JP2006155807A - Disk device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To mitigate collision sound and impacts when a disk tray pulled out from a surrounding assembly as a chassis stops, and to accurately stop a disk tray at a retreat position. <P>SOLUTION: A disk device is provided with the surrounding assembly 1 and the disk tray 3, and is provided with a stopper mechanism A for regulating the retreat position of the disk tray pulled out to the outside of the surrounding assembly 1. The stopper mechanism A is provided with an abutting surface 7 on the side of the disk tray 3 and a receiving piece 5 on the side of the surrounding assembly 1. The abutting surface 7 includes an inclined surface part 62 for sliding and elastically deforming the receiving piece 5 after engagement and a locking surface part 31a for locking the receiving piece 5 slid by the inclined surface part. The locking surface part 31a is formed by a part of the side face 31 of the disk tray 3, and the opening angle θ of the inclined surface part 62 and the locking surface part 31a is determined to be 45 degrees preferably. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a disk device, and more particularly to a disk device in which measures are taken to reduce a collision sound when a disk tray pulled out of an enclosure stops.

  In a disk device such as a DVD player, a disk is carried into an enclosure as a chassis on which an element such as an optical pickup necessary for recording / reproduction processing on a disk recording surface is mounted between the inside and the outside of the enclosure. The disc tray is slidably attached, and is provided with a retreat position restricting means for restricting the retreat position of the disc tray drawn out of the enclosure.

  Conventionally, there has been one that employs an electrical control method as the backward position restricting means. In this case, the switch detects that the disk tray has been pulled out to the position immediately before the retracted position, and the rotation of the motor as a drive source for retracting the disk tray is stopped by the detection signal. In addition, in this case, in order to prevent a situation in which the disc tray is further pulled out from an appropriate retracted position, there is also a safety measure in which an engaging claw provided on the disc tray is locked to a receiving piece provided on the enclosure. Was taken.

  On the other hand, it has been attempted to omit the switch by adopting only a mechanically operated stopper mechanism instead of employing the electrical control method as described above as the backward position restricting means. The stopper mechanism A is shown in a schematic plan view in FIG.

  The stopper mechanism A shown in FIG. 1 includes a receiving piece 5 provided on the enclosure 1 and an engaging claw 6 provided on the disc tray 3 side, and an engaging claw with respect to the backward direction Y of the disc tray 3. 6, in other words, the opening angle θ <b> 1 of the end surface 61 of the engaging claw 6 with respect to the side surface 31 of the disc tray 3 was a right angle (90 degrees). In the disk device employing this stopper mechanism A, when the disk tray 3 is pulled out in the backward direction Y by the rotation of the motor as a drive source, the receiving piece 5 is engaged with the end face 61 of the engagement claw 6 from the vertical direction. As a result, the backward movement of the disk tray 3 is stopped, the backward position of the disk tray 3 is regulated, and then the rotation of the motor is stopped through a predetermined control process.

As another conventional example, there is one in which a notch formed on a side surface of a tray is engaged with a stopper on the drive device main body (corresponding to the enclosure) (see, for example, Patent Document 1). Further, when the disk tray is retracted by using a braking action by a spring when the disk tray is retracted (see, for example, Patent Document 2 and Patent Document 3) or when a disk mounting plate (corresponding to the disk tray) is retracted, A mechanism that changes the meshing state of the rack on the disk mounting plate and the gear mechanism on the driving side that meshes with the rack to decelerate the disk mounting plate to reduce a shock at the time of stopping (for example, see Patent Document 4) Etc. were known. Furthermore, it has been known that the tray is braked using the viscous resistance of the oil (see, for example, Patent Document 5).
JP 2004-95037 A JP-A-9-282762 JP-A-8-7431 JP-A-8-63853 Japanese Utility Model Publication No. 63-114449

  By the way, in the case where the above-described electrical control method is adopted as the backward position restricting means, the disk tray can be stopped at the backward position without causing a collision between members, so that a collision sound between the members becomes a problem. There are few things. Moreover, even if the disc tray-side engaging claw provided as a safety measure collides with the enclosure-side receiving piece, the collision occurs when the disc tray is decelerated. Is extremely low and its impact noise and impact are rarely a problem.

  However, when the stopper mechanism A described in FIG. 5 is used, the disk tray 3 does not decelerate in advance, and the engaging claw 6 and the receiving piece 5 collide in the vertical direction, and the disk tray 3 stops at the retracted position. As a result, it has been found that the collision sound is increased and the impact at the time of the collision is increased, and the impact sound and impact may adversely affect the performance and usability of the disk device itself.

