JPH0398775U

JPH0398775U -

Info

Publication number: JPH0398775U
Application number: JP12287990U
Authority: JP
Priority date: 1989-11-25
Filing date: 1990-11-24
Publication date: 1991-10-15

Description

[Brief explanation of the drawing]

図はすべて本考案の実施例に係る光デイスクカ
ートリツジを説明するためのもので、第１図は、
光デイスクカートリツジの平面図、第２図は、光
デイスクカートリツジの側面図、第３図は、光デ
イスクカートリツジの正面図、第４図は、光デイ
スクカートリツジの背面図、第５図は、光デイス
クカートリツジの底面図、第６図は、シヤツター
を開いた状態での光デイスクカートリツジの平面
図、第７図は、シヤツターを開いた状態での光デ
イスクカートリツジの正面図、第８図は、シヤツ
ター板の平面図、第９図は、シヤツター板の断面
図、第１０図は、スライダーの平面図、第１１図
は、スライダーの側面図、第１２図は、スライダ
ーの拡大前面図、第１３図は、スライダーの拡大
背面図、第１４図は、第１１図−線上の拡大
断面図、第１５図、第１６図ならびに第１７図は
、ヘツドアクセス開口、閉塞部ならびに凹部の幅
寸法の関係を説明するための図、第１８図は、シ
ヤツター閉成位置におけるコイルバネの状態を示
す一部分解平面図、第１９図は、シヤツター開成
位置におけるコイルバネの状態を示す一部分解平
面図である。１……上ケース、２……ヘツドアクセス開口、
４……凹部、１４……ガイド溝、１７……下ケー
ス、１８……ヘツドアクセス開口、２９……ガイ
ド溝、３１……カートリツジケース、３２……光
デイスク、５４……シヤツター、５５……シヤツ
ター板、５６……スライダー。 All the figures are for explaining the optical disk cartridge according to the embodiment of the present invention.
2 is a side view of the optical disk cartridge, FIG. 3 is a front view of the optical disk cartridge, FIG. 4 is a rear view of the optical disk cartridge, and FIG. 5 is a plan view of the optical disk cartridge. is a bottom view of the optical disk cartridge, FIG. 6 is a plan view of the optical disk cartridge with the shutter open, and FIG. 7 is a front view of the optical disk cartridge with the shutter open. Fig. 8 is a plan view of the shutter plate, Fig. 9 is a sectional view of the shutter plate, Fig. 10 is a plan view of the slider, Fig. 11 is a side view of the slider, and Fig. 12 is an enlarged view of the slider. 13 is an enlarged back view of the slider; FIG. 14 is an enlarged sectional view on the line of FIG. 11; FIGS. 15, 16 and 17 show head access openings, closures and recesses. 18 is a partially exploded plan view showing the state of the coil spring in the shutter closed position. FIG. 19 is a partially exploded plan view showing the state of the coil spring in the shutter open position. It is. 1...Top case, 2...Head access opening,
4... Recessed portion, 14... Guide groove, 17... Lower case, 18... Head access opening, 29... Guide groove, 31... Cartridge case, 32... Optical disk, 54... Shutter, 55... ...Shutter board, 56...Slider.

Claims

[Scope of Claim for Utility Model Registration] (1) A cartridge case consisting of an upper case and a lower case, with recesses provided at predetermined positions on the upper and lower case surfaces, and a head access opening formed in the recesses. , a shutter having a substantially U-shaped side surface with shutter plates provided on both sides, and elastic biasing means for elastically biasing the shutter to a closed position, the shutter plate being disposed within the recess of the cartridge case. A disk cartridge whose head access opening is opened and closed by its shutter plate, characterized in that the surface roughness _Rz of the recessed portion is regulated within a range of 5 to 15 μm. (2) The disk cartridge according to claim (1), characterized in that a lubricant is present on the surface of the recess.