JP5652502B2 - power outlet - Google Patents

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JP5652502B2
JP5652502B2 JP2013098618A JP2013098618A JP5652502B2 JP 5652502 B2 JP5652502 B2 JP 5652502B2 JP 2013098618 A JP2013098618 A JP 2013098618A JP 2013098618 A JP2013098618 A JP 2013098618A JP 5652502 B2 JP5652502 B2 JP 5652502B2
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blades
receiving
pair
plug
receiving blade
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JP2014220118A (en
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桂 小俣
桂 小俣
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Mitsubishi Electric Corp
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Description

この発明は、電源コンセントに関するものである。   The present invention relates to a power outlet.

例えば、特許文献１において、電源プラグとの接触力を増加させる電源コンセントが提案されている。   For example, Patent Document 1 proposes a power outlet that increases the contact force with a power plug.

特開平５−２１１０９号公報JP-A-5-21109

しかしながら、特許文献１に記載のものにおいては、電源プラグと電源コンセントの接触力を手動で増加させる必要がある。このため、電源プラグの挿入力が増加する。当該増加により、電源プラグの挿入性が劣化する。   However, in the thing of patent document 1, it is necessary to increase the contact force of a power plug and a power outlet manually. For this reason, the insertion force of the power plug increases. With this increase, the insertion property of the power plug deteriorates.

この発明は、上述の課題を解決するためになされた。すなわち、この発明の目的は、電源プラグの挿入性を劣化させることなく、電源プラグとの接触力を増加させることができる電源コンセントを提供することである。   The present invention has been made to solve the above-described problems. That is, an object of the present invention is to provide a power outlet capable of increasing the contact force with the power plug without deteriorating the insertion property of the power plug.

この発明に係る電源コンセントは、電源プラグの一対の刃と接触した際に電流が流れる第１受け刃と、前記電源プラグの一対の刃の他方と接触した際に電流が流れる第２受け刃と、前記第１受け刃に接続され、前記第２受け刃に接続されず、前記電源プラグの一対の刃の一方が前記第１受け刃に接触して前記電源プラグの一対の刃の他方が前記第２受け刃に接触した際に前記第１受け刃に流れる電流による熱で変形し、前記第１受け刃を前記電源プラグの一対の刃の一方に押し付け、前記第２受け刃を前記プラグの一対の刃の他方に押し付ける感温素子と、を備えたものである。

Power outlet according to the present invention includes a first receiving blades current flows also when in contact with the pair of prongs on the plug, the second receiving blades which current flows when in contact with the other of the pair of blades of the power plug And connected to the first receiving blade, not connected to the second receiving blade, and one of the pair of blades of the power plug contacts the first receiving blade, and the other of the pair of blades of the power plug is The first receiving blade is deformed by the heat generated by the current flowing through the first receiving blade when it contacts the second receiving blade, the first receiving blade is pressed against one of the pair of blades of the power plug, and the second receiving blade is moved to the plug. And a temperature sensitive element pressed against the other of the pair of blades .

この発明によれば、電源プラグの挿入性を劣化させることなく、電源プラグとの接触力を増加させることができる。   According to the present invention, the contact force with the power plug can be increased without deteriorating the insertion property of the power plug.

この発明の実施の形態１における電源コンセントの横断面図である。It is a cross-sectional view of the power outlet in Embodiment 1 of this invention. この発明の実施の形態１における電源コンセントの横断面図である。It is a cross-sectional view of the power outlet in Embodiment 1 of this invention. この発明の実施の形態２における電源コンセントの横断面図である。It is a cross-sectional view of the power outlet in Embodiment 2 of this invention. この発明の実施の形態２における電源コンセントの横断面図である。It is a cross-sectional view of the power outlet in Embodiment 2 of this invention.

この発明を実施するための形態について添付の図面に従って説明する。各図中、同一又は相当する部分には同一の符号が付される。当該部分の重複説明は適宜に簡略化ないし省略される。   A mode for carrying out the invention will be described with reference to the accompanying drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals. The overlapping explanation of the part is appropriately simplified or omitted.

