JP2011216221A - Temperature sensitive switch for sensing abnormal high temperature - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem wherein, although there are various types of temperature sensors for sensing an abnormal high temperature of various facilities and equipment irreversibly, a temperature sensor, which accurately operates, exhibits high durability and reliability, and is manufactured inexpensively, is difficult to find.SOLUTION: A liquid absorbing layer 4 formed of a liquid absorbent substance is arranged in a periphery of a center of a substrate 1 formed of insulating material so that an upper surface of the liquid absorbing layer is flush with an upper surface of the substrate 1. A pair of band-like electrode plates 6, 6 are oppositely arranged to be in contact with a pair of side edges 5 of the liquid absorbing layer 4. A hollow housing 7 is covered on an upper surface center of the substrate 1 to cover the electrode plates 6, 6. An insulating wax layer 8, which is formed of petroleum-based wax, has an insulation property and is dissolved at an optional set temperature, is formed on the upper surface of the substrate 1 in the hollow housing 7. Furthermore, a conductive wax layer 9, which is formed by kneading a conductive substance in a petroleum-based wax dissolved at a same temperature as the insulating wax layer 8, is superposed on an upper surface of the insulating wax layer 8 to structure the temperature sensitive switch for sensing an abnormal high temperature.

Description

この発明は異常高温感知用感温スイッチ、詳しくは、設置箇所の異常高温に反応して電気回路を不可逆的に閉成するスイッチに関するものである。   The present invention relates to a temperature sensitive switch for detecting abnormally high temperatures, and more particularly to a switch that irreversibly closes an electric circuit in response to an abnormally high temperature at an installation location.

設置箇所の温度に反応して電気回路の開閉を行う感温スイッチは、あらゆる産業分野において広く用いられており、この感温スイッチの用途の一つとして、設置箇所の異常高温の感知警告が挙げられる。   Temperature sensitive switches that open and close electrical circuits in response to the temperature of the installation location are widely used in all industrial fields, and one of the applications of this temperature sensitive switch is to detect abnormally high temperatures at installation locations. It is done.

特開２００９−１５２２１９JP2009-152219A 特開２００７−２８０８７１JP2007-280871

なしNone

異常高温を不可逆的に感知する為に用いる感温スイッチは、予め設定された温度で確実に動作する正確さと共に、一個当たりの単価が安く、しかも耐久性信頼性も高いことが必要であるが、従来の感温スイッチは、構造が複雑で、故障しやすく、信頼性、耐久性に欠け、しかも製造コストも高いものが多く、必ずしも満足すべきものではなかった。   The temperature-sensitive switch used for irreversibly sensing abnormally high temperatures needs to be accurate at a preset temperature, with a low unit price per unit, and with high durability and reliability. However, conventional temperature sensitive switches have a complicated structure, are likely to fail, lack reliability and durability, and have a high manufacturing cost.

本願発明は、異常高温を感知する感温スイッチに関する上記従来の問題点を解決したものであり、発熱現象を正確、確実に感知して不可逆的に表示することが出来る異常高温感知用感温スイッチを提供せんとするものである。   The present invention solves the above-mentioned conventional problems related to a temperature sensitive switch that senses an abnormally high temperature, and can detect an exothermic phenomenon accurately and reliably and display it irreversibly. Is intended to provide.

請求項１に係る発明は、絶縁性素材からなる基板１の中央付近に、液体吸収性物質からなる液体吸収層４を、その上面が基板１の上面と面一（つらいち）となる様に設け、該液体吸収層４の一対の側縁５に接する様に、帯状をなした一対の電極板６，６を対向状態で位置させ、これら電極板６，６を覆う様に、基板１の上面中央に中空ハウジング７を被せ、該中空ハウジング７内の基板１上面に絶縁性を有し、任意の設定温度で溶解する石油系ワックスからなる絶縁性ワックス層８を形成し、更に、この絶縁性ワックス層８の上面に、前記絶縁性ワックス層８と同じ温度で溶解する石油系ワックス中に導電性物質を混練した導電性ワックス層９を重畳せしめて異常高温感知用感温スイッチを構成することにより、上記課題を解決した。   According to the first aspect of the present invention, the liquid absorbing layer 4 made of a liquid absorbing material is disposed near the center of the substrate 1 made of an insulating material so that the upper surface thereof is flush with the upper surface of the substrate 1. A pair of electrode plates 6 and 6 in the form of strips are positioned in an opposed state so as to be in contact with the pair of side edges 5 of the liquid absorption layer 4, and the substrate 1 is covered so as to cover these electrode plates 6 and 6. A hollow housing 7 is placed at the center of the upper surface, and an insulating wax layer 8 made of petroleum wax having an insulating property and melting at an arbitrary set temperature is formed on the upper surface of the substrate 1 in the hollow housing 7. On the upper surface of the conductive wax layer 8, a conductive wax layer 9 obtained by kneading a conductive substance in petroleum wax that melts at the same temperature as the insulating wax layer 8 is superimposed to constitute a temperature sensitive switch for detecting abnormally high temperatures. Thus, the above-mentioned problem has been solved.

