[go: up one dir, main page]

WO1998044773A1 - Appareil servant a contenir un bloc d'alimentation servant a reduire des emissions hf - Google Patents

Appareil servant a contenir un bloc d'alimentation servant a reduire des emissions hf Download PDF

Info

Publication number
WO1998044773A1
WO1998044773A1 PCT/US1998/005888 US9805888W WO9844773A1 WO 1998044773 A1 WO1998044773 A1 WO 1998044773A1 US 9805888 W US9805888 W US 9805888W WO 9844773 A1 WO9844773 A1 WO 9844773A1
Authority
WO
WIPO (PCT)
Prior art keywords
compartment
power supply
cover
accordance
piece construction
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/US1998/005888
Other languages
English (en)
Other versions
WO1998044773B1 (fr
Inventor
Andrew F. Mccann
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.)
Scientific Atlanta LLC
Original Assignee
Scientific Atlanta LLC
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 Scientific Atlanta LLC filed Critical Scientific Atlanta LLC
Publication of WO1998044773A1 publication Critical patent/WO1998044773A1/fr
Publication of WO1998044773B1 publication Critical patent/WO1998044773B1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • H05K9/002—Casings with localised screening
    • H05K9/0022—Casings with localised screening of components mounted on printed circuit boards [PCB]
    • H05K9/0024—Shield cases mounted on a PCB, e.g. cans or caps or conformal shields
    • H05K9/0026—Shield cases mounted on a PCB, e.g. cans or caps or conformal shields integrally formed from metal sheet
    • H05K9/0028—Shield cases mounted on a PCB, e.g. cans or caps or conformal shields integrally formed from metal sheet with retainers or specific soldering features
    • 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
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
    • H05K7/209—Heat transfer by conduction from internal heat source to heat radiating structure
    • 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
    • H05K9/002—Casings with localised screening
    • H05K9/0022—Casings with localised screening of components mounted on printed circuit boards [PCB]
    • H05K9/0037—Housings with compartments containing a PCB, e.g. partitioning walls

