JP7462535B2 - Outlet device - Google Patents

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JP7462535B2
JP7462535B2 JP2020190437A JP2020190437A JP7462535B2 JP 7462535 B2 JP7462535 B2 JP 7462535B2 JP 2020190437 A JP2020190437 A JP 2020190437A JP 2020190437 A JP2020190437 A JP 2020190437A JP 7462535 B2 JP7462535 B2 JP 7462535B2
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temperature
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plug
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receiving spring
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智晴 鈴木
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河村電器産業株式会社
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Description

本発明は、差し込まれたプラグを介して電気機器に電力を供給するコンセント装置に関し、特に接続異常を伴う発熱を検知する機能を備えたコンセント装置に関する。 The present invention relates to an outlet device that supplies power to an electrical device through an inserted plug, and in particular to an outlet device that has a function for detecting heat generation that accompanies a connection abnormality.

発熱による火災の発生を防止するために、発熱を検知する機能を備えたコンセント装置がある。例えば特許文献１では、コンセントに決められた電流値の２倍の電流が流れたら電流を遮断した。
また、特許文献２では、コンセントボックスの２ヶ所の温度を計測し、両者の温度の関係が所定の条件を満たしたら異常発生と判断し電路を遮断した。 In order to prevent fires caused by heat generation, there are outlet devices equipped with a function for detecting heat generation. For example, in Patent Document 1, a current is cut off when a current twice a predetermined current value flows through the outlet.
In addition, in Patent Document 2, the temperatures are measured at two points in an outlet box, and if the relationship between the two temperatures satisfies a predetermined condition, it is determined that an abnormality has occurred and the electrical circuit is cut off.

特開２０１９－１２６７９号公報JP 2019-12679 A 特開２０１９－１９３５４２号公報JP 2019-193542 A

上記特許文献１の技術は、電流値で判断したため、接続不良による発熱を検知できなかった。また、特許文献２の技術は、２ヶ所の温度情報で判断することで、環境温度の影響を小さくできたが、接続不良が発生しても通電電流が小さい場合は発熱量自体が小さいため、検出できなない場合があった。 The technology in Patent Document 1 was unable to detect heat generation due to poor connections because it judged based on current values. In addition, the technology in Patent Document 2 was able to reduce the effects of environmental temperature by judging based on temperature information from two locations, but if a poor connection occurs but the current flow is small, the amount of heat generated is small, so it may not be detected.

そこで、本発明はこのような問題点に鑑み、接続不良が発生したら発熱量が小さくても接続不良発生を検出でき、従来よりきめ細かい監視ができるコンセント装置を提供することを目的としている。 In view of these problems, the present invention aims to provide an outlet device that can detect the occurrence of a connection failure even if the amount of heat generated is small, and that can provide more detailed monitoring than conventional methods.

上記課題を解決する為に、請求項１の発明は、挿入されたプラグを挟持する刃受けバネの近傍の温度を検出する温度検出回路と、プラグと刃受けバネとの間の電位差を検出する電圧検出回路と、異常発生を判断する判定部とを有し、判定部は、電位差から温度を予測するための温度情報を記憶する予測温度情報記憶部を有して、電圧検出回路の電位差情報と予測温度情報記憶部の温度情報とから温度を予測し、予測した温度と温度検出回路から入手した実温度とが、予め設定された基準温度に対して所定の条件を満たしたら、電路異常発生と判断することを特徴とする。
この構成によれば、プラグと刃受けバネとの間の電位差から予測した温度と実温度とから異常発生を判断するため、接続不良と温度異常の双方を検出することが可能であり、従来よりきめ細かい監視ができる。 In order to solve the above problem, the invention of claim 1 has a temperature detection circuit that detects the temperature near the blade receiving spring that clamps an inserted plug, a voltage detection circuit that detects the potential difference between the plug and the blade receiving spring, and a judgment unit that judges the occurrence of an abnormality, wherein the judgment unit has a predicted temperature information memory unit that stores temperature information for predicting the temperature from the potential difference, and predicts the temperature from the potential difference information of the voltage detection circuit and the temperature information of the predicted temperature information memory unit, and if the predicted temperature and the actual temperature obtained from the temperature detection circuit satisfy a predetermined condition against a preset reference temperature, it judges that an abnormality has occurred in the electrical circuit.
With this configuration, the occurrence of an abnormality is determined from the temperature predicted from the potential difference between the plug and the blade receiving spring and the actual temperature, making it possible to detect both poor connections and temperature abnormalities, allowing for more detailed monitoring than before.

