专利名称：TRACKING DEVICE 发明人：TOMIKAWA NAOHIRO 申请号：JP19188589
pity
申请日：19890725
turn怎么读英语单词初中课外辅导公开号：JPH0358311A
ime
广州新东方公开日：反三角函数公式
法语发音词典
19910313
专利内容由知识产权出版社提供
泰国达人秀摘要：PURPOSE:To prevent the abutting angle of a magnetic head and the protrusive quantity of the head changed even when large displacement is applied on the magnetic head by providing a turning shaft on the movable terminal of an electromechanical conversion means, and mounting the magnetic head on a connecting member providing with an oblong hole into which the turning shaft intrudes. CONSTITUTION:When an electric field is applied across two electrodes of a tracking actuator 2 which us a piezoelectric element, the piezoelectric element 2 is bent, however, since one end of the element is fixed at a rotary cylinder 3 with a supporting plate 6, the other the end where the turning shaft 8 is mounted is displaced in an up-and-down direction. When the large displacement occurs at this time, the turning shaft 8 is displaced not only in the up-and-down direction by in a horizontal direction, however, the displacement in the horizontal direction can be absorbed with the elongated hole 9, and the connecting member 7 and the magnetic head 1 mounted on the member are displaced only in the up-and-down direction as shown in a direction of arrow head. Thereby, the abutting angle of the head 1 with the tape and the protrusive quantity of the head remain unchanged, and track following rvo characteristic can be obtained stably and with high precision.
申请人：MITSUBISHI ELECTRIC CORP
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