WO2005055686A2 - Electronic apparatus and enclosure employing substantially co-planar portions with mating crenellations - Google Patents
Electronic apparatus and enclosure employing substantially co-planar portions with mating crenellations Download PDFInfo
- Publication number
- WO2005055686A2 WO2005055686A2 PCT/IB2004/003963 IB2004003963W WO2005055686A2 WO 2005055686 A2 WO2005055686 A2 WO 2005055686A2 IB 2004003963 W IB2004003963 W IB 2004003963W WO 2005055686 A2 WO2005055686 A2 WO 2005055686A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- enclosure
- mating
- electronic apparatus
- crenellations
- interface joint
- Prior art date
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
- H05K9/0073—Shielding materials
Definitions
- the invention relates to enclosures for electronic apparatus and, more particularly, to such enclosures that reduce electromagnetic interference emissions to and/or from the enclosures.
- the invention also relates to electronic apparatus employing enclosures that reduce electromagnetic interference emissions thereto and/or therefrom.
- EMI electromagnetic interference
- Digital and/or processor-based electronic devices produce electromagnetic fields at harmonics of the clock frequency and also at frequencies related to the rise and fall times of logic signals.
- the most straightforward controls for EMI involve the use of multi-layer printed circuit boards and ground planes.
- the last line of defense is the electronic enclosure.
- the typical electronic enclosure is made of conductive materials, such as aluminum or steel. Even then, any openings or seams may act as slot antennas. These slots pass EMI at frequencies having wavelengths less than eight times the size of the slot.
- shielding having the capability of absorbing and/or reflecting EMI energy may be employed both to confine the EMI energy within a source device, and to insulate that device or other "target" devices from other source devices.
- Such shielding is provided as a barrier, which is inserted between the source and the other devices, and typically is configured as an electrically conductive and grounded housing to enclose the device.
- housings are provided with openable or removable accesses, such as doors, hatches, panels or covers.
- accesses such as doors, hatches, panels or covers.
- gaps may be present between even the flattest of these accesses and its corresponding mating or faying surface, however, there may be present gaps, which reduce the efficiency of the shielding by presenting openings through which radiant energy may leak or otherwise pass into or out of the device.
- gaps represent discontinuities in the surface and ground conductivity of the housing or other shielding, and may even generate a secondary source of EMI radiation by functioning as a form of slot antenna.
- bulk or surface currents induced within the housing develop voltage gradients across any interface gaps in the shielding, which gaps thereby function as antennas and radiate EMI noise.
- EMI shielding products attempt to prevent undesired electromagnetic energy and radio frequency interference (RFI) from disrupting, or radiating from, electronic devices.
- RFID radio frequency interference
- Such products include, for example, wire mesh O- rings; fabric-over-foam profile gaskets; shielding tapes; fabric-over-foam I/O gaskets; cable shielding; EMI shielding glass; shielding laminates; selectively coated, custom formable shields; beryllium copper spring-finger gasketing; and silver coated nylon gasketing. Nevertheless, such products are expensive.
- PC personal computer
- the typical PC case includes steel plates and shields; nevertheless, there are emissions through the seams and through openings created for add-on cards.
- electromagnetic gasket material attempts to attenuate non-complaint signals at the seams and the openings. The more overlap provided by the gasket material at a seam or opening, the better the attenuation.
- the cost of the gasket material and related assembly is relatively expensive.
- the wavelengths of signals are relatively very short.
- such microwave ovens employ electromagnetic gaskets for relatively long seams and an array of relatively small holes in a conductive panel for the window.
- EMI shielding gaskets For filling gaps within mating surfaces of housings and other EMI shielding structures, gaskets and other seals have been proposed for maintaining electrical continuity across the structure. Such seals are bonded or mechanically attached to, or press-fit into, one of the mating surfaces, and close any interface gaps, in order to establish a continuous electrically conductive path thereacross by conforming under an applied pressure to irregularities between the surfaces.
