JP2006031878A - Shutter opening/closing mechanism and disk device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To attain a shutter opening/closing mechanism and a disk device capable of surely opening/closing a shutter of a recording medium by a simple mechanism. <P>SOLUTION: The shutter opening/closing mechanism 20 is provided with a holder 8 for reciprocatively holding a disk cartridge 100 with a shutter 105 which can be opened and closed, a shutter holding means 30 which is energized by own elastic force and engages in a holding hole 105A arranged in the shutter 105, and opens/closes the shutter 105 holding it against the reciprocative movement of the disk cartridge 100 loaded on the holder 8, and a holding force improving means 33 for improving the holding force for holding the shutter 105 when the shutter holding means 30 holds and opens/closes the shutter 105. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a shutter opening / closing mechanism and a disk device, and is suitable for application to, for example, a mini disk player.

  The disc cartridge of the mini disc is provided with a shutter. When the disc cartridge is carried, the shutter is closed to protect the built-in disc-shaped recording medium, and when the disc cartridge is mounted on the disc player, The shutter is opened to access the disc-shaped recording medium.

  The shutter of the disc cartridge is provided with a holding hole for holding the shutter, and when the disc cartridge is inserted into the holder of the disc player, the holding projection of the shutter holding member provided in the disc player serves as the shutter. The shutter is opened with respect to the disc cartridge by being fitted into the holding hole and holding the shutter.

  Further, when the disc cartridge is ejected from the disc player, the tip of the shutter holding member is fitted into the holding hole of the shutter to hold the shutter, thereby closing the shutter with respect to the disc cartridge.

Such a shutter holding member generally uses a plate spring formed by pressing a sheet metal, and a convex holding protrusion press-formed at the tip thereof is urged by the elastic force of the shutter holding member itself. The shutter is held by being pressed into the holding hole (see, for example, Patent Document 1, paragraph numbers [0002] to [0008], FIGS. 3 to 6).
JP 2002-157802 A

  When the disc cartridge is inserted into the holder, the shutter holding member described above bends outward along the outer shape portion of the cartridge case, and the holding projection of the shutter holding member causes the outer shape portion of the cartridge case to move according to the movement of the disc cartridge. After sliding, it fits into the shutter holding hole.

  Here, in order to open and close the shutter against the sliding resistance of the shutter with respect to the cartridge case, it is necessary to positively bias the holding protrusion of the shutter holding member against the shutter. Larger is desirable.

  However, if this urging force is excessive, the holding projection is excessively pressed against the outer shape of the cartridge case and the shutter itself when the disk cartridge is attached / detached, thereby deteriorating the attachment / detachment feeling of the disk cartridge. At the same time, there is a problem that the outer shape portion and the shutter are scraped off by the holding projection.

  The present invention has been made in view of the above points, and an object of the present invention is to propose a shutter opening / closing mechanism and a disk device capable of reliably opening and closing a shutter of a recording medium with a simple configuration.

  In order to solve such a problem, in the present invention, a holder for holding a disc cartridge provided with an openable / closable shutter is reciprocally movable, and a holding hole provided in the shutter is urged by its own elastic force to fit. The shutter holding means that opens and closes the shutter by holding the shutter against the reciprocation of the disk cartridge mounted in the holder and holding the shutter when the shutter holding means holds and opens the shutter The shutter opening / closing mechanism is provided with holding force improving means for improving the holding force.

  The holding force improving means improves the holding force by regulating the deformation of the shutter holding means and increasing the urging force when the shutter holding means opens and closes the shutter.

  When opening and closing the shutter, the holding force improving means regulates the deformation of the shutter holding means to improve the holding force, so that when the disc cartridge is attached to or detached from the holder, the urging force of the shutter holding means is weakened to hold the shutter. The means prevents the disk cartridge from being damaged, and when the shutter is opened and closed, the urging force of the shutter holding means is increased to improve the holding force, and the shutter can be opened and closed reliably.