請求項２の発明は、挿入されたプラグを挟持する刃受けバネの近傍の温度を検出する温度検出回路と、プラグと刃受けバネとの間の電位差を検出する電圧検出回路と、刃受けバネを備えた電路の電流を検出する電流検出回路と、異常発生を判断する判定部とを有し、判定部は、電力から温度を予測するための温度情報を記憶する予測温度情報記憶部を有して、電圧検出回路の電位差情報及び電流検出回路の電流情報から電力を算出し、この電力情報と予測温度情報記憶部の温度情報とから温度を予測し、予測した温度と温度検出回路から入手した実温度とが、予め設定された基準温度に対して所定の条件を満たしたら、電路異常発生と判断することを特徴とする。
この構成によれば、プラグと刃受けバネとの間で消費される電力から予測した温度と、実温度とから異常発生を判断するため、接続不良と温度異常の双方を検出することが可能であり、従来よりきめ細かい監視ができる。 The invention of claim 2 has a temperature detection circuit that detects the temperature near the blade receiving spring that clamps an inserted plug, a voltage detection circuit that detects the potential difference between the plug and the blade receiving spring, a current detection circuit that detects the current in an electrical circuit that has the blade receiving spring, and a judgment unit that judges the occurrence of an abnormality, wherein the judgment unit has a predicted temperature information memory unit that stores temperature information for predicting temperature from power, calculates power from the potential difference information of the voltage detection circuit and the current information of the current detection circuit, predicts temperature from this power information and the temperature information of the predicted temperature information memory unit, and judges that an abnormality has occurred in the electrical circuit if the predicted temperature and the actual temperature obtained from the temperature detection circuit satisfy a predetermined condition against a preset reference temperature.
With this configuration, the occurrence of an abnormality is determined from the temperature predicted from the power consumed between the plug and the blade receiving spring and the actual temperature, making it possible to detect both poor connections and temperature abnormalities, allowing for more detailed monitoring than before.

請求項３の発明は、請求項１又は２に記載の構成において、判定部は、実温度及び予測した温度の少なくとも一方が基準温度を超えたら、異常発生と判断することを特徴とする。
この構成によれば、実温度が基準温度を超えた場合は危険であるし、予測温度が基準温度を超えた場合は、プラグと刃受けバネとの接触不良が発生したと考えられ、異常の発生を確実に検知できる。 The present invention according to a third aspect is characterized in that in the configuration according to the first or second aspect, the determination unit determines that an abnormality has occurred when at least one of the actual temperature and the predicted temperature exceeds a reference temperature.
With this configuration, if the actual temperature exceeds the reference temperature, it is dangerous, and if the predicted temperature exceeds the reference temperature, it is assumed that poor contact has occurred between the plug and the blade receiving spring, making it possible to reliably detect the occurrence of an abnormality.

請求項４の発明は、請求項１乃至３の何れかに記載の構成において、刃受けバネの奥部に、挿入されたプラグの栓刃の先端が接触する接触子が配置され、電圧検出回路は、接触子と刃受けバネとの間の電圧差を、プラグの栓刃と刃受けバネとの間の電位差として計測することを特徴とする。
この構成によれば、プラグの栓刃と刃受けバネとの間の電位差を簡易な構成で検出できる。 The invention of claim 4 is characterized in that, in the configuration described in any of claims 1 to 3, a contactor that comes into contact with the tip of the plug blade of an inserted plug is arranged at the back of the blade receiving spring, and the voltage detection circuit measures the voltage difference between the contactor and the blade receiving spring as a potential difference between the plug blade of the plug and the blade receiving spring.
According to this configuration, the potential difference between the plug blades and the blade receiving springs can be detected with a simple configuration.

本発明によれば、プラグと刃受けバネとの間の電位差から予測した温度と実温度とから、或いはプラグと刃受けバネとの間の電位差による消費電力から予測した温度と実温度とから異常発生を判断するため、接続不良と温度異常の双方を検出することが可能であり、従来よりきめ細かい監視ができる。 According to the present invention, abnormality is judged from the temperature predicted from the potential difference between the plug and the blade receiving spring and the actual temperature, or from the temperature predicted from the power consumption due to the potential difference between the plug and the blade receiving spring and the actual temperature, so it is possible to detect both poor connections and temperature abnormalities, allowing for more detailed monitoring than ever before.

