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WO2009116739A2 - Plaque métallique ultra-mince pour dispositif à interrupteur et son procédé de préparation - Google Patents

Plaque métallique ultra-mince pour dispositif à interrupteur et son procédé de préparation Download PDF

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Publication number
WO2009116739A2
WO2009116739A2 PCT/KR2009/001165 KR2009001165W WO2009116739A2 WO 2009116739 A2 WO2009116739 A2 WO 2009116739A2 KR 2009001165 W KR2009001165 W KR 2009001165W WO 2009116739 A2 WO2009116739 A2 WO 2009116739A2
Authority
WO
WIPO (PCT)
Prior art keywords
metal sheet
ultra thin
switch button
button device
metal plate
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/KR2009/001165
Other languages
English (en)
Other versions
WO2009116739A3 (fr
Inventor
Seong Je Park
Cheol Min Park
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.)
Individual
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 CN2009801090271A priority Critical patent/CN101978448A/zh
Publication of WO2009116739A2 publication Critical patent/WO2009116739A2/fr
Publication of WO2009116739A3 publication Critical patent/WO2009116739A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/02—Contacts characterised by the material thereof
    • H01H1/021—Composite material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/40—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling foils which present special problems, e.g. because of thinness
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D1/00—Electroforming
    • C25D1/02—Tubes; Rings; Hollow bodies
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/12—Electroplating: Baths therefor from solutions of nickel or cobalt
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/46—Electroplating: Baths therefor from solutions of silver