Definitions

  • the present invention is directed to radio frequency (RF) component housings
  • Radio frequency (RF) components are generally contained within housings
  • Housings for RF components generally comprise a base and a lid to enclose the
  • One common component contained in such housings is an RF amplifier which
  • Power supplies are typically contained within a
  • housings having separate enclosures for the power supplies exhibit less than desirable
  • Covers for such housings also exhibit RF energy losses due to a lack of adequate
  • Salvi, Jr. has a plurality of compartments formed within the housing cover.
  • the cover of Chase et al. has a plurality of tabs extending from its edges and
  • the housing has a
  • the tab with the slot is either a linear contact surface or a ring contact surface and not
  • lid for a housing containing a power supply comprising a compartment formed of one
  • a mounting means is formed in the compartment to
  • Each flange has a dome-shaped projection extending
  • mounting means to secure the power supply therein, mounting the power supply to the
  • planar member and a plurality of flanges extending generally perpendicular to the surface
  • the flanges having a projection extending from a surface
  • the lid having a
  • compartment formed therein and of one-piece construction with the lid provides increased thermal conductivity for power supply switching transistors mounted to the lid
  • the cover having a plurality of flanges
  • each having a dome-shaped projection extending from an outer surface thereof provides
  • Fig.l is a schematic perspective view of the lid of the present invention having a
  • Fig. 2 is a schematic perspective view of the cover for the power supply
  • Fig. 3 is a schematic elevation view of the cover of Fig. 2 showing the flanges
  • Fig. 4 is a schematic perspective view of a housing base of the present invention
  • references used here are based on the orientation of components and assemblies shown in
  • the lid is depicted in Fig. 1 in an inverted manner such that
  • exterior of the walls of the lid and inwardly refers to a direction generally away from the
  • RF components such as RF amplifiers are typically contained within housings
  • Housing lid 2 comprising top 4 and pairs of opposed
  • FIG. 1 A skirt 14 is formed at lower edges of
  • Base 57 comprises bottom 59, end walls 61, 63 and side walls
  • Skirt 69 is formed along upper edges of the walls to mate with skirt 14 of lid 2.
  • a printed circuit board 70 is mounted within base 57.
  • Printed circuit board 70 in a preferred embodiment employs conventional amplifying circuitry in order to amplify a
  • Such amplifying circuits are well known and
  • a fastening means comprising hinge
  • skirt 14 for rotatably and
  • lid 2 engage mating hinge members 71 on the base 57 allowing lid 2 to be easily opened and
  • power supply compartment 20 is formed in and is of
  • Compartment 20 comprises compartment side wall 22
  • compartment side wall 22 being opposed to side wall 8 of
  • lid 2 and compartment end wall 24 being opposed to end wall 12 of lid 2.
  • compartment 20 has a generally rectangular shape.
  • Mounts 25 are formed within
  • compartment 20 extend from top 4 and are of one-piece construction with lid 2.
  • printed circuit board 21 of the power supply is secured within compartment 20 via
  • a mount 25 is formed in each corner of the compartment 20 and one mount 25
  • Mounting means such as a mounting
  • block 26 is also formed within compartment 20, extends from top 4, and is of one-piece
  • mounting block 26 is proximate the mount 25 located
  • a power supply switching transistor 17 extends through gap 29 formed in printed circuit board 21 and is secured to mounting block 26 via a fastener,
  • mounting block 26 is of one-piece construction with lid 2, the switching transistor 17 is
  • Compartment 20 being of
  • Cover 30 comprises substantially planar member 32, as seen in Fig. 2, and is
  • Mounting members are provided on planar
  • Tabs 34 mate with corresponding recesses 38 formed in end wall 12 and mounting
  • fasteners such as screws, which extend through apertures 36 and engage apertures 42
  • planar member 32 extend upwardly from outer edges of planar member 32 in a direction generally
  • Dome-shaped projections 48 extend outwardly from the surface of each
  • flanges 46 extend upwardly into and within compartment 20. Flanges 46 are resilient members which exert a spring-like action outwardly toward the side and end
  • flanges 46 are of one-piece construction with planar member 32.
  • Projections 48 contact side wall 8, compartment side wall 22, end wall 12, and
  • compartment end wall 24 providing a positive point to point electrical contact with lid 2
  • each flange 46 thereby accounts for any irregularities in the walls and maintains the
  • Gap 50 is formed along one edge of cover 30 by
  • Gap 50 provides a passage for a power cable which connects
  • the power cable also passing
  • a plurality of fins 53 are provided on the interior of the
  • lid 2 to improve heat absorption from components in the housing while the exterior of
  • the lid is provided with a plurality of fins 55 to aid in dissipation of heat from the lid 2.
  • cover is comprised of steel.
  • particular components may be formed of beryllium copper or other suitable materials which exhibit suitable thermal
  • the flanges are resilient and provide a spring-like

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)

Abstract

L'invention concerne un appareil servant de logement pour un bloc d'alimentation, qui comporte un élément supérieur (4) et des paires d'extrémités opposées et de parois latérales (10, 12, 6, 8). Un compartiment (20) formé à l'intérieur de l'appareil est construit en une seule pièce avec l'élément supérieur. Un dispositif de montage (25) est formé dans le compartiment, auquel un transistor de commutation de bloc d'alimentation peut être fixé. Un couvercle de compartiment comporte un élément sensiblement plane et plusieurs rebords s'étendant vers l'extérieur à partir de l'élément plane, le long de ses bords. Chaque rebord présente une saillie en forme de dôme s'étendant vers l'extérieur à partir de la surface du rebord, qui présente des points de contact électriques positifs ponctuels avec les parois du compartiment lorsque le couvercle est fixé sur l'élément supérieur.
PCT/US1998/005888 1997-03-31 1998-03-26 Appareil servant a contenir un bloc d'alimentation servant a reduire des emissions hf Ceased WO1998044773A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US82847597A 1997-03-31 1997-03-31
US08/828,475 1997-03-31

