FASTENING MEMBER COMPRISING FRICTION COEFFICIENT STABILIZER DISCHARGE FUNCTION

• Main Authors: USAMI SHO, TSUNODA YUKI, MORI TOSHIYA
• Format: Patent
• Language: English; Japanese
• Published: 20.01.2023
• 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 fastening member comprising a friction coefficient stabilizer discharge function capable of efficiently discharging a friction coefficient stabilizer remaining on a bearing surface to prevent rotational looseness, and capable of preventing reduction in axial force due to depression of an object to be fastened.SOLUTION: A fastening member having a flat bearing surface 11 formed with circumferential grooves 12 for discharging a friction coefficient stabilizer remaining on the bearing surface. The circumferential grooves 12 are formed so as to exist on an arbitrary radial line. It is preferable to form a width of the portion closer to the outer periphery to be wider than a width of the portion closer to the inner periphery.SELECTED DRAWING: Figure 1 【課題】座面に残留する摩擦係数安定剤を効率よく排出し回転ゆるみの防止を図るとともに、被締結物の陥没による軸力低下も防止することができる摩擦係数安定剤排出機能を備えた締結部材を提供する。【解決手段】座面に残留する摩擦係数安定剤を排出するための円周溝１２を平坦な座面１１に形成した締結部材である。円周溝１２は、任意の半径線上に複数本が存在するように形成されている。外周寄りの部分の幅を内周寄り部分の幅よりも広く形成することが好ましい。【選択図】図１