JPH0422438Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a disk player, and more particularly to a disk player equipped with a disk clamping mechanism that uses a motor to both clamp and unclamp a disk.

BACKGROUND ART FIGS. 8 and 9 show a conventional disk clamp mechanism of this type of disk player. In each figure,
1 is the clamp arm, 2 is the disk clamper, 3
is a motor, 4 is a gear mechanism, 5 is a turntable,
6 is a tray.

The gear mechanism 4 includes a worm 7 fixed to the shaft of the motor 3, a worm wheel 8 meshing with the worm 7, a gear 9 integrated therewith, and a gear 10 meshing therewith. The worm 7 and the worm wheel 8 constitute a self-locking mechanism. A pin 11 for locking the clamp arm 1 is implanted in the gear 10.

In FIG. 8, the actual state shows the disk clamped state, and the two-dot chain line shows the disk clamp released state.

Before the disk is mounted, the disk clamp mechanism is in the unclamped state.

Tray 6 on which compact disk 15 is placed
When the player enters the player and the disc 15 is placed on the turntable 5, the motor 3 is started and rotates normally. The rotation of the motor 3 is decelerated by the gear mechanism 4, and the gear 10 rotates by a predetermined angle α at low speed in the direction of arrow _A1 .

As the gear 10 rotates, the pin 11 locks and pushes up the rear end of the clamp arm 1, and the clamp arm 1 rotates in the direction of arrow _B1 with respect to the shaft 17 against the spring 16 to the position shown by the solid line. do. As a result, the clamper 2 descends and clamps the disk 15 onto the turntable 5.

Even after the motor 3 stops, the gear 10 is locked in the rotational position by the worm 7 and the wormwheel 8, the clamp arm 1 is restricted from rotating in _{the two} directions of arrow B, and the disk 15 is kept in the clamped state. dripping The disk 15 rotates in this state,
will be played.

When removing the disc 15 from the player, an open button (not shown) is pressed. By this operation, the motor 3 starts and rotates in reverse, and the gear 10 rotates by an angle α in the direction of arrow _A2 .

The rotation of the gear 10 causes the pin 11 to retreat from the clamp arm 1, and the spring 16 causes the clamp arm 1 to rotate in the direction of arrow _B2 , causing the clamper 2 to rise.
The disk 15 is unclamped.

Subsequently, the tray 6 is pushed out and the disc 15 is taken out from the player.

Problems to be Solved by the Invention As mentioned above, since the disc 15 is unclamped by the motor 3, if the fuse of the player blows due to a power outage or an electrical system failure, The disc 15 cannot be taken out from the player until the player is powered on, creating a problem that it is inconvenient to use.

The present invention makes it possible to release the clamp of the disc by a predetermined operation without waiting for the disc player to be energized when the above situation occurs, and to release the disc clamp when the disc player is energized. It is an object of the present invention to provide a disk player configured to prevent erroneous operations by preventing operations.

Means for Solving the Problems The present invention provides a disk player equipped with a disk clamp mechanism in which a clamp arm having a disk clamper is moved by a motor between a clamp position and a clamp release position via a gear mechanism. The mechanism 20 is configured to have a worm 7 and a worm wheel 8 that constitute a self-locking mechanism, and a spring member 16 that urges the clamp arm 1 to the clamp release position, and a mechanism that rotates from the worm wheel of the gear mechanism. a clutch mechanism 30 provided on the output side; and a clamp release operation mechanism 40 that is operated when attempting to release the clamp of the disk when the disk player is in a non-energized state.
and a clutch release mechanism 32 that releases the clutch mechanism when the clamp release operation mechanism is operated.
and a mechanism 45 that locks the clamp release operation mechanism so that it cannot be operated when the disc player is in an energized state, and a mechanism 45 that locks the clamp release operation mechanism so that it cannot be operated when the disc player is in a de-energized state. When operated, the clutch release mechanism operates, the clutch mechanism is released, and the clamp arm is moved to the clamp release position by the spring member.

Function The clamp release operation mechanism, the clutch mechanism, the clutch release mechanism, and the spring member release the disc clamp even though the disc player is in a non-energized state and the worm wheel of the gear mechanism is in a self-locked state. It acts to enable movement in the release direction.

The locking mechanism acts to limit erroneous operation of the clamp release operating mechanism, for example, during disc playback.

Embodiment FIGS. 1 and 2 respectively show a disk clamp mechanism and a manually operated clamp release mechanism of a disk player according to an embodiment of the present invention. In each figure, parts corresponding to those shown in FIGS. 8 and 9 are designated by the same reference numerals, and their explanations will be omitted.

20 is a gear mechanism, which is composed of a worm 7, a worm wheel 21, a gear 22, and a gear 10, as shown in FIG. The worm 7 and the worm wheel 21 constitute a self-locking mechanism when the motor 3 is stopped.

