Blade-type tensioner
    62.
    发明公开
    Blade-type tensioner 审中-公开
    Kettenspannvorrichtung mit Blattfeder

    公开(公告)号:EP1338827A2

    公开(公告)日:2003-08-27

    申请号:EP03251027.3

    申请日:2003-02-20

    IPC分类号: F16H7/08

    CPC分类号: F16H7/08 F16H2007/0804

    摘要: A blade-type tensioner (1) for applying tension to a chain comprising a base (4), an arcuately shaped blade shoe (2) having a chain sliding face (2a), a spring (3) provided on a back side of the blade shoe, and a guide member. The blade shoe has a proximal end portion (20) and a distal end portion (21), where the proximal end portion is swingably supported on the base, and the distal end portion is slidably supported on a slide plate (41) of the base. The slide plate is arcuately shaped to form a concavely arcuate arc face (41a) on an opposite side of the distal end portion of the blade shoe, and the distal end portion of the blade shoe has a convexly arcuate arc face (21c) corresponding to the concavely arcuate arc face of the slide plate. The distal end portion of the blade shoe is guided by a self-aligning action of the concavely arcuate arc face of the slide plate in such a way that the distal end portion is centrally positioned in a lateral direction on the slide plate. The guide member (6) comprises a pair of guide portions (6'a) formed integrally on opposite side edges of the distal end portion of the blade shoe, and hang below opposite side ends of the slide plate.

    摘要翻译: 一种用于向链条施加张力的叶片式张紧器(1),包括一个基部(4),一个具有链条滑动面(2a)的弧形叶片(2),设置在该背面的弹簧(3) 刀片鞋和引导构件。 叶片靴具有近端部分(20)和远端部分(21),其中基端部可摆动地支撑在基部上,并且远端部分可滑动地支撑在基部的滑板(41)上 。 滑动板是弧形的,以在叶片的远端部分的相对侧上形成凹弧形的弧形面(41a),并且叶片的前端部分具有凸形弧形的面(21c),其与 滑板的凹弧形弧面。 叶片靴的远端部分通过滑动板的凹弧形弧面的自对准作用被引导,使得前端部分在滑动板上沿横向方向居中定位。 引导构件(6)包括一对导向部分(6'a),该导向部分整体地形成在叶片的前端部分的相对侧边缘上,并且在滑动板的相对侧端部下方悬挂。

    Hydraulic tensioner
    63.
    发明公开
    Hydraulic tensioner 审中-公开
    液压张紧器

    公开(公告)号:EP1323948A1

    公开(公告)日:2003-07-02

    申请号:EP02258744.8

    申请日:2002-12-18

    IPC分类号: F16H7/08

    摘要: A hydraulic tensioner that decreases the number of components, secures an adequate backlash, and prevents backward movement of a plunger. The hydraulic tensioner includes a hollow plunger having rack teeth formed on a portion of an outer circumferential surface, slidably received in a bore of the housing, where the plunger has an inner space to form a fluid chamber with the bore. A roller housing portion, having an inclined surface, located in the housing, receives a wedge-shaped roller having a ratchet portion adapted to engage with the rack teeth of the plunger and a second side surface. The wedge-shaped roller being slidable along the inclined surface of the roller housing portion in a direction crossing an axial centerline of the plunger. The hydraulic tensioner further includes a first spring biasing the plunger in a protruding direction, and a second spring biasing the roller such that the roller moves along the inclined roller surface of the roller housing portion. A "wedge-effect" prevents the plunger from moving backwards.

    摘要翻译: 液压张紧器可减少部件数量,确保适当的间隙并防止柱塞向后移动。 液压张紧器包括具有形成在外圆周表面的一部分上的齿条齿的中空柱塞,所述齿条齿可滑动地容纳在壳体的孔中,其中柱塞具有内部空间以与孔形成流体腔室。 位于壳体中的具有倾斜表面的滚轮壳体部分容纳楔形滚轮,该楔形滚轮具有适于与柱塞的齿条齿啮合的棘轮部分和第二侧表面。 所述楔形辊沿与所述柱塞的轴向中心线交叉的方向沿着所述辊容纳部的倾斜表面滑动。 液压张紧器还包括第一弹簧和第二弹簧,第一弹簧将柱塞在突出方向上偏压,第二弹簧偏压辊,使得辊沿着辊壳体部分的倾斜辊表面移动。 “楔效应”防止柱塞向后移动。