Screw

• Main Authors: FANG JIANNAI, JIANG XIANGHU, DONG JIANLIANG
• Format: Patent
• Language: Chinese; English
• Published: 17.12.2014
• 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 screw. According to the technical scheme, the screw is characterized by comprising a screw body and a screw cap, the screw cap comprises a first screw cap body and a second screw cap body, one end of the first screw cap body is fixedly connected with the screw body, a rotating disc and a driving disc are arranged at the end, away from the screw body, of the first screw cap body, the rotating disc is hinged to the end, away from the screw body, of the first screw cap body, fan-shaped bosses are arranged on the side, away from the first screw cap body, of the rotating disc, an inclined plane is arranged on the side, away from the rotating disc, of each fan-shaped boss, the tooth surface of the circumferential surface of the driving disc is matched with the tooth surface of the rotating disc, a cavity is formed inside the second screw cap body, a through groove is formed in the circumferential side wall of the second screw cap body, the side, close to the first screw cap body, of th