JP2009093692A - Optical disk device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an optical disk device which prevents a traverse part of a flexible flat cable drawn to the side of a main chassis from a relay wiring substrate or the like of a traverse chassis from being twisted or bent to the main wiring substrate side, thereby facilitating fixing of the main wiring substrate, and preventing the flexible flat cable from being broken. <P>SOLUTION: The optical disk device is configured so that the flexible flat cable 6 is drawn to the side of the main chassis from the relay wiring substrate or the like of the traverse chassis, hooked to a lower part hook part 1e of a main chassis side wall 1d, further the flexible flat cable 8 is drawn to a traverse direction along the main chassis side wall 1d, an upper edge of the traverse part 6c of the flexible flat cable 6 is inserted into a gap between an engaging part 1f formed on an upper part of the main chassis side wall 1d and the side wall 1d and engaged to an engaging part 1e. Twisting and bending of the cable traverse part 6c are prevented by the engaging part 1e. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an optical disc apparatus such as a DVD or a CD, and more particularly to an optical disc apparatus improved so that a flexible flat cable drawn out from a relay wiring board or the like attached to a traverse chassis to the side of a main chassis is not disconnected.

  As shown in FIG. 7, the conventional optical disk apparatus has a main wiring arranged adjacent to the main chassis 1 at the end of the flexible flat cable 6 drawn out from the relay wiring board of the traverse chassis to the side of the main chassis 1. When connecting to the board 13, the flexible flat cable 6 drawn out to the side of the main chassis 1 is hooked on a hook portion 1 e formed at the lower part of the side wall 1 d of the main chassis 1, and the flexible flat cable 6 is further connected to the main chassis 1. The leading end of the flexible flat cable 6 is connected to the main wiring board 13 along the side wall 1d.

On the other hand, as a cable holding means for holding a wire such as a flat cable for connecting the control board to a power supply board or another control board, a disk device having a plurality of wire processing units provided at the lower part of the side wall of the frame is proposed. (Patent Document 1).
JP 2005-235262 A

  However, since the conventional optical disk apparatus shown in FIG. 7 only hooks the flexible flat cable 6 to the hook portion 1e at the lower side of the side wall of the main chassis 1 and stops it at one place, it can be moved horizontally along the side wall 1d of the main chassis 1. The transverse portion 6c of the flexible flat cable drawn in the direction does not fit perfectly with the side wall 1d of the main chassis 1, and the transverse portion 6c of the flexible flat cable is located on the main wiring board 13 side as shown by a virtual line in FIG. Since it is twisted or bent, this traversing portion 6c becomes an obstacle, and it becomes difficult to fix the main wiring board 13 to a supporting metal plate (not shown) with a screw (not shown). In this case, the transverse portion 6c of the flexible flat cable and the portion ahead thereof are sandwiched between the main wiring board 13 and the screw head and disconnected. There was.

  Such a problem similarly occurs in a disk apparatus in which a plurality of line processing units are provided below the side walls of the frame as cable holding means for holding a wire such as a flat cable, as in Patent Document 1.

  The present invention has been made under the above circumstances, and the problem to be solved is that the transverse portion of the flexible flat cable drawn out from the relay wiring board of the traverse chassis to the side of the main chassis is twisted to the main wiring board side. An object of the present invention is to provide an optical disc apparatus that is easy to fix a main wiring board adjacent to a main chassis and that does not have to worry about disconnection of a flexible flat cable.

  In order to solve the above problems, an optical disc apparatus according to the present invention draws a flexible flat cable from a relay wiring board or the like attached to a traverse chassis to the side of the main chassis made of synthetic resin, and is placed under the side wall of the main chassis. The flexible flat cable is hooked on the formed hook part, and the flexible flat cable is routed laterally along the side wall of the main chassis, and the tip of the flexible flat cable is connected to the main wiring board arranged adjacent to the main chassis. In the optical disc apparatus, an engaging portion is formed on the upper portion of the side wall of the main chassis with a gap between the outer side surface of the main chassis and the flexible flat cable routed laterally along the side wall of the main chassis. Fit the upper edge of the transverse part into the gap between the engaging part and the outer surface of the side wall In is characterized in that is engaged with the engaging portion.

  In the optical disk apparatus of the present invention, it is desirable to form a guide slope inclined at the engagement portion so as to approach the outer surface of the side wall of the main chassis as it approaches the lower end. And it is desirable to make the space | interval of the horizontal direction of the said engaging part and the said hook part smaller than the space | interval of the vertical direction of the said engaging part and the said hook part.

