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US20040124194A1 - Electro-magnetic interference shield with locking latch - Google Patents

Electro-magnetic interference shield with locking latch Download PDF

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Publication number
US20040124194A1
US20040124194A1 US10/334,869 US33486902A US2004124194A1 US 20040124194 A1 US20040124194 A1 US 20040124194A1 US 33486902 A US33486902 A US 33486902A US 2004124194 A1 US2004124194 A1 US 2004124194A1
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US
United States
Prior art keywords
tab
metal sheet
metal
sheet
wall sections
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.)
Abandoned
Application number
US10/334,869
Inventor
Sam Beizai
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.)
Intel Corp
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to US10/334,869 priority Critical patent/US20040124194A1/en
Assigned to INTEL CORPORATION reassignment INTEL CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BEIZAI, SAM
Publication of US20040124194A1 publication Critical patent/US20040124194A1/en
Abandoned legal-status Critical Current

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    • 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
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/04—Metal casings
    • 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
    • H05K9/0049—Casings being metallic containers

Definitions

  • the subject matter disclosed herein generally relates to the field of electro-magnetic interference shielding.
  • Electronic and opto-electronic components are sensitive to electro-magnetic radiation.
  • One way of preventing or reducing electromagnetic interference is by enclosing the electronic and opto-electronic components within a metal enclosure.
  • FIG. 1 is a 3-dimensional representation of a metal sheet used to form an electro-magnetic interference shield.
  • FIG. 2 is a 3-dimensional representation of the metal sheet of FIG. 1, with the wall sections bent to form an enclosure.
  • FIG. 3 is a representation of one embodiment of a metal sheet that forms a full enclosure when all the wall sections are bent toward one another.
  • FIG. 4 is a flowchart that shows one embodiment of forming an electro-magnetic shield from a sheet of metal.
  • An electromagnetic interference shield is used for reducing electro-magnetic interference.
  • the electromagnetic interference shield may be used to shield electro-magnetic radiation from components either inside or outside of the metal shield, depending on whether the components generating the electromagnetic radiation are located inside or outside of the shield.
  • FIG. 1 is a 3-dimensional representation of a metal sheet used to form an electro-magnetic interference shield.
  • the metal sheet 10 has a plurality of etched lines 12 that separate the metal sheet into separate wall sections 14 .
  • the etched lines may be made by a variety of different etching techniques. In one embodiment, the etching may be performed on one side of the metal sheet and may include etching the metal sheet by approximately a quarter to a half of the thickness of the metal sheet. In another embodiment, the etching may be performed on both sides of the metal sheet. In one embodiment, the metal sheet may have a thickness of approximately 0.0005 to 0.062 inches.
  • Various metals may be used, including but not limited to, aluminum, copper, brass, kovar, invar, nickel, stainless steel, and so forth.
  • At least one of the wall sections has one or more first tab sections 20 formed in the metal sheet. At least a different one of the wall sections has a second tab section 22 . Other wall sections may have additional tab sections.
  • first tab sections 20 are extensions of metal forming a “male” portion
  • second tab section 22 form a “female” portion having a hole. The first tab section and the second tab section interlock with one another.
  • the tab sections may be formed by a variety of different methods.
  • the tab sections may be formed in the metal sheet by a stamping process, or the tab sections may be formed in the metal sheet via an etch process.
  • FIG. 2 is a 3-dimensional representation of the metal sheet of FIG. 1, with the wall sections bent to form an enclosure 30 .
  • the wall sections may form a full enclosure or they may form a partial enclosure. Additional metal sheets may be combined with the structure of FIG. 2 to fully enclose one or more electronic and/or optoelectronic components.
  • FIG. 3 is a representation of one embodiment of a metal sheet 40 that forms a full enclosure when all the wall sections are bent toward one another. Additional tabs may be employed to help keep the wall sections substantially perpendicular to one another.
  • FIG. 4 is a flowchart that shows one embodiment of forming an electro-magnetic shield from a sheet of metal. The reader will appreciate that the flowchart is merely for illustration, and does not in all cases imply strict ordering, and that various of the operations may be performed in different orders, or in parallel.
  • the flowchart starts at block 100 , and continues at block 102 , at which one or more electrical or opto-electronic components are placed on the sheet on metal.
  • one or more insulating layers may separate the electrical or opto-electronic components from the sheet of metal.
  • various openings within the sheet of metal may be employed to allow electrical and optical connections to enter and exit the metal shield.
  • the metal sheet is bent along etched lines in the metal sheet. At least three wall sections are bent toward one another to form an at least partially enclosed structure.
  • a first tab on one wall is interlocked with a second tab on a second wall to hold the at least partially enclosed structure together.
  • one or more additional sheets of metal are optionally attached to the at least partially enclosed structure to fully enclose the structure.
  • the first tab and/or the second tab are optionally bent to further hold the at least partially enclosed structure together.
  • additional tabs may also be employed to further hold the at least partially enclosed structure together. Additional adhesives or epoxies may additionally be used to further hold the structure together. “Holding together” the structure, is deemed to include any assistance to keeping the structure from returning to its planar state.

