JPH0743268U - Disc cartridge shutter closing mechanism - Google Patents

Abstract

(57) [Abstract] [Purpose] To securely hook the shutter closing lever in the shutter closing opening hole of the disk cartridge related to the mini disk player. [Structure] The shutter closing lever is rotated like a seesaw in association with the mounting operation of the disk cartridge, so that the shutter closing lever is inserted into the shutter closing opening hole on the side surface of the disk cartridge.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a shutter closing mechanism for a disc cartridge related to a disc player.

[0002]

[Prior art]

 A conventional example will be described with reference to the perspective view of FIG. In the figure, a disc cartridge 1 has a shutter 4 for closing a reading window 3 on a recorded information surface of a disc 2, a lock lever 5 for locking the shutter 4 so as not to be easily opened from the outside, and an opening. There is provided an opening hole 4a effective when used when closing the shutter 4 that has been closed. A lock lever 5 for locking the shutter 4 is arranged inside the guide groove 1a on the side surface of the disc cartridge 1, and an opening hole 4a used when closing the shutter 4 is arranged on the side surface of the shutter 4.

As a shutter opening / closing structure for a disc cartridge of a disc player, generally, a rib 6a protruding from a side wall of a chassis of a disc cartridge housing 6 unlocks the shutter 4 by a lock lever 5. The rib 6a opens the shutter 4 in conjunction with the disc cartridge mounting operation. At the time of closing, the leaf spring-shaped hooking claws 12 fixed to the side wall of the chassis of the disk cartridge storage unit 6 are hooked in the shutter closing opening 4a, and the shutter 4 is operated in conjunction with the operation of ejecting the disk cartridge 1. It is blocked.

[0004]

[Problems to be solved by the device]

 In the guide groove inside the shutter lock lever on the side of the disc cartridge, the tip is widened in a taper shape so that the shutter opening rib protruding from the chassis side wall of the disc cartridge housing can be easily introduced. A leaf spring-shaped hooking claw for closing the shutter, which is fixed to the side wall of the chassis of the disk cartridge housing, falls off along the taper into the guide groove, making it difficult to mount the disc cartridge or making the leaf spring-shaped. There was a defect that the hook's claw could be deformed.

[0005]

[Means for Solving the Problems]

 Therefore, in the present invention, a shutter closing lever that is rotatably supported on the chassis side wall of the disk cartridge housing is provided. The closing lever extends from the fulcrum toward the disc cartridge insertion opening and has a first end having a pawl that is inserted into a shutter closing opening on the side of the shutter, and a disc extending toward the opposite side of the first end. And a second end having a spring biased in the abutting direction, and a corner of the disk cartridge during the mounting operation of the disk cartridge. The claw at the second end contacts the part and rotates, and the claw at the first end is inserted into the shutter closing opening hole on the side surface of the shutter and the rib protruding from the chassis side wall pushes down the lock lever. Then, the shutter is unlocked to make the shutter movable.

[0006]

[Action]

 Therefore, the shutter closing lever is prevented from dropping into the guide groove on the side surface of the disc cartridge when the disc cartridge is mounted.

[0007]

【Example】

 The present invention will be described with reference to an embodiment. 1 and 2 are perspective views of the main part of the present invention, and FIG. 3 is an operation explanatory diagram of the main part of the present invention. The disc cartridge 1 of the mini disc has a disc 2, a reading window 3 on the recording information surface of the disc 2, a shutter 4 for closing the reading window 3, and the shutter 4 cannot be easily opened from the outside. Lock lever 5 disposed inside the guide groove 1a on the side surface of the disc cartridge 1 to lock the shutter 4 and the shutter closing opening 4a opened on the side surface of the shutter 4 which is effective when used to close the opened shutter 4. It is composed by.

