JP2867727B2 - Disk cassette mounting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk cassette mounting apparatus for mounting a disk cassette having a shutter.

[0002]

2. Description of the Related Art In order to protect a disk in a case, a disk cassette provided with a shutter on the case is generally used. Such a disk cassette mounting device has the following configuration.

That is, a slide member is slidably provided on a chassis, and a cassette holder is provided so as to be vertically movable. The cassette holder is configured to be displaced between a cassette insertion position and a cassette mounting position following the slide of the slide member. At the cassette insertion position, the disk cassette is configured to be freely inserted into and pulled out of the cassette holder.

[0004] The cassette holder is provided with shutter opening / closing means. The shutter opening / closing means has a shutter arm pivotally supported by the cassette holder, and a locking pin for locking a shutter is provided at a tip of the shutter arm. The shutter arm rotates from the shutter closed position to the shutter open position by the insertion stroke of the disk cassette, and the shutter arm is urged toward the shutter closed position by a spring force.

In the above configuration, when the cassette holder is at the cassette insertion position and the disk cassette is inserted, the shutter is displaced from the closed position to the open position by this insertion stroke.

When the insertion of the disk cassette is completed, the slide member slides and the cassette holder is displaced from the cassette insertion position to the cassette mounting position. At the cassette mounting position, the disk cassette is positioned at the reference position with the shutter open, and the recording / reproducing state is established.

When the eject mode is selected, the slide member slides in the opposite direction to displace the cassette holder from the cassette mounting position to the cassette insertion position. Then, the shutter arm is displaced by the spring force from the shutter open position to the shutter closed position, and the disc cassette is pulled out while closing the shutter following this displacement.

[0008]

As shown in FIG. 4 , a head insertion hole 2 is formed at the front end of a flat case 1 of the disk cassette D.
Is opened and closed by the shutter 3.

The shutter 3 has a substantially U-shape, and is mounted so that the upper surface 3a and the lower surface 3b sandwich the case 1. The shutter 3 is slidably provided between a closed position shown by a solid line in FIG. 8 and an open position shown by a two-dot chain line in FIG. 8, and is urged toward the closed position by a spring (not shown).

However, since no means is provided for forcibly bringing the upper surface 3a and the lower surface 3b of the shutter 3 into close contact with the upper and lower surfaces of the case 1, there is a possibility that the upper surface 3a and the lower surface 3b may change over time or under high-temperature and high-humidity conditions. As shown by the solid line in FIG. 5 , there is a case where it warps (or spreads). In particular, in the case of the shutter 3 made of plastic, warpage tends to appear.

Conventionally, in order to prevent the shutter 3 from interfering with the cassette holder of the disk cassette mounting apparatus even if the shutter 3 is warped, the cassette holder is designed with a sufficient dimension, so that the apparatus can be downsized. Had become an obstacle.

Further, making the cassette holder with a margin is not a solution for correcting the warpage of the shutter 3, but only allowing the warpage of the shutter 3 to be widened. Due to the contact of the members, parts of the disk cassette mounting device may be damaged, or the disk cassette D may become unusable.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a disk cassette mounting apparatus for providing a means for forcibly correcting the warpage of a shutter and minimizing the size of a cassette holder to reduce the size of a pressing device. .

[0014]

A disk cassette mounting apparatus according to the present invention for achieving the above object has a slide member slidably provided on an upper surface of a chassis and a cassette holder provided on the chassis so as to be vertically movable. ,
Following the slide of the slide member, the cassette holder is displaced between a cassette insertion position and a cassette mounting position. At the cassette insertion position, a disk cassette is freely inserted into and pulled out of the cassette holder and the disk cassette is inserted. A shutter opening / closing means for opening a shutter of the disk cassette in a process, wherein the disk cassette with the shutter opened is positioned at a reference position at the cassette mounting position; The slide member is provided with a warp regulating portion for regulating at least one of the upper surface portion and the lower surface portion of the shutter of the cassette.

[0015]

When the disk cassette is located at the cassette mounting position, the upper surface and / or the lower surface of the shutter is restricted in position by the warp restricting portion. Is eliminated or reduced.

