JPS62138371U - - Google Patents

Description

[Brief explanation of the drawing]

1a and 1b are perspective views showing an optical disk cartridge according to an embodiment of the present invention, FIG. 2a is a partial perspective view showing an example of the locking mechanism, and FIG. 2b is a perspective view of the locking mechanism. Fig. 3a is a plan view showing an example of the locking mechanism; Fig. 3b, c, and d are sectional views for explaining the guide groove formed in the cam block; Figures a to g are explanatory diagrams of the operation of the locking mechanism, and Figures 5 a to c are partial perspective views showing a conventional example of the locking mechanism. 100... Optical disk cartridge, 101... Optical disk, 113... Shutter, 114, 115...
Spring, 116, 117...Block, 131, 13
2...Cam block, 134, 135...Pin, 14
1,142...Protrusion, 143,144...Boss, 14
3a... Notch, 145... Coil spring, 146
~149...Guide groove.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) In a disk cartridge that stores a disk consisting of a disk-shaped storage medium,
a shutter that opens and closes an access window formed to access the disk; a biasing member that engages with the shutter and biases it in the closing direction; and a biasing member that is formed between the shutter and the housing and biases the shutter. When the access window is moved in the opening direction against the member, the access window is engaged in a first position where the access window is fully opened;
A disk cartridge comprising a shutter locking mechanism that releases the engagement at a second position in the opening direction of the shutter. (2) In the utility model registration claim 1, the shutter locking mechanism includes a pin pivotally supported on the casing, guides the pin, engages the pin at the first position, and A disk cartridge comprising a block material fixed to the shutter and having a cam groove formed therein for releasing the engagement of the pin at the second position.