JP2006120220A - Disk device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent damage to a flexible cable by making flexible cable, for connecting a printed wiring substrate arranged in a deeper part of a chassis case in a disk device to the printed wiring substrate arranged in a disk tray, not exposed from between the disk tray and the chassis case. <P>SOLUTION: In the disk device in which the disk tray loaded with the recording medium is made loaded/unloaded by moving it back and forth inside the chassis case, and the disk tray and the printed wiring substrate arranged in the chassis case are made to be connected by the flexible cable, a flexible part of the flexible cable is made to be stuck and held to a backside for a rear edge part of the disk tray when the disk tray is unloaded. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a disk device for driving an optical disk which is a recording medium for recording a large amount of information in a personal computer, audiovisual equipment, etc., and solves a problem that a flexible cable is sandwiched between a disk tray and a chassis case. It is what you do.

  In general, an information device represented by a personal computer is equipped with a disk device 1 for driving an optical disk as shown in FIG. 5, and the information recorded on the optical disk D is read or written by this disk device. Is done.

  FIG. 6 shows the external appearance of the disk device 1 configured such that the disk tray 2 loaded with the optical disk D is moved forward and backward in the chassis case. The disk tray 2 is formed in a shallow dish shape to accommodate the optical disk D. A turntable 4 fixed to the drive shaft of the spindle motor 3 is disposed immediately below the center of the optical disk. The center hole of the optical disk is clamped by the clamp head 5 of the turntable 4 so as to transmit the rotational force. I have to.

  Reference numeral 6 denotes a head unit, and the entire head unit reciprocates in the diameter direction of the disk tray 2 by a driving mechanism formed on the back surface of the disk tray 2, and a laser beam is irradiated onto the optical disk D from the objective lens 6a. The front end of the disc tray 2 is equipped with a bezel 7 for trimming the exterior, and a push button 8 and an indicator 7a for unloading the disc tray 2 face the surface, and the disc tray 2 is loaded and locked. A through hole 7b is formed for forcibly releasing.

  Both side edges of the disk tray 2 are supported by guide rails 9 in a loosely fitted state, and the guide rails 9 are formed on the base chassis 11 of the chassis case 10 integrally formed by a base chassis 11 and a cover chassis 12. The disc tray 2 can be moved forward and backward within the chassis case 10 by being slidably supported by a support rail 13 fixed to the side wall.

  In the disk device 1 configured as described above, as shown in FIG. 7A, a printed wiring board PCBA1 in which electronic components are mounted at the back of the chassis case 10 and printing in which electronic components are mounted on the back surface of the disk tray 2 are provided. A wiring board PCBA2 is provided, and the printed wiring board PCBA1 and the printed wiring board PCBA2 are connected by a flexible cable 20 so that signals can be exchanged.

  By the way, with the disk device configured as described above, the internal space of the chassis case 10 becomes very narrow due to the demand for thinning, and the flexible cable 20 cannot be flexed gently. For this reason, when the disk tray 2 enters the chassis case 10, the flexible cable 20 may come into contact with the opening of the chassis case 10. In this case, a portion of the flexible cable 20 that has lost its escape from the gap between the disk tray 2 and the chassis case 10 due to resistance due to contact with the chassis case 10 is pushed out of the apparatus and exposed as shown in FIG. 7B. May end up.

  When the disk tray 2 enters such a state and further enters the chassis case 10, there arises a problem that the exposed portion of the flexible cable 20 is sandwiched between the rear end portion of the disk tray 2 and the opening portion of the chassis case 10. . If the flexible cable 20 is sandwiched in this manner, the disc tray 2 may not be completely stored in the chassis case 10, and the flexible cable 20 may be damaged.

