Screw with multi-included-angle threads

• Main Authors: SU GUOCAI, SU ZHENRONG
• Format: Patent
• Language: Chinese; English
• Published: 04.04.2023
• 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 invention discloses a screw with multi-included-angle threads, which is mainly characterized in that a thread part of the screw is designed into a first included angle, a second included angle, a third included angle and the like, the first included angle is 70-75 degrees, the second included angle is 37-43 degrees, the third included angle is 20-23 degrees and the like, and a plurality of grooves are concavely formed in a tooth peak of the thread part. Therefore, when the thread part is locked, the thread part can be rapidly and sharply cut and locked through the third included angle matched with the groove design, and the thread part can be extruded and expanded to an object in the progressive locking process under the design of the first included angle and the second included angle, so that the thread part can continuously enter the object subsequently, the locking resistance is reduced, and the service life of the thread part is prolonged. Therefore, the quick locking effect in use is achieved. 本发明公开了