Worm wheel 21 and gear 22 are supported by the same shaft 23. Worm wheel 21
The washer 24 and E are attached to the tip of the shaft 23 from both sides.
The position is regulated by rings 25 and 26. The gear 22 is provided on a shaft 23 so as to be slidable in the directions of arrows C ₁ and C ₂ .

As shown in FIG. 4, the gear 22 has a convex portion 27 on the left end and an annular groove 28 around the right side.

The right end of the worm wheel 21 has the above-mentioned convex portion 2.
A recess 29 corresponding to 7 is formed. Convex portion 27
and the recess 29 constitute a clutch mechanism 30.

This clutch mechanism 30 is similar to the gear mechanism 20 described above.
The rotation output side of the worm wheel 21 is provided inside the worm wheel 21 .

The gear 22 is moved in the direction of arrow _C1 by the spring 31, and normally the protrusion 27 is fitted into the recess 29, and the clutch mechanism 30 is in a connected state.

As shown in FIG. 5, a clutch release mechanism 32 is provided on an L-shaped lever 35 that is pivotally supported by a pin 34 on the chassis 33, and at the tip of one arm of the lever 35. It consists of a roller 36 that fits into the annular groove 28.

The lever 35 is biased in the direction of arrow _D1 by a spring 37 and is in a rotational position where it is locked by a pin 38.

A rising bent piece 39 is formed at the tip of the other arm of the lever 35.

Reference numeral 40 denotes a clamp release operation mechanism, which is attached to the front panel 4 of the disk player as shown in FIG.
A clamp release button 42 provided protruding from 1;
It consists of a sliding rod 43 that is movable in the directions of arrows E ₁ and E ₂ using pins and elongated holes. Sliding rod 43
is normally in a position moved in the direction of arrow _E1 by the spring 44, and its tip faces the above-mentioned bent piece 39.

45 is a mechanism that locks the above-mentioned operating mechanism 40 so that it cannot be operated, and includes an L-shaped lever 47 pivotally supported by a pin 46, a plunger 48 connected to this, and a mechanism implanted at the tip of the arm of the lever 47. It is provided with a pin 50 and the like that locks the protruding portion 49 of the sliding rod 43.

The plunger 48 is configured to be energized when the power switch of the disk player is turned on and maintain an excited state. When the plunger 48 is energized, the lever 47 moves against the spring 51 as shown in the arrow
The pin 50 is rotated in the _F1 direction, and the pin 50 is in a position to lock the protruding portion 49. When the plunger 48 is demagnetized, the lever 47 is moved by the arrow 51 by the spring 51.
F It rotates in _two directions until it is locked by the stop pin 52.

Next, the operation of the mechanism with the above configuration will be explained.

Before the disk is mounted, the disk clamp mechanism is in the unclamped state.

When the tray 6 on which the disc 15 is placed enters the player and the disc 15 is placed on the turntable 5, the motor 3 is started and rotates in the forward direction.

The rotation of the motor 3 is decelerated by the worm gear mechanism and transmitted to the worm wheel 21, which rotates in the direction of arrow _G1 . The clutch mechanism 30 is in a connected state, and the gear 22 rotates integrally with the worm wheel 21. Further, the gear 10 rotates by an angle α in the direction of arrow _H2 .

As the gear 10 rotates, the clamp arm 1 is pushed up by the pin 11 and rotated in the direction of arrow _B1 , and the clamper 2 descends to clamp the disk 15 onto the turntable 5, as in the conventional case. When the clamping is completed and the motor 3 is stopped, the worm wheel 21 of the gear mechanism 20 self-locks, and the clamper 2 is thereafter held in the clamped state. The disc is then played.

When the open button is pressed to remove the disc 15 from the player after the playback is finished, the motor 3 starts and rotates in reverse, the gear 10 rotates in the _two directions of arrow A, and the pin 1
1 moves downward, and arm 1 moves toward arrow B ₂ due to spring 16.
direction, the clamper 2 rises, and the disc 1
5 is unclamped. Subsequently, the tray 6 is pushed out and the disc 15 is taken out from the player.

Next, we will mainly explain how to take out the disc 15 from the player in the event of a power outage while the disc 15 is clamped, or if the fuse of the player blows due to a failure in the electrical system. This will be explained with reference to FIGS. 6 and 7.

When the player becomes de-energized as described above,
The plunger 48 is demagnetized and the lever 47 is moved by the spring 5.
1, the pin 50 is rotated as shown by the two-dot chain line in FIG. 1, and the pin 50 is retracted from the projecting portion 49, and the lock is released. As a result, the button 42 can be pressed.

