Expansion bolt

The utility model relates to an expansion bolt in the field of bolts, which comprises a screw and an expansion rubber sleeve, external threads are arranged on the surface of the screw, internal threads matched with the external threads are arranged on the inner wall of the expansion rubber sleeve, a...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	YANG FANGYU, ZHENG MIN, CHEN LUCHAO, YIN SIYUAN
Format:	Patent
Sprache:	chi ; eng
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 HEATING LIGHTING MECHANICAL ENGINEERING THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	The utility model relates to an expansion bolt in the field of bolts, which comprises a screw and an expansion rubber sleeve, external threads are arranged on the surface of the screw, internal threads matched with the external threads are arranged on the inner wall of the expansion rubber sleeve, and the expansion bolt is characterized in that more than four expansion heads are arranged at one end, far away from the screw, of the expansion rubber sleeve; the expansion heads gradually contract towards the interior of the axis of the expansion rubber sleeve from the ends close to the screw to the ends away from the screw, a partition groove is formed between every two adjacent expansion heads, sharp tooth parts used for being tightly meshed with the inner wall of a mounting hole are arranged on the outer surfaces of the expansion heads, and a metal shell is arranged on the surface of the expansion rubber sleeve. More than four elastic sheet parts are arranged at one end, close to the expansion head, of the met