| 摘要 |
PURPOSE:To decrease the number of components and to simplify the assembling, by opposing two ring magnets having sectorial notch with each other, arranging the direction of magnetization to be in parallel with a cuntilever shaft and constituting a magnetic circuit. CONSTITUTION:The two ring magnets 11 magnetized in broadwise direction and having sectorial notch with 90 deg. of center angle are arranged by inserting center yoke 12 so that the same poles oppose to each other. A side yoke 13 is provided at both sides of the magnet 11, and when a magnetic circuit 10 is inserted to a hole 8 and fixed, the sectorial notch of the circuit 10 is exposed to the lower side of the hole 8. In fitting a replacement stylus knob, a moving coil 5 fixed to the root of the cuntilever is arranged in close proximity to and opposingly to the notch of the circuit 10. |
