| 摘要 |
PURPOSE:To obtain a piezoelectric cartridge of high fidelity by making thickness- directional vibrations work direct to a piezoelectric body. CONSTITUTION:On the reverse surface of cartridge body 11, groove 12 with the section in a right-angled equilateral triangle shape is formed ascending backward, and to both right and left surfaces of this groove 12, a couple of plate piezoelectric bodies 13 are bonded in a right-angled truncated cone shape. The back end of cantilever 16 with stylus 17 fixed at its tip is inserted by bonding into the center axis part of amateur 15 of square section, whose two right-angled surfaces at the uppser side opposite to stylus 17 are made in contact with the lower-side surfaces of plate piezoelectric bodies 13 at both the sides via uniform-pressure elastic material 14. Fixing to main body 11 by metal fitting piece 21 via elastic material 20 whose lateral section is in a ''square'' shape simplifies the replacement of stylus 17. |
