WO2002007177A1 - Schalteinrichtung für ein elektrisches gerät - Google Patents
Schalteinrichtung für ein elektrisches gerät Download PDFInfo
- Publication number
- WO2002007177A1 WO2002007177A1 PCT/EP2001/006828 EP0106828W WO0207177A1 WO 2002007177 A1 WO2002007177 A1 WO 2002007177A1 EP 0106828 W EP0106828 W EP 0106828W WO 0207177 A1 WO0207177 A1 WO 0207177A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electrically conductive
- conductive layer
- switching device
- button
- switching
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
- H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2221/00—Actuators
- H01H2221/07—Actuators transparent
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2239/00—Miscellaneous
- H01H2239/008—Static electricity considerations
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2239/00—Miscellaneous
- H01H2239/01—Miscellaneous combined with other elements on the same substrate
Definitions
- the invention relates to a switching device for an electrical device with a longitudinally displaceable push button provided for depressing, with an elastic switching mat delimiting an area with electrical contacts kept at a distance from one another and with a protective element against electrostatic discharge, the switching element being used for connection to a mass part of the electrical device is provided.
- the protective element is designed as a sheet arranged in front of the safety mat.
- the sheet has a recess in the area of the button.
- voltages of up to 25 kV can arise, which are derived from the sheet into the mass of the electrical device. This prevents damage to electronic components of the electrical device.
- a disadvantage of the known switching device is that the sheet metal is a very cost-intensive component to be manufactured and assembled.
- the invention is based on the problem of designing a switching device of the type mentioned at the outset in such a way that it can be produced particularly cost-effectively.
- This problem is solved according to the invention in that the protective element has an electrically conductive layer arranged on the side of the switch mat facing the button.
- the protective element By installing the protective element on the safety mat, protection against electrostatic discharge is automatically generated when the safety mat is installed. This eliminates the separate assembly of the protective element. Furthermore, the layer can be applied in a particularly cost-effective manner in comparison to the sheet metal part in the manufacture of the switch mat. As a result, the switching device according to the invention is particularly cost-effective. Another advantage of the invention is that the protective element requires a particularly small amount of space.
- the electrically conductive layer has conductive lacquer or contact ink.
- a conductive lacquer or such contact ink is mostly used as a contact within the switch mats and contains particles with an intended electrical conductivity, such as graphite.
- the electrically conductive layer for example, like the sheet metal of the known protective element, could have a very low electrical resistance. However, this leads to the fact that the electrical discharge is associated with a noticeable electric shock for the user of the switching device according to the invention. According to another advantageous development of the invention, an electric shock that is perceptible to the user can be avoided if the electrically conductive one Layer has a high electrical resistance compared to metal.
- an electrostatic discharge is discharged particularly reliably if the pushbutton has an electrically conductive layer in at least one partial area.
- FIG. 1 shows a sectional view through a switching device according to the invention
- Fig. A sectional view through an inventive switching device having lighting.
- FIG. 1 shows a switching device 1 with a pushbutton 2 that is longitudinally displaceable in a diaphragm.
- the switching device 1 is a single switching device that is used side by side in a keyboard for a computer or an entertainment device. To simplify the drawing, a partial area of a wall is shown from an earthed housing 3 of the keyboard or entertainment device.
- the switching device 1 has an aperture 4 and a circuit board 5 arranged at a distance from the aperture 4. Electrical contacts 6 and a switching mat 7 with a further electrical contact 8 are arranged on the circuit board 5.
- the contacts 8 of the switch mat 7 and the circuit board 5 face each other.
- the switch mat 7 is made of a rubber-elastic material. Tigt and biased in the position shown, in which the contacts 6, 8 are spaced apart. As a result, the button 2 is held in the position shown.
- the switching mat 7 When the button 2 is depressed, the switching mat 7 is deformed and its contact 8 is moved against the contacts 6 of the printed circuit board 5. Furthermore, electronic components 9 are arranged on the printed circuit board 5, which monitor the bridging of the contacts 6, 8 and generate an electronic signal. The electronic components 9 are also arranged below the switch mat 7.
