JP3705172B2 - Disk unit - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a disk device that drives an optical disk such as a CD-R / RW or DVD-R / RW in various computer systems, and particularly improves the rationality of assembly work when an eject / lock mechanism is mounted. It is what you do.
[0002]
[Prior art]
Generally, a disk device for driving an optical disk is indispensable for recording and reproduction of information in a personal computer (hereinafter referred to as a personal computer). The disk device for driving an optical disk is indispensable. I am doing so.
[0003]
The disk device incorporated in the personal computer main body is called a drawer system, and a drawer that accommodates an optical disk is projected out of the personal computer main body by a switch operation or a command from the personal computer so that the optical disk can be loaded. On the other hand, the upper lid opening / closing method that is externally attached with a cable has been widely adopted from music CD playback devices to personal computers because of its ease of use.
[0004]
By the way, in recent years, in such disk devices for personal computers, for example, the produced programs or video images and music are edited and the information is recorded on the optical disk. Since it is a series of information, the recording on the optical disc must be completed without interruption. However, when the mechanism unit for loading / unloading the optical disk is operated, there is a risk that the recording operation is forcibly terminated even during information recording.
[0005]
Thus, an eject / lock mechanism has been proposed that prevents the optical disc from being loaded and unloaded by human operation while the recording operation is continued in both the drawer method and the upper lid opening / closing method. This means that when the optical disk can be inserted and removed, the microcomputer in the disk device judges this, and the eject / lock mechanism configured electrically and mechanically is driven based on the eject request. Therefore, it is designed to measure the safety of the recording by rejecting the artificial operation during the recording.
[0006]
In the self-holding solenoid system in the eject / lock mechanism that achieves such an object, the self-holding solenoid is disposed as a power source, and the ejected and locked members are operated by operating a biased lock lever or the like interlocked with the movable piece. In this way, the structure is simpler than the electric motor type and suction type solenoid type eject / lock mechanism, and the manufacturing cost can be reduced.
[0007]
[Problems to be solved by the invention]
In this way, the self-holding solenoid type eject / lock mechanism has a very small self-holding solenoid, and the mechanism can be configured simply, so that it is compact and flat in terms of space saving, low cost and low power consumption. It is suitable for a disk device of a personal computer that is progressing more and more.
[0008]
However, since the eject / lock mechanism is mounted on a narrow part of the disk device, the assembly work is cumbersome and requires precise manual work. In particular, since the pulse current is supplied to the excitation coil of the self-holding solenoid, it is extremely difficult to connect the printed circuit board and the excitation coil by flexible printed wiring (FPC) because the printed circuit board and the excitation coil are close to each other. It was accompanied by.
[0009]
The present invention has been made to solve such a problem, and is designed to eliminate complicated soldering work between a printed circuit board and a terminal of an exciting coil of a self-holding solenoid. It is intended to improve the rationality of assembly work when mounting the lock mechanism.
[0010]
[Means for Solving the Problems]
Therefore, the present invention solves the above problems by means described below. That is, the invention according to claim 1 comprises a main body, a printed board fixed to the main body, a self-holding solenoid and a component connected to the printing board, and a pulse is applied to the self-holding solenoid. An eject / lock mechanism that operates by applying an electric current, wherein the printed circuit board has a function of a holding unit that holds the components of the eject / lock mechanism. The component of the eject / lock mechanism is movably held between the print substrate and the main body in response to the print substrate being fixed to the main body.
[0011]
According to a second aspect of the present invention, in the disk device according to the first aspect, the printed circuit board has the surface to be electrically connected to the self-holding solenoid outside and the first screw is used for the printed circuit board. Fixed to the main body, and the self-holding solenoid is fixed to the main body by a second screw, and disconnects the electrical connection between the printed circuit board and the self-holding solenoid and removes the first screw. The printed circuit board can be removed from the main body while the self-holding solenoid is fixed to the main body.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention shown in the drawings will be described in detail. FIG. 1 shows an upper lid opening / closing type (portable type) disk device D which is an object of the present invention, and can be used by connecting a cable (not shown) to a personal computer main body. The disk device D is mainly composed of a main body 1 and a disk loading unit 2 and an upper lid 3 for accommodating an optical disk (CD-R / RW, DVD-R / RW, etc.) as a recording medium formed on the main body. A turntable 4 for rotating the optical disk and a pickup 5 that moves in the radial direction of the optical disk are disposed at the center position of the disk loading unit 2.
