Rotary magnetic head assembly

Abstract

Abstract PURPOSE:To stably set the necessary height of a magnetic head from a device mounting surface by making the spring constant in the moving direction of such a plate spring that has the head among those made of non-magnetic material larger than that of the other plate spring. CONSTITUTION:Such one of the pair of parallel plate springs 41 supporting a coil bobbin 43 that has the magnetic head 5 on it is made have a spring constant larger than that of the other plate spring 41. Accordingly, when the coil bobbin 43 expands due to thermal expansion, most of the expansion is absorbed by the deflection of the plate spring 41 of the less spring constant, so that the plate spring 42 of the larger spring constant hardly deflect. Therefore, the necessary mounting height H of the head 5 form the device mounting surface 50a is made hard to vary. As a result, there can be almost no difference between the mounting height set during assembly work and the center value of head-moving length in actual use, thus the head can be kept within a controllable range.

Inventors

• 👤 Shigehiro Yabu
• 👤 Toshiro Tsukahara

Bibliographic Details