実施の形態１．
図１はこの発明の実施の形態１における電源コンセントの横断面図である。 Embodiment 1 FIG.
FIG. 1 is a cross-sectional view of a power outlet according to Embodiment 1 of the present invention.

図１において、電源プラグ１の先端には、一対のプラグ刃２ａ、２ｂが設けられる。一対のプラグ刃２ａ、２ｂは、導電性を有する。一対のプラグ刃２ａ、２ｂは、図示しない電源コードを介して電気製品に接続される。   In FIG. 1, a pair of plug blades 2 a and 2 b are provided at the tip of the power plug 1. The pair of plug blades 2a and 2b have conductivity. The pair of plug blades 2a, 2b is connected to an electrical product via a power cord (not shown).

電源コンセント３は、外郭４を有する。外郭４は、絶縁性を有する。外郭４の前部には、一対の穴４ａ、４ｂが形成される。外郭４の内部には、一対の受け刃５ａ、５ｂが設けられる。受け刃５ａは、穴４ａの後方に設けられる。受け刃５ｂは、穴４ｂの後方に設けられる。   The power outlet 3 has an outer shell 4. The outer shell 4 has an insulating property. A pair of holes 4 a and 4 b are formed in the front portion of the outer shell 4. Inside the outer shell 4, a pair of receiving blades 5a and 5b are provided. The receiving blade 5a is provided behind the hole 4a. The receiving blade 5b is provided behind the hole 4b.

受け刃５ａは、固定片６ａと可動片７ａとを備える。固定片６ａは、外郭４の側壁の一方に沿って設けられる。固定片６ａは、導電性を有する。可動片７ａは、外郭４の中央側に設けられる。可動片７ａは、固定片６ａに対向する。可動片７ａは、導電性及び弾性を有する。可動片７ａは、先端側に行くにつれて外郭４の中央側に広がるように形成される。可動片７ａにおいて、先端の外郭４中央側には、絶縁板８ａが設けられる。絶縁板８ａは、絶縁性を有する。   The receiving blade 5a includes a fixed piece 6a and a movable piece 7a. The fixing piece 6 a is provided along one of the side walls of the outer shell 4. The fixed piece 6a has conductivity. The movable piece 7 a is provided on the center side of the outer shell 4. The movable piece 7a faces the fixed piece 6a. The movable piece 7a has conductivity and elasticity. The movable piece 7a is formed so as to spread toward the center side of the outer shell 4 as it goes to the distal end side. In the movable piece 7a, an insulating plate 8a is provided on the center side of the outer shell 4 at the tip. The insulating plate 8a has an insulating property.

受け刃５ｂは、固定片６ｂと可動片７ｂとを備える。固定片６ｂは、外郭４の側壁の他方に沿って設けられる。固定片６ｂは、導電性を有する。可動片７ｂは、外郭４の中央側に設けられる。可動片７ｂは、固定片６ｂに対向する。可動片７ｂは、導電性及び弾性を有する。可動片７ｂは、先端側に行くにつれて外郭４の中央側に広がるように形成される。可動片７ｂにおいて、先端の外郭４中央側には、絶縁板８ｂが設けられる。絶縁板８ｂは、絶縁性を有する。   The receiving blade 5b includes a fixed piece 6b and a movable piece 7b. The fixing piece 6 b is provided along the other side wall of the outer shell 4. The fixed piece 6b has conductivity. The movable piece 7 b is provided on the center side of the outer shell 4. The movable piece 7b faces the fixed piece 6b. The movable piece 7b has conductivity and elasticity. The movable piece 7b is formed so as to spread toward the center side of the outer shell 4 as it goes to the distal end side. In the movable piece 7b, an insulating plate 8b is provided on the center side of the outer shell 4 at the tip. The insulating plate 8b has an insulating property.

