| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a stepwise releasing mechanism operating by small releasing torque for a rolling stock hand brake. SOLUTION: The stepwise releasing mechanism 10 includes a shaft 20 rotating around an axis extended in the longitudinal direction, a clutch flange part 30 which is arranged at an intermediate part of both end parts of the shaft 20 and has a clutch surface 40, a sleeve 50 which is arranged and screwed concentrically with the shaft 20, is rotated together with the shaft 20 and is provided with a clutch collar 60 having a clutch surface 70 opposed to the clutch surface 40 of the clutch flange part 30, a surface 80 with a male screw of the shaft 20 engageable to a surface 90 with a female screw of the sleeve 50, ratchet wheels 100 which are fitted around the shaft 20 and have clutch surfaces 100 arranged oppositely at positions engaged to the clutch flange part 30 and the clutch collar part 60, respectively, and a pinion 120 journalled by the shaft 20 at a position adjacent to the sleeve 50.</p> |
