JPH0495324A - Thermal protector - Google Patents
Thermal protectorInfo
- Publication number
- JPH0495324A JPH0495324A JP20328690A JP20328690A JPH0495324A JP H0495324 A JPH0495324 A JP H0495324A JP 20328690 A JP20328690 A JP 20328690A JP 20328690 A JP20328690 A JP 20328690A JP H0495324 A JPH0495324 A JP H0495324A
- Authority
- JP
- Japan
- Prior art keywords
- fixed
- plate
- electrode plate
- movable
- movable electrode
- 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.)
- Granted
Links
- 230000001012 protector Effects 0.000 title claims description 19
- 210000000078 claw Anatomy 0.000 claims abstract description 12
- 239000011347 resin Substances 0.000 abstract description 7
- 229920005989 resin Polymers 0.000 abstract description 7
- 238000005452 bending Methods 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 239000011521 glass Substances 0.000 description 7
- 230000002159 abnormal effect Effects 0.000 description 5
- 238000009413 insulation Methods 0.000 description 5
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 4
- 244000144992 flock Species 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 244000062175 Fittonia argyroneura Species 0.000 description 1
- 108091027981 Response element Proteins 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- DMFGNRRURHSENX-UHFFFAOYSA-N beryllium copper Chemical compound [Be].[Cu] DMFGNRRURHSENX-UHFFFAOYSA-N 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/32—Thermally-sensitive members
- H01H37/52—Thermally-sensitive members actuated due to deflection of bimetallic element
- H01H37/54—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting
- H01H2037/5481—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting the bimetallic snap element being mounted on the contact spring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/32—Thermally-sensitive members
- H01H37/52—Thermally-sensitive members actuated due to deflection of bimetallic element
- H01H37/54—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting
- H01H37/5427—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting encapsulated in sealed miniaturised housing
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は各種電気機器、例えばモータまたは蛍光灯安定
器等に用いられ、異常時の発熱および過電流等による電
気機器の焼損防止のためのサーマルプロテクタ、特に小
型のサーマルプロテクタに関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is used in various electrical equipment, such as motors or fluorescent lamp ballasts, and is used as a thermal protector to prevent burnout of electrical equipment due to abnormal heat generation and overcurrent. , especially regarding small thermal protectors.
従来の技術
従来のサーマルプロテクタとして第６図（ａ）、 （ｂ
ｌに示すような構成を有しているものが知られている（
特開昭５９−１８９５２０号公報）。このサーマルプロ
テクタにおいて、可動電極体は、第７図に示すように、
ばね性を有する可動電極プレート１２の先端に可動接点
１３を固着し、可動電極プレート１２の背面に熱応動素
子板１４を固定して一体化されている。そして、この固
定は、可動電極プレート１２の支持部１２ａ、１２ｂ１
２ｃによって囲まれた部分に熱応動素子板１４を入れて
可動電極プレート１２の背面に位置させ、これらの支持
部１２ａ、１２ｂをかしめることによって行われている
。この場合、熱応動素子板１４の反転および復帰動作に
支障がないよう、熱応動素子板１４は可動電極プレート
１２の支持部１２ａ、１２ｂ、１２ｃに対し、わずかの
裕度を持って動くことができるようになっている。さら
に、可動側リード線１５に可動電極プレート１２の溶接
部１２ｄを固着して、可動電極体を構成する。一方、固
定接点１６を固定側リード線１７に固着して固定電極体
を構成し、これらの電極体を可動接点１３と固定接点１
６が対向するように位置させ、ガラスビード１８にて一
体化し、マウント体ヲ構成している。このマウント体は
ガラス容器１９に収納し、この中に窒素等の不活性ガス
を封入し、ガラス容器１９の端部を加熱して封止されて
いる。Conventional technology Figures 6(a) and 6(b) show a conventional thermal protector.
A device having the configuration shown in l is known (
(Japanese Unexamined Patent Publication No. 189520/1983). In this thermal protector, the movable electrode body is as shown in FIG.
