JP3011908B2 - Optical disk cartridge insertion / ejection mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disk recording / reproducing apparatus, and more particularly to an optical disk cartridge insertion / ejection mechanism for loading and unloading an optical disk contained in a cartridge such as a so-called mini disk.

[0002]

2. Description of the Related Art An example of a conventional optical disk cartridge insertion / ejection mechanism will be described with reference to FIGS. FIG. 5 shows a state of waiting for insertion of the optical disk cartridge 20, and FIG.
Indicates a state where the optical disk cartridge 20 is mounted at the reproduction position. The arm 15 in the figure is rotatably supported by the chassis via the shaft 4, and rotatably supports the feed roller 1. The feed roller 1 is rotated by a rotation drive mechanism (not shown).

A tension coil spring 17 hung between the chassis and the arm 15 urges the arm 15 in a counterclockwise direction as shown in the figure. As shown in FIG. It is in pressure contact with a shaft 19 erected on the chassis.

In this state, when the optical disk cartridge 20 is inserted as shown by an arrow in FIG. 5, the optical disk cartridge 20 is inserted between the guide 18 and the feed roller 1, and the feed roller 1 is pushed by the optical disk cartridge 20 to move the arm 15. Rotates clockwise against the elasticity of the extension coil spring 17.

At this time, the feed roller 1 is pressed against the optical disk cartridge 20 by the elastic force of the tension coil spring 17, and when the insertion of the optical disk cartridge 20 is detected by the detecting means, the feed roller 1 is rotated counterclockwise. The optical disk cartridge 20 is fed to the reproduction position.

When it is detected that the optical disk cartridge 20 has been fed to the reproducing position of the reproducing unit, the feed roller 1 stops, and the slider 16 is driven to a position shown in FIG. 6 by a driving mechanism (not shown).

[0007] Then, the inclined portion 16 a of the slider 16 pushes the shaft 15 a of the arm 15 to rotate the arm 15, and the feed roller 1 moves away from the optical disk cartridge 20. Further, the floating lock of the reproducing unit is released, and the reproducing unit is supported in a floating state by the spring and the damper, so that the recording and reproducing of the disk is performed. The ejection of the optical disk cartridge 20 after recording / reproduction is performed by an operation reverse to the above.

[0008]

In the reproducing state, the feed roller 1 is mounted on the optical disc cartridge 20 in order to secure a floating stroke of the optical disc cartridge 20.
In the above-described conventional apparatus, the tension coil spring 17 is further deformed than the state in which the feed roller 1 is pressed against the optical disk cartridge 20, and the tension coil spring 17 operates. Power grows.

In order to provide a sufficient pressure contact force for transporting the optical disk cartridge 20, a tension coil spring 17 is provided.
Has a large spring constant, and the force for driving the slider 16 must be increased.

Further, while the optical disk cartridge 20 is mounted at the reproducing position, a large force must be constantly applied to the slider 16. For this reason, in the conventional optical disk cartridge insertion / ejection mechanism, the driving device of the arm 15 becomes large, which increases the required space and increases the cost.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object of the present invention is to provide an optical disk cartridge insertion / ejection mechanism capable of driving a feed roller support member with a small force. is there.

[0012]

According to the present invention, there is provided an optical disk cartridge insertion / ejection mechanism in which a first arm is rotatably supported by a chassis and is rotated and urged by a first spring. The contact portions provided on each of the chassis are pressed against each other, the second arm is rotatably supported on the first arm, and the second arm is rotated by the second spring with respect to the first arm. The first arm and the second arm are pressed against each other and pressed against each other, and the feed roller is rotatably supported on the second arm, and the operating member pushes the first arm. Thus, the first arm and the second arm are rotated, and the feed roller is pressed against the optical disk cartridge by the elastic force of the second spring.

Further, in the optical disk cartridge insertion / ejection mechanism according to the present invention, the first arm is rotatably supported on the chassis, the second arm is rotatably supported on the first arm, and the spring is provided. , The second arm is rotationally urged with respect to the first arm, and the contact portions provided on the first arm and the second arm are pressed against each other, and the feed roller is rotatable on the second arm. And the operating member drives the first arm to rotate the first arm and the second arm so that the feed roller is pressed against the optical disc cartridge by the elastic force of the spring. is there.

[0014]

Embodiments of the present invention will be described with reference to the drawings. 1 and 2 show an optical disk cartridge insertion / ejection mechanism according to a first embodiment of the present invention.
FIG. 1 shows a state in which the optical disk cartridge is mounted at the reproducing position, and FIG. A guide and a reproducing unit for transporting the optical disk cartridge 20 not shown in FIGS. 1 and 2 are the same as those described in the conventional example, and the description of their operation will be omitted. The first arm 2 and the second arm 3 in the figure are rotatably supported by the chassis via a shaft 4 erected on the chassis.

