| 摘要 |
PROBLEM TO BE SOLVED: To enhance the operability even when a linear slide element. SOLUTION: A means to transmit the force from a dial knob 2 to a slide terminal 5a which makes linear motion, has a cam groove 4a rotating in linkage with the dial knob 2, and with the cam groove 4a, the slide terminal 5a is engaged to serve as a cam mechanism for moving the slide terminal 5a linearly. If the knob 2 is turned, the slide terminal 5a receives from the groove 4a a force aslant to the slide direction, so that the slide terminal 5a makes linear motion with the component of the force. By arranging a pulley 3 for freely rotating on the outside of the slide terminal 5a, it is possible to reduce the friction force with the groove 4a.
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