又、請求項２に係る発明は、絶縁性素材からなる基板１上に、棒状をなした一対の電極板１４，１４を間隔をあけて直列状に配置し、前記電極板１４，１４間に、舌片状をなし、始端１５側が一方の電極板１４の対向側端部に固定され、開放端１６がもう一方の電極板１４に重なるに足りる長さを有し、下方に向かって付勢された導電性の板バネ１８を設け、該板バネ１８の開放端１６側下面に接点１９を、該接点１９に対応する位置の電極板１４の上面に接点２０をそれぞれ設け、該電極板１４の対向側端部２１に板状をなした液体吸収体２２を延設し、前記一対の接点１９，２０間に、所望の設定温度で溶解する固形状の石油系ワックス２３を介在させて、両接点１９，２０間を強制的に離隔させて異常高温感知用感温スイッチを構成することにより、上記課題を解決した。   In the invention according to claim 2, a pair of rod-like electrode plates 14 and 14 are arranged in series on the substrate 1 made of an insulating material at intervals, and the electrode plates 14 and 14 are arranged between the electrode plates 14 and 14. The tongue 15 has a length sufficient for the start end 15 side to be fixed to the opposite end of the one electrode plate 14 and the open end 16 overlapping the other electrode plate 14 and biased downward. The conductive plate spring 18 is provided, the contact 19 is provided on the lower surface on the open end 16 side of the plate spring 18, and the contact 20 is provided on the upper surface of the electrode plate 14 at a position corresponding to the contact 19, respectively. A liquid absorber 22 having a plate shape is extended to the opposite end portion 21, and a solid petroleum wax 23 that melts at a desired set temperature is interposed between the pair of contacts 19 and 20. A temperature sensitive switch for detecting abnormally high temperatures is formed by forcibly separating the contacts 19 and 20 from each other. By, the above-mentioned problems are eliminated.

更に、請求項３に係る発明は、両端部２５，２６が閉塞され、外面にリード線４１が接続された円筒状をなした導電性素材からなるケーシング２４内に、一方の端部２５寄りに偏位させて、開放端側の端部２８が円盤状のゴム板２９によって封止された石油系ワックス２７を充填すると共に、もう一方の端部２６を貫通させてケーシング２４の軸芯に沿って、絶縁性を有する鞘管３１内に収容された導電性を有する棒状体３２を挿入し、該棒状体３２の先端に接点３４を設け、該接点３４とケーシング２４の端部２６寄りの部分との間に、バネ材３６を張設して前記接点３４をケーシング２４の端部２６方向に後退可能状態で弾性的に支持し、前記接点３４とゴム板２９との間に導電性円柱体３７を滑動自在に位置させ、該導電性円柱体３７のゴム板２９寄りの端面に円板状のシール材３８を接着し、反対側の端面とケーシング２４の端面との間にバネ材３９を張設し、該導電性円柱体３７をゴム板２９側に付勢させて異常高温感知用感温スイッチを構成することにより、上記課題を解決した。   Furthermore, in the invention according to claim 3, in the casing 24 made of a conductive material having a cylindrical shape in which both end portions 25 and 26 are closed and the lead wire 41 is connected to the outer surface, the one end portion 25 is closer to one end. It is displaced and filled with a petroleum wax 27 whose end 28 on the open end side is sealed by a disk-shaped rubber plate 29, and penetrates the other end 26 along the axis of the casing 24. The conductive rod-like body 32 accommodated in the insulating sheath tube 31 is inserted, a contact 34 is provided at the tip of the rod-like body 32, and the contact 34 and the portion near the end portion 26 of the casing 24 are provided. Between the contact point 34 and the rubber plate 29, and a spring member 36 is stretched between the contact point 34 and the rubber plate 29. 37 is slidably positioned, and the conductive cylinder 37 A disc-shaped sealing material 38 is bonded to the end surface near the rubber plate 29, a spring material 39 is stretched between the opposite end surface and the end surface of the casing 24, and the conductive cylinder 37 is attached to the rubber plate 29 side. The above-mentioned problem has been solved by constructing a temperature sensitive switch for detecting abnormally high temperatures.

