WO2022158243A1 - Circuit breaker - Google Patents

Circuit breaker Download PDF

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Publication number
WO2022158243A1
WO2022158243A1 PCT/JP2021/047929 JP2021047929W WO2022158243A1 WO 2022158243 A1 WO2022158243 A1 WO 2022158243A1 JP 2021047929 W JP2021047929 W JP 2021047929W WO 2022158243 A1 WO2022158243 A1 WO 2022158243A1
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WO
WIPO (PCT)
Prior art keywords
temperature sensor
circuit breaker
sensor unit
groove
main contact
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PCT/JP2021/047929
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French (fr)
Japanese (ja)
Inventor
剛規 吉田
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寺崎電気産業株式会社
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Publication of WO2022158243A1 publication Critical patent/WO2022158243A1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
    • G01K7/22—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B3/00—Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear

Definitions

  • the present invention relates to a structure for mounting a temperature sensor unit to a housing for measuring the main contact temperature of a circuit breaker.
  • Circuit breakers have been used for the purpose of protecting wires from heat rise due to overcurrent, preventing wires from melting due to short-circuit transient current in short-circuit accidents, and preventing equipment burnout. 230927 (Patent Document 1) and Japanese Patent Application Laid-Open No. 2012-150962 (Patent Document 2).
  • Patent Document 3 JP-A-11-351959 (Patent Document 4), JP-A-2000-35365 (Patent Document 5), JP-A-2004-279371 (Patent Document 6), JP-A-2010-81742 JP-A-2012-21939 (Patent Document 8), JP-A-2013-172050 (Patent Document 9) and JP-A-2018-170924 (Patent Document 10).
  • Patent Document 3 JP-A-11-351959
  • Patent Document 5 JP-A-2000-35365
  • Patent Document 6 JP-A-2004-279371
  • Patent Document 8 JP-A-2010-81742 JP-A-2012-21939
  • Patent Document 8 JP-A-2013-172050
  • Patent Document 10 JP-A-2018-170924
  • the present invention has been made in view of the problems described above, and provides a circuit breaker having a temperature sensor unit arrangement configuration capable of effectively measuring the temperature of the breaker main contact provided in the circuit breaker. intended to provide
  • a circuit breaker is a circuit breaker in which a temperature sensor unit for measuring the temperature of a circuit breaker main contact is arranged, wherein the circuit breaker main contact and the temperature sensor unit are accommodated, and the circuit breaker
  • the mold base includes a mold base that houses the temperature sensor unit on the back side when viewed from the main contact, the mold base has a groove that houses the temperature sensor unit, and the temperature sensor unit measures the circuit breaker main contact.
  • a thermistor that heats the temperature, a cable connected to the thermistor, and a case that houses the thermistor and the cable, the case housing the thermistor in the groove when the temperature sensor unit is housed in the groove. It has a housing space for fixing to the bottom side of the groove, which is the side on which the circuit breaker main contacts are located.
  • the temperature sensor unit is temporarily fixed in the groove using an adhesive member and held down by a back mold.
  • circuit breaker having an arrangement configuration of temperature sensor units capable of effectively measuring the temperature of the breaker main contact provided in the circuit breaker.
  • FIG. 3 is a cross-sectional view taken along line III-III in FIG. 2;
  • FIG. 4 is a partially enlarged view of a region surrounded by IV in FIG. 3;
  • FIG. 2 is a perspective view showing the external configuration of the temperature sensor unit of the embodiment;
  • 3 is a perspective view showing the internal configuration of the temperature sensor unit of the embodiment;
  • FIG. 6 is a cross-sectional view taken along line VII-VII in FIG. 5; 6 is a cross-sectional view taken along line VIII-VIII in FIG. 5;
  • FIG. It is the 1st sectional drawing which mounted the temperature sensor unit in the groove.
  • It is the 2nd sectional view which installed the temperature sensor unit in the slot.
  • FIG. 4 is a partially enlarged view corresponding to a region surrounded by IV in FIG. 3;
  • circuit breaker according to this embodiment will be described below with reference to the drawings.
  • the scope of the present invention is not necessarily limited to the number, amount, etc., unless otherwise specified.
  • the same reference numbers are given to the same parts and equivalent parts, and redundant description may not be repeated.