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

Abstract

An electromagnetic shield is formed from an etched metal sheet so that walls can be bent along etched lines to form an at least partially enclosed structure. A first wall has a first tab, such as a “male” portion, and a second wall has a second tab, such as a “female” portion. The first and second tabs interlock to hold the structure together.

Description

    FIELD
  • The subject matter disclosed herein generally relates to the field of electro-magnetic interference shielding. [0001]
    • DESCRIPTION OF RELATED ART
  • Electronic and opto-electronic components are sensitive to electro-magnetic radiation. One way of preventing or reducing electromagnetic interference is by enclosing the electronic and opto-electronic components within a metal enclosure.[0002]
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a 3-dimensional representation of a metal sheet used to form an electro-magnetic interference shield. [0003]
  • FIG. 2 is a 3-dimensional representation of the metal sheet of FIG. 1, with the wall sections bent to form an enclosure. [0004]
  • FIG. 3 is a representation of one embodiment of a metal sheet that forms a full enclosure when all the wall sections are bent toward one another. [0005]
  • FIG. 4 is a flowchart that shows one embodiment of forming an electro-magnetic shield from a sheet of metal.[0006]
  • Note that use of the same reference numbers in different figures indicates the same or like elements. [0007]
    • DETAILED DESCRIPTION
  • An electromagnetic interference shield is used for reducing electro-magnetic interference. The electromagnetic interference shield may be used to shield electro-magnetic radiation from components either inside or outside of the metal shield, depending on whether the components generating the electromagnetic radiation are located inside or outside of the shield. [0008]
  • FIG. 1 is a 3-dimensional representation of a metal sheet used to form an electro-magnetic interference shield. The [0009] metal sheet 10 has a plurality of etched lines 12 that separate the metal sheet into separate wall sections 14. The etched lines may be made by a variety of different etching techniques. In one embodiment, the etching may be performed on one side of the metal sheet and may include etching the metal sheet by approximately a quarter to a half of the thickness of the metal sheet. In another embodiment, the etching may be performed on both sides of the metal sheet. In one embodiment, the metal sheet may have a thickness of approximately 0.0005 to 0.062 inches. Various metals may be used, including but not limited to, aluminum, copper, brass, kovar, invar, nickel, stainless steel, and so forth.
  • At least one of the wall sections has one or more [0010] first tab sections 20 formed in the metal sheet. At least a different one of the wall sections has a second tab section 22. Other wall sections may have additional tab sections.
  • In one embodiment, the [0011] first tab sections 20 are extensions of metal forming a “male” portion, and the second tab section 22 form a “female” portion having a hole. The first tab section and the second tab section interlock with one another.
  • The tab sections may be formed by a variety of different methods. For example, the tab sections may be formed in the metal sheet by a stamping process, or the tab sections may be formed in the metal sheet via an etch process. [0012]
  • FIG. 2 is a 3-dimensional representation of the metal sheet of FIG. 1, with the wall sections bent to form an [0013] enclosure 30. The wall sections may form a full enclosure or they may form a partial enclosure. Additional metal sheets may be combined with the structure of FIG. 2 to fully enclose one or more electronic and/or optoelectronic components.
  • FIG. 3 is a representation of one embodiment of a [0014] metal sheet 40 that forms a full enclosure when all the wall sections are bent toward one another. Additional tabs may be employed to help keep the wall sections substantially perpendicular to one another.
  • FIG. 4 is a flowchart that shows one embodiment of forming an electro-magnetic shield from a sheet of metal. The reader will appreciate that the flowchart is merely for illustration, and does not in all cases imply strict ordering, and that various of the operations may be performed in different orders, or in parallel. [0015]
  • The flowchart starts at [0016] block 100, and continues at block 102, at which one or more electrical or opto-electronic components are placed on the sheet on metal. Of course, one or more insulating layers may separate the electrical or opto-electronic components from the sheet of metal. Additionally, various openings within the sheet of metal may be employed to allow electrical and optical connections to enter and exit the metal shield.
  • At [0017] block 104, the metal sheet is bent along etched lines in the metal sheet. At least three wall sections are bent toward one another to form an at least partially enclosed structure.
  • At [0018] block 106, a first tab on one wall is interlocked with a second tab on a second wall to hold the at least partially enclosed structure together.
  • At [0019] block 108, one or more additional sheets of metal are optionally attached to the at least partially enclosed structure to fully enclose the structure. At block 110, the first tab and/or the second tab are optionally bent to further hold the at least partially enclosed structure together. At block 112, additional tabs may also be employed to further hold the at least partially enclosed structure together. Additional adhesives or epoxies may additionally be used to further hold the structure together. “Holding together” the structure, is deemed to include any assistance to keeping the structure from returning to its planar state. The flowchart ends at block 114.
  • Thus, a method and apparatus for electromagnetic shielding is disclosed. However, the specific embodiments and methods described herein are merely illustrative. For example, although some embodiments were described with respect to a box shape, the concepts described can be modified to allow other shapes such as those with triangular shapes, and so forth. Numerous modifications in form and detail may be made without departing from the scope of the invention as claimed below. The invention is limited only by the scope of the appended claims. [0020]

