公开(公告)号：US4876678A

公开(公告)日：1989-10-24

申请号：US327762

申请日：1989-03-23

申请人： Eishi Koike ,  Yasuhiko Yusa

发明人： Eishi Koike ,  Yasuhiko Yusa

IPC分类号： G11B3/00 ,  G11B3/095 ,  G11B3/78

CPC分类号： G11B3/001 ,  G11B3/095 ,  G11B3/78

摘要： A sound reproducing device is disclosed in which an index tracking portion formed on a record disc consists of a notch on the continous flange of rotational periphery of a record disc unit. A center pin of the device is normally urged outside of a casing by a spring which also urges an index setting arm with a push button type index setting rotary knob supported on the tip end of said center pin. An index setting portion consists of a plurality of openings formed in the casing and arranged along the rotational plane of said record disc unit. The index setting arm has a resilient engaging hook on its lower tip end, the engaging hook directed toward the rotational center of the record disc unit. The engaging hook engages with the flange of the record disc unit where a specific index setting portion is selected by rotation of the push button type index setting knob. Pushing the index setting knob down makes the engaging hook pass through an index setting openings. The center pin keeps a speaker unit out of engagement with a pickup such that the pickup returns to the starting point of sound reproduction. The engaging hook returns through the index tracking portion when the index tracking portion comes on the engaging hook by rotational movement of the record disc unit, causing the center pin to retract so as to impart stylus pressure to the stylus by returning the speaker unit by a stylus pressure spring.

摘要翻译： 公开了一种声音再现装置，其中形成在记录盘上的索引跟踪部分由记录盘单元的旋转周边的连续凸缘上的凹口组成。 该装置的中心销通常是通过一弹簧推动在壳体的外部，该弹簧还通过支撑在所述中心销的顶端上的按钮型折射率设置旋钮来推动指示设定臂。 索引设置部分由形成在壳体中并沿着所述记录盘单元的旋转平面布置的多个开口组成。 索引设置臂在其下端部具有弹性接合钩，接合钩指向记录盘单元的旋转中心。 接合钩与记录盘单元的凸缘接合，其中通过按钮型索引设置旋钮的旋转来选择特定的索引设置部分。 将指针设置旋钮向下推动使接合钩穿过指标设定开口。 中心销保持扬声器单元与拾取器不接合，使得拾取器返回到声音再现的起始点。 当索引跟踪部分通过记录盘单元的旋转移动而到达接合钩时，接合钩返回通过索引跟踪部分，使得中心销缩回，以便通过将扬声器单元返回一个位置来向触针施加触针压力 触针压力弹簧。

公开(公告)号：US5054012A

公开(公告)日：1991-10-01

申请号：US397872

申请日：1989-08-24

申请人： Eishi Koike ,  Yasuhiko Yusa

发明人： Eishi Koike ,  Yasuhiko Yusa

IPC分类号： G11B3/00 ,  G11B3/095 ,  G11B3/78

CPC分类号： G11B3/001 ,  G11B3/095 ,  G11B3/78

摘要： A sound reproducing device is disclosed in which an index tracking portion formed on a record disc consists of a notch on the continuous flange of rotational periphery of a record disc unit. A center pin of the device is normally urged outside of a casing by a spring which also urges an index setting arm with a push button type index setting rotary knob supported on the tip end of said center pin. An index setting portion consists of a plurality of openings formed in the casing and arranged along the rotational plane of said record disc unit. The index setting arm has a resilient engaging hook on its lower tip end, the engaging hook directed toward the rotational cetner of the record disc unit. The engaging hook engages with the flange of the record disc unit where a specific index setting portion is selected by rotation of the push button type index setting knob. Pushing the index setting knob down makes the engaging hook pass through an index setting openings. The center pin keeps a speaker unit out of engagement with a pickup such that the pickup returns to the starting point of sound reproduction. The engaging hook returns through the index tracking portion when the index tracking portion comes on the engaging hook by rotational movement of the record disc unit, causing the center pin to retract so as to impart stylus pressure to the stylus by returning the speaker unit by a stylus pressure spring.