  • the ratios are not shown according to the actual ratio of the dimensions, and the ratios are changed so as to clarify the structure in order to facilitate understanding of the structure.
  • circuit breaker 1 Referring to FIGS. 1 to 4, the rear structure of circuit breaker 1 and mounting of temperature sensor unit 200 according to the present embodiment will be described.
  • 1 is a diagram showing the rear structure of the circuit breaker 1
  • FIG. 2 is a diagram showing the rear internal structure of the circuit breaker 1
  • FIG. 3 is a cross-sectional view taken along line III-III in FIG. 2, and
  • FIG. 4] is a partially enlarged view of the region surrounded by IV in FIG. 3.
  • FIG. 3 is a partially enlarged view of the region surrounded by IV in FIG. 3.
  • the circuit breaker 1 has a mold base 102 in which equipment is housed, and the upper side of this mold base 102 is covered with a back mold 101 .
  • the temperature sensor unit 200 and the groove 110 provided in the mold base 102 for accommodating the temperature sensor unit 200 are exposed.
  • the number of temperature sensor units 200 and the number of grooves 110 are provided corresponding to the number of breaker main contacts 120 provided on the circuit breaker 1 .
  • a groove 110 is provided in the mold base 102 so as to be close to the circuit breaker main contact 120, and the temperature sensor unit 200 is housed inside the groove 110. As shown in FIG.
  • FIG. 5 is a perspective view showing the external configuration of the temperature sensor unit 200
  • FIG. 6 is a perspective view showing the internal configuration of the temperature sensor unit 200
  • FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. 8 is a cross-sectional view taken along line VIII-VIII in FIG.
  • the temperature sensor unit 200 includes a thermistor 221 for measuring the temperature of the circuit breaker main contact 120, a cable 220 to which the thermistor 221 is connected to the tip, and a case accommodating the thermistor 221 and the cable 220. 210 and.
  • the side on which the thermistor 221 of the temperature sensor unit 200 is accommodated is referred to as a tip end side 210a
  • the side on which the cable 220 is accommodated is referred to as a cable side 210b.
  • the tip side 210a of the case 210 is provided with a lower height on the top side than the cable side 210b.
  • a cylindrical housing space 230 for housing the thermistor 221 is provided at a position close to the mold base 102 inside the tip side 210 a of the case 210 .
  • the thermistor 221 can be positioned at the circuit breaker main contact 120 . It can be fixed on the side of the bottom surface 110b of the groove 110, which is the side to do so.
  • the thermistor 221 can be arranged on the side of the circuit breaker main contact 120 where heat is more easily conducted, and the temperature measurement accuracy of the circuit breaker main contact 120 can be improved. It becomes possible.
  • FIG. 9 and 10 are first and second cross-sectional views of the temperature sensor unit 200 mounted in the groove 110.
  • FIG. 9 and 10 are first and second cross-sectional views of the temperature sensor unit 200 mounted in the groove 110.
  • the distance between the pair of sidewalls 110t on both sides along the longitudinal direction of the groove 110 is Therefore, it has a gradually narrowing shape, that is, a tapered shape. Furthermore, a pair of side surfaces 210t on both sides along the longitudinal direction of the case 210 of the temperature sensor unit 200 are also inclined along the side walls 110t.
  • both the temperature sensor unit 200 and the groove 110 are tapered toward the bottom surface side, so that the mounting direction of the temperature sensor unit 200 in the groove 110 can be uniquely determined. .
  • the thermistor 221 provided in the temperature sensor unit 200 can always be arranged on the side of the circuit breaker main contact 120 where heat is easily conducted, and the temperature measurement accuracy of the circuit breaker main contact 120 can be further improved. becomes possible.
  • FIG. 10 schematically illustrates a case where the temperature sensor unit 200 is mounted in the groove 110 with the top surface and the bottom surface reversed. Since the temperature sensor unit 200 cannot be attached to the groove 110 and the back mold 101 cannot be attached to the mold base 102, the temperature sensor unit 200 can be easily removed when the circuit breaker 1 is assembled. Incorrect mounting can be confirmed.
  • FIG. 11 is a partially enlarged view corresponding to the area surrounded by IV in FIG.
  • the temperature sensor unit 200 is preferably fixed to the groove 110 using an adhesive member 300.