Claims (21)

What is claimed is:
1. An apparatus comprising:
a metal sheet etched to form a plurality of wall sections, the plurality of wall sections bendable to form a structure having an at least partially enclosed area, at least a first wall section having a first tab formed from the metal sheet, at least a second wall section having a second tab formed from the metal sheet, wherein the first and second tabs interlock to hold the structure in place.
2. The apparatus of claim 1, wherein the metal sheet has a substantially uniform thickness.
3. The apparatus of claim 2, wherein the metal sheet has a thickness of approximately 0.0005 inches to 0.062 inches.
4. The apparatus of claim 1, wherein the first tab has a hole in it.
5. The apparatus of claim 4, wherein the second tab has an extension that fits within the hole of the first tab.
6. The apparatus of claim 1, wherein the metal sheet further comprises:
at least a third wall having a third tab formed from the metal sheet, at least a fourth wall having a fourth tab formed from the metal sheet, wherein the third and fourth tabs interlock to hold the structure together.
7. The apparatus of claim 6, wherein the first tab and the third tab are part of a common wall.
8. The apparatus of claim 1, wherein the metal sheet is etched on only one surface.
9. The apparatus of claim 1, wherein the metal sheet is etched on a top and bottom surface.
10. The apparatus of claim 1, wherein the plurality of wall sections of the structure are substantially perpendicular to one another.
11. The apparatus of claim 1, further comprising:
one or more electronic and/or optical interfaces in the metal sheet, and one ore more electronic and/or opto-electronic components within the structure coupled to the electronic and/or optical interfaces.
12. An apparatus comprising:
a metal sheet at least partially etched to allow a plurality of walls of the metal sheet to bend in separate planes to form an enclosed box, wherein at least one of the plurality of walls has a first tab, and at least one of the plurality of walls has a second tab, wherein the first and second tabs interlock.
13. The apparatus of claim 12, wherein the metal sheet has a substantially uniform thickness.
14. The apparatus of claim 12, wherein the first tab has a hole in it.
15. The apparatus of claim 14, wherein the second tab has an extension that fits within the hole of the first tab.
16. A method of forming an electromagnetic shield from a sheet of metal having etched lines separating the sheet of metal into at least three wall sections, at least one of the three wall sections having a first tab, and at least one of the three wall sections having a second tab, the method comprising:
bending the sheet of metal along the etched lines until the at least three wall sections form an at least partially enclosed structure; and
interlocking the first tab with the second tab to hold the at least partially enclosed structure together.
17. The method of claim 16, further comprising:
attaching a second sheet of metal to the at least partially enclosed structure to form a fully enclosed structure.
18. The method of claim 16, further comprising:
interlocking a third tab with a fourth tab to hold the at least partially enclosed structure together.
19. The method of claim 16, further comprising:
attaching a second sheet of metal to the at least partially enclosed structure to form a fully enclosed structure.
20. The method of claim 16, wherein the at least partially enclosed structure is fully enclosed.
21. The method of claim 16, further comprising:
placing one or more electronic and/or opto-electronic components in the at least partially enclosed structure.
US10/334,869 2002-12-31 2002-12-31 Electro-magnetic interference shield with locking latch Abandoned US20040124194A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US10/334,869 US20040124194A1 (en) 2002-12-31 2002-12-31 Electro-magnetic interference shield with locking latch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10/334,869 US20040124194A1 (en) 2002-12-31 2002-12-31 Electro-magnetic interference shield with locking latch