本発明に係るコンセント装置の第１の形態を示す概略構成図である。1 is a schematic diagram showing a first embodiment of an outlet device according to the present invention; 予測温度情報記憶部が記憶する電位差を温度に変換する表図である。11 is a table showing a conversion of a potential difference to a temperature stored in a predicted temperature information storage unit; 異常と判断する温度変化を示し、（ａ）は実温度が急上昇する場合、（ｂ）は実温度が基準温度を超える場合、（ｃ）は予測温度が基準温度を超える場合、（ｄ）は実温度と予測温度が基準温度を超える場合を示している。These figures show temperature changes that are judged to be abnormal, with (a) showing a sudden rise in actual temperature, (b) showing the actual temperature exceeding the reference temperature, (c) showing the predicted temperature exceeding the reference temperature, and (d) showing the actual temperature and predicted temperature exceeding the reference temperature. コンセント装置の第２の形態を示す概略構成図である。FIG. 11 is a schematic diagram showing a second embodiment of the outlet device; 予測温度情報記憶部が記憶する電力を温度に変換する表図である。11 is a table showing power-to-temperature conversion stored in a predicted temperature information storage unit; FIG.

以下、本発明を具体化した実施の形態を、図面を参照して詳細に説明する。図１は本発明に係るコンセント装置の第１の形態を示す概略図であり、プラグを接続した状態を示している。１がコンセント装置、２がプラグである。
コンセント装置１のハウジング１０内には、挿入されたプラグ２の栓刃２ａを挟持する刃受けバネ１１を商用電源４に接続する電路Ｌに、開閉接点部１３が設けられ、刃受けバネを商用電源４から遮断可能としている。 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings, in which: FIG 1 is a schematic diagram showing a first embodiment of an outlet device according to the present invention, showing a state in which a plug is connected; 1 is an outlet device; 2 is a plug;
Within the housing 10 of the outlet device 1, an opening/closing contact portion 13 is provided in an electrical circuit L that connects a blade receiving spring 11 that clamps the blades 2a of the inserted plug 2 to a commercial power source 4, making it possible to disconnect the blade receiving spring from the commercial power source 4.

また、刃受けバネ１１の奥部には、挿入された栓刃２ａの先端が接触する接触子１２が配置され、この接触子１２と電路Ｌとの間の電位差を、栓刃２ａと刃受けバネ１１との間の電圧差として検出する電圧検出回路１４、刃受けバネ１１近傍の温度を検出する温度検出回路１５を備えている。 In addition, a contact 12 that comes into contact with the tip of the inserted blade 2a is located at the back of the blade receiving spring 11, and a voltage detection circuit 14 detects the potential difference between this contact 12 and the electrical circuit L as a voltage difference between the blade 2a and the blade receiving spring 11, and a temperature detection circuit 15 detects the temperature near the blade receiving spring 11.

そして、栓刃２ａと刃受けバネ１１との間の接触不良等の異常の有無を判定する判定部１６、開閉接点部１３を開動作させる遮断回路１７、異常発生を報知する警報回路１８、等が組み込まれている。
接触子１２は、対を成す２つの刃受けバネ１１，１１の双方に対して設けられ、電圧検出回路１４も同様に双方に対して設けられている。
判定部１６は、電位差から温度を予測するための温度情報を記憶する記憶部（予測温度情報記憶部）１６ａ、ＣＰＵを備えて電圧情報と温度情報とから異常発生を判断する演算部１６ｂを有している。 It also incorporates a judgment unit 16 that judges whether or not there is an abnormality such as poor contact between the blade 2a and the blade receiving spring 11, an interrupter circuit 17 that opens the opening/closing contact unit 13, and an alarm circuit 18 that notifies of the occurrence of an abnormality.
The contacts 12 are provided for both of the pair of blade receiving springs 11, 11, and the voltage detection circuits 14 are similarly provided for both of them.
The determination unit 16 has a memory unit (predicted temperature information memory unit) 16a that stores temperature information for predicting the temperature from the potential difference, and a calculation unit 16b that has a CPU and determines the occurrence of an abnormality from the voltage information and temperature information.

