JP2008210437A - Disk device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce collision noise caused when the withdrawal operation of a disk tray is stopped. <P>SOLUTION: This device includes: a disk tray 20 for loading/unloading a disk by receiving a driving force to be inserted/pulled out from a chassis 10; a guide means 30 for the disk tray 2; and a stopper means 40 for stopping the retreating operation of the disk tray 20. The engaging face 42 of the stopper means 40 is formed by the end face of a projecting part 41, and a receiving face of the stopper means 40 is formed by the end face of a projecting part 43 disposed in the chassis 10. A U-shaped resin spring piece 50 is added to the projecting part 43. By using the outer face of the free end of the resin spring piece 50 as a working face 51, the receiving face 44 is replaced with a working face 51. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention employs a means for causing an engaging surface forming a stopper means to collide with its receiving surface as a method for stopping the retreating operation of a disk device, particularly a disk tray for feeding and discharging a disk. The present invention relates to a disk device.

  In a disk device for optically processing the recording surface of a disk with an optical pickup to write or read data, a driving force by a motor is applied when the disk is carried into or out of the processing position. What uses a disc tray that receives and retreats upon receipt is well known. Also, as a stopper means for stopping the disk tray entry and exit operations, a combination of an engagement surface provided on the disk tray side and a receiving surface for receiving the engagement surface is conventionally used. It is well known.

  FIG. 3 is a plan view showing a schematic configuration of a conventional disk device, and FIG. 4 is an enlarged plan view of the IV part of FIG. FIG. 5 is a perspective view showing the shape of the protrusion 43 described later.

  As shown in FIG. 3, the disk device includes a chassis 10, a disk tray 20 that feeds and discharges a disk (not shown) by receiving and driving the chassis 10, and guiding the disk tray 20. Then, a guide means 30 for forming an entry / exit path of the disk tray 20 with respect to the chassis 10 and a stopper means 40 for stopping the withdrawal operation of the disk tray 20 are provided.

  The chassis 10 plays a role as a structure of the disk device, and is assembled with an optical pickup and a turntable (not shown), a motor as a drive source for the disk tray 20 entry and exit operations, and the like. Then, the forward or reverse rotation of the drive gear 12 fixed to the rotation shaft of the motor assembled to the chassis 10 is integrally formed with resin on the back side of the disk tray 20 and meshed with the drive gear 12. The straight movement of the disc tray 20 is converted into a linear movement in the entry direction X or the withdrawal direction Y through the straight rack 13.

  The disk tray 20 inserted and removed from the chassis 10 has disk mounting spaces S1 and S2 formed in a recessed shape on which two types of disks of different sizes are mounted, and also enters the chassis 10. When the disc is loaded, an opening W is provided for allowing the optical pickup to face the disc.

  FIG. 6 shows the guide means 30 in a schematic vertical sectional view. The guide means 30 includes a required number of protrusions 31 provided on the chassis 10 side, and a straight guide groove 32 formed on the back side of the disk tray 20 and slidably engaged with the protrusions 31. In addition, the auxiliary projection 33 on the chassis 10 side for assisting the guiding action by the cooperation of the guide groove 32 and the projection 31 during the entry operation and the withdrawal operation of the disc tray 20 and the top surface of the auxiliary projection 32 are slid. And a straight sliding surface 34 that moves. The guide means 30 forms an entry / exit route for the disc tray 20.

  The stopper means 40 shown enlarged in FIG. 4 has a function of stopping the withdrawal operation of the disc tray 20. Specifically, the receiving surface formed by the engaging surface 42 formed by the end surface of the convex portion 41 integrally formed with the resin on the disk tray 20 and the end surface of the protruding portion 43 integrally formed by the resin on the chassis 10 side. The projecting portion 43 projects from the chassis 10 in a cantilevered manner. When the disc tray 20 is retracted as shown by the arrow Y, the retracting operation of the disc tray 20 is stopped at a fixed position by engaging the engaging surface 42 with the receiving surface 44 as shown in FIG. Can be done.

