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EP3182527A1 - Ensemble de connexion améliorée de composants - Google Patents

Ensemble de connexion améliorée de composants Download PDF

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Publication number
EP3182527A1
EP3182527A1 EP15382624.3A EP15382624A EP3182527A1 EP 3182527 A1 EP3182527 A1 EP 3182527A1 EP 15382624 A EP15382624 A EP 15382624A EP 3182527 A1 EP3182527 A1 EP 3182527A1
Authority
EP
European Patent Office
Prior art keywords
plug
socket
magnetic element
component
external
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.)
Withdrawn
Application number
EP15382624.3A
Other languages
German (de)
English (en)
Inventor
Eduard Condom Gutierrez
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP15382624.3A priority Critical patent/EP3182527A1/fr
Publication of EP3182527A1 publication Critical patent/EP3182527A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/70—Structural association with built-in electrical component with built-in switch
    • H01R13/703—Structural association with built-in electrical component with built-in switch operated by engagement or disengagement of coupling parts, e.g. dual-continuity coupling part
    • H01R13/7036—Structural association with built-in electrical component with built-in switch operated by engagement or disengagement of coupling parts, e.g. dual-continuity coupling part the switch being in series with coupling part, e.g. dead coupling, explosion proof coupling
    • H01R13/7037—Structural association with built-in electrical component with built-in switch operated by engagement or disengagement of coupling parts, e.g. dual-continuity coupling part the switch being in series with coupling part, e.g. dead coupling, explosion proof coupling making use of a magnetically operated switch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • H01R11/30—End pieces held in contact by a magnet
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/6205—Two-part coupling devices held in engagement by a magnet
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/44—Means for preventing access to live contacts
    • H01R13/447—Shutter or cover plate
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases

