[go: up one dir, main page]

WO1988010026A1 - Appareil electrique - Google Patents

Appareil electrique Download PDF

Info

Publication number
WO1988010026A1
WO1988010026A1 PCT/GB1987/000399 GB8700399W WO8810026A1 WO 1988010026 A1 WO1988010026 A1 WO 1988010026A1 GB 8700399 W GB8700399 W GB 8700399W WO 8810026 A1 WO8810026 A1 WO 8810026A1
Authority
WO
WIPO (PCT)
Prior art keywords
enclosure
circuits
filter
connector
filter elements
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.)
Ceased
Application number
PCT/GB1987/000399
Other languages
English (en)
Inventor
Richard Bartlett Smith
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.)
Allard Way Holdings Ltd
Original Assignee
GEC Avionics Ltd
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
Priority to GB8530721A priority Critical patent/GB2184293B/en
Application filed by GEC Avionics Ltd filed Critical GEC Avionics Ltd
Priority to PCT/GB1987/000399 priority patent/WO1988010026A1/fr
Publication of WO1988010026A1 publication Critical patent/WO1988010026A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • H01R13/719—Structural association with built-in electrical component specially adapted for high frequency, e.g. with filters
    • H01R13/7197—Structural association with built-in electrical component specially adapted for high frequency, e.g. with filters with filters integral with or fitted onto contacts, e.g. tubular filters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H1/00—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
    • H03H1/0007—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network of radio frequency interference filters
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H05K9/0007—Casings
    • H05K9/0018—Casings with provisions to reduce aperture leakages in walls, e.g. terminals, connectors, cables

