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JP2004158332A - Plug socket connecting mechanism for dc power supply - Google Patents

Plug socket connecting mechanism for dc power supply Download PDF

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Publication number
JP2004158332A
JP2004158332A JP2002323731A JP2002323731A JP2004158332A JP 2004158332 A JP2004158332 A JP 2004158332A JP 2002323731 A JP2002323731 A JP 2002323731A JP 2002323731 A JP2002323731 A JP 2002323731A JP 2004158332 A JP2004158332 A JP 2004158332A
Authority
JP
Japan
Prior art keywords
plug
power supply
locking member
movable locking
solenoid coil
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2002323731A
Other languages
Japanese (ja)
Inventor
Toshiki Shinkai
敏樹 新開
Takashi Naito
俊 内藤
Junichi Miyake
淳一 三宅
Hiroshi Kobori
浩 小堀
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Engineering Corp
Original Assignee
Toshiba Engineering Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Engineering Corp filed Critical Toshiba Engineering Corp
Priority to JP2002323731A priority Critical patent/JP2004158332A/en
Publication of JP2004158332A publication Critical patent/JP2004158332A/en
Pending legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that a plug receptacle of a plug socket for a DC power supply has a pair of metal pieces at an anode side and a cathode side, which pieces have equal length and when the plug is drawn out during energizing, an arc is generated that can injure a human body and to damage electric equipment. <P>SOLUTION: A solenoid coil 17 is connected to an anode end 16 connected to the DC power supply 11. A movable locking member 19 to be driven by the coil 17 is inserted into a locking cutout part 23 provided on the anode side cap blade 22 of the plug, and the member 19 locks the attachment plug in an energizing state. Thus, the arc is prevented from being generated by drawing out the plug during the energizing. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は、直流電源用コンセントに接続され通電状態にある差込プラグが引き抜かれないようにした直流電源用コンセント接続機構に関する。
【0002】
【従来の技術】
インフォーメーションテクノロジーなどの進歩によるOA機器や電化製品の増加により、高信頼性電源確保の要求がある。また、大量エネルギー消費抑制のため、直流給電方式が採用されている。OA機器や電化製品などの電気機器への直流電源は、直流電源用コンセントに接続された差込プラグを介して供給される。図3により代表的なコンセント31の構成を説明する。すなわち、コンセント31の差込プラグ受けは、一般に、正極側および負極側とも各々、相対する等長の金属片32a、32bならびに33a、33bで差込プラグ受けを構成し、差し込まれた差込プラグ34、35の栓刃を所定の位置で支持固定し直流電源36によって電気機器37に通電する構成である。
【0003】
また、抜け止め付きコンセントの導電栓刃受孔および接地栓刃受孔を小さく形成し、コンセントの内部へのホコリ侵入が少なくなり火災発生の可能性を少なくする技術が知られている。(例えば、特許文献1参照)。他に、誤って電源仕様の異なる電源ユニットを装着しようとしても電気的接続が達成されず、電気製品が作動しないようにした技術も知られている。(例えば、特許文献2参照)。
【0004】
【特許文献1】
特開2000−340286号公報
【特許文献2】
特開平8−55652号公報
【0005】
【発明が解決しようとする課題】
OA機器や電化製品などに直流電源用コンセントから差込プラグを通して直流電源供給を行い負荷がかかり直流電流が流れている場合に、故意あるいは不本意に差込プラグを引き抜くかまたは引き抜かれた時は、両極側の相対する差込プラグ受けを構成している金属片と差込プラグ栓刃との接触部分が同時に切り離されるため、直流電源であるが故に、アークの発生の可能性があり、人体および機器に損傷を生じさせる危険があった。また、特許文献1、特許文献2によっても、通電中に差込プラグが引き抜かれると上述したようなアークの発生が起こり、人体および機器に損傷を生じさせる危険があった。
【0006】
本発明は、直流電源用コンセントに接続され通電状態にある差込プラグが引き抜かれないようにした直流電源用コンセント接続機構を提供することを目的とする。
【0007】
【課題を解決するための手段】
上記課題を解決するために本発明に係わる直流電源用コンセント接続機構は、直流電源に接続されたソレノイドコイルと、このソレノイドコイルにより駆動される可動係止部材と、差込プラグの栓刃の前記可動係止部材に対向する位置に形成された係止切欠部とを具備し、前記ソレノイドコイルに規定値以上の電流が流れると前記可動係止部材が前記係止切欠部に挿入されることを要旨とする。
【0008】
さらに本発明に係わる直流電源用コンセント接続機構は、前記可動係止部材の先端が鋭角状に形成されていることを要旨とする。
【0009】
【発明の実施の形態】
以下に本発明に係わる実施の形態を図を参照して説明する。直流電源11に接続されているコンセント12は、負極端13に一対の等長金属片14、15が接続されている。直流電源11の正極端16はソレノイドコイル17の一端に接続され、ソレノイドコイル17の他端は金属片18に接続されている。ソレノイドコイル17の中心には可動係止部材19が装着されている。この可動係止部材19、ソレノイドコイル17に規定値以上の電流が流れると上方すなわち金属片18へ向かって駆動され、ソレノイドコイル17の電流が規定値より低下すると下方すなわち金属片18から離れる方向に戻る。可動係止部材19の駆動状況は両矢印20にて示してある。また、可動係止部材19の先端は鋭角状に形成されている。
【0010】
差込プラグの負極側栓刃21は両面平坦の通常の形状であるが、正極側栓刃22は、金属片18に接する上面は平坦にされているが、下面には断面三角形状の係止切欠部24が形成されている。正極側栓刃22、負極側栓刃21は負荷となる電気機器25に接続されている。
【0011】
さて、上述したような構成の直流電源用コンセントにて、差込プラグが挿入されていない状態、すなわち、通電されていない状態ではソレノイドコイル17には電流が流れておらず、可動係止部材19は下方に引き下げられている。この状態で差込プラグの正極側栓刃22、負極側栓刃21をコンセント12へ挿入する場合には、ソレノイドコイル17が駆動しておらず、可動係止部材19が下方位置に戻っているため、両栓刃23、22はコンセント12の所定位置まで挿入される。
【0012】
直流電源11から電気機器24へ通電され、ソレノイドコイル17に規定値以上の電流が流れると、このソレノイドコイル17の作動により可動係止部材19が上方すなわち対向する金属片18の方向へ駆動される。上昇した可動係止部材19は、図1に示す如く、正極側栓刃22に形成された係止切欠部23中に挿入され、通電中はこの状態を維持する。
【0013】
この結果、通電中に誤って差込プルグを引き抜こうとしても正極側栓刃22の係止切欠部23に挿入されている可動係止部材19によって強制的にロックされ、差込プラグの引き抜きは防止される。
【0014】
