| 摘要 |
PURPOSE: A pipe coupler is provided to firmly fix a connecting cylinder by strongly pressing a fixing pin between a pipe and a fixing cylinder so that the pipe is simply connected. CONSTITUTION: A pipe coupler comprises a connecting cylinder(20), a fixing pin(25), a fixing cylinder(10), and a joining socket(30). The connecting cylinder comprises an insertion portion(21) and a male threaded portion(26). The insertion portion is inserted into the inside of a pipe and the male threaded portion is exposed to the outside of the pipe. The fixing pin is inserted into through-holes(22,23) of the connecting cylinder so that the top of the fixing pin faces the inner peripheral surface of the connecting cylinder and the bottom of the fixing pin is exposed to the inside of the connecting cylinder. The fixing cylinder is inserted into the inside of the connecting cylinder and the lower part of the fixing pin is inserted into recessed grooves(12,13) of the outer peripheral surface of the fixing cylinder. A female threaded portion(32) thread-joined with the male threaded portion of the connecting cylinder is formed in the inner peripheral surface of the joining socket and a male threaded portion(34) is formed in the outer peripheral surface of the joining socket.
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