[0016]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 3 show a first embodiment of the present invention. 1 and 2, the chassis 4 includes a main chassis plate 7 and side plates 8 fixed to both sides of the main chassis plate 7, respectively.

A flat-type motor is fixed to the lower surface of the main chassis plate 7, and a chucking portion 10 is fitted on a rotating shaft of the flat-type motor. The chucking portions 10 are arranged so as to protrude from the upper surface of the main chassis plate 7, and pin portions 11 are provided at four places around the chucking portions 10. A magnetic head unit 12 having a pair of head elements is fixed to the main chassis plate 7 and a slide lock unit 13 is attached. The slide lock means 13 has a support shaft erected on the main chassis plate 7, and a shaft hole of the trigger arm 15 is inserted into the support shaft. The trigger arm 15 includes a rotation support portion 15 a having the shaft hole formed therein and a cylindrical portion 15.
b is connected via an arm portion 15c, and the cylindrical portion 1
A lock plate 15d is provided at the lower end of 5b. The trigger arm 15 is urged by the torsion coil spring 16 toward the front panel 9 (clockwise). Further, a motor 18 for sliding the slide member 5 is mounted on the main chassis plate 7.

A positioning pin 19 for positioning the disk cassette D is provided upright on the side plate 8, and a guide groove 20 for restricting the movement of the cassette holder 6 is provided.

The slide member 5 has four long holes 22 at four places.
The pin portion 11 is inserted into the elongated hole 22, and the slide member 5 is slidably provided within a range in which the pin portion 11 can move in the elongated hole 22. A coil spring 2 is provided between the slide member 5 and the main chassis plate 7.
The slide member 5 is biased toward the front panel 9. Further, the slide member 5 has a guide groove 24 for guiding the guide pin 31 of the cassette holder 6, an engagement pin 25 for engaging with the trigger arm 15, and a flat gear meshing with a rotating gear (not shown) by the motor 18. A tooth 26 is provided.

The cassette holder 6 has a cassette accommodating chamber 28, and the height of the cassette accommodating chamber 28 is set to a minimum necessary for inserting the disk cassette D.

On both sides of the cassette holder 6, two pairs of guide pins 31 are provided. The guide pins 31 are arranged in the guide grooves 24 of the slide member 5, and the pair of guide pins 31 is further provided with the side plate. 8 guide grooves 20. The cassette holder 6 and the chassis 4
The coil spring 32 is hung between the side plate 8 and
The cassette holder 6 is urged downward by a spring force.
The cassette holder 6 has a cassette insertion position at which the cassette holder 6 can be inserted into and pulled out of the cassette storage chamber 28 by following the slide of the slide member 5 and the disk cassette D.
Is displaced between the cassette mounting position where recording and reproduction are possible. The displacement from the cassette insertion position to the cassette mounting position is such that when the disk cassette D is inserted into the cassette storage chamber 28, the trigger arm 15 rotates counterclockwise to release the slide lock means 13, and the slide member 5 is moved by the spring force. The cassette holder 6 is slid toward the front panel 9 and moved downward by the spring force of the coil spring 32. The displacement from the cassette mounting position to the cassette insertion position is performed by moving the slide member 5 to the front panel 9 side by the driving force of the motor 18 and moving the cassette holder 6 to the coil spring 3.
2 by moving upward against the spring force. When the movement to the cassette insertion position is completed, the trigger arm 15
The lock plate 15d is engaged with the engagement pin 25, and the cassette holder 6 is maintained at the cassette insertion position.

The shutter opening / closing means 33 has a shutter arm 34 pivotally supported by the cassette holder 6, and a locking pin 35 is provided at the tip of the shutter arm 34. The locking pin 35 projects into the cassette storage chamber 28 and is located at a position where it can be locked to the shutter 3 of the disk cassette D.

The shutter arm 34 has a disk cassette D
The shutter arm 34 is rotated from the shutter closed position to the shutter open position by the insertion stroke, and the shutter arm 34 is urged toward the shutter closed position by the spring force of the coil spring 36.