  • the adhesive member 300 it is preferable to use a material having high thermal conductivity, and in consideration of the ease of assembly, it is preferable to use a double-sided tape or the like.
  • the thermal conductivity to the thermistor 221 provided in the temperature sensor unit 200 is improved, and the circuit breaker main contact 120 is measured. It is possible to further improve the accuracy of the temperature.
  • fixing the temperature sensor unit 200 to the groove 110 using the adhesive member 300 or the like is temporary fixing, and the temperature sensor unit 200 is pressed against the groove 110 by attaching the back mold 101 to the mold base 102 .
  • circuit breaker of the present disclosure has been described above in the embodiments, the embodiments disclosed this time are illustrative in all respects and are not restrictive.
  • the scope of the present invention is indicated by the scope of claims, and includes all modifications within the meaning and scope of equivalence to the scope of claims.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Power Engineering (AREA)
  • Nonlinear Science (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)
  • Breakers (AREA)

Abstract

This circuit breaker has disposed thereinside a temperature sensor unit (200) that measures the temperature of a breaker main contact. The temperature sensor unit (200) includes: a thermistor (221) that measures the temperature of the breaker main contact; a cable (220) connected to the thermistor (221); and a case (210) that accommodates therein the thermistor (221) and the cable (220). The case (210) has an accommodation space (230) in which, when the temperature sensor unit (200) is accommodated in a groove (110), the thermistor (221) is fixed to the bottom surface side of the groove, which is the side where the breaker main contact is located. This configuration makes it possible to efficiently measure the temperature of the breaker main contact provided in the circuit breaker.

Description

回路遮断器circuit breaker
　本発明は、回路遮断器の主接点温度を測温する温度センサユニットの筐体への搭載構造に関する。 The present invention relates to a structure for mounting a temperature sensor unit to a housing for measuring the main contact temperature of a circuit breaker.
　過電流による熱上昇から電線を保護する目的、短絡事故の短絡過渡電流による電線溶断の防止、機器焼損の防止などを目的とした回路遮断器が従来から用いられており、例えば、特開平４－２３０９２７号公報（特許文献１）及び特開２０１２－１５０９６２号公報（特許文献２）に開示される回路遮断器が挙げられる。 Circuit breakers have been used for the purpose of protecting wires from heat rise due to overcurrent, preventing wires from melting due to short-circuit transient current in short-circuit accidents, and preventing equipment burnout. 230927 (Patent Document 1) and Japanese Patent Application Laid-Open No. 2012-150962 (Patent Document 2).
　このような回路遮断器に、遮断器主接点の測温のために温度センサユニットが搭載されていることは珍しいが、温度センサユニットの搭載に関する技術については、例えば、特開平５－２４０４５４号公報（特許文献３）、特開平１１－３５１９５９号公報（特許文献４）、特開２０００－３５３６５号公報（特許文献５）、特開２００４－２７９３７１号公報（特許文献６）、特開２０１０－８１７４２号公報（特許文献７）、特開２０１２－２１９３９号公報（特許文献８）、特開２０１３－１７２０５０号公報（特許文献９）及び特開２０１８－１７０９２４号公報（特許文献１０）に開示されている。 It is rare for such a circuit breaker to be equipped with a temperature sensor unit for measuring the temperature of the main contact of the circuit breaker. (Patent Document 3), JP-A-11-351959 (Patent Document 4), JP-A-2000-35365 (Patent Document 5), JP-A-2004-279371 (Patent Document 6), JP-A-2010-81742 JP-A-2012-21939 (Patent Document 8), JP-A-2013-172050 (Patent Document 9) and JP-A-2018-170924 (Patent Document 10). there is
特開平４－２３０９２７号公報JP-A-4-230927 特開２０１２－１５０９６２号公報JP 2012-150962 A 特開平５－２４０４５４号公報JP-A-5-240454 特開平１１－３５１９５９号公報JP-A-11-351959 特開２０００－３５３６５号公報JP-A-2000-35365 特開２００４－２７９３７１号公報JP-A-2004-279371 特開２０１０－８１７４２号公報JP-A-2010-81742 特開２０１２－２１９３９号公報JP 2012-21939 A 特開２０１３－１７２０５０号公報JP 2013-172050 A 特開２０１８－１７０９２４号公報JP 2018-170924 A
　近年、回路遮断器の小型化が望まれるようになり、その結果、回路遮断器内の機器の配置を再検討する必要が生じている。従来、遮断器主接点の測温のためには、単に温度センサユニットを遮断器主接点の近傍に配置することで良かった。しかし、この回路遮断器の小型化に伴い、温度センサユニットの配置についても再検討する必要が生じている。 In recent years, there has been a desire to make circuit breakers smaller, and as a result, it has become necessary to reconsider the placement of equipment inside the circuit breaker. Conventionally, in order to measure the temperature of the circuit breaker main contacts, it was sufficient to simply place a temperature sensor unit in the vicinity of the circuit breaker main contacts. However, along with the miniaturization of this circuit breaker, there is a need to reconsider the arrangement of the temperature sensor unit.