絶縁板８ａと絶縁板８ｂとの間には、感温素子９が設けられる。例えば、感温素子９は、形状記憶合金、バイメタル等からなる。感温素子９は、コイル状に形成される。   A temperature sensitive element 9 is provided between the insulating plate 8a and the insulating plate 8b. For example, the temperature sensitive element 9 is made of a shape memory alloy, a bimetal, or the like. The temperature sensing element 9 is formed in a coil shape.

受け刃５ａの後端には、電線１０の一端が接続される。電線１０の他端は、感温素子９の端子の一方に接続される。感温素子９の端子の他方には、電源線１１ａの先端が接続される。受け刃５ｂの後端には、電源線１１ｂの先端が接続される。   One end of the electric wire 10 is connected to the rear end of the receiving blade 5a. The other end of the electric wire 10 is connected to one of the terminals of the temperature sensing element 9. The other end of the temperature sensing element 9 is connected to the tip of the power supply line 11a. The distal end of the power supply line 11b is connected to the rear end of the receiving blade 5b.

図１においては、室内の温度は常温である。この場合、感温素子９は、圧縮された形状となる。このため、感温素子９と可動片７ａ、７ｂとの間には、隙間が形成される。その結果、可動片７ａ、７ｂは、固定片６ａ、６ｂとの間に隙間を形成する。この状態で、プラグ刃２ａが固定片６ａと可動片７ａとの間の隙間に挿入される。プラグ刃２ｂが固定片６ｂと可動片７ｂとの間の隙間に挿入される。この際、受け刃５ａとプラグ刃２ａとの接触力は比較的小さい。受け刃５ｂとプラグ刃２ｂとの接触力は比較的小さい。   In FIG. 1, the room temperature is room temperature. In this case, the temperature sensing element 9 has a compressed shape. For this reason, a gap is formed between the temperature sensing element 9 and the movable pieces 7a and 7b. As a result, the movable pieces 7a and 7b form a gap between the fixed pieces 6a and 6b. In this state, the plug blade 2a is inserted into the gap between the fixed piece 6a and the movable piece 7a. The plug blade 2b is inserted into the gap between the fixed piece 6b and the movable piece 7b. At this time, the contact force between the receiving blade 5a and the plug blade 2a is relatively small. The contact force between the receiving blade 5b and the plug blade 2b is relatively small.

次に、図２を用いて、電源コンセント３と電源プラグ１との接続を説明する。
図２はこの発明の実施の形態１における電源コンセントの横断面図である。 Next, the connection between the power outlet 3 and the power plug 1 will be described with reference to FIG.
FIG. 2 is a cross-sectional view of a power outlet according to Embodiment 1 of the present invention.

プラグ刃２ａ、２ｂが固定片６ａ、６ｂと可動片７ａ、７ｂとの間に挿入された状態で電気製品の使用が開始されると、電源コンセント３と電源プラグ１との間において、電流が流れる。この際、感温素子９にも電流が流れる。当該電流により、感温素子９の温度は、内部抵抗による自己発熱で上昇する。感温素子９の温度が４０℃を超えると、感温素子９が可動片７ａ、７ｂに向けて伸びる。その結果、可動片７ａ、７ｂは、固定片６ｂに向けて加圧される。当該加圧により、受け刃５ａ、５ｂは、プラグ刃２ａ、２ｂとの接触力を増加させる。その結果、電源コンセント３と電源プラグ１との接触状態が安定する。   When the use of the electrical product is started in a state where the plug blades 2a and 2b are inserted between the fixed pieces 6a and 6b and the movable pieces 7a and 7b, an electric current is generated between the power outlet 3 and the power plug 1. Flowing. At this time, a current also flows through the temperature sensing element 9. Due to the current, the temperature of the temperature sensing element 9 rises due to self-heating by the internal resistance. When the temperature of the temperature sensing element 9 exceeds 40 ° C., the temperature sensing element 9 extends toward the movable pieces 7a and 7b. As a result, the movable pieces 7a and 7b are pressurized toward the fixed piece 6b. By the pressurization, the receiving blades 5a and 5b increase the contact force with the plug blades 2a and 2b. As a result, the contact state between the power outlet 3 and the power plug 1 is stabilized.

