JP2012234588A - Optical disk device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical disk device preventing falling of a lock arm caused by disengagement of locking between the lock arm and a disk guide member.SOLUTION: The optical disk device includes: a main chassis including an opening part for inserting an optical disk; a cover chassis for covering the upper part of the main chassis; a disk guide member attached to the cover chassis for guiding the inserted optical disk; a rotational arm for moving the optical disk guided by the disk guide member, to a disk reading position; and the lock arm rotationally supported by locking one end thereof to a notch provided in the disk guide member and rotationally supporting the rotational arm by inserting the other end thereof into a guide groove provided in the rotational arm. A hardfacing part is formed at a part of the notch of the disk guide member.

Description

  The present invention relates to an optical disk device such as a CD and a DVD, and more particularly to an optical disk device improved so as to prevent a disk lever from falling off the optical disk device.

  In an optical disc apparatus using an optical disc such as a CD (Compact Disc), DVD (Digital Versatile Disc), or BD (Blu-Ray Disc) as a recording medium, the laser beam emitted from the optical pickup is condensed on the recording surface of the optical disc. Data is recorded by irradiation and / or information is reproduced by detecting laser light irradiated and reflected on the recording surface.

  2. Description of the Related Art Conventionally, there is a slot-in type optical disk device that carries an optical disk as it is. In such an optical disk apparatus, a transport roller and a disk guide member are provided in the vicinity of a disk insertion slot into which an optical disk is inserted, and the inserted optical disk is transported by the transport roller while being guided by the disk guide member.

  Further, the conventional optical disk apparatus is provided with a rotation arm that regulates the position of the optical disk by rotating with the movement of the optical disk, and moves the optical disk conveyed by the conveyance roller to the disk reading position.

  The rotation arm is supported rotatably by inserting one end of the lock arm into a groove provided in the rotation arm, while the lock arm is engaged with the other end of the lock arm and the disk guide member. Is supported by being.

  By the way, in the conventional optical disk apparatus, when an impact is applied to the optical disk apparatus due to dropping or the like, the lock arm and the disk guide member are disengaged and the function as the optical disk apparatus may be lost.

  In the disk loading device described in Patent Document 1, a predetermined portion (the disk is a surface runout disk) on the lower surface side (disk side) near the left and right ends of the flap 1 and near the outer peripheral edge of the disk during disk playback. In such a case, it is disclosed to delete a portion that interferes with the outer peripheral edge of the disc during reproduction. As a result, even if the surface runout disc is reproduced, it does not interfere with the flap 1.

  The optical disc apparatus described in Patent Document 2 has a tapered shape having a gradient that approaches the optical disc Ds by moving away from the center line of the flap portion 42 on the surface of the flap portion 42 (disc guide member) on which the optical disc Ds slides. It is disclosed that the rib 422 is erected. As a result, the shaking of the optical disk Ds when the optical disk Ds is ejected can be suppressed.

JP 2006-351078 A JP 2007-207371 A

  However, the disk loading device described in Patent Document 1 and the optical disk device described in Patent Document 2 do not disclose any configuration that prevents the lock arm and the disk guide member from being unlocked. .

  In view of the above-described problems, an object of the present invention is to provide an optical disc apparatus that prevents the lock arm from falling off due to the lock arm and the disc guide member being disengaged.

  In order to achieve the above object, an optical disc apparatus according to the present invention includes a main chassis having an opening for inserting an optical disc, a cover chassis that covers an upper portion of the main chassis, and an optical disc that is attached to and inserted into the cover chassis. A disc guide member that guides the disc, a pivot arm that moves the optical disc guided by the disc guide member to a disc reading position, and a pivot that is engaged by a notch provided in the disc guide member. An optical disc apparatus comprising: a lock arm that is supported so that the other end is inserted into a guide groove provided in the pivot arm, and that pivotally supports the pivot arm; A built-up part is formed in a part of the notch part of the member.

  According to this configuration, the built-up portion is formed in a part of the notch portion of the disk guide member to which the end portion of the lock arm is locked, and the lock arm tries to rotate beyond the rotatable region. Sometimes, the lock arm does not rotate beyond the pivotable region in contact with the overlay. Accordingly, it is possible to prevent the lock arm from falling off due to the lock arm and the disc guide member being unlocked.

