JPS623535B2 - - Google Patents
Info
- Publication number
- JPS623535B2 JPS623535B2 JP5036578A JP5036578A JPS623535B2 JP S623535 B2 JPS623535 B2 JP S623535B2 JP 5036578 A JP5036578 A JP 5036578A JP 5036578 A JP5036578 A JP 5036578A JP S623535 B2 JPS623535 B2 JP S623535B2
- Authority
- JP
- Japan
- Prior art keywords
- terminal
- movable
- fixed
- movable contact
- bimetal
- 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
Links
- 230000005611 electricity Effects 0.000 claims description 5
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Thermally Actuated Switches (AREA)
Description
【発明の詳細な説明】
本発明は温度の過昇をバイメタルで検出して通
電を遮断するサーモスイツチに関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a thermoswitch that detects an excessive rise in temperature using a bimetal and cuts off current flow.
一般に、温度の異常上昇を検出したバイメタル
の反転動作で通電を遮断するサーモスイツチに
は、バイメタルが自動復帰して通電を再開する自
動復帰型のものと、治具を用いてバイメタルを復
帰させて通電を再開する手動復帰型のものとがあ
る。電気器具にサーモスイツチを組み込んで、例
えばヘアドライヤーやホツトカーラなどのヒータ
の温度過昇防止や、変圧器の巻線の温度過昇防止
として使用する際、電気器具自体の安全性の面か
ら手動復帰型のサーモスイツチの方が優れてい
る。ところが手動復帰型のサーモスイツチでは通
電を再開するためにバイメタルを元の状態に復帰
させる際、治具を用いて操作したり、電気器具を
分解したりするなど非常に厄介な作業が必要であ
り、更に、分解できないような取付場所には使用
できないという問題がある。 In general, thermoswitches that cut off electricity by reversing the bimetal upon detecting an abnormal rise in temperature include automatic return types, in which the bimetal automatically returns and resumes energization, and thermoswitches that use a jig to restore the bimetal. There is also a manual reset type that restarts energization. When incorporating a thermoswitch into an electrical appliance and using it to prevent excessive temperature rises in heaters such as hair dryers and hot curlers, or to prevent excessive temperature rises in the windings of transformers, it is necessary to manually reset the switch for the safety of the electrical appliance itself. Type thermoswitches are better. However, with manual reset type thermoswitches, returning the bimetal to its original state in order to resume energization requires extremely troublesome work such as using a jig or disassembling the electrical appliance. Another problem is that it cannot be used in locations where it cannot be disassembled.
本発明は上記問題点を解消し、サーモスイツチ
が動作して通電を遮断すると、その通電遮断状態
に維持してバイメタルが自動復帰するのを阻止す
るとともに、電気器具に温度過昇防止用としてサ
ーモスイツチを組込んで使用する際、電気器具の
電源を遮断することによりサーモスイツチのバイ
メタルが復帰するサーモスイツチを提供するにあ
る。 The present invention solves the above-mentioned problems, and when the thermoswitch operates and cuts off the electricity, it maintains the electricity cut off state to prevent the bimetal from automatically returning to its original state. To provide a thermoswitch in which the bimetal of the thermoswitch is restored by cutting off the power of an electric appliance when the switch is incorporated and used.