以上で説明した実施の形態１によれば、電気製品が使用される前において、受け刃５ａ、５ｂとプラグ刃２ａ、２ｂとの接触力は比較的小さい。電気製品の使用が開始されると、受け刃５ａ、５ｂは、プラグ刃２ａ、２ｂとの接触力を増加させる。このため、構成要素の少ない簡略化された構成において、電源プラグ１の挿入性を劣化させることなく、電源プラグ１との接触力を増加させることができる。また、電気製品の使用時においては、電源コンセント３から電源プラグ１を抜くことが困難となる。このため、使用中の電気製品が異常停止することを防止できる。   According to the first embodiment described above, the contact force between the receiving blades 5a and 5b and the plug blades 2a and 2b is relatively small before the electric product is used. When the use of the electric product is started, the receiving blades 5a and 5b increase the contact force with the plug blades 2a and 2b. For this reason, in the simplified structure with few components, the contact force with the power plug 1 can be increased without degrading the insertability of the power plug 1. Further, when the electric product is used, it is difficult to remove the power plug 1 from the power outlet 3. For this reason, it can prevent that the electric appliance in use stops abnormally.

また、形状記憶合金の内部抵抗による自己発熱は、ジュール熱である。この際、発熱量は、通電量の２乗に比例する。このため、感温素子９の変形量を通電量と比例させておくとよい。この場合、受け刃５ａ、５ｂに流れる電流の値が大きいほど、受け刃５ａ、５ｂとプラグ刃２ａ、２ｂとの接触力を増加させることができる。例えば、受け刃５ａ、５ｂとプラグ刃２ａ、２ｂとが接触不良の際、感温素子９には、比較的大きな電流が流れる。この場合、感温素子９は、大きく変形する。このため、電源コンセント３と電源プラグ１との接触状態をより安定した状態にすることができる。   The self-heating due to the internal resistance of the shape memory alloy is Joule heat. At this time, the heat generation amount is proportional to the square of the energization amount. For this reason, it is good to make the deformation amount of the temperature sensing element 9 proportional to the energization amount. In this case, the larger the value of the current flowing through the receiving blades 5a, 5b, the greater the contact force between the receiving blades 5a, 5b and the plug blades 2a, 2b. For example, when the receiving blades 5a, 5b and the plug blades 2a, 2b are in poor contact, a relatively large current flows through the temperature sensitive element 9. In this case, the temperature sensitive element 9 is greatly deformed. For this reason, the contact state of the power outlet 3 and the power plug 1 can be made more stable.

電気製品の使用を停止すると、電源コンセント３への通電も止まる。このため、感温素子９の自己発熱も止まる。その結果、感温素子９は冷却される。感温素子９が４０℃以下となると、感温素子９の形状は、初期状態に戻る。この際、受け刃５ａ、５ｂは、プラグ刃２ａ、２ｂとの接触力を減少させる。その結果、電源コンセント３から電源プラグ１を抜くことが容易となる。このため、電源プラグ１の操作性を損なうことがない。   When the use of the electrical product is stopped, energization to the power outlet 3 is also stopped. For this reason, the self-heating of the temperature sensing element 9 also stops. As a result, the temperature sensitive element 9 is cooled. When the temperature sensing element 9 becomes 40 ° C. or lower, the shape of the temperature sensing element 9 returns to the initial state. At this time, the receiving blades 5a and 5b reduce the contact force with the plug blades 2a and 2b. As a result, it becomes easy to remove the power plug 1 from the power outlet 3. For this reason, the operability of the power plug 1 is not impaired.