  In the disk device described with reference to FIGS. 3 to 6, when the disk tray 20 performs the withdrawal operation as indicated by the arrow Y, the engagement surface 42 provided on the convex portion 41 on the disk tray 20 side is the chassis. 10 collides with and engages with the receiving surface 44 provided on the protruding portion 43 protruding like a cantilever. For this reason, the collision sound generated when the receiving surface 44 collides with the engaging surface 42 may be annoying to the user and cause discomfort.

In view of this, there has been proposed a disk device including stopper means for which measures are taken to make it difficult for the above-described collision sound to be generated (see, for example, Patent Document 1). The configuration of the stopper means 40 employed in this disk device is shown in FIG. The stopper means 40 shown in the figure is formed with two V-shaped inclined surfaces 22 and 23 formed on the protruding piece 21 provided on the disk tray 20, while providing elasticity to the stopper plate 14 provided on the chassis (not shown). When the disc tray 20 is retracted as indicated by the arrow Y, the tip of the stopper plate 14 is fitted between the two V-shaped inclined surfaces 22 and 23 and is elastically displaced while protruding. The disc tray 20 is stopped by striking against the protruding piece 21 after rubbing against the inclined surface 22 on one side of the disc 21. And this patent document 1 also describes that the load applied to the gear for driving the disk tray 20 is reduced by configuring the stopper means as described above.
Japanese Patent Laying-Open No. 2005-346805 (FIG. 2)

  As is apparent from the above, the collision noise reduction measure proposed by Patent Document 1 is formed by forming two inclined surfaces 22 and 23 in a V shape on the projection piece 21 on the disk tray side, whereas the chassis 10 The stopper plate 14 is formed on the side, and when the disc tray 20 performs the withdrawal operation, the tip of the stopper plate 14 is fitted between the two V-shaped inclined surfaces 22 and 23, and the protruding piece 21 After being rubbed against the inclined surface 22 on one side, the projection 21 is abutted.

  By the way, the stopper means employed in the disk device is desired to be made as small and compact as possible because the entire device becomes large when the outer shape of the stopper device itself is large. Therefore, also in the stopper means 40 of FIG. 7 proposed by Patent Document 1, it is desirable that the protruding piece 21 and the stopper plate 14 are as small and compact as possible.

  However, as described with reference to FIG. 6, the guide means 30 forming the entry / exit path of the disc tray 20 has an inevitable gap between the projection 31 and the guide groove 32, Since the gap acts as play, the disk tray 20 often has a side contact when the disc tray 20 moves out. Therefore, if the stopper means 40 of the above-mentioned patent document 1 is configured as small and compact as possible as described above, the receiving port 21a formed on the two V-shaped inclined surfaces 22 and 23 of the protruding piece 21. Therefore, when the disc tray 20 is retracted, the tip of the stopper plate 14 is not easily fitted into the receiving port 21a due to the side touch of the disc tray 20, and the tip of the stopper plate 14 is not received by the receiving port 21a. There is a possibility that a situation in which the front end of the stopper plate 14 does not rub against the inclined surface 22 on one side properly occurs even if the situation does not fit. In other words, in the disk device employing the stopper means 40 of Patent Document 1, if the stopper means 40 is reduced in size and size, the operation reliability when stopping the withdrawal operation of the disk tray 20 may be reduced. There was a problem.

  The present invention has been made in view of the above situation, and it is possible to configure the stopper means as small and compact as possible, even if the stopper means is configured as small and compact as possible. An object of the present invention is to provide a disk device that is excellent in operation reliability and that can effectively reduce the collision sound when the disk tray withdrawal operation stops.

  The disk device according to the present invention includes a chassis as a structure, a disk tray that receives and drives a driving force to supply and discharge disks, and guides the disk tray to the disk tray with respect to the chassis. Guide means for forming an entry / exit path, and stopper means comprising an engagement surface on the disc tray side and a receiving surface for receiving the engagement surface and stopping the withdrawal operation of the disc tray. Further, a U-shaped resin spring piece having one end connected to one side of the chassis and the disk tray and the other end being a free end is added, and formed by the other end of the resin spring piece. The outer surface of the free end is a contact surface, and the contact surface is replaced with either the receiving surface or the engagement surface.