Therefore, the applicant of the present invention forms a reinforcing film on the surface of the flexible portion of the flexible cable 20 that can be deformed to improve the rigidity of this portion, and the flexible cable 20 is sandwiched between the disk tray 2 and the chassis case 10. (Patent Document 1).
Japanese Patent Laid-Open No. 11-144403

  Further, the applicant of the present invention observed the behavior of the flexible cable 20 when the disc tray 2 was entered into the chassis case 10 and focused on the contact of the flexible portion with the back surface of the disc tray 2. In other words, if the flexible cable 20 is held on the back surface of the disc tray 2, the flexible cable 20 can be prevented from being exposed to the outside of the apparatus, and a reinforcing film can be formed on the surface of the flexible part. The risk of damage to the flexible cable 20 can be avoided as in the case of forming.

  Therefore, the present invention solves the above problems by means described below. That is, according to the first aspect of the present invention, the disk tray loaded with the recording medium is moved forward / backward in the chassis case for loading / unloading, and the printed wiring board disposed on the disk tray and the chassis case is connected to the flexible cable. When the disk tray is unloaded, the flexible portion of the flexible cable is stuck and held on the back surface of the rear end portion of the disk tray.

  According to a second aspect of the present invention, in the first aspect of the present invention, an adhesive is applied or an adhesive tape is attached to the rear surface of the rear end of the disk tray and / or the flexible portion of the flexible cable.

  According to the first aspect of the present invention, since the flexible cable is held on the back surface of the rear end portion of the disk tray, the flexible portion of the flexible cable is exposed from between the disk tray and the chassis case. Therefore, damage to the flexible cable can be avoided.

  Further, according to the invention described in claim 2, it is possible to obtain an effect by applying an adhesive or attaching an adhesive tape, and the intended purpose can be achieved at a low cost.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, the same code | symbol is attached | subjected and demonstrated to the structure same as the past.

  FIG. 1 shows a disk apparatus 1 embodying the present invention, in which a disk tray 2 is formed in a shallow dish shape for accommodating an optical disk D, and is fixed to the drive shaft of a spindle motor 3 directly below in the center thereof. A turntable 4 is disposed, and a center hole of the optical disc D is clamped by a clamp head 5 of the turntable 4 so as to transmit a rotational force.

  Reference numeral 6 denotes a head unit, and the entire head unit reciprocates in the diameter direction of the disk tray 2 by a driving mechanism formed on the back surface of the disk tray 2, and a laser beam is irradiated onto the optical disk D from the objective lens 6a. A bezel 7 for trimming the exterior is mounted on the front end of the disc tray 2, and a push button 8 and an indicator 7a for releasing the loaded state of the disc tray 2 face the surface, and the disc tray 2 is loaded and locked. A through hole 7b for forcibly releasing the state is formed.

  Both sides of the disk tray 2 are supported by guide rails 9 in a loosely fitted state, and the guide rails 9 are side walls of the base chassis 11 of a chassis case 10 integrally formed with a base chassis 11 and a cover chassis 12. The disc tray 2 can be moved forward and backward within the chassis case 10 so as to be slidable on the support rail 13 fixed to the disc.

  FIG. 2 shows the arrangement of electrical components and mechanism elements formed on the back surface of the disc tray 2. A spindle motor 3 for rotating the optical disc D and a head unit 6 are arranged at the center of the disc tray 2. A drive mechanism A mainly composed of a sled motor 14 and a gear unit 15 serving as a power source for reciprocating in the radial direction of the optical disk is disposed. The head unit 6 usually includes an objective lens 6a and a mechanism element for driving the objective lens 6a on a carriage formed by die casting or the like, and an optical unit for guiding a laser beam emitted from the light emitting element 6b.

  A printed wiring board PCBA2 mounted with electronic components such as semiconductor integrated circuit elements S1 and S2 is disposed and fixed on the rear side of the disk tray 2, and an eject / lock mechanism B is provided at the corner of the front end corner of the disk tray 2. Is arranged. The bottom cover 16 is fixed to the back surface of the disk tray 2 configured in this way by screwing, and when the disk tray 2 is unloaded, the electrical components and machine elements incorporated on the back surface are not exposed to the outside. And the influence of static electricity and magnetism generated outside the disk tray 2 is prevented.

