WO1997022234A2 - Boîtier a effet de blindage pour appareils radio - Google Patents

Boîtier a effet de blindage pour appareils radio Download PDF

Info

Publication number
WO1997022234A2
WO1997022234A2 PCT/DE1996/002415 DE9602415W WO9722234A2 WO 1997022234 A2 WO1997022234 A2 WO 1997022234A2 DE 9602415 W DE9602415 W DE 9602415W WO 9722234 A2 WO9722234 A2 WO 9722234A2
Authority
WO
WIPO (PCT)
Prior art keywords
housing
plastic deep
drawn
contact area
housing part
Prior art date
Application number
PCT/DE1996/002415
Other languages
German (de)
English (en)
Other versions
WO1997022234A3 (fr
Inventor
Edgar Jochheim
Original Assignee
Siemens Aktiengesellschaft
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 claimed from DE19651545A external-priority patent/DE19651545A1/de
Application filed by Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO1997022234A2 publication Critical patent/WO1997022234A2/fr
Publication of WO1997022234A3 publication Critical patent/WO1997022234A3/fr

Links

Classifications

    • 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
    • H05K9/0045—Casings being rigid plastic containers having a coating of shielding material
    • 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
    • H05K9/0073—Shielding materials
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving

Definitions

  • the present invention relates to a housing part
  • Screen function for a radio device made of shell-shaped housing parts arranged with their open sides facing one another to accommodate the devices of the radio device, the screen function being carried out by a separate metalized thermoformed part, the outer contours of which are adapted to the inner contours of the actual housing part , and wherein the thickness of the metal layer applied on the inside of the plastic deep-drawn part is designed in accordance with the shielding requirements.
  • Such shatterproof housing parts are such. B. from DE-43 22 753 AI known.
  • radio equipment e.g. B. mobile telephones or cordless telephones, is one for protecting the high-frequency and low-frequency logic modules against interference radiation and interference emission of electromagnetic radiation
  • the invention is based on the object of specifying a simple-to-produce electromagnetic seal between housing parts which are safe from stray radiation.
  • the plastic deep-drawn part has a sealing device in the contact area which forms an integral part with the remaining plastic deep-drawn part.
  • An expedient embodiment of the housing part according to the invention is characterized in that the contact area of the plastic deep-drawn part has a wavy rib structure.
  • the required contact pressure is provided by the wavy rib structure.
  • Another expedient embodiment of the housing part according to the invention is characterized in that the contact area of the plastic deep-drawn part consists of punched and bent spring tabs.
  • This integrated sealing device is simple to manufacture and provides the required contact pressure due to the spring action of the spring tabs.
  • FIG. 1 shows a longitudinal section through a radio device in which the housing part according to the invention is used
  • FIG. 2 shows a cross section through the radio of FIG. 1 between the buttons of the radio
  • the radio device 1 has a display 2 and a keypad 3 on its upper side.
  • An antenna 4 is attached to the upper end face.
  • the housing of the radio consists of an upper shell 5 and a lower shell 6, which are arranged one on top of the other with their open sides facing one another.
  • the upper shell 5 has openings for the display 2 and the keypad 3.
  • a circuit board 7 for receiving high-frequency components and logic modules of the radio is arranged between the half-shells 5 and 6 lying one on top of the other.
  • a metallized plastic deep-drawn part 8 with a metal layer 9 provided on its inside is inside the lower shell 6 .
  • the thickness of the metal layer to be applied depends on the shielding requirements. In the case of the housing part according to the invention, it is therefore possible to achieve a very specific, predetermined shielding effect without a great deal of production technology.
  • plastic deep-drawn part 8 is back-injected during the actual device part manufacturing process during the injection molding process.
  • the actual plastic deep-drawn part 8 consists of a very thin (0.1 mm) film, which results in an elastic and this results in assembly behavior conforming to the house during an insertion process.
  • 3 to 6 show detailed representations of details in the contact area of the printed circuit board 7 and housing part 6 with the metallic plastic deep-drawn part 8.
  • the plastic deep-drawn part 8 with its metal coating 9 is up to the top of the lower shell 6 guided to form a contact to the ground surfaces of the circuit board 7 at this point.
  • the inside of the lower shell 6 is stepped in the upper area, the plastic deep-drawn part 8 covering the step.
  • the circuit board 7 lies with its underside on the step and thus on the metal layer 9 of the plastic deep-drawn part 8.
  • the contact area of the plastic deep-drawn part 8 is provided with a wavy rib structure according to the invention. This is shown schematically in cross section in FIG. 5.
  • the required contact pressure is provided by the wave-shaped rib structure, and thus an electromagnetic seal between the housing textile and another housing part or a printed circuit board is achieved.
  • a further possibility according to the invention to create an integrated seal consists in that the contact area of the plastic deep-drawn part consists of punched and bent spring tabs.
  • This solution according to the invention is shown schematically in FIG. 6 m in a top view.
  • the spring action of the spring tab is shown required contact pressure is provided and thus a complete electromagnetic seal is achieved in the contact area.
  • the individual spring tabs for example, can alternately be bent downwards and upwards

