JPH0215938B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Technical Field of the Invention> The present invention relates to a disk loading device for a disk player.

<Background Art> Recently, there have been disc players on the market that optically read recorded information from a disc called a digital audio disk (DAD). There are two methods for loading the player into the player and setting it at the playing position. When comparing these two methods, the former is able to support the disc more stably at the playing position than the latter, but conventional players that use the former method have difficulty loading the disc. Since the operation (moving the disk in and out of the player) and the pressing operation of the disk were performed by completely separate drive sources, it had the disadvantage of high costs.

<Object of the present invention> The present invention has been made in view of the above-mentioned drawbacks of the conventional device. The present invention provides a disk loading device that is structurally simple by being mechanically connected to a movable body that performs transportation.

<Configuration of the Present Invention> Hereinafter, one embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a plan view of one embodiment of the disk loading device according to the present invention, in particular a plan view showing a state in which the movable body including the turntable has pulled out the disk to a non-playing position, and FIG. 2 is a sectional view taken along the line -' of FIG. 1.

In these figures, reference numeral 1 denotes a fixed chassis with a stop 1' erected on its rear edge that functions as a means for regulating the forward movement of a movable chassis (movable body) 21, which will be described later, and guide rails 2 on both sides of the top surface. ,2
has been established.

3 is a disk pressing plate that is pivotably supported on the support pieces 5 on the guide rails 2, 2 using pivot pins 4 provided on both sides of the rear end so as to be able to move up and down;
A disk holder 7 is pivotally supported by a shaft 6 at the center of the front end, and an extending piece 8 having a guide pin 9 is provided at one side edge of the rear end.

10 is a rack provided on the lower surface of one side of the disk pressing plate 3 so as to be able to reciprocate along the guide rail 2, and a guide groove 12 is provided on the plate surface extending in the longitudinal direction of the rack halfway at the rear end. A guide plate 11 is provided upright, and an operating edge 14 is provided on the side edge opposite to the gear portion 13.

The rack 10 is attached to the fixed chassis 1 through an elongated guide hole 15 provided in the rack 10.
... through the guide pin 16 on the fixed chassis 1, and the guide groove 12
is sloped upward from the front end to the rear end, and the guide pin 9 of the disk pressing plate 3 is engaged with the guide groove 12, thereby mechanically connecting the disk pressing plate 3 and the rack 10. Reference numeral 17 designates a lock lever pivotally supported by a guide pin 16 on the fixed chassis 1 on the lower surface of the front end of the rack 10, and a sliding pin 18 that slides into contact with the working edge 14 of the rack 10, and a lock lever located in front of the pin 18. It also has a lock pin 19 that locks a notched engagement portion 22a of the moving rail 22, which will be described later, so that the sliding pin 18 is always in sliding contact with the working edge 14, as shown in FIGS. 3 and 4. It is biased by a tension spring 20 suspended between the chassis 1 and the fixed chassis 1.

21 is a movable chassis, moving rails 22,
A screw 24 is fixed on the receiving plates 23, 23 which are bridged between 22, and a spindle motor 25 is provided at the center of the front part of the upper surface.

This spindle motor 25 has a turntable 27 on its rotating shaft 26, and is configured to allow a disk D to be mounted thereon in a detachable manner.

As shown in FIG. 4, the moving rail 22 is supported by the guide rail 2 via rolling rollers 28, and is configured to be able to reciprocate along the guide rail 2 like a drawer.

Reference numeral 29 designates a loading motor placed on the rear receiving plate 23, that is, mechanically connected to the movable chassis 21, with a motor shaft 30 hanging down through the receiving plate 23, and the rack 10 attached to the lower end of the motor shaft 30. gear part 1
3 is provided with a pinion 31 that meshes with the pinion 3.

The active edge 14 of the rack 10 is composed of a horizontal portion 14a and an inclined portion 14b that is located at the rear end of the horizontal portion 14a and slopes upward toward the rear. The connection point is the locking portion 14c.

