| 摘要 |
PURPOSE: An explosion-proof pan tilt apparatus of the automatic surveillance camera for the waterproofing and the ability of dustproof is provided to drive the retainer so that the explosion-proof pan tilt apparatus of the automatic surveillance camera runs the unmmaned camera unit to the up down left right and rainwater or the eye other foreign material. CONSTITUTION: A panning housing(14) is fixed to a mount(1). The panning housing is pivotally combined in a fixed axis carrying the first helical gear. The first step motor is fixed within the panning housing. So that the first step motor transfers the power to the first helical gear, the first spur gear going in gear with the first helical gear is included.
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