石油系ワックスの熱による溶解作用あるいは膨張作用を利用しているので、正確に温度に反応し、動作が確実で耐久性にも富み、誤作動のおそれはほとんどない、又、構造が簡単で部品数も少なく、低いコストで製造することが出来る、更に、一旦設定温度を超過したら、その後温度が低下したとしても、回路を閉成し続けるので、警告灯などと組合せることにより、無人施設における異常高温の感知に特に有効である、等のすぐれた効果を有する。   Because it uses the heat-dissolving or expanding action of petroleum-based wax, it responds accurately to temperature, operates reliably and is highly durable, has almost no risk of malfunction, and has a simple structure and parts The number is low and can be manufactured at low cost. Furthermore, once the set temperature is exceeded, the circuit will continue to be closed even if the temperature subsequently drops. It has excellent effects such as being particularly effective for sensing abnormally high temperatures.

この発明に係る異常高温感知用感温スイッチの実施例１の平面図。The top view of Example 1 of the temperature sensor for abnormal high temperature detection concerning this invention. 同じく、図１における矢視Ａ−Ａ線断面図。Similarly, arrow AA sectional view taken on the line in FIG. 同じく、設定温度超過により、電極板６，６間が導通した状態の断面図。Similarly, sectional drawing of the state which electrically connected between the electrode plates 6 and 6 by over preset temperature. 同じく、温度感知すべき対象物へ取り付けた状態の斜視図。Similarly, the perspective view of the state attached to the target object which should be temperature-sensitive. 同じく、電源及び電球と接続した状態の説明図。Similarly, explanatory drawing of the state connected with the power supply and the light bulb. この発明に係る異常高温感知用感温スイッチの実施例２の縦断面図。The longitudinal cross-sectional view of Example 2 of the temperature sensitive switch for abnormally high temperature detection based on this invention. 同じく、設定温度超過により、電極板１４，１４間が導通した状態の断面図。Similarly, sectional drawing of the state which electrically connected between electrode plates 14 and 14 by over preset temperature. この発明に係る異常高温感知用感温スイッチの実施例３の縦断面図。The longitudinal cross-sectional view of Example 3 of the temperature switch for abnormally high temperature detection based on this invention. 同じく、設定温度超過により、回路が閉成された状態の縦断面図。Similarly, the longitudinal cross-sectional view of the state in which the circuit is closed due to the set temperature exceeding. 同じく、設定温度超過後に、再び温度が低下した状態の縦断面図。Similarly, the longitudinal cross-sectional view of a state in which the temperature is lowered again after the set temperature is exceeded.

石油系ワックスの熱による溶解作用又は膨張作用を利用し、設定温度超過の際に、回路を不可逆的に閉成する様にした点に最大の特徴が存する。   The greatest feature lies in that the circuit is irreversibly closed when the set temperature is exceeded by utilizing the dissolving or expanding action of petroleum wax by heat.

図１はこの発明に係る異常高温感知用感温スイッチの実施例１の平面図、図２は図１における矢視Ａ−Ａ線断面図である。図中１は、電気絶縁性素材からなる基板であり、裏面には粘着剤層２が形成されており、異常高温を感知しようとする対象物１１の表面に貼付出来る様になっている。そして、この基板１の中央付近には、矩形状の切欠部が設けられており、この切欠部には、その上面が基板１の上面と面一（つらいち）になる様に、吸い取り紙などの液体吸収物質が充填され、液体吸収層４となっている。   FIG. 1 is a plan view of a first embodiment of a temperature sensitive switch for detecting abnormally high temperatures according to the present invention, and FIG. 2 is a cross-sectional view taken along line AA in FIG. In the figure, reference numeral 1 denotes a substrate made of an electrically insulating material, and a pressure-sensitive adhesive layer 2 is formed on the back surface, so that it can be attached to the surface of an object 11 that is intended to detect abnormally high temperatures. In the vicinity of the center of the substrate 1, a rectangular cutout is provided. The cutout has a blotting paper or the like such that its upper surface is flush with the upper surface of the substrate 1. The liquid absorption layer 4 is filled with the liquid absorption material.

更に、この基板１の上面側には、前記液体吸収層４の一対の側縁５，５に接する様に、帯状をなした一対の電極板６，６が対向状態で位置せしめられており、この基板１の上面中央には、この電極板６，６を覆う様にフィルム状の中空ハウジング７が被せられており、この中空ハウジング７内の基板１の上面には、予め設定された任意の温度で溶解する石油系ワックスからなる絶縁性ワックス層８が形成されており、この絶縁性ワックス層８の上面には、前記絶縁性ワックス層８と同じ温度で溶解する石油系ワックスに、銅、アルミ、ニッケル等の導電性金属の微粒子やカーボン微粒子などの導電性物質を練り込んだ導電性ワックス層９が重畳されている。   Furthermore, on the upper surface side of the substrate 1, a pair of electrode plates 6, 6 having a band shape are positioned in an opposed state so as to be in contact with the pair of side edges 5, 5 of the liquid absorption layer 4. A film-shaped hollow housing 7 is covered at the center of the upper surface of the substrate 1 so as to cover the electrode plates 6 and 6, and an arbitrary preset value is set on the upper surface of the substrate 1 in the hollow housing 7. An insulating wax layer 8 made of a petroleum wax that melts at a temperature is formed. On the upper surface of the insulating wax layer 8, a petroleum wax that dissolves at the same temperature as the insulating wax layer 8, copper, A conductive wax layer 9 in which a conductive material such as fine particles of conductive metal such as aluminum or nickel, or fine particles of carbon is kneaded is superimposed.

