| 摘要 |
<p>A bolt with an energy-reserving and self-locking device includes a stud and a nut, wherein an upper locking spring is engaged with the inner wall of the nut. A fixing slot and a transversal disengaging hole are provided on the upper surface and the lower part of the nut, respectively. The two ends of the upper lock-spring are secured into the fixing slot and the transversal disengaging hole, respectively. The stud may be formed with two portions with different diameters, and the threads of the two portions form a uniform helical line. A lower lock-spring is engaged with the lower part of the stud which has a less diameter. The nut may contain a lower nut which has the same thread as that of the nut. A middle lock-spring is engaged with the inner wall of the lower nut. An energy-reserving spring includes an inner locking spring which acts as a self-locking spring, and an outer torque-spring which exerts a thrust, and it is engaged with the stud.</p> |