  In the optical disk apparatus having the above configuration, it is preferable that the build-up portion is formed at a corner portion of the notch portion of the disk guide member.

  According to this configuration, since the build-up portion is formed at the corner portion of the notch portion, while securing the pivotable region of the lock arm (without excessively limiting the pivotable region of the lock arm) Further, it is possible to prevent the lock arm from falling off due to the lock arm and the disc guide member being unlocked.

  In the optical disk apparatus having the above-described configuration, it is preferable that the build-up portion is formed to protrude toward the outside of the notch portion.

  According to this configuration, since the built-up portion is formed at the corner portion of the notch portion so as to protrude toward the outside of the notch portion, it is possible to secure the rotation area of the lock arm (the rotation of the lock arm). Without restricting the movable region excessively), it is possible to prevent the lock arm from falling off due to the lock arm and the disc guide member being unlocked.

  In the optical disk apparatus having the above-described configuration, it is preferable that the lock arm includes a shaft that is locked to the notch portion of the disk guide member, and a resin member is attached to a tip portion of the shaft.

  According to this configuration, since the lock arm does not resonate when a force is applied to the optical disc apparatus when the optical disc is inserted and ejected, it is possible to prevent the generation of noise.

  According to the present invention, since the build-up portion is formed on the disk guide member, the lock arm and the disk guide member are not unlocked, so that the lock arm can be prevented from falling off.

These are figures which show the structure of one Embodiment of the optical disk apparatus of this invention. These are the perspective views which show the whole structure of the lock arm with which the optical disk apparatus of this invention is provided. These are the perspective views which show the whole structure of the disc guide member with which the optical disc apparatus of this invention is provided.

  The optical disk device of the present invention will be described below with reference to the drawings. However, the embodiment described below shows an example of the optical disk apparatus of the present invention in order to embody the technical idea of the present invention, and is not intended to specify the present invention to this optical disk apparatus. Rather, it is equally applicable to the apparatus of other embodiments within the scope of the claims.

  In the following description, “front and back” are directions parallel to the disc insertion direction, and the front side in the insertion direction is “front” and the rear side in the insertion direction is “rear”. Further, “upper and lower” means that the label surface side (printing surface of characters, images, etc.) of the optical disk inserted into the optical disk apparatus is “upper” and the recording surface side is “lower”. Further, “left and right” means that the left hand side of the observer facing the optical disk device when the label surface of the optical disk is facing up is “left” and the right hand side is “right”.

  FIG. 1 is a diagram showing the structure of an embodiment of an optical disc apparatus according to the present invention. The optical disk device 50 is provided so as to cover a main chassis 51 having a disk insertion slot 51a into which an optical disk Ds is inserted on the front surface, a lifting chassis (not shown) attached to the main chassis 51 so as to be movable up and down, and an upper part of the main chassis. The cover chassis 53 and the disc guide member 55 are provided.

  The main chassis 51 is an integrally molded product of resin, and is a box having a rectangular shape in plan view. The main chassis 51 includes the above-described disk insertion port 51a, screwing ribs 51b for screwing, and a transport roller (not shown) that is disposed on the inner side of the disk insertion port 51a and transports the optical disk Ds. A female screw hole into which a screw Bt for screwing the cover chassis 53 is screwed is formed in the screw fixing rib 51b.

  In the optical disk device 50 of the present embodiment, two screwing ribs 51b are formed in the vicinity of the front end corner of the cover chassis 51, two in the vicinity of the rear end corner, and one in the substantially central portion of the rear end. However, the number and location of the cover chassis 53 that can securely fix the cover chassis 53 can be widely used. However, it is desirable to form at least two near the front corner of the cover chassis 51 and one or more near the rear corner.

  The lifting chassis rises to lift the optical disc Ds when the optical disc Ds has been transported to a predetermined position, and descends when the optical disc Ds is unloaded. The elevating chassis includes a disk drive mechanism that holds the optical disk Ds from below and rotationally drives it, and an optical pickup that irradiates the optical disk Ds with light for recording or reproduction (all not shown).

  The cover chassis 53 is formed by integral molding of resin. The cover chassis 53 has an opening 53a that is open so that a guide plate 40, which will be described later, is exposed on the rear side of the upper surface, and a screw Bt that penetrates the screw Bt so as to correspond to the screwing rib 51 for screwing the main chassis 51. A hole 53b is formed, and is fixed by a screw Bt so as to cover the upper portion of the main chassis 51.