Definitions

  • the invention refers generally to the field of electrical connection devices, and in particular, to a set of plug-and-socket components with improved security.
  • the plug-and-socket set are devices formed by two parts, or components, that connect to each other for establishing an electrical connection between a source of electricity and an electrical receiver, or sink.
  • a first part of the plug-and-socket comprises elements which form the connection with the source of electrical energy, or electricity, and act as an interface for receiving the electricity from the source and transmitting it to a second piece.
  • the second piece comprises elements that form the connection for receiving the electricity from the first piece and transmitting it to the receiver, or sink, requiring the electricity. Therefore, a plug-and-socket is a system, or set, in which the source piece inter-relates with the sink piece for completing an electrical circuit.
  • Plugs-and-sockets are well known and exist in a large number in home as well as industrial environments.
  • the simpler plugs-and-sockets lack basic secure measures against flooding or danger due to electric shocks by direct contact with the metallic parts or connectors.
  • the source parts are wall sockets at relatively low heights on the wall, which are readily available for contact with water due to flooding, or contact by babies or children which move freely around a room.
  • the default state of the circuit is open, hence there is no electricity flowing through the components.
  • a first component enters into secure electrical contact with a second component, then the circuit is closed induced by the magnetic effect of magnets, allowing electricity to flow through both components, and therefore, from the source to the sink.
  • the magnetic elements of both components facilitate performing the physical connection, as they attract to each other, and therefore self-align automatically.
  • FIG. 1 depicts, in a first embodiment of the invention, a plug-and-socket set 100, or system, in which both parts 110, 120 are mobile, that is, they are movably connected via electric cables to the source device and the sink device (not shown), respectively.
  • FIG. 2 depicts, in a second embodiment of the invention, a plug-and-socket set 200, or system, in which the first 210 of the two components is embedded in a wall and is therefore fixed, whilst the second component 220 is mobile.
  • the side view (on top) and well as the front view (below) are shown.
  • This second embodiment is typical of home or industrial environments in which the wall part, the socket, is connected to the source of electricity (not shown) and the other part is connected by means of an electric cable to the electrical device which needs power (not shown).
  • this plug-and-socket set does not have the typical protruding metallic elements or pins of conventional plugs, thereby reducing the risk of accidental electrocution by direct contact. All metallic parts are contained within the housing preventing their direct physical contact by accident.
  • FIG. 3 depicts a plug-and-socket set 300, or system, comprising two components.
  • either component may act as source or sink.
  • the first component 301 is the source component.
  • the first component 301 comprises a casing 310 suitable for embedding inside a wall and an external face 320 that remains accessible to the user.
  • the casing and the external face form together a sealed housing which is impermeable, as it does not allow the entry of water. They are produced from insulating materials, not electrically conducting, as for example, plastic.
  • the orifices of the housing for cables and on the external face for the magnetic elements are completely closed and water-tight.
  • the whole component remains sealed and water-tight, thereby rendering a plug-and-socket component with improved security as electrocution is prevented in cases where there is contact with water, such as during flooding.
  • the magnetic elements of both components facilitate performing the physical connection, as they attract to each other, and therefore align, automatically.
  • the first component 301 comprises an entry for cables and internal cables 330 for transmitting electricity to at least one first magnetic element 360 which is fixed onto a mobile plate 350 between the back part of the casings and the external face 320.
  • the mobile plate 350 is movably connected to the interior of the external face 320 by means of at least one flexible element 370 which allows the plate to move towards or away from, and parallel to, the external face.
  • the first component 301 comprises at least one second magnetic element 340 embedded, or otherwise integrated or formed or shaped or constructed, so that no metallic electrically conducting part protrudes from the plane of the external face of the plug-and-socket component.
  • the mobile plate 350 is attracted due to the magnetic force induced on the at least one second magnetic element 360 through the first magnetic element 340 such that all three magnetic elements contact each other physically in chain, closing the electric circuit that starts at the external cables 330 of the first component 301 and ends with the external face 320 of the at least second magnetic element 340.
  • the magnetic elements can comprise different combinations of magnetized and not magnetized elements, whilst they cause the mobile plate to move such that the circuit is closed as the first and second components enter into physical contact.
  • the flexible element contracts allowing the mobile plate to displace towards the external face, and also expands allowing the mobile plate to move away from the external face 320. Therefore the flexible element starts in an initial expanded state, and stores energy as it contracts under the influence of the magnetic attraction induced by the magnet. In absence of this force of attraction, the energy stored in the flexible element expands it back to its initial rest state.
  • the at least one flexible element can be a spring, or any other flexible configuration, which allows contraction and expansion sufficient to move the mobile plate to close or open the electric circuit, respectively.
  • it has to be an element that can contract under the influence of a force, but that returns to its initial uncontracted state once no more under the influence of the force.
  • the flexible element can be metallic, in some aspects it is safer to produce it from a non-conductive material in order to provide the component with more electric insulation and security.