  According to the present invention, when the engaging surface is received by the receiving surface through the operation of retracting the disc tray, the operation of retracting the disc tray is stopped. In this case, either the receiving surface or the engagement surface is replaced with the contact surface formed by the outer surface of the free end of the resin spring piece, so that the contact surface of the resin spring piece becomes the receiving surface or the engagement surface. Acts as Therefore, when the disc tray withdrawing operation is stopped, the impact caused by the collision between the contact surface of the resin spring piece acting as the receiving surface or the engaging surface and the engaging surface or receiving surface as the opposite surface is applied. The impact noise is also reduced by being absorbed by the bending deformation. Further, it is easy to reduce the area by changing the width of the contact surface of the resin spring piece, so that the collision noise can be further reduced.

  Moreover, the contact surface of the resin spring piece acting as the receiving surface or the engaging surface only needs to have a function of receiving the engaging surface or receiving surface as the mating surface during the withdrawal operation of the disc tray. Even when the disc tray is slightly touched during the withdrawal operation, the function of stopping the withdrawal operation of the disc tray is surely exhibited. Therefore, as described with reference to FIG. 7, the tip of the stopper plate 14 can no longer be fitted between the two inclined surfaces 22, 23 having the V shape, or the one inclined surface 22 is rubbed appropriately. There will be no situation where the operational reliability decreases due to the loss.

  Further, when the withdrawal operation of the disc tray stops, the disc tray stops while decelerating due to the bending of the resin spring piece, which also helps to improve the operation quality of the disc tray.

  In the present invention, the contact surface of the resin spring piece can be replaced with any of the above-described engagement surface and receiving surface. Therefore, in the present invention, one end of the resin spring piece is connected to the chassis side, and the contact surface formed by the outer surface of the free end of the resin spring piece is replaced with the receiving surface. It is possible to adopt a configuration.

  Further, in the present invention, the engaging surface of the stopper means is formed by the end face of the convex part integrally formed on the disk tray with resin, and the receiving surface of the stopper means is integrally formed on the chassis with resin. It is possible to adopt a configuration in which the end portion of the resin spring piece is connected to the protruding portion while being formed by the end surface of the protruding portion protruding in a cantilevered manner from the chassis. Since this configuration corresponds to an example in which one end of the resin spring piece is connected to the protrusion 43 having the shape shown in FIG. 5, the protrusion 43 of the disk device described with reference to FIG. 3 or FIG. In addition, there is an advantage that it is only necessary to integrally mold the resin spring piece.

  The disk device according to the present invention includes a chassis as a structure, a disk tray that receives and drives a driving force to supply and discharge disks, and guides the disk tray to the disk tray with respect to the chassis. A disc apparatus comprising: guide means for forming an entry / exit path; and stopper means having an engagement surface on the disc tray side and a receiving surface for receiving the engagement surface and stopping the withdrawal operation of the disc tray. The engaging surface of the stopper means is formed by the end face of the convex portion integrally formed with the resin on the disk tray, and the receiving surface of the stopper means is integrally formed with the chassis from the resin and is cantilevered from the chassis. Is formed by the end surface of the projecting portion projecting to the end, and one end is connected to the projecting portion and the other end is A U-shaped resin spring piece is added as the leading end, the outer surface of the free end formed by the other end of the resin spring piece is used as a contact surface, and the contact surface is replaced with the receiving surface. The stopper means and the resin spring piece are further embodied by adopting a configuration in which the stopper means and the resin spring piece are symmetrically arranged on both sides of the entrance / exit path of the disc tray. The operation of the present invention will be described in detail with reference to an embodiment described later.