  In this regard, the above-mentioned Patent Document 1 merely provides a technique for stopping the tray by simply engaging a notch formed on the side surface of the tray with a stopper on the drive device main body side. However, it does not provide a technique for mitigating the impact noise and impact when engaging the stopper. Moreover, since the thing of patent document 2, patent document 3, and patent document 5 uses extra springs, such as a leaf | plate spring, and an oil liquid, there is a disadvantage that the number of parts increases and the structure becomes complicated. Furthermore, since the thing of patent document 4 makes it change the meshing state of a rack and a gear mechanism by making it the special shape of the rack with which a disk mounting plate is equipped, the disk mounting which has a rack integrally. The shape of the mounting plate becomes complicated and the cost increases accordingly.

  In view of the above situation, the present invention has an object to provide a disk device capable of remarkably mitigating impact noise and impact by slightly modifying the structure of the mechanically operated stopper mechanism A described in FIG. And

  The disc device according to the present invention is a disc tray that is slidably attached to an enclosure carrying elements necessary for recording / reproducing processing on the disc recording surface, and carries the disc in and out of the enclosure. And a stopper mechanism for restricting the retracted position of the disk tray pulled out of the enclosure. The stopper mechanism is provided with a contact surface provided on one side of the enclosure and the disk tray, and is provided on the other side and has an elasticity to restrict the retracted position of the disk by engaging with the contact surface. The contact surface includes an inclined surface portion that slides after the receiving piece is engaged and elastically deforms the receiving piece.

  With this configuration, when the disc tray is pulled out of the enclosure, the receiving piece engages with the inclined surface portion of the contact surface, and the receiving piece slides on the inclined surface portion while being elastically deformed. The impact at the time of engagement between the contact surface and the receiving piece (collision) is absorbed and reduced by the elastic deformation of the receiving piece, and the receiving piece is engaged with the inclined surface portion of the contact surface from an oblique direction. As compared with the case where the receiving piece 5 is engaged with the end face 61 from the vertical direction as described with reference to FIG.

  In the present invention, it is desirable that the contact surface includes the inclined surface portion and a locking surface portion for locking the receiving piece slid by the inclined surface portion. According to this, when the disc tray is pulled out of the enclosure, the receiving piece engages with the inclined surface portion of the contact surface, and the receiving piece slides on the inclined surface portion while being elastically deformed. Locked to the locking surface. The retracted position of the disc tray is accurately regulated to the position when the receiving piece is locked to the locking surface portion. Therefore, in addition to alleviating the collision noise and impact, the position accuracy when stopping the disc tray at the retracted position is improved.

  In the present invention, the contact surface is provided in the disc tray, the locking surface portion of the contact surface is formed by a part of the side surface of the disc tray, and the inclined surface portion of the contact surface is formed from the side surface of the disc tray. It is desirable to protrude outward, and according to this, the impact noise and impact mitigating action can be exerted only by making a slight modification to incline the end face 61 described in FIG. .

  In the present invention, it is desirable that the receiving piece is a resin spring body integrally formed with resin together with the surrounding structure. According to this, since it is not necessary to provide the receiving piece as a separate part, the effect of mitigating the impact noise and impact can be exerted only by making a slight modification to incline the end face 61 described in FIG. Become.

  The disc device according to the present invention is a disc tray that is slidably attached to an enclosure carrying elements necessary for recording / reproducing processing on the disc recording surface, and carries the disc in and out of the enclosure. And a stopper mechanism for restricting the retracted position of the disk tray pulled out of the enclosure, the stopper mechanism is provided on the contact surface and the enclosure provided on the disk tray. Provided with an elastic receiving piece that regulates the retracted position of the disk by engaging with the contact surface, and the receiving piece is slid on the contact surface after engaging the receiving piece. An inclined surface portion for elastic deformation and a locking surface portion for locking the receiving piece slid by the inclined surface portion are included, and the locking surface portion is a disc The inclined surface portion protrudes outward of the engaging surface portion at an opening angle of 45 degrees with respect to the engaging surface portion, and the receiving piece is formed by the surrounding body. In addition, it is further embodied by adopting a configuration in which it is made of a resin spring body integrally molded with resin.

  In the present invention, the opening angle between the locking surface portion and the inclined surface portion of the contact surface is defined as 45 degrees. And when this opening angle is 45 degree | times, it has confirmed that the above-mentioned impact sound and the effect of mitigating the impact are satisfactorily exhibited in a well-balanced manner. Compared to the one that uses an electrical control method as a regulating means, it has become possible to reduce the impact noise and impact to the same level that is comparable.

