TELESCOPIC MOTION BOLT

• Main Author: KOYAMA ISAO
• Format: Patent
• Language: English; Japanese
• Published: 19.09.2019
• 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

To provide a bolt that can positively prevent looseness.SOLUTION: Telescopic motion bolts (1, 2, 3, 4) comprise a movable part 1 having threads 1a to 1g at a cylindrical surface of a first slant-cut column having a first opposing surface S1 as a cut slant surface; a fixing part 2 in which threads 2a to 2g that can be continuous to the threads 1a to 1g of the movable part 1 at the cylindrical surface of the first slant-cut column with a second opposing surface S2 opposing against the first opposing surface S1 through a variable gap acting as a cut slant surface, the fixing part forming a substantial column-like shape in combination with the movable part 1; and a gap displacement mechanism 4 for moving the movable part 1 in relation to the fixing part 2 along a direction of approximate column-like shafts constituted by the first and second slant-cut columns and displacing the variable gap.SELECTED DRAWING: Figure 1 【課題】緩みを確実に防止できるボルトを提供する。【解決手段】伸縮ボルト（１，２，３，４）は、第１の対向平面Ｓ１を切り欠き斜面とする第１の斜切円柱の円筒面にネジ山１ａ〜１ｇが設けられた可動部１と、第１の対向平面Ｓ１に可変ギャップを介して対向する第２の対向平面Ｓ２を切り欠き斜面とする第１の斜切円柱の円筒面に可動部１のネジ山１ａ〜１ｇと連続可能なネジ山２ａ〜２ｇが設けられると共に可動部１と組み合わせて略円柱状をなす固定部２と、第１及び第２の斜切円柱が構成する略円柱状の軸の方向に沿って可動部１を固定部２に対して相対的に移動して可変ギャップを変位するギャップ変位機構４と、を備える。【選択図】図１