  As described above, according to the present invention, even when the disc tray is laterally touched during the withdrawal operation, the withdrawal operation of the disc tray is surely stopped by the action of the stopper means or the resin spring piece. As a result, the operation reliability of the stopper means is improved. Further, when the disc tray withdrawal operation is stopped, the resin spring piece is bent to reduce the impact of the collision, and the collision noise is also reduced. And this effect has an advantage that it is surely produced even when the stopper means is configured as small and compact as possible.

  In addition, since the resin spring piece is connected to one side of the chassis and the disk tray, the above effect can be achieved without using a separate part, which avoids an increase in the number of assembly steps. Thus, it not only helps prevent a decrease in mass productivity, but also helps avoid an increase in cost. Furthermore, since the function of gradually reducing the operation speed of the disc tray is provided immediately before the withdrawal operation of the disc tray is stopped, it is possible to improve the operation quality of the disc tray.

  FIG. 1 is a schematic perspective view of a main part of a disk device according to an embodiment of the present invention, and FIG. In FIG. 1, reference numeral 43 denotes the above-described protrusion, and in this embodiment, a U-shaped resin spring piece 50 is added integrally to the tip of the protrusion 43. Since other matters are the same as those described with reference to FIG. 3, FIG. 4, or FIG. 6, in the following, detailed description of the overall configuration of the disk device will be omitted in order to avoid duplication of description. . In this embodiment, the stopper means 40 and a resin spring piece 50, which will be described later, are arranged symmetrically on both sides of the disk tray entry / exit path.

  One end of the resin spring piece 50 is connected to the protruding portion 43, while the other end is a free end and is positioned on the front side of the protruding portion 43 with a gap. The receiving surface 44 formed by the end surface of the protruding portion 43 is replaced with a contact surface 51 that is the outer surface of the free end formed by the other end of the resin spring piece 50. Other configurations are the same as those described with reference to FIG. 3, FIG. 4, or FIG. For this reason, the contact surface 51 formed by the outer surface of the free end of the resin spring piece 50 corresponds to the receiving surface 44 formed by the end surface of the protrusion 43 described with reference to FIG. 3, FIG. 4 or FIG. Acts as a substitute. Therefore, as shown in FIG. 2, when the disc tray 20 has moved backward as indicated by the arrow Y, the engaging surface 42 formed by the end surface of the convex portion 41 on the disc tray 20 side collides with the contact surface 51. The disc tray 20 stops.

  As described above, the resin spring piece 50 is formed of resin integrally with the protruding portion 43, and the outer surface of the free end of the resin spring piece 50 is formed as a contact surface 51 that acts as a substitute for the receiving surface 44. If the disc tray 20 is positioned at a distance from the front side, the engaging surface 42 on the side of the disc tray 20 that has been retracted collides with the contact surface 51 from the front and is received. Therefore, even if the disc tray 20 is laterally touched during the retreating operation in a situation where the stopper means 40 composed of the protruding portion 43 and the convex portion 41 is miniaturized and made compact, the contact surface 51 and the receiving surface 42 are wide. If the length is properly determined, the disc tray 20 is surely stopped by the collision between the two. Therefore, as described above with reference to FIG. 7, the tip of the stopper plate 14 is not fitted between the two inclined surfaces 22 and 23 having the V shape, or the inclined surface 22 on one side is appropriately fitted. There is no room for occurrence of a situation in which the operation reliability decreases due to the fact that they do not rub together.

  Further, when the engagement surface 42 on the disk tray 20 collides with the contact surface 51 and is received, the running action by the driving force applied to the disk tray 20 at that time and the disk tray 20 are released from the driving force. As a result of the inertial running action and the like, the resin spring piece 50 is bent and deformed as shown by a solid line in FIG. 2 against its elasticity to absorb the impact, and the impact sound is also reduced. In order to make the impact noise mitigating action more prominent, it is beneficial to narrow the free end of the resin spring piece 50 so that the overlapping area at the time of collision between the contact surface 51 and the engagement surface 42 is narrow. It is. In FIG. 2, the initial shape of the resin spring piece 50 and the convex portion 41 immediately before colliding with the contact surface 51 are shown by phantom lines.

