JPS6290470U - - Google Patents

Description

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

第１図は本考案の一実施例を示す斜視図、第２
図は第１図中の回転止めガイドシヤフト廻りの拡
大斜視図、第３図は他の実施例を示す斜視図、第
４図は従来の一実施例を示す斜視図、第５図は第
４図中の貫通孔の拡大図である。 １…光学ヘツド本体、１ａ…対物レンズ、２…
直線ガイドシヤフト、３…回転止めガイドシヤフ
ト、４，５，７…貫通孔、６…ばね性部材、８…
ストツパ、８ａ…ストツパ上部、８ｂ…ストツパ
側部。 Fig. 1 is a perspective view showing one embodiment of the present invention;
The figures are an enlarged perspective view of the area around the rotation stopper guide shaft in Fig. 1, Fig. 3 is a perspective view showing another embodiment, Fig. 4 is a perspective view showing a conventional embodiment, and Fig. 5 is a perspective view showing the area around the rotation stopper guide shaft. It is an enlarged view of the through hole in the figure. 1... Optical head body, 1a... Objective lens, 2...
Linear guide shaft, 3... Rotation stopper guide shaft, 4, 5, 7... Through hole, 6... Spring member, 8...
Stopper, 8a...stopper upper part, 8b...stopper side part.

Claims (1)

【実用新案登録請求の範囲】 (1) 情報デイスク上の記録情報の読取り、前記
情報デイスク上への情報の書込みのうち少なくと
も一方の機能を有する光学ヘツド本体と、該光学
ヘツド本体を前記情報デイスクの半径方向へ直線
送りする直線ガイドシヤフト及び回転止めガイド
シヤフトと、前記光学ヘツド本体上に取付けられ
前記回転止めガイドシヤフト側に前記光学ヘツド
本体を付勢するばね性部材とを備えた光学ヘツド
。 (2) 前記ばね性部材には、前記回転止めガイド
シヤフトが嵌入する貫通孔が穿設され、該貫通孔
は情報デイスク面と平行な方向への相対変位がで
きる形状であることを特徴とする実用新案登録請
求の範囲第１項記載の光学ヘツド。 (3) 前記光学ヘツド本体は、前記回転止めガイ
ドシヤフトから過度に前記光学ヘツド本体が離れ
るのを規制するストツパを具備することを特徴と
する実用新案登録請求の範囲第１項又は第２項記
載の光学ヘツド。[Claims for Utility Model Registration] (1) An optical head main body having at least one of the functions of reading recorded information on an information disk and writing information onto the information disk, and the optical head main body is connected to the information disk. An optical head comprising: a linear guide shaft that linearly feeds the optical head in a radial direction; a rotation stopper guide shaft; and a spring member attached to the optical head main body and biasing the optical head main body toward the rotation stopper guide shaft. (2) The spring member has a through hole into which the rotation stopper guide shaft is inserted, and the through hole has a shape that allows relative displacement in a direction parallel to the information disk surface. An optical head according to claim 1 of the utility model registration claim. (3) The optical head main body is provided with a stopper that prevents the optical head main body from separating excessively from the rotation stopper guide shaft. optical head.