  Further, in the optical disk device of the present invention, the molding part integrally molded on the upper outer side of the side wall of the main chassis, the lower surface of the molding part protruding from below by the protruding pin at the time of demolding, It is desirable to form the engaging portion.

  As in the optical disc apparatus of the present invention, the upper edge of the transverse portion of the flexible flat cable (hereinafter referred to as the cable transverse portion) that is routed laterally along the side wall of the main chassis is located above the side wall of the main chassis. When inserted into the gap between the formed engaging portion and the outer surface of the side wall and engaged with the engaging portion, the upper edge of the cable traversing portion is stopped from being separated from the side wall of the main chassis by the engaging portion. Therefore, the cable traversing portion is prevented from being twisted or bent toward the main wiring board side along the side wall of the main chassis. Therefore, when the main wiring board is fixed with screws, the cable traversing part does not get in the way, so that the fixing work of the main wiring board is facilitated and the work efficiency is improved, and the cable traversing part and the part beyond it are the main wiring. The fear of disconnection between the board and the screw head is also eliminated.

  When the guide slope is formed in the engaging portion so as to be closer to the outer surface of the side wall of the main chassis as it approaches the lower end, the upper edge of the cable traversing portion is applied to the guide slope and pushed. Thus, the upper edge of the cable traversing part can be easily fitted into the gap between the engaging part and the outer surface of the side wall.

  In addition, when the lateral distance between the engaging portion and the hook portion is too large, the cable traverse portion is bent by its own weight with the hook portion as a fulcrum, and the upper edge thereof is easily detached from the engaging portion. When the horizontal interval between the joint portion and the hook portion is smaller than the vertical interval between the engagement portion and the hook portion, the engagement portion is engaged with the engagement portion from the portion supported by the hook portion. Since the amount of flexure of the flexible flat cable to the portion where the cable is bent is very small, there is no fear that the upper edge of the cable traversing portion is detached from the engaging portion.

  Further, when the engaging portion is formed on the lower surface of the molding portion that is integrally molded on the upper outer side of the side wall of the main chassis and protrudes from below by the protruding pin at the time of demolding. Since the cylindrical boss-shaped engaging portion having the above-described guide slope can be formed by simply cutting the tip of the protruding pin obliquely, it is not necessary to change the molding die substantially, thereby preventing an increase in cost. It becomes possible.

  Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a plan view of an optical disc apparatus according to an embodiment of the present invention, FIG. 2 is a schematic bottom view of the optical disc apparatus, FIG. 3 is a perspective view of essential parts of the optical disc apparatus, and FIG. FIG. 5 is a cross-sectional view taken along line AA of FIG. 3, and FIG. 6 is a schematic cross-sectional view of a traverse chassis on which the optical pickup and turntable of the optical disk apparatus are mounted.

  As shown in FIGS. 1 and 2, this optical disk apparatus has a synthetic resin traverse chassis 2 inside a synthetic resin main chassis 1 and mounting screws 7a and rubber dampers 7b on both sides of the rear end thereof. As shown in FIGS. 1 and 6, a turntable 3 that is rotated by a spindle motor M is provided at the front end portion of the traverse chassis 2, and is located behind the turntable 3 of the traverse chassis 2. An optical pickup 4 is mounted on each side. As shown in FIGS. 2 and 6, a relay wiring board 12 is attached to the lower surface of the traverse chassis 2, and the flexible flat cable 6 is drawn out from the relay wiring board 12 to the side of the main chassis 1. The routing of the flexible flat cable 6 will be described in detail later.

  The turntable 3 is fixed to the output shaft of a spindle motor M attached to the front end of the traverse chassis 2, and when the traverse chassis 2 rotates upward, the turntable 3 and the clamper 9 directly above the turntable 3. (See FIG. 1), the optical disc is rotated with the center opening edge of the optical disc sandwiched therebetween. As shown in FIG. 1, the clamper 9 is rotatably held by a clamper holding portion 1b at the center of a bridge portion 1a formed integrally with the main chassis 1.

  The optical pickup 4 is mounted so as to move in the front-rear direction (direction approaching or moving away from the turntable 3) along the guide shafts 5 and 5 by a pinion 8 meshing with the rack 4a. The optical disk is irradiated with a laser beam from the objective lens 4b while approaching the turntable 3 to perform recording / reproduction. The flexible flat cable of the optical pickup 4 is also pulled out to the side of the main chassis 1, but is not shown in FIGS. 1, 2, and 6.