  A disc guide member 55 is attached to the lower surface side (inner side of the optical disc device 50 main body) and the front side of the cover chassis 53, and the optical disc Ds inserted from the disc insertion port 51a is brought into contact with the transport roller by the disc guide member 55. Move while being guided by.

  Further, a sheet metal guide arm 40, a sheet metal lock arm 56 having a rotation shaft 56a, and a sheet metal rotation arm 57 having a rotation shaft 57a are attached to the cover chassis 53. The guide plate 40 is provided with a slide portion 46 that slides on the slot-shaped guide slit 44 by being pushed by the optical disc Ds inserted from the disc insertion opening 51a. The slide portion 46 is inserted into a guide groove 57 c formed at one end of the rotating arm 57 and slides through the guide slit 44.

  The rotation arm 57 is configured to be able to rotate about the rotation shaft 57a, but is supported by the lock arm 56 so as to be rotatable to a predetermined angle range as will be described later. Therefore, when the optical disk Ds is inserted and the slide portion 46 slides on the guide slit 44 and the rotation arm 57 rotates, the lock arm 56 moves the rotation arm 57 when the rotation arm rotates to a predetermined angle. The rotation is stopped, and the slide of the slide portion 46 is also stopped accordingly. As a result, the optical disk Ds can be moved to the disk reading position.

  Further, the cover chassis 4 is provided with a clamper 54 that is rotatably supported. The clamper 54 sandwiches the optical disk Ds lifted to the turntable (not shown) by the raising of the lifting chassis with the turntable.

  Thus, the optical disk Ds is supported by the turntable and the clamper 54 so as not to come into contact with other members. In this state, the optical disk Ds can be rotated at a high speed, and light can be irradiated from the optical pickup to record information on the optical disk Ds or to reproduce information recorded on the optical disk Ds.

  FIG. 2 is a perspective view showing the overall configuration of the lock arm provided in the optical disc apparatus of the present embodiment. As shown in FIG. 2, the lock arm 56 has a rotation shaft 56 b and is attached to the cover chassis 53. In the lock arm 56, a hook portion 56e is provided in the vicinity of the rotation shaft 56b, and a coil spring 59 for connecting the hook portion 56e and a hook portion 53e formed by cutting and raising the guide plate 40 as shown in FIG. The lock arm 56 is configured to be able to rotate around a rotation shaft 56a by utilizing elastic force due to expansion and contraction.

  Shafts 56 b and 56 c are formed at both ends of the lock arm 56. The shaft 56b is inserted into the guide groove 57b of the rotation arm 57, and supports the rotation arm 57 so as to be rotatable about a rotation axis 57a to a predetermined angle range. On the other hand, the shaft 56c is locked to a notch (details will be described later) formed in the disk guide member 55, whereby the lock arm 56 is rotatably supported by the disk guide member 55.

  Conventionally, an elastic member such as rubber is attached to the upper portion of the lock arm 56, and the lock arm 56 resonates when force is applied to the optical disc apparatus 50 when the optical disc is inserted and ejected by the elastic member. However, it is desirable not to attach an elastic member such as rubber on the upper portion of the lock arm 56 in order to reduce the thickness of the device itself in recent years. On the other hand, if the elastic member is simply removed, the above-described noise is generated.

  Therefore, in FIG. 2, the shaft 56c has a resin member 56d attached to the tip thereof. As a result, it is possible to prevent the lock arm 56 from resonating and generating noise when a force is applied to the optical disk device 50 during insertion and ejection of the optical disk.

  In the present embodiment, the resin member 56d is attached to the tip of the shaft 56c that is locked to the notch formed in the disc guide member 55. However, the resin member 56d may be attached to the tip of the shaft 56b, and the shaft 56b and It is good also as attaching to 56c together. Moreover, although it is set as the resin member in this embodiment, it is good also as attaching an elastic member.

  FIG. 3 is a perspective view showing the overall configuration of the disc guide member provided in the optical disc apparatus of the present embodiment. The disk guide member 55 is a rectangular plate-shaped member.