　この発明は上記のような問題に鑑みてなされたものであり、回路遮断器に設けられる遮断器主接点の測温を効果的に行なうことができる温度センサユニットの配置構成を備える回路遮断器を提供することを目的とする。 SUMMARY OF THE INVENTION The present invention has been made in view of the problems described above, and provides a circuit breaker having a temperature sensor unit arrangement configuration capable of effectively measuring the temperature of the breaker main contact provided in the circuit breaker. intended to provide
　本開示に基づく遮断器は、内部に遮断器主接点の測温を行なう温度センサユニットが配置された回路遮断器であって、上記遮断器主接点および上記温度センサユニットが収容され、上記遮断器主接点から見て上記温度センサユニットを背面側に収容するモールドベースを含み、上記モールドベースは、上記温度センサユニットを収容する溝を有し、上記温度センサユニットは、上記遮断器主接点の測温を行なうサーミスタと、上記サーミスタに接続されるケーブルと、上記サーミスタおよび上記ケーブルを収容するケースと、を含み、上記ケースは、上記温度センサユニットを上記溝に収容した際に、上記サーミスタを上記遮断器主接点が位置する側である上記溝の底面側に固定する収容空間を有する。 A circuit breaker according to the present disclosure is a circuit breaker in which a temperature sensor unit for measuring the temperature of a circuit breaker main contact is arranged, wherein the circuit breaker main contact and the temperature sensor unit are accommodated, and the circuit breaker The mold base includes a mold base that houses the temperature sensor unit on the back side when viewed from the main contact, the mold base has a groove that houses the temperature sensor unit, and the temperature sensor unit measures the circuit breaker main contact. a thermistor that heats the temperature, a cable connected to the thermistor, and a case that houses the thermistor and the cable, the case housing the thermistor in the groove when the temperature sensor unit is housed in the groove. It has a housing space for fixing to the bottom side of the groove, which is the side on which the circuit breaker main contacts are located.
　他の形態においては、上記溝の一対の側壁の間隔は、上記底面に向かうにしたがって徐々に狭くなり、上記温度センサユニットの上記ケースの一対の側面も、上記側壁に沿うように傾斜している。 In another embodiment, the distance between the pair of sidewalls of the groove gradually narrows toward the bottom surface, and the pair of side surfaces of the case of the temperature sensor unit are also inclined along the sidewalls. .
　他の形態においては、上記温度センサユニットは、上記溝に接着部材を用いて仮固定されていて、バックモールドで抑えられている。 In another form, the temperature sensor unit is temporarily fixed in the groove using an adhesive member and held down by a back mold.
　この開示によれば、回路遮断器に設けられる遮断器主接点の測温を効果的に行なうことができる温度センサユニットの配置構成を備える回路遮断器の提供を可能とする。 According to this disclosure, it is possible to provide a circuit breaker having an arrangement configuration of temperature sensor units capable of effectively measuring the temperature of the breaker main contact provided in the circuit breaker.
