| 摘要 |
PROBLEM TO BE SOLVED: To provide an audio equipment whose use is facilitated by dissolving such problems that adjusted volume of sound is varied at the moment fingers are parted from a volume knob and that sound volume is varied by unintended external force which is defect of conventional products, by simple constitution in which a friction pad and a coil screw are added to volume structure. SOLUTION: Pressurization mechanism generating pressurization so that a volume 6 is not rotated by a force lower than the prescribed rotation torque is constituted of a friction pad 21 having materials of high friction coefficient, high tolerance for abrasion, and a sheet shape, and a pressurization spring 20. The volume 6 is connected to a volume element 16. A friction pad 21 is arranged between a case and a volume bush 19 engaged with the volume element 16 so that only rotation force can be transmitted. The pressurization spring 20 is arranged between the volume 6 and the case, and generated pressurization is received by material thick part of the case. COPYRIGHT: (C)2003,JPO
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