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1. 发明申请

US20030171179A1 Hydraulic automatic tensioner and power transmitting mechanism 失效
标题翻译：液压自动张紧器和动力传递机构
公开(公告)号：US20030171179A1
公开(公告)日：2003-09-11
申请号：US10383516
申请日：2003-03-10
申请人： HONDA GIKEN KOGYO KABUSHIKI KAISHA
发明人： Kazuma Okuda , Katsuya Minami , Shigeru Aoki , Tadashi Fujiwara , Shogo Yonemoto
IPC分类号： F16H007/08 , F16H007/22 , F16H007/12
CPC分类号： F16H7/129 , F16H2007/0806 , F16H2007/0812 , F16H2007/0859
摘要： A hydraulic automatic tensioner for adjusting the tension of an endless belt in a power transmitting mechanism for transmitting power to engine accessories of an internal combustion engine through the belt comprises: a fixed first member (11), a piston (PS) formed integrally with the first member (11), a movable second member (12) coaxially combined with the first member (11) so as to be axially movable relative to the first member (11), a cylinder (CY) formed integrally with the second member (12), defining a fluid-reservoir chamber (R) for storing a hydraulic fluid together with the first member (11), and provided with a leak passage (20), axially slidably receiving the piston (PS), a spring (S) pushing the first and the second member (11, 12) away from each other. The piston (PS) and the cylinder (CY) form a pressure chamber (P) filled with the hydraulic fluid. The second member (12) is provided with a leak passage ((20) through which the hydraulic fluid flows from the pressure chamber (P) into the fluid-reservoir chamber (R). A control valve (V) is placed in the leak passage (20) and inhibits the flow of the hydraulic fluid from the pressure chamber (P) through the leak passage (20) into the fluid-reservoir chamber (R). A control device (13) makes the function of the control valve (V) effective to close the leak passage (20) when activated and makes the function of the control valve (V) ineffective when deactivated so that the pressure chamber (P) is able to communicate with the fluid-reservoir chamber (R) by means of the leak passage (20). The tensioner is capable of properly coping with the sudden change of the tension of the belt to ensure that power is always surely transmitted.
摘要翻译：一种用于调节动力传递机构中的环形带的张力的液压自动张紧器，用于通过皮带将动力传递到内燃机的发动机附件，包括：固定的第一构件（11），与第一构件（11），与第一构件（11）同轴地组合以便能够相对于第一构件（11）可轴向移动的可动第二构件（12），与第二构件（12）一体形成的气缸（CY）），限定用于与第一构件（11）一起存储液压流体的流体储存室（R），并且设置有轴向可滑动地接收活塞（PS）的泄漏通道（20），弹簧（S）推动第一和第二构件（11,12）彼此远离。活塞（PS）和气缸（CY）形成充满液压油的压力室（P）。第二构件（12）设置有泄漏通道（20），液压流体通过该泄漏通道（20）从压力室（P）流入流体储存室（R），控制阀（V）通道（20），并且阻止液压流体从压力室（P）通过泄漏通道（20）流入流体储存室（R）中，控制装置（13）使控制阀 V）在被激活时有效地关闭泄漏通道（20），并且当停用时使得控制阀（V）的功能无效，使得压力室（P）能够通过装置与流体储存室（R）连通的泄放通道（20），张紧器能够适当地应对皮带张力的突然变化，以确保电源总是可靠地传递。

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