上記の如く構成されたコンセント装置の動作は以下のようである。
判定部１６は、電圧検出回路１４から例えば０．２秒間隔で電圧情報を入手し、温度検出回路１５から例えば１秒間隔で温度情報を入手する。但し、電位差情報は例えば１秒間のデータが平均化され、入手した温度情報と対を成すデータが生成される。
その後、この平均化された電圧情報が記憶部１６ａを参照して温度情報（予測温度）に変換される。こうして入手した予測温度、温度検出回路１５から入手した温度、そして予め設定されている基準温度の３者情報を基に、３者が以下に示す所定の関係を満たしたら演算部１６ｂが異常発生と判断し、所定の制御を実施する。 The operation of the outlet device constructed as above is as follows.
The determination unit 16 obtains voltage information from the voltage detection circuit 14 at intervals of, for example, 0.2 seconds, and obtains temperature information from the temperature detection circuit 15 at intervals of, for example, 1 second. However, for the potential difference information, data for, for example, 1 second is averaged to generate data paired with the obtained temperature information.
Then, the averaged voltage information is converted into temperature information (predicted temperature) by referring to the storage unit 16a. Based on the three pieces of information, that is, the predicted temperature thus obtained, the temperature obtained from the temperature detection circuit 15, and a preset reference temperature, if the three pieces of information satisfy the following predetermined relationship, the calculation unit 16b determines that an abnormality has occurred and performs a predetermined control.

図２は、記憶部１６ａが記憶している電圧情報を温度情報へ変換する表を示し、この表を基に計測した電位差が温度に変換される。例えば、電位差が４５Ｖであったら、３０Ｖ～５０Ｖの範囲にあたるため、６０℃の温度に変換される。この予測温度は、実験により求められた数値により設定されている。 Figure 2 shows a table for converting the voltage information stored in the memory unit 16a into temperature information, and the measured potential difference is converted into a temperature based on this table. For example, if the potential difference is 45 V, this falls within the range of 30 V to 50 V, and is converted into a temperature of 60°C. This predicted temperature is set based on a numerical value determined through an experiment.

図３は、異常と判断する温度変化を示している。図３（ａ）は温度検出回路１５から入手した温度情報（以下、「実温度」とする）が急上昇する場合、図３（ｂ）は実温度が基準温度を超える場合、図３（ｃ）は予測温度が基準温度を超える場合、図３（ｄ）は実温度と予測温度が基準温度を超える場合を示している。図３において、Ｔａは実温度、Ｔｂは予測温度、Ｔｓは基準温度である。閾値となる基準温度Ｔｓは７０℃に設定されている。
図３の（ａ）と（ｂ）は、何れも実温度Ｔａが基準温度Ｔｓを超える場合を示しているが、（ａ）は例えば６０秒の間に６０℃以上上昇する場合を示し、（ｂ）は６０秒の間に２０℃上昇して基準温度Ｔｓを超える状況を示し、何れも電路Ｌを遮断する。
判定部１６は、温度の上昇速度を算出し、基準温度Ｔｓを超える速度が（ａ）に示すように６０秒で４０℃以上であったら、異常発生と判断して電路Ｌを遮断する。
一方、（ｂ）に示すように実温度Ｔａが基準温度Ｔｓを超えても、変化量が２０℃程度であれば、警報音を発報する制御を行うが、遮断しない制御を実施する。 Fig. 3 shows temperature changes that are judged to be abnormal. Fig. 3(a) shows a case where the temperature information obtained from the temperature detection circuit 15 (hereinafter referred to as "actual temperature") rises sharply, Fig. 3(b) shows a case where the actual temperature exceeds a reference temperature, Fig. 3(c) shows a case where the predicted temperature exceeds the reference temperature, and Fig. 3(d) shows a case where the actual temperature and the predicted temperature exceed the reference temperature. In Fig. 3, Ta is the actual temperature, Tb is the predicted temperature, and Ts is the reference temperature. The reference temperature Ts, which is the threshold value, is set to 70°C.
(a) and (b) in Figure 3 both show cases where the actual temperature Ta exceeds the reference temperature Ts, with (a) showing a case where the actual temperature Ta rises by 60°C or more in, for example, 60 seconds, and (b) showing a situation where the actual temperature Ta rises by 20°C in 60 seconds, exceeding the reference temperature Ts, and in both cases the electrical circuit L is interrupted.
The determination unit 16 calculates the rate of temperature rise, and if the rate at which the temperature exceeds the reference temperature Ts is 40° C. or more in 60 seconds as shown in (a), it determines that an abnormality has occurred and cuts off the electric circuit L.
On the other hand, as shown in (b), even if the actual temperature Ta exceeds the reference temperature Ts, if the amount of change is about 20° C., control is performed to issue an alarm sound but not to shut it off.