  As described above, the disk guide member 55 guides (guides) the optical disk Ds inserted from the optical disk insertion port 51a so as to come into contact with the transport roller. As shown in FIG. 3, the optical disc contact surface 55e of the disc guide member 55 is formed to be inclined toward the insertion port 51a of the optical disc Ds (the direction P in the figure is the insertion direction of the optical disc Ds). The structure is such that the position of the optical disc Ds is regulated as it is inserted.

  Note that the optical disk contact surface 55e of the disk guide member 55 is formed by mirror finishing, and can smoothly guide the optical disk Ds to the transport roller side when the optical disk Ds comes into contact.

  A cutout portion 55a is formed in the substantially central portion of one of the side end portions of the disc guide member 55 by cutting out the disc guide member 55 into a concave shape. The shaft of the lock arm 56 (the shaft 56c in FIG. 2) is engaged with the notch 55a.

  The disk guide member 55 is formed in the cover chassis 53 so that the lower surface of the cover chassis 53 and the mounting surface 55f of the disk guide member 55 are in contact with each other and the holes 55g, 55h, 55i provided in the disk guide member 55 and the corresponding holes. Since a screw is inserted into a provided hole (not shown) and attached (fixed) to the cover chassis 53, the shaft 56c of the lock arm 56 is notched in the disc guide member 55 from the attachment surface 55f side. 55a is fitted and locked.

  That is, since the disc guide member 55 is attached so that the optical disc contact surface 55e faces downward when attached to the cover chassis 53, the cutout portion 55a in the present embodiment is on the left side when attached to the cover chassis 53. The end portion is formed at a substantially central portion.

  A built-up portion 60 that is built up (projected) toward the outside of the cut-out portion 55a is formed integrally with the disc guide member 55 at the corner portion 55b of the cut-out portion 55a. When the lock arm 56 rotates about the rotation shaft 56a, the shaft 56c contacts the build-up portion 60, and the rotation of the lock arm 56 is stopped. Accordingly, the lock arm 56 can be prevented from falling off due to the lock arm 56 and the disc guide member 55 being unlocked by rotating the lock arm 56 beyond the rotatable region.

  The thickness of the built-up portion 60 is not particularly limited, and can be arbitrarily determined within a range in which the lock arm 56 does not rotate beyond the rotatable region. However, since the entire optical disc device 50 is increased in size as the build-up portion 60 becomes thicker, it is desirable to make it as thin as possible, and it is desirable to build up 0.2 mm to 0.5 mm. Further, the shape of the built-up portion 60 is not particularly limited.

  In the present embodiment, the build-up portion 60 is formed at the corner portion 55b of the notch 55a. However, it is formed at a position where the shaft 56c of the lock arm 56 contacts when the optical disc Ds is moved to the disc reading position. If so, it is not limited to this. For example, it is good also as forming in the internal peripheral surface of the notch part 55a.

  Further, in this embodiment, the built-up portion 60 is formed so as to be built up (projected) toward the outside in order to secure the rotatable area of the lock arm 56, but can secure the rotatable area. If so, it may be formed so as to be built up (projected) toward the inside of the cutout portion 55a.

  The present invention can be used in an optical disc apparatus including a lock arm and a disc guide member.

50 Optical disk device 55 Disk guide member 56 Lock arm 56b, 56c Shaft 57 Rotating arm 60 Overlaying portion

Claims (4)

A main chassis having an opening for inserting an optical disc;
A cover chassis covering the top of the main chassis;
A disc guide member that is attached to the cover chassis and guides the inserted optical disc;
A rotating arm that moves the optical disk guided by the disk guide member to a disk reading position;
One end is supported by a notch provided in the disk guide member so as to be rotatable, and the other end is inserted into a guide groove provided in the rotating arm to A lock arm that is pivotally supported;
An optical disc device comprising:
An optical disc apparatus, wherein a built-up portion is formed in a part of the notch portion of the disc guide member.   2. The optical disc apparatus according to claim 1, wherein the build-up portion is formed at a corner portion of the notch portion of the disc guide member.   The optical disc apparatus according to claim 2, wherein the build-up portion is formed to protrude toward the outside of the notch portion.   The said lock arm is provided with the shaft latched by the said notch part of the said disk guide member, The resin member is attached to the front-end | tip part of this shaft, The Claim 1 characterized by the above-mentioned. 2. An optical disk device according to item 1.