  • the mobile plate is produced from insulating materials, not conductors of electricity, such as for example plastic.
  • FIG. 4 depicts different aspects 400 for configuring the at least one flexible element.
  • FIG. 4A depicts an aspect with only one flexible element 410. This element is configured in the central part of the mobile plate and the external face.
  • FIG. 4B depicts an aspect with two flexible elements 420. These elements are configured in the lateral part between the mobile plate and the external face.
  • FIG. 4C depicts an aspect with three flexible elements 430. These elements are configured in the central and lateral parts of the mobile plate and the external face.
  • the skilled artisan understands that any number and configuration of flexible elements is possible, while the electric circuit's closing and opening effect is produced.
  • FIG. 9 depicts another aspect for configuring the at least one flexible element and the plate.
  • the plate 910 instead of having a flat mobile plate, and flexible elements which contract and expand, the plate 910 is configured in a curved form and supported on both ends by fixed supports 920.
  • the fixed plate is convex so that when it contracts due to the magnetic attraction effect on the at least one second magnetic element, the fixed plate tends to flatten, bringing the magnetic elements closer to each other.
  • This aspect has the advantage of being even more robust as it only needs one flexible element to close and open the electric circuit. Also, it is supported in a fixed manner to the interior side of the external face, simplifying its fabrication.
  • the plurality of spring elements of FIG. 4 require the careful placement of the springs, which can loosen, fall out, and render the plug-and-socket component non-functional and useless.
  • FIG. 3 depicts also a second component 302, a simplified plug-and-socket component, comprising also a casing 315 and an external face 325 that is accessible by the user.
  • the second component 302 comprises a cable entry and internal cabling 335 for transmitting electricity from or to the magnetic element 345 which is integrated to its external face 325.
  • the at least one magnetic element is embedded so that there are no protruding electrically conducting metallic parts from the plane of the external face of this plug-and-socket component.
  • the first component 301 and second component 302 are not in physical contact.
  • the at least one second magnetic element 340 of the first component 301 interacts magnetically with the at least third magnetic element 345 of the second component 302, which has opposite polarity, and are attracted until they remain stuck together in physical contact, in a second connected state.
  • the same magnetic effect acts on the at least one first magnetic element 360 of the first component 301 to attract the mobile plate 350, causing the plate to move also towards the second component 302.
  • the at least one first metallic element 360 finds itself in physical contact with the at least one second magnetic element 340, which is itself in physical contact with the at least one third magnetic element 345, the complete electric circuit is closed and electricity flows from the source (not shown), through the first component 301, through the magnetic elements 360, 340, 345 in contact, through the second component 302, until the sink (not shown).
  • the magnetic force is sufficient to maintain both components in physical contact.
  • a person for example, a baby, moves the second component 302, or for example plays with it, a slight movement would displace the components, thereby cutting the magnetic circuit that joins them.
  • the electrical current is also interrupted, preventing the baby from entering into contact with electricity or other similar accidents.
  • the secure plug-and-socket component 301 is safe, even if touched accidentally, as there is no closed circuit to produce an electrocution. This effect combines with the fact that there are no protruding metallic parts in order to improve the security of such plug-and-socket set 300 of components.
  • this plug-and-socket set 300 allows a simplified connection of its two components, such that it also allows fast disconnection in case of unintentional manipulation. Therefore the plug-and-socket set has an improved security as it prevents electrocution by cutting the electric circuit immediately when unintentionally manipulated. However, this additional security is not in exchange of additional complexity, requiring burdensome user manipulation. The plug-and-socket set is safer and at the same time more user friendly, facilitating its utilization by users.
  • the plug-and-socket set 300 comprises attachment means 380, 385 additional to the magnets to provide guaranteed security against unintentional disconnections.
  • attachment means guarantees that such plug-and-socket set remain always connected even while being subjected to unintentional or accidental movements, or even hits or blows.
  • Another example is in hospital environments, where there are a plurality of critical life-saving medical equipment and devices connected to wall sockets, and typically a lot of cables running freely on the floor, which can be tripped on by people or carriages.
  • the attachment means comprise a first element 380 formed on an external face 320 of the first component 301 and a second element 385 formed on the external face 325 of the second component 302.
  • the attaching means are configured so that, after performing the attachment or insertion, an additional step is necessary to complete the fixing process of elements 380, 385.
  • the additional step is a rotating, or gyrating, step.
  • the additional step is a vertical, or horizontal, displacement step.
  • FIG. 5 depicts details of the attachment means 500 according to different aspects.
  • the attachment means has a pointed shape, or pin shape.
  • the male element 510 has to be aligned with the female element 520 before it can be inserted or attached.
  • This process of alignment has the advantage that it makes the operation harder for babies or children that happen to be playing with the plug or socket.
  • the female element is offset by an angle from the imaginary vertical line of the components, making completing the operation even more difficult, and also fixing the two components to each other even more firmly.
  • the attaching of both elements is completed by rotating one element with respect to the other, as indicated by the arrow.
