CONNECTOR DEVICE FOR CONSTRUCTION MACHINE

An internally threaded hole (17) of a cap nut (15), with which an external thread (6C) of a mounting bolt (6) is threadedly engaged, is formed as a bottomed threaded hole. Its length dimension is set to a dimension (L1) which makes it possible to secure an axial space (18) with respect to a distal e...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: NISHIKAWA SHINJI, SHIMAMURA TADATOSHI
Format: Patent
Sprache:eng ; fre ; ger
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Beschreibung
Zusammenfassung:An internally threaded hole (17) of a cap nut (15), with which an external thread (6C) of a mounting bolt (6) is threadedly engaged, is formed as a bottomed threaded hole. Its length dimension is set to a dimension (L1) which makes it possible to secure an axial space (18) with respect to a distal end portion (6C1) of the external thread (6C) when the external thread (6C) of the mounting bolt (6) is tightened until a weakened portion (6D) is fractured. Accordingly, in a case where the mounting bolt (6) is fractured at the weakened portion (6D) by an excessive tightening torque, the fractured external thread (6C) on the distal end side can be left in the internally threaded hole (17) in a threadedly engaged state. In consequence, the external thread (6C) of the mounting bolt (6) remaining in the internally threaded hole (17) can be easily loosened by fingertips and removed.