EP0908973A2 - Auswechselbarer überspannungsgeschützter Stecker - Google Patents

Auswechselbarer überspannungsgeschützter Stecker Download PDF

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Publication number
EP0908973A2
EP0908973A2 EP98112525A EP98112525A EP0908973A2 EP 0908973 A2 EP0908973 A2 EP 0908973A2 EP 98112525 A EP98112525 A EP 98112525A EP 98112525 A EP98112525 A EP 98112525A EP 0908973 A2 EP0908973 A2 EP 0908973A2
Authority
EP
European Patent Office
Prior art keywords
main body
surge
plug
surge protective
bottom cover
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Withdrawn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
EP98112525A
Other languages
English (en)
French (fr)
Other versions
EP0908973A3 (de
Inventor
Albert Stekelenburg
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.)
All Line Inc
Original Assignee
All Line Inc
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 All Line Inc filed Critical All Line Inc
Publication of EP0908973A2 publication Critical patent/EP0908973A2/de
Publication of EP0908973A3 publication Critical patent/EP0908973A3/de
Withdrawn legal-status Critical Current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
    • H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
    • H01R13/6666—Structural association with built-in electrical component with built-in electronic circuit with built-in overvoltage protection
    • 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
    • H01R13/6608—Structural association with built-in electrical component with built-in single component
    • H01R13/6641—Structural association with built-in electrical component with built-in single component with diode
    • 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
    • H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
    • H01R13/6691—Structural association with built-in electrical component with built-in electronic circuit with built-in signalling means
    • 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
    • H01R13/717—Structural association with built-in electrical component with built-in light source
    • H01R13/7175—Light emitting diodes (LEDs)

Definitions

  • the present invention relates to a surge protective means for protecting an AC power supply from damaging surges and spikes.
  • a surge protector is usually mounted in a machine or equipment or on a plug thereof.
  • a surge absorber an important element of the surge protector, that is, a surge absorber, has only limited times of service. That is, there is a relativity between an impulse current and an impulse width. This makes the surge absorber have an attenuated life.
  • a conventional surge protector When such conventional surge protector is mounted in a circuitry, it shall lose its function to provide another protection against surge once it has achieved a first time surge protection.
  • a primary object of the present invention is to provide a plug having a surge protective means mounted therein.
  • Another object of the present invention is to provide a plug having a replaceable surge protective means mounted therein, that is, to provide a replaceable surge protective plug.
  • a further object of the present invention is to provide a plug having a surge protective means on which a light-emitting diode (LED) is provided, such that the LED keeps lighting when the plug is in a normal service condition and the LED extinguishes when the plug is no longer workable in protection against surge.
  • LED light-emitting diode
  • the present invention relates to a plug having a surge protective means.
  • the plug mainly includes a main body 1, a conductor 2, and a set of pins 3.
  • An LED 11 is provided on a top surface of the main body 1, and a bottom cover 12 forms a part of a bottom portion of the main body 1.
  • the bottom cover 12 can be removed from the bottom portion of the main body 1 for access of three connection terminals 13, 14 and 15 by loosening screws 12a, 12b from the main body 1 as shown in Fig. 3.
  • a protective circuit is arranged inside the main body 1 and will be described in more details later.
  • the LED 11 lights when there is a current flowing through the plug, representing the plug is usable and needs not replacement. In the event the LED 11 extinguishes even there is a current passing the plug, it means the plug can no longer absorb any surge and needs replacement with a good one.
  • Fig. 4 is a circuit diagram of an embodiment of the present invention. As shown, the terminals 13, 14 and 15 are connected with lines L, N, and E and the pins 3 are inserted into a power socket (not shown).
  • the plug of the present invention provides its protective function against surge because of an important element, a varistor or MOV, included in the circuit.
  • the varistor is a surge absorber formed from a non-linear voltage coupling variable resistor.
  • impedances at two ends of this element vary with different voltages between two ends of the element.
  • the impedance of the element shall instantaneously drop from a high impedance to a low impedance within a response time less than 10 nanoseconds (ns), making the element instantaneously change from an apporximate insulator to an approximate good conductor.
  • This high voltage and low impedance shall cause a large part of current to flow through this element as an bypass, so that energy of the surge is absorbed by the element and transformed into heat energy which dissipates into the air. The voltage is then recovered to a tolerable level to protect the electric appliance or equipment from the damaging surge.
  • FIG. 4 three varistors (MOV's) 16, 17, and 18 are separately connected between each of the three electrodes L, N, and E (ground) and the pins 3 to serve as the surge protective means.
  • MOV's varistors
  • a surge or spike enters into any one of the electrodes L, N, and E, it will be absorbed by the MOV connected to that electrode.
  • a thermal fuse 19 is additionally provided to the electrode L in the plug of the present invention.
  • the fuse 19 is enveloped by the MOV's 16, 17, and 18 to achieve a temperature coupling condition.
  • the MOV's 16, 17, and 18 may absorb the full surge energy and may endure more than once similar surge without a temperature raise high enough to burn out the fuse 19.
  • the appliance or equipment connected to the plug can still be supplied with normal power and the LED 11 on the plug keeps lighting.
  • the MOV's 16, 17, and 18 can still absorb the surge energy, they shall have largely reduced service time or even be used for once only. Thereafter, the plug shall lose its function of absorbing any subsequent surge.
  • the plug of the present invention due to the provision of the thermal fuse 19 which may be burned out by the high temperature caused by the large amount of surge energy absorbed by the MOV's 16, 17, and 18, may still protect the electric appliance or equipment connected thereto from the next surge when the MOV's 16, 17, and 18 are no longer workable, because the burned-out fuse 19 has successfully disconnected the power supply.
  • the LED 11 extinguishes, indicating a new and good protective module, that is, a main body 1, must be used to replace the old one.
  • the present invention provides a surge protective plug for protecting the electric appliance or equipment connected thereto from damaging by a surge.
  • the plug has an LED 11 which indicates the plug has the surge protection function if the LED lights, and not if the LED extinguishes. Moreover, a consumer may easily replace a useless plug with a new and good one when necessary.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
EP98112525A 1997-10-07 1998-07-07 Auswechselbarer Überspannungsgeschützter Stecker Withdrawn EP0908973A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US94454897A 1997-10-07 1997-10-07
US944548 2001-08-31