図３（ｃ）は、実温度Ｔａの上昇は無いが、予測温度Ｔｂが上昇して基準温度Ｔｓを超える場合を示している。この場合、プラグ２とコンセント装置１の間の接続不良が考えられるが、実温度Ｔａの上昇が見られないため、警報を発するのみで遮断しない。
図３（ｄ）は、実温度Ｔａ、予測温度Ｔｂの双方が同時に基準温度Ｔｓを超える変化を示しており、これは接続不良による発熱発生と判断して警報を発すると共に電路Ｌを遮断する。尚、図３の（ｂ）（ｃ）の異常に対して電路Ｌを遮断しても良い。
尚、図２の変換表に示すように、栓刃２ａと刃受けバネ１１との間の電位差が５０Ｖ以上であったら、比較判断をせずに電路Ｌを遮断する。 3C shows a case where the actual temperature Ta does not rise, but the predicted temperature Tb rises and exceeds the reference temperature Ts. In this case, a poor connection between the plug 2 and the outlet device 1 is considered, but since there is no rise in the actual temperature Ta, the device only issues an alarm and does not shut off the power.
3(d) shows a change in which both the actual temperature Ta and the predicted temperature Tb simultaneously exceed the reference temperature Ts, which is determined to be heat generation caused by a poor connection, and an alarm is issued and the electric circuit L is cut off. Note that the electric circuit L may also be cut off for the abnormalities shown in FIG. 3(b) and (c).
As shown in the conversion table of FIG. 2, if the potential difference between the blade 2a and the blade receiving spring 11 is 50 V or more, the electric circuit L is cut off without making a comparison.

このように、プラグ２と刃受けバネ１１との間の電位差から予測した温度と実温度Ｔａとから異常発生を判断するため、接続不良と温度異常の双方を検出することが可能であり、従来よりきめ細かい監視ができる。
また、実温度Ｔａが基準温度Ｔｓを超えた場合は、プラグ２の破損等が考えられるため危険であるし、予測温度Ｔｂが基準温度Ｔｓを超えた場合は、プラグ２と刃受けバネ１１との接触不良が発生したと考えられ、異常の発生を確実に検知できる。
更に、プラグ２の栓刃２ａの電圧を、刃受けバネ１１の奥部に配置した接触子１２で検出するため、プラグ２と刃受けバネ１１との間の電位差を簡易な構成で検出できる。 In this way, since the occurrence of an abnormality is determined from the temperature predicted from the potential difference between the plug 2 and the blade receiving spring 11 and the actual temperature Ta, it is possible to detect both poor connections and temperature abnormalities, allowing for more detailed monitoring than before.
Furthermore, if the actual temperature Ta exceeds the reference temperature Ts, it is dangerous as the plug 2 may be damaged, and if the predicted temperature Tb exceeds the reference temperature Ts, it is considered that poor contact has occurred between the plug 2 and the blade receiving spring 11, and the occurrence of an abnormality can be reliably detected.
Furthermore, since the voltage of the plug blades 2a of the plug 2 is detected by the contacts 12 disposed deep inside the blade receiving spring 11, the potential difference between the plug 2 and the blade receiving spring 11 can be detected with a simple configuration.