なお、前記電極板６からは、外部の電気回路と接続させる為のリード片１０が外側に向かって延設されている。   A lead piece 10 for connecting to an external electric circuit extends outward from the electrode plate 6.

この実施例１は上記の通りの構成を有するものであり、図４に示す様に、異常温度を感知しようとする対象物１１の表面に、粘着剤層２を用いて貼着し、図５に示す様に、リード片１０，１０間に電源１２及び電球１３などの電気的表示素子をそれぞれ接続して使用に供するものであり、対象物１１が予め設定された温度に達すると、中空ハウジング７内の絶縁性ワックス層８が溶解し、液体吸収層４に吸収されると共に、導電性ワックス層９も溶解し、図３に示す様に、電極板６上に直接触れることになる。従って、一対の電極板６，６はこの導電性ワックス層９によって導通し、電球１３に電流が流れて点灯し、それによって対象物１１が予め設定された温度に達したことが表示される。この実施例１においては、電球１３の点灯によって表示することにしたが、必ずしも電球である必要はなく、ブザーなど他の電気的な表示手段を用いても良いことはもちろんである。なお、対象物１１の温度が設定温度を超過した後、設定温度以下に低下したとしても、導電性ワックス層９は電極板６，６を導通し続けるので、回路は閉成されたままである。   This Example 1 has the structure as described above. As shown in FIG. 4, the adhesive layer 2 is attached to the surface of the object 11 to be sensed for abnormal temperature, as shown in FIG. As shown in FIG. 2, an electrical display element such as a power source 12 and a light bulb 13 is connected between the lead pieces 10 and 10 for use, and when the object 11 reaches a preset temperature, the hollow housing 7 is dissolved and absorbed by the liquid absorption layer 4, and the conductive wax layer 9 is also dissolved and directly touches the electrode plate 6 as shown in FIG. Accordingly, the pair of electrode plates 6 and 6 are made conductive by the conductive wax layer 9, and an electric current flows through the light bulb 13 to be lit, thereby displaying that the object 11 has reached a preset temperature. In the first embodiment, the display is performed by turning on the light bulb 13. However, it is not always necessary to use a light bulb, and other electric display means such as a buzzer may be used. Even if the temperature of the object 11 exceeds the set temperature and then drops below the set temperature, the conductive wax layer 9 continues to conduct the electrode plates 6 and 6, so that the circuit remains closed.

従って、この実施例１を電球１３などと組合せて、暗くて視認しにくい無人施設内などに設置した場合、対象物の異常発熱現象を電球１３の点灯によって容易に知ることが可能となる。   Therefore, when the first embodiment is combined with the light bulb 13 or the like and installed in an unmanned facility that is dark and difficult to visually recognize, the abnormal heat generation phenomenon of the object can be easily known by lighting the light bulb 13.

又、石油系ワックスの熱による溶解作用を利用しているので、正確に温度に反応し、動作が確実で耐久性にも富み、誤作動のおそれはほとんどない。更に、構造が簡単で部品数も少なく、低いコストで製造することが出来る。しかも、一旦、設定温度を超過したら、その後温度が低下しても、回路を閉成し続けるので、洞内など暗い無人施設に設置された対象物の異常高温の感知に特に有効である。   Further, since the melting action of petroleum-based wax by heat is used, it reacts accurately with temperature, operates reliably and has high durability, and there is almost no risk of malfunction. Furthermore, the structure is simple, the number of parts is small, and it can be manufactured at a low cost. In addition, once the set temperature is exceeded, the circuit continues to be closed even if the temperature drops thereafter, which is particularly effective for detecting abnormally high temperatures in objects installed in dark unmanned facilities such as in a cave.

図６はこの発明に係る異常高温感知用感温スイッチの実施例２の側面図である。   FIG. 6 is a side view of Embodiment 2 of the temperature sensor for detecting abnormally high temperatures according to the present invention.