[0013]
The upper lid 3 is integrally formed with a locking claw 6 for closing the upper lid on the upper surface of the main body 1. The main body 1 has a locking claw 6 at a position opposite to the locking claw 6. A through hole 7 that allows entry into the inside is formed. An eject / lock mechanism A is disposed inside the main body at a position with respect to the through-hole 7, and a printed circuit board 8 on which electronic components such as integrated circuits are mounted in the main body 1 and a bottom plate 9 that covers the bottom of the main body 1. Is disposed.
[0014]
FIGS. 2 and 3 are perspective views showing the eject / lock mechanism A. The self-holding solenoid 10 as a driving source of the ejecting / locking mechanism A has a pair of yokes 10a and 10b with the tips of the exciting coils 10c and 10d almost from the middle. Inserted and fixed until. A permanent magnet 10e is interposed at the ends of the yokes 10a and 10b, thereby forming a horseshoe-shaped magnetic circuit.
[0015]
On the other hand, the open end of the movable piece 10f, which is a magnetic body, is slidably inserted into the other ends of the exciting coils 10c and 10d. Therefore, in a steady state, the movable piece 10f is attracted and held by the magnetic force of the magnetic circuit formed by the permanent magnet 10e. A magnetic field opposite to the magnetic field generated by the permanent magnet 10e is generated by flowing a direct current from the terminal terminals 10h and 10i at the end of the exciting coils 10c and 10d, thereby generating the magnetic field by the permanent magnet 10e. The magnetic field is canceled and the restraint of the movable piece 10f is released.
[0016]
Next, the first slider 11 which is a component constituting the eject / lock mechanism A has its tip 11a connected to the connecting hole 10g of the movable piece 10f of the self-holding solenoid 10, and is linked to the movable piece 10f. Have been to. The working end 12a of the release spring 12 is locked to the rear end of the first slider 11, and the urging force is generated when the free end 12b is pressed by the locking claw 6 of the upper lid 3. ing.
[0017]
The urging force of the release spring 12 needs to be smaller than the force with which the self-holding solenoid 10 magnetically attracts the movable piece 10f. The main portion of the release spring 12 is fixed to the support by appropriate means such as screwing. The main portion of the first slider 11 is formed with guide holes 11b and 11c so that the second slider 13 described later can be operated in conjunction or independently.
[0018]
Next, the second slider 13, which is a component constituting the eject / lock mechanism A, is slidably disposed in close contact with the first slider 11. A guide pin 13a loosely fitted in the guide hole 11b and a locking claw 13b engaged with the locking claw 6 of the upper lid 3 are provided, and guide holes 13c and 13d are formed. Then, one end of the biasing spring 14 is hooked to the hook 13e formed on the side portion, and the other end is hooked to the hook 15 formed on the main body 1, so that the second slider is always provided. 13 is biased toward the self-holding solenoid 10.
[0019]
When the first and second sliders configured as described above are slidably attached to the screw receiving boss 17 formed on the main body 1 by the first screw 16 together with the printed board 8, as shown in FIG. The guide pin 13a of the slider 13 is loosely fitted in the guide hole 11b, and the guide pin 18 formed in the main body 1 is loosely fitted in the guide hole 13c of the second slider and the guide hole 11b of the first slider 11. Further, the self-holding solenoid 10 is fixed to a screw receiving boss 20 whose yoke is formed on the main body 1 by a second screw 19.
[0020]
Next, a procedure for mounting the eject / lock mechanism A to the main body 1 will be described with reference to FIG. First, the self-holding solenoid 10 before being connected to the printed board 8 is fixed to the screw receiving boss 20 formed on the main body 1 by the second screw 19. Subsequently, components such as the first slider 11 and the second slider 13 are arranged on the main body 1. At this time, the first slider 11 and the second slider 13 are not held with respect to the main body 1.
[0021]
Subsequently, the printed board 8 is fixed to the screw receiving boss 17 formed on the main body 1 with the first screw 16 with the mounting surface on the inside and the wiring surface on the outside. Thereby, the printed circuit board 8 is fixed to the main body 1. Further, the printed substrate 8 is in a state of sandwiching the first slider 11 and the second slider 13 with the main body 1, so that the first slider 11 and the second slider 13 slide relative to the main body 1. Held possible. That is, the printed circuit board 8 also has a function of a holding unit that holds the first slider 11 and the second slider 13 slidably.