以下本発明を実施例図面に基いて説明する。第
１図乃至第４図において、１はバイメタル、２は
可動接点板、３は可動側端子、４は固定側端子、
５はPTC素子、６は可動接点、７は固定接点
で、前記可動側端子３と固定側端子４とを互いに
その一端を対面させて配設し、前記可動接点板２
の一端を可動側端子３に支持し、前記可動接点板
２の他端の自由端に可動接点６を形成するととも
に、前記固定側端子４の前記可動接点６と対応す
る位置に固定接点７を形成し、前記可動側端子３
及び固定側端子４の片面にバイメタル１を配設す
るとともに他面にPTC素子５を配設し、前記可
動側端子３と固定側端子４とをPTC素子５を介
して連結している。バイメタル１の両端には第３
図に示すように切欠部８，９が形成されている。
PTC素子５の両端には一対の電極１０，１１が
互いに離間して形成されており、該電極１０，１
１の形成されたPTC素子５の側面には、後述の
可動側端子３および固定側端子４の突片１５，１
５および１６，１６と嵌合する切欠１３，１３お
よび１４，１４が形成されている。可動側端子３
には端子１９、可動接点板２の保持片１８、バイ
メタル１の位置規制用突起１７および突片１５，
１５が形成されており、固定側端子４には端子２
０、固定接点７および突片１６が形成されてい
る。PTC素子５の一対の電極１０，１１がそれ
ぞれ可動側端子３および固定側端子４と接続され
るように、前記突片１５，１５および突片１６，
１６が前記切欠１３，１３および切欠１４，１４
にそれぞれ嵌合してさらに突片１５，１５，１
６，１６をいづれも内側に折曲げて第４図に示す
如くPTC素子５は可動側端子３および固定側端
子４にて挾持されている。 The present invention will be explained below based on the drawings of the embodiments. 1 to 4, 1 is a bimetal, 2 is a movable contact plate, 3 is a movable side terminal, 4 is a fixed side terminal,
5 is a PTC element, 6 is a movable contact, and 7 is a fixed contact, the movable side terminal 3 and the fixed side terminal 4 are arranged with one end facing each other, and the movable contact plate 2
One end is supported by the movable terminal 3, a movable contact 6 is formed at the other free end of the movable contact plate 2, and a fixed contact 7 is provided at a position corresponding to the movable contact 6 of the fixed terminal 4. forming the movable side terminal 3
A bimetal 1 is disposed on one side of the fixed side terminal 4, and a PTC element 5 is disposed on the other side, and the movable side terminal 3 and the fixed side terminal 4 are connected via the PTC element 5. There are 3rd wires on both ends of bimetal 1.
As shown in the figure, notches 8 and 9 are formed.
A pair of electrodes 10 and 11 are formed at both ends of the PTC element 5 and are spaced apart from each other.
Projections 15 and 1 of the movable side terminal 3 and the fixed side terminal 4, which will be described later, are attached to the side surface of the PTC element 5 in which the PTC element 1 is formed.
Notches 13, 13 and 14, 14 are formed to fit with the holes 5 and 16, 16. Movable side terminal 3
The terminal 19, the holding piece 18 of the movable contact plate 2, the position regulating protrusion 17 and the protruding piece 15 of the bimetal 1,
15 is formed, and the terminal 2 is formed on the fixed side terminal 4.
0, a fixed contact 7 and a protruding piece 16 are formed. The projecting pieces 15, 15 and the projecting piece 16,
16 is the notch 13, 13 and the notch 14, 14
The projecting pieces 15, 15, 1
6 and 16 are both bent inward, and the PTC element 5 is held between the movable terminal 3 and the fixed terminal 4 as shown in FIG.