Definitions

  • This invention relates to electrical apparatus. More particularly the invention relates to electrical apparatus of the kind comprising an enclosure housing electronic circuits. Where the enclosure is required to provide not merely a housing for the circuits, but also a clean environment for the circuits both in respect of atmospheric and electrical conditions the enclosure is required, to a greater or lesser degree, to be sealed against the ambient atmosphere, and will also consist of a suitable material such as to provide electrical screening. It is also, however, sometimes also necessary to include in at least some of the leads whereby the circuits are connected with equipment external of the enclosure, electric filters to prevent electrical interference signals picked up by external leads from reaching the circuits. Such interference may arise, for example, when the apparatus passes through an area in which a high electric field gradient exists, e.g. when a vehicle carrying the equipment passes near to a high power radio transmitter or other source of high power oscillatory or switched currents.
  • the filters are incorporated in connectors provided in the wall of the enclosure to allow electrical connections to be made between the circuits within the enclosure and external equipment.
  • a filter is incorporated in each individual pin or socket element of a plug or socket connector mounted on the enclosure wall and adapted to mate with a complementary connector.
  • an electric apparatus comprising: an enclosure housing electronic circuits; connector means mounted on an external wall of the enclosure and adapted to mate with complementary connector means to establish electrical connections between said circuits and equipment external of the enclosure; and filter means mounted on an internal wall of the enclosure disposed between said circuits and said connector means, said filter means comprising an electrically conductive planar structure having a plurality of apertures extending therethrough, each said aperture housing an individual electric filter connected in a respective one of a plurality of leads extending between said connector means and said electric circuits.
  • Figure 1 is a diagrammatic perspective view of part of the apparatus, partly broken away;
  • Figure 2 is a sectional view of one of a number of filter elements incorporated in the apparatus;
  • Figure 3 is a circuit diagram of the filter element of Figure 2.
  • the apparatus comprises a rectangular enclosure 1 made of sheet metal.
  • a multi-way plug connector 5 whereby connections may be established through the enclosure wall between electronic circuits housed within the enclosure and equipment external of the enclosure.
  • each way through the connector terminates at its end outside the enclosure in a pin 7 adapted to mate with a socket of a multi-way socket connector (not shown) connected to the ends of leads from the external equipment.
  • Inside the enclosure 1 there is an internal wall 9 which forms one e'nd of a sealed compartment 11 within the enclosure which houses the electronic circuits (not shown) of the apparatus.
  • a plate 13 Over an aperture in the internal wall there is mounted a plate 13 through which extend a plurality of circular holes disposed in an array similar to the array of pins 7 in the connector 5.
  • the plate 13 is required to be electrically conductive and may thus consist of electrically conductive material or comprise an insulating material, e.g. a plasti material, provided with an electrically conductive coating
  • Each hole in the plate 13 contains an electric filter element 15, further described below, each filter element 13 having, two leads, one on each side of the plate 13.
  • the plate 13 forms a common ground connection to each filter element 15, each filter element thus comprising a four terminal network.
  • the filter leads 17 on the side of the plate 13 remote from the electronic components are adapted for connection by soldering to the ends of individual wires, or the ends of conductors of a flexible printed circuit -U-
  • the filter leads on the side of the plate 13 nearer the electronic circuits are adapted for connection by soldering to leads (not shown) to and from the electronic circuits.
  • the leads may for example be individual wire or tracks of a flexible printed circuit strip.
  • Each pin 7 of the connector 5 is thus connected to the electronic circuits in the compartment 11 via a lead including a respective one of the filter elements 15.
  • the filter elements 15 are of course designed so as to prevent interference signals picked up by leads external of the enclosure from reaching the electronic circuits in compartment 11.
  • the filter elements 15 are entirely free of the risk of being damaged when the plug 5 is coupled to and uncoupled from its associated socket. Furthermore the internal wall 9 together with the plate 13 and associated filter elements 15 may be constructed so as to provide a more satisfactory seal than the end wall 3 and connector 5, thus facilitating the provision of a clean atmosphere for the electronic circuits Moreover, since the filter elements 15 serve solely as filters and the filter elements and plate 13 do not also serve as parts of a connector, the filter elements and plat can be designed to form a compact assembly with the plate providing good electrical screening between the filter elements. A compact arrangement having improved electrica performance compared with the above mentioned prior art arrangements, particularly in respect of attenuation/ frequency characteristics of the filter elements, is thus provided. The filter elements 15 are required to be of a suitably compact form so as to fit wholly within the holes in the plate 13 . one suitable form for the filter elements being illustrated in Figures 2 and 3.
  • each element is of TT form comprising a series inductor element 11 and two shunt capacitor elements 21 and 23-
  • the inductor element 19 includes a helical metallic coating 25 formed on the curved surface of a cylindrical former 27 of ferrite material.
  • the former 27 fits within a ferrite sleeve member 29 and two cup-shaped metal ferrules 31 and 33 fit
  • Each filter element 15 is suitably mounted in the plate 13 by soldering to a tubular metal mounting plate 45 provided in each hole in the plate.
  • the coating 25 with the ferrite former 27 and sleeve 29 forms the inductor element 19 of the filter element whilst the two ferrules •, - 31 and 33 respectively form one electrode of each of the capacitors 21 and 23, the casing 37 forms the grounded
  • a solder bucket may be provided on one or both of the filter element leads 39 and 41 as illustrated at 47 in Figure 2.
  • each filter element 13 has a diameter of 5 millimetres and a length of 7 millimetres.
  • filter elements of different form may be used in other arrangements in accordance with the invention.
  • the filter elements may be of rectangular instead of circular cross- section, the holes in the plate 13 then of course being of corresponding cross-section. This can facilitate ⁇ obtaining a good seal between the filter elements and the plate 13.
  • the filter elements 15 are ofTTform
  • the filters may be of " form or comprise multiple elements of the ⁇ T ⁇ or T form.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Abstract