また、感温素子９は受け刃５ａ、５ｂと別に設けられる。このため、受け刃５ａ、５ｂを特殊な材料で形成する必要がない。   The temperature sensitive element 9 is provided separately from the receiving blades 5a and 5b. For this reason, it is not necessary to form the receiving blades 5a and 5b with a special material.

実施の形態２．
図３はこの発明の実施の形態２における電源コンセントの横断面図である。なお、実施の形態１と同一又は相当部分には同一符号を付して説明を省略する。 Embodiment 2. FIG.
FIG. 3 is a cross-sectional view of a power outlet according to Embodiment 2 of the present invention. In addition, the same code | symbol is attached | subjected to the part which is the same as that of Embodiment 1, or an equivalent, and description is abbreviate | omitted.

実施の形態１においては、感温素子９は受け刃５ａ、５ｂと別に設けられていた。一方、実施の形態２においては、受け刃１２ａ、１２ｂ自体が感温素子で形成される。受け刃１２ａは、開口部を有する。開口部は、穴４ａの後方に設けられる。受け刃１２ｂは、開口部を有する。開口部は、穴４ｂの後方に設けられる。   In the first embodiment, the temperature sensing element 9 is provided separately from the receiving blades 5a and 5b. On the other hand, in the second embodiment, the receiving blades 12a and 12b themselves are formed of temperature sensitive elements. The receiving blade 12a has an opening. The opening is provided behind the hole 4a. The receiving blade 12b has an opening. The opening is provided behind the hole 4b.

図３においては、室内の温度は常温である。この場合、開口部は、比較的大きく開口する。この状態で、プラグ刃２ａ、２ｂが開口部に挿入される。この際、受け刃１２ａ、１２ｂとプラグ刃２ａ、２ｂとの接触力は比較的小さい。   In FIG. 3, the room temperature is room temperature. In this case, the opening is relatively large. In this state, the plug blades 2a and 2b are inserted into the openings. At this time, the contact force between the receiving blades 12a, 12b and the plug blades 2a, 2b is relatively small.

次に、図４を用いて、電源コンセント３と電源プラグ１との接続を説明する。
図４はこの発明の実施の形態２における電源コンセントの横断面図である。 Next, the connection between the power outlet 3 and the power plug 1 will be described with reference to FIG.
4 is a cross-sectional view of a power outlet according to Embodiment 2 of the present invention.

プラグ刃２ａ、２ｂが開口部に挿入された状態で電気製品の使用が開始されると、電源コンセント３と電源プラグ１との間において、電流が流れる。この際、受け刃１２ａ、１２ｂにも電流が流れる。当該電流により、受け刃１２ａ、１２ｂの温度は、内部抵抗による自己発熱で上昇する。受け刃１２ａ、１２ｂの温度が４０℃を超えると、開口部が狭くなる。この際、受け刃１２ａ、１２ｂは、プラグ刃２ａ、２ｂとの接触力を増加させる。その結果、電源コンセント３と電源プラグ１との接触状態が安定する。   When the use of the electrical product is started in a state where the plug blades 2a and 2b are inserted into the openings, a current flows between the power outlet 3 and the power plug 1. At this time, a current also flows through the receiving blades 12a and 12b. Due to the current, the temperatures of the receiving blades 12a and 12b rise due to self-heating due to internal resistance. When the temperature of the receiving blades 12a and 12b exceeds 40 ° C., the opening becomes narrow. At this time, the receiving blades 12a and 12b increase the contact force with the plug blades 2a and 2b. As a result, the contact state between the power outlet 3 and the power plug 1 is stabilized.

以上で説明した実施の形態２によれば、受け刃１２ａ、１２ｂとは別に感温素子を設けることなく、実施の形態１と同様の効果を得ることができる。   According to the second embodiment described above, the same effect as in the first embodiment can be obtained without providing a temperature sensing element separately from the receiving blades 12a and 12b.