実施の形態の回路遮断器の背面構造を示す図である。It is a figure which shows the back surface structure of the circuit breaker of embodiment. 実施の形態の回路遮断器の背面内部構造を示す図である。It is a figure which shows the back internal structure of the circuit breaker of embodiment. 図２中のＩＩＩ－ＩＩＩ線矢視断面図である。FIG. 3 is a cross-sectional view taken along line III-III in FIG. 2; 図３中のＩＶで囲まれた領域の部分拡大図である。FIG. 4 is a partially enlarged view of a region surrounded by IV in FIG. 3; 実施の形態の温度センサユニットの外観構成を示す斜視図である。FIG. 2 is a perspective view showing the external configuration of the temperature sensor unit of the embodiment; 実施の形態の温度センサユニットの内部構成を示す透視図である。3 is a perspective view showing the internal configuration of the temperature sensor unit of the embodiment; FIG. 図５中のＶＩＩ－ＶＩＩ線矢視断面図である。FIG. 6 is a cross-sectional view taken along line VII-VII in FIG. 5; 図５中のＶＩＩＩ－ＶＩＩＩ線矢視断面図である。6 is a cross-sectional view taken along line VIII-VIII in FIG. 5; FIG. 温度センサユニットを溝に装着した第１断面図である。It is the 1st sectional drawing which mounted the temperature sensor unit in the groove. 温度センサユニットを溝に装着した第２断面図である。It is the 2nd sectional view which installed the temperature sensor unit in the slot. 図３中のＩＶで囲まれた領域に対応する部分拡大図である。FIG. 4 is a partially enlarged view corresponding to a region surrounded by IV in FIG. 3;
　以下、図を参照しながら、本実施の形態における回路遮断器について説明する。以下に説明する実施の形態において、個数、量などに言及する場合、特に記載がある場合を除き、本発明の範囲は必ずしもその個数、量などに限定されない。同一の部品、相当部品に対しては、同一の参照番号を付し、重複する説明は繰り返さない場合がある。図面においては、実際の寸法の比率に従って図示しておらず、構造の理解を容易にするために、構造が明確となるように比率を変更して図示している箇所がある。 The circuit breaker according to this embodiment will be described below with reference to the drawings. In the embodiments described below, when referring to the number, amount, etc., the scope of the present invention is not necessarily limited to the number, amount, etc., unless otherwise specified. The same reference numbers are given to the same parts and equivalent parts, and redundant description may not be repeated. In the drawings, there are places where the ratios are not shown according to the actual ratio of the dimensions, and the ratios are changed so as to clarify the structure in order to facilitate understanding of the structure.
　（回路遮断器１）
　図１から図４を参照して、本実施の形態における回路遮断器１の背面構造および温度センサユニット２００の装着について説明する。図１は、回路遮断器１の背面構造を示す図、図２は、回路遮断器１の背面内部構造を示す図、図３は、図２中のＩＩＩ－ＩＩＩ線矢視断面図、図４は、図３中のＩＶで囲まれた領域の部分拡大図である。 (Circuit breaker 1)
Referring to FIGS. 1 to 4, the rear structure of circuit breaker 1 and mounting of temperature sensor unit 200 according to the present embodiment will be described. 1 is a diagram showing the rear structure of the circuit breaker 1, FIG. 2 is a diagram showing the rear internal structure of the circuit breaker 1, FIG. 3 is a cross-sectional view taken along line III-III in FIG. 2, and FIG. 4] is a partially enlarged view of the region surrounded by IV in FIG. 3. [FIG.
　図１を参照して、回路遮断器１は、機器が収容されるモールドベース１０２を有し、このモールドベース１０２の上方側は、バックモールド１０１により覆われている。図２を参照して、モールドベース１０２からバックモールド１０１を取り外すと温度センサユニット２００及び温度センサユニット２００を収容するためにモールドベース１０２に設けられた溝１１０が露出する状態となる。温度センサユニット２００の数量および溝１１０は、回路遮断器１に設けられる遮断器主接点１２０の数量に対応する数が設けられる。 With reference to FIG. 1, the circuit breaker 1 has a mold base 102 in which equipment is housed, and the upper side of this mold base 102 is covered with a back mold 101 . Referring to FIG. 2, when the back mold 101 is removed from the mold base 102, the temperature sensor unit 200 and the groove 110 provided in the mold base 102 for accommodating the temperature sensor unit 200 are exposed. The number of temperature sensor units 200 and the number of grooves 110 are provided corresponding to the number of breaker main contacts 120 provided on the circuit breaker 1 .
　図３および図４を参照して、遮断器主接点１２０に近接するようにモールドベース１０２には、溝１１０が設けられ、この溝１１０の内部に温度センサユニット２００が収容される。 3 and 4, a groove 110 is provided in the mold base 102 so as to be close to the circuit breaker main contact 120, and the temperature sensor unit 200 is housed inside the groove 110. As shown in FIG.
