JPS6336956U - - Google Patents

Description

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

第１図は本考案のヘツド駆動装置のロータ部断
面図、第２図は第１図の―線上の断面図、第
３図は第１図の回転軸拡大斜視図、第４図は本考
案のヘツド駆動装置の他の実施例を示すロータ断
面図、第５図は第４図の―線上の断面図、第
６図は第４図の回転軸拡大斜視図、第７図は本考
案のヘツド駆動装置の更に他の実施例を示すロー
タ断面図、第８図は第７図の―線上の断面図
、第９図は第７図の回転軸の拡大斜視図、第１０
図及び第１１図は本考案のヘツド駆動装置の更に
他の実施例を示すロータ断面図、第１２図は本考
案のヘツド駆動装置の更に他の実施例を示すロー
タの斜視図、第１３図は従来のヘツド駆動装置の
平面図、第１４図は従来のヘツド駆動装置の欠点
を説明するためのロータ部分の平面図である。 １はヘツド駆動装置、２はモータ、３はロータ
、５は回転軸、７はリードスクリユー、８はピン
、９，１０は第１及び第２の軸受、１１はヘツド
、１２はヘツド基板、１９，１９ａ，１９ｂ，１
９ｃ，１９ｄ，１９ｅは係合部である。 Fig. 1 is a cross-sectional view of the rotor of the head drive device of the present invention, Fig. 2 is a cross-sectional view taken along the line - - in Fig. 1, Fig. 3 is an enlarged perspective view of the rotating shaft of Fig. 1, and Fig. 4 is a cross-sectional view of the rotor of the head drive device of the present invention. FIG. 5 is a sectional view taken along the line - - of FIG. 4, FIG. 6 is an enlarged perspective view of the rotating shaft of FIG. 4, and FIG. 8 is a cross-sectional view of the rotor showing still another embodiment of the head drive device; FIG. 8 is a sectional view taken along the line - - in FIG. 7; FIG.
11 are cross-sectional views of the rotor showing still another embodiment of the head drive device of the present invention, FIG. 12 is a perspective view of the rotor showing still another embodiment of the head drive device of the present invention, and FIG. 13 1 is a plan view of a conventional head driving device, and FIG. 14 is a plan view of a rotor portion for explaining the drawbacks of the conventional head driving device. 1 is a head drive device, 2 is a motor, 3 is a rotor, 5 is a rotating shaft, 7 is a lead screw, 8 is a pin, 9 and 10 are first and second bearings, 11 is a head, 12 is a head board, 19, 19a, 19b, 1
9c, 19d, and 19e are engaging portions.

Claims (1)

【実用新案登録請求の範囲】 成型されたプラスチツクマグネツトから成るロ
ータと、その外周に配されたコイルから成るステ
ータと、上記ロータの中心に挿入された回転軸と
から成るモータと、該モータの回転軸に一体に設
けられたリードスクリユーと、ヘツドが取り付け
られたヘツド基板に設けられ、上記リードスクリ
ユーと接触し、その回転に従つて上記ヘツド基板
と共に移動せしめられるピンと、上記回転軸が上
記リードスクリユー側で、上記ロータの端面近傍
において第１の軸受を介して取り付けられると共
に、上記リードスクリユーの遊端部が第２の軸受
を介して取り付けられるシヤーシと、上記回転軸
を上記リードスクリユー側に弾性偏倚するばねと
を有するヘツド駆動装置において、 上記第１の軸受及び上記ロータ間で上記回転軸
の外周の少なくとも一部に係合部が形成され、上
記ロータの一部が上記係合部と係合せしめられて
成るヘツド駆動装置。[Claims for Utility Model Registration] A motor consisting of a rotor made of a molded plastic magnet, a stator made of a coil arranged around the outer periphery, and a rotating shaft inserted into the center of the rotor; A lead screw is provided integrally with the rotating shaft, a pin is provided on the head board to which the head is attached, contacts the lead screw, and is moved together with the head board as the lead screw rotates, and the rotating shaft is connected to the lead screw. a chassis attached to the lead screw side near the end surface of the rotor via a first bearing, and to which the free end of the lead screw is attached via a second bearing; In the head driving device including a spring elastically biased toward the lead screw, an engaging portion is formed between the first bearing and the rotor on at least a portion of the outer periphery of the rotating shaft, and a portion of the rotor is A head driving device that is engaged with the above-mentioned engaging portion.