  As described above, according to the present invention, in the structure of the mechanically operated stopper mechanism described with reference to FIG. 5, the collision sound generated when the disc tray stops only by making a slight modification to the shape of the engaging claw. And the shock can be remarkably reduced, and at the same time, the disc tray can be accurately stopped at the retracted position, so that the impact sound and impact may adversely affect the performance and usability of the disc device itself. Disappear. In addition, there is no need to change the disk tray rack to a special shape or use a spring such as a leaf spring, which is advantageous in terms of cost, and the disk tray stops at the retracted position accurately. In addition, it is possible to provide a disk device with reduced impact noise and impact at low cost.

  FIG. 1 is a schematic plan view of a disk device according to an embodiment of the present invention, partially broken away, FIG. 2 is a perspective view of the main part of the enclosure 1, FIG. 3 is a plan view of the main part of the disk tray 3, 4 (A) and 4 (B) are explanatory diagrams of operation.

  As shown in FIG. 1, in this disk apparatus, a disk tray 3 indicated by an imaginary line is attached to a resin enclosure 1 as a chassis so as to be retractable. Enclosure 1 serves as an element required for recording / reproducing processing on the disk recording surface, for example, an optical pickup, its control board, a turntable, a motor as its drive source, and a drive source for moving disk tray 3 out and out. A motor or the like (both not shown) is mounted. Then, the rotation of the tray gear 12 attached to the enclosure 1 is transmitted to the straight rack 32 on the back surface of the disc tray 3 and converted into a linear motion, whereby the disc tray 3 is withdrawn from and retracted from the enclosure 1. . Further, by placing a disk (not shown) on the disk tray 3 drawn out of the enclosure 1 and drawing the disk tray 3 into the enclosure 1, the disk is determined for recording / reproduction. In contrast to being loaded into the set position, the disk is unloaded from the set position by pulling the disk tray 3 out of the enclosure 1.

  This disk device is provided with a stopper mechanism A that operates mechanically. This stopper mechanism A exerts an action of regulating the retracted position of the disc tray 3 drawn out of the enclosure 1 and is provided on the enclosure 1 side as shown in FIG. It comprises a piece 5 and an engaging claw 6 provided on the disc tray 3 side.

  As shown in FIG. 2, the receiving piece 5 is integrally formed of resin together with the surrounding body 1, and is a resin spring body raised upward from the surrounding body 1 so as to protrude obliquely inward, and on the outer surface side thereof. Is provided with a longitudinal rib 51 for adjusting the strength of spring elasticity. Arrows a and b indicate the displacement direction against the spring property of the receiving piece 5. On the other hand, as shown in FIG. 3, the engaging claw 6 is added to the side surface of the disc tray 3, and its end surface is formed as an inclined surface portion 62. The inclined surface portion 62 and the inclined surface portion 62 are constant. The contact surface 7 is formed by the engaging surface portion 31a which is a part of the side surface of the disc tray 3 which is opposed to each other while maintaining the opening angle θ.

  In the above configuration, when the disc tray 3 is pulled out from the enclosure 1 as indicated by the arrow Y in FIG. 4A, the engaging claw 6 is inclined at a position immediately before the disc tray 3 reaches the retracted position. After the front end portion 52 of the receiving piece 5 is engaged with the surface portion 62, the front end portion 52 slides on the inclined surface portion 62 and is locked as shown in FIG. Locked to the surface portion 31a. The front end portion 52 of the receiving piece 5 is locked to the locking surface portion 31a formed by the side surface 31 of the disc tray 3, whereby the disc tray 3 is accurately stopped at the retracted position.

  Here, after the front end portion 52 of the receiving piece 5 is engaged with the inclined surface portion 62 of the engaging claw 6 at the position immediately before the disc tray 3 reaches the retracted position, as shown in FIG. In the process until the tip 52 is locked to the locking surface 31a as shown in FIG. 5), the receiving piece 5 made of a resin spring body is elastically deformed, whereby the inclined surface 62 and the receiving piece 5 are engaged. The impact generated during the engagement is absorbed and the impact during engagement is alleviated. Moreover, since the front-end | tip part 52 of the receiving piece 5 engages with the inclined surface part 62 from the diagonal direction, the collision sound accompanying engagement becomes difficult to generate | occur | produce. Further, when the front end 52 of the receiving piece 5 is locked to the locking surface portion 31a, the disc tray 3 is braked by the braking action accompanying the elastic deformation of the receiving piece 5 in advance, so that the collision sound at the time of locking is received. And the impact is extremely small. Therefore, there will be no large collision noise or impact that would be problematic in terms of performance or usability.