  The front end of the traverse chassis 2 is formed with two convex portions 2c and 2d protruding forward, and a synthetic resin cam slider 10 having cam grooves 10a into which the convex portions 2c and 2d are respectively inserted. The main chassis 1 is attached to the front frame 1c so as to be slidable left and right. When the rack 10b at the right end of the cam slider 10 is engaged with the drive pinion 11 and the cam slider 10 slides in the left direction L, the convex portions 2c and 2d of the traverse chassis 2 descend while sliding in the cam groove. Therefore, the traverse chassis 2 rotates downward, and when the cam slider 10 slides in the right direction R, the traverse chassis 2 rotates upward.

  Further, a disc tray (not shown) on which an optical disc is loaded and inserted is disposed between the traverse chassis 2 and the clamper 9 and is slidably attached to the inside of the main chassis 1 in the front-rear direction. When the pinion meshes with the rack on the back of the disk tray and rotates, the disk tray is inserted and ejected.

  In the above optical disk apparatus, in the closed state of FIG. 1 in which the optical disk is placed on the disk tray and inserted, the traverse chassis 2 rises, the optical disk is sandwiched between the turntable 3 and the clamper 9 and rotates, and the optical pickup 4 While moving toward the turntable 3 along the guide shafts 5 and 5, the optical disk is irradiated with a laser beam, and recording / reproduction is performed. When recording / reproduction on the optical disk is completed, the rack 10b of the cam slider 10 is engaged with the drive pinion 11, the cam slider 10 slides in the left direction L, and the traverse chassis 2 rotates downward to turn the turntable 3. The chuck of the optical disk by the clamper 9 is released, and the optical disk is placed on the disk tray and ejected.

  A major feature of this optical disk apparatus is the routing of the flexible flat cable 6 from the relay wiring board 12 and the means for fixing it. In other words, this optical disk apparatus is such that the flexible flat cable 6 of the relay wiring board 12 is routed so that it can be connected to the main wiring board 13 disposed adjacent to the main chassis 1. As shown in FIG. 4, the flexible flat cable 6 drawn out from the relay wiring board 12 to the side of the main chassis 1 is bent upward along the outer surface of the side wall 1d of the main chassis 1, and this cable bent portion 6a is connected to the main cable. The chassis 1 is hooked and stopped by a lateral L-shaped hook portion 1e formed at the lower portion of the side wall 1d of the chassis 1. Then, the flexible flat cable 6 is folded so as to be bent at a right angle on the upper side of the cable folding part 6a, and the cable traversing part 6c from the cable folding part 6b is placed along the outer surface of the main chassis side wall 1d. The leading portion of the cable traversing portion 6 c is further folded upward and is bent toward the main wiring board 13 to connect the tip of the flexible flat cable 6 to the main wiring board 13.

  As shown in FIGS. 3, 4, and 5, an engaging portion 1 f is formed on the upper portion of the side wall 1 d of the main chassis 1 with a gap between the outer surface of the side wall 1 d, and in this gap The upper edge of the cable traversing portion 6c of the flexible flat cable 6 is fitted and engaged with the engaging portion 1f. The engaging portion 1f has a cylindrical boss shape, and protrudes from the lower surface of a screwed boss portion 1g integrally formed on the outer side of the upper portion of the side wall 1d. A guide slope 1h is formed so as to approach the outer surface of the side wall 1d of the main chassis 1 as it gets closer.

  As described above, the upper edge of the cable traversing portion 6c of the flexible flat cable 6 is inserted into the gap between the engaging portion 1f formed on the upper portion of the side wall 1d of the main chassis 1 and the outer surface of the side wall 1d to be engaged. When engaged with the portion 1f, the upper edge of the cable traversing portion 6c is stopped by the engaging portion 1f so as not to be separated from the side wall 1d of the main chassis 1, so that the cable traversing portion 6c is attached to the side wall 1d of the main chassis 1. It is possible to prevent the main wiring board 13 from being twisted or bent along the right side. Accordingly, when the main wiring board 13 is fixed with screws, the cable traversing portion 6c and the portion ahead thereof do not get in the way, so that the main wiring board 13 can be easily fixed, and the working efficiency is improved. The fear that the wire 6c and the portion ahead will be pinched between the main wiring board 13 and the screw head is also eliminated.