  According to the present invention, when the shutter holding means holds and opens and closes the shutter, the holding force improving means regulates the deformation of the shutter holding means so as to improve the holding force. When attaching and detaching, the urging force of the shutter holding means is weakened to prevent the shutter holding means from scratching the disk cartridge, and when opening and closing the shutter, the holding force of the shutter holding means is improved to ensure the shutter It is possible to realize a shutter opening / closing mechanism and a disk device having a simple configuration capable of opening and closing the disk.

  Hereinafter, an embodiment of the invention will be described in detail with reference to the drawings.

(1) External configuration of portable mini-disc player In FIGS. 1 and 2, reference numeral 1 denotes a mini-disc player 1 as a disc apparatus that is equipped with the shutter opening / closing mechanism of the present invention as a whole, and rotates a disc-shaped recording medium having a diameter of 64 mm. The disc cartridge 100 (FIG. 2) of a mini-disc that can be stored is targeted for mounting, and music data is reproduced from the disc 104 of the disc cartridge 100.

  The mini disc player 1 includes a main body case 2 and a cover body 3 that is rotatably supported with the rear end portion of the main body case 2 as a fulcrum. When the disc cartridge 100 is inserted or ejected, the cover body 3 is formed. Is opened from the main body case 2 to a predetermined angle, and the main body case 2 is closed by the cover body 3 when the disk cartridge 100 is reproduced.

  The main body case 2 is provided with an open slider 4 for turning the cover body 3 from the closed position to the open position, a headphone jack 5 and a connector 6 for connecting various devices on its peripheral side surface. Although not shown, the main body case 2 is also provided with various operation buttons such as a reproduction operation and volume control. On the other hand, the cover body 3 is provided with a display unit 7 formed of a liquid crystal display for displaying the reproduction time, the remaining battery level, and the like on the surface.

  In the mini disc player 1, the direction in which the disc cartridge 100 is inserted is defined as the rear direction, the direction in which the disc cartridge 100 is ejected is defined as the front direction, and the right side in the state where the user faces the disc cartridge 100 insertion side. Will be described below with the right direction and the left side defined as the left direction.

  In this mini-disc player 1 (FIG. 2), a mechanical chassis 10 is disposed inside a main body case 2, and a holder 8 is rotatably supported with a rear end portion of the mechanical chassis 10 as a fulcrum. The holder 8 is for holding the disc cartridge 100, and opens and closes in conjunction with the rotation of the cover body 3 with respect to the main body case 2, and the disc of the disc cartridge 100 is closed with the cover body 3 closed. Transition between a mounting position where the recording medium 104 is mounted on the disk table (not shown) of the mechanical chassis 10 and an insertion / removal position where the disk cartridge 100 is inserted into and removed from the holder 8 with the cover 3 opened. It is made to do.

  Further, the main body case 2 is provided with a lock claw 9 interlocked with a slide mechanism for the open slider 4 at a substantially central position along the front surface thereof, and is locked to a lock member 11 provided inside the front surface of the cover body 3. By engaging the claw 9, the cover body 3 and the main body case 2 are locked in the closed state (FIG. 1), and the disk cartridge 100 is positioned at the mounting position.

  When the mini-disc player 1 slides the open slider 4 in the closed state, the engagement between the lock claw 9 and the lock member 11 is released, so that the cover body 3 is moved to the mechanical chassis by the action of a spring member (not shown). 10 is rotated to the open state and returned to the insertion / removal position for ejecting the disk cartridge 100.

  Here, the disc cartridge 100 is configured such that a disc-shaped recording medium 104 is rotatably accommodated in a cartridge case 103 having a rectangular flat box shape, and openings provided on the upper and lower surfaces of the cartridge case 103. A shutter 105 that opens and closes (not shown) is slidably provided.

  Further, the disk cartridge 100 is formed with a groove 106 extending in the attaching / detaching direction of the disc cartridge 100 on the side surface of the cartridge case 103 where the shutter 105 is attached. 101 and 102 are provided.