　［温度センサユニット２００］
　図５から図８を参照して、温度センサユニット２００の構成について説明する。図５は、温度センサユニット２００の外観構成を示す斜視図、図６は、温度センサユニット２００の内部構成を示す透視図、図７は、図５中のＶＩＩ－ＶＩＩ線矢視断面図、図８は、図５中のＶＩＩＩ－ＶＩＩＩ線矢視断面図である。 [Temperature sensor unit 200]
The configuration of the temperature sensor unit 200 will be described with reference to FIGS. 5 to 8. FIG. 5 is a perspective view showing the external configuration of the temperature sensor unit 200, FIG. 6 is a perspective view showing the internal configuration of the temperature sensor unit 200, and FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. 8 is a cross-sectional view taken along line VIII-VIII in FIG.
　各図を参照して、この温度センサユニット２００は、遮断器主接点１２０の測温を行なうサーミスタ２２１と、サーミスタ２２１がその先端に接続されるケーブル２２０と、サーミスタ２２１およびケーブル２２０を収容するケース２１０と、を含む。 Referring to each figure, the temperature sensor unit 200 includes a thermistor 221 for measuring the temperature of the circuit breaker main contact 120, a cable 220 to which the thermistor 221 is connected to the tip, and a case accommodating the thermistor 221 and the cable 220. 210 and.
　説明の便宜上、温度センサユニット２００のサーミスタ２２１が収容される側を先端側２１０ａ、ケーブル２２０が収容される側をケーブル側２１０ｂと称する。ケース２１０の先端側２１０ａは、ケーブル側２１０ｂに比べるとその上面側の高さが低く設けられている。ケース２１０の先端側２１０ａの内部においては、モールドベース１０２の近接する位置にサーミスタ２２１を収容するための円筒型の収容空間２３０が設けられている。 For convenience of explanation, the side on which the thermistor 221 of the temperature sensor unit 200 is accommodated is referred to as a tip end side 210a, and the side on which the cable 220 is accommodated is referred to as a cable side 210b. The tip side 210a of the case 210 is provided with a lower height on the top side than the cable side 210b. A cylindrical housing space 230 for housing the thermistor 221 is provided at a position close to the mold base 102 inside the tip side 210 a of the case 210 .
　このように、ケース２１０内に、サーミスタ２２１を収容するための円筒型の収容空間２３０を設けることで、温度センサユニット２００を溝１１０に収容した際に、サーミスタ２２１を遮断器主接点１２０が位置する側である溝１１０の底面１１０ｂ側に固定させることができる。 By providing the cylindrical housing space 230 for housing the thermistor 221 in the case 210 in this way, when the temperature sensor unit 200 is housed in the groove 110 , the thermistor 221 can be positioned at the circuit breaker main contact 120 . It can be fixed on the side of the bottom surface 110b of the groove 110, which is the side to do so.
　これにより、図７および図８に示すように、サーミスタ２２１をより遮断器主接点１２０の熱が伝わり易い側に配置することが可能となり、遮断器主接点１２０の測温の精度を高めることが可能となる。 As a result, as shown in FIGS. 7 and 8, the thermistor 221 can be arranged on the side of the circuit breaker main contact 120 where heat is more easily conducted, and the temperature measurement accuracy of the circuit breaker main contact 120 can be improved. It becomes possible.
　［溝１１０およびケース２１０の形状］
　次に、図９および図１０を参照して、溝１１０およびケース２１０の形状について説明する。図９および図１０は、温度センサユニット２００を溝１１０に装着した第１および第２断面図である。 [Shape of groove 110 and case 210]
Next, the shapes of groove 110 and case 210 will be described with reference to FIGS. 9 and 10. FIG. 9 and 10 are first and second cross-sectional views of the temperature sensor unit 200 mounted in the groove 110. FIG.