- the switch mat 7 On its side facing the button 2, the switch mat 7 has a protective element 10 with an electrically conductive layer 11.
- the electrically conductive layer 11 is in the form of a conductive lacquer or a contact ink, such as is used for the electrical contact 8 arranged on the switch mat 7, educated. Furthermore, the electrically conductive layer 11 is connected to the housing 3 via a metal spring 12. An electrostatic discharge generated when the button 2 is touched reaches the electrically conductive layer 11 and is dissipated from there into the housing 3.
- FIG. 2 shows a switching device 13 in which a button 14 and a switching mat 15 have a recess 16.
- a light source 17 designed as an LED is arranged in the region of the recess 16.
- the button 14 can thereby be illuminated.
- the switch mat 15 has an electrically conductive layer 18.
- a portion of the button 14 also has an electrically conductive layer 19.
- the electrically conductive layers together form a protective element 20 for dissipating an electrostatic charge. Electrostatic discharge is carried out as with the switching device device 1 derived from Figure 1. Otherwise, the switching device 13 is essentially designed like that from FIG. 1.
- the button is made of an electrically conductive material or is coated with an electrically conductive material. A direct electrical connection of this conductive material to the switch mat is not necessary if the gap existing between the switch mat and the conductive material is made sufficiently small.
Landscapes
- Push-Button Switches (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Selective Calling Equipment (AREA)
- Control Of Electric Motors In General (AREA)
- Elimination Of Static Electricity (AREA)
- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002512991A JP2004504695A (ja) | 2000-07-18 | 2001-06-16 | 電気装置のためのスイッチ装置 |
DE50113419T DE50113419D1 (de) | 2000-07-18 | 2001-06-16 | Schalteinrichtung für ein elektrisches gerät |
EP01960322A EP1301936B1 (de) | 2000-07-18 | 2001-06-16 | Schalteinrichtung für ein elektrisches gerät |
AU2001281845A AU2001281845A1 (en) | 2000-07-18 | 2001-06-16 | Switch device for an electrical appliance |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10034771A DE10034771A1 (de) | 2000-07-18 | 2000-07-18 | Schalteinrichtung für ein elektrisches Gerät |
DE10034771.1 | 2000-07-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002007177A1 true WO2002007177A1 (de) | 2002-01-24 |
Family
ID=7649236
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2001/006828 WO2002007177A1 (de) | 2000-07-18 | 2001-06-16 | Schalteinrichtung für ein elektrisches gerät |
Country Status (8)
Country | Link |
---|---|
US (1) | US6580043B1 (de) |
EP (1) | EP1301936B1 (de) |
JP (1) | JP2004504695A (de) |
CN (1) | CN1443359A (de) |
AT (1) | ATE382186T1 (de) |
AU (1) | AU2001281845A1 (de) |
DE (2) | DE10034771A1 (de) |