  • FIG. 5 depicted in FIG.
  • the attaching means has a rectangular shape.
  • the male element 530 has to be aligned with the female element 540 so that they can be attached.
  • the attaching of both elements is completed by vertically displacing one element with respect to the other, as indicated by the arrow.
  • the attaching means has a triangular shape.
  • the male element 550 has to be aligned with the female element 560 so that they can be fixed to each other.
  • the attaching of both elements is completed by rotating one element with respect to the other, as indicated by the arrow.
  • FIG. 9 depicts another aspect in which the male attachment element is configured on the first component 301.
  • the female attachment element is configured on the second component 302.
  • the opposite configuration is also possible.
  • the attachment means provide additional security so that unintentional pulls, or tripping, do not unplug such devices, however whilst still allowing the simple manipulation by the user provided by the remaining features of the plug-and-socket components.
  • the magnetic elements of both components facilitate performing the physical connection, as they attract to each other, and therefore align, automatically.
  • the female attachment means are configured from factory such that the manufactured recess, or indentation, or gap, is not a through hole, but an wall-enclosed hole. In this manner, even during flooding, water does not enter the plug-and-socket component via this gap.
  • Both components of the plug-and-socket set, or system are configured to be factory produced according to the described features.
  • these are integrated or embedded in the factory at the same time as the electrical appliances to which they are coupled to and provide power.
  • an adapter is provided to couple to a conventional plug and enable conventional appliances to receive power from a plug-and-socket component as invented.
  • FIG. 6 depicts a plug-and-socket adapter component 610 configured to enable connecting any existing electrical device comprising a conventional plug 690 to another mobile component 110 or a fixed (wall) component 210 of the plug-and-socket set of the invention.
  • the adapter component 610 has the same configuration and features as the mobile component of FIG. 3 on the half (its left half) that makes contact with the other (first) component of the invention.
  • the adapter 610 comprises at least one external magnetic element 345 configured to attract another external magnetic element of a complementary plug-and-socket component.
  • the at least one magnetic element 345 is embedded in such a manner that no metallic electrically conducting part protrudes from the plane 325 of the adapter component 610.
  • the adapter 610 also comprises in this example attachment means 385.
  • the at least one magnetic element 345 is in physical contact with at least one metal tube 620 configured for receiving and housing at least one pin of a conventional plug 690.
  • FIG. 7 depicts an adapter 700 according to another aspect of the invention.
  • FIG. 8 depicts different plug and socket configurations 800 for which the skilled person would derive how to adapt or configure the adapter component of FIG. 6 so that it can be used with any existing plug.
  • the skilled artisan would also understand how to configure or adapt any other feature of the different components of the plug-and-socket of the invention so that they can be used according to the norms and standards of different countries (such as number or layout of pins).
  • Another embodiment of the invention provides a plug-and-socket system, or set, with improved security that comprises any two, or more, complementary plug-and-socket components chosen from the different types disclosed.
  • One aspect comprises two secure plug-and-socket components 301 of FIG. 3 .
  • Another aspect comprises two simplified plug-and-socket components 302 of FIG. 3 .
  • Another aspect comprises one secure plug-and-socket component 301 of FIG. 3 together with a simplified plug-and-socket component 302 of FIG. 3 .
  • Another aspect comprises one secure plug-and-socket component 301 of FIG. 3 together with a plug-and-socket adapter component 610 of FIG. 6 .
  • Another aspect comprises one simplified plug-and-socket component 302 of FIG. 3 together with a plug-and-socket adapter component 610 of FIG. 6 .
  • Another embodiment of the invention provides a method of producing, or manufacturing, or fabricating, a secure plug-and-socket component with improved security, the method comprising embedding at least one external electrically conducting magnetic element in an external face of the component, connecting a plate to the interior of the external face by means of at least one flexible element, embedding at least one internal electrically conducting magnetic element in the plate such that both magnetic elements are moveably attached, however kept without electrical contact by means of the at least one flexible element, connecting at least one electrical conducting means in electrical contact with the at least one internal magnetic element, enclosing said elements and the external face as a casing forming a sealed housing, the secure plug-and-socket component being configured to allow electrical flow once a magnetic force of attraction is applied to the at least one external magnetic element attracting the at least one internal magnetic element causing them to contact electrically, whilst the electric flow is cut in absence of the magnetic force of attraction caused by the separation of the at least one external magnetic element from the at least one internal magnetic element due to the force exerte
  • Another embodiment of the invention provides a method of producing, or manufacturing, or fabricating, a simplified plug-and-socket component from a conventional plug, the method comprising removing all the conventional plug pins leaving corresponding gaps, embedding, in each corresponding gap, at least one external electrically conducting magnetic element so that it does not extend beyond, or protrude, the plane of the external face of the simplified component.
  • the different embodiments, aspects, and examples of the invention define a user-friendly, economic and more secure plug-and-socket set of components, or set of plug components and socket components, with simple construction and user-handling, which is water-tight and minimizes the exposition to dangerous electrically conducting metallic elements.

