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2. 发明授权

US6165091A Rotary hydraulic automatic tensioner 有权
标题翻译：旋转液压自动张紧器
公开(公告)号：US6165091A
公开(公告)日：2000-12-26
申请号：US199557
申请日：1998-11-25
申请人： Flaviu V. Dinca , Daryl D. Musselman , Larry J. Ferriman , Klaus K. Bytzek
发明人： Flaviu V. Dinca , Daryl D. Musselman , Larry J. Ferriman , Klaus K. Bytzek
IPC分类号： F16F9/14 , F16H7/08 , F16H7/12 , F16H7/10
CPC分类号： F16F9/145 , F16H7/1236 , F16H2007/081 , F16H2007/084 , F16H2007/0844 , F16H2007/0861
摘要： Disclosed is a tensioner for use in an engine. The tensioner comprises a fixed structure that fixes to the engine. A movable structure is mounted for movement relative to the fixed structure in a belt tensioning and opposite directions. A pulley member has a belt engaging surface that engages with the belt. One of the fixed and movable structures has an interior surface defining a fluid chamber containing fluid and the other includes a chamber dividing structure. The chamber dividing structure defines first and second chamber portions on opposing sides thereof. A biasing element biases the movable structure in the tensioning direction to tension the belt. Relative movement of the movable structure in the tensioning direction displaces fluid from the first to the second chamber portion and increases fluid pressure in the first chamber portion and decreases fluid pressure in the second chamber portion, and the reverse occurs during movement of the movable structure in the opposite direction. The chamber dividing structure allows the fluid to flow between the chamber portions in a restricted manner so as to yieldingly resist the relative movement of the movable structure and thereby dampen such movement. The chamber dividing structure is constructed such that the fluid flow restriction is greater when the movable structure moves in the opposite direction than in the tensioning direction, thereby providing the movable structure with greater resistance to movement in the opposite direction than in the tensioning direction.
摘要翻译：公开了一种用于发动机的张紧器。张紧器包括固定在发动机上的固定结构。可移动结构被安装成在张紧张力和相反方向上相对于固定结构移动。滑轮构件具有与带接合的皮带接合表面。固定和可移动结构中的一个具有限定包含流体的流体室的内表面，另一个包括室分隔结构。腔室分隔结构在其相对侧上限定第一和第二腔室部分。偏压元件在张紧方向上偏压可移动结构以拉紧带。可移动结构在张紧方向上的相对运动使流体从第一腔室部分移动到第二腔室部分，并且增加第一腔室部分中的流体压力并降低第二腔室部分中的流体压力，并且在可移动结构体的运动期间发生相反相反的方向。腔室分隔结构允许流体以限制的方式在腔室部分之间流动，以便有效地抵抗可移动结构的相对运动，从而抑制这种运动。腔室分隔结构被构造成使得当可移动结构沿与张紧方向相反的方向移动时，流体流动限制较大，从而为可移动结构提供比在张紧方向上相反方向更大的阻力运动。

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