この場合、前記両端子３，４とPTC素子５と
の結合作業を更に簡便化する方法を説明する。第
３図において、前記突片１５，１５と突片１６，
１６とが対面するように可動側端子３の端部と固
定側端子４の端部は連結片２１にて連結されてい
る。次に突片１５，１５，１６，１６をPTC素
子５の切欠１３，１３，１４，１４にそれぞれ嵌
合して、一対の電極１０，１１がそれぞれ可動側
端子３と固定側端子４に接続され、第４図に示す
如く、突片１５，１５，１６，１６を円弧状に内
側に折曲げて、しかる後、前記連結片２１を
PTC素子５の中央部でともに打抜いて、PTC素
子５の中央部に開口部１２を形成し、かつ可動側
端子３と固定側端子４とを切り離し、前記両端子
３，４がPTC素子５を介して連結されるのであ
る。このようにして固定側端子４の電極１１に対
応する固定側端子４の表面に固定接点７が位置し
て、PTC素子５を介して、可動側端子３と固定
側端子４とは連結されている。可動側端子３の保
持片１８には可動接点板２の一端が固着されてお
り、該可動接点板２の他端には可動接点６が、前
記固定接点７と接離自在に形成されている。また
該可動接点板２の中間部には可動側端子３の方向
に突出した一対の切起し片２２，２３が形成され
ている。バイメタル１はその切欠部８，９が該切
起し片２２，２３に嵌合され、反転自在に可動接
点板２に保持されている。またバイメタル１の中
央部は可動側端子の突起１７により位置規制され
ている。 In this case, a method for further simplifying the connection work between the terminals 3 and 4 and the PTC element 5 will be explained. In FIG. 3, the protruding pieces 15, 15 and the protruding piece 16,
The end of the movable terminal 3 and the end of the fixed terminal 4 are connected by a connecting piece 21 so that the movable terminal 3 and the fixed terminal 4 face each other. Next, the protrusions 15, 15, 16, 16 are fitted into the notches 13, 13, 14, 14 of the PTC element 5, respectively, and the pair of electrodes 10, 11 are connected to the movable terminal 3 and the fixed terminal 4, respectively. Then, as shown in FIG.
The central part of the PTC element 5 is punched out to form an opening 12 in the central part of the PTC element 5, and the movable terminal 3 and the fixed terminal 4 are separated, so that both the terminals 3 and 4 are connected to the PTC element 5. They are connected via . In this way, the fixed contact 7 is located on the surface of the fixed terminal 4 corresponding to the electrode 11 of the fixed terminal 4, and the movable terminal 3 and the fixed terminal 4 are connected via the PTC element 5. There is. One end of a movable contact plate 2 is fixed to the holding piece 18 of the movable terminal 3, and a movable contact 6 is formed at the other end of the movable contact plate 2 so as to be able to freely come into contact with and separate from the fixed contact 7. . Further, a pair of cut and raised pieces 22 and 23 are formed in the middle portion of the movable contact plate 2 and project in the direction of the movable side terminal 3. The notches 8 and 9 of the bimetal 1 are fitted into the cut-and-raised pieces 22 and 23, and the bimetal 1 is held by the movable contact plate 2 in a freely reversible manner. Further, the position of the central portion of the bimetal 1 is regulated by a protrusion 17 of the movable terminal.
次に本発明サーモスイツチの動作状態を説明す
る。第２図において、サーモスイツチが動作して
いない場合、即ち可動接点６と固定接点７とが接
触している場合、PTC素子５の抵抗値が大きい
為、電流は固定側端子４の端子２０から固定接点
７、可動接点６、可動接点板２を経て可動側端子
３の端子１９へ流れる。次に異常温度をバイメタ
ル１が検出すると、バイメタル１は破線の如く反
転し可動接点板２は上方に反り、可動接点６と固
定接点７とは離接し、可動側端子３と固定側端子
４との間の通電を遮断する。このとき、可動側端
子３と固定側端子４とはPTC素子５を介して接
続されているため、微小電流が固定側端子４から
PTC素子５を経て可動側端子３へ流れ、PTC素
子５は発熱するが、この場合、PTC素子５が有
する特性により発熱温度は一定に維持されるの
で、バイメタル１が元の状態に復帰するのを阻止
され固定側端子４および可動側端子３への通電が
遮断されない限り、サーモスイツチは一度動作す
るとその状態をそのまま維持するのである。 Next, the operating state of the thermoswitch of the present invention will be explained. In Fig. 2, when the thermoswitch is not operating, that is, when the movable contact 6 and the fixed contact 7 are in contact, the current flows from the terminal 20 of the fixed side terminal 4 because the resistance value of the PTC element 5 is large. It flows through the fixed contact 7, the movable contact 6, and the movable contact plate 2 to the terminal 19 of the movable terminal 3. Next, when the bimetal 1 detects an abnormal temperature, the bimetal 1 is reversed as shown by the broken line, the movable contact plate 2 is warped upward, the movable contact 6 and the fixed contact 7 are separated from each other, and the movable terminal 3 and the fixed terminal 4 are Cut off the electricity between. At this time, since the movable side terminal 3 and the fixed side terminal 4 are connected via the PTC element 5, a minute current flows from the fixed side terminal 4.
