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    • 6. 发明公开
    • Device for displacing a pickup head in at least two mutually perpendicular directions
    • 装置,用于在至少两个相互正交的方向移动的拾取头。
    • EP0053476A2
    • 1982-06-09
    • EP81305578.7
    • 1981-11-25
    • Hitachi, Ltd.
    • Ohnuki, Hideo
    • G11B7/12G11B7/08H04R11/12
    • H02K41/0354G11B7/093G11B7/0932H02K2201/18
    • A pickup actuator including a supporting device for supporting a driven member in all the coordinate axis directions of three coordinate axes perpendicular to one another having a support member (2) formed of viscoelastic material for supporting the driven member (1) on a frame (3). The support member (2) is tensioned and connected between the driven member (1) and the frame (3) and has one end (33, 34) affixed to the driven member (1) disposed in a plane perpendicular to an arbitrarily selected one coordinate axis (z-axis) of the three coordinate axis directions and the other end (31, 32) affixed to the frame (3) disposed in a plane perpendicular to the one coordinate axis. The pickup actuator also includes a device for generating lines of magnetic force of two directions perpendicular to each other, a first coil and a second coil (6, 13 and 7, 14) secured to the driven member and having a first path of current and a second path of current respectively disposed in one of the magnetic lines of force perpendicular to each other and perpendicular to each other in a plane perpendicular to the magnetic line of force, a a third coil (15) secured to the driven member and having a third path of current disposed in the other line of magnetic force and parallel to one of the first path of current and the second path of current in a plane perpendicular to the other line of magnetic force, and a control for effecting selective control of a current passed to the first to the third coils, whereby the pickup holder can be independently driven for movement in three axis directions perpendicular to one another.
    • 7. 发明公开
    • MOVING-MAGNET TYPE PICKUP CARTRIDGE
    • 移动磁铁式拾取筒
    • EP3086571A1
    • 2016-10-26
    • EP16165844.8
    • 2016-04-18
    • Kabushiki Kaisha Audio-Technica
    • MIYATA, Mitsuo
    • H04R11/12
    • G11B3/10H04R11/12
    • A moving-magnet type pickup cartridge is disclosed, which includes a cantilever, a stylus chip attached to a front end part in a longitudinal direction of the cantilever, a damper disposed at a base end part in the longitudinal direction of the cantilever and configured to support the cantilever in a swingable manner, a magnet disposed in the longitudinal direction of the cantilever and immediately above the stylus chip at the front end part of the cantilever, and configured to vibrate with vibration of the stylus chip, and a yoke formed in a U-shape, having generating coils being wound thereon, and having magnetic poles at both leg parts thereof being disposed to face the magnet. With this configuration, there is provided a moving-magnet type pickup cartridge enables not only to ensure a large output signal but also to obtain a faithfully reproduced sound with little distortion.
    • 公开了一种移动磁体式拾取盒,其包括悬臂梁,附接到悬臂梁的纵向方向上的前端部的触针芯片,设置在悬臂梁的纵向方向上的基端部处的阻尼器, 以可摆动的方式支撑悬臂;磁体,其沿着悬臂的纵向设置在悬臂的前端部处的触针芯片的正上方,并且被配置为随着触针芯片的振动而振动;以及轭部,其形成在 具有发电线圈缠绕在其上并且在其两个腿部处具有磁极的U形布置成面向磁体。 利用该结构,提供了一种移动磁体式拾取盒,不仅能够确保较大的输出信号,而且能够获得几乎没有失真的忠实再现的声音。