FASTENING MEMBER GRIPPING JIG FOR FASTENER

PURPOSE:To securely carry out the screw fastening work without dropping any fastening member by matching and temporarily fastening the fastening member to an internal thread in the state where the fastening member is gripped by means of a jig when the fastening member is fastened to the internal thr...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: UEHARA HIROAKI, KURANE AKIO
Format: Patent
Sprache:eng
Schlagworte:
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Beschreibung
Zusammenfassung:PURPOSE:To securely carry out the screw fastening work without dropping any fastening member by matching and temporarily fastening the fastening member to an internal thread in the state where the fastening member is gripped by means of a jig when the fastening member is fastened to the internal thread. CONSTITUTION:When a screw 5 is fastened to an internal thread, a jig 10 is retreated in relation to a shaft main body 2 of a screwdriver 1 by an operating part 19, and an engaging part 3 on the tip of the screwdriver 1 is engaged with an engaging part 18 of a rear side protrusion 14, thereby protrusions 13, 14 of a cylinder body 11 are radially and outwardly opened. An engaging groove 8 of a head part 7 of the screw 5 is engaged with the engaging part 3 of the screwdriver 1 with this state, and then the jig 10 is advanced, thereby the engagement of the tip of the screwdriver 1 with the engaging part 18 is released, and the protrusions 13, 14 are closed so as to house the head part 7 of the screw 5 into a housing part 15 of the jig 10. After that, the screw 5 is screwed into the internal thread by rotating the screwdriver 1 two or three times, so as to make the temporary fastening state. Next, the jig 10 is advanced to opened the protrusions 13, 14, thereby the specific fastening work is performed.