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    • 4. 发明授权
    • Belt tensioner and belt exchanging method of belt tensioner
    • 皮带张紧器和皮带张紧器的皮带交换方法
    • US08167749B2
    • 2012-05-01
    • US12180590
    • 2008-07-28
    • Tomomi Miyamoto
    • Tomomi Miyamoto
    • F16H7/14
    • F16H7/24F16H7/1281
    • A tensioner arm comprises a tool-engagement portion for engaging with a tensioner-arm rotation tool, and a jig-holding portion which has a through hole for accepting a tensioner-arm fixation bar jig being inserted thereinto from above at a portion of the tensioner arm extending upward from the base end portion. A bearing case comprises a contact face portion which is provided at a face located below the jig-holding portion of the bearing case so as to accept the bar jig being inserted into the through hole of the tensioner arm, and an engagement stair portion which is provided at the contact face portion so as to engage with the bar jig such that move of the tensioner arm toward the belt by the biasing mechanism is restricted. A belt tensioner which enables an easy belt exchanging even by a single worker without detaching surrounding components of the engine can be provided.
    • 张紧臂包括用于与张紧器臂旋转工具接合的工具接合部分和夹具保持部分,其具有用于接收张紧器臂固定杆夹具的通孔,所述张紧器臂固定杆夹具在张紧器的一部分处从上方插入 臂从基端部向上延伸。 轴承箱包括接触面部分,其设置在位于轴承箱的夹具保持部分下方的面上,以便接纳插入到张紧器臂的通孔中的杆夹具和接合台阶部分 设置在接触面部分处以与杆夹具接合,使得张紧器臂通过偏置机构朝向带的移动受到限制。 可以提供一种皮带张紧器,其能够在不分离发动机的周围部件的情况下使单个工作人员容易地进行皮带交换。