図中１は絶縁性素材からなる基板であり、この基板１上には、一対の棒状をなした電極板１４，１４が間隔をあけて直列状に配置されており、これら電極板１４，１４間には、舌片状をなし、始端１５側が一方の電極板１４の対向側端部に、導電性を有するスペーサー４２を介して固定されて支点となっており、開放端１６側がもう一方の電極板１４に重なるに足る十分な余長部１７を有し、下方つまり電極板１４方向に向かって付勢された板バネ１８が設けられている。そして、この板バネ１８の開放端１６側の下面には接点１９が、この接点１９に対応する位置の電極板１４の上面には接点２０がそれぞれ設けられていると共に、この接点２０が設けられている電極板１４の対向側端部２１には吸い取り紙などを素材とした板状をなした液体吸収体２２が延設されている。更に、前記接点１９，２０間には、予め設定された温度で溶解する固形状の石油系ワックス２３が介装されており、両接点１９，２０はこのワックス２３によって離隔されている。   In the figure, reference numeral 1 denotes a substrate made of an insulating material. On the substrate 1, a pair of rod-like electrode plates 14 and 14 are arranged in series at intervals, and these electrode plates 14 and 14 are arranged in series. Between them, a tongue-like shape is formed, and the start end 15 side is fixed to the opposite end of one electrode plate 14 via a conductive spacer 42, and the open end 16 side is the other end. A leaf spring 18 having a sufficient extra length 17 sufficient to overlap the electrode plate 14 and biased downward, that is, toward the electrode plate 14 is provided. A contact 19 is provided on the lower surface of the leaf spring 18 on the open end 16 side, and a contact 20 is provided on the upper surface of the electrode plate 14 at a position corresponding to the contact 19, and the contact 20 is provided. A liquid absorber 22 having a plate shape made of a blotting paper or the like is extended to the opposite end 21 of the electrode plate 14. Further, a solid petroleum-based wax 23 that melts at a preset temperature is interposed between the contacts 19 and 20, and the contacts 19 and 20 are separated by the wax 23.

この実施例２は上記の通りの構成を有するものであり、前述の実施例１と同様、異常高温を感知しようとする対象物１１の表面に固定し、図５に示す実施例１と同様に、電源１２及び電球１３などの電気的表示素子をそれぞれ接続して使用に供するものであり、対象物１１が予め設定された温度に達すると、接点１９，２０間に介装され、これら接点１９，２０を離隔していたワックス２３が溶解し、図７に示す様に、両端点１９，２０が接触し、回路が閉成されて電球１３に電流が流れて点灯し、それによって対象物１１が予め設定された温度に達したことが表示される、設定温度超過により、溶解したワックス２３は、液体吸収体２２に吸い取られるので、一旦、設定温度を超過した後、再び設定温度以下に温度が低下したとしても、接点１９，２０の接触状態は変わらず、回路は閉成したままで、電球１３は点灯し続ける。   This Example 2 has the configuration as described above, and is fixed to the surface of the object 11 that is to sense an abnormally high temperature as in Example 1 described above, and is the same as Example 1 shown in FIG. The electric display elements such as the power source 12 and the light bulb 13 are connected to each other for use. When the object 11 reaches a preset temperature, it is interposed between the contact points 19 and 20, and these contact points 19 are connected. , 20 is melted, and as shown in FIG. 7, both end points 19 and 20 are in contact with each other, the circuit is closed, and a current flows through the light bulb 13 so that it is lit. When the preset temperature exceeds the preset temperature, the dissolved wax 23 is absorbed by the liquid absorber 22, so that once the set temperature is exceeded, the temperature again falls below the preset temperature. Even if the 19, 20 contact state does not change, the circuit will remain closed, the light bulb 13 continues to light up.

従って、この実施例２も、前述の実施例１と同様、電球１３などと組み合わせることにより、暗くて視認しにくい対象物の異常高温を明瞭に表示することが出来る。   Accordingly, in the second embodiment, too, in combination with the light bulb 13 and the like, the abnormal high temperature of the object that is dark and difficult to visually recognize can be clearly displayed.

又、石油系ワックスの熱による溶解作用を利用しているので、正確に温度に反応し、動作が確実で耐久性にも富み、誤作動のおそれはほとんどない。更に、構造が簡単で部品数も少なく、低いコストで製造することが出来る。しかも、一旦、設定温度を超過したら、その後温度が低下したとしても、回路を閉成し続けるので、洞内など暗い無人施設に設置された対象物の異常高温の感知に特に有効である。   Further, since the melting action of petroleum-based wax by heat is used, it reacts accurately with temperature, operates reliably and has high durability, and there is almost no risk of malfunction. Furthermore, the structure is simple, the number of parts is small, and it can be manufactured at a low cost. In addition, once the set temperature is exceeded, the circuit continues to be closed even if the temperature subsequently decreases, which is particularly effective in detecting an abnormally high temperature of an object installed in a dark unmanned facility such as in a cave.

図８はこの発明に係る異常高温感知用感温スイッチの実施例３の縦断面側図である。   FIG. 8 is a longitudinal sectional side view of Embodiment 3 of the temperature sensor for detecting abnormally high temperatures according to the present invention.