直流電源11から電気機器25への通電を停止したり規定値より低下した電流になった場合には、ソレノイドコイル17を流れる電流が減少し、ソレノイドコイル17が作動しなくなり、可動係止部材19は下方すなわち対向する金属片18から離れる方向に戻る。この結果、正極側栓刃22の係止切欠部23から可動係止部材19が離れ、正極側栓刃22のロックは解除され、差込プラグの引き抜きが可能となる。このようにして差込プラグが通電状態にあるときは、引き抜きが強制的に抑止され、通電が停止あるいは規定値より低下した電流になったときには、ロックを解除するように構成したため、アークの発生を防止することが可能となった。
【0015】
【発明の効果】
上述したような本発明に係わる直流電源用コンセント接続機構により、電気機器25へ通電中においては差込プラグの栓刃が強制的にロックされ、通電が停止あるいは規定値より低下した電流になると、このロックが解除されアークの発生を防止することができ、人体および電気機器25への損傷を防ぐことが可能となった。
【図面の簡単な説明】
【図1】本発明に係わる直流電源用コンセント接続機構を示す構成図。
【図2】従来の直流電源用コンセント接続機構を示す構成図。
【符号の説明】
11…直流電源
12…コンセント
13…負極端
14、15…等長金属片
16…正極端
17…ソレノイドコイル
18…金属片
19…可動係止部材
20…両矢印
21…負極側栓刃
22…正極側栓刃
23…係止切欠部
24…電気機器
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a DC power outlet connection mechanism that is connected to a DC power outlet and prevents a plug that is energized from being pulled out.
[0002]
[Prior art]
Due to the increase in OA equipment and electric appliances due to advances in information technology and the like, there is a demand for securing a highly reliable power supply. In addition, a DC power supply system is employed to suppress mass energy consumption. DC power to electrical equipment such as OA equipment and electrical appliances is supplied via a plug connected to a DC power outlet. The configuration of a typical outlet 31 will be described with reference to FIG. That is, the plug receptacle of the outlet 31 generally comprises a plug receptacle made of metal pieces 32a, 32b and 33a, 33b of the same length facing each other on both the positive electrode side and the negative electrode side. In this configuration, the blades 34 and 35 are supported and fixed at predetermined positions, and power is supplied to the electric device 37 by the DC power supply 36.
[0003]
In addition, there is known a technology in which a conductive blade receiving hole and a grounding blade receiving hole of an outlet with a retaining member are formed to be small, so that dust is less likely to enter the inside of the outlet and a fire is less likely to occur. (For example, see Patent Document 1). In addition, there is also known a technique in which even if a power supply unit having a different power supply specification is erroneously mounted, electrical connection is not achieved and an electric product does not operate. (For example, see Patent Document 2).
[0004]
[Patent Document 1]
JP 2000-340286 A [Patent Document 2]
JP-A-8-55652
[Problems to be solved by the invention]
When the DC power is supplied from the DC power outlet to the OA equipment or electrical appliance through the plug and the load is applied and the DC current is flowing, if the plug is intentionally or unintentionally pulled out or pulled out However, since the contact portions of the metal plugs and the plug plug blades that constitute the opposite plug plug receptacles on both pole sides are simultaneously cut off, there is a possibility of arcing because of the DC power supply, And risk of damage to equipment. Also, according to Patent Documents 1 and 2, if the insertion plug is pulled out during energization, the above-described arc occurs, and there is a risk of causing damage to a human body and equipment.
[0006]
SUMMARY OF THE INVENTION It is an object of the present invention to provide a DC power outlet connection mechanism that is connected to a DC power outlet and prevents a plug that is energized from being pulled out.
[0007]
[Means for Solving the Problems]
In order to solve the above problems, a DC power outlet connection mechanism according to the present invention includes a solenoid coil connected to a DC power source, a movable locking member driven by the solenoid coil, and a plug blade of a plug. A locking notch formed at a position facing the movable locking member, wherein the movable locking member is inserted into the locking notch when a current of a prescribed value or more flows through the solenoid coil. Make a summary.
[0008]