[0022]
When the eject / lock mechanism A is mounted on the main body 1 as described above and the printed circuit board 8 is mounted on the bottom surface of the main body 1 as shown in FIG. 4, the terminals 10 h and 10 i of the self-holding solenoid 10 are connected to the printed circuit board 8. Are exposed to the wiring surface of the printed circuit board through the through holes 8a and 8b. A printed circuit board formed in advance so as to surround the through-holes 8a and 8b and the terminals 10h and 10i are connected by soldering to form a current path to the exciting coils 10c and 10d. After mounting the eject / lock mechanism A on the main body in this way, it is possible to connect the terminals of the self-holding solenoid to the printed circuit board by simply attaching the printed circuit board, so wiring work is not accompanied by any difficult work. Can be completed, and the rationality of the assembly work can be improved.
[0023]
Next, a procedure for removing the printed circuit board 8 for the reason of repair after the assembly is completed will be described. First, the solder connection between the printed board 8 and the terminals 10h and 10i is removed, the printed board 8 and the self-holding solenoid 10 are made separable, and the first screw 16 is removed. Thereby, the printed board 8 can be removed from the main body 1. At this time, the self-holding solenoid 10 remains fixed to the main body 1 by the second screw 19 and does not need to be removed from the main body 1.
[0024]
The embodiment described above is directed to the upper lid opening / closing method (portable type). In addition to this, as described above, a self-holding solenoid is adopted, and an eject / lock mechanism is configured to form a drawer type disk. It can be easily implemented in the apparatus.
[0025]
【The invention's effect】
As described above in detail, according to the first aspect of the present invention, the printed circuit board is provided with a function as a holding unit for holding the components of the eject / lock mechanism, and the printed circuit board is fixed to the main body. Accordingly, the components of the eject / lock mechanism are held movably between the printed circuit board and the main body, which is advantageous in reducing the number of components and reducing the size of the apparatus.
[0026]
According to the invention of claim 2, the electrical connection between the printed circuit board and the self-holding solenoid is removed, and the first screw is removed, so that the self-holding solenoid remains fixed to the main body. Since the printed board can be removed from the main body, it is not necessary to remove the self-holding solenoid from the main body when removing the printed board for repair or the like, and the workability is improved.
[Brief description of the drawings]
FIG. 1 is a perspective view of a disk device that is an object of the present invention.
FIG. 2 is an exploded perspective view of an eject / lock mechanism.
FIG. 3 is an assembled perspective view of an eject / lock mechanism.
FIG. 4 is a diagram illustrating a state in which a printed board is attached to the main body of the disk device.
[Explanation of symbols]
D ··· Disc device 1 ··· Body 2 ··· Disc loading part 3 ··· Upper lid 4 ··· Turntable 5 ···・ Pickup 6 ・ ・ ・ ・ ・ ・ Locking claw 7 ・ ・ ・ ・ ・ ・ Through hole 8 ・ ・ ・ ・ ・ ・ Printed circuit board 8a ・ ・ ・ ・ ・ Through hole 8b ・ ・ ・ Through hole 9 ・ ・ ・... Bottom plate 10 ... Self-holding solenoid 10h ... Terminal 10i ... Terminal 11 ... First slider 12 ... Release spring 13 ... Second slider

Claims (2)

The body,
A printed circuit board fixed to the body;
An eject / lock mechanism comprising a self-holding solenoid and a component connected to the printed circuit board and operating by applying a pulse current to the self-holding solenoid;
A disk device comprising:
The printed circuit board has a function of a holding unit that holds the components of the eject / lock mechanism, and the structure of the eject / lock mechanism according to the fact that the printed circuit board is fixed to the main body. A disk device characterized in that a component is movably held between the printed circuit board and the main body. The disk device according to claim 1,
The printed circuit board is fixed to the main body with a first screw, with a surface on which electrical connection with the self-holding solenoid is made outside,
The self-holding solenoid is fixed to the body by a second screw;
By disconnecting the electrical connection between the printed circuit board and the self-holding solenoid and removing the first screw, the printed circuit board is attached to the main body while the self-holding solenoid is fixed to the main body. A disk device characterized in that it can be removed from the disk.

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