| 摘要 |
PURPOSE: A pipe wrench is provided to offer convenience to a worker and to prevent the deformation of a tool by selectively restricting the rotation of a screw coupling unit. CONSTITUTION: A wrench body(10) includes a head unit(12) having a circular perforation part(14), and an opening part(16) formed at one side of the perforation part. A screw coupling unit(20) includes an insertion unit rotatably inserted into the inner circumference of the perforation part, and a protrusion unit(26) having a plurality of protrusions(26a). An opening part(28) is formed at one side of the screw coupling unit. A latch(30) is rotatably installed at the wrench body. And, the latch stops the protrusion unit forward or backward, and restricts the rotation of the screw coupling unit. A stopping pin(50) restricts the rotation of the latch by a spring(52).
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