FASTENER

• Main Author: HAMADA MASAHIKO
• Format: Patent
• Language: English; Japanese
• Published: 14.01.2021
• 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; PERFORMING OPERATIONS; THERMAL INSULATION IN GENERAL; TRANSPORTING; VEHICLES IN GENERAL; VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR; WEAPONS

To provide a technology capable of more reliably suppressing release of a fastening state by an irregular method, without complicating a fastening work.SOLUTION: A fastener 100 for fastening a fastened member, includes a shaft portion 113 provided with a male screw 113a acting to fasten the fastened member by rotating the same on an axis C, tool action faces 119a which are formed on tool action portions 111, 112 integrally with the shaft portion 113, and on which a tool for rotating the shaft portion 113 is acted, and an outside operation suppressing portion 120 suppressing the rotation of the shaft portion 113 by an operation from the outside of the fastener 100. In the fastener 100, the tool action face 119a on which the tool is acted, is substantially formed into a cylindrical inner face shape.SELECTED DRAWING: Figure 1 【課題】締結作業が煩雑化することを抑止しつつ、非正規の方法による締結状態の解除をより確実に抑制する技術を提供する。【解決手段】被締結部材を締結する締結具１００は、軸線Ｃを中心に回転させることにより被締結部材を締結するように作用する雄ねじ１１３ａが形成された軸部１１３と、軸部１１３と一体の工具作用部１１１，１１２に形成され、軸部１１３を回転させる工具が作用する工具作用面１１９ａと、締結具１００の外方からの操作による軸部１１３の回転を抑制する外方操作抑制部１２０とを有している。この締結具１００において、工具が作用する工具作用面１１９ａは、略円筒内面形状に形成されている。【選択図】図１