  Furthermore, a holding hole 105A is provided in the side surface portion of the shutter 105, and when the disc cartridge 100 is mounted in the holder 8 of the mini disc player 1, the tip of the shutter holding member 30 provided in the holder 8 is held. The protrusion 31 engages and holds the holding hole 105 </ b> A to open the shutter 105 with respect to the cartridge case 103.

  Further, also when the disc cartridge 100 is detached from the holder 8 of the mini disc player 1, the holding projection 31 holds the holding hole 105 </ b> A, thereby closing the shutter 105 with respect to the cartridge case 103.

  Note that the spring force value of the shutter holding member 30 is set lower than in the prior art (that is, the spring is soft), so that the holding projection 31 does not damage the cartridge case 103 or the shutter 105. It is made like that.

(2) Shutter Open / Close Mechanism of Mini Disc Player Next, the shutter open / close mechanism of the mini disc player 1 will be described in detail. As shown in FIG. 3, the shutter opening / closing mechanism 20 of the mini disc player 1 includes a holder 8 and an eject lever 40.

  The holder 8 is formed by bending a metal plate-like member into a predetermined shape, and includes a top plate portion 22 and side portions 23 extending downward from both left and right edges of the top plate portion 22 (only one is shown. ) And a receiving plate portion 24 (only one is shown) protruding from the lower edge of the side surface portion 23 toward the inside of the holder, and an opening at the front end is formed as the insertion port 8A.

  A substantially band-plate-shaped shutter holding member 30 formed so as to cut out the side surface portion 23 is provided on the side surface portion 23 on the right side of the holder 8. At the tip of the shutter holding member 30 is provided a holding projection 31 that is press-molded in a convex shape toward the inside of the holder 8, and the holding projection 31 is biased by the elastic force of the shutter holding member 30 itself. The shutter 105 is held by fitting into the holding hole 105A. Further, a stopper 26 for holding the eject lever 40 at the retracted end is provided behind the side surface portion 23.

  Further, a substantially S-shaped regulating member 32 is provided from an intermediate portion between the base portion 30 </ b> A and the holding projection 31 in the shutter holding member 30 toward the top plate portion 22. A groove abutting portion 33 made of a plate-like member perpendicular to the top plate portion 22 and parallel to the disc mounting / removing direction is provided. As will be described in detail later, the groove contact portion 33 improves the spring force value of the shutter holding member 30 by restricting the displacement of the shutter holding member 30 according to the position of the eject lever 40, and thereby the disc cartridge. 100 shutters 105 can be securely held.

  An escape hole 43 is provided at the rear end of the guide hole 41. The escape hole 43 is formed by enlarging the guide hole 41 in the right direction.

  Further, an arm portion 46 extends toward the inner side of the holder 8 at the rear end of the eject lever 40, and a disk contact portion 47 is provided at the end portion of the arm portion 46, and is attached to the holder 8. The end of the cartridge case 103 of the disc cartridge 100 is in contact with the disc contact portion 47.

  Further, a notch-like spring hooking portion 44 is provided on the right side of the eject lever 40, and a tension spring 45 is provided between the spring hooking portion 44 and the spring hooking portion 25 provided on the right front side of the holder 8. By being stretched, the eject lever 40 is always urged in the disc ejection direction. As a result, in a state where the disc cartridge 100 is not inserted into the holder 8, the eject lever 40 is advanced to the full end of the moving range by the guide holes 41 and 42 as shown in FIGS.

  When the disc cartridge 100 is inserted into the holder 8, first, as shown in FIG. 6, the corners of the cartridge case 103 abut against the holding projections 31, thereby pushing the shutter holding member 30 outward while being bent. At this time, since the eject lever 40 is at the forward end, the groove abutting portion 33 of the shutter holding member 30 is positioned inside the escape hole 43 of the eject lever 40, and thus the groove abutting portion 33 is located in the shutter holding member 30. The shutter holding member 30 can be deformed over the entire length from the root portion 30 </ b> A to the holding protrusion 31.

