| 摘要 |
PURPOSE: A flexible bolt is provided to safely couple a lamp traditional Korean hat with a lamp, since the inner and outer surfaces of a spring bolt are strongly fixed in a space between a nut member and a bolt member. CONSTITUTION: A flexible bolt(1) comprises a net member and a bolt member. The net member is made of a cylindrical net member(5) and a pressure nut(6). A nut groove(3) is formed on the inner circumference of the net member. The nut groove engages with a spiral projection(2). A screw thread is formed on the outer surface of the nut body. The bolt member is made of a bolt body(9) and a pressure bolt(10) screwed with the inner surface of the bolt body. A bolt groove(7) is formed on the outer surface of the bolt body.
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