JP2006344325A - Shutter opening/closing device, and information reproducing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shutter opening/closing device which automatically performs opening/closing of a shutter by insertion of a cartridge and obviates the generation of abnormal sounds and the occurrence of a fault, such as a mechanical lock. <P>SOLUTION: The shutter opening/closing device 2 includes a driven body 18 which engages with a recessed part 13c formed on a wheel 13 for opening and closing the shutter 15 of the cartridge 10 via an aperture 11 of the cartridge 10 and a sliding body 18a which regulates the movement of the driven body 18 in the cartridge direction. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present application relates to a technical field of a recording medium driving apparatus and an information reproducing apparatus that are provided in a cartridge or the like for storing an information recording medium such as an optical disk and that include a shutter opening / closing mechanism for opening and closing a shutter that protects the optical disk or the like. About.

  Conventionally, there is a shutter opening / closing mechanism for a cartridge containing the information recording medium. This conventional shutter opening / closing mechanism will be specifically described with reference to FIGS.

  Such a shutter opening / closing mechanism is usually a mechanism that automatically opens and closes the shutter by loading and unloading the cartridge 35 with respect to the information reproducing apparatus 30 as shown in FIG. 1 for recording and reproducing information on the information recording medium. Yes.

  At this time, a cartridge insertion port 31a through which the cartridge 35 passes when loading / discharging the cartridge 35 is formed on the front surface of the casing 31 of the information reproducing apparatus 30. Further, on one side wall in the casing 31, A shutter opener 32 for opening and closing a shutter provided in the cartridge 35 is formed by relative movement with respect to the information reproducing apparatus 30 when the cartridge 35 is loaded into and discharged from the information reproducing apparatus 30. When the cartridge 35 is loaded, for example, the cartridge 35 moves relative to the shutter opener 32 to rotate a wheel (not shown) in the cartridge 35 to open the shutter.

  At this time, as shown in FIG. 2, the shutter opener 32 includes a rack 33 and convex portions 34, 34 at both ends of the rack 33 in the moving direction of the cartridge 35. As shown in FIG. 3, the convex portion 34 is constantly urged toward the housing 36 of the cartridge 35 by a spring (not shown).

  Next, the operation of each part when the cartridge 35 is loaded in the information reproducing apparatus 30 will be described with reference to FIG. 3 is a cross-sectional plan view showing a state in which the cartridge 35 is loaded from the left to the right. The cartridge 35 to be loaded is loaded in the direction from the bottom to the top in FIG. Then, a shutter (not shown) in the cartridge 35 is opened by the relative movement with the shutter opener 32 due to the movement when the cartridge 35 is loaded.

  As shown in FIGS. 3A to 3D, when the cartridge 35 is loaded, first, one convex portion 34 of the shutter opener 32 and one of the two concave portions 38 formed on the outer periphery of the wheel 37 are engaged. Then, the wheel 37 rotates counterclockwise in FIG. 3 (FIG. 3A).

  Next, as the cartridge 35 further moves and the wheel 37 continues to rotate, the rack 33 of the shutter opener 32 and the rack 39 formed between the recesses 38 on the outer periphery of the wheel 37 are further rotated while meshing with each other. (FIGS. 3B and 3C), whereby the other convex portion 34 of the shutter opener 32 is engaged with the other concave portion 38 of the wheel 37, and the other convex portion 34 of the shutter opener 32 is the center of the cartridge 35. (FIG. 3D) completes the shutter opening operation. When the cartridge 35 is ejected (unloaded), operations opposite to those shown in FIGS. 3A to 3D are performed, and the shutter closing operation is performed.

As described above, an information reproducing apparatus including a shutter opening / closing mechanism in which the shutter of the cartridge 35 is closed when ejected and opened when loaded is disclosed in the following patent documents (Patent Documents 1 and 2).
JP 2003-109282 A JP 2003-115157 A

  However, in such conventional means, the convex portion 34 of the shutter opener 32 collides with the housing 36 of the cartridge 35 as shown in FIG. 4A or 4B when the cartridge is loaded / discharged. Therefore, there is a problem that abnormal noise is likely to occur because the convex portion 34 is flipped up.