A first tension coil spring 6 hung between the first arm 2 and the chassis urges the first arm 2 in a clockwise direction so that the optical disk cartridge is mounted at the reproducing position in FIG. In the state shown, the first arm 2 is pressed against the shaft 8 erected on the chassis.

The second tension coil spring 7 hung between the first arm 2 and the second arm 3 is
Is urged clockwise and the second arm 3 is counterclockwise, and the second arm 3 is pressed against the shaft 2a erected on the first arm 2 in the state shown in FIG.

The feed roller 1 rotatably supported by the second arm 2 and rotated by a rotation drive mechanism (not shown) is separated from the optical disk cartridge mounted at the reproducing position by a distance enough to secure a floating stroke.

As shown in FIG. 2, when the optical disk cartridge 20 is transferred, the slider 5 is driven by a drive mechanism (not shown), and pushes the shaft 2b erected on the first arm 2 to push the first arm 2 Is rotated counterclockwise.

The second arm 3 is also rotated in the same direction as the first arm 2, but when the feed roller 1 is pressed against the optical disk cartridge 20, the rotation of the second arm 3 is prevented. The elasticity of the tension coil spring 7 acts as a pressing force of the feed roller 1 against the magneto-optical disk cartridge.

In the above configuration, the first tension coil spring 6 only needs to apply a force to keep the first arm 2 and the second arm 3 in a fixed position without applying a load.
Those having a small spring constant are used. The slider 5 rotates the first arm 2 against the elasticity of the first tension coil spring 6 having a small load in most of the stroke.

When the feed roller 1 is pressed against the magneto-optical disk cartridge 20 at the reproducing position, the elasticity of the first tension coil spring 6 acts on the slider 5, but the stroke for pressing the feed roller 1 is small, and By setting the position of the shaft 2b, which is the point of action of the slider 5, the force for driving the slider 5 can be reduced.

It is not necessary to deform the spring for pressing the feed roller more than in the state where the feed roller is pressed, unlike the prior art. As described above, the driving mechanism of the slider 5 has a small load and can be constituted by a mechanism smaller than the conventional one.

FIG. 3 shows an optical disk cartridge insertion / ejection mechanism according to a second embodiment of the present invention. A guide and a reproducing unit for transferring the optical disk cartridge not shown in FIG. 3 are the same as those described in the conventional example, and the description of their operation will be omitted. First arm 2 and second arm 3 in FIG.
Is rotatably supported by the chassis via a shaft 4 erected on the chassis.

A tension coil spring 9 hung between the first arm 2 and the second arm 3 urges the first arm 2 clockwise and the second arm 3 counterclockwise. The second arm 3 is normally in pressure contact with a shaft 2 a erected on the first arm 2.

The feed roller 1 rotatably supported by the second arm 2 is rotated by a rotation drive mechanism (not shown). A shaft 2b erected on the first arm 2 is inserted into an elongated hole 10a provided in the slider 5 driven by a driving mechanism (not shown), and the slider 5 rotates the first arm 2 Let it.

When the optical disk cartridge is mounted at the reproducing position, the slider 5 moves upward in FIG. 3, the first arm 2 and the second arm 3 are rotated clockwise, Is separated from the optical disk cartridge to allow a floating stroke of the optical disk cartridge.

When transferring the optical disk cartridge 20, the slider 5 is moved downward in FIG. 3, and the second arm 3 and the first arm 2 are rotated counterclockwise, but the feed roller 1 is moved. When the second arm 3 is pressed against the optical disk cartridge, the rotation of the second arm 3 is prevented, and the elastic force of the tension coil spring 9 acts as a pressing force of the feed roller 1 against the magneto-optical disk cartridge.

In the above configuration, when the feed roller 1 is pressed against the magneto-optical disk cartridge at the reproducing position, the elasticity of the tension coil spring 9 acts on the slider 10, but the stroke for pressing the feed roller 1 is small.
Further, by setting the position of the shaft 2b, which is the point of action of the slider 10, the force for driving the slider 10 can be reduced.

It is not necessary to deform the spring for pressing the feed roller more than in the state where the feed roller is pressed as in the prior art. As described above, the driving mechanism of the slider 10 has a small load and can be constituted by a mechanism smaller than a conventional mechanism.

FIG. 4 shows an optical disk cartridge insertion / ejection mechanism according to a reference example of the present invention. Guides and reproducing units for transferring the optical disk cartridge not shown in FIG. 4 are the same as those described in the conventional example, and the description of their operations will be omitted.
The arm 11 in the figure is rotatably supported by the chassis via the shaft 4 erected on the chassis.

A tension coil spring 12 hung between the arm 11 and the chassis urges the arm 11 in a clockwise direction, and the arm 11 normally has a shaft 19 mounted on the chassis.
Is pressed against. The leaf spring 13 is fixed to the arm 11 and rotatably supports the feed roller 1.