Furthermore, the outlet connection mechanism for a DC power supply according to the present invention is characterized in that the tip of the movable locking member is formed in an acute angle.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment according to the present invention will be described below with reference to the drawings. An outlet 12 connected to a DC power supply 11 has a pair of equal-length metal pieces 14 and 15 connected to a negative electrode end 13. The positive terminal 16 of the DC power supply 11 is connected to one end of a solenoid coil 17, and the other end of the solenoid coil 17 is connected to a metal piece 18. A movable locking member 19 is mounted at the center of the solenoid coil 17. When a current of a specified value or more flows through the movable locking member 19 and the solenoid coil 17, the movable locking member 19 is driven upward, that is, toward the metal piece 18, and when the current of the solenoid coil 17 falls below the specified value, it is driven downward, that is, in a direction away from the metal piece 18. Return. The driving state of the movable locking member 19 is indicated by a double arrow 20. The tip of the movable locking member 19 is formed in an acute angle.
[0010]
The negative plug 21 of the insertion plug has a normal shape with flat surfaces on both sides, while the positive plug 22 has a flat upper surface in contact with the metal piece 18, but a triangular cross section on the lower surface. A notch 24 is formed. The positive blade 22 and the negative blade 21 are connected to an electric device 25 serving as a load.
[0011]
Now, in the DC power outlet having the above-described configuration, when the insertion plug is not inserted, that is, when the power is not supplied, no current flows through the solenoid coil 17 and the movable locking member 19 Has been pulled down. When the positive blade 22 and the negative blade 21 of the plug are inserted into the outlet 12 in this state, the solenoid coil 17 is not driven and the movable locking member 19 returns to the lower position. Therefore, both the blades 23 and 22 are inserted to a predetermined position of the outlet 12.
[0012]
When current is supplied from the DC power supply 11 to the electric device 24 and a current equal to or more than a specified value flows through the solenoid coil 17, the operation of the solenoid coil 17 drives the movable locking member 19 upward, that is, in the direction of the opposing metal piece 18. . The raised movable locking member 19 is inserted into a locking notch 23 formed in the positive electrode-side blade 22 as shown in FIG. 1, and this state is maintained during energization.
[0013]
As a result, even if the plug is accidentally pulled out during energization, the plug is forcibly locked by the movable locking member 19 inserted into the locking notch 23 of the positive blade 22, and the plug is pulled out. Is prevented.
[0014]
When the current supply from the DC power supply 11 to the electric device 25 is stopped or the current becomes lower than a specified value, the current flowing through the solenoid coil 17 decreases, the solenoid coil 17 stops operating, and the movable locking member 19 Returns downward, that is, away from the opposing metal piece 18. As a result, the movable locking member 19 is separated from the locking notch 23 of the positive blade 22, the lock of the positive blade 22 is released, and the insertion plug can be pulled out. In this way, when the insertion plug is in the energized state, the pull-out is forcibly inhibited, and when the energization is stopped or the current becomes lower than the specified value, the lock is released. Can be prevented.
[0015]
【The invention's effect】
By the outlet connection mechanism for DC power supply according to the present invention as described above, the plug blade of the insertion plug is forcibly locked while the electric device 25 is energized, and when the energization is stopped or the current becomes lower than a specified value, This lock is released, and the occurrence of an arc can be prevented, so that damage to the human body and the electric device 25 can be prevented.
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing a DC power outlet connection mechanism according to the present invention.
FIG. 2 is a configuration diagram showing a conventional DC power outlet connection mechanism.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 ... DC power supply 12 ... Outlet 13 ... Negative electrode end 14, 15 ... Equal length metal piece 16 ... Positive electrode end 17 ... Solenoid coil 18 ... Metal piece 19 ... Movable locking member 20 ... Double arrow 21 ... Negative electrode side blade 22 ... Positive electrode Side blade 23: locking notch 24: electrical equipment