- EMI shielding gaskets for example, are used in electronic equipment to provide protection against interference from electromagnetic energy, including RFI and more broadly all bands of EMI.
- the shielding has an electrically conductive element, be it a wire mesh, conductive filler or conductive plating, coating or fabric, which prevents external EMI from interfering with an electronic device and/or protects other adjacent electronic devices from EMI emitted by an electronic device.
- an electrically conductive element be it a wire mesh, conductive filler or conductive plating, coating or fabric, which prevents external EMI from interfering with an electronic device and/or protects other adjacent electronic devices from EMI emitted by an electronic device.
- FIP form-in-place
- Gaskets of such type may be formed by molding or the FIP process as having a crenellated, i.e., notched, serrated or a sinusoidal "waveform" profile, or as a series of discrete beads.
- a gasket having such an "interrupted" profile or pattern would be expected to exhibit a greater deflection under a given compressive load than a continuous profile.
- U.S. Patent No. 5,259,792 discloses an electrical connector housing for a flat ribbon-type electrical transmission cable and method for minimizing EMI emissions.
- the connector housing has a top half and a bottom half, which are fitted together with an interlock joint, in order to minimize the emission of EMI through the joint.
- the interlock is provided by a number of interrupt elements that provide discontinuity along the otherwise continuous line joint to minimize the emissions of interference signals.
- the interlock along the interface between the top and bottom connector housing halves is provided by serrations in the form of triangular teeth that fit together.
- the teeth interlock in order that there is insufficient space to allow for the transmission of EMI at frequencies at least up to six gigahertz.
- the interrupt may be provided in the form of other elements as long as there is no space having a linear dimension greater than 1/8 of the EMI wavelength.
- the plastic housing halves are plated with a metal plating shield, such as a copper-nickel alloy, to provide shielding.
- RFI shielding strips are affixed to each housing half, in order that when the housing halves are clamped together the shielding strips will make positive electrical contact with a cable foil metal shield.
- Military contractors have used many techniques to attenuate and deflect radar signals.
- the goal of stealth technology is to make an aircraft invisible to radar.
- the stealth aircraft is shaped, in order that any incident radar signals are reflected away from the radar source and/or the aircraft is covered in materials that absorb radar signals.
- the stealth aircraft may be made up of completely flat surfaces and relatively very sharp edges. When a radar signal hits a stealth aircraft, the signal reflects away at an angle.
- first and second enclosure portions to form an interface joint.
- the first and second enclosure portions are at least substantially co-planar proximate the interface joint and include a plurality of mating crenellations. This limits the size of enclosure slots at the interface joint in any particular direction.
- an electronic apparatus comprises: an enclosure including a first enclosure portion and a second enclosure portion; and electronic circuitry within the enclosure, the second enclosure portion mating with the first enclosure portion and forming an interface joint, the first and second enclosure portions being at least substantially co-planar proximate the interface joint and including a plurality of mating crenellations, in order to reduce electromagnetic interference radiation to or from the enclosure when the first and second enclosure portions are mated together.
- the mating crenellations may be a series of mating serrations extending along the interface joint.
- the first and second enclosure portions may include co-planar mating portions, which forni the interface joint.
- the mating crenellations may be a series of mating serrated teeth extending along the interface joint.
- the first enclosure portion may be a housing including an opening and an edge with a first set of the mating crenellations defining the opening.
- the second enclosure portion may be a plate having a periphery with a second set of the mating crenellations within the opening.
- the first and second sets of the mating crenellations may mate and define the interface joint.
- an electronic apparatus enclosure comprises: a first enclosure portion adapted to house electronic circuitry therein; and a second enclosure portion mating with the first enclosure portion and forming an interface joint, the first and second enclosure portions being at least substantially co- planar proximate the interface joint and including a plurality of mating crenellations, in order to reduce electromagnetic interference radiation to or from the enclosure when the first and second enclosure portions are mated together.
- the first enclosure portion may be a housing including an opening and an edge with a first set of the mating crenellations at the opening.