  Since the screwing boss 1g is an existing molding part that is originally molded on the upper outer side of the side wall 1d of the main chassis 1, and is a molding part that is projected from below by a projecting pin at the time of demolding. When projecting the engaging portion 1f on the lower surface of the screwing boss 1g, the guide inclined surface 1h can be formed by substantially cutting the tip of the protruding pin diagonally without changing the molding die. It is possible to easily form the cylindrical boss-shaped engaging portion 1 f having the advantage of preventing an increase in cost.

  Further, when the guide slope 1h is formed in the engaging portion 1f, the upper edge of the cable traversing portion 6c can be easily moved by simply pressing and pushing the cable traversing portion 6c onto the guide slope 1h. There is an advantage that the engaging portion 1f can be engaged with the engaging portion 1f by being fitted in the gap between the engaging portion 1f and the outer surface of the side wall 1d.

  The lateral distance between the engaging portion 1f and the hook portion 1e is not limited, but if the distance is too large, the cable transverse portion 6c bends by its own weight with the hook portion 1e as a fulcrum, and the upper edge of the cable transverse portion 6c is Since it becomes easy to disengage from the engaging portion 1f, it is desirable that the horizontal interval between the engaging portion 1f and the hook portion 1e is smaller than the vertical interval between the engaging portion 1f and the hook portion 1e. Specifically, it is appropriate to set the horizontal interval to about 3 to 20 mm. Since the amount of bending of the flexible flat cable (cable traversing portion 6c) from the portion supported by the hook portion 1e to the portion engaging with the engaging portion 1f is very small, the cable traversing There is no fear that the upper edge of the portion 6c is detached from the engaging portion 1f.

As described above, the optical disk apparatus of the present invention has been described with the embodiment in which the flexible flat cable 6 is routed from the relay wiring board 12 and connected to the main wiring board disposed adjacent to the main chassis 1. The present invention is not limited to this embodiment. For example, the present invention can be similarly applied to a case where a flexible flat cable is routed from an optical pickup and connected to the main wiring board.
Further, the shape of the engaging portion 1f can be variously changed, and the place where the engaging portion is provided is not limited to the lower surface of the screwing boss portion 1g, but is directly provided on the upper outer surface of the side wall 1d of the main chassis 1. Of course.

1 is a plan view of an optical disc apparatus according to an embodiment of the present invention. It is a schematic bottom view of the same optical disk device. It is a principal part perspective view of the same optical disk device. It is the principal part perspective view looked up from diagonally downward of the same optical disk device. FIG. 4 is a sectional view taken along line AA in FIG. 3. It is a schematic sectional drawing of the traverse chassis which mounts the optical pick-up and turntable of the optical disk device. It is a fragmentary perspective view of the conventional optical disk apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main chassis 1d Side wall 1e Hook part 1f Engagement part 1g Screw stop boss part 1h Guide slope 2 Traverse chassis 3 Turntable 4 Optical pickup 6 Flexible flat cable 6a Cable bending part 6b Cable folding part 6c Cable transverse part 9 Clamper 10 Cam slider 12 Relay wiring board 13 Main wiring board

Claims (4)

Pull out the flexible flat cable from the relay wiring board attached to the traverse chassis to the side of the main chassis made of synthetic resin, hook it on the hook formed at the bottom of the side wall of the main chassis, and then attach the flexible flat cable to the main chassis In the optical disk apparatus in which the leading end of the flexible flat cable is connected to the main wiring board disposed adjacent to the main chassis in the lateral direction along the side wall of
On the upper part of the side wall of the main chassis, an engaging portion is formed with a gap between the outer surface of the side wall and above the transverse part of the flexible flat cable routed laterally along the side wall of the main chassis. An optical disc apparatus, wherein an edge is fitted into a gap between an engaging portion and an outer surface of a side wall to be engaged with the engaging portion.   2. The optical disc apparatus according to claim 1, wherein a guide slope is formed in the engagement portion so as to approach the outer surface of the side wall of the main chassis as it approaches the lower end.   3. The optical disc apparatus according to claim 1, wherein a horizontal interval between the engaging portion and the hook portion is smaller than a vertical interval between the engaging portion and the hook portion. .   The engaging portion is formed on the lower surface of the molding portion that is integrally formed on the upper outer side of the side wall of the main chassis, and is protruded from below by the protruding pin at the time of demolding. 4. The optical disc apparatus according to claim 1, wherein the optical disc apparatus is characterized in that:

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