図中２４は両端部２５，２６が閉塞され、端部２５付近の外面にリード線４１が接続された導電性素材からなる円筒状をなしたケージングであり、その中には、一方の端部２５寄りに偏位させて、石油系ワックス２７が充填されており、このワックス２７の開放端側の端部２８は、円盤状のゴム板２９によって封止されている。一方、ケージング２４内のもう一方の端部２６側には、合成樹脂３０が充填されており、ケージング２４の軸芯に沿って端部２６の壁面及び合成樹脂３０を貫通して絶縁性を有する鞘管３１がケージング２４内に差し込まれており、この鞘管３１内に、導電性を有する棒状体３２が、その先端がケージング２４内の中空部３３に達する様に挿入されている。そして、この棒状体３２の先端には、接点３４が設けられていると共に、この接点３４と合成樹脂３０の端面３５との間にバネ材３６が張設されており、棒状体３２は端面３５方向へ後退可能状態で弾性的に支持されている。   In the figure, reference numeral 24 denotes a cylindrical casing made of a conductive material in which both end portions 25 and 26 are closed and an outer surface in the vicinity of the end portion 25 is connected to a lead wire 41, and includes one end portion. It is displaced near 25 and is filled with petroleum-based wax 27, and an end portion 28 on the open end side of this wax 27 is sealed with a disk-shaped rubber plate 29. On the other hand, the other end portion 26 side in the casing 24 is filled with a synthetic resin 30 and has an insulating property through the wall surface of the end portion 26 and the synthetic resin 30 along the axial center of the casing 24. A sheath tube 31 is inserted into the casing 24, and a conductive rod-like body 32 is inserted into the sheath tube 31 so that the tip thereof reaches the hollow portion 33 in the casing 24. A contact 34 is provided at the tip of the rod-shaped body 32, and a spring material 36 is stretched between the contact 34 and the end surface 35 of the synthetic resin 30. The rod-shaped body 32 has an end surface 35. It is elastically supported so that it can be retracted in the direction.

更に、ケージング２４の中空部３３の接点３４とゴム板２９との間には、前記接点３４との間に間隔をあけて導電性円柱体３７が滑動自在に位置しており、この導電性円柱体３７の前端部には円盤状のシール材３８が接着せしめられている。又、この導電性円柱体３７の後端部と合成樹脂３０の端面との間にはバネ材３９が張設されており、この導電性円柱体３７をワックス２７が充填されている方向へ付勢している。なお、図中４０はこの導電性円柱体３７の外周を囲繞しているＯリングである。   Further, a conductive cylinder 37 is slidably positioned between the contact 34 of the hollow portion 33 of the casing 24 and the rubber plate 29 with a space between the contact 34 and this conductive cylinder. A disc-shaped sealing material 38 is bonded to the front end portion of the body 37. Further, a spring material 39 is stretched between the rear end portion of the conductive cylinder 37 and the end surface of the synthetic resin 30, and the conductive cylinder 37 is attached in the direction in which the wax 27 is filled. It is fast. In the figure, reference numeral 40 denotes an O-ring surrounding the outer periphery of the conductive cylindrical body 37.

この実施例３は、上記の通りの構成を有するものであり、前述の実施例１及び２と同様、異常温度を感知しようとする対象物１１の表面に固定し、図５に示す実施例１と同様に、電源１２及び電球１３などの表示素子をそれぞれ接続して使用に供するものであり、対象物１１が予め設定された温度に達すると、図９に示す様に、ケージング２４内に充填されているワックス２７が膨張し、導電性円柱体３７が接点３４方向に移動し、これと接触し、回路が閉成されて電球１３に電流が流れて点灯し、これによって対象物１１が予め設定された温度に達したことを表示する。   The third embodiment has the configuration as described above. Like the first and second embodiments, the third embodiment is fixed to the surface of the object 11 to be sensed for abnormal temperature, and the first embodiment shown in FIG. As in FIG. 9, the power source 12 and the display element such as the light bulb 13 are connected to each other for use, and when the object 11 reaches a preset temperature, as shown in FIG. The wax 27 is expanded, the conductive cylinder 37 moves in the direction of the contact 34, contacts with it, the circuit is closed, the current flows through the light bulb 13, and the object 11 is preliminarily turned on. Displays that the set temperature has been reached.