A movable contact 13 is fixed to the tip of a movable electrode plate 12 having spring properties, and a thermally responsive element plate 14 is fixed to the back surface of the movable electrode plate 12 so as to be integrated. This fixation is performed by supporting parts 12a and 12b1 of movable electrode plate 12.
This is done by inserting the thermally responsive element plate 14 into the area surrounded by 2c and positioning it on the back side of the movable electrode plate 12, and caulking these support parts 12a and 12b. In this case, the thermally responsive element plate 14 may be moved with a slight margin with respect to the support portions 12a, 12b, and 12c of the movable electrode plate 12 so that the reversal and return operations of the thermally responsive element plate 14 are not hindered. It is now possible to do so. Further, the welded portion 12d of the movable electrode plate 12 is fixed to the movable lead wire 15 to form a movable electrode body. On the other hand, the fixed contact 16 is fixed to the fixed lead wire 17 to constitute a fixed electrode body, and these electrode bodies are connected to the movable contact 13 and the fixed contact 1.
6 are positioned so as to face each other, and are integrated with a glass bead 18 to form a mount body. This mount body is housed in a glass container 19, which is filled with an inert gas such as nitrogen, and the ends of the glass container 19 are heated and sealed.
このような構成を有するサーマルプロテクタは、モータ
等に取り付けられ、異常時の温度過昇および過電流に感
応して、熱応動素子板１４が反転復帰動作を行い、かつ
可動電極プレート１２か対応した動作を行って、可動接
点１３と固定接点１６の開閉を行いモータ等の焼損を防
止する機能を持っている。The thermal protector having such a configuration is attached to a motor or the like, and the thermally responsive element plate 14 performs an inversion return operation in response to an abnormal temperature rise and overcurrent, and the movable electrode plate 12 responds to the abnormal temperature rise and overcurrent. It has the function of opening and closing the movable contact 13 and the fixed contact 16 and preventing burnout of the motor and the like.
発明が解決しようとする課題
このような構造のサーマルプロテクタは、小型化してい
く場合、容器の容積が小さくなるために、ガラス容器１
９と熱応動素子板１４との隙間も小さくなり、熱応動素
子板１４が動いた際に熱応動素子板１４がガラス容器１
９に接触し、正常な反転復帰動作を起こさないという重
大な欠点かあった。また、このサーマルプロテクタでは
、可動電極プレート１２に対し熱応動素子板１４がわず
かの裕度を持って動くようにしであるために、サーマル
プロテクタを手に持って振った場合、熱応動素子板１４
が移動してガラス容器１９に当たってカチ カチという
ような音が出るという欠点があった。Problems to be Solved by the Invention When a thermal protector having such a structure is miniaturized, the volume of the container becomes smaller, so the size of the glass container 1 is reduced.
The gap between the thermally responsive element plate 9 and the thermally responsive element plate 14 is also reduced, so that when the thermally responsive element plate 14 moves, the thermally responsive element plate 14 closes to the glass container 1.
9, which caused a serious drawback in that the normal reverse return operation did not occur. In addition, in this thermal protector, since the thermally responsive element plate 14 is designed to move with a slight margin with respect to the movable electrode plate 12, when the thermal protector is held in hand and shaken, the thermally responsive element plate 14
There was a drawback that the glass container 19 moved and hit the glass container 19, producing a clicking sound.
本発明はこのような問題点を解決するためになされたも
ので、モータや蛍光灯安定器等に使用しても異常な反転
復帰動作を引き起こすおそれかなく、またサーマルプロ
テクタを手に持って振っても音がしない高品質の小型の
サーマルプロテクタを提供するものである。The present invention was made to solve these problems, and there is no risk of abnormal reverse return operation even when used in motors, fluorescent lamp ballasts, etc., and the thermal protector can be held in the hand and shaken. This provides a high-quality, compact thermal protector that does not make any noise.