The feed roller 1 is rotated by a rotation drive mechanism (not shown). The inclined surface 14 a of the slider 14 driven by a driving mechanism (not shown)
The arm 11 is turned against the elastic force of the tension coil spring 12 in contact with the shaft 11a provided upright.

When the optical disk cartridge is mounted at the reproducing position, the slider 14 moves upward in FIG. 3, the arm 11 is rotated clockwise, and the feed roller 1 moves the floating stroke of the optical disk cartridge. Separated from optical disk cartridge to allow.

When transferring the optical disk cartridge, the slider 14 is moved downward in FIG. 4, and the arm 11 and the leaf spring 13 are rotated counterclockwise. When it is, the movement of the tip of the leaf spring 13 is prevented, the leaf spring 13 bends, and its elasticity acts as a pressing force of the feed roller 1 against the magneto-optical disk cartridge.

In the above construction, when the feed roller 1 is pressed against the magneto-optical disk cartridge at the reproducing position, the elastic force of the leaf spring 13 acts on the slider 14, but a spring for pressing the feed roller as in the prior art. Does not need to be deformed more than the feed roller pressed state. Therefore, the driving mechanism of the slider 14 has a small load and can be constituted by a mechanism smaller than the conventional one.

Although the embodiment is constructed as described above, the invention is not limited to this. For example, the first embodiment and the second embodiment
In the embodiment of the present invention, a shaft for rotatably supporting the second arm may be provided upright on the first arm.

[0037]

According to the optical disk cartridge insertion / ejection mechanism of the present invention, the elasticity of the pressing spring does not act on the driving mechanism of the feed roller supporting member except when a pressing force is applied to the feed roller of the optical disk cartridge. The mechanism can be driven with small power.

The pressing spring does not need to be deformed more than a state in which a pressing force is applied to the feed roller, and the maximum load of the driving mechanism of the feed roller supporting member is smaller than that of the conventional one. For this reason, it is possible to reduce the size of the drive mechanism and motor of the feed roller support member.

[Brief description of the drawings]

FIG. 1 is a plan view showing an optical disk cartridge insertion / ejection mechanism according to a first embodiment of the present invention.

FIG. 2 is a plan view showing another state of the optical disk cartridge insertion / ejection mechanism.

FIG. 3 is a plan view showing an optical disk cartridge insertion / ejection mechanism according to a second embodiment of the present invention.

FIG. 4 is a plan view showing an optical disk cartridge insertion / ejection mechanism according to a reference example of the present invention.

FIG. 5 is a plan view showing an example of a conventional optical disk cartridge insertion / ejection mechanism.

FIG. 6 is a plan view showing another state of the optical disk cartridge insertion / ejection mechanism.

[Explanation of symbols]

 Reference Signs List 1 feed roller 2 first arm, 2a, 2b shaft 3 second arm 4 shaft 5 slider 6 first tension coil spring 7 second tension coil spring 8 axis 9 tension coil spring 10 slider, 10a slot 11 arm DESCRIPTION OF SYMBOLS 12 Tension coil spring 13 Leaf spring 14 Slider, 14a Inclined part 15 Arm 16 Slider, 16a Inclined part 17 Extension coil spring 18 Guide 19 Axis 20 Optical disk cartridge

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Johji Tomioka 1-14-6 Dogenzaka, Shibuya-ku, Tokyo Stock Company Kenwood (72) Inventor Hisanori Togawa 1-16-16 Dogenzaka, Shibuya-ku, Tokyo Stock Company Kenwood Inside (72) Inventor Illumination Imai Illumination 1-14-6 Dogenzaka, Shibuya-ku, Tokyo Kenwood Inside (56) References JP-A-3-245356 (JP, A) JP-A-7-192369 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G11B 17/04

Claims (2)

(57) [Claims] A first arm rotatably supported by a chassis and a first spring for urging the first arm to abut against a contact portion provided on each of the first arm and the chassis; Arm is rotatably supported with respect to the first arm.
The second arm is rotationally urged against the first arm by the spring to press the contact portions provided on each of the first arm and the second arm to press the feed roller to the second arm. The first member is rotatably supported, and the first member is pushed by the actuating member.
An optical disk cartridge insertion / ejection mechanism configured to rotate the first arm and the second arm to press the feed roller against the optical disk cartridge by the elastic force of a second spring. 2. A first arm is rotatably supported by a chassis, a second arm is rotatably supported by the first arm, and a second arm is mounted on the first arm by a spring. The first arm and the second arm are pressed against the contact portions provided on the first arm and the second arm, respectively, and the feed roller is rotatably supported on the second arm. An optical disc cartridge insertion / ejection mechanism configured to rotate the first arm and the second arm by driving the optical disc cartridge to press the feed roller against the optical disc cartridge by the elastic force of the spring.