EP1552541A1 - Sealed keyboard - Google Patents
Sealed keyboardInfo
- Publication number
- EP1552541A1 EP1552541A1 EP03775468A EP03775468A EP1552541A1 EP 1552541 A1 EP1552541 A1 EP 1552541A1 EP 03775468 A EP03775468 A EP 03775468A EP 03775468 A EP03775468 A EP 03775468A EP 1552541 A1 EP1552541 A1 EP 1552541A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- keyboard
- key
- rigid key
- rigid
- switch
- 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.)
- Granted
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
- H01H2221/002—Actuators integral with membrane
- H01H2221/006—Adhesive
Definitions
- the invention relates to the sealing of a keyboard.
- the invention finds particular but not exclusive utility in a keyboard fitted to an aircraft dashboard.
- a keyboard usually comprises at least one switch surmounted by a rigid key. An operator presses the top of the rigid button to operate the switch.
- the switch and the rigid key form moving parts which are sensitive to the penetration of solid or liquid particles liable to affect the functioning of the keyboard. The presence of these particles requires maintenance of the keyboard either by cleaning or by changing damaged moving parts.
- a keyboard generally comprises several switches each associated with a rigid key. The flexible film then covers all of the switches or all of the rigid keys. The flexibility of the film is necessary to ensure a deformation of the film during operations of or switches by an operator.
- the deformation of the film has a disadvantage for the operator. More specifically, the film introduces a flexible element between the operator's finger and the switch. This flexible element impairs the operator's precision in controlling the switch. For the operator, it is preferable to have only one rigid element between his finger and the switch. In the case where the flexible element is disposed between the switch and an associated rigid key, the flexible element provides additional movement of the rigid key when an operator presses the key. It is the same for a flexible film covering the key. The operator's finger then partially crushes the flexible element.
- the switch control precision is, for example, necessary on an aircraft dashboard. The pilot using the keyboard of this dashboard must be able to enter data relating to the conduct of the aircraft with perfect reliability and the presence of a flexible element degrades this reliability.
- the object of the invention is to remedy this defect by proposing a keyboard in which no flexible element is disposed between the operator's finger. and the switch while ensuring a seal comparable to that obtained with a continuous film covering the entire keyboard.
- the invention relates to a keyboard comprising at least one switch, a rigid key allowing an operator to operate the switch, a front face having an opening crossed by the .touche_rLgi.de, _et_des_moyens sealing. preventing_des-particles-da penetrate between the rigid key and the opening, characterized in that the sealing means comprise a flexible membrane crossed by the rigid key, fixed to the key and to the front face. It is understood that the invention is not limited to a single switch surmounted by a rigid button. The invention is particularly well suited to a keyboard comprising a large number of switches each surmounted by a rigid key.
- FIG. 1 shows an exemplary embodiment a keyboard according to the invention.
- the keyboard shown in FIG. 1 includes a switch 1 arranged on a support plate 2.
- the support plate 2 is, for example, a printed circuit plate ensuring the electrical connections necessary for the operation of the switch 1.
- the support plate 2 can carry several switches 1.
- the keyboard further comprises a rigid key 3, surmounting the switch 1, and allowing an operator to operate the switch 1.
- the material of the rigid key 3 is chosen so as to avoid any deformation of the key 3 when the operator presses the key 3.
- the keyboard also has a front face 4 comprising an opening 5 crossed by the rigid key 3.
- Sealing means prevent particles located outside the keyboard , that is to say where the operator is located, to enter between the rigid key 3 and the front face 4 through the space left free between the rigid key 3 and the opening 5. These particles pe They may consist of dust particles present in the ambient air or liquids liable to be spilled on the keyboard by the operator.
- the sealing means comprise a flexible membrane 6 crossed by the rigid key 3. The flexible membrane 6 is fixed both to the front face 4 and to rigid key 3 advantageously by gluing.
- the keyboards include means for limiting the stroke of the rigid key 3 relative to the front face 4. More specifically, these means_perschen-dlé .iter_qu'-appuLtrop important operator on the rigid key 3 n ' damages switch 1.
- the limiting means comprise for example a shoulder 8 belonging to the rigid key 3.
- the shoulder 8 forms a part 9 of the rigid key 3, a part which cannot penetrate inside the keyboard through the opening 5.
- the interior of the keyboard is the space between the support plate 2 and the front face 4.
- the switch 1 is located inside the keyboard.
- the shoulder 8 is used to fix the flexible membrane 6 and the shoulder 8 comes into contact with the front face 4 via the flexible membrane 6, which makes it possible to soften any impact between the rigid key 3 and the front face 4 when these two elements come into contact with the one of the other. Softening the shock reduces the noise level when the operator manipulates the keyboard.