このとき、温度の上昇に伴い、ワックス２７は膨張を続けるが、接点３４はバネ材３６によって、弾性的に保持されつつ、後退自在に支持されているので、導電性円柱体３７の移動に追従して後退し、押圧によって破壊されることを免れている。一方、対象物１１の温度が設定温度以下に低下した時は、図１０に示す様に、ワックス２７は収縮するが、導電性円柱体３７はワックス２７とは連結されていないので、その外周に囲繞しているＯリング４０の摩擦力により、導電性円柱体３７は接点３４と接触している位置のまま残留し、回路は閉成したままで、電球１３は点灯を続ける。   At this time, as the temperature rises, the wax 27 continues to expand, but the contact 34 is elastically held by the spring material 36 and supported so as to be retractable, so that it follows the movement of the conductive cylinder 37. And then retreat and escape from being destroyed by pressing. On the other hand, when the temperature of the object 11 falls below the set temperature, the wax 27 contracts as shown in FIG. 10, but the conductive cylinder 37 is not connected to the wax 27, so Due to the frictional force of the surrounding O-ring 40, the conductive cylinder 37 remains in contact with the contact 34, the circuit remains closed, and the light bulb 13 continues to be lit.

従って、この実施例３も前述の実施例１及び２と同様、電球１３などと組合せることにより、暗く視認しにくい対象物の異常高温を明瞭に表示することが出来る。   Therefore, this Example 3 can also clearly display the abnormally high temperature of the object that is dark and difficult to visually recognize, by combining with the light bulb 13 and the like, as in Examples 1 and 2 described above.

又、石油系ワックスの熱による膨張作用を利用しているので、正確に温度に反応し、動作が確実で耐久性にも富み、誤作動のおそれはほとんどない。更に、構造が簡単で部品数も少なく、低いコストで製造することが出来る。しかも、一旦、設定温度を超過したら、その後温度が低下したとしても、回路を閉成し続けるので、洞内など暗い無人施設に設置された対象物の異常高温の感知に特に有効である。   In addition, since the expansion action of petroleum-based wax due to heat is utilized, it reacts accurately with temperature, the operation is reliable and the durability is high, and there is almost no risk of malfunction. Furthermore, the structure is simple, the number of parts is small, and it can be manufactured at a low cost. In addition, once the set temperature is exceeded, the circuit continues to be closed even if the temperature subsequently decreases, which is particularly effective in detecting an abnormally high temperature of an object installed in a dark unmanned facility such as in a cave.

温度管理を必要とするあらゆる産業分野において利用可能である。   It can be used in all industrial fields that require temperature control.

１．基板
２．粘着剤層
４．液体吸収層
５．側縁
６．電極板
７．中空ハウジング
８．絶縁性ワックス層
９．導電性ワックス層
１０．リード片
１１．対象物
１２．電源
１３．電球
１４．電極板
１５．始端
１６．開放端
１７．余長部
１８．板バネ
１９．接点
２０．接点
２１．対向側端部
２２．液体吸収体
２３．ワックス
２４．ケーシング
２５．端部
２６．端部
２７．ワックス
２８．端部
２９．ゴム板
３０．合成樹脂
３１．鞘管
３２．棒状体
３３．中空部
３４．接点
３５．端面
３６．バネ材
３７．導電性円柱体
３８．シール材
３９．バネ材
４０．Ｏリング
４１．リード線
４２．スペーサー 1. Substrate 2. 3. Adhesive layer 4. Liquid absorption layer Side edge 6. 6. Electrode plate Hollow housing 8. 8. Insulating wax layer Conductive wax layer 10. Lead piece 11. Object 12. Power supply 13. Light bulb 14. Electrode plate 15. Start 16. Open end 17. Extra length part 18. Leaf spring 19. Contact 20. Contact 21. Opposing side end 22. Liquid absorber 23. Wax 24. Casing 25. End 26. End 27. Wax 28. End 29. Rubber plate 30. Synthetic resin 31. Sheath tube 32. Rod-like body 33. Hollow part 34. Contact 35. End face 36. Spring material 37. Conductive cylinder 38. Sealing material 39. Spring material 40. O-ring 41. Lead wire 42. spacer

Claims (3)

