TIGHTENING TORQUE CONTROL TOOL AND COMBINATION OF TIGHTENING TORQUE CONTROL TOOL AND FASTENER

To provide a novel tightening torque control tool that can, even when the tightening torque control tool falls with an upper end surface oriented downward and collides with a floor surface, prevent cracks from being generated by impact of the collision, from an upper end surface of the tightening to...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	KOBAYASHI RYUTA, HASHIMOTO KATSUMI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	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 HAND TOOLS HEATING LIGHTING MANIPULATORS MECHANICAL ENGINEERING PERFORMING OPERATIONS PORTABLE POWER-DRIVEN TOOLS THERMAL INSULATION IN GENERAL TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FORFASTENING, CONNECTING, DISENGAGING OR HOLDING TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	To provide a novel tightening torque control tool that can, even when the tightening torque control tool falls with an upper end surface oriented downward and collides with a floor surface, prevent cracks from being generated by impact of the collision, from an upper end surface of the tightening torque control tool toward an upper end corner portion on downstream side viewed in a rotational direction of tightening, of a through-opening or a recessed portion formed on the outer peripheral surface of the tightening torque control tool.SOLUTION: An upper end surface 34 of a tightening torque control tool 2 is provided with a plurality of ridges 36 arranged at intervals in the circumferential direction, or a ridge extending in a circumferential direction.SELECTED DRAWING: Figure 1 【課題】締付トルク管理具がその上端面を下方にして落下し床面と衝突した場合であっても、かかる衝突による衝撃によって締付トルク管理具の上端面から外周面に形成された貫通開口或いは没入部の締付回転方向に見た下流側の上端角部に向かって亀裂が生じることが防止される、新規の締付トルク管理具を提供すること。【解決手段】締付トルク管理具２の上端面３４に周方向に間隔をおいて複数個の突条３６、或いは上端面の外周縁部に周方向に延びる突条を配設する。【選択図】図１