| 摘要 |
A motion control device has a spindle with a socket (156, fig 10) and a control arm (34, fig 5), the socket defining a first axis opening into which a cylindrical pivot member 152,(47, figs 7and8) is inserted concentric with the first axis, the pivot member defining a second axis opening (158, fig 11) into which a cylindrical pivot pin 153 is inserted concentric with the second axis. The spindle can pivot in a first direction about the first axis and in a second direction about the second axis. The first and second axes are orthogonal to each other. The device may control a single-handed water faucet valve. A hexagonal drag spring 48 sleeves inserted between a body and a spindle (which may be part of the motion control device, or in a simple rotational valve) to influence frictional drag in at least one of the two directions of rotation of the spindle. The spring sleeve can create non-symmetrical gimbal behaviour. |