絶縁性素材からなる基板（１）の中央付近に、液体吸収性物質からなる液体吸収層（４）を、その上面が基板（１）の上面と面一（つらいち）となる様に設け、該液体吸収層（４）の一対の側縁（５）に接する様に、帯状をなした一対の電極板（６），（６）を対向状態で位置させ、これら電極板（６），（６）を覆う様に、基板（１）の上面中央に中空ハウジング（７）を被せ、該中空ハウジング（７）内の基板（１）上面に、絶縁性を有し、任意の設定温度で溶解する石油系ワックスからなる絶縁性ワックス層（８）を形成し、更に、この絶縁性ワックス層（８）の上面に、前記絶縁性ワックス層（８）と同じ温度で溶解する石油系ワックス中に導電性物質を混練した導電性ワックス層（９）を重畳せしめた異常高温感知用感温スイッチ。   In the vicinity of the center of the substrate (1) made of an insulating material, a liquid absorption layer (4) made of a liquid absorbent material is provided so that its upper surface is flush with the upper surface of the substrate (1), A pair of striped electrode plates (6), (6) are positioned facing each other so as to be in contact with the pair of side edges (5) of the liquid absorption layer (4), and these electrode plates (6), ( 6) Cover the hollow housing (7) on the center of the upper surface of the substrate (1) so as to cover, and the upper surface of the substrate (1) in the hollow housing (7) has an insulating property and melts at an arbitrary set temperature. An insulating wax layer (8) made of petroleum wax is formed, and further on the upper surface of the insulating wax layer (8), the petroleum wax dissolved in the same temperature as the insulating wax layer (8). Temperature-sensitive switch for detecting abnormally high temperature with conductive wax layer (9) mixed with conductive material superimposed 絶縁性素材からなる基板（１）上に、棒状をなした一対の電極板（１４），（１４）を間隔をあけて直列状に配置し、前記電極板（１４），（１４）間に、舌片状をなし、始端（１５）側が一方の電極板（１４）の対向側端部に固定され、開放端（１６）がもう一方の電極板（１４）に重なるに足りる長さを有し、下方に向かって付勢された導電性の板バネ（１８）を設け、該板バネ（１８）の開放端（１６）側下面に接点（１９）を、該接点（１９）に対応する位置の電極板（１４）の上面に接点（２０）をそれぞれ設け、該電極板（１４）の対向側端部（２１）に板状をなした液体吸収体（２２）を延設し、前記一対の接点（１９），（２０）間に、所望の設定温度で溶解する固形状の石油系ワックス（２３）を介在させて、両接点（１９），（２０）間を強制的に離隔させたことを特徴とする異常高温感知用感温スイッチ。   On the substrate (1) made of an insulating material, a pair of electrode plates (14), (14) in the form of rods are arranged in series at intervals, and between the electrode plates (14), (14). It has a tongue-like shape, the start end (15) side is fixed to the opposite end of one electrode plate (14), and the open end (16) is long enough to overlap the other electrode plate (14). Then, a conductive leaf spring (18) urged downward is provided, and the contact (19) corresponds to the lower surface of the open end (16) side of the leaf spring (18), corresponding to the contact (19). A contact (20) is provided on the upper surface of the electrode plate (14) at the position, and a plate-like liquid absorber (22) is extended to the opposite end (21) of the electrode plate (14), A solid petroleum-based wax (23) that melts at a desired set temperature is interposed between the pair of contacts (19) and (20), and both contacts (1 ), (20) abnormally high temperature sensed temperature sensing switch, characterized in that forcibly separated between. 両端部（２５），（２６）が閉塞され、外面にリード線（４１）が接続された円筒状をなした導電性素材からなるケーシング（２４）内に、一方の端部（２５）寄りに偏位させて、開放端側の端部（２８）が円盤状のゴム板（２９）によって封止された石油系ワックス（２７）を充填すると共に、もう一方の端部（２６）を貫通させてケーシング（２４）の軸芯に沿って、絶縁性を有する鞘管（３１）内に収容された導電性を有する棒状体（３２）を挿入し、該棒状体（３２）の先端に接点（３４）を設け、該接点（３４）とケーシング（２４）の端部（２６）寄りの部分との間に、バネ材（３６）を張設して前記接点（３４）をケーシング（２４）の端部（２６）方向に後退可能状態で弾性的に支持し、前記接点（３４）とゴム板（２９）との間に導電性円柱体（３７）を滑動自在に位置させ、該導電性円柱体（３７）のゴム板（２９）寄りの端面に円板状のシール材（３８）を接着し、反対側の端面とケーシング（２４）の端面との間にバネ材（３９）を張設し、該導電性円柱体（３７）をゴム板（２９）側に付勢させたことを特徴とする異常高温感知用感温スイッチ。   Both ends (25) and (26) are closed, and the casing (24) made of a conductive material having a cylindrical shape with a lead wire (41) connected to the outer surface is closer to one end (25). Displaced and filled with petroleum-based wax (27) whose end (28) on the open end side is sealed by a disk-shaped rubber plate (29), and penetrates the other end (26). A conductive rod-shaped body (32) accommodated in an insulating sheath tube (31) is inserted along the axial center of the casing (24), and a contact point ( 34), and a spring material (36) is stretched between the contact (34) and a portion near the end (26) of the casing (24) to connect the contact (34) to the casing (24). Elastically supported in a retractable state in the direction of the end (26), the contact (34) and the rubber plate (29) The conductive cylindrical body (37) is slidably positioned between the two, and a disc-shaped sealing material (38) is bonded to the end face of the conductive cylindrical body (37) near the rubber plate (29). A spring material (39) is stretched between the end face of the casing and the end face of the casing (24), and the conductive cylinder (37) is biased toward the rubber plate (29). Sensing temperature sensitive switch.

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