The warp regulating portion 37 is formed integrally by bending a part of the slide member 5, and when the disc cassette D is at the cassette mounting position, the shutter 3 is moved.
Is configured to regulate the warpage of the lower surface portion 3b of the first member.

The operation of the above configuration will be described below.
When the cassette holder 6 is at the cassette insertion position and the disk cassette D is inserted into the cassette storage chamber 28, the shutter arm 34 rotates against the coil spring 36 according to the insertion stroke, and the shutter 3 is displaced from the closed position to the open position. Is done.

The final insertion stroke of the disk cassette D causes the trigger arm 15 to move the torsion coil spring 1
6 and the slide lock means 13 comes off.

When the slide lock means 13 is released, the slide member 5 is moved toward the front panel by the spring force of the coil spring 23, and the cassette holder 6 is displaced to the cassette mounting position. As shown in FIG. 3, the disc cassette D is positioned at the reference position by the positioning pins 19, and the lower surface 3b of the shutter 3 is
Contacted. If the lower surface 3b of the shutter 3 has a warp as indicated by a two-dot chain line in FIG. 3, the warp is forcibly restricted, and the warp of the shutter 3 is eliminated or reduced.

When the ejection mode is selected, the slide member 5 slide motor 18 is driven, the slide member 5 slides in the opposite direction, and the cassette holder 6 is displaced to the cassette insertion position. Due to the displacement to the cassette insertion position, the trigger arm 15 returns to the lock position, and the positioning pin 19 releases the engagement with the disk cassette D.

Then, the shutter arm 34 is displaced from the shutter open position to the shutter closed position by the spring force of the coil spring 36, and the disc cassette D is displaced toward the front panel in accordance with the displacement, and is pulled out of the cassette storage chamber 28.

Since the warpage of the shutter 3 is eliminated or reduced, the disk cassette D can be pulled out without any trouble even if the height of the cassette holder 6 is set to a margin.

[0041]

As described above, according to the present invention, there is provided a disk cassette mounting apparatus in which a slide member is slidably provided on a chassis, and the slide moves a cassette holder between a cassette insertion position and a cassette mounting position. , slide the warp restricting portion for restricting the warping of the shutter of the disk cassette is located in the cassette mounting position
Since there is provided the id member, Ru effect there that subjected to the downsizing of the device is not necessary to make it a margin dimensions of the cassette holder because it forcibly correcting warping of the shutter. Special
In addition, since the warp regulating part is provided on the slide member, the chassis
In comparison with the case where a warp regulating section is
It can be formed easily and easily, and has a warp regulating part.
Increase in equipment costs due to
You .

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a disk cassette mounting device (first embodiment).
Example).

FIG. 2 is a perspective view of a disk cassette mounting device (first embodiment).

FIG. 3 is an enlarged cross-sectional view showing an arrangement of a warp regulating portion at a cassette mounting position (first embodiment).

FIG. 4 is a perspective view of a disk cassette.

FIG. 5 is a partially cutaway side view of the disk cassette.

[Explanation of symbols]

D: disk cassette, 3: shutter, 3a: upper surface,
3b: lower surface, 4: chassis, 5: slide member, 6 ...
Cassette holder, 33: shutter opening / closing means, 37: warpage regulating section.

Claims (1)

(57) [Claims] A slide member is slidably provided on an upper surface of a chassis, and a cassette holder is provided so as to be vertically movable with respect to the chassis. The cassette holder follows a slide of the slide member so that the cassette holder is positioned at a cassette insertion position and a cassette mounting position. At the cassette insertion position, a disc cassette is provided in the cassette holder so as to be freely inserted and pulled out, and a shutter opening / closing means for opening a shutter of the disc cassette in the process of inserting the disc cassette is provided. A disk mounting device in which the disk cassette with the shutter opened is positioned at a reference position, wherein a warp restricting unit that restricts at least one of the upper surface portion and the lower surface portion of the shutter of the disk cassette positioned at the cassette mounting position. the slide Disk cassette loading device being characterized in that provided in the timber.