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2. 发明申请

US20050115793A1 Actuating drive with a wrap spring arrangement 失效
标题翻译：带弹簧布置的驱动
公开(公告)号：US20050115793A1
公开(公告)日：2005-06-02
申请号：US10998371
申请日：2004-11-29
申请人： Martin Fluckiger , Thomas Walter , Matthias Muller , Peter Fenn
发明人： Martin Fluckiger , Thomas Walter , Matthias Muller , Peter Fenn
IPC分类号： F16D41/20 , F16D67/00
CPC分类号： F16D51/02 , F16D41/206 , F16D67/00
摘要： A drive unit is in working connection with a power takeoff by way of a wrap spring, which has a predetermined number of turns between its two ends and which serves as a load torque interlock. The wrap spring has a first actuating area assigned to a selected direction of rotation on at least one of its two ends and a second actuating area assigned to the opposite direction of rotation, where the first actuating area can be brought into nonrotatable working connection with the drive unit and the second actuating area into nonrotatable working connection with the power takeoff. By the application of a drive torque produced by the drive unit on the first actuating area, a first change in the diameter of the turns in the direction away from a braking device can be obtained, with the result that the frictional connection between the turns and the braking device is at least weakened. By the absorption of a restoring torque which originates from the power takeoff and acts in the opposite direction of rotation on the second actuating area after the drive has been turned off, a second change in the diameter of the turns in the direction toward the braking device can be obtained, with the result that the frictional connection between the turns and the braking device is increased.
摘要翻译：驱动单元通过卷绕弹簧与动力输出工作连接，该卷簧在其两端之间具有预定数量的匝数，并且用作负载扭矩互锁。卷绕弹簧具有在其两个端部中的至少一个上分配给所选择的旋转方向的第一致动区域和分配给相反旋转方向的第二致动区域，其中第一致动区域可以被引导到不可旋转的工作连接驱动单元和第二启动区域成为具有动力输出的不可旋转的工作连接。通过将由驱动单元产生的驱动扭矩施加在第一致动区域上，可以获得在远离制动装置的方向上的匝的直径的第一变化，结果是匝之间的摩擦连接制动装置至少变弱。通过吸收来自动力输出的恢复扭矩并且在驱动器已经被关闭之后在第二致动区域上的相反旋转方向上作用，在朝向制动装置的方向上的匝的直径的第二变化结果是匝和制动装置之间的摩擦连接增加。

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