  For this reason, the pressure applied by the holding projection 31 to the cartridge case 103 and the shutter 105 becomes a low value corresponding to the low spring force value of the shutter holding member 30, so that the holding projection 31 is inserted into the cartridge case 103 and the cartridge cartridge 100 when the disc cartridge 100 is inserted. It is possible to prevent the shutter 105 from being shaved.

  When the disc cartridge 100 is inserted from this state, as shown in FIG. 7, the corner portion of the cartridge case 103 comes into contact with the disc contact portion 47 and the holding projection 31 of the shutter holding member 30 moves to the shutter 105. The shutter holding member 30 is released from its deflection, and the position of the shutter 105 relative to the holder 8 is fixed by the shutter holding member 30.

  When the disc cartridge 100 is further inserted from this state, the disc abutment portion 47 is pressed against the cartridge case 103, whereby the eject lever 40 starts to move backward together with the disc cartridge 100 as shown in FIG. Since the position of the shutter 105 relative to the holder 8 is fixed by the shutter holding member 30 during the retreat period of the eject lever 40, the shutter 105 is opened so as to be left behind by the movement of the disc cartridge 100.

  Further, during the retracting period of the eject lever 40, the groove abutting portion 33 of the shutter holding member 30 is in contact with the right inner wall of the guide hole 41 of the eject lever 40, so that the shutter holding member 30 serves as a holding force improving means. Displacement is restricted by the groove contact portion 33, and deformation is allowed only in a limited range from the restriction member 32 to the holding protrusion 31. For this reason, the pressing force applied by the holding projection 31 to the shutter 105 is much larger than the forward movement state of the eject lever 40 shown in FIGS. 4 to 7, so that the shutter holding member 30 reliably holds the shutter 105. The shutter 105 can be opened against the open / close resistance.

  When the disc cartridge 100 is completely inserted into the holder 8 as shown in FIG. 9, the eject lever 40 moves to the rearward end, and the stopper 26 of the holder 8 and the arm portion 46 of the eject lever 40 are engaged. Thus, the eject lever 40 is held in the retracted position.

  In this state, the cover body 3 is pushed down to close the main body case 2, whereby the disk cartridge 100 is rotated to the mounting position together with the holder 8, and the disk cartridge 100 is mounted on the disk table of the mechanical chassis 10 (FIG. 2). Is ready for playback.

  When the open slider 4 is slid from this state, the engagement of the lock claw 9 and the lock member 11 (FIG. 2) is released and the holder 8 rotates to the attachment / detachment position. At this time, the stopper 26 of the holder 8 and the ejector The engagement with the arm portion 46 of the lever 40 is also released.

  As a result, the eject lever 40 moves forward together with the disc cartridge 100 by the urging force of the tension spring 45 (FIG. 3), and after the disc insertion completion state (FIG. 10) to the eject lever moving state (FIG. 8), the shutter shown in FIG. Move to the open / close start state. Since the position of the shutter 105 relative to the holder 8 is fixed by the shutter holding member 30 during the forward period of the eject lever 40, the shutter 105 is closed so as to be left behind by the movement of the disc cartridge 100.

  Further, during the forward period of the eject lever 40, the groove abutting portion 33 of the shutter holding member 30 is in contact with the right inner wall of the guide hole 41 of the eject lever 40, so that the shutter holding member 30 serves as a holding force improving means. Displacement is regulated by the groove abutting portion 33, so that the shutter holding member 30 can reliably hold the shutter 105 and close the shutter 105 against open / close resistance.

  When the eject lever 40 returns to the shutter opening / closing start state (FIG. 7), the user can remove the disk cartridge 100. In this shutter opening / closing start state, since the groove contact portion 33 of the shutter holding member 30 moves into the escape hole 43 of the eject lever 40, the displacement restriction of the shutter holding member 30 by the groove contact portion 33 is released. Thus, the shutter holding member 30 can be deformed over the entire length from the base portion 30 </ b> A to the holding protrusion 31.

  For this reason, the pressing force applied by the holding projection 31 to the cartridge case 103 and the shutter 105 is a low value corresponding to the low spring force value of the shutter holding member 30, so that the holding projection 31 is attached to the cartridge case 103 and the cartridge cartridge 100 when the disk cartridge 100 is detached. It is possible to prevent the shutter 105 from being shaved.

