| 摘要 |
PURPOSE: A safety volume knob is provided to select a volume knob method of an integrated type, thereby improving productivity by shortening assembly process time. CONSTITUTION: A switch part(20) transfers a constant electrical/mechanical signal by being arranged on a printed circuit board(10). A volume knob(30) applies constant pressure or/and torque to the switch part. The volume knob comprises a central ring(31), a guide knob(32), and a guide rib(33). The central ring is arranged in a circular shape with a constant thickness. The guide rib connects the central ring and guide knob each other. |
