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Home Coded Keyboard-assembly

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 Keyboard assembly

Details
Inventors: Chao, Shih-Hung;
Assignee: Acer Peripherals, Inc. (Taoyuan, TW)
Primary Examiner: Hilten; John S.
Assistant Examiner: Nguyen; Anthony H.
Attorney, Agent or Firm: Ladas & Parry

The present invention relates a water-resistant structure for keyboard assemblies with enhanced water-resistant ability. A keyboard hood is provided with a plurality of first slant walls extending toward the keyboard base, a keyboard base is provided with a plurality of second slant wall extending toward the keyboard hood and in parallel with the first slant walls, and an elastic water-resistant sheet is provided with upward-extending slanted edges sandwiched between the first and the second slant wall so as to form a water-resistant structure when the keyboard assembly has been fabricated. The keyboard base is fastened to the keyboard hood by fastening screws passing through holes formed in the centers of bosses in the keyboard base and screwed into holes in protrusion portions formed as part of the keyboard hood. Step-shaped sections are formed near the tip ends of the protrusion portions so as to form a tight water-proof seal between the keyboard hood and the base when the tip ends are assembled into contact with the base. Plural pairs of first parallel ribs are formed on the base, and the elastic water-resistant sheet is shaped so that it can be deeply embedded into the first slots formed between each pair of the first ribs and can cover the ribs and the keyboard base when the keyboard assembly has been fabricated. A plurality of second ribs are formed on the keyboard hood, which, when the keyboard assembly is fabricated, are deeply embedded into second slots formed in the water-resistant sheet.

DETAILED DESCRIPTION It is therefore an object of this invention to provide a keyboard assembly with a water-resistant structure that can strongly prevent water from entering the keyboard assembly.
The keyboard assembly according to this invention is used for inputting data into a computer via keys.
The keyboard assembly has a keyboard hood, on which keys are disposed; a circuit membrane disposed within the keyboard assembly, for being actuated by the keys disposed on the keyboard hood; an elastic water-resistant sheet disposed between the keys and the circuit membrane; and a keyboard base fastened to the keyboard hood so as to enclose the water-resistant sheet and the circuit membrane therebetween.
The keyboard assembly is characterized in that: the keyboard hood is provided with a plurality of first slant wall extending toward the keyboard base; the keyboard base is provided with a plurality of second slant wall extending toward the keyboard hood and in parallel with the first slant wall; and the elastic water-resistant sheet is provided with upward-extending slant verges sandwiched between the first and the second slant wall so as to form a water-resistant structure when the keyboard assembly has been fabricated.
Furthermore, the keyboard assembly is characterized in that: the keyboard base is fastened to the keyboard hood by fastening screws passing through the through holes formed in the centers of the bosses of the keyboard base; the fastening screws are screwed into holes formed in protrusion portions 219 formed together with the keyboard hood; and step-shaped sections are formed on the tip ends of the protrusion portions 219 so as to form tight water-proof seal between the keyboard hood and the base when the keyboard assembly has been fabricated.
Furthermore, the keyboard assembly is characterized in that: plural pairs of first parallel ribs are formed on the base; the elastic water-resistant sheet is in a shape that it can be deeply embedded into the first slots formed between each pair of the first ribs and can cover the ribs and the keyboard base when the keyboard assembly has been fabricated; and a plurality of second ribs are formed on the keyboard hood, which are deeply embedded into the second slots of the water-resistant sheet when the keyboard assembly has been fabricated


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