JPS636512U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図Ａは本案のヘツド駆動装置の概略正面図
、第１図Ｂは本案のヘツド駆動装置の概略上面図
、第２図Ａと第２図Ｂは積層型セラミツク駆動素
子の構造図で斜視図と断面図、第３図Ａは第１図
の開口部の開閉装置の断面図で、第３図Ｂは第３
図Ａの異なる状態の断面図、第４図は従来の回転
ヘツドの上面図、第５図Ａは従来の回転ヘツドの
正面図、第５図Ｂは従来の回転ヘツドの断面図で
ある。 １は回転消去ヘツド、２は変位拡大装置である
ヘツドベース、４０はスリツプリング、１００は
記録再生ヘツド、１３０は積層型セラミツク駆動
素子、２００はシヤツター、３００は開口部、２
１０はばね、２３０はストツパー。 Figure 1A is a schematic front view of the head drive device of the present invention, Figure 1B is a schematic top view of the head drive device of the present invention, and Figures 2A and 2B are perspective views of the structure of the laminated ceramic drive element. Fig. 3A is a sectional view of the opening/closing device of Fig. 1, and Fig. 3B is a sectional view of the opening/closing device of Fig. 1.
4 is a top view of a conventional rotary head, FIG. 5A is a front view of a conventional rotary head, and FIG. 5B is a sectional view of a conventional rotary head. 1 is a rotary erasing head, 2 is a head base which is a displacement magnifying device, 40 is a slip ring, 100 is a recording/reproducing head, 130 is a laminated ceramic drive element, 200 is a shutter, 300 is an opening, 2
10 is a spring, 230 is a stopper.

Claims (1)

【実用新案登録請求の範囲】 (1) 制御電圧の印加により伸長する積層型のセ
ラミツクス駆動素子と、前記セラミツクス駆動素
子の伸長を拡大する変位拡大装置とにより回転ヘ
ツドを駆動して、回転ヘツドシリンダー外周面に
対し前記回転ヘツドの突き出し量を変えることを
特徴とする回転ヘツド駆動装置であつて、 前記回転ヘツドシリンダー外周面に有し前記回
転ヘツドの出入する開口部を前記回転ヘツドの駆
動に伴い開閉するシヤツター手段を具備して成る
回転ヘツド駆動装置。 (2) 前記シヤツター手段は、開口部を開閉する
ためのシヤツターと、開口部を常時閉める方向又
は開く方向へ前記シヤツターを駆動するためのば
ねと、シヤツターをばねに抗して停止するための
ストツパーと、回転ヘツドの駆動に伴い前記開口
部を開く方向又は閉める方向へ前記シヤツタを前
記ばねに抗して駆動する駆動部材とから成る実用
新案登録請求の範囲第１項に記載の回転ヘツド駆
動装置。 (3) 前記回転ヘツドは消去ヘツドあるいは特殊
再生用ヘツドである実用新案登録請求の範囲第１
項又は第２項に記載の回転ヘツド駆動装置。[Claims for Utility Model Registration] (1) A rotary head cylinder is created by driving a rotary head using a laminated ceramic drive element that expands upon application of a control voltage and a displacement magnifying device that magnifies the expansion of the ceramic drive element. A rotary head driving device characterized in that the amount of protrusion of the rotary head relative to the outer circumferential surface is changed, the rotary head cylinder having an opening provided on the outer circumferential surface through which the rotary head enters and exits, as the rotary head is driven. A rotary head drive device comprising shutter means for opening and closing. (2) The shutter means includes a shutter for opening and closing the opening, a spring for driving the shutter in the direction of constantly closing or opening the opening, and a stopper for stopping the shutter against the spring. and a drive member that drives the shutter against the spring in the direction of opening or closing the opening as the rotary head is driven. . (3) The first claim for utility model registration is that the rotating head is an erasing head or a special reproduction head.
The rotary head drive device according to item 1 or 2.