１ 電源プラグ、 ２ａ、２ｂ プラグ刃、 ３ 電源コンセント、 ４ 外郭、 ４ａ、４ｂ 穴、 ５ａ、５ｂ 受け刃、 ６ａ、６ｂ 固定片、 ７ａ、７ｂ 可動片、
８ａ、８ｂ 絶縁板、 ９ 感温素子、 １０ 電線、 １１ａ、１１ｂ 電源線、 １２ａ、１２ｂ 受け刃 1 power plug, 2a, 2b plug blade, 3 power outlet, 4 outer shell, 4a, 4b hole, 5a, 5b receiving blade, 6a, 6b fixed piece, 7a, 7b movable piece,
8a, 8b Insulating plate, 9 Temperature sensing element, 10 Electric wire, 11a, 11b Power line, 12a, 12b

Claims (3)

電源プラグの一対の刃の一方と接触した際に電流が流れる第１受け刃と、
前記電源プラグの一対の刃の他方と接触した際に電流が流れる第２受け刃と、
前記第１受け刃において前記２受け刃の側に設けられた第１絶縁体と、
前記第２受け刃において前記１受け刃の側に設けられた第２絶縁体と、
前記第１絶縁体と前記第２絶縁体との間に設けられ、前記第１受け刃に接続され、前記第２受け刃に接続されず、前記電源プラグの一対の刃の一方が前記第１受け刃に接触して前記電源プラグの一対の刃の他方が前記第２受け刃に接触した際に前記第１受け刃に流れる電流による熱で変形し、前記第１絶縁体を押すことにより前記第１受け刃を前記電源プラグの一対の刃の一方に押し付け、前記第２絶縁体を押すことにより前記第２受け刃を前記電源プラグの一対の刃の他方に押し付ける感温素子と、
を備えた電源コンセント。 A first receiving blades current flows also when in contact with one of the pair of prongs on the plug,
A second receiving blade through which an electric current flows when contacting the other of the pair of blades of the power plug;
A first insulator provided on the side of the two receiving blades in the first receiving blade;
A second insulator provided on the side of the first receiving blade in the second receiving blade;
Provided between the first insulator and the second insulator, connected to the first receiving blade, not connected to the second receiving blade, and one of the pair of blades of the power plug is the first When the other of the pair of blades of the power plug comes into contact with the receiving blade and contacts the second receiving blade, it is deformed by the heat generated by the current flowing through the first receiving blade, and the first insulator is pressed to A temperature sensing element that presses the first receiving blade against one of the pair of blades of the power plug and presses the second insulator to press the second receiving blade against the other of the pair of blades of the power plug;
Power outlet with 前記第１受け刃は、前記感温素子に流れる電流の値が大きいほど前記電源プラグの一対の刃の一方との接触力を増加させ、
前記第２受け刃は、前記感温素子に流れる電流の値が大きいほど前記電源プラグの一対の刃の他方との接触力を増加させる請求項１に記載の電源コンセント。 The first receiving blade increases the contact force with one of the pair of blades of the power plug as the value of the current flowing through the temperature sensing element increases ,
Said second receiving blades, power outlet according to claim 1, Ru increases the contact force between the other pair of blades of the power plug as the value of the current flowing in the temperature sensitive device is large. 前記第１受け刃は、前記感温素子に電流が流れていないときに前記電源プラグの一対の刃の一方との接触力を減少させ、
前記第２受け刃は、前記感温素子に電流が流れていないときに前記電源プラグの一対の刃の他方との接触力を減少させる請求項１又は請求項２に記載の電源コンセント。 The first receiving blade reduces a contact force with one of the pair of blades of the power plug when no current flows through the temperature sensing element ;
Said second receiving blades, the power plug of the pair of blades other with claim 1 or claim 2 power outlet according to Ru reduce the contact force of when no current flows through the temperature sensing element.
JP2013098618A 2013-05-08 2013-05-08 power outlet Expired - Fee Related JP5652502B2 (en)

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