課題を解決するための手段
本発明のサーマルプロテクタは、固定接点を一端部に固
着した固定電極プレートを備えた固定電極体と、固定端
部に複数個の穴を有し、かつ可動端部に前記固定接点に
対し接離する可動接点を先端部に固着した可動電極プレ
ートを備えたばね性を有する可動電極体とを対向させ、
前記固定電極プレートの他端部を、前記可動電極体に向
かって延びる複数個の支柱を設けた一方の樹脂製の絶縁
ブロックに貫通固着し、前記一方の絶縁ブロックと前記
複数個の支柱が挿通ずる複数個の穴を有する他方の樹脂
製の絶縁ブロック゛との間に、前記可動電極プレートの
固定端部と、前記可動電極プレートの背面に沿って設け
られ、かつこの可動電極プレートの先端部を前記背面側
に折り返して形成された爪部で可動端部がわずかの裕度
を持って係止された熱応動素子板の複数個の穴を有する
固定端部とを設け、かつ前記一方の絶縁ブロックの支柱
を前記可動電極プレートおよび前記熱応動素子板の各々
の穴を通して前記他方の絶縁ブロックの穴にそれぞれ挿
通させ、前記穴から突出した前記支柱の先端部をかしめ
ることにより前記一対の絶縁ブロックで前記固定電極プ
レートの他端部と、前記可動電極プレートの固定端部と
、前記熱応動素子板の固定端部とを挟んで一体化してな
るマウント体を容器内に設けたものである。Means for Solving the Problems The thermal protector of the present invention includes a fixed electrode body including a fixed electrode plate having a fixed contact fixed to one end thereof, a plurality of holes in the fixed end, and a fixed electrode plate having a fixed contact fixed to one end thereof. A movable electrode body having a spring property and having a movable electrode plate having a movable contact fixed to the tip thereof and having a movable contact that comes into contact with and separates from the fixed contact is opposed to the movable electrode body,
The other end of the fixed electrode plate is penetrated and fixed to one resin insulating block provided with a plurality of columns extending toward the movable electrode body, and the one insulating block and the plurality of columns are inserted. A fixed end portion of the movable electrode plate is provided along the back surface of the movable electrode plate between the other insulating block made of resin and has a plurality of holes that communicate with each other, and the tip portion of the movable electrode plate is a fixed end portion having a plurality of holes of the thermally responsive element plate, the movable end portion of which is locked with a slight margin by a claw portion formed by folding back to the back side; The pillars of the block are inserted through the holes of the movable electrode plate and the thermally responsive element plate into the holes of the other insulating block, respectively, and the tips of the pillars protruding from the holes are caulked to insulate the pair of insulation blocks. A mount body is provided in the container, which is formed by integrating the other end of the fixed electrode plate, the fixed end of the movable electrode plate, and the fixed end of the thermally responsive element plate between blocks. .
作用
本発明は、サーマルプロテクタに振動や衝撃を加えた場
合に熱応動素子板が動いて音が出たり、また熱応動素子
板が容器の内壁面に接触して正常な反転復帰動作を起こ
さなくなること等を防ぐために、熱応動素子板の可動端
部の先端は可動電極プレートを背面側に折り返して形成
した爪部にわずかの裕度を持って係止し、かつ固定端部
は可動電極プレートの固定端部とともに固定電極プレー
トを樹脂成形した絶縁ブロックと押え用絶縁フロックと
で挟んで絶縁ブロックの支柱をかしめて固定している。Function The present invention prevents the thermal protector from moving when vibration or shock is applied to it, causing the thermally responsive element plate to move and make noise, or to cause the thermally responsive element plate to come into contact with the inner wall surface of the container, preventing normal inversion and return operation. In order to prevent this, the tip of the movable end of the thermally responsive element plate is locked with a slight margin to the claw formed by folding back the movable electrode plate, and the fixed end is fixed to the claw formed by folding back the movable electrode plate. The fixed electrode plate and the fixed end portion of the electrode plate are sandwiched between a resin-molded insulating block and an insulating flock for holding down, and the supports of the insulating block are caulked and fixed.
その結果、熱応動素子板の可動端部は可動しやすく係止
され、かつ固定端部は固く位置決め固定されるために熱
応動素子板か不要な方向に動かず、熱応動素子板を安定
させることができる。As a result, the movable end of the thermally responsive element plate is easily movable and locked, and the fixed end is firmly positioned and fixed, so the thermally responsive element plate does not move in unnecessary directions, and the thermally responsive element plate is stabilized. be able to.
