| 摘要 |
A synchronous braking system, comprising a seat, a gliding unit, two primary cables, a secondary cable, a driving element, and a blocking device. The gliding unit is mounted on the seat and, gliding thereon in a linear movement. The two primary cables have a far ends that drive the linear movement of the gliding unit. The secondary cable has two ends that are connected with two brakes. The driving element is mounted on the gliding unit, having a roll, with the secondary cable running over the roll and, when pulled aside by the driving element, driving the two brakes, while compensating nonuniform braking forces by a longitudinal movement. The blocking device is tightly fastened to the secondary cable, restricting the longitudinal movement of the secondary cable to a maximum displacement, so that, if one of the two ends of the secondary cable breaks, with an unbroken end remaining, the unbroken end will still exert a braking force.
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