The flow passes through the PTC element 5 to the movable terminal 3, and the PTC element 5 generates heat, but in this case, the heat generation temperature is maintained constant due to the characteristics of the PTC element 5, so the bimetal 1 does not return to its original state. Once activated, the thermoswitch will maintain that state unless it is blocked and energization to the fixed side terminal 4 and movable side terminal 3 is cut off.
本発明は上記の如く、可動側端子３及び固定側
端子４の片面にバイメタル１と可動接点板２とを
配設するとともに他面にPTC素子５を配設し、
前記可動側端子３と固定側端子４とをPTC素子
５を介して連結しているので、サーモスイツチが
一度動作すると、可動側および固定側両端子への
通電を停止しない限り、動作状態に維持でき、電
気器具にこのサーモスイーチを使用した場合、温
度過昇防止としての安全性が手動復帰型のサーモ
スイツチと同程度に提供でき、しかも復帰させる
手間が手動復帰型のサーモスイツチに比しかんた
んであるという効果を有するものであり、また可
動側及び固定側端子に対して動作を併なうバイメ
タル及び可動接点板と動作を併なわないPTC素
子とは互いに反対側の面に配設しているので、
PTC素子がバイメタル及び可動接点板の動作の
邪魔をすることなく確実に動作し、且つバイメタ
ル及び可動接点板の支持部とPTC素子の連結部
とが可動側及び固定側端子の反対側の面に分離で
きるので、可動側及び固定側端子への取付構造も
簡単に構成できる効果がある。 As described above, the present invention provides the bimetal 1 and the movable contact plate 2 on one side of the movable side terminal 3 and the fixed side terminal 4, and the PTC element 5 on the other side.
Since the movable side terminal 3 and the fixed side terminal 4 are connected via the PTC element 5, once the thermoswitch is activated, it will remain in the operating state unless the energization to both the movable side and fixed side terminals is stopped. When this thermoswitch is used in electrical appliances, it can provide the same level of safety in preventing overtemperature rises as a manual reset type thermoswitch, and the effort to reset is easier than a manual reset type thermoswitch. It has the effect of Because there are
The PTC element operates reliably without interfering with the operation of the bimetal and movable contact plate, and the support part of the bimetal and movable contact plate and the connecting part of the PTC element are on the opposite side of the movable side and fixed side terminals. Since they can be separated, the mounting structure for the movable side and fixed side terminals can be easily constructed.
第１図は本発明サーモスイツチの実施例を示す
平面図、第２図は同上第１図のＡ−Ａ断面図、第
３図は同上の部品組立構成を示す斜視図、第４図
は同上第２図のＢ−Ｂ断面図である。
１……バイメタル、２……可動接点板、３……
可動側端子、４……固定側端子、５……PTC素
子、６……可動接点、７……固定接点。
Fig. 1 is a plan view showing an embodiment of the thermoswitch of the present invention, Fig. 2 is a sectional view taken along the line A-A in Fig. 1 of the above, Fig. 3 is a perspective view showing the assembled configuration of parts of the above, and Fig. 4 is the same as the above. It is a BB sectional view of FIG. 2. 1... Bimetal, 2... Movable contact plate, 3...
Movable side terminal, 4... Fixed side terminal, 5... PTC element, 6... Movable contact, 7... Fixed contact.