実施例
以下、本発明の一実施例について図面を用いて説明する
。EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings.
第１図（ａｔ、 （ｂｌ、第２図（ａｌ、 （ｂ）、第
３図（ａ） 、 ’（ｂｌ、第４図（ａｔ、 （ｂｌ、
第５図（ａｔ、 （ｂ）において、銀糸からなる固定接
点１を一端部に溶接により固着した黄銅板からなる固定
電極プレート２を備えた固定電極体と、固定端部に２つ
の穴３ａ、３ｂを有し、中央部にダボ部３ｃを設け、か
つ可動端部に固定接点１に対し接離する銀系からなる可
動接点４を先端部に溶接により固着した可動電極プレー
ト３を備え、さらに先端を可動接点４側とは反対方向へ
折り返して形成された爪部３ｄを形成したばね性を有す
る薄いベリリウム銅板からなる可動電極体とを対向させ
ている。固定電極プレート２の他端部を、前記可動電極
体に向かって延びる２つの支柱５ａ、５ｂを設けた一方
のＰＢＴ樹脂製の絶縁フロック５に貫通固着し、一方の
絶縁プロ、り５と支柱５ａ、５ｂがそれぞれ挿通する２
つの穴６ａ、６ｂを有する一他方のＰＢＴ樹脂製の絶縁
フロック６との間に、可動電極プレート３の固定端部と
、可動電極プレート３の背面に沿って設けられ、かつこ
の可動電極プレートの先端部を前記背面側に折り返して
形成された爪部３ｄで可動端部がわずかの裕度を持って
係止されたバイメタルからなる熱応動素子板７の２つの
穴７ａ、７ｂを有する固定端部とを設けている。ここで
、熱応動素子板７はスナンブアクンヨン動作を行うため
と、両接点の開成時、可動接点４か固定接点１を押圧す
るごとくの圧力を生しるために、湾曲している。Figure 1 (at, (bl), Figure 2 (al, (b), Figure 3 (a), '(bl, Figure 4 (at, (bl,
In FIGS. 5(at) and 5(b), a fixed electrode body includes a fixed electrode plate 2 made of a brass plate to which a fixed contact 1 made of silver thread is fixed by welding to one end, two holes 3a at the fixed end, 3b, provided with a dowel portion 3c in the center, and a movable electrode plate 3 having a movable contact 4 made of a silver base that contacts and separates from the fixed contact 1 at the movable end fixed by welding to the tip, and further The movable electrode body is made of a thin beryllium copper plate having spring properties and has a claw portion 3d formed by folding its tip back in the direction opposite to the movable contact 4 side.The other end of the fixed electrode plate 2 is , two columns 5a and 5b extending toward the movable electrode body are fixed to one PBT resin insulating flock 5, and one insulation block 5 and the columns 5a and 5b are inserted through the two.
A fixed end portion of the movable electrode plate 3 is provided along the back surface of the movable electrode plate 3 between the other insulating flock 6 made of PBT resin having two holes 6a and 6b, and the movable electrode plate A fixed end having two holes 7a and 7b of a thermally responsive element plate 7 made of a bimetal whose movable end is locked with a slight margin by a claw portion 3d formed by folding the tip end toward the back side. We have established a department. Here, the thermally-responsive element plate 7 is curved in order to perform a snub action and to generate pressure to press either the movable contact 4 or the fixed contact 1 when both contacts are opened.