  Further, when the cartridge 35 is largely displaced due to play or the like, the projecting portion 34 and the housing 36 of the cartridge 35 collide with each other so that the cartridge 35 cannot be moved, and the entire mechanism for loading and discharging is locked. There was also a problem that there was a possibility of doing.

  Therefore, the present application has been made as an example of solving the above problems, and the shutter is automatically opened and closed by inserting the cartridge, and there is a problem such as generation of abnormal noise or mechanical lock when the cartridge is loaded or ejected. It is an object of the present invention to provide a shutter opening / closing device that does not cause the trouble.

  In order to solve the above problem, the shutter opening and closing device according to claim 1 is formed on a wheel (13) for opening and closing the shutter (15) of the cartridge via the opening (11) of the cartridge (10). A driven body (18) engaged with the recess (13c) and a sliding body (18a) for controlling the movement of the driven body in the cartridge direction are included.

  Hereinafter, the best embodiment of the present application will be described in detail with reference to FIGS. 5 is a diagram showing a schematic configuration example of the cartridge, FIG. 6 is a cross-sectional view of an opening provided in the cartridge body, FIG. 7 is a diagram showing a schematic configuration example of the information reproducing apparatus, and FIG. 8 is an example of a driven pin and a sliding member FIG. 9 is a diagram showing an operation example of the shutter opening / closing mechanism of the cartridge, FIG. 10 is an enlarged view of B of FIG. 9, FIG. 11 is a diagram showing the relationship between the driven pin and the sliding member, and the cartridge. 9 is a sectional view of FIG. 9A, FIG. 11B is a sectional view of FIG. 9B, and FIG. 12 is a diagram showing another embodiment of the sliding member.

  The embodiment described below is an embodiment when the present application is applied to an information reproducing apparatus such as an optical disk player. In the present invention, an “information reproducing apparatus” will be described as an example. However, the present invention is not limited to this as long as it includes a shutter opening / closing apparatus of the present invention described later. That is, the present invention is not limited to an information reproducing apparatus that reproduces information, but can also be applied to an information recording apparatus that records information, and further to an information recording / reproducing apparatus having these reproducing functions and recording functions. It is.

  Further, the information reproducing apparatus specifically refers to the information recording medium while rotating the information recording medium accommodated in the cartridge 10 described later shown in FIG. 5 by a rotation driving unit such as a turntable. This is a device for reproducing information such as video and audio while moving the optical pickup in the radial direction. Note that the “information reproducing apparatus” in the present invention includes an information recording / reproducing apparatus having a recording function for recording information on an information recording medium in addition to such an information reproducing function.

  Further, as the information recording medium in this case, specifically, CD-ROM (Compact Disc-Read Only Memory), CD-DA (CD-Digital Audio), CD-R (CD-Recordable), CD-RW (CD -Re Recordable), Video-CD, CD-G (CD-Extended Graphics), DVD-ROM (Digital Versatile Disc-ROM), DVD-Video, DVD-Audio, DVD-R, DVD-RW, DVD-RAM, Includes a Blu-ray Disc.

  First, the configuration of the cartridge itself according to the present application will be described with reference to FIG.

  As shown in FIG. 5, the cartridge 10 according to the present application includes a cartridge body 10 a having an opening, which will be described later, on a side portion. As shown in FIG. 6, the cartridge body 10a is formed by overlapping an upper cartridge body 10d and a lower cartridge body 10b.

  As shown in FIG. 5, a wheel 13 is rotatably provided inside the cartridge body 10a, and a part of the wheel 13 in the circumferential direction is exposed from an opening 11 described later of the cartridge body 10a. Is formed.

  As shown in FIG. 6, the end surface on the opening 11 side of the cartridge main body 10a has convex portions 10e and 10f formed by projecting the peripheral edges of the upper cartridge 10d and the lower cartridge 10b. It is formed in a concave shape. Further, the wheel 13 is provided so as to be exposed between the projecting portions 10e and 10f of the upper cartridge 10d and the lower cartridge 10b beyond the end surface 10g of the recessed portion of the cartridge body 10a.

