| 摘要 |
PURPOSE: A height regulating apparatus fixed to ceiling is provided to control easily the height of a camera, a projector, and a lighting apparatus installed on the ceiling by improving a structure of the height regulating apparatus. CONSTITUTION: A height regulating apparatus includes a main body(10), a cover(20), a support member(30), a plurality of elevation members(40a-40d), a screw bar, a motor(60), a plurality of elevation wires, an installation plate(80), a rack, a pinion(91), a switching member(100), and a plurality of limit switches(L1,L2). The main body(10) is fixed to the ceiling. The cover is connected to both sides of the main body by using a hinge(21). The support member is fixed to inner sides of the main body(10). The elevation members(40a-40d) are combined with the support member(30). The screw bar is used for elevating the highest elevation member(40a). The motor(60) is used for driving the screw bar(50). The elevation wires are used for elevating the remaining elevation members(40b-40d). The installation plate(80) is connected to the lowest elevation member(40d). The rack and the pinion(91) are used for elevating the installation plate(80). The switching member(100) is used for opening or shutting the cover(20). The limit switches(L1,L2) are used for controlling an operating limit of the elevation member(40a). |