Publications (2)

Publication Number Publication Date
EP0908973A2 true EP0908973A2 (de) 1999-04-14
EP0908973A3 EP0908973A3 (de) 2000-07-12

Family

ID=25481621

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98112525A Withdrawn EP0908973A3 (de) 1997-10-07 1998-07-07 Auswechselbarer Überspannungsgeschützter Stecker

Country Status (1)

Country Link
EP (1) EP0908973A3 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100425423B1 (ko) * 2000-08-31 2004-03-30 장기권 전자파를 흡수, 제거하는 접지 플러그
AT12591U1 (de) * 2011-03-25 2012-08-15 Feller Gmbh Elektrischer stecker sowie verfahren zu seiner herstellung
WO2016055055A1 (de) 2014-10-09 2016-04-14 Harting Electric Gmbh & Co. Kg Steckverbinder
CN110690605A (zh) * 2019-10-29 2020-01-14 公牛集团股份有限公司 一种插头保护套、插头结构及电气设备
US20240087779A1 (en) * 2022-09-14 2024-03-14 Applied Research Associates, Inc. Surge arresting power cable
US12057667B2 (en) 2021-05-11 2024-08-06 Norman R. Byrne Electrical plug with replaceable surge protector

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2582875A1 (fr) * 1985-05-29 1986-12-05 Baudry Jean Fiche ou bloc intercalaire a protections multiples et a raccorder sur prise reseau
EP0494963B1 (de) * 1989-10-02 1996-03-20 Raychem Corporation Elektrisches heizelement mit elektrischem verbinder
US5466165A (en) * 1994-01-06 1995-11-14 Woods Industries, Inc. Portable outlet adapter
US5718600A (en) * 1996-01-17 1998-02-17 Raychem Corporation Electrical plug

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100425423B1 (ko) * 2000-08-31 2004-03-30 장기권 전자파를 흡수, 제거하는 접지 플러그
AT12591U1 (de) * 2011-03-25 2012-08-15 Feller Gmbh Elektrischer stecker sowie verfahren zu seiner herstellung
WO2016055055A1 (de) 2014-10-09 2016-04-14 Harting Electric Gmbh & Co. Kg Steckverbinder
US9935406B2 (en) 2014-10-09 2018-04-03 Harting Electric Gmbh & Co. Kg Plug
CN110690605A (zh) * 2019-10-29 2020-01-14 公牛集团股份有限公司 一种插头保护套、插头结构及电气设备
US12057667B2 (en) 2021-05-11 2024-08-06 Norman R. Byrne Electrical plug with replaceable surge protector
US20240087779A1 (en) * 2022-09-14 2024-03-14 Applied Research Associates, Inc. Surge arresting power cable
US12531173B2 (en) * 2022-09-14 2026-01-20 Applied Research Associates, Inc. Surge arresting power cable

Also Published As

Publication number Publication date
EP0908973A3 (de) 2000-07-12

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