公开(公告)号：EP1058243A1

公开(公告)日：2000-12-06

申请号：EP00111499.0

申请日：2000-05-29

申请人： Pioneer Corporation

发明人： Hoshinaka, Eiji, c/o Tokorozawa Koujou ,  Takagi, Keiichi, c/o Tokorozawa Koujou ,  Kaneko, Toshiyuki, c/o Tokorozawa Koujou ,  Ishii, Katsumi, c/o Tokorozawa Koujou

IPC分类号： G11B7/085 ,  G11B21/04 ,  G11B5/55

CPC分类号： F16H25/2409 ,  G11B7/08582 ,  G11B7/0946 ,  G11B11/10571 ,  G11B21/083 ,  G11B33/08

摘要： A transmitting member (18) is mounted between a pickup (16) slidably supported along guide shafts (13, 14) and a feeding screw (15) having a helical groove on a peripheral surface thereof. A turning force of the feeding screw (15) is transmitted to the pickup (16) through the transmitting member (18) so that the pickup (16) is transferred to a side of an information recording and reproducing medium. Tooth portions (24, 25) engaged with the helical groove are formed at one end of the transmitting member (18). A regulating portion (21) is formed at a side opposed with the tooth portions (24, 25) through the feeding screw (15), namely the feeding screw (15) is disposed between the tooth portions (24, 25) and the regulating portion (21). There is provided a gap (D2) between the peripheral surface of the feeding screw (15) and the regulating portion (21), which is shorter than a depth (P) of the helical groove. This construction enables the feeding screw (15) to smoothly rotate, and further allows the regulating portion (21) to regulate the displacement of the feeding screw (15) when an external shock is exerted on the system (9), namely the engaging condition between the helical groove and the tooth portion (24, 25) is always kept. Thus, transferring means of the pickup (16) robust against external shocks can be provided.

摘要翻译： 传动构件（18）安装在沿引导轴（13,14）可滑动地支撑的拾取器（16）和在其外周表面上具有螺旋槽的进给螺杆（15）之间。 进给螺杆（15）的转动力通过传动部件（18）传递到拾取器（16），使得拾取器（16）被传送到信息记录和再现介质的一侧。 与传动部件（18）的一端形成有与螺旋槽接合的齿部（24,25）。 调节部（21）通过进给螺杆（15）形成在与齿部（24,25）相对的一侧，即，进给螺杆（15）设置在齿部（24,25）和调节部 部分（21）。 在进给螺杆（15）的周面和调节部（21）之间设置有比螺旋槽的深度（P）短的间隙（D2）。 这种构造使得进给螺杆15能够平稳地旋转，并且当外部冲击施加在系统（9）上时，进一步允许调节部21调节进给螺杆（15）的位移，即接合状态 总是保持在螺旋槽和齿部分（24,25）之间。 因此，可以提供抵抗外部冲击的传感装置（16）的传递装置。