そして、一方の絶縁ブロフク５の支柱５ａ、５ｂを可動
電極プレート３および熱応動素子板７の各式を通して他
方の絶縁ブロンクロの穴６ａ、６ｂに挿通させ、これら
の穴から突出した支柱５ａ５ｂの先端部を超音波溶接で
かしめて皿状に変形させることにより一対の絶縁ブロッ
ク５．６で固定電極プレート２の他端部と、可動電極プ
レート３の固定端部と、熱応動素子板７の固定端部とを
挟んで一体化している。さらに、固定電極プレート２の
固定端部の先端に被覆リード線８を溶接するとともに、
可動電極プレート３の固定端部の先端に被覆リード線９
を溶接してマウント体を構成している。Then, the supports 5a and 5b of one insulating block 5 are inserted through the movable electrode plate 3 and the thermally responsive element plate 7 into the holes 6a and 6b of the other insulating block, and the tips of the supports 5a and 5b protruding from these holes are inserted. The other end of the fixed electrode plate 2, the fixed end of the movable electrode plate 3, and the thermally responsive element plate 7 are fixed by a pair of insulating blocks 5.6 by caulking the parts by ultrasonic welding and deforming them into a dish shape. It is integrated with the end portions in between. Furthermore, a covered lead wire 8 is welded to the tip of the fixed end of the fixed electrode plate 2, and
A covered lead wire 9 is attached to the tip of the fixed end of the movable electrode plate 3.
are welded together to form the mount body.
このようなマウント体は一端に開口を有するＰＢＴ樹脂
からなる長さ１７．２ｍｍ、幅６．２＋ｏ＋＋＋厚さ３
．６ｍ−の小型の容器１０内に収納し、その開口から被
覆リード線８，９を外部に導出し、容器１０の開口をエ
ボキン樹脂からなる充填材１１にて封止している。Such a mount body is made of PBT resin with an opening at one end and has a length of 17.2 mm, a width of 6.2 + o + + + thickness of 3
．． It is housed in a small 6 m-sized container 10, the covered lead wires 8 and 9 are led out from the opening, and the opening of the container 10 is sealed with a filler 11 made of Evokin resin.
かかる構造の小型のサーマルプロテクタにおいては、可
動電極プレート３の背面に沿って熱応動素子板７を設け
るとともに、可動電極プレート２に対し熱応動素子板７
の可動端部かわずかな裕度を持って可動電極プレート３
の爪部３ｄによって係止され、かつ固定端部が一対の絶
縁ブロック５．６で可動電極プレート２とともに挟んで
裕度がない状態で固く位置決めされてかしめ固定される
ために、熱応動素子板７の無用な動きかなく振動や衝撃
が加わっても熱応動素子板７が容器１０内壁面に接触せ
ず、かつ音もしなくなって、熱応動素子板７の反転復帰
動作に支障がないように安定させることができる。In a small thermal protector having such a structure, a thermally responsive element plate 7 is provided along the back surface of the movable electrode plate 3, and a thermally responsive element plate 7 is provided with respect to the movable electrode plate 2.
The movable end of the movable electrode plate 3 has a slight margin.
The thermally responsive element plate is locked by the claw portion 3d, and the fixed end is sandwiched between the pair of insulating blocks 5.6 together with the movable electrode plate 2, and is firmly positioned and caulked with no margin. There is no unnecessary movement of the thermally responsive element plate 7, and even if vibration or impact is applied, the thermally responsive element plate 7 does not come into contact with the inner wall surface of the container 10, and there is no sound, so that the inversion return operation of the thermally responsive element plate 7 is not hindered. It can be stabilized.
一方、モータ等の電気機器の異常時については、熱応動
素子板７が反転し、熱応動素子板７が可動電極プレート
３の爪部３ｄ、ダボ部３ｃの二点に当接することにより
、可動電極プレート３が熱応動素子板７の反転動作に対
応した動きとなりて、固定接点１から可動接点４を開離
させることになる。On the other hand, in the event of an abnormality in electrical equipment such as a motor, the thermally responsive element plate 7 is reversed, and the thermally responsive element plate 7 comes into contact with two points, the claw portion 3d and the dowel portion 3c, of the movable electrode plate 3, so that the thermally responsive element plate 7 is movable. The electrode plate 3 moves in response to the reversal movement of the thermally responsive element plate 7, thereby separating the movable contact 4 from the fixed contact 1.