The operation procedure when the disc cartridge 1 is mounted is such that when the disc cartridge storage unit 6 is moved in the loading direction, it looks like a seesaw provided on the side wall of the chassis of the disc cartridge storage unit 6. The shutter closing lever 7 that rotates rotates. The shutter closing lever 7 extends from the fulcrum 7b toward the insertion opening of the disc cartridge 1 and has a first end portion 9 having a claw 8 which is inserted into the shutter closing opening 4a on the side surface of the shutter of the disc cartridge 1. Has a claw 10 that extends in the opposite direction and that abuts on a corner of the disc cartridge 1 to rotate, and has a second end 11 that is biased in a direction abutted by a spring (not shown). By the inserting operation of the disc cartridge 1, the claw 10 is pushed up, and the shutter closing lever 7 rotates to move the first end 9 toward the disc cartridge 1.

At this time, the claw 8 provided on the first end 9 is caught in the shutter closing opening 4a on the side surface of the shutter 4 and at the same time, the rib 6a on the side wall of the chassis of the disc cartridge housing 6 is removed. The lock of the shutter 4 by the lock lever 5 arranged inside the guide groove 1a on the side surface of the disc cartridge 1 is released, and the shutter 4 is opened.

On the other hand, when the disc cartridge 1 is ejected, the eject button (not shown) is pressed to move the disc cartridge 1 toward the insertion opening, and the shutter closing lever caught in the shutter closing opening 4a. The claw 8 of the first end portion 9 of 7 closes the shutter 4 in conjunction with the operation of ejecting the disc cartridge 1, and further movement of the disc cartridge 1 causes the second end of the shutter closing lever 7 to move. The claw 10 of the end 11 is disengaged from the side surface of the disc cartridge 1, and the shutter closing lever 7 is rotated in the direction of the disc cartridge 1 by the spring force, and the claw 8 of the first end 9 is opened from the shutter closing opening 4a. Then, the disc cartridge 1 closes the shutter 4 and ejects it from the insertion opening.

[0011]

[Effect of device]

 As described above, according to the present invention, the shutter closing lever, which is disposed on the side wall of the chassis of the disc cartridge housing, has the pawls at both ends through the fulcrum at the substantially middle portion and is biased in a certain direction, so that the disc cartridge mounting operation is performed. The shutter closing lever can be securely prevented from falling into the guide groove on the side of the disk cartridge by rotating the disk cartridge from the middle of the process and catching it in the shutter closing opening on the side of the shutter. It becomes possible to prevent the shutter closing lever from being deformed.

[Brief description of drawings]

FIG. 1 is a perspective view showing a main part of an embodiment of the present invention.

FIG. 2 is a perspective view showing a main part of an embodiment of the present invention.

FIG. 3 is an operation explanatory diagram of FIG. 1.

FIG. 4 is a perspective view showing a conventional example.

[Explanation of symbols]

 1 Disc Cartridge 1a Guide Groove 2 Disc 3 Reading Window 4 Shutter 4a Shutter Closing Opening Hole 5 Lock Lever 6 Disc Cartridge Storage 6a Rib 7 Shutter Closing Lever 7b Support Point 8 Claw 9 First End 10 Claw 11 Second Edge 12 hooking claw

Claims (1)

[Scope of utility model registration request] 1. A disk cartridge having a shutter for opening and closing a reading window of a recorded information surface and having an opening hole in a side surface thereof, a disk player for moving or mounting the disk cartridge for recording or reproducing, and the disk cartridge. There is a disc cartridge storage portion to be mounted on the disc player and a shutter closing lever which is arranged on the chassis side wall of the disc cartridge storage portion and pivotally supported rotatably. A first end portion having a claw extending in the insertion opening direction and inserted into the opening hole on the side surface of the shutter;
A second end portion extending in a direction opposite to the first end portion and having a claw for coming into contact with a corner portion of the disc cartridge to obtain a turning force, and by inserting the disc cartridge, the second end portion is formed. A shutter closing mechanism for a disk cartridge, wherein a claw provided at the first end is inserted into an opening hole on a side surface of the shutter to close the shutter when the end contacts and rotates.