Air buffer type apparatus for key durability testing
AssigneeDarfon Electronics Corp.
InventorChi-Pin Yeh
Life of this patent
Estimating the term…
Abstract
An air buffer type apparatus for key durability testing upon a keyboard is provided to carry out a durability test that can mimic a real finger typing operation. The apparatus includes a driving unit, a buffer unit and a depressing unit. The driving unit has a closed air space with a constant internal air pressure. The depressing unit is driven by the driving unit and further includes a plurality of abreasting air cylinders. Each air cylinder includes a pressure zone and a depressing head for depressing the key in the testing. The buffer unit can provide pressure buffering during the key pressing operation.
Claims9
An air buffer apparatus for durability testing keys of a keyboard, and comprising:
- a) a depressing unit including a movable rack having a plurality of air cylinders mounted thereon, each air cylinder including a piston head freely movable in a pressure chamber, a piston rod extending from the piston head exteriorly of the air cylinder and a depressing end on the piston rod;
- b) a driving device connected to the movable rack for simultaneously reciprocating the movable rack and the plurality of air cylinders towards and away from a keyboard under test;
- and
- c) an air pressure system including a closed air space for supplying a constant air pressure to the plurality of air cylinders,
- whereby, the depressing ends of the piston rods contact keys of a keyboard under test with a constant pressure.
Dependencies are inferred from the claim text.