NUT LOCKING STRUCTURE

• Main Author: KAWAMURA TAKAHIDE
• Format: Patent
• Language: English
• Published: 24.06.2013
• Subjects: BLASTING; DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS ORMACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS,CLIPS, WEDGES, JOINTS OR JOINTING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; THERMAL INSULATION IN GENERAL; WEAPONS

PROBLEM TO BE SOLVED: To provide a nut locking structure that can attach a locking device to an article with good workability regardless of nut sizes and minutely positioning locking places.SOLUTION: The nut locking structure includes a shaft, a nut, a first ring plate, and a case. A male screw is formed on the shaft and a cut-out for a detent part is provided on the tip side of the male screw for locking. The nut has a female screw spirally fitting on the internally circumferential surface of the male screw, and an engaging trench is provided on the outer peripheral surface. A first ring plate has a protrusion on the inner circumferential surface that are engaged with the cut-out, and the shaft is inserted thereinto. The case is fixed to the nut through an engagement pawl that are engaged with the engaging trenches, and supports the outer peripheral surface of the first ring plate. The first ring plate and case allow a position in the turning direction of the ring plate to the case to be controlled, and have a positioning means that at least regulates the turning of the first ring plate and case in the direction where the nut is loosened.