| 摘要 |
In a slow-acting rotary shaft device, a shaft, which rotatably supports a second member, includes a hollow shaft body latched to a first member inrotatably, a cap member outwardly inserted on an end portion of the shaft body rotatably and latched to the second member inrotatably, a torsion bar which has one end latched with the shaft body and another end latched with a cap member, and a viscous grease enclosed between the shaft body and cap members. The hollow shaft body is divided into two portions, a body portion of which latches to one of the end portions of the torsion bar. In opposite surfaces of the two portions, a projection formed at one surface and a concave portion formed at another surface are loosely inserted and provided with a relatively rotatable race area. When this device is used, the rotative member is rotated at a slow speed by a jumping up torque of the torsion bar in a rotation area up to a neutral point, while in a rotation area past the neutral point, the rotative member can be stopped at any position.
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