- the second enclosure portion may be a plate having a periphery with a second set of the mating crenellations within the opening.
- the first and second sets of the mating crenellations may be co-planar and mate to define the interface joint.
- Figure 3 is a plan view of two mating enclosure portions employing crenellations as an interface joint in accordance with another embodiment of the invention.
- Figure 4 is a plan view of two mating enclosure portions employing embrasures as an interface joint in accordance with another embodiment of the invention.
- DESCRIPTION OF THE PREFERRED EMBODIMENTS Figure 1 shows an electronic device 2 including a housing 4 and electronic circuitry 6 (shown in hidden line drawing) therein.
- the housing 4 includes a generally five-sided enclosure 8 and two front plates 10,12 having a plurality of connectors 14,16, respectively.
- the front plates 10,12 mate with the enclosure 8 at two openings 18,20, respectively, thereof.
- an electronic apparatus 50 includes an enclosure 52 having a first enclosure portion 54 and two second enclosure portions 56,57, and electronic circuitry 58 (e.g., meter circuitry) (shown in hidden line drawing) within the enclosure 52.
- the second enclosure portions 56,57 mate with the first enclosure portion 54 and form two interface joints 59,60, respectively.
- the first and second enclosure portions 54,56,57 are at least substantially co-planar proximate the interface joints 59,60 and include a plurality of mating crenellations 62,63 (as shown with the portion 56), in order to reduce electromagnetic interference radiation to or from the enclosure 52 when the first and second enclosure portions 54,56,57 are mated together.
- the mating crenellations 62,63 are a series of mating serrations 64,65 (e.g., mating serrated teeth) extending along the interface joints 59,60.
- the first and second enclosure portions 54,56,57 include co-planar mating portions 66,67,68, which form the interface joints 59,60.
- the interface joints 59,60 employ a series of the mating serrations 64,65. In this manner, only EMI at frequencies having wavelengths less than eight times the size of each of the mating serrations 64,65 can pass therethrough without being filtered. Examples of the meter circuitry 58 are disclosed, for example, in U.S.
- the invention is applicable to any suitable electronic circuitry within the enclosure 52.
- the first enclosure portion 54 is a generally five-sided housing including two openings 70,72 having edges 74,76 with the mating crenellations 62.
- the second enclosure portions 56,57 are front plates having peripheries 78,80 with the mating crenellations 63 within the openings 70,72.
- the mating crenellations 62,63 of the co-planar mating portions 66,67,68 are co-planar and mate to define the interface joints 59,60.
- two openings 70,72, two front plates 56,57 and two interface joints 59,60 are shown, the invention is applicable to enclosures including a single interface joint having one or more longitudinal edges with mating crenellations.
- front plates 56,57 are shown, the invention is applicable to one or more interface joints disposed on any side(s) of an enclosure.
- One or more connectors are operatively associated with the meter circuitry 58 on one or both of the front plates 56,57.
- the meter circuitry 58 may include one or more printed circuit boards (not shown) electrically and mechanically interfacing the connectors. Examples of such connectors include an input connector 82, an output connector 84, an input/output connector 86, an RS-485 connector 88, a serial port connector 90, an Ethernet connector 92, a telephone connector 94, a power supply connector 96, a terminal block 98 and a USB port connector 100.
- Any inputs and/or outputs e.g., connections 82,84,86,88,90,92,94,96,98,100
- if employed preferably include shielded cables and shielded connectors, especially if the corresponding inputs and/or outputs do not have a suitably high impedance.
- the electromagnetic interference radiation 101 internal to the enclosure 52 and the electromagnetic interference radiation 102 external to the enclosure 52 have frequencies and corresponding wavelengths.
- the mating crenellations 62,63 define miniature slots along the interface joints 59,60. The length of those slots is less than a predetermined fraction (e.g., 1/8) of the wavelength.
