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    • 3. 发明公开
    • Drive shaft
    • Antriebswelle。
    • EP0367199A2
    • 1990-05-09
    • EP89120131.1
    • 1989-10-30
    • KOYO SEIKO CO., LTD.
    • Makase, Keiichirou c/o Koyo Seiko Co., Ltd.
    • B21B35/14
    • B21B35/142F16D3/06Y10T403/32991
    • A drive shaft comprises a first joint member (1), a first tubular shaft (2) connected on one side with the first joint member, a second joint member (3), a second tu­bular shaft (4) connected on one side with the second joint member and coupled on the other side with the other side of the first tubular shaft so as to transmit torque and slide axially, and a coiled spring assembly (20) provided in the coupling section of the two tubular shafts for biasing the two tubular shafts each other axially oppositely. The coiled spring assembly is composed of a plurality of coiled spring units (A,B,C,D) and at least one spacer member (9) which is inter­posed between the two coiled spring units and has a pair of receiving portions with which the ends of the two coiled spring units are fitted so that the two coiled spring units are kept out of contact with the inner peripheral surface of one of the two tubular shafts forming the coupling section and an outer contact portion held in contact with the inner peripheral surface of the one tubular shaft. Since the to­tal amount of flexure of the coiled spring assembly is limited due to the use of a plurality of coiled spring units and the individual coiled spring units are radially positioned so as to contact with the inner peripheral surface of the one tubular shaft, during rotational motion the coiled spring means is prevented from collid­ing with the inner peripheral surface of the one tubular shaft and the like, result­ing in no generation of large noise and vibration during rotational motion.
    • 驱动轴包括第一接头构件(1),与第一接头构件在一侧连接的第一管状轴(2),第二接头构件(3),一侧连接的第二管状轴(4) 第二联接构件,并且在另一侧与第一管状轴的另一侧耦合以便传递扭矩并且轴向滑动;以及螺旋弹簧组件(20),设置在两个管状轴的联接部分中,用于偏压两个管状 轴彼此轴向相对。 螺旋弹簧组件由多个螺旋弹簧单元(A,B,C,D)和至少一个隔离构件(9)组成,隔离构件插入在两个螺旋弹簧单元之间,并具有一对接收部分, 两个螺旋弹簧单元的端部被装配成使得两个螺旋弹簧单元与形成联接部的两个管状轴中的一个的内周面保持脱离接触,并且外接触部保持与内周面 的一个管状轴。 由于使用多个螺旋弹簧单元,螺旋弹簧组件的弯曲总量受到限制,并且单个螺旋弹簧单元在旋转期间径向定位成与一个管状轴的内周表面接触 使得螺旋弹簧装置能够与一个管状轴等的内周面碰撞,从而在旋转运动期间不会产生大的噪音和振动。