Dans un appareil électrique du type où des circuits électroniques sont logés dans une enceinte de blindage (1) et les conducteurs qui pénètrent dans l'enceinte afin d'établir des connexions extérieures de l'appareil comprennent chacun un élément de filtrage (15), par exemple pour former une barrière aux interférences captées par les conducteurs exérieurs, les éléments de filtrage (15) sont montés dans une paroi intérieure (9) de l'enceinte, entre les circuits et une paroi extérieure (3) qui porte un connecteur (5) qui s'accouple avec un connecteur complémentaire afin d'établir la connexion extérieure de l'appareil. En séparant les éléments de filtrage (15) du connecteur (5), on élimine les risques d'endommagement des éléments de filtrage lors de la connexion de l'appareil, et on rend plus simple la conception des éléments de filtrage.
PCT/GB1987/000399 1985-12-13 1987-06-10 Appareil electrique Ceased WO1988010026A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB8530721A GB2184293B (en) 1985-12-13 1985-12-13 Electrical apparatus
PCT/GB1987/000399 WO1988010026A1 (fr) 1987-06-10 1987-06-10 Appareil electrique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/GB1987/000399 WO1988010026A1 (fr) 1987-06-10 1987-06-10 Appareil electrique

Publications (1)

Publication Number Publication Date
WO1988010026A1 true WO1988010026A1 (fr) 1988-12-15

Family

ID=10610436

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1987/000399 Ceased WO1988010026A1 (fr) 1985-12-13 1987-06-10 Appareil electrique

Country Status (1)

Country Link
WO (1) WO1988010026A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1156340A3 (fr) * 2000-05-15 2002-09-25 T-Mobile Deutschland GmbH Chambre CEM miniaturisée et portative pour l'utilisation dans le domaine de radios mobiles

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2195118A1 (fr) * 1972-07-27 1974-03-01 Siemens Ag
DE3048170A1 (de) * 1979-12-20 1981-08-27 Murata Manufacturing Co. Ltd., Nagaokakyo, Kyoto Elektrisches filter
US4407552A (en) * 1978-05-18 1983-10-04 Matsushita Electric Industrial Co., Ltd. Connector unit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2195118A1 (fr) * 1972-07-27 1974-03-01 Siemens Ag
US4407552A (en) * 1978-05-18 1983-10-04 Matsushita Electric Industrial Co., Ltd. Connector unit
DE3048170A1 (de) * 1979-12-20 1981-08-27 Murata Manufacturing Co. Ltd., Nagaokakyo, Kyoto Elektrisches filter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1156340A3 (fr) * 2000-05-15 2002-09-25 T-Mobile Deutschland GmbH Chambre CEM miniaturisée et portative pour l'utilisation dans le domaine de radios mobiles

Similar Documents

Publication Publication Date Title
JP2928252B2 (ja) 同軸電気コネクタ組立体
US3573677A (en) Connector with provision for minimizing electromagnetic interference
US4458220A (en) Electrical connector and filter circuit
US4401355A (en) Filtered connector
US5236376A (en) Connector
KR100432361B1 (ko) 차폐기능 및 장착기능을 개선한 관통형 필터
US4781624A (en) Filter arrangements and connectors
US3435387A (en) Solderless mounting filter connection
US20020021541A1 (en) Protective device
EP0470775A1 (fr) Couplage électrique
JPH06120912A (ja) フィルタ電気コネクタ
US4260966A (en) High current filter connector with removable contact members
JPS61208902A (ja) Ｍｉｃ型誘電体フイルタ
JPH05283126A (ja) コネクタ
JPH02181380A (ja) フィルタコネクタ組立体
JPH0395880A (ja) 電気フィルタコネクタの製造法
JP2001043941A (ja) 基板に設置可能な同軸コネクタ
KR101034491B1 (ko) 방해 전자파 차폐용 컨택트 구조
US5123863A (en) Solderless housing interconnect for miniature semi-rigid coaxial cable
US20120309230A1 (en) Cable coupling connector
KR20010029520A (ko) 스위치 접점을 필요로 하지 않는 안테나 임피던스망
US20050264381A1 (en) Coaxial DC block
GB2184293A (en) Screening enclosures for electronic circuits
US4088385A (en) Shielded connectors for closely spaced terminals
EP0516522B1 (fr) Connecteur ayant des diodes polarisés de courant de blocage

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): JP US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR GB IT LU NL SE