| 摘要 |
An input device having an extendible body or housing suitable for a hand-held operation. The input device includes a housing assembly including a palm-rest section and a base section opposite to the palm-rest section, a switch mechanism accommodated in the housing assembly and including an operating section arranged adjacent to the palm-rest section, and a motion detecting mechanism accommodated in the housing assembly and including a detecting section arranged adjacent to the base section. The housing assembly includes a plurality of cover members configured by dividing the palm-rest section and the base section into plural parts while keeping a condition where the palm-rest section and the base section are integrally associated with each other. The housing assembly also includes an inner casing at least partially enclosed within the plurality of cover members, and a link arrangement for linking the plurality of cover members with the inner casing. The inner casing carries the switch mechanism and the motion detecting mechanism. The link arrangement permits the plurality of cover members to shift, relative to each other in a desired direction, toward or away from each other.
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