Waterproof housing for digital devices having capacitive touch screen and its actuator mechanism

摘要

An actuator mechanism for actuating a capacitive touch screen of a digital device held in a waterproof housing includes an actuator shaft extending through an opening formed on the housing, a press button connected to an outer end of the shaft, a probe head connected to an inner end of the shaft, and a biasing member adapted to urge the probe head away from the touch screen, whereby pushing the press button against the biasing force moves the probe head towards and in contact with the touch screen. A waterproof housing having actuator mechanisms is also disclosed.

主权项

1. A waterproof housing for a digital device having a capacitive touch screen, the waterproof housing comprising:
a housing body for holding therein the digital device; an actuator shaft extending through an opening formed on the housing body; a press button connected to an outer end of the shaft; a probe head connected to an inner end of the shaft; a biasing spring adapted to urge the probe head away from the touch screen, wherein pushing the press button against a spring force of the biasing spring moves the probe head towards and in contact with the touch screen; and a biasing deformable dome-shaped pad mounted on the probe head facing the touch screen, and adapted to come into contact with and deform into a generally flat surface urging against the touch screen when the press button is further pushed against the spring force of the biasing spring and a biasing force of the biasing deformable dome-shaped probe pad; wherein the press button, the shaft, the probe head and the probe pad are made of materials capable of conducting electric charge; and wherein when a contact area between the probe pad and the touch screen becomes large enough, electric charge passes through the press button, the shaft, the probe head and the probe pad to the touch screen.