このサーマルプロテクタは特に部品を新たに付加する必
要がないため、安価で、かつ小型にもかかわらず、従来
のもの□と同等の品質性能のものを得ることができる。Since this thermal protector does not require the addition of any new parts, it is possible to obtain the same quality and performance as the conventional one □ despite being inexpensive and small.
発明の詳細
な説明したように、本発明は小型になっても、熱応動素
子板の取付けが完全にできるために、容器との隙間を極
力小さくできるばかりでなく、電気機器の正常時の通常
の振動や衝撃に対しても熱応動素子板のガタッキもなく
、かつ異常な動作も未然に防止できる品質性能の高い小
型のサーマルプロテクタを安価に提供することができる
ものである。As described in detail, even if the present invention is made smaller, the thermally responsive element plate can be completely attached, so not only can the gap with the container be minimized, but also the normal It is possible to provide at a low cost a small-sized thermal protector with high quality and performance, which does not cause rattling of the thermally responsive element plate even when subjected to vibrations and shocks, and prevents abnormal operation.
第１図（ａｌ、 （ｂｌは本発明の一実施例であ・るサ
ーマルプロテクタの一部切欠側面図および同正面図、第
２図（ａｌ 、 （ｂ）は可動電極体の一例を示す正面
図および側面図、第３図（ａｌ、 （ｂｌは熱応動素子
板の一例を示す正面図および側面図、第４図（ａｌ、
ｆｂｌは固定電極体の一例を示す正面図および側面図、
第５図ｆａｔ、 ｆｂ）は他方の絶縁ブロックの一例を
示す正面図および側面図、第６図１ａｌ、 （ｂｌは従
来のサーマルプロテクタの一部切欠正面図および同側面
図、第７図は可動電極プレートの斜視図である。
１・・・・・・固定接点、２・・・・・・固定電極プレ
ート、３・・・・・・可動電極プレート、３ａ、３ｂ・
・・・・・穴、３ｄ・・・・・・爪部、４・・・・・・
可動接点、５．６・・・・・・絶縁ブロック、５ａ、５
ｂ・・・・・・支柱、６ａ、６ｂ・・・・・・絶縁ブロ
ックの穴、７・・・・・・熱応動素子板、７ａ、７ｂ・
・・・・・熱応動素子板の穴。
代理人の氏名 弁理士 粟野重孝 ほか１名２ 固定電
植プレート ５，６ 絶縁ブロックＪ 町ｖＯＪｔ
＆プｂ −） ５ａ、５ｂ−’ＬｕＪｄ 爪部
り Ｂ応動景子叔Ｃｂ＋
第３図
ＩＱ＞
Ｉｂ）
第
・１
１刈
第
図
（ａ）
（ｂ）
第
図
第
図
ｖ戸
！１
（ｂ）Figure 1 (al, (bl) is a partially cutaway side view and front view of a thermal protector which is an embodiment of the present invention, and Figure 2 (al) and (b) are front views showing an example of a movable electrode body. Figures and side views;
fbl is a front view and a side view showing an example of a fixed electrode body,
Fig. 5 (fat, fb) is a front view and side view showing an example of the other insulating block, Fig. 6 (1al, bl) is a partially cutaway front view and side view of a conventional thermal protector, Fig. 7 is a movable It is a perspective view of an electrode plate. 1... Fixed contact, 2... Fixed electrode plate, 3... Movable electrode plate, 3a, 3b.
...hole, 3d...claw, 4...
Movable contact, 5.6...Insulation block, 5a, 5
b... Support column, 6a, 6b... Hole in insulation block, 7... Thermal response element plate, 7a, 7b.