図４はコンセント装置１の第２の形態を示す概略図であり、上記図１の構成とは電路Ｌの電流を計測する電流検出回路１９を備えている点が相違している。以下、相違点を説明する。
電流検出回路１９が電路Ｌの電流を計測することで、上記形態のように電位差情報を予測温度Ｔｂに変換するのではなく、電圧情報と電流情報とから電位差により生ずる消費電力を算出し、算出した電力を予測温度Ｔｂに変換して、異常判定の制御を実施する。そのため、記憶部１６ａは電力と温度の関係を記憶している。図５は、この構成における記憶部１６ａが記憶する電力と予測温度の一例を示している。
予測温度に変換後の制御は上記形態と同様であり、図３に示す４つの温度変化が発生したら異常発生と判断する。
尚、図５の変換表に示すように、栓刃２ａと刃受けバネ１１との間の電位差に基づく電力が２５０Ｗ以上であったら、比較判断をせずに電路Ｌを遮断する。 Fig. 4 is a schematic diagram showing a second embodiment of the outlet device 1, which differs from the configuration in Fig. 1 in that it includes a current detection circuit 19 that measures the current in the electric line L. The differences will be described below.
The current detection circuit 19 measures the current in the electric path L, and instead of converting potential difference information into a predicted temperature Tb as in the above embodiment, the power consumption caused by the potential difference is calculated from the voltage information and current information, and the calculated power is converted into a predicted temperature Tb to control the abnormality determination. For this reason, the memory unit 16a stores the relationship between power and temperature. Figure 5 shows an example of the power and predicted temperature stored in the memory unit 16a in this configuration.
The control after conversion to the predicted temperature is the same as that described above, and if any of the four temperature changes shown in FIG. 3 occur, it is determined that an abnormality has occurred.
As shown in the conversion table of FIG. 5, if the power based on the potential difference between the blade 2a and the blade receiving spring 11 is 250 W or more, the electric path L is cut off without making a comparison.

このように、プラグ２と刃受けバネ１１との間の電位差と電路Ｌの電流とから電力を算出し、この電力と、コンセント装置１の実温度Ｔａと、基準温度Ｔｓとから異常発生を判断するため、接続不良と温度異常の双方を検出することができ、従来よりきめ細かい監視ができる。 In this way, the power is calculated from the potential difference between the plug 2 and the prong receiving spring 11 and the current in the electrical circuit L, and the occurrence of an abnormality is determined from this power, the actual temperature Ta of the outlet device 1, and the reference temperature Ts, making it possible to detect both poor connections and temperature abnormalities, allowing for more detailed monitoring than ever before.

尚、上記実施形態では、電圧検出回路１４を２つ備えているが１つでも良い。また、１つのコンセントを備えたコンセント装置１を示しているが、複数のコンセントを備えている場合は、個々に電圧検出回路１４、温度検出回路１５等が設けられる。但し、開閉接点部１３は分岐前の電路に設ければ１つで済むし、警報回路１８を共通とすることができる。 In the above embodiment, two voltage detection circuits 14 are provided, but one may be sufficient. Also, although the outlet device 1 is shown with one outlet, if multiple outlets are provided, each outlet will be provided with a voltage detection circuit 14, temperature detection circuit 15, etc. However, if the opening and closing contact unit 13 is provided in the electrical path before the branch, only one opening and closing contact unit 13 will be sufficient, and the alarm circuit 18 can be shared.

１・・コンセント装置、２・・プラグ、１１・・刃受けバネ、１２・・接触子、１３・・開閉接点部、１４・・電圧検出回路、１５・・温度検出回路、１６・・判定部、１６ａ・・記憶部（予測温度情報記憶部）、１９・・電流検出回路、Ｌ・・電路、Ｔａ・・予測温度。 1: Outlet device, 2: Plug, 11: Prong receiving spring, 12: Contact, 13: Opening and closing contact section, 14: Voltage detection circuit, 15: Temperature detection circuit, 16: Determination section, 16a: Memory section (predicted temperature information memory section), 19: Current detection circuit, L: Electric circuit, Ta: Predicted temperature.

Claims (4)