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  • Details Of Connecting Devices For Male And Female Coupling (AREA)
EP15382624.3A 2015-12-15 2015-12-15 Ensemble de connexion améliorée de composants Withdrawn EP3182527A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15382624.3A EP3182527A1 (fr) 2015-12-15 2015-12-15 Ensemble de connexion améliorée de composants

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15382624.3A EP3182527A1 (fr) 2015-12-15 2015-12-15 Ensemble de connexion améliorée de composants

Publications (1)

Publication Number Publication Date
EP3182527A1 true EP3182527A1 (fr) 2017-06-21

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EP15382624.3A Withdrawn EP3182527A1 (fr) 2015-12-15 2015-12-15 Ensemble de connexion améliorée de composants

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107732565A (zh) * 2017-10-16 2018-02-23 北方民族大学 一种磁性新型安全插座和插头
CN107978937A (zh) * 2017-12-04 2018-05-01 平潭综合实验区富尔康健康科技有限公司 一种插头及插座
GB2564687A (en) * 2017-07-19 2019-01-23 Laporta Giovanni An electrical connection socket outlet and plug
CN109818200A (zh) * 2019-04-04 2019-05-28 西安科技大学 一种防水防误触插座
CN110854576A (zh) * 2019-12-23 2020-02-28 无锡风易达建筑装饰工程有限公司 一种防误触电路连接装置

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3521216A (en) * 1968-06-19 1970-07-21 Manuel Jerair Tolegian Magnetic plug and socket assembly
US4317969A (en) * 1978-09-01 1982-03-02 Hannes Riegler Electrical line-connector
US5829987A (en) * 1995-04-01 1998-11-03 Fritsch; Klaus-Dieter Electromechanical connection device
GB2341735A (en) * 1998-07-07 2000-03-22 Seiko Instr Inc Switched terminal for connection of charger
EP2207241A2 (fr) * 2008-12-23 2010-07-14 Einam Yizhak Amotz Appareil et procédé de transfert d'alimentation d'une unité stationnaire vers une unité mobile
US20130273752A1 (en) * 2010-02-02 2013-10-17 Apex Technologies, Inc. Interposer connectors with magnetic components
EP2704265A2 (fr) * 2011-04-27 2014-03-05 Autoconnector Co., Ltd Structure améliorée d'un dispositif de connexion électrique électromagnétique
US20140120746A1 (en) * 2012-10-24 2014-05-01 Rostislav Persion Electrical and fiber optic connector with magnetic electrical contacts
US20140287601A1 (en) * 2013-03-22 2014-09-25 Samsung Electronics Co., Ltd. Magnetic connection device
WO2015168978A1 (fr) * 2014-05-05 2015-11-12 中兴通讯股份有限公司 Dispositif d'attraction et raccord

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3521216A (en) * 1968-06-19 1970-07-21 Manuel Jerair Tolegian Magnetic plug and socket assembly
US4317969A (en) * 1978-09-01 1982-03-02 Hannes Riegler Electrical line-connector
US5829987A (en) * 1995-04-01 1998-11-03 Fritsch; Klaus-Dieter Electromechanical connection device
GB2341735A (en) * 1998-07-07 2000-03-22 Seiko Instr Inc Switched terminal for connection of charger
EP2207241A2 (fr) * 2008-12-23 2010-07-14 Einam Yizhak Amotz Appareil et procédé de transfert d'alimentation d'une unité stationnaire vers une unité mobile
US20130273752A1 (en) * 2010-02-02 2013-10-17 Apex Technologies, Inc. Interposer connectors with magnetic components
EP2704265A2 (fr) * 2011-04-27 2014-03-05 Autoconnector Co., Ltd Structure améliorée d'un dispositif de connexion électrique électromagnétique
US20140120746A1 (en) * 2012-10-24 2014-05-01 Rostislav Persion Electrical and fiber optic connector with magnetic electrical contacts
US20140287601A1 (en) * 2013-03-22 2014-09-25 Samsung Electronics Co., Ltd. Magnetic connection device
WO2015168978A1 (fr) * 2014-05-05 2015-11-12 中兴通讯股份有限公司 Dispositif d'attraction et raccord

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2564687A (en) * 2017-07-19 2019-01-23 Laporta Giovanni An electrical connection socket outlet and plug
GB2564687B (en) * 2017-07-19 2022-05-04 Laporta Giovanni An electrical connection socket outlet and plug
CN107732565A (zh) * 2017-10-16 2018-02-23 北方民族大学 一种磁性新型安全插座和插头
CN107978937A (zh) * 2017-12-04 2018-05-01 平潭综合实验区富尔康健康科技有限公司 一种插头及插座
CN109818200A (zh) * 2019-04-04 2019-05-28 西安科技大学 一种防水防误触插座
CN110854576A (zh) * 2019-12-23 2020-02-28 无锡风易达建筑装饰工程有限公司 一种防误触电路连接装置

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