Publications (2)

Publication Number Publication Date
WO1998044773A1 true WO1998044773A1 (fr) 1998-10-08
WO1998044773B1 WO1998044773B1 (fr) 1998-12-10

Family

ID=25251915

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1998/005888 Ceased WO1998044773A1 (fr) 1997-03-31 1998-03-26 Appareil servant a contenir un bloc d'alimentation servant a reduire des emissions hf

Country Status (1)

Country Link
WO (1) WO1998044773A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1420329A1 (fr) * 2002-11-15 2004-05-19 Kabushiki Kaisha Toshiba Appareil électronique ayant un couvercle fermant un réceptacle pour mémoire
CN104020800A (zh) * 2014-05-30 2014-09-03 浙江理工大学 一种染色在线反馈控制系统及其方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3909726A (en) * 1973-09-26 1975-09-30 Zenith Radio Corp UHF Hybrid tuner
US5121296A (en) * 1991-06-10 1992-06-09 Kai Hsu Computer housing assembly which can be assembled and disassembled without tools
US5353202A (en) * 1990-07-20 1994-10-04 International Business Machines Corp. Personal computer with shielding of input/output signals

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3909726A (en) * 1973-09-26 1975-09-30 Zenith Radio Corp UHF Hybrid tuner
US5353202A (en) * 1990-07-20 1994-10-04 International Business Machines Corp. Personal computer with shielding of input/output signals
US5121296A (en) * 1991-06-10 1992-06-09 Kai Hsu Computer housing assembly which can be assembled and disassembled without tools

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1420329A1 (fr) * 2002-11-15 2004-05-19 Kabushiki Kaisha Toshiba Appareil électronique ayant un couvercle fermant un réceptacle pour mémoire
CN104020800A (zh) * 2014-05-30 2014-09-03 浙江理工大学 一种染色在线反馈控制系统及其方法

Similar Documents

Publication Publication Date Title
US6577504B1 (en) Integrated heat sink for different size components with EMI suppression features
US5053924A (en) Electromagnetic shield for electrical circuit
EP1130953B1 (fr) Plaque et structure de blindage contre les champs electromagnetiques, et dispositif recreatif
US6081425A (en) Miniaturizing power supply system for portable computers by improving heat dissipation therein
US7170014B1 (en) Electromagnetic interference shield apparatus
US4587593A (en) Integrally cast mobile radio housing
JPH0526936Y2 (fr)
US4622621A (en) Chip carrier for high frequency power components cooled by water circulation
US11470750B2 (en) Electrical or electronic device comprising a housing with two regions shielded electromagnetically from each other
US20050018411A1 (en) Shield casing with heat sink for electric circuits
US3303392A (en) Cooling arrangement for electronic devices
JPS62293699A (ja) 電子機器筐体
WO1998044773A1 (fr) Appareil servant a contenir un bloc d'alimentation servant a reduire des emissions hf
JPH0537519Y2 (fr)
JP3031230B2 (ja) 電気接続箱の放熱構造
JPH02138797A (ja) 電子機器
JP2517496Y2 (ja) 電気機器
US7515421B2 (en) Electronic device comprising secure heat dissipation
JP7108943B2 (ja) 電気設備
JP7018592B2 (ja) 電気設備
GB2212331A (en) An audio amplifier
JPH08222881A (ja) プリント基板の実装方法
JPH03250697A (ja) 電源冷却モジュール
JPH0510397Y2 (fr)
JPS6144443Y2 (fr)

Legal Events

Date Code Title Description
AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
CFP Corrected version of a pamphlet front page
CR1 Correction of entry in section i

Free format text: PAT. BUL. 40/98 UNDER (22) REPLACE "28.03.98" BY "26.03.98"

121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase