JP3885635B2 - Disk unit - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a disk device that drives an optical disk (for example, CD-R / RW, DVD-R / RW, etc.) as a recording medium for recording a large amount of information in various computer systems.
[0002]
[Prior art]
Generally, a personal computer (hereinafter referred to as a personal computer) records and reproduces information on and from an optical disk, and therefore a disk device is indispensable, and is built in the personal computer body or connected with a cable as a so-called external device. .
[0003]
FIG. 6 shows the external appearance of a notebook personal computer with a built-in disk device. Normally, the disk device D is built in the side of the personal computer body, and the bezel 102 portion of the disk tray 101 is moved by a switch operation or a command from the personal computer. Pop-out is performed, and the user of the personal computer further pulls out the disc tray 101 to load the optical disc.
[0004]
In such a disk apparatus D, as shown in FIG. 7, a turntable 103 fixed to the drive shaft of a spindle motor disposed immediately below is disposed in the center of the disk tray 101, and the center hole of the optical disk is clamped by this turntable. In this way, the rotational force is transmitted. The head unit 104 mainly composed of an optical pickup reciprocates in the radial direction in the slit 101a formed in the disk tray to record and reproduce information on the optical disk. The disc tray 101 configured as described above is guided by the guide rail 105 and is accommodated in the chassis case 106.
[0005]
Further, the disk device is usually provided with an eject / lock mechanism for fixing, that is, locking the loaded state when the disk tray is loaded. Is shown in FIG. The eject / lock mechanism 107 shown in the figure is mainly composed of a lock lever 108 and a self-holding solenoid 109, and a lock pin 110 raised from the bottom plate of the chassis case 106 and fixed to the lock lever 108 is engaged. The disk tray 101 is locked.
[0006]
[Problems to be solved by the invention]
By the way, in recent years, notebook computers have been thinned, and there is a tendency to mount wiring boards equipped with many electronic components such as semiconductor integrated circuits on a disk tray. The tray itself is heavier.
[0007]
In addition, laptop computers are highly portable, and are frequently carried outdoors, for example, at sports competition venues, exhibition venues, academic conferences, and symposium venues. However, the personal computer body may be dropped and shocked due to unforeseen inconvenience, and the disc tray pops out as a fatal damage that makes it unusable, that is, the loading state of the disc tray cannot be locked. Accidents that make recording and playback impossible are increasing.
[0008]
As described above, since the weight of the disc tray itself is large, for example, when a notebook computer as shown in FIG. 6 is dropped from the side surface in which the desk tray is built, the impact due to gravitational acceleration of 200 G or more is caused. A load may be applied to the disc tray. Then, the lock pin shown in FIG. 7 is broken or bent from the mounting portion by the lock lever, and the disc tray pops out.
[0009]
When this happens, it means that the disc tray cannot be locked when it is stored in the computer itself, meaning that it cannot be used on the spot, and important tasks such as recording information on the computer are interrupted. It will be. The repair is delivered to the manufacturer and handled by replacing the entire disk device.
[0010]
The present invention has been made in view of such a conventional problem. In addition to the eject / lock mechanism, a lock mechanism that operates only when an impact load is applied is provided to protect the eject / lock mechanism and receive the impact load. The disc tray can be prevented from popping out.
[0011]
[Means for Solving the Problems]
Therefore, according to the present invention, the disk tray is moved forward and backward in the chassis case to load / unload with the recording medium, and the lock lever (B1) of the eject / lock mechanism (B) is locked when the disk tray is loaded. In the disk device in which a loaded state is fixed by engaging with a pin, the disk tray or the chassis case is provided so as to be swingable, and in the loaded state, the disk tray or the chassis case The lock lever (7) to be engaged, and in the loaded state, when receiving an impact load that moves in the direction of unloading the disc tray, the lock lever (7) slides in the direction of the lock lever (7). slider contact, prevents swinging of the engagement releasing direction of the lock lever (7) and A block (8), provided with a locking mechanism (C) having a.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The embodiments described below are based on the premise that the disk device is built in the main body of the personal computer. However, the present invention is not limited to this, and can also be implemented in an external disk device. It is. Further, the lock mechanism of the present invention will be described based on the embodiment of the disk tray of the disk device. However, the desired object can be achieved also in the embodiment of the chassis case for accommodating the disk tray. .
[0013]
FIG. 1 shows a disk apparatus embodying the present invention, showing a state in which a shield cover molded with a thin metal plate is removed from the bottom surface of a disk tray 1, and this disk tray is equipped with electronic components such as a semiconductor integrated circuit. The wiring board 2 is mounted, a drive system unit A for driving the optical disk and the head unit is disposed at the center, and a disk tray eject / lock mechanism B is disposed at the corner of the front end. Yes.
[0014]
Next, reference numeral 3 denotes a chassis case, and the figure shows a state in which the bottom plate of the chassis case appears. A lock pin 4 of the disc tray is fixed to the bottom plate of the chassis case 3 so as to rise toward the inside. When the disc tray 1 is loaded, the lock lever B1 of the eject / lock mechanism B is engaged. To do.
[0015]
FIG. 2 is a perspective view showing an assembled state of the disk tray 1 and the shield chassis 3. The disk tray 1 is supported on both sides by guide rails 5 in a loosely fitted state. Is supported by a support rail 6 fixed to the side wall 3a.
[0016]
Next, the lock mechanism C of the present invention is disposed at the back of the disc tray 1 as shown in FIG. 1, and is mainly composed of a lock lever 7 and a slider block 8 as movable elements. FIG. 3 shows the configuration of the lock mechanism C in detail. The swingable lock lever 7 is latched by an arm 10a of a torsion coil spring 10 mounted on a post 9 that is erected on the disc tray 1. Therefore, the lock lever 7 is urged clockwise around the fulcrum 7b.
[0017]
On the other hand, the slider block 8 is formed with a pair of sled legs 8 a and 8 b which are parallel to the lower part of the main body, and the sled legs are supported by angle pieces 11 a and 11 b formed on the disc tray 1. Therefore, the slider block 8 is slidable in the front-rear direction and is always urged toward the rear end of the tray by the arm 10b of the torsion coil spring 10, but fixes the wiring board 2 formed on the disk tray 1. It stops at a position where it abuts against the screw receiving boss 12.
[0018]
The spring force of the torsion coil spring 10 may be as small as the lock lever 7 and the slider block 8 can be set at fixed positions. Further, it is desirable that the slider block 8 is made of a synthetic resin or metal having a high mass so that the mechanical response is high.
[0019]
In the loaded state in which the disc tray 1 is completely accommodated in the chassis case 3 as shown in FIG. 4, the lock lever 7 has a window hole 1a on the side wall of the disc tray 1 and a window on the guide rail 5 as shown in FIG. The hole 5a, the window hole 6a of the support rail 6, and the window hole 3b of the side wall 3a of the chassis case are aligned with each other, and the tip 7a of the lock lever 7 comes to rest with facing each of the window holes.
[0020]
On the other hand, when the unloading of the disk tray 1 is started and the movement is started, the tip 7a of the lock lever 7 is immediately pushed up to the window hole 3b of the side wall 3a of the chassis case and the window hole 3 of the support rail 6, and FIG. As shown in FIG. 2, the vehicle rides on the inner wall of the guide rail 5 and continues to move while the tip 7a of the lock lever 7 slides on the inner wall.
[0021]
FIG. 5B shows the operation of the lock mechanism C in a normal state in which no impact load is received. The disk tray 1 is loaded, that is, the lock mechanism C is in the state shown in FIG. In some cases, when an impact load in the disc tray ejection direction is applied to the disc tray 1 due to the fall of the personal computer body, the slider block 8 slides in the direction of the lock lever 7 at that moment, that is, before the disc tray 1 starts moving. The top of the slider block 8 comes into contact with the lock lever 7 as shown in FIG.
[0022]
In this state, the slider block 8 becomes a wedge, the rocking of the lock lever 7 in the counterclockwise direction is prevented, and the tip 7 a of the lock lever 7 is connected to the window hole 3 b of the chassis case and the guide rail 5. The state of riding on the window hole 5a is maintained. Therefore, since the disc tray 1 is kept stationary, the forced load applied between the lock pin 4 and the lock lever B1 of the eject / lock mechanism B is reduced, and the breakage thereof can be prevented.
[0023]
Note that the behavior of the slider block 8 when an impact load is applied is instantaneous and immediately returns to the position of FIG. 5A by the action of the torsion coil spring 10, but the impact load is usually temporarily Since it occurs in a very short time, the object can be sufficiently achieved by momentarily preventing the lock lever 7 from swinging.
[0024]
In the present invention, the slider block 8 is moved in the direction parallel to the moving direction of the disc tray 1 as described above, so that when an impact load is applied in the ejecting direction of the disc tray, the slider block 8 is moved. 8 responds directly to the impact load and slides in the disc tray ejection direction to become a wedge for the lock lever 7. By virtue of such a configuration, the reaction operation with respect to the impact load is not converted into, for example, a rotating motion, so that the mechanical response can be made high, and the eject / lock mechanism. Can be reliably prevented.
[0025]
【The invention's effect】
As described above in detail, according to the present invention, since the lock mechanism that responds to the impact load is provided, the disk tray does not break out of the eject / lock mechanism due to the fall of the personal computer or the like, A disk device with high safety and reliability can be obtained.
[Brief description of the drawings]
FIG. 1 is a diagram showing a bottom surface of a disk device embodying the present invention.
FIG. 2 is a perspective view of a disk device embodying the present invention.
FIG. 3 is a perspective view showing a configuration of a lock mechanism according to the present invention.
FIG. 4 is a view showing a state in which a locking mechanism according to the present invention is provided.
FIG. 5 is a diagram showing an operation mode of the locking mechanism according to the present invention.
FIG. 6 is a diagram illustrating an appearance of a notebook computer.
FIG. 7 is a diagram showing an external appearance of a disk device.
FIG. 8 is a diagram showing an example of an eject / lock mechanism.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Disk tray 2 ... Wiring board 3 ... Chassis case 4 ... Lock pin 5 ... Guide rail 6 ... ··· Support rail 7 ······ Lock lever 8 ··· Slider block 9 ··· Post 10 ··· Torsion coil spring

Claims (1)

The disk tray is moved forward / backward in the chassis case to load / unload with the recording medium, and when the disk tray is loaded, the lock lever (B1) of the eject / lock mechanism (B) is engaged with the lock pin. In the disk unit where the load state is fixed,
A lock lever (7) that is swingably provided on one of the disk tray and the chassis case and engages with the other of the disk tray or the chassis case in a loaded state ;
In the loaded state, when receiving an impact load that moves the disc tray in the unloading direction, the disc tray slides in the direction of the lock lever (7) and comes into contact with the lock lever (7). A slider block (8) for preventing swinging in the disengagement direction of
Disk apparatus characterized in that a locking mechanism (C) having a.

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