When removing the disc 15 from the player, the button 42 is pressed. As a result of this operation, the button 42 is pressed and the sliding rod 43 moves as shown in FIG.
The lever 47 moves in the _E2 direction and is pushed by the tip of the sliding rod 43 to rotate in the _D2 direction.

As the lever 47 rotates, as shown in FIG. 7, the gear 22 is pushed by the roller 36 and shifts in the direction of arrow _C2 against the spring 31, and the convex portion 27 is removed from the concave portion 29. The clutch mechanism 30 is in a disengaged state.

As a result, the rotation transmission path between the worm wheel 21 locked to the worm 7 and the gear 10 is cut off, and the gear 10 is unlocked.

As a result, even though the worm wheel 21 is self-locked, when the pin 11 is pushed and the gear 10 is rotated, the clamp arm 1 is rotated by the spring 1.
The disk clamper ₂ is rotated in the arrow B2 direction as shown by the two-dot chain line in FIG. 2 due to the spring force 6, and the disk clamper 2 is raised to release the disk 15 from being clamped.

In this state, pull out tray 6 and insert disk 15.
is taken out from the player.

Therefore, even if the motor 3 does not start due to a power outage or the like, it can be taken out from the disc player without waiting for the power outage to be restored, making it easy to use.

When button 42 is released, the disc player returns to its original state as shown in FIG.

Note that the provision of the above-mentioned operating mechanism 40 poses a problem in that the disc clamp may be released during disc playback.

Therefore, when a disc is being played back, that is, when the player is powered off, the button 42 cannot be operated as described below.

During disc playback, the plunger 48 is in an energized state, the lever 47 is in the rotational position shown in FIG. As a result, the lock mechanism 45 is in a locked state, and the sliding movement of the sliding rod 43 in the direction of arrow _E2 is restricted. Therefore, the button 42 cannot be operated, and malfunctions are reliably prevented and no inconvenience occurs.

Effects of the invention As explained above, according to the invention, the worm wheel of the gear mechanism is self-locked not only when the disc player is energized, but also when the disc player is not energized due to a power outage, etc. Nevertheless, the disc clamp can be released and the disc can be taken out from the disc player, improving usability. Moreover, when it would be inconvenient for the disk to be unclamped, such as during disk playback, the operation mechanism is locked and cannot be operated, so that erroneous operation can be reliably prevented and no inconvenience will occur.

[Brief explanation of drawings]

Fig. 1 is a plan view of essential parts of an embodiment of the disc player of the present invention, Fig. 2 is a sectional view taken along the line - in Fig. 1, and Fig. 3 shows the structure of the gear mechanism in Fig. 1. Figure 4 is a perspective view of the first gear in Figure 3;
5 is a perspective view showing the clutch release mechanism in FIG. 1, FIG. 6 is a diagram illustrating the disc clamp release operation in the event of a power outage, etc., FIG. 7 is a diagram showing the gear mechanism in the state shown in FIG. 6, FIG. 8 is a sectional view of an example of a conventional disk player, and FIG. 9 is a plan view thereof. 1... Clamp arm, 2... Disk clamper, 3... Motor, 5... Turntable, 7...
...Worm, 8...Worm wheel, 10...
Gear, 11...Pin, 15...Compact disk, 16...Spring, 20...Gear mechanism, 21...
Worm wheel, 22...gear, 23...shaft,
27... Convex portion, 28... Annular groove, 29... Concave portion,
30...Clutch mechanism, 31...Spring, 32...
Clutch release mechanism, 35...L-shaped lever, 36
...Roller, 40...Clamp release operation mechanism, 4
2...Clamp release button, 43...Sliding rod, 45...
...Lock mechanism, 47...L-shaped lever, 48...
Plunger, 49... overhang, 50... pin, 51... spring, 52... stopper pin.

Claims (1)

[Scope of Claim for Utility Model Registration] A disk player equipped with a disk clamp mechanism in which a clamp arm having a disk clamper is moved between a clamp position and a clamp release position via a gear mechanism by a motor, the gear mechanism being self-locking. The mechanism includes a worm and a worm wheel, and a spring member that urges the clamp arm to a clamp release position; and a clutch mechanism provided at a portion of the gear mechanism on the rotation output side from the worm wheel. a clamp release operation mechanism that is operated when attempting to release the clamp on the disk when the disk player is in a non-energized state; and a clutch that releases the clutch mechanism when the clamp release operation mechanism is operated. a release mechanism; and a mechanism that locks the clamp release operation mechanism so that it cannot be operated when the disk player is in an energized state, and a mechanism that locks the clamp release operation mechanism so that it cannot be operated when the disk player is in a de-energized state. When the clutch release mechanism is operated, the clutch mechanism is released and the clamp arm is moved to a clamp release position by the spring member.