Definitions

  • the present invention relates to an ultra thin metal plate for a switch button device being used in electronic equipments, and more particularly, to an ultra thin metal plate that improves quality of a switch button device by preventing separation of nickel or silver while pressing the ultra thin metal plate to form the switch button device and prevents damages of a mold or a pressing machine due to the separated nickel or silver powder by strongly attaching nickel or silver onto the surface of the ultra thin metal plate by electroplating, and a method of preparing the same.
  • Such a small switch button device is configured to control or to switch on/off operation of equipment by engaging an integrated highly elastic metal plate with an electric contact of the equipment or disengaging the metal plate from the electric contact of the equipment.
  • the switch button device is formed by setting a highly elastic metal tape heat-treated at 450 ⁇ 520°C in a pressing machine and pressing the metal tape with a mold.
  • an ultra thin metal plate for a switch button device In order to improve electric characteristics of the switch button device, an ultra thin metal plate for a switch button device must be processed with a metal, such as stainless steel and phosphor bronze, in a form of sheet having a thickness 0.025 ⁇ 0.08 mm, heat-treated at 450 ⁇ 520°C to provide an high elasticity, and coated with nickel or silver.
  • a metal such as stainless steel and phosphor bronze
  • an ultra thin metal plate for a switch button device is produced by coating either surface or both surfaces of the highly elastic metal sheet having a thickness 0.025 ⁇ 0.08 mm with a spray of metal powder, and post-curing, to satisfy the above requirements.
  • a conventional ultra thin metal plate for a switch button device may be easily produced by coating a surface of a metal sheet with a spray of metal powder.
  • the metal powder is easily separated from the ultra thin metal plate while producing a switch button device by setting the ultra thin metal plate in a pressing machine and pressing the ultra thin metal plate with a mold, because bonding strength between the metal sheet and the metal powder coating is very low. If metal powder is separated from the ultra thin metal plate of switch button device, the quality of the produced switch button device deteriorates to a large extent and the production efficiency of the switch button device decreases greatly because it requires time and efforts to clean metal powder fixed to a mold or to a switch button device. Further, the metal powder separated from the ultra thin metal plate of the switch button device may damage the mold and give a bad influence to the pressing machine, and results in frequent breakdowns and short lifetime of the pressing machine.
  • the present invention has been made in view of the above problems, and provides an ultra thin metal plate that prevents separation of nickel or silver while pressing process the ultra thin metal plate to form a switch button device by strongly attaching nickel or silver onto the surface of the ultra thin metal plate by electroplating, and a method of preparing the same.
  • an ultra thin metal plate for a switch button device is formed by heat-treating a metal sheet of a rolled metal hot coil at a predetermined temperature, washing with an acid, forming a coating layer of nickel or silver on the surfaces of the metal sheet with electroplating, and slitting the metal sheet in a predetermined width.
  • a method of preparing an ultra thin metal plate for a switch button device includes steps: forming a metal sheet by rolling a metal hot coil; forming an elastic metal sheet by heat-treating the metal sheet at a predetermined temperature to eliminate an internal stress from the metal sheet and to increase elasticity of the metal sheet; washing the elastic metal sheet with an acid to clean the surfaces of the elastic metal sheet and to form an oxide film on the surfaces of the elastic metal sheet; forming a coating layer by electroplating the surfaces of the acid-washed elastic metal sheet with nickel or silver; and slitting the elastic metal sheet having a coating layer in a predetermined width.
  • the ultra thin metal plate for a switch button device produced according to the present invention nickel or silver is strongly attached to the surfaces of the ultra thin metal plate by electroplating. Therefore, the quality of the switch button device is greatly improved because nickel or silver is hardly separated from the ultra thin metal plate while pressing the ultra thin metal plate to form the switch button device, and the production efficiency of the switch button device is greatly increased because time and efforts to clean metal powder fixed to a mold or to the switch button device may be avoided.
  • the ultra thin metal plate for a switch button device may prevent damages of a mold or a pressing machine caused by separated nickel or silver powder.
  • An ultra thin metal plate for a switch button device is technically characterized that a coating layer is formed by electroplating a surface of a metal sheet with nickel or silver instead of spraying metal powder.
  • the ultra thin metal plate as a base material of a switch button device is formed by rolling a metal hot coil of stainless steel or phosphor bronze in a predetermined thickness.
  • the metal sheet formed by rolling a metal hot coil is in a hardened state due to its internal stress, and therefore the internal stress of the metal sheet must be eliminated to provide a high elasticity such that the ultra thin metal plate can be prepared suitable for a switch button device.
  • the metal sheet is heat-treated at 450 ⁇ 520°C in a conventional method to eliminate the internal stress and to provide a high elasticity.
  • the metal sheet is heat-treated at 450 ⁇ 520? in the conventional method, a high elasticity of the metal sheet may be obtained but undesired scales are formed on the surface of the metal sheet. If scales are formed on the surface of the elastic metal sheet, it becomes difficult to electroplate the elastic metal sheet uniformly due to interruption of the scales, and results in deterioration of the quality and durability of the ultra thin metal plate for a switch button device.
  • the elastic metal sheet is washed with an acid such that an oxide film accelerating an electroplating effect is formed at the same time of eliminating the scales from the surface of the elastic metal sheet.
  • a coating layer of nickel or silver is formed on the surfaces of the elastic metal sheet by electroplating the elastic metal sheet with nickel or silver.
  • a coating layer of nickel or silver is formed on the surfaces of the elastic metal sheet by electroplating the elastic metal sheet with nickel or silver, the electroplated coating layer strongly attaches to the elastic metal sheet. Therefore, nickel or silver is hardly separated from the ultra thin metal plate while producing a switch button device by pressing the ultra thin metal plate made from the elastic metal sheet.
  • the ultra thin metal plate for a switch button device is prepared by forming a coating layer of nickel or silver on the surfaces of the elastic metal sheet, slitting into a predetermined width, and winding onto a reel.
  • the switch button device is manufactured by setting the ultra thin metal plate in a pressing machine and pressing the ultra thin metal plate with a mold.
  • nickel or silver is hardly separated from the ultra thin metal plate, and thereby the quality and production efficiency of the switch button device are greatly improved because time and efforts to clean metal powder fixed to a mold or to a switch button device can be avoided.
  • the method of preparing an ultra thin metal plate for a switch button device starts with a step of forming a metal sheet by rolling a metal hot coil (Step S10).
  • the ultra thin metal plate as a base material of a switch button device is formed by rolling a metal hot coil of stainless steel or phosphor bronze.
  • the ultra thin metal plate for a switch button device is prepared by using the metal sheet as a base material.
  • the method of preparing an ultra thin metal plate for a switch button device includes a step of forming an elastic metal sheet by heat-treating the metal sheet at 450 ⁇ 520°C such that an internal stress of the metal sheet is eliminated and elasticity of the metal sheet is increased (Step S20).
  • the metal sheet formed by rolling a metal hot coil at Step 10 is in a hardened state due to an internal stress generated by rolling. Therefore, the internal stress must be eliminated from the metal sheet and elasticity of the metal sheet must be increased to form an ultra thin metal plate suitable for a switch button device.
  • the metal sheet is heat-treated at 450 ⁇ 520°C to provide the elastic metal sheet suitable for a switch button device by eliminating the internal stress of the metal sheet and improving the elasticity of the metal sheet.
  • the method of preparing an ultra thin metal plate for a switch button device includes a step of washing with an acid to clean the surfaces of the elastic metal sheet and to form an oxide film on the surfaces of the elastic metal sheet (Step S30).
  • Step S20 If the metal sheet is heat-treated at 450 ⁇ 520? at Step S20, a high elastic property is provided to the metal sheet but sales are formed on the surfaces of the metal sheet. If scales interrupting an electroplating effect of the elastic metal sheet are formed on the surfaces of the elastic metal sheet, it becomes difficult to electroplate the elastic metal sheet uniformly due to the scales, and results in deterioration of the quality and durability of the ultra thin metal plate for a switch button device.
  • the elastic metal sheet is washed with an acid to form an oxide film accelerating an electroplating effect on the surfaces of the elastic metal sheet at the same time of eliminating scales from the elastic metal sheet.
  • the method of preparing an ultra thin metal plate for a switch button device includes a step of forming a coating layer by electroplating the surfaces of the acid-washed elastic metal sheet with nickel or silver (Step S40).
  • the elastic metal sheet becomes to have a characteristic that nickel or silver is hardly separated from the ultra thin metal plate while pressing the ultra thin metal plate made from the elastic metal sheet to form a switch button device.
  • the method of preparing an ultra thin metal plate for a switch button device includes a step of slitting the elastic metal sheet having a coating layer in a predetermined width (Step S50).
  • the ultra thin metal plate for a switch button device is produced by slitting the elastic metal sheet having a coating layer of nickel or silver formed at Step S40 and winding the slit elastic metal sheet onto a reel.
  • the ultra thin metal plate for a switch button device is then set in a pressing machine and pressed with a mold to produce a switch button device.
  • the quality of the switch button device is greatly improved because nickel or silver is not separated from the ultra thin metal plate and the production efficiency of the switch button device is greatly improved because time and efforts to clean metal powder fixed to a mold or to a switch button device are not required.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Switches (AREA)
  • Mechanical Control Devices (AREA)