- the stroke of the key is represented by the dimension C.
- the rigid key 3 is transparent and the keyboard comprises means for lighting the rigid key 3 from the interior of the keyboard.
- These lighting means comprise, for example, light-emitting diodes 10 fixed on the support plate 2 inside the keyboard.
- the light-emitting diodes are, for example, supplied by tracks printed on the support plate 2.
- the engraving can, for example, have the form -dun- or ⁇ -several-characters- alphanumeric.- The lighting- will thus make it possible to visualize this or these characters.
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0213006A FR2846144B1 (en) | 2002-10-18 | 2002-10-18 | KEYBOARD WATERPROOF |
FR0213006 | 2002-10-18 | ||
PCT/FR2003/002911 WO2004038747A1 (en) | 2002-10-18 | 2003-10-03 | Sealed keyboard |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1552541A1 true EP1552541A1 (en) | 2005-07-13 |
EP1552541B1 EP1552541B1 (en) | 2006-02-08 |
Family
ID=32050522
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03775468A Expired - Lifetime EP1552541B1 (en) | 2002-10-18 | 2003-10-03 | Sealed keyboard |
Country Status (9)
Country | Link |
---|---|
US (1) | US20060038706A1 (en) |
EP (1) | EP1552541B1 (en) |
AU (1) | AU2003283494A1 (en) |
BR (1) | BR0315424A (en) |
CA (1) | CA2502045A1 (en) |
DE (1) | DE60303519T2 (en) |
ES (1) | ES2254979T3 (en) |
FR (1) | FR2846144B1 (en) |
WO (1) | WO2004038747A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW201009538A (en) * | 2008-08-20 | 2010-03-01 | Pegatron Corp | Portable electronic apparatus |
KR101934714B1 (en) * | 2012-11-28 | 2019-01-03 | 삼성전자주식회사 | Key button apparatus |
CN113140421B (en) * | 2021-04-23 | 2023-01-13 | 维沃移动通信有限公司 | Processing method of electronic equipment |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3041859A1 (en) * | 1980-11-06 | 1982-06-03 | Preh Elektro Feinmechanik | KEYBOARD |
US4634623A (en) * | 1983-07-18 | 1987-01-06 | The Gates Corporation | Conductive elastomeric ink composition |
EP0263652B1 (en) * | 1986-10-06 | 1993-03-10 | Brother Kogyo Kabushiki Kaisha | Input device |
JP2710181B2 (en) * | 1992-01-28 | 1998-02-10 | 日本電気株式会社 | Illuminated key top structure |
EP0685860A1 (en) * | 1994-06-03 | 1995-12-06 | Hewlett-Packard Company | Full travel, sealed, fully backlighted keyboard |
JP3782521B2 (en) * | 1996-08-23 | 2006-06-07 | 富士通コンポーネント株式会社 | Pushbutton structure and keyboard |
-
2002
- 2002-10-18 FR FR0213006A patent/FR2846144B1/en not_active Expired - Fee Related
-
2003
- 2003-10-03 CA CA002502045A patent/CA2502045A1/en not_active Abandoned
- 2003-10-03 WO PCT/FR2003/002911 patent/WO2004038747A1/en not_active Application Discontinuation
- 2003-10-03 AU AU2003283494A patent/AU2003283494A1/en not_active Abandoned
- 2003-10-03 ES ES03775468T patent/ES2254979T3/en not_active Expired - Lifetime
- 2003-10-03 DE DE60303519T patent/DE60303519T2/en not_active Expired - Fee Related
- 2003-10-03 US US10/528,033 patent/US20060038706A1/en not_active Abandoned
- 2003-10-03 EP EP03775468A patent/EP1552541B1/en not_active Expired - Lifetime
- 2003-10-03 BR BR0315424-6A patent/BR0315424A/en not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO2004038747A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE60303519D1 (en) | 2006-04-20 |
ES2254979T3 (en) | 2006-06-16 |
US20060038706A1 (en) | 2006-02-23 |
EP1552541B1 (en) | 2006-02-08 |
CA2502045A1 (en) | 2004-05-06 |
FR2846144A1 (en) | 2004-04-23 |
BR0315424A (en) | 2005-08-16 |
AU2003283494A1 (en) | 2004-05-13 |
WO2004038747A1 (en) | 2004-05-06 |
DE60303519T2 (en) | 2006-08-24 |
FR2846144B1 (en) | 2005-04-15 |
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