发明授权

  • 专利标题: Electromagnetic pickup cartridge with tension wire and induction magnet alined axially with armature
  • 专利标题(中): 带电磁线圈和电磁线圈的电磁感应卡盘
  • 申请号: US42876573
    申请日: 1973-12-27
  • 公开(公告)号: US3908096A
    公开(公告)日: 1975-09-23
  • 发明人: FURUYA YONEZO
  • 申请人: MICRO LABO CO LTD
  • 专利权人: Micro Labo Co Ltd
  • 当前专利权人: Micro Labo Co Ltd
  • 优先权: JP183973 1972-12-28; JP12005373 1973-10-16
  • 主分类号: H04R1/16
  • IPC分类号: H04R1/16 H04R11/08 H04R11/12
Electromagnetic pickup cartridge with tension wire and induction magnet alined axially with armature
摘要:
A pickup cartridge comprises essentially a cartridge body provided with an inducing magnet and a stylus assembly which is detachably installed in the cartridge body. This stylus assembly comprises: a vibrating structure comprising a stylus, a cantilever arm, and an armature; a tubular guard member surrounding this vibrating structure; a damper for holding the vibrating structure in a manner permitting its oscillatory vibration within this guard member; a tension wire for pulling the vibrating structure in the direction opposite to that in which it is pulled as a result of the frictional force between the stylus and the record disc; and a magnetic member for anchoring one end of the wire and, at the same time, when the stylus assembly is installed in the cartridge body, intimately contacting the inducing magnet thereby to direct and pass the magnetic flux thereof toward the armature.
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