Also, the working edge 14 of the rack 10, the lock plate 1
7, the sliding pin 18, the locking pin 19, the tension spring 20, the engaging portion 22a of the moving rail 22, etc. constitute a blocking means for the rack 10, and their functions will be described in detail later.

<Action of the present invention> The present invention is constructed as described above,
Next, its effect will be explained.

Now, the device is installed on the turntable 27 as shown in FIG.
When the disc D is in a position where the disc D can be attached and detached together with the movable chassis 21, that is, in a non-playing position, the sliding pin 18 of the lock lever 17 is engaged with the locking portion 14c of the working edge 14 of the rack 10, as shown in FIG. 3a. When engaged, the guide pin 9 is positioned at the lower end (front end) of the guide groove 12, and the disk pressing plate 13 is held at the raised position, that is, the non-pressed position.

With the turntable 27 in the non-loading position, when the disk D is placed on the turntable 27 (not shown) and the loading button is operated, the loading motor 2
9 rotates, causing the pinion 31 to rotate.

When this pinion 31 is given a rotational force, it tends to move toward the rear of the gear portion 13 of the rack 10. As a result, in Figure 3a, Rack 10
A force acts on it to move it in the direction of arrow A,
Further, a force is applied to the movable chassis 21, that is, the movable rail 22, to move it forward (forward movement) in the direction of arrow B, but at this time, the sliding pin 18 engages the locking portion of the working edge 14 of the rack 10. Spring 2 to 14c
Since the rack 10 is engaged with a biasing force of 0 and the engagement is maintained with a force greater than the force acting on the rack 10 in the direction of the arrow A, movement of the rack 10 in the direction of the arrow A is prevented. The pinion 31 advances toward the rear of the gear portion 13 of the rack 10, and moves toward the movable chassis 21.
moves forward, that is, the moving rail 22 moves in the direction of arrow B.

In addition, the sliding contact pin 18 of the lock plate 17 and the rack 10
Even if the engagement holding force with the locking portion 14c is smaller than the force acting on the rack 10 in the direction of arrow A, the movable chassis 21 will move forward for the following reason. If the engagement holding force is smaller than the force in the direction of arrow A, the rack 10
will move in the direction of arrow A, and along with this movement, the sliding contact pin 18 will move along the inclined portion 14b, and the lock plate 17 will rotate in the direction of arrow C. Eventually, as shown in FIG. Lock pin 1 at the position indicated by '
When the lock plate 9 comes into contact with the moving rail 22, rotation of the lock plate 17 is prevented. At this time, slide contact pin 1
8 is in the position indicated by reference numeral 18' in FIG.
progress will be made. The amount of movement of the rack 10 at this time is extremely small and poses no practical problem.

As the movable chassis 21 moves forward, the moving rail 22
moves in the direction of arrow B, and when the rear end of the movable rail 22 comes into contact with the contact 1' of the fixed chassis 1, the movable chassis 21 is stopped at the playing position of the disc D, and at this time, the notch 22a of the movable rail 22 is opened. Figure 3b
As shown in FIG. 2, it is located opposite to the lock pin 19 of the lock plate 17. Since the loading motor 29 continues to be driven, the force acting on the rack 10 in the direction of arrow A increases as movement of the moving rail 22 in the direction of arrow B is prevented, and
The rack 10 overcomes the engagement holding force between the sliding pin 18 and the locking portion 14c and begins to move in the direction of arrow A. This movement of the rack 10 causes the sliding contact pin 1 to
8 moves along the inclined portion 14b, and the lock plate 17
as shown in FIG. 22a and engages.

Then, as the rack 10 moves in the direction of arrow A, the guide pin 9 rises along the guide groove 12, so the disk pressing plate 3 rotates around the pivot pin 4 and presses the disk D waiting directly below. The disc D, which is waiting for the performance position, is pressed onto the turntable 27 using the disc presser 7 at the center.

When the pressing operation of the disk D is completed in this way, a detection means (not shown) detects the completion of the pressing operation using the movement of the disk pressing plate 3, and the driving circuit of the loading motor 29 is activated. stop rotating.

With this, the disc D is loaded to the performance position and is pressed onto the turntable 27. Thereafter, by operating the play button (not shown), the spindle motor 25 is driven to rotate the disc D. The audio information on D is played back by pickup.