Publications (1)

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US20040124194A1 true US20040124194A1 (en) 2004-07-01

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2271195A1 (en) * 2009-06-29 2011-01-05 Electrolux Home Products Corporation N.V. Casing for a front cover of a household appliance
GB2560742A (en) * 2017-03-23 2018-09-26 Kirintec Ltd Container
CN109823689A (en) * 2019-01-15 2019-05-31 重庆市润金新材料研究院有限公司 A kind of antitheft transport case of bonding gold wire
US12075603B2 (en) 2021-03-18 2024-08-27 Murata Manufacturing Co., Ltd. Shielded electronic component

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4804136A (en) * 1987-10-07 1989-02-14 Grafcor Packaging Inc. Container
US5196988A (en) * 1991-02-21 1993-03-23 General Electric Company Power pedestal television and telephone adapter unit
US5881948A (en) * 1996-10-16 1999-03-16 Correll; John D. Expandable pizza box and method of use
US6142365A (en) * 1999-01-07 2000-11-07 Breitbach; William Foldable plastic box
US6369322B1 (en) * 1996-06-19 2002-04-09 Arlington Industries, Inc. Electric box extender and supplemental parts

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4804136A (en) * 1987-10-07 1989-02-14 Grafcor Packaging Inc. Container
US5196988A (en) * 1991-02-21 1993-03-23 General Electric Company Power pedestal television and telephone adapter unit
US6369322B1 (en) * 1996-06-19 2002-04-09 Arlington Industries, Inc. Electric box extender and supplemental parts
US5881948A (en) * 1996-10-16 1999-03-16 Correll; John D. Expandable pizza box and method of use
US6142365A (en) * 1999-01-07 2000-11-07 Breitbach; William Foldable plastic box

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2271195A1 (en) * 2009-06-29 2011-01-05 Electrolux Home Products Corporation N.V. Casing for a front cover of a household appliance
GB2560742A (en) * 2017-03-23 2018-09-26 Kirintec Ltd Container
US10442613B2 (en) * 2017-03-23 2019-10-15 Kirintec Limited Shielded airfreight container
GB2560742B (en) * 2017-03-23 2021-06-23 Kirintec Ltd Container
CN109823689A (en) * 2019-01-15 2019-05-31 重庆市润金新材料研究院有限公司 A kind of antitheft transport case of bonding gold wire
US12075603B2 (en) 2021-03-18 2024-08-27 Murata Manufacturing Co., Ltd. Shielded electronic component

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Date Code Title Description
AS Assignment

Owner name: INTEL CORPORATION, CALIFORNIA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BEIZAI, SAM;REEL/FRAME:014374/0198

Effective date: 20030513

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION