係るサーモプロテクタにおいては小型化が容易であり電池パックに良好に組み込み得、その電池用サーモプロテクタとして好適に利用できる。 In battery packs for lithium ion secondary batteries, lithium polymer secondary batteries, etc., a thermo protector for detecting abnormal heat generation such as a battery or a power transistor and de-energizing is necessary. In the thermo protector according to the present invention, however, Miniaturization is easy, it can be incorporated well into a battery pack, and it can be suitably used as a thermo-protector for the battery.

本発明に係るサーモプロテクタの基本的構成を示す図面である。It is drawing which shows the basic composition of the thermo protector which concerns on this invention. 一端ヒンジ支持・他端固定の柱の力学的状態を示す図面である。It is drawing which shows the mechanical state of the pillar of one end hinge support and other end fixation. 図１に示すサーモプロテクタに使用される弾性接触片付きリード導体の別例を示す図面である。It is drawing which shows another example of the lead conductor with an elastic contact piece used for the thermo protector shown in FIG. 図１に示すサーモプロテクタに使用される弾性接触片付きリード導体の上記とは別の例を示す図面である。It is drawing which shows an example different from the above of the lead conductor with an elastic contact piece used for the thermo protector shown in FIG. 本発明に係るサーモプロテクタの上記とは別の基本的構成を示す図面である。It is drawing which shows the fundamental structure different from the above of the thermoprotector which concerns on this invention. 両端ヒンジ支持の柱の力学的状態を示す図面である。It is drawing which shows the mechanical state of the pillar of both-ends hinge support. 図５に示すサーモプロテクタに使用される弾性接触片付きリード導体の別例を示す図面である。It is drawing which shows another example of the lead conductor with an elastic contact piece used for the thermo protector shown in FIG. 本発明に係るサーモプロテクタに使用するハウジング片の一例を示す図面である。It is drawing which shows an example of the housing piece used for the thermoprotector which concerns on this invention. 図８−１のハウジング片を用いてサーモプロテクタを製作する場合の工程の一部を示す図面である。It is drawing which shows a part of process in the case of manufacturing a thermo protector using the housing piece of FIGS. 図８−１のハウジング片を用いてサーモプロテクタを製作する場合の工程の上記とは別の一部を示す図面である。It is drawing which shows a part different from the above of the process in the case of manufacturing a thermoprotector using the housing piece of FIGS. 図８−１のハウジング片を用いてサーモプロテクタを製作する場合の工程の上記とは別の一部を示す図面である。It is drawing which shows a part different from the above of the process in the case of manufacturing a thermoprotector using the housing piece of FIGS. 図８−１のハウジング片を用いてサーモプロテクタの一実施例を示す図面である。It is drawing which shows one Example of a thermo protector using the housing piece of FIGS. 従来のサーモプロテクタを示す図面である。It is drawing which shows the conventional thermo protector. 上記とは別の従来のサーモプロテクタを示す図面である。It is drawing which shows the conventional thermo protector different from the above.

Explanation of symbols

１一方のリード導体部分
１０他方のリード導体部分
２接触片
２１接触片の一端部
２２接触片の他端部
３可溶材
４リベッティグまたは溶接箇所
５リード導体押え用凸部
６ハウジング DESCRIPTION OF SYMBOLS 1 One lead conductor part 10 The other lead conductor part 2 Contact piece 21 One end part 22 of a contact piece The other end part 3 of a contact piece Soluble material 4 Riveting or welding place 5 Lead conductor holding convex part 6 Housing

Claims

A contact piece having elasticity is fixed to one of the lead conductor portions of the two lead conductor portions accommodated in the housing above and below each other in a bent state holding elastic strain energy, and at least one of the fixings is a soluble material The width of the one lead conductor part is pressed by the convex part of the inner surface of the housing, and the other lead conductor part is brought into contact with the bent contact piece. The thermo-protector is characterized in that the elastic strain energy is released by melting or softening the fusible material and electrical conduction between the lead conductors is interrupted.

2. The thermo protector according to claim 1, wherein the bending rigidity of one lead conductor portion is 10 times or more of the bending rigidity of the contact piece having elasticity.

The elastic contact piece is elastically deformed into a convex curve on the other lead conductor portion side, one end of the contact piece is folded back, and the folded portion is surface-bonded to one lead conductor portion via a soluble material. The thermoprotector according to claim 1, wherein the thermoprotector is provided.

The thermoprotector according to any one of claims 1 to 3, wherein the soluble material is a low melting point metal.

The fusible material at the surface joint between one end of the contact piece and one lead conductor is a thermoplastic resin, and the other end of the contact piece and one lead conductor are fixed under electrical continuity. The thermo protector according to claim 1, wherein the thermo protector is provided.

6. The thermoprotector according to claim 1, wherein the contact piece having elasticity is a metal or a polymer or a composite of a metal and a resin.

The housing is divided into upper and lower parts, one lead conductor part to which an elastic contact piece is fixed is accommodated in one split housing part, and the other lead conductor part is contained in the other split housing part. The thermo-protector according to any one of claims 1 to 6, wherein the thermo-protector is accommodated, and both divided housing pieces are combined and both width sides of one lead conductor portion are pressed by convex portions on the inner surface of the other divided housing. .

The thermo-protector according to claim 7, wherein the upper and lower divided housing pieces are common.