WO (1) | WO2002007177A1 (de) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4295468B2 (ja) * | 2001-12-21 | 2009-07-15 | ポリマテック株式会社 | 照光式押釦スイッチ用カバー部材 |
US7009121B2 (en) * | 2002-04-25 | 2006-03-07 | Preh-Werke Gmbh & Co. Kg | Keyboard, especially for electronic payment terminals, and keypad |
US6917000B2 (en) * | 2003-01-17 | 2005-07-12 | Lite-On Technology Corporation | Signal input device |
JP3871136B2 (ja) * | 2003-10-03 | 2007-01-24 | 船井電機株式会社 | スイッチ装置 |
US7161106B2 (en) * | 2003-11-06 | 2007-01-09 | Nike, Inc. | Switching device for flexible material |
JP4438429B2 (ja) * | 2004-01-30 | 2010-03-24 | ブラザー工業株式会社 | スイッチ |
KR101054406B1 (ko) * | 2004-03-05 | 2011-08-05 | 엘지전자 주식회사 | 조작 버튼 |
KR100619852B1 (ko) * | 2004-04-30 | 2006-09-08 | 엘지전자 주식회사 | 이동통신 단말기 본체 |
JP2005353412A (ja) * | 2004-06-10 | 2005-12-22 | Alps Electric Co Ltd | 板バネ付シート、及びこの板バネ付シートを使用したスイッチ装置 |
KR100652665B1 (ko) * | 2004-08-31 | 2006-12-06 | 엘지전자 주식회사 | 이동 통신 단말기의 정전기 방지용 배터리 잠금 장치 |
JP4302024B2 (ja) * | 2004-09-17 | 2009-07-22 | 株式会社ソニー・コンピュータエンタテインメント | ボタン構造、携帯型電子装置 |
TW200635443A (en) * | 2005-03-30 | 2006-10-01 | Asustek Comp Inc | An electric device with electrostatic discharging structure |
JP4720454B2 (ja) * | 2005-11-15 | 2011-07-13 | ブラザー工業株式会社 | 電子機器 |
JP4695036B2 (ja) * | 2006-07-26 | 2011-06-08 | セイコーインスツル株式会社 | スイッチ構造および電子機器 |
JP2008270023A (ja) * | 2007-04-23 | 2008-11-06 | Tokai Rika Co Ltd | タッチセンサを備えたスイッチ |
US7498537B1 (en) * | 2007-08-24 | 2009-03-03 | Freudenberg-Nok General Partnership | Integrated conductive radio button |
JP2009163881A (ja) * | 2007-12-27 | 2009-07-23 | Toshiba Corp | 電子機器 |
US20090174992A1 (en) * | 2008-01-09 | 2009-07-09 | Eric Simon | System and Method for Supporting Electrical Connectivity Between Information Handling System Chassis Components |
JP5197420B2 (ja) * | 2009-02-17 | 2013-05-15 | キヤノン株式会社 | 電子機器 |
CN103151203A (zh) * | 2011-12-07 | 2013-06-12 | 深圳富泰宏精密工业有限公司 | 按键组件 |
TWI524367B (zh) * | 2012-04-12 | 2016-03-01 | 吳長隆 | 鍵盤之按鍵結構及其製造方法 |
CN109411278A (zh) * | 2017-08-16 | 2019-03-01 | 致伸科技股份有限公司 | 防静电放电的按键结构 |
KR102403356B1 (ko) * | 2017-11-01 | 2022-06-02 | 현대자동차주식회사 | 차량용 컨트롤 패널 |
CN116190142A (zh) * | 2021-11-26 | 2023-05-30 | 致伸科技股份有限公司 | 具有防静电功能的键盘装置 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4249054A (en) * | 1978-02-28 | 1981-02-03 | Sharp Kabushiki Kaisha | Metallic housing for an electronic apparatus with a flat keyboard |
GB2102626A (en) * | 1981-07-21 | 1983-02-02 | Standard Telephones Cables Ltd | Contact dimple pad |
GB2164496A (en) * | 1984-09-15 | 1986-03-19 | Motorola Israel Ltd | Back-illuminated membrane key |
US4812831A (en) * | 1987-02-10 | 1989-03-14 | Amp Incorporated | Key switch with controllable illumination |
DE29501466U1 (de) * | 1995-01-31 | 1995-03-30 | Celfa Ag, Seewen | Transparente Folie, insbesondere zur Herstellung von Frontfolien für Folientastaturen o.dgl. |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5686723U (de) * | 1979-12-07 | 1981-07-11 | ||