  When the configuration of the stopper mechanism A according to the embodiment described above is compared with the configuration of the stopper mechanism A described with reference to FIG. 5, in FIG. 5, the portion that engages the receiving piece 5 and stops the disc tray 3 at the retracted position. However, in the embodiment, it is formed by the side surface 31 of the disc tray 3 that locks the receiving piece 5 and stops the disc tray 3 in the retracted position. The point which is the latching surface part 31 which differs is. In FIG. 5, the end surface 61 of the engaging claw 6 protrudes perpendicularly from the side surface 31 of the disc tray 3, whereas in the embodiment, the end surface of the engaging claw 6 is the side surface of the disc tray 3. The difference is that an inclined surface portion 62 protruding from 31 while maintaining a constant opening angle θ is formed. Among these, the side surface 31 of the disc tray 3 forming the locking surface portion 31 is also provided in the one shown in FIG. 5, so that the contact surface 7 of the embodiment has the end surface 61 of the engaging claw 6 shown in FIG. It can be formed only by inclining and forming the inclined surface portion 62. Therefore, the configuration of this embodiment corresponds to a configuration in which the end surface 61 of the engaging claw 6 in FIG.

  By the way, when the contact surface 7 is formed by the locking surface portion 31a formed by the side surface 31 of the disc tray 3 and the inclined surface portion 62 formed by the end surface of the engaging claw 6 as in this embodiment, When the opening angle θ is set to 45 degrees, it has been confirmed that the above-described impact sound and impact mitigation action is well balanced and well-balanced. In that case, the impact sound and impact are explained at the beginning. Compared with the case where the electrical control method is adopted as the backward position restricting means, the same level can be relaxed.

  In this embodiment, the contact surface 7 of the stopper mechanism A is provided on the disc tray 3 side, and the receiving piece, which is the counterpart, is provided on the enclosure 1 side. It may be provided on the side, and the receiving piece, which is the counterpart, may be provided on the disc tray 3 side.

  In order to facilitate understanding of the description, the same or corresponding parts in FIGS. 1 to 5 are denoted by the same reference numerals.

1 is a schematic plan view showing a disk device according to an embodiment of the present invention, partially broken away. It is a perspective view of the principal part of an enclosure. It is a top view of the principal part of a disc tray. (A) (B) is an operation explanatory view. It is explanatory drawing which showed the general structure of the stopper mechanism which operate | moves mechanically.

Explanation of symbols

A Stopper mechanism 1 Enclosure 3 Disc tray 5 Receiving piece 7 Contact surface 31 Side surface of the disc tray 31a Locking surface portion 62 Inclined surface portion θ Opening angle of the inclined surface portion with respect to the engaging surface portion

Claims (5)

A disk tray is slidably attached to an enclosure on which elements necessary for recording / reproducing processing on the disk recording surface are mounted, and a disk tray for carrying a disc in and out of the enclosure is provided. In the disk device provided with a stopper mechanism for regulating the retracted position of the disk tray pulled out to the outside of the disk,
The stopper mechanism includes a contact surface provided on the disc tray and an elastic receiving piece that is provided on the enclosure and engages the contact surface to restrict the retracted position of the disc.
The contact surface includes an inclined surface portion for sliding the receiving piece after engagement to elastically deform the receiving piece, and a locking surface portion for locking the receiving piece slid by the inclined surface portion. In addition, the locking surface portion is formed by a part of the side surface of the disc tray, whereas the inclined surface portion is outward of the locking surface portion at an opening angle of 45 degrees with respect to the locking surface portion. Protruding,
The disk device according to claim 1, wherein the receiving piece is a resin spring body integrally formed with resin together with the surrounding structure. A disk tray is slidably attached to an enclosure on which elements necessary for recording / reproducing processing on the disk recording surface are mounted, and a disk tray for carrying a disc in and out of the enclosure is provided. In the disk device provided with a stopper mechanism for regulating the retracted position of the disk tray pulled out to the outside of the disk,
The stopper mechanism is provided with a contact surface provided on one side of the enclosure and the disc tray, and a receiving piece provided on the other side and having elasticity to restrict the retracted position of the disc by engaging with the contact surface; The disk device is characterized in that the contact surface includes an inclined surface portion that slides the receiving piece after engagement to elastically deform the receiving piece. 3. The disk device according to claim 2, wherein the contact surface includes the inclined surface portion and a locking surface portion for locking the receiving piece slid by the inclined surface portion. The contact surface is provided on the disc tray, the locking surface portion of the contact surface is formed by a part of the side surface of the disc tray, and the inclined surface portion of the contact surface is extended from the side surface of the disc tray to the outside thereof. The disk device according to claim 3, which protrudes. 5. The disk device according to claim 4, wherein the receiving piece is a resin spring body integrally molded with resin together with the surrounding structure.

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