...hole in the thermally responsive element board. Name of agent Patent attorney Shigetaka Awano and 1 other person 2 Fixed electroplating plate 5, 6 Insulation block J Town vOJt
&pb-) 5a, 5b-'LuJd Claw part
ri B Odo Keiko Cb + Figure 3 IQ > Ib) 1st 1st cut Figure (a) (b) Figure Figure Figure v door! 1 (b)
Claims (1)
固定電極体と、固定端部に複数個の穴を有し、かつ可動
端部に前記固定接点に対し接離する可動接点を先端部に
固着した可動電極プレートを備えたばね性を有する可動
電極体とを対向させ、前記固定電極プレートの他端部を
、前記可動電極体に向かって延びる複数個の支柱を設け
た一方の樹脂製の絶縁ブロックに貫通固着し、前記一方
の絶縁ブロックと前記複数個の支柱が挿通する複数個の
穴を有する他方の樹脂製の絶縁ブロックとの間に、前記
可動電極プレートの固定端部と、前記可動電極プレート
の背面に沿って設けられ、かつこの可動電極プレートの
先端部を前記背面側に折り返して形成された爪部で可動
端部がわずかの裕度を持って係止された熱応動素子板の
複数個の穴を有する固定端部とを設け、かつ前記一方の
絶縁ブロックの支柱を前記可動電極プレートおよび前記
熱応動素子板の各々の穴を通して前記他方の絶縁ブロッ
クの穴にそれぞれ挿通させ、前記穴から突出した前記支
柱の先端部をかしめることにより前記一対の絶縁ブロッ
クで前記固定電極プレートの他端部と、前記可動電極プ
レートの固定端部と、前記熱応動素子板の固定端部とを
挟んで一体化してなるマウント体を容器内に設けたこと
を特徴とするサーマルプロテクタ。A fixed electrode body including a fixed electrode plate having a fixed contact fixed to one end thereof, a fixed electrode body having a plurality of holes at the fixed end, and a movable contact at the tip end having a movable contact that contacts and separates from the fixed contact at the movable end. A movable electrode body having a spring property and having a fixed movable electrode plate are opposed to each other, and the other end of the fixed electrode plate is provided with a plurality of supports extending toward the movable electrode body. The fixed end of the movable electrode plate and the movable A thermally responsive element plate, which is provided along the back surface of the electrode plate, and whose movable end portion is locked with a slight margin by a claw portion formed by folding the tip end of the movable electrode plate toward the back surface side. a fixed end portion having a plurality of holes, and inserting the supports of the one insulating block into the holes of the other insulating block through the respective holes of the movable electrode plate and the thermally responsive element plate, By caulking the tips of the pillars protruding from the holes, the pair of insulating blocks can secure the other end of the fixed electrode plate, the fixed end of the movable electrode plate, and the fixed end of the thermally responsive element plate. A thermal protector is characterized in that a mount body is provided inside a container, and is integrated with a mount body sandwiching the mount body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2203286A JP3052349B2 (en) | 1990-07-31 | 1990-07-31 | Thermal protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2203286A JP3052349B2 (en) | 1990-07-31 | 1990-07-31 | Thermal protector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0495324A true JPH0495324A (en) | 1992-03-27 |
| JP3052349B2 JP3052349B2 (en) | 2000-06-12 |
Family
ID=16471533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2203286A Expired - Fee Related JP3052349B2 (en) | 1990-07-31 | 1990-07-31 | Thermal protector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3052349B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0676786A2 (en) * | 1994-04-05 | 1995-10-11 | Texas Instruments Incorporated | Compact protector |
| JPH1116465A (en) * | 1997-06-25 | 1999-01-22 | Matsushita Electric Ind Co Ltd | Thermal protector |
| WO2024009461A1 (en) * | 2022-07-07 | 2024-01-11 | 株式会社生方製作所 | Thermal protector |
-
1990
- 1990-07-31 JP JP2203286A patent/JP3052349B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0676786A2 (en) * | 1994-04-05 | 1995-10-11 | Texas Instruments Incorporated | Compact protector |
| EP0676786A3 (en) * | 1994-04-05 | 1996-04-24 | Texas Instruments Inc | Compact protector. |
| US5607610A (en) * | 1994-04-05 | 1997-03-04 | Texas Instruments Incorporated | Compact protector |
| JPH1116465A (en) * | 1997-06-25 | 1999-01-22 | Matsushita Electric Ind Co Ltd | Thermal protector |
| WO2024009461A1 (en) * | 2022-07-07 | 2024-01-11 | 株式会社生方製作所 | Thermal protector |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3052349B2 (en) | 2000-06-12 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |