| 摘要 |
<p>PURPOSE:To make the adjustment at the assembling time unnecessary by attaching freely attachably and detachably a head rotating body onto a rotating flange attached to a revolving shaft and extending the revolving shaft upward and attaching freely attachably and detachably the rotor and the stator of a rotary transformer to the outside peripheral surface of the extension end on a basis of the extension end of the revolving shaft. CONSTITUTION:A head rotating body 33 to which plural magnetic heads 31 are attached and which is rotated by a revolving shaft 32 is arranged between upper and lower fixed drums 34 and 35, and a rotary transformer 36 is arranged in the upper fixed drum 34 and on the head rotating body 33, thus obtaining a rotary drum head. Since the rotary transformer 36 is separated from the head rotating body 33 and is attached freely attachably and detachably to the outside peripheral surface of the revolving shaft 32, parts of the head rotating body 33 and the rotary transformer 36 can be replaced independently of each other.</p> |