Claims (1)
一端を対面させて配設し、可動接点板２の一端を
前記可動側端子３に支持し、前記可動接点板２の
他端の自由端に可動接点６を形成するとともに、
前記固定側端子４の前記可動接点６と対応する位
置に固定接点７を形成し、温度上昇を検出するバ
イメタル１の反転動作により可動接点板２の可動
接点６が固定接点７から離接して可動側端子３と
固定側端子４との間の通電を遮断するサーモスイ
ツチにおいて、前記可動側端子３及び固定側端子
４の片面にバイメタル１と可動接点板２とを配設
するとともに他面にPTC素子５を配設し、前記
可動側端子３と固定側端子４とをPTC素子５を
介して連結してなることを特徴とするサーモスイ
ツチ。 ２ 可動接点板２の一対の切起し片２２，２３に
バイメタル１の両端切欠部８，９を嵌合して、バ
イメタル１を反転自由に保持し、該バイメタル１
の中央部を可動側端子３に形成した突起１７によ
り位置規制してなることを特徴とする特許請求の
範囲第１項記載のサーモスイツチ。 ３ PTC素子５に一対の電極１０，１１を形成
し、該電極１０，１１の形成されたPTC素子５
の側面に切欠１３，１３および１４，１４を形成
し、該切欠１３，１３および１４，１４に、可動
側端子３および固定側端子４に形成した突片１
５，１５および１６，１６と嵌合して該突片１
５，１５，１６，１６を折曲げて前記両端子３，
４をPTC素子５に固着してなることを特徴とす
る特許請求の範囲第１項記載のサーモスイツチ。[Scope of Claims] 1. A movable terminal 3 and a fixed terminal 4 are arranged with their ends facing each other, one end of the movable contact plate 2 is supported by the movable terminal 3, and the movable contact plate 2 is supported by the movable terminal 3. A movable contact 6 is formed at the other free end, and
A fixed contact 7 is formed on the fixed side terminal 4 at a position corresponding to the movable contact 6, and the movable contact 6 of the movable contact plate 2 moves toward and away from the fixed contact 7 by reversing operation of the bimetal 1 that detects a temperature rise. In a thermoswitch that cuts off electricity between a side terminal 3 and a fixed side terminal 4, a bimetal 1 and a movable contact plate 2 are arranged on one side of the movable side terminal 3 and the fixed side terminal 4, and a PTC is arranged on the other side. A thermoswitch characterized in that an element 5 is provided, and the movable side terminal 3 and the fixed side terminal 4 are connected via the PTC element 5. 2 Fit the notches 8 and 9 at both ends of the bimetal 1 into the pair of cut and raised pieces 22 and 23 of the movable contact plate 2, and hold the bimetal 1 freely inverted.
2. The thermoswitch according to claim 1, wherein the central portion of the thermoswitch is positioned by a protrusion 17 formed on the movable terminal 3. 3 A pair of electrodes 10 and 11 are formed on the PTC element 5, and the PTC element 5 on which the electrodes 10 and 11 are formed
Notches 13, 13 and 14, 14 are formed in the side surfaces of the movable terminal 3 and the fixed terminal 4.
5, 15 and 16, 16, and the projecting piece 1
5, 15, 16, 16 are bent to form both terminals 3,
4 is fixed to the PTC element 5, the thermoswitch according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5036578A JPS54140977A (en) | 1978-04-26 | 1978-04-26 | Thermoswitch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5036578A JPS54140977A (en) | 1978-04-26 | 1978-04-26 | Thermoswitch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54140977A JPS54140977A (en) | 1979-11-01 |
| JPS623535B2 true JPS623535B2 (en) | 1987-01-26 |
Family
ID=12856854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5036578A Granted JPS54140977A (en) | 1978-04-26 | 1978-04-26 | Thermoswitch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54140977A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2651002B2 (en) * | 1989-02-17 | 1997-09-10 | 松下冷機株式会社 | Motor overload protection device |
| DE4206157A1 (en) * | 1992-02-28 | 1993-09-16 | Hofsass P | THERMAL SWITCH |
| JP5976336B2 (en) * | 2012-02-20 | 2016-08-23 | 株式会社小松ライト製作所 | breaker |
-
1978
- 1978-04-26 JP JP5036578A patent/JPS54140977A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54140977A (en) | 1979-11-01 |
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