| 摘要 |
<p>A self-locking screw in which a deep slit is formed without requiring sophisticated machining techniques or skills, and of which the locking effect is enhanced because the flanks of the screw thread are easily deformed. A slit is cut into the top of the screw thread (2) between the two flanks (21), and the root of the thread groove is a wide recess (22, 23) of a shape scraped inward from the extended faces of the flanks. By providing the wide recess, the slit at the top of the screw thread can be deep, and the flanks are easily elastically deformed, resulting in an enhanced spring-back effect. Accordingly, the effect to prevent the screw from loosening is enhanced. <IMAGE></p> |