  A printed wiring board PCBA1 on which electronic components such as semiconductor integrated circuit elements S3 and S4 are mounted is disposed and fixed on the rear portion of the base chassis 11 of the chassis case 10. Further, the multi-connector MC1 is mounted on the printed circuit board PCBA1, and the multi-connector MC2 is mounted on the printed circuit board PCBA2.

  FIG. 3 is a diagram showing an example of the shape of the flexible cable 20 that connects the multi-connector MC1 of the printed wiring board PCBA1 and the multi-connector MC2 of the printed wiring board PCBA2, and the conductor pattern is covered with an insulating layer by screen printing technology. In general, polyimide, polyester, polyurethane, acrylic, etc. are employed as the material of this insulating layer, and since it is film-like and flexible, it is a suitable wiring material when connecting the fixed part and the movable part.

  In the present invention, the flexible cable 20 is formed in a U shape, the terminal electrode 21 formed at the end is connected to the multi-connector MC1 of the printed wiring board PCBA1, and the terminal electrode 22 is connected to the multi-connector MC2 of the printed wiring board PCBA2. Connect to. Therefore, when mounting on the chassis case 11 as shown in FIG. 1, the portion to be the fixing portion 20a of the flexible cable 20 is fixed on the chassis case 11 with an adhesive, and the portion to be the flexible portion 20b is folded back. Thus, the bending portion 20c is formed, and the flexible portion 20b and the bending portion 20c are deformed following the advance and retreat of the disc tray 2.

  In the above configuration, in the present invention, the adhesive W is applied to the position where the flexible portion 20b of the flexible cable 20 is in surface contact with the back surface of the disc tray 2, as shown in FIG. The adhesive W may be applied to the same position on the back surface of the disc tray 2 or may be applied to one or both of the surface contact portions. Moreover, it is also possible to stick an adhesive tape instead of an adhesive, and it can select arbitrarily.

  The behavior of the flexible cable 20 when the disk tray 2 is loaded / unloaded in the disk device 1 embodying the present invention will be described with reference to FIG. The process from FIG. 4A to FIG. 4G shows a state of loading the disc tray 2, and the process from FIG. 4G to FIG. 4A unloads the disc tray 2. Indicates the state to perform.

  FIG. 4A shows a state in which, after the disk tray 2 is unlocked by the eject / lock mechanism B, the disk tray 2 is pulled out to the maximum and the optical disk D can be loaded. At this time, the flexible portion 20b of the flexible cable 20 is also pulled out to the maximum, and the surface contact portion between the disk tray 2 and the flexible cable 20 is held by the adhesive force of the adhesive or the adhesive tape.

  FIG. 4B shows a state in which the disk tray 2 is slightly entered into the chassis case 10, and the flexible portion 20 b of the flexible cable 20 at the rear end of the disk tray 2 located at the opening of the chassis case 10. Is still held by the adhesive force, and the flexible portion 20b is not pushed out of the apparatus and exposed.

  4C to 4D show a state in which the disc tray 2 has further entered the chassis case 10, and the flexible portion 20 b of the flexible cable 20 gradually enters the back surface of the disc tray 2. Become.

  4E, the disc tray 2 further enters the chassis case 10 from the state of FIG. 4D, and the curved portion 20c of the flexible portion 20b of the flexible cable 20 is between the disc tray 2 and the flexible cable 20. When the disk tray 2 further enters the chassis case 10 as shown in FIG. 4 (F), the flexible cable stuck by the adhesive force of the adhesive or the adhesive tape. Peeling of the 20 flexible portions 20b begins.

  When the disc tray 2 finally fits in the chassis case 10 and the eject / lock mechanism B is activated and the disc tray 2 is held in the chassis case 10, the flexible cable is reached. The 20 flexible portions 20 b are completely peeled off from the back surface of the disc tray 2.

