JP2003296997A - Disk drive - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To extend an mount effective area of a wiring board at a maximum by placing a lock pin of an eject/lock mechanism of a disk drive at the outermost side of a disk tray. <P>SOLUTION: In the disk drive for loading/unloading a recording medium by forwarding/reversing the disk tray 1 to/from a chassis case 7, the eject/lock mechanism A interlocking with a self-hold type solenoid 16 is provided to a corner at a front end of the disk tray 1 and a start lever 18 for shifting the eject/lock mechanism A to a lock state is extended along a side wall of the disk tray. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disk (for example, CD-R / RW, DVD-) as a recording medium for recording a large amount of information in various computer systems.
R / RW, etc.).

[0002]

2. Description of the Related Art Generally, a personal computer (hereinafter referred to as a personal computer) records and reproduces information on and from an optical disc. Therefore, a disc device is indispensable, and it is built in the personal computer main body or connected by a cable as an external device. I am trying to do it.

FIG. 7 shows the external appearance of a laptop computer with a built-in disk device. Normally, the disk device D is built in the side of the main body P of the personal computer, and the bezel of the disk tray 101 is operated by a switch or a command from the personal computer. The portion 102 pops out, and the user of the personal computer pulls out the disc tray 101 to load the optical disc.

Therefore, a disk device is usually equipped with a disk tray eject / lock mechanism.
An example of the proposal by the applicant of the present application is shown in FIG. The eject / lock mechanism 103 in the figure is mainly composed of a lock lever 104 and a self-holding solenoid 105.
Lock pin 1 planted on the bottom plate of the chassis case 106
07 is engaged with the lock lever 104 so that the disc tray 1
01 is locked.

[0005]

By the way, particularly in recent years, notebook computers have become thinner, and a printed wiring board (hereinafter, referred to as a printed circuit board) equipped with many electronic components such as semiconductor integrated circuits (hereinafter, referred to as
There is a tendency to mount a wiring board) on a disk tray, and its mounting density has become higher, so that the expansion of the mounting effective area of the wiring board in the disk tray has become an important issue.

However, in the case of the above-mentioned conventional disk device, the lock pin 107 is used for the disk tray 10.
Since it is on the entry path of No. 1, the wiring board cannot be expanded outside the lock pin 107, and therefore the mounting effective area of the wiring board cannot be expanded.

The present invention has been made in view of the above conventional problems, and provides an eject / lock mechanism in which a lock pin can be arranged on the outermost side of a disc tray, whereby a mounting of a wiring board is effective. It is designed to maximize the area.

[0008]

SUMMARY OF THE INVENTION Therefore, according to the present invention, in a disc device in which a disc tray is moved forward and backward in a chassis case to load / unload with a recording medium, a front end corner portion of the disc tray is provided. An eject / lock mechanism interlocking with the self-holding solenoid is provided, and a starting lever for transitioning the eject / lock mechanism to the locked state is provided along the side wall of the disc tray.

Further, according to the present invention, when the locked state of the disc tray is released, the spring force accumulated in the actuating lever is released to pop out the disc tray, thereby solving the above problems.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a view showing the external appearance of a disk device D embodying the present invention. In FIG. 1, reference numeral 1 denotes a disk tray, and a turntable 2 for rotating an optical disk is arranged at the center. And
The disc tray 1 is formed with a slit 1a,
The optical pickup unit 3 moves in the radial direction in the slit to record / reproduce information on / from the optical disc. A bezel 4 is attached to the front surface of the disc tray 1, and a push button 5 of a switch for driving the disc tray 1 by a manual operation is exposed. The disc tray thus configured is supported and guided by the guide rails 6 and is loaded or unloaded into the chassis case 7.

FIG. 2 shows a state in which the shield cover is removed from the bottom surface of the disc tray 1. The drive system unit B for the optical disc and the optical pickup is arranged in the center, and electronic parts such as semiconductor circuit elements are arranged on the rear side. The mounted wiring board P is arranged. An eject / lock mechanism A is arranged at the corner of the front end of the disc tray 1.

FIG. 3 is a diagram specifically showing the construction of the eject / lock mechanism A. In FIG. 3, reference numeral 8 is a lock lever pivotally supported, and the tip 8a of the lock lever is shown in FIG. As shown in FIG. 1, since it engages with the lock pin 7a fixed to the chassis case 7, it has a hook shape. The rear end 8b of the lock lever 8 is biased in the counterclockwise direction by the torsion coil spring 9 and is in contact with the end portion of the operating lever 10.