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Casings For Electric Apparatus (AREA)
  • Structure Of Receivers (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)

Abstract

L'invention concerne un boîtier à effet de blindage pour appareils radio, constitué de parties en forme de coque dont les côtés ouverts se font face et qui contiennent l'appareil radio. L'effet de blindage est assuré par une partie plastique métallisée emboutie profond (8) dotée d'un dispositif d'étanchéité intégré.
PCT/DE1996/002415 1995-12-15 1996-12-16 Boîtier a effet de blindage pour appareils radio WO1997022234A2 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19546994 1995-12-15
DE19546994.1 1995-12-15
DE19651545.9 1996-12-11
DE19651545A DE19651545A1 (de) 1995-12-15 1996-12-11 Gehäuseteil mit Schirmfunktion für Funkgeräte

Publications (2)

Publication Number Publication Date
WO1997022234A2 true WO1997022234A2 (fr) 1997-06-19
WO1997022234A3 WO1997022234A3 (fr) 1997-08-14

Family

ID=26021311

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1996/002415 WO1997022234A2 (fr) 1995-12-15 1996-12-16 Boîtier a effet de blindage pour appareils radio

Country Status (1)

Country Link
WO (1) WO1997022234A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6013376A (en) * 1997-12-09 2000-01-11 3M Innovative Properties Company Metal fibermat/polymer composite

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8604884U1 (de) * 1986-02-22 1986-05-22 Valentin, Michael, 3544 Waldeck Hochfrequenzdichtes Gehäuse für elektrotechnische Zwecke, insbesondere für einen Hausübergabepunkt
US5150282A (en) * 1990-12-14 1992-09-22 Fujitsu Limited Electromagnetic shielding structure of high-frequency circuit arrangements
GB2260226A (en) * 1991-10-02 1993-04-07 Murata Manufacturing Co Surface mountable electronic shield case and substrate
EP0633585A1 (fr) * 1993-07-08 1995-01-11 Philips Patentverwaltung GmbH Boîtier pour appareils de télécommunication électrique
DE4322753A1 (de) * 1993-07-08 1995-01-12 Philips Patentverwaltung Gehäuse für Geräte der elektrischen Nachrichtentechnik
EP0727932A2 (fr) * 1994-11-28 1996-08-21 Kabushiki Kaisha Toshiba Boîtier avec blindage électromagnétique

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8604884U1 (de) * 1986-02-22 1986-05-22 Valentin, Michael, 3544 Waldeck Hochfrequenzdichtes Gehäuse für elektrotechnische Zwecke, insbesondere für einen Hausübergabepunkt
US5150282A (en) * 1990-12-14 1992-09-22 Fujitsu Limited Electromagnetic shielding structure of high-frequency circuit arrangements
GB2260226A (en) * 1991-10-02 1993-04-07 Murata Manufacturing Co Surface mountable electronic shield case and substrate
EP0633585A1 (fr) * 1993-07-08 1995-01-11 Philips Patentverwaltung GmbH Boîtier pour appareils de télécommunication électrique
DE4322753A1 (de) * 1993-07-08 1995-01-12 Philips Patentverwaltung Gehäuse für Geräte der elektrischen Nachrichtentechnik
EP0727932A2 (fr) * 1994-11-28 1996-08-21 Kabushiki Kaisha Toshiba Boîtier avec blindage électromagnétique

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6013376A (en) * 1997-12-09 2000-01-11 3M Innovative Properties Company Metal fibermat/polymer composite

Also Published As

Publication number Publication date
WO1997022234A3 (fr) 1997-08-14

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