Link Type Pipe Stopper Head

摘要

PURPOSE: A link-type pipe stopper head is provided to use a small fitting by minimizing diameter using a mechanical link system when entering or exiting a pipe. CONSTITUTION: A link-type pipe stopper head comprises first and second gear housings(110,210), foldable ribs(310), a blocking membrane(330), and first and second bevel-type gears. When entering or exiting a pipe, a small fitting is used and a boring diameter is minimized since the first and second gear housings are located in a straight line and the foldable ribs and the blocking member are folded. After the foldable rib and the blocking member enter the pipe in a folded state, the first and second gear housing rotate by 90° and the first and second bevel gears engage. While the second bevel-type gear rotates and the foldable rib is unfolded, the blocking membrane tightly closes the inside of the pipe.