　上記図７および図９に示す温度センサユニット２００および溝１１０の断面形状によくあらわれるように、溝１１０の長手方向に沿った両側の一対の側壁１１０ｔの間隔は、溝１１０の底面１１０ｂに向かうにしたがって徐々に狭くなる形態、つまりテーパ形状を有している。さらに、温度センサユニット２００のケース２１０の長手方向に沿った両側の一対の側面２１０ｔも、側壁１１０ｔに沿うように傾斜している。 7 and 9, the distance between the pair of sidewalls 110t on both sides along the longitudinal direction of the groove 110 is Therefore, it has a gradually narrowing shape, that is, a tapered shape. Furthermore, a pair of side surfaces 210t on both sides along the longitudinal direction of the case 210 of the temperature sensor unit 200 are also inclined along the side walls 110t.
　このように、温度センサユニット２００および溝１１０の双方に、底面側に向かうテーパ形状を採用することで、溝１１０への温度センサユニット２００の装着の向きを一義的に決定させることが可能となる。その結果、温度センサユニット２００に設けられたサーミスタ２２１は、常に、遮断器主接点１２０の熱が伝わり易い側に配置することが可能となり、遮断器主接点１２０の測温の精度をより高めることが可能となる。 In this way, both the temperature sensor unit 200 and the groove 110 are tapered toward the bottom surface side, so that the mounting direction of the temperature sensor unit 200 in the groove 110 can be uniquely determined. . As a result, the thermistor 221 provided in the temperature sensor unit 200 can always be arranged on the side of the circuit breaker main contact 120 where heat is easily conducted, and the temperature measurement accuracy of the circuit breaker main contact 120 can be further improved. becomes possible.
　なお、図１０は、温度センサユニット２００を上面と底面とを逆にして溝１１０に装着した場合を模式的に図示したものである。温度センサユニット２００を溝１１０に装着することができず、また、バックモールド１０１をモールドベース１０２に取り付けることができない状態となることから、回路遮断器１の組み立て時に、容易に温度センサユニット２００の誤装着を確認することができる。 Note that FIG. 10 schematically illustrates a case where the temperature sensor unit 200 is mounted in the groove 110 with the top surface and the bottom surface reversed. Since the temperature sensor unit 200 cannot be attached to the groove 110 and the back mold 101 cannot be attached to the mold base 102, the temperature sensor unit 200 can be easily removed when the circuit breaker 1 is assembled. Incorrect mounting can be confirmed.
　［温度センサユニット２００の溝１１０への固定］
　次に、図１１を参照して、温度センサユニット２００の溝１１０への固定について説明する。図１１は、図３中のＩＶで囲まれた領域に対応する部分拡大図である。 [Fixation of Temperature Sensor Unit 200 to Groove 110]
Next, fixing of temperature sensor unit 200 to groove 110 will be described with reference to FIG. 11 . FIG. 11 is a partially enlarged view corresponding to the area surrounded by IV in FIG.
　図１１に示すように、温度センサユニット２００は、溝１１０に接着部材３００を用いて固定されるとよい。接着部材３００としては、熱伝導性に富んだ材料を用いることが好ましく、また、組み立て性を考慮すると、両面テープ等を用いるとよい。 As shown in FIG. 11, the temperature sensor unit 200 is preferably fixed to the groove 110 using an adhesive member 300. As the adhesive member 300, it is preferable to use a material having high thermal conductivity, and in consideration of the ease of assembly, it is preferable to use a double-sided tape or the like.
　このように、温度センサユニット２００を、接着部材３００を用いて溝１１０に固定することで、温度センサユニット２００に設けられたサーミスタ２２１への熱伝導性が向上し、遮断器主接点１２０の測温の精度をより高めることが可能となる。 By fixing the temperature sensor unit 200 to the groove 110 using the adhesive member 300 in this way, the thermal conductivity to the thermistor 221 provided in the temperature sensor unit 200 is improved, and the circuit breaker main contact 120 is measured. It is possible to further improve the accuracy of the temperature.
　なお、温度センサユニット２００は、溝１１０への接着部材３００等を用いた固定は仮固定であり、バックモールド１０１をモールドベース１０２に取り付けることにより、溝１１０に押さえ付けられることとなる。 It should be noted that fixing the temperature sensor unit 200 to the groove 110 using the adhesive member 300 or the like is temporary fixing, and the temperature sensor unit 200 is pressed against the groove 110 by attaching the back mold 101 to the mold base 102 .
