BOLT WITH AXIAL FORCE DISPLAY FUNCTION

• Main Authors: SASAGAWA HIROYUKI, MATSUO RYUSEI, TSUZUKI MITSUMASA, WATANABE MASATO, SADANARI MASANORI
• Format: Patent
• Language: English; Japanese
• Published: 02.04.2024
• 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 prevent a machine system from being damaged due to looseness and excessive/deficient tightening of a bolt.SOLUTION: Normally, it is visually determined the axial force of a bolt, which cannot be seen from the outside, is appropriate or not by reducing the rigidity of a bolt head with a slit or the like, and increasing the displacement of a width of the slit or the like, and displaying the axial force with a mechanical displacement increase mechanism.SELECTED DRAWING: Figure 6 【課題】ボルトのゆるみ、締め付けの過不足により機械システムが破損することを防止することを目的としている。【解決手段】通常、外見では見えないボルトの軸力をボルト頭の剛性をスリット等により低下させ、そのスリット等の幅などの変位を拡大し、さらに機械的変位拡大機構を用いて表示させることによりボルトの軸力が適正かどうか目視で判断する。【選択図】図６