| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid leak sensor easily detachable from a submerged surface and stably mountable on the submerged surface. SOLUTION: When a lower end opening of an axial through hole 14 is put on the tip of a bolt B and a translucent member 10 is pressed downward, a projection 15B inside a holding cylinder part 15 is rust-jointed on the circumferential surface on the tip side of the bolt B, deformed elastically to the circumferential surface side of the holding cylinder part 15, and simultaneously allows insertion of the bolt B. By the elastic deformation of the projection 15B, the circumferential surface of a region corresponding thereto is slightly swelled. Then, a lower end opening of a clamping member 17 is put on the tip of the holding cylinder part 15, and the clamping member 17 is pressed downward. The clamping member 17 is guided by a tapered surface 15A of the holding cylinder part 15 to start being interfitted with the circumferential side of the holding cylinder part 15, and, when being pressed to the inside furthermore, moved aboard on the swelled circumferential surface to thereby generate a force for clamping the holding cylinder part 15. Therefore, the soft holding cylinder part 15 and the projection 15B are elastically deformed in the crushed state by the circumferential surface of the hard bolt B and the inner circumferential surface of the similarly hard clamping member 17, and thereby the translucent member 10 is fixed on the bolt B in the loosening-stop state.
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