　以上、実施の形態において本開示の遮断器について説明したが、今回開示された実施の形態はすべての点で例示であって制限的なものではない。本発明の範囲は請求の範囲によって示され、請求の範囲と均等の意味および範囲内でのすべての変更が含まれる。 Although the circuit breaker of the present disclosure has been described above in the embodiments, the embodiments disclosed this time are illustrative in all respects and are not restrictive. The scope of the present invention is indicated by the scope of claims, and includes all modifications within the meaning and scope of equivalence to the scope of claims.
　１　回路遮断器、１０１　バックモールド、１０２　モールドベース、１１０　溝、１１０ｂ　底面、１１０ｔ　側壁、１２０　主接点、２００　温度センサユニット、２１０　ケース、２１０ａ　先端側、２１０ｂ　ケーブル側、２１０ｔ　側面、２２０　ケーブル、２２１　サーミスタ、２３０　収容空間、３００　接着部材。 1 circuit breaker, 101 back mold, 102 mold base, 110 groove, 110b bottom surface, 110t sidewall, 120 main contact, 200 temperature sensor unit, 210 case, 210a tip side, 210b cable side, 210t side surface, 220 cable, 221 thermistor , 230 housing space, 300 adhesive member.

Claims (3)

  1. 　内部に遮断器主接点の測温を行なう温度センサユニットが配置された回路遮断器であって、
    　前記遮断器主接点および前記温度センサユニットが収容され、前記遮断器主接点から見て前記温度センサユニットを背面側に収容するモールドベースを含み、
    　前記モールドベースは、前記温度センサユニットを収容する溝を有し、
    　前記温度センサユニットは、
    　前記遮断器主接点の測温を行なうサーミスタと、
    　前記サーミスタに接続されるケーブルと、
    　前記サーミスタおよび前記ケーブルを収容するケースと、
    　を含み、
    　前記ケースは、前記温度センサユニットを前記溝に収容した際に、前記サーミスタを前記遮断器主接点が位置する側である前記溝の底面側に固定する収容空間を有する、
    　回路遮断器。     A circuit breaker in which a temperature sensor unit for measuring the temperature of the main contact of the circuit breaker is arranged,
    a mold base that accommodates the circuit breaker main contact and the temperature sensor unit, and that accommodates the temperature sensor unit on the back side when viewed from the circuit breaker main contact;
    The mold base has a groove that accommodates the temperature sensor unit,
    The temperature sensor unit is
    a thermistor that measures the temperature of the circuit breaker main contact;
    a cable connected to the thermistor;
    a case accommodating the thermistor and the cable;
    including
    The case has an accommodation space for fixing the thermistor to the bottom surface side of the groove, which is the side where the circuit breaker main contact is located, when the temperature sensor unit is accommodated in the groove.
    circuit breaker.
  2. 　前記溝の一対の側壁の間隔は、前記底面に向かうにしたがって徐々に狭くなり、
    　前記温度センサユニットの前記ケースの一対の側面も、前記側壁に沿うように傾斜している、請求項１に記載の回路遮断器。     the distance between the pair of sidewalls of the groove gradually narrows toward the bottom surface,
    2. The circuit breaker according to claim 1, wherein a pair of side surfaces of said case of said temperature sensor unit are also inclined along said side walls.
  3. 　前記温度センサユニットは、前記溝に接着部材を用いて仮固定されていて、バックモールドで抑えられている、請求項１または請求項２に記載の回路遮断器。 The circuit breaker according to claim 1 or claim 2, wherein the temperature sensor unit is temporarily fixed in the groove using an adhesive member and held down by back molding.
PCT/JP2021/047929 2021-01-21 2021-12-23 Circuit breaker WO2022158243A1 (en)

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JP2021007876A JP2022112177A (en) 2021-01-21 2021-01-21 circuit breaker

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS628419A (en) * 1985-07-03 1987-01-16 株式会社日立製作所 Circuit breaker with overheating preventor
JP2005315591A (en) * 2004-04-27 2005-11-10 Anritsu Keiki Kk Contact type temperature sensor and contact type temperature sensor unit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS628419A (en) * 1985-07-03 1987-01-16 株式会社日立製作所 Circuit breaker with overheating preventor
JP2005315591A (en) * 2004-04-27 2005-11-10 Anritsu Keiki Kk Contact type temperature sensor and contact type temperature sensor unit

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