The operating lever 10 is pivotally supported at its tip by a screw receiving boss 11 which is formed upright from the disc tray 1 so as to be swingable as a whole. Then, a tension coil spring 13 is stretched between a hook boss 12 formed upright from the disc tray 1 and a hook 10b formed on the actuating lever 10, so that the actuating lever 10 is always urged clockwise. It abuts on the latch boss 12 and is stopped.

A recessed step portion 10a defined by locking walls 10a-1 and 10a-2 is formed on the shaft insertion portion of the operating lever 10 into the screw receiving boss 11, and is engaged with this recessed step portion. The coupling cam member 14 integrally provided with the protruding step portion 14a and the arm lever 14b is axially inserted into the screw receiving boss 11. Therefore, the convex step portion 14a can swing within the concave step portion 10a. The coupling cam member 14 is constantly urged in the counterclockwise direction by a tension coil spring 15 stretched between a hooking portion 14c formed on the outer peripheral surface and the hook 10c of the operating lever 10. The position where the convex step portion 14a contacts the locking wall 10a-1 is the rotation stop position.

Next, reference numeral 16 is a self-holding solenoid that serves as a drive source for the lock and eject, and the tips of the pair of yokes 16a and 16b are exciting coils 16c and 16b.
It is inserted and fixed from one end of d to almost the middle position. The permanent magnet 1 is attached to the ends of the yokes 16a and 16b.
6e is interposed, whereby a horseshoe-shaped magnetic circuit is formed. On the other hand, the open ends of the movable pieces 16f, which are magnetic bodies, are slidably inserted into the other ends of the exciting coils 16c and 16d.

Therefore, in the steady state, the permanent magnet 1 is
The movable piece 16 is applied to the magnetic force of the magnetic circuit formed by 6e.
f is held in a sucked state. Then, by applying a direct current from the terminals of the exciting coils 16c and 16d so that a magnetic field opposite to the magnetic field generated by the permanent magnet is generated, the magnetic field generated by the permanent magnet 16e is canceled, The restraint of the movable piece 16f is released. This movable piece 16f is a pin 10d of the operating lever 10.
Since it is connected to the lock lever 8, the lock lever 8 and the operating lever 10 are synchronized with each other. The self-holding solenoid 16 is fixed to the disc tray 1 with a screw 17.

Next, as shown in FIG. 2, an elongated actuating lever 18 for shifting the eject / lock mechanism in the eject state to the locked state is extended along the side wall of the disc tray 1 to form a disc. The tray 1 slides while being supported by the angle 1a formed on the tray 1. FIG. 4 specifically shows the structure of the starting lever 18, and the tip end 18a serving as the working end is bent to form a flat surface 18a.
-1 and the inclined surface 18a-2 are formed. Rear end 18b
A cut-and-raised piece is formed on the base plate, and the cut-and-raised piece comes into contact with the inner wall of the rear end of the chassis case 7 to advance the entire starting lever.

The starting lever 18 has its hook 18c.
Since the tension coil spring 20 is stretched between the hook and the hook 19 fixed to the disc tray 1, the tension of the tension coil spring 20 is increased when the disc tray 1 is locked and the activation lever 18 is advanced. The pressure is accumulated and the entire activation lever is biased rearward. Therefore, the rear end 18
While b is in contact with the inner wall of the chassis case 7, the disc tray 1 is always biased forward. The range in which the activation lever 18 slides due to this biasing force is determined by the elongated hole 18d formed at the rear end portion. Reference numeral 21 is a contact that serves as an earth lead to the chassis case 7.

Next, the operation mode of the eject / lock mechanism according to the present invention will be described with reference to FIGS.

FIG. 5 shows the process of reaching the locked state, and FIG. 5 (A) shows the ejected initial state. This state is the movable piece 16 of the self-holding solenoid 16.
Since f is largely separated from the yokes 16a and 16b and is not attracted by the magnetic force, the actuating lever 10 is urged in the clockwise direction by the spring force of the tension coil spring 13 and is stationary at the position shown in FIG.

When the disc tray 1 is pushed in from this state, the flat surface 18a of the tip 18a of the starting lever 18 is pushed.
-1 is the coupling cam member 1 as shown in FIG.
It contacts the arm lever 14b of No. 4 and pushes it down. Then, at this time, since the convex step portion 14a of the coupling cam member 14 is in contact with the locking wall 10a-1 of the concave step portion 10a of the operating lever 10, the operating lever 10 rotates counterclockwise, The movable piece 16f of the self-holding solenoid 16 is pushed in, and is attracted and held by the magnetic force of the yokes 16a and 16b.

