| 摘要 |
An anti-loosening cylindrical threaded part comprises an internal threaded part (1) and an external threaded part (2). A cylindrical internal thread (3) is arranged in an inner hole of the internal threaded part (1), a cylindrical external thread (4) is arranged on a screw of the external threaded part (2), the screw of the external threaded part (2) has a cylindrical surface (6) parallel to a longitudinal center axis (5) of the external thread (4), and an external diameter of the cylindrical surface (6) is less than a maximum external diameter of the external thread (4). Surfaces of the internal thread (3) and the external thread (4) and the cylindrical surface (6) are not covered with anti-loosening materials. After the internal thread and the external thread are mutually tightened, the cylindrical surface (6) and a crest of the internal thread (3) form a mutually close contact structure, that is, a horizontal locking structure; therefore, loosening can be effectively prevented between the cylindrical internal threaded part and the cylindrical external threaded part without longitudinal contractility of the threaded part and a workpiece, and the present invention is suitable for loosening prevention in various connections of the cylindrical threaded parts, such as rigid fastening connection and elastic connection and the like, and the loosening prevention is stabler. |
