Butterfly nut

• Main Authors: FANG JIANNAI, JIANG XIANGHU, DONG JIANLIANG
• Format: Patent
• Language: Chinese; English
• Published: 10.09.2014
• 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

The utility model discloses a butterfly nut which comprises a fixed part provided with a threaded through hole and lateral lugs located on the two sides of the fixed part, wherein the fixed part is in the shape of a circular truncated cone, the circular truncated cone-shaped fixed part comprises a large end face and a small end face, each lateral lug comprises a connecting part and a control part which are integrally arranged, the cross section of each control part is rectangular, two positioning grooves are formed in the small end face of the fixed part, the size and shape of each positioning groove are matched with those of the cross section of each control part, the two positioning grooves are symmetrical about the center line of the fixed part, and the two lateral lugs are detachably arranged in the corresponding positioning grooves respectively. According to the butterfly nut with the lateral lugs detachable, the interference between the lateral lugs and other adjacent parts is avoided on the premise tha