  In this embodiment, not only is the operation reliability for stopping the disk tray 20 excellent, but also the collision sound when the disk tray 20 stops is reduced, and the operation performance and the operation quality of the disk device are improved. It will be. In addition, when the disc tray 20 stops, the withdrawal speed of the disc tray 20 gradually decreases and stops as the amount of bending deformation of the resin spring piece 50 increases, so that the operation near the end point of the withdrawal operation of the disc tray 20 is performed. The quality is also improved.

  In this embodiment, an example in which the resin spring piece 50 is integrally formed with the protruding portion 43 is shown. However, this point is that the resin spring piece 50 is integrally formed with the chassis 10 provided with the protruding portion 43 and connected. It may be installed. Further, one end of the resin spring piece may be integrally formed and continuously provided on the convex portion 41 on the disk tray 20 side, or may be integrally formed and continuously provided on the disk tray 20. The contact surface formed by the outer surface of the free end of the resin spring piece is replaced with the engagement surface 42 of the convex portion 41 and is received by the receiving surface 44.

  1 to 7, the same or corresponding parts are denoted by the same reference numerals for convenience of explanation.

It is a schematic perspective view of the principal part of the disc apparatus which concerns on embodiment of this invention. It is operation | movement explanatory drawing. It is the top view which showed schematic structure of the conventional disc apparatus. It is the top view to which the IV section of FIG. 3 was expanded. It is the perspective view which showed the shape of the protrusion part employ | adopted as the disc apparatus of FIG. It is a general | schematic vertical sectional view of a guide means. It is the perspective view which showed the structure of the stopper means employ | adopted as the disc apparatus of patent document 1. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Chassis 20 Disc tray 30 Guide means 40 Stopper means 41 Convex part 42 Engagement surface 43 Protrusion part 44 Receiving surface 50 Resin spring piece 51 Contact surface

Claims (4)

A chassis as a structure, a disk tray that feeds and discharges disks by being inserted into and removed from the chassis by receiving a driving force, and a guide means that guides the disk tray to form an entrance / exit path of the disk tray with respect to the chassis And a disk drive having an engagement surface on the disk tray side and a stopper means for receiving the engagement surface and stopping the withdrawal operation of the disk tray.
The engaging surface of the stopper means is formed by an end surface of a convex portion integrally formed with the resin on the disk tray, and the receiving surface of the stopper means is integrally formed with the chassis with resin and cantilevered from the chassis. And a U-shaped resin spring piece having one end connected to the protrusion and the other end being a free end. The outer surface of the free end formed by the other end of the piece is used as a contact surface, and the contact surface is replaced with the receiving surface, and the stopper means and the resin spring piece are on both sides of the disk tray entry / exit path. A disk device that is symmetrically arranged. A chassis as a structure, a disk tray that feeds and discharges disks by being inserted into and removed from the chassis by receiving a driving force, and a guide means that guides the disk tray to form an entrance / exit path of the disk tray with respect to the chassis And a stopper means comprising: an engaging surface on the disc tray side and a receiving surface that receives the engaging surface and stops the withdrawal operation of the disc tray,
A U-shaped resin spring piece having one end connected to one side of the chassis and the disk tray and the other end being a free end is added, and is formed by the other end of the resin spring piece. A disk device, wherein an outer surface of a free end is used as a contact surface, and the contact surface is replaced with either the receiving surface or the engagement surface.   3. The disk device according to claim 2, wherein one end of the resin spring piece is connected to the chassis side, and the contact surface formed by the outer surface of the free end of the resin spring piece is replaced with the receiving surface. .   The engaging surface of the stopper means is formed by an end surface of a convex portion integrally formed with the resin on the disk tray, and the receiving surface of the stopper means is integrally formed with the chassis with resin and cantilevered from the chassis. 4. The disk device according to claim 3, wherein the disk device is formed by an end face of a protruding portion protruding in a shape, and one end of the resin spring piece is connected to the protruding portion.

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