(3) Operation and Effect In the above configuration, when the shutter opening / closing mechanism 20 starts to insert the disk cartridge 100 into the holder 8, first, the cartridge case is placed on the disk contact portion 47 of the eject lever 40 at the forward end. Until the corner portion 103 abuts, the holding projection 31 of the shutter holding member 30 slides on the side surfaces of the cartridge case 103 and the shutter 105 in accordance with the movement of the disk cartridge 100 (FIG. 6).

  At this time, the eject lever 40 is at the forward end, and the groove abutting portion 33 of the shutter holding member 30 is located inside the escape hole 43 of the eject lever 40, so that the shutter holding member 30 is in the groove abutting portion 33. Therefore, the pressing force applied to the cartridge case 103 and the shutter 105 by the holding projection 31 becomes a low value corresponding to the low spring force value of the shutter holding member 30. Thus, it is possible to prevent the holding projection 31 from scraping the cartridge case 103 and the shutter 105 when the disc cartridge 100 is inserted.

  The holding protrusion 31 of the shutter holding member 30 is fitted into the holding hole 105A of the shutter 105 almost simultaneously with the contact of the corner portion of the cartridge case 103 with the disk contact portion 47 of the eject lever 40, and the shutter 105 is The position with respect to the holder 8 is fixed (FIG. 7). When the disc cartridge 100 is further inserted from this state, the eject lever 40 moves backward together with the disc cartridge 100, while the shutter 105 whose position is fixed by the shutter holding member 30 opens with respect to the cartridge case 103.

  During the retreat period of the eject lever 40, that is, the period in which the shutter 105 is opened, the groove abutting portion 33 of the shutter holding member 30 is in contact with the right inner wall of the guide hole 41 of the eject lever 40. The displacement of the member 30 is restricted by the groove abutting portion 33, and deformation is allowed only in a limited range from the restricting member 32 to the holding protrusion 31. For this reason, the pressurizing force applied to the shutter 105 by the holding projection 31 is increased, whereby the shutter holding member 30 can reliably hold the shutter 105 and reliably open the shutter 105 against the open / close resistance.

  When the engagement between the arm portion 46 of the eject lever 40 held at the retracted end and the stopper 26 of the holder 8 is released, the eject lever 40 moves forward together with the disc cartridge 100 by the urging force of the tension spring 45. The shutter 105 whose position is fixed by the shutter holding member 30 is closed with respect to the cartridge case 103.

  Even during the forward period of the eject lever 40, that is, the period in which the shutter 105 is closed, the groove abutting portion 33 of the shutter holding member 30 is in contact with the right inner wall of the guide hole 41 of the eject lever 40. The displacement of the member 30 is restricted by the groove abutting portion 33, and deformation is allowed only in a limited range from the restricting member 32 to the holding protrusion 31. For this reason, the pressurizing force applied to the shutter 105 by the holding projection 31 is increased, whereby the shutter holding member 30 can reliably hold the shutter 105 and reliably close the shutter 105 against the open / close resistance.

  Further, when the disk cartridge 100 is detached from the holder 8 at the forward end of the eject lever 40, the groove contact portion 33 of the shutter holding member 30 is located inside the escape hole 43 of the eject lever 40. The shutter holding member 30 can be deformed outward over the entire length without being restricted by the groove abutting portion 33. Therefore, the pressure applied to the cartridge case 103 and the shutter 105 by the holding projection 31 is the shutter holding member 30. Therefore, it is possible to prevent the holding projection 31 from scraping the cartridge case 103 and the shutter 105 when the disk cartridge 100 is detached.

  According to the above configuration, the shutter holding member 30 for holding and opening and closing the shutter 105 is configured to be softer than before, so that when the disk cartridge 100 is attached to and detached from the holder 8, the holding projection 31 is moved to the cartridge. The case 103 and the shutter 105 can be prevented from being damaged.