Abstract

La présente invention se rapporte à une plaque métallique ultra-mince pour un dispositif à interrupteur utilisée dans des équipements électroniques. La plaque métallique ultra-mince est formée par le traitement à chaud d’une feuille métallique d’une bobine métallique chaude roulée à une température prédéfinie, par le lavage par un acide, par la formation d’une couche de revêtement de nickel ou d’argent sur les surfaces de la feuille métallique par galvanoplastie, et par la découpe de la feuille métallique sur une largeur prédéfinie. Le nickel ou l’argent se fixe fermement aux surfaces de la plaque métallique ultra-mince par galvanoplastie. Par conséquent, la qualité du dispositif à interrupteur est considérablement améliorée parce que le nickel ou l’argent se sépare difficilement de la plaque métallique ultra-mince pendant le pressage de la plaque métallique ultra-mince pour former un dispositif à interrupteur. En outre, on peut éviter l’endommagement d’un moule ou d’une machine de pressage provoqué par la poudre de nickel ou d’argent séparé.
PCT/KR2009/001165 2008-03-18 2009-03-09 Plaque métallique ultra-mince pour dispositif à interrupteur et son procédé de préparation Ceased WO2009116739A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009801090271A CN101978448A (zh) 2008-03-18 2009-03-09 用于开关按钮元件的超薄金属板及其制备方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020080024690A KR100851660B1 (ko) 2008-03-18 2008-03-18 스위치 버튼 소자용 금속박판 및 그 제조 방법
KR10-2008-0024690 2008-03-18

Publications (2)

Publication Number Publication Date
WO2009116739A2 true WO2009116739A2 (fr) 2009-09-24
WO2009116739A3 WO2009116739A3 (fr) 2009-12-17

Family

ID=39881582

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2009/001165 Ceased WO2009116739A2 (fr) 2008-03-18 2009-03-09 Plaque métallique ultra-mince pour dispositif à interrupteur et son procédé de préparation

Country Status (3)

Country Link
KR (1) KR100851660B1 (fr)
CN (1) CN101978448A (fr)
WO (1) WO2009116739A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100979999B1 (ko) 2010-03-10 2010-09-03 여인기 메탈 돔용 알루미늄층 금속박판 제조방법

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1573008A (en) * 1975-12-19 1980-08-13 Mccord Corp Metallized flexible plastics automobile trimcomponent
JP3159592B2 (ja) * 1993-07-23 2001-04-23 ダイワ精工株式会社 金属装飾層を有する物品
KR19980083821A (ko) * 1997-05-19 1998-12-05 서상기 스퍼터링법에 의한 전자파 차폐용 금속박막 제조장치 및 제조방법
US6767435B1 (en) * 1999-09-17 2004-07-27 Topy Kogyo Kabushiki Kaisha Bright surface structure and a manufacturing method thereof
US6562165B1 (en) 2000-08-15 2003-05-13 S.C. Johnson Home Storage, Inc. Method for laminating closure member to film web
JP2007103586A (ja) 2005-10-03 2007-04-19 Nitto Denko Corp 配線回路基板の製造方法

Also Published As

Publication number Publication date
WO2009116739A3 (fr) 2009-12-17
CN101978448A (zh) 2011-02-16
KR100851660B1 (ko) 2008-08-13

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