- ⁇ c/f
- ⁇ wavelength
- f frequency
- the slot length is desired to be less than 1/8 of the wavelength of a selected frequency, such as 6 GHz
- the maximum slot length i.e., the maximum length of any of the individual serrated edges of the interface joints 59,60
- the length of the slots is 1/8 of a selected wavelength (e.g., ⁇ )
- relatively smaller wavelengths i.e., ⁇
- wavelengths i.e., >2 ⁇
- intermediate wavelengths i.e., between ⁇ and 2 ⁇
- serrated edges of the interface joints 59,60 are shown in Figure 2, a wide range of other suitable crenellated edges may be employed.
- the interface joints may employ notches ( Figure 3) or embrasures ( Figure 4).
- Such crenellated edges may be formed by any suitable process, such as, for example, stamping or routing.
- two mating enclosure portions 103,104 form, in the manner of a battlement, an interface joint 105 including alternating openings, such as notched recesses or embrasures 106, and raised sections, such as notched projections or merlons 108, extending along that interface joint.
- These mating crenellations form an irregular square wave pattern.
- embrasures 106 and merlons 108 may be irregular or regular (e.g., a notched or square wave pattern having, for example, a 50% or other suitable duty cycle).
- the mating enclosure portions 103,104 are preferably co- planar.
- two mating enclosure portions 1 10,112 employ mating embrasures 114,116 to define an interface joint 118.
- the electronic equipment enclosure 52 of Figure 2 employs an improved structure, which replaces a conventional slotted opening with an interface joint, such as 59 or 60, having a plurality of mating crenellations 62,63, in order to reduce emissions of interference radiation 101,102 to or from the enclosure 52.
- These mating crenellations 62,63 directly limit the size of the enclosure slots in any particular direction.
- the disclosed mating crenellations 62,63, 106,108, 114,116 and 124,126 minimize emissions of electromagnetic interference radiation to or from an enclosure, such as 52.
- electronic device housing electronic circuitry generally five-sided enclosure front plate front plate connectors connectors opening opening slotted joint slotted joint slotted joint slotted joint slotted joint slotted joint slotted joint slotted joint slotted joint front surface front surface fasteners electronic apparatus enclosure first enclosure portion second enclosure portion second enclosure portion electronic circuitry interface joint interface joint mating crenellations mating crenellations mating serrations mating serrations co-planar mating portion co-planar mating portion opening opening edge edge periphery periphery input connector output connector input/output connector RS-485 connector REFERENCE CHARACTER LIST electronic device housing electronic circuitry generally five-sided enclosure front plate front plate connectors connectors opening opening slotted joint slotted joint slotted joint slotted joint slotted joint slotted joint slotted joint slotted joint slotted joint front surface front surface fasteners electronic apparatus enclosure first enclosure portion second enclosure portion second enclosure portion electronic circuitry interface joint interface joint mating crenellations mating crenellations mating serrations mating serrations co-planar mating portion co-planar mating portion co-plan
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04801296A EP1690440B1 (en) | 2003-12-04 | 2004-12-02 | Electronic apparatus and enclosure employing substantially co-planar portions with mating crenellations |
CA002548215A CA2548215A1 (en) | 2003-12-04 | 2004-12-02 | Electronic apparatus and enclosure employing substantially co-planar portions with mating crenellations |
DE602004017639T DE602004017639D1 (en) | 2003-12-04 | 2004-12-02 | ELECTRONIC DEVICE AND HOUSING WITH ESSENTIALLY COPLANAR PARTS WITH APPROPRIATE KRENELLATIONS |
MXPA06006404A MXPA06006404A (en) | 2003-12-04 | 2004-12-02 | Electronic apparatus and enclosure employing substantially co-planar portions with mating crenellations. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/727,921 US6919505B2 (en) | 2003-12-04 | 2003-12-04 | Electronic apparatus and enclosure employing substantially co-planar portions with mating crenellations |
US10/727,921 | 2003-12-04 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2005055686A2 true WO2005055686A2 (en) | 2005-06-16 |
WO2005055686A3 WO2005055686A3 (en) | 2005-08-11 |
Family
ID=34633587
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2004/003963 WO2005055686A2 (en) | 2003-12-04 | 2004-12-02 | Electronic apparatus and enclosure employing substantially co-planar portions with mating crenellations |
Country Status (9)
Country | Link |
---|---|
US (1) | US6919505B2 (en) |
EP (1) | EP1690440B1 (en) |
CN (1) | CN100544570C (en) |
CA (1) | CA2548215A1 (en) |
DE (1) | DE602004017639D1 (en) |
ES (1) | ES2314473T3 (en) |
MX (1) | MXPA06006404A (en) |
WO (1) | WO2005055686A2 (en) |
ZA (1) | ZA200605484B (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7511230B2 (en) * | 2004-11-09 | 2009-03-31 | Stealthdrive, Inc. | Reduced cost and gasketting “one-hit” and other manufacturing EMI-shielding solutions for computer enclosures |
US8926550B2 (en) | 2006-08-31 | 2015-01-06 | Fresenius Medical Care Holdings, Inc. | Data communication system for peritoneal dialysis machine |
US20080212266A1 (en) * | 2007-01-11 | 2008-09-04 | Dawn White | Tamperproofing apparatus and methods |
JP4996361B2 (en) * | 2007-06-15 | 2012-08-08 | 富士通コンポーネント株式会社 | Enclosure for connectors |
US8319118B2 (en) * | 2008-02-22 | 2012-11-27 | Sumitomo Electric Industries, Ltd. | Optical transceiver providing independent spaces for electrical components and for optical components |
US7910839B2 (en) * | 2008-11-26 | 2011-03-22 | Itt Manufacturing Enterprises, Inc. | Electro-conductive contact structure for enclosure sealing in housings |
CN102510692A (en) * | 2011-09-19 | 2012-06-20 | 广东天富电气集团有限公司 | High-voltage power supply unit |
US8803005B2 (en) * | 2012-04-20 | 2014-08-12 | General Electric Company | Electromagnetic interference blocking cabinet with integrated input/output panel |
DE112012006499T5 (en) | 2012-06-11 | 2015-04-23 | Hewlett-Packard Development Company, L.P. | Electrical socket |
US11888255B2 (en) | 2019-07-15 | 2024-01-30 | Panduit Corp. | Single pair ethernet connector |
CN112526532A (en) * | 2020-11-23 | 2021-03-19 | 深圳赛意法微电子有限公司 | Protection device, sensor, optical ranging lens and manufacturing method of protection device |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0603652A1 (en) * | 1992-12-21 | 1994-06-29 | Siemens Aktiengesellschaft | Plug connector, especially of SUB-D-type |
EP0627876A1 (en) * | 1993-06-01 | 1994-12-07 | Siemens Aktiengesellschaft | Manufactoring method of an electromagnetically sealed support of two metallic components and a shielded circuit board with such components |
DE19708789A1 (en) * | 1997-03-04 | 1998-09-10 | Vero Electronics Gmbh | Cover surface for electronic component housing |
EP1176860A2 (en) * | 2000-07-28 | 2002-01-30 | Murata Manufacturing Co., Ltd. | Shielded case, electronic device using shielded case, electronic apparatus using electronic device, and method for manufacturing shielded case |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US161108A (en) * | 1875-03-23 | Improvement in smoke-stack heater-pipes | ||
US4857668A (en) * | 1988-04-15 | 1989-08-15 | Schlegel Corporation | Multi-function gasket |
US5105056A (en) * | 1990-10-26 | 1992-04-14 | Schlegel Corporation | Electromagentic shielding with discontinuous adhesive |
JP2510404Y2 (en) * | 1990-11-29 | 1996-09-11 | 北川工業株式会社 | Electromagnetic shield gasket |
US5202536A (en) * | 1992-02-03 | 1993-04-13 | Schlegel Corporation | EMI shielding seal with partial conductive sheath |
US5259792A (en) * | 1992-05-26 | 1993-11-09 | Woven Electronics | Electrical connector housing and method for minimizing EMI emissions |
US5706204A (en) * | 1996-02-28 | 1998-01-06 | Eaton Corporation | Apparatus for triggering alarms and waveform capture in an electric power system |
US5661658A (en) * | 1996-02-28 | 1997-08-26 | Eaton Corporation | Electrical system monitoring apparatus with programmable custom display |
US5754440A (en) * | 1996-02-28 | 1998-05-19 | Eaton Corporation | Apparatus for harmonic analysis of waveforms in an AC electrical system |
US5890097A (en) * | 1997-03-04 | 1999-03-30 | Eaton Corporation | Apparatus for waveform disturbance monitoring for an electric power system |
US5913698A (en) * | 1997-05-01 | 1999-06-22 | Hon Hai Precision Ind. Co., Ltd. | Shielded connector |
US6348654B1 (en) * | 2000-10-12 | 2002-02-19 | Parker-Hannifin Corporation | Compound waveform gasket for low closure force EMI shielding applications |
US6613977B1 (en) * | 2001-02-01 | 2003-09-02 | Apple Computer, Inc. | Apparatus and methods to contain radio frequency energy within a housing of an electronic device |
DE60206489T2 (en) * | 2001-05-11 | 2006-07-13 | Parker-Hannifin Corp., Cleveland | Toothed seal for EMI shielding applications with low crimping forces |
JP4251452B2 (en) | 2002-03-06 | 2009-04-08 | タイコ・エレクトロニクス・コーポレイション | Ejector mechanism of transceiver module assembly |
-
2003
- 2003-12-04 US US10/727,921 patent/US6919505B2/en not_active Expired - Fee Related
-
2004
- 2004-12-02 MX MXPA06006404A patent/MXPA06006404A/en active IP Right Grant
- 2004-12-02 CA CA002548215A patent/CA2548215A1/en not_active Abandoned
- 2004-12-02 EP EP04801296A patent/EP1690440B1/en not_active Expired - Fee Related
- 2004-12-02 WO PCT/IB2004/003963 patent/WO2005055686A2/en active Search and Examination
- 2004-12-02 ES ES04801296T patent/ES2314473T3/en active Active
- 2004-12-02 CN CNB2004800397097A patent/CN100544570C/en not_active Expired - Fee Related
- 2004-12-02 DE DE602004017639T patent/DE602004017639D1/en active Active
-
2006
- 2006-07-03 ZA ZA200605484A patent/ZA200605484B/en unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0603652A1 (en) * | 1992-12-21 | 1994-06-29 | Siemens Aktiengesellschaft | Plug connector, especially of SUB-D-type |
EP0627876A1 (en) * | 1993-06-01 | 1994-12-07 | Siemens Aktiengesellschaft | Manufactoring method of an electromagnetically sealed support of two metallic components and a shielded circuit board with such components |
DE19708789A1 (en) * | 1997-03-04 | 1998-09-10 | Vero Electronics Gmbh | Cover surface for electronic component housing |
EP1176860A2 (en) * | 2000-07-28 | 2002-01-30 | Murata Manufacturing Co., Ltd. | Shielded case, electronic device using shielded case, electronic apparatus using electronic device, and method for manufacturing shielded case |
Also Published As
Publication number | Publication date |
---|---|
US6919505B2 (en) | 2005-07-19 |
EP1690440B1 (en) | 2008-11-05 |
CN100544570C (en) | 2009-09-23 |
ES2314473T3 (en) | 2009-03-16 |
CA2548215A1 (en) | 2005-06-16 |
US20050121216A1 (en) | 2005-06-09 |
EP1690440A2 (en) | 2006-08-16 |
DE602004017639D1 (en) | 2008-12-18 |
WO2005055686A3 (en) | 2005-08-11 |
CN1902993A (en) | 2007-01-24 |
MXPA06006404A (en) | 2006-08-23 |
ZA200605484B (en) | 2007-12-27 |
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