  Further, a groove abutting portion 33 for restricting the displacement of the shutter holding member 30 is provided in the vicinity of the intermediate portion of the shutter holding member 30, and the groove abutting portion 33 is provided in the guide hole of the eject lever 40 when the shutter 105 is opened and closed. It is possible to regulate the deformation of the shutter holding member 30 by abutting against the inner wall of 41, securely hold the shutter 105 when the shutter is opened and closed, and reliably open and close the shutter 105 against the opening and closing resistance.

(4) Other Embodiments In the above-described embodiments, the case where the shutter holding member 30 is formed integrally with the holder 8 has been described. However, the present invention is not limited to this, and is provided separately. The shutter holding member 30 may be formed connected to the holder 8.

  In the above-described embodiment, the groove abutting portion 33 of the shutter holding member 30 abuts against the inner wall of the guide hole 41 of the eject lever 40 to restrict the displacement of the shutter holding member 30. The invention is not limited to this. In short, as long as the displacement of the shutter holding member 30 can be regulated when the shutter is opened and closed, the shutter opening and closing mechanism 20 may be configured in various other configurations.

  Furthermore, in the above-described embodiment, the case where the present invention is applied to the shutter opening / closing mechanism 20 of the disk cartridge 100 in the mini disk player 1 has been described. However, the present invention is not limited to this, and the present invention is not limited to this. The present invention can be widely applied to a shutter opening / closing mechanism that opens and closes shutters of various other disk cartridges in which disk-shaped recording media such as Versatile Disc-Read Only Memory) are stored.

  The shutter opening / closing mechanism and the disk device of the present invention can be applied to applications for reliably opening and closing a shutter provided in a cartridge for storing a disk-shaped recording medium.

1 is a schematic perspective view showing an external configuration of a minidisc player having a shutter opening / closing mechanism of the present invention. It is a rough-line perspective view which shows a mode that a disc cartridge is mounted in a mini disc player. It is a rough-line perspective view with which it uses for description of a shutter opening / closing mechanism. It is a rough-line perspective view which shows a disc non-insertion state. It is a basic diagram which shows a disc non-insertion state. It is a basic diagram which shows a disk insertion start state. It is a basic diagram which shows a shutter opening / closing start state. It is a basic diagram which shows an eject lever movement state. It is a rough-line perspective view which shows an eject lever movement state. It is a basic diagram which shows a disk insertion completion state.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Mini-disc player, 2 ... Main body case, 3 ... Cover body, 4 ... Open slider, 8 ... Holder, 20 ... Shutter opening / closing mechanism, 30 ... Shutter holding member, 31 ... Holding protrusion, DESCRIPTION OF SYMBOLS 100 ... Disc cartridge, 103 ... Cartridge case, 104 ... Disc-shaped recording medium, 105 ... Shutter, 105A ... Holding hole.

Claims (4)

A holder for holding a disc cartridge provided with an openable / closable shutter so as to reciprocate;
The shutter is opened and closed by holding the shutter against the reciprocating movement of the disk cartridge mounted on the holder by being fitted into the holding hole provided in the shutter by being urged by its own elastic force. Shutter holding means for causing
A shutter opening / closing mechanism comprising: holding force improving means for improving a holding force for holding the shutter when the shutter holding means holds and opens the shutter. The holding force improving means is characterized in that, when the shutter holding means holds and opens and closes the shutter, the holding force is improved by restricting deformation of the shutter holding means and increasing the urging force. The shutter opening / closing mechanism according to claim 1. A holder for detachably mounting a disc cartridge provided with an openable / closable shutter; and
The shutter is opened and closed by holding the shutter against the reciprocating movement of the disk cartridge mounted on the holder by being fitted into the holding hole provided in the shutter by being urged by its own elastic force. Shutter holding means for causing
And a holding force improving means for improving a holding force for holding the shutter when the shutter holding means opens and closes the shutter. The holding force improving means is characterized in that, when the shutter holding means holds and opens and closes the shutter, the holding force is improved by restricting deformation of the shutter holding means and increasing the urging force. The disk device according to claim 3.

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