At this time, as the operating lever 10 rotates in the counterclockwise direction, the lock lever 8 also rotates in the counterclockwise direction by the spring force of the torsion coil spring 9, and the inclined surface of the tip 8a of the lock lever and the chassis case. The lock pin 7a of 7 contacts. And further, the disc tray 1
When is pushed in, as shown in FIG. 5 (C), the starting lever 18 gets over the tip of the arm lever 14b, and the lock pin 7a reaches the top of the tip 8a of the lock lever. When the disc tray 1 is further pushed in from this state, as shown in FIG.
As shown in (D), the lock lever 8 reverses in the counterclockwise direction and engages with the lock pin 7a, and the disc tray 1 is locked.

Next, in order to release the lock by the eject / lock mechanism A for unloading the disc tray, that is, to eject, the user first operates the push button 5 of the switch of the bezel 4 or the personal computer. A direct current is applied to the self-holding solenoid 16 according to an instruction from the main body. At this time, the eject / lock mechanism A is shown in FIG.
(D) is in the locked state. When a direct current is applied, the magnetic field excited by the exciting coils 16c and 16d cancels the magnetic field generated by the permanent magnet 16e,
The restraint of the movable piece 16f is released.

When this state is reached, the actuating lever 10 rotates clockwise by the action of the tension coil spring 13 as shown in FIG. 6 (A), and the lock lever 8 rotates clockwise following this. As a result, the lock pin 7a is released from the tip 8a of the lock lever 8 as shown in FIG.
The spring force accumulated in the tension coil spring 20 stretched on the roller 8 is released, and the disc tray 1 starts popping out as shown in FIG. 6 (B).

At this time, as the disc tray 1 advances, the starting lever 18 retreats relative to the disc tray, and the tip 18a thereof contacts the arm lever 14b of the coupling cam member 14. Is pushed up by the inclined surface 18a-2 as shown in the figure and swings, so that it does not interfere with the backward movement of the starting lever 18. In this way, the disc tray 1 is in the pop-out end position, that is, the state of FIG. 5A, and the ejection is completed.

As is apparent from the above, according to the configuration of the present invention, the function of the starting lever 18 to shift the eject / lock mechanism A to the locked state and the tension coil spring of the starting lever 18 in the process of shifting to the locked state. Since the actuating lever 18 is provided with the function of allowing the pop-out of the disc tray 1 by the spring force accumulated in 20, the simple configuration can be achieved with a small number of parts.

[0027]

As described above in detail, according to the present invention, the eject / lock mechanism is arranged at the corner of the disc tray, and the starting lever for shifting the eject / lock mechanism to the locked state is provided. Since it extends along the side wall of the disc tray, the lock pin can be arranged on the outermost side of the chassis case. As a result, the effective mounting area of the wiring board can be increased, and the high density of the disk device can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing the outer appearance of a disk device embodying the present invention.

2 is a plan view showing a configuration of a bottom surface of the disk device shown in FIG. 1. FIG.

FIG. 3 is a perspective view showing a configuration of an eject / lock mechanism of the present invention.

FIG. 4 is a perspective view of a starting lever for shifting the eject / lock mechanism of FIG. 3 to a locked state.

FIG. 5 is a process diagram showing a process in which the eject / lock mechanism of the present invention reaches a locked state.

FIG. 6 is a process diagram showing a process in which the eject / lock mechanism of the present invention reaches an eject state.

FIG. 7 is a perspective view showing the external appearance of a notebook computer.

FIG. 8 is a plan view showing an example of a conventional eject / lock mechanism.

[Explanation of symbols]

1 ... Disc tray 2 ... Turntable 3 ... Optical pickup unit 6 ... Guide rail 7 ... Chassis case 7a: Lock pin 8: Lock lever 10 ... Actuating lever 14 ... Coupling cam member 16-Self-holding solenoid 18: Start lever

Claims (2)

[Claims] 1. A disc device in which a disc tray is moved forward and backward in a chassis case so as to be loaded / unloaded together with a recording medium, wherein an eject / linkage interlocking with a self-holding solenoid is provided at a front corner of the disc tray. While arranging the lock mechanism,
A disk device, wherein a starting lever for shifting the eject / lock mechanism to a locked state is provided along a side wall of the disk tray. 2. The spring force accumulated in the starting lever is released when the locked state of the disc tray is released,
A disk device, wherein the disk tray is popped out.