公开(公告)号：US06899650B2

公开(公告)日：2005-05-31

申请号：US10383516

申请日：2003-03-10

申请人： Kazuma Okuda ,  Katsuya Minami ,  Shigeru Aoki ,  Tadashi Fujiwara ,  Shogo Yonemoto

发明人： Kazuma Okuda ,  Katsuya Minami ,  Shigeru Aoki ,  Tadashi Fujiwara ,  Shogo Yonemoto

IPC分类号： F02B67/06 ,  F16H7/08 ,  F16H7/12 ,  F16H7/22

CPC分类号： F16H7/129 ,  F16H2007/0806 ,  F16H2007/0812 ,  F16H2007/0859

摘要： A hydraulic automatic tensioner for adjusting the tension of a bell includes a first member with a piston formed integrally, a second member combined with the first member and axially movable relative to the first member, a cylinder formed integrally with the second member, together defining a fluid-reservoir chamber for hydraulic fluid, axially slidably receiving the piston, and a spring pushing the members apart. The piston and cylinder form a pressure chamber filled with hydraulic fluid. The second member has a leak passage through which fluid flows from the pressure chamber into the fluid-reservoir chamber. A control valve is placed in the leak passage, inhibiting flow of fluid from the pressure chamber into the fluid-reservoir chamber. A control device moves the control valve to close the leak passage when activated and makes it ineffective when deactivated so that the pressure chamber communicates with the fluid-reservoir chamber via the leak passage.

摘要翻译： 一种用于调节喇叭张力的液压自动张紧装置，包括具有一体形成的活塞的第一构件，与该第一构件组合并与该第一构件可轴向移动的第二构件，与该第二构件一体形成的圆筒， 用于液压流体的流体储存室，轴向可滑动地接收活塞，以及弹簧推动构件分开。 活塞和气缸形成一个充满液压油的压力室。 第二构件具有泄漏通道，液体通过该通道流体从压力室流入流体储存室。 控制阀被放置在泄漏通道中，从而抑制流体从压力室流入流体储存室。 控制装置在启动时移动控制阀以关闭泄漏通道，并且在停用时使其无效，使得压力室经由泄漏通道与流体储存室连通。