DE3733002A1 (de) * | 1986-09-30 | 1988-04-07 | Wilde Membran Impuls Tech | Additiv metallisierte elektrisch leitfaehige struktur |
DE4442073C2 (de) * | 1994-11-25 | 2001-10-18 | Cherry Mikroschalter Gmbh | Tastatur mit Metallplatte |
JPH08273473A (ja) * | 1995-03-29 | 1996-10-18 | Shin Etsu Polymer Co Ltd | 照光式押釦スイッチ装置 |
US5975711A (en) * | 1995-06-27 | 1999-11-02 | Lumitex, Inc. | Integrated display panel assemblies |
US5661279A (en) * | 1995-10-26 | 1997-08-26 | Sunarrow Co., Ltd. | Pushbutton switch |
JP3988203B2 (ja) * | 1996-10-22 | 2007-10-10 | 松下電器産業株式会社 | パネルスイッチ用可動接点体 |
US6044152A (en) * | 1998-01-15 | 2000-03-28 | Ericsson Inc. | Shielded keyboard for a portable communication device |
JPH11232963A (ja) * | 1998-02-13 | 1999-08-27 | Matsushita Electric Ind Co Ltd | パネルスイッチ用可動接点体およびそれを用いたパネルスイッチ |
JP4038265B2 (ja) * | 1998-02-17 | 2008-01-23 | セイコープレシジョン株式会社 | El付きシートスイッチ |
US6310308B1 (en) * | 2000-09-20 | 2001-10-30 | Spectra Lux Corporation | Compact push-button switch assembly |
-
2000
- 2000-07-18 DE DE10034771A patent/DE10034771A1/de not_active Withdrawn
-
2001
- 2001-06-16 CN CN01813073A patent/CN1443359A/zh active Pending
- 2001-06-16 WO PCT/EP2001/006828 patent/WO2002007177A1/de active IP Right Grant
- 2001-06-16 AU AU2001281845A patent/AU2001281845A1/en not_active Abandoned
- 2001-06-16 JP JP2002512991A patent/JP2004504695A/ja not_active Withdrawn
- 2001-06-16 EP EP01960322A patent/EP1301936B1/de not_active Expired - Lifetime
- 2001-06-16 DE DE50113419T patent/DE50113419D1/de not_active Expired - Lifetime
- 2001-06-16 AT AT01960322T patent/ATE382186T1/de not_active IP Right Cessation
- 2001-07-03 US US09/898,188 patent/US6580043B1/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4249054A (en) * | 1978-02-28 | 1981-02-03 | Sharp Kabushiki Kaisha | Metallic housing for an electronic apparatus with a flat keyboard |
GB2102626A (en) * | 1981-07-21 | 1983-02-02 | Standard Telephones Cables Ltd | Contact dimple pad |
GB2164496A (en) * | 1984-09-15 | 1986-03-19 | Motorola Israel Ltd | Back-illuminated membrane key |
US4812831A (en) * | 1987-02-10 | 1989-03-14 | Amp Incorporated | Key switch with controllable illumination |
DE29501466U1 (de) * | 1995-01-31 | 1995-03-30 | Celfa Ag, Seewen | Transparente Folie, insbesondere zur Herstellung von Frontfolien für Folientastaturen o.dgl. |
Non-Patent Citations (1)
Title |
---|
"TERMINAL KEYS WITH ANTI-STATIC PADS", IBM TECHNICAL DISCLOSURE BULLETIN, IBM CORP. NEW YORK, US, vol. 32, no. 4B, 1 September 1989 (1989-09-01), pages 18 - 19, XP000067089, ISSN: 0018-8689 * |
Also Published As
Publication number | Publication date |
---|---|
JP2004504695A (ja) | 2004-02-12 |
US6580043B1 (en) | 2003-06-17 |
DE50113419D1 (de) | 2008-02-07 |
EP1301936A1 (de) | 2003-04-16 |
ATE382186T1 (de) | 2008-01-15 |
EP1301936B1 (de) | 2007-12-26 |
DE10034771A1 (de) | 2002-01-31 |
AU2001281845A1 (en) | 2002-01-30 |
CN1443359A (zh) | 2003-09-17 |
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