Claims (2)

直流電源に接続されたソレノイドコイルと、このソレノイドコイルにより駆動される可動係止部材と、差込プラグの栓刃の前記可動係止部材に対向する位置に形成された係止切欠部とを具備し、前記ソレノイドコイルに規定値以上の電流が流れると前記可動係止部材が前記係止切欠部に挿入されることを特徴とする直流電源用コンセント接続機構。A solenoid coil connected to a DC power supply, a movable locking member driven by the solenoid coil, and a locking notch formed at a position facing the movable locking member of the plug blade of the insertion plug. A DC power outlet connection mechanism, wherein the movable locking member is inserted into the locking notch when a current equal to or more than a specified value flows through the solenoid coil. 前記可動係止部材の先端は鋭角状に形成されていることを特徴とする請求項1記載の直流電源用コンセント接続機構。The direct-current power supply outlet connection mechanism according to claim 1, wherein a tip of the movable locking member is formed in an acute angle.
JP2002323731A 2002-11-07 2002-11-07 Plug socket connecting mechanism for dc power supply Pending JP2004158332A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002323731A JP2004158332A (en) 2002-11-07 2002-11-07 Plug socket connecting mechanism for dc power supply

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002323731A JP2004158332A (en) 2002-11-07 2002-11-07 Plug socket connecting mechanism for dc power supply

Publications (1)

Publication Number Publication Date
JP2004158332A true JP2004158332A (en) 2004-06-03

Family

ID=32803525

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002323731A Pending JP2004158332A (en) 2002-11-07 2002-11-07 Plug socket connecting mechanism for dc power supply

Country Status (1)

Country Link
JP (1) JP2004158332A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5397480B2 (en) * 2009-12-10 2014-01-22 東芝ライテック株式会社 DC power supply
US9666977B2 (en) 2015-07-29 2017-05-30 Abb Schweiz Ag Direct current socket with direct current arc protection
WO2017090388A1 (en) * 2015-11-27 2017-06-01 ソニー株式会社 Connector, connecting method, cutoff method, electrically-powered moving body, and power supply system
US10483693B2 (en) 2015-09-24 2019-11-19 Abb Schweiz Ag Sliding contact assembly for accelerating relative separation speed between plug contacts and socket outlet contacts
CN114914105A (en) * 2021-02-10 2022-08-16 瞻博网络公司 Apparatus, system, and method for protecting power connectors from high power arcing

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5397480B2 (en) * 2009-12-10 2014-01-22 東芝ライテック株式会社 DC power supply
US9666977B2 (en) 2015-07-29 2017-05-30 Abb Schweiz Ag Direct current socket with direct current arc protection
US10483693B2 (en) 2015-09-24 2019-11-19 Abb Schweiz Ag Sliding contact assembly for accelerating relative separation speed between plug contacts and socket outlet contacts
WO2017090388A1 (en) * 2015-11-27 2017-06-01 ソニー株式会社 Connector, connecting method, cutoff method, electrically-powered moving body, and power supply system
JPWO2017090388A1 (en) * 2015-11-27 2018-09-13 ソニー株式会社 Connector, connection method, disconnection method, electric vehicle and power supply system
CN114914105A (en) * 2021-02-10 2022-08-16 瞻博网络公司 Apparatus, system, and method for protecting power connectors from high power arcing
EP4043998A1 (en) * 2021-02-10 2022-08-17 Juniper Networks, Inc. Apparatus, system, and method for protecting power connectors against high-power arcing
US11923642B2 (en) 2021-02-10 2024-03-05 Juniper Networks, Inc. Apparatus, system, and method for protecting power connectors against high-power arcing

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