  Next, the behavior of the flexible cable 20 from when the disk tray 2 is unloaded to the state shown in FIG. When the eject / lock mechanism B is activated in the state of FIG. 4G where the optical disk D can be driven, the disk tray 2 pops out and stops in the state of FIG.

  In the state of FIG. 4F, a part of the flexible portion 20b of the flexible cable 20 comes into surface contact with the back surface of the disc tray 2, and the holding by the adhesive force is restored. As the disk tray 2 is unloaded and pulled out from the chassis case 10, the peeled flexible portion 20 b comes into contact with the back surface of the disk tray 2 again as shown in FIG. It is held by the adhesive strength of the agent or adhesive tape.

  When the disk tray 2 is further pulled out from the state shown in FIG. 4E to reach the state shown in FIG. 4D, the flexible portion 20b of the peeled flexible cable 20 is completely adhered to the back surface of the disk tray 2 with adhesive force. Retained. In this state, when the disc tray 2 is further pulled out as shown in FIG. 4A through the states of FIGS. 4C and 4B where the disc tray 2 is further pulled out. The flexible portion 20b of the flexible cable 20 is held by the adhesive force on the back surface of the disc tray 2, and this state is maintained.

  Since the present invention is configured as described above, the flexible portion 20b of the flexible cable 20 is reliably held on the back surface of the disk tray 2 in a state where the disk tray 2 is pulled out to the maximum extent. The problem that the flexible portion 20b is exposed from the gap between the disc tray 2 and the chassis case 10 can be reliably prevented, and damage to the flexible cable 20 can be prevented.

  The pressure-sensitive adhesive to be applied in the above embodiment can be either acrylic or rubber, and the pressure-sensitive adhesive tape is formed on a support in which silicone rubber (0.045 mm) and polyester film (0.025 mm) are laminated. As a result of adopting and experimenting with an acrylic adhesive applied, it was confirmed that the desired effect was obtained. In the above-described embodiment, the disk device is a disk device in which the disk tray is pulled out by manual operation. However, the present invention can also be applied to a disk device in which the disk tray is driven by a motor drive.

It is a perspective view of the disc apparatus which implemented this invention. It is a bottom perspective view of a disk tray of the disk device of the present invention. It is a perspective view of the flexible cable implemented by this invention. It is a figure explaining the behavior of the flexible cable in this invention. It is a perspective view of a notebook personal computer equipped with a disk device. It is a perspective view which shows the external appearance of a disc apparatus. It is a figure for demonstrating the malfunction of the conventional disc apparatus.

Explanation of symbols

1 .... Disk device 2 .... Disk tray 3 .... Spindle motor 4 .... Turn table 5 .... Clamp head 6 .... Head unit 7 .... Bezel 8 .... Push button 9 .... Guide rail 10 .... Chassis case 11 ....・ ・ ・ ・ Base chassis 12 ・ ・ ・ ・ ・ ・ Cover chassis 13 ・ ・ ・ ・ ・ ・ Support rail 14 ・ ・ ・ ・ ・ ・ Thread motor 15 ・ ・ ・ ・ ・ ・ Gear unit 16 ・ ・ ・ ・ ・ ・ Bottom Cover 20 ··· Flexible cable 20a ··· Fixed portion 20b ··· Flexible portion 20c ··· Curved portion PCBA1 ··· Printed wiring board PCBA2 ··· Printed wiring board MC1 ... Multi-connector MC2 ... ... Multi-connector

Claims (2)

In a disk apparatus in which a disk tray loaded with a recording medium is moved forward / backward in a chassis case to be loaded / unloaded, and a printed wiring board disposed in the disk tray and the chassis case is connected by a flexible cable.
A disk device characterized in that when the disk tray is unloaded, the flexible portion of the flexible cable is stuck and held on the back surface of the rear end portion of the disk tray.   2. The disk device according to claim 1, wherein an adhesive is applied or an adhesive tape is attached to the back surface of the rear end of the disk tray and / or the flexible part of the flexible cable.

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