Next, in the performance state described above, when the stop button is operated, the drive of the spindle motor 25 is stopped and the performance is completed, but when the eject button is then pressed, a reverse current is applied to the loading motor 29. , the motor 29 begins to rotate in the opposite direction to that during the previous loading.

This reversal of the loading motor 29 causes the pinion 31 to
starts rotating in the same direction. Initially, lock pin 1
9 is engaged with the notch 22a, and movement of the moving rail 22 in the direction opposite to the direction of arrow B, that is, in the direction of arrow A, is in a state where the rack 10 moves in the direction of arrow B, which is opposite to the previous direction. With this movement, the disk pressing plate 3 rotates upward, and the pressing of the disk D by the disk presser 7 is released.

Then, when Rack 10 returns to its original position,
The lock plate 17 is rotated in the direction opposite to the direction of arrow C by the biasing force of the spring 20, and the lock plate 17 is rotated in the direction opposite to the direction of arrow C.
9 is removed from the notch 22 and the sliding contact pin 1 is removed.
8 is engaged with the locking portion 14c, resulting in the state shown in FIG. 3b. After the rack 10 returns to its original position, the movable rail 22 begins to move in the direction of arrow A, and the movable chassis 21 moves back toward the non-playing position.

When the movable chassis 21 returns to the non-performance position,
A detection means (not shown) detects this and stops the loading motor 29 from rotating.

<Effects of the Present Invention> As described above, according to the present invention, a single loading motor can carry out the transportation of the disk between the non-performance position and the performance position, the pressing operation of the disk, and the release operation thereof, and furthermore, the disk can be transported. A loading motor is provided on the movable body to be loaded, and the pinion of the motor shaft is easily engaged, and the movement of this rack is linked to the elevation and elevation movement of the disk pressing plate.The drive system for the movable body and the disk pressing plate is thus improved. In addition, the rack is in a stopped state when the movable body is moving, and moves after the movable body has stopped, and the rack is continuous from the start of loading the disk to the end of the disk pressing operation. Compared to a player that moves by moving, the rack requires less space to move, and can be advantageous in making the player body thinner and smaller.

[Brief explanation of drawings]

FIG. 1 shows an embodiment of the disk loading device according to the present invention, in which the disk is in a non-playing position, and FIG. 2 is a side view taken along line -' in FIG. 3A, 3B and 3C are plan views showing different operating states of the above blocking means, and FIG. 4 is a front view of the above blocking means. 1: Fixed chassis, 3: Disk pressing plate, 7:
Disc holder, 10: Rack, 17: Lock plate,
20: Spring, 21: Movable chassis (movable body), 29: Loading motor, 31: Pinion.

Claims (1)

[Scope of Claims] 1. A fixed chassis, a movable body supported on the fixed chassis so as to be able to reciprocate and transport the disc between a non-performance position and a performance position by the reciprocation, and a movable body that transports the disc from the non-performance position to a performance position. regulating means for stopping the movable body at the performance position by regulating the forward movement of the movable body conveyed to the position; a pressing position for pressing the disc at the performance position with the disc presser; a disk pressing plate pivotally supported on the fixed chassis so as to be able to move up and down between a non-pressing position where the disk presser is moved upward from the fixed chassis position and separated from the disk; a rack that is supported and has a gear portion on one side edge and mechanically engages with the disk pressing plate to move the disk pressing plate up and down in conjunction with the reciprocating movement; A pinion connected to the motor shaft is engaged with the gear part of the rack,
A loading motor that switches the direction of rotation according to the direction of disk transport, and a blocking means that engages with the rack to hold the rack in a predetermined position, and the blocking means prevents the movable body from playing from a non-playing position. When the loading motor is driven to move the rack forward to the position, the movable body is moved forward by blocking the movement of the rack, and when the forward movement of the movable body is stopped by the regulating means, it acts on the rack. 1. A disk loading device for a disk player, characterized in that the rack is released from engagement and held by a force applied to the disk, thereby allowing the rack to move.