挿入されたプラグを挟持する刃受けバネの近傍の温度を検出する温度検出回路と、
前記プラグと前記刃受けバネとの間の電位差を検出する電圧検出回路と、
異常発生を判断する判定部と、を有し、
前記判定部は、電位差から温度を予測するための温度情報を記憶する予測温度情報記憶部を有して、前記電圧検出回路の電位差情報と前記予測温度情報記憶部の温度情報とから温度を予測し、予測した温度と前記温度検出回路から入手した実温度とが、予め設定された基準温度に対して所定の条件を満たしたら、電路異常発生と判断することを特徴とするコンセント装置。 a temperature detection circuit for detecting the temperature in the vicinity of the blade receiving spring that holds the inserted plug;
a voltage detection circuit for detecting a potential difference between the plug and the prong receiving spring;
A determination unit that determines whether an abnormality has occurred,
The outlet device is characterized in that the judgment unit has a predicted temperature information memory unit that stores temperature information for predicting temperature from a potential difference, predicts a temperature from the potential difference information of the voltage detection circuit and the temperature information of the predicted temperature information memory unit, and determines that an electrical circuit abnormality has occurred if the predicted temperature and the actual temperature obtained from the temperature detection circuit satisfy a predetermined condition with respect to a preset reference temperature. 挿入されたプラグを挟持する刃受けバネの近傍の温度を検出する温度検出回路と、
前記プラグと前記刃受けバネとの間の電位差を検出する電圧検出回路と、
前記刃受けバネを備えた電路の電流を検出する電流検出回路と、
異常発生を判断する判定部と、を有し、
前記判定部は、電力から温度を予測するための温度情報を記憶する予測温度情報記憶部を有して、前記電圧検出回路の電位差情報及び前記電流検出回路の電流情報から電力を算出し、この電力情報と前記予測温度情報記憶部の温度情報とから温度を予測し、予測した温度と前記温度検出回路から入手した実温度とが、予め設定された基準温度に対して所定の条件を満たしたら、電路異常発生と判断することを特徴とするコンセント装置。 a temperature detection circuit for detecting the temperature in the vicinity of the blade receiving spring that holds the inserted plug;
a voltage detection circuit for detecting a potential difference between the plug and the prong receiving spring;
a current detection circuit for detecting a current in an electric circuit having the blade receiving spring;
A determination unit that determines whether an abnormality has occurred,
The judgment unit has a predicted temperature information memory unit that stores temperature information for predicting temperature from power, calculates power from the potential difference information of the voltage detection circuit and the current information of the current detection circuit, predicts temperature from this power information and the temperature information of the predicted temperature information memory unit, and if the predicted temperature and the actual temperature obtained from the temperature detection circuit satisfy a predetermined condition with respect to a preset reference temperature, determines that an abnormality has occurred in the electrical circuit. 前記判定部は、前記実温度及び前記予測した温度の少なくとも一方が前記基準温度を超えたら、異常発生と判断することを特徴とする請求項１又は２記載のコンセント装置。 The outlet device according to claim 1 or 2, characterized in that the determination unit determines that an abnormality has occurred when at least one of the actual temperature and the predicted temperature exceeds the reference temperature. 前記刃受けバネの奥部に、挿入された前記プラグの栓刃の先端が接触する接触子が配置され、
前記電圧検出回路は、前記接触子と前記刃受けバネとの間の電圧差を、プラグの栓刃と刃受けバネとの間の電位差として計測することを特徴とする請求項１乃至３の何れかに記載のコンセント装置。 A contact is disposed at the back of the blade receiving spring, with which the tip of the plug blade of the inserted plug comes into contact;
4. The outlet device according to claim 1, wherein the voltage detection circuit measures the voltage difference between the contact and the blade receiving spring as a potential difference between the plug blades of the plug and the blade receiving spring.
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JP2008091228A (en) 2006-10-03 2008-04-17 Auto Network Gijutsu Kenkyusho:Kk Connection terminal
JP2009021053A (en) 2007-07-10 2009-01-29 Kawamura Electric Inc Connection failure detecting device of plug-in type terminal part
JP2012115081A (en) 2010-11-26 2012-06-14 Toshiba Elevator Co Ltd Fan abnormality detection device for elevator
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JP2019193542A (en) 2018-04-27 2019-10-31 パナソニックＩｐマネジメント株式会社 Abnormality detection system and abnormality detection method
JP2020057482A (en) 2018-09-28 2020-04-09 パナソニックＩｐマネジメント株式会社 Detection system and electric outlet

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008091228A (en) 2006-10-03 2008-04-17 Auto Network Gijutsu Kenkyusho:Kk Connection terminal
JP2009021053A (en) 2007-07-10 2009-01-29 Kawamura Electric Inc Connection failure detecting device of plug-in type terminal part
JP2012115081A (en) 2010-11-26 2012-06-14 Toshiba Elevator Co Ltd Fan abnormality detection device for elevator
JP2019003872A (en) 2017-06-16 2019-01-10 パナソニックＩｐマネジメント株式会社 Abnormality detection system and wiring accessory
WO2019187301A1 (en) 2018-03-30 2019-10-03 パナソニックＩｐマネジメント株式会社 Overheating countermeasure method for electrical outlet, and electrical outlet
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