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    • 42. 发明授权
    • Belt or chain tensioner for power transmitting system
    • 用于动力传动系统的皮带或链条张紧器
    • US4976661A
    • 1990-12-11
    • US396029
    • 1989-08-21
    • Juji Ojima
    • Juji Ojima
    • F16H7/08F16H7/12
    • F16H7/1281F16H2007/0806
    • An advancement and the advancing state of a tension rod which maintains a belt or a chain in a tension state is maintained by a coil spring. The coil spring deflects against an excess of opposite force from the belt or the chain to go back the tension rod and prevents the excess tension of the belt or the chain.The coil spring having a non-linear characteristic attached within the casing so as to be a range of the use including a changing point of a load deflection characteristic changes the number of active turns of the coil spring at the time of the resonance of the belt or the chain with changing point as the boarder.The above resonance decreases according to the change of the natural frequency of the vibration of the coil spring.The advancement of the tension rod can also be performed by the coil spring formed by the stranded wires.
    • 通过螺旋弹簧维持保持带或链处于张紧状态的张紧杆的前进和前进状态。 螺旋弹簧抵抗来自皮带或链条的过大的相反的力量偏转以拉回拉杆,并防止皮带或链条的过度张力。 作为包括负载偏转特性的变化点的使用范围,具有附接在壳体内的非线性特性的螺旋弹簧,使带的共振时的螺旋弹簧的主动匝数变化 或者以连接点作为边界的链条。 上述共振根据螺旋弹簧振动的固有频率的变化而减小。 拉杆的推进也可以通过由绞线形成的螺旋弹簧来进行。
    • 46. 发明授权
    • Tension providing mechanism
    • 张力提供机制
    • US4466802A
    • 1984-08-21
    • US239990
    • 1981-03-03
    • Juji OjimaKeiichi Suzuki
    • Juji OjimaKeiichi Suzuki
    • F16H7/08F16H7/22F16D65/38F16H7/12
    • F16H7/0848F16H2007/0853F16H2007/0857F16H2007/0891
    • A tension providing mechanism including two shafts, one having an external screw and the other having an internal screw, the shafts being connected by engaging the screwed portions with each other. One of the shafts is supported for axial translation without rotation, and the other shaft is supported for rotation and is restrained from axial sliding. The rotatable shaft includes a torsion spring for applying spring torque in a direction to cause the other shaft to extend in an axial direction against a member, such as a drive chain, in order to increase the tension thereof. A locking mechanism is provided for constraining movement of the rotatable shaft, the locking mechanism being in the form of a lever having one end removably engaged with a split groove provided in the end of the shaft, the other end of the locking mechanism being latched to a projection formed on the case in which the tension providing mechanism is housed.
    • 一种张力提供机构,包括两个轴,一个具有外部螺钉,另一个具有内部螺钉,所述轴通过使所述螺纹部彼此接合而连接。 一个轴被支撑用于轴向平移而不旋转,另一个轴被支撑以便旋转并被限制在轴向滑动。 可旋转轴包括扭转弹簧,用于在使另一轴沿轴向方向抵靠诸如驱动链的构件的方向上施加弹簧扭矩,以增加其张力。 提供一种用于限制可旋转轴的运动的锁定机构,该锁定机构为杠杆的形式,其一端可拆卸地与设置在该轴的端部中的一个开口槽接合,该锁定机构的另一端被锁定到 形成在容纳张力提供机构的壳体上的突起。