  In addition, this wheel 13 is illustrated as a drive body of this invention. Further, the lower cartridge body 10b is provided with a predetermined opening 10c in the radial direction so that the pickup unit of the information reproducing apparatus into which the cartridge 10 itself is loaded / discharged accesses the optical disc 12. Further, the wheel 13 is provided with a shutter 15 via a connecting member 14. Further, the wheel 13 is provided with a predetermined opening 13d in the radial direction so that the pickup unit of the information reproducing apparatus can access the optical disk 12. An optical disk 12 is loaded on the wheel 13. The shutter 15 opens and closes via the connecting member 14 in conjunction with the rotation of the wheel 13. In addition, a rack 13b that meshes with a rack 16 described later is formed on the wheel 13 in a part in the circumferential direction. Moreover, the recessed part 13c for engaging with the driven pin 18 mentioned later is formed in the both ends vicinity of the rack 13b. Furthermore, this driven pin 18 is illustrated as the “driven body” of the present invention.

  That is, in this embodiment, the rack 13b, the driven pin 18 and the recess 13c define the engagement relationship between the information reproducing apparatus and the cartridge 10, but as long as the same function can be achieved, It goes without saying that it is not limited.

  The cartridge 10 is loaded and discharged by a tray 5 from an opening 4 of the information reproducing apparatus 2 described later. As a result, the cartridge 10 moves relative to the rack 16 and the driven pin 18 that are provided in the casing of the information reproducing apparatus 2 to be described later.

  Next, the information reproducing apparatus according to the present application will be described with reference to FIGS.

  As shown in FIG. 7 which is a schematic configuration example of the information reproducing apparatus according to the present application, the information reproducing apparatus 2 includes a flat rectangular parallelepiped casing 2a. On the front surface of the housing 2a, a horizontally long opening 4 is formed through which a cartridge 10 containing an optical disk passes during loading and unloading.

  On the other hand, a tray 5 is provided inside the housing 2a so that it can be pulled out from the opening 4 or can be pulled into the housing 2a. The tray 5 is pulled out to a position where the cartridge 10 can be placed, and is pulled to a recording or reproducing position where recording or reproduction is performed by the optical pickup unit.

  Although not shown, a drive unit is connected to the tray 5, and a drive unit such as a motor is attached to the drive unit. The drive unit and the drive unit are accommodated in the housing 2a.

  Then, the tray 5 is pulled into the housing 2a or driven out of the housing 2a when the drive unit or the like is driven.

  In addition, the tray 5 has a recess for placing the cartridge 10 at substantially the center thereof, and the tray 5 has an opening for reading information from or writing information to the optical disk.

  A support 27 for supporting a member such as the driven pin 18 for opening and closing the shutter 15 of the cartridge 10 is fixedly attached to one side wall inside the housing 2a in the moving direction of the tray 5. ing. The support body 27 is integrally formed with the driven pin 18 above the driven pin 18 and the driven pin 18 provided at both ends of the rack 16 via a leaf spring 17. And a sliding member 18a.

  The driven pin 18 includes a convex portion 18 b for engaging with the concave portion 13 c of the wheel 13. The sliding member 18a slides along the convex portion 10e on the upper side wall of the cartridge body 10a by the relative movement of the driven pin 18 with respect to the cartridge 10. The sliding member 18a controls the movement of the driven pin 18 so that the driven pin 18 avoids contact with the cartridge body 10a. The sliding surface of the sliding member 18a that slides with the convex portion 10e of the cartridge body 10a is preferably formed in an arc shape. This is because the contact area with the cartridge body 10a is reduced by reducing the area in contact with the cartridge body 10a, and the sliding member 18a can be slid while moving smoothly. This is because the sliding noise can be reduced.

  On the other hand, the leaf spring 17 is attached so that each driven pin 18 is biased toward the cartridge 10 side. Thus, the protrusion 18b of the driven pin 18 can be fitted to the recess 13c of the wheel 13 while preventing the driven pin 18 from contacting the cartridge body 10a when the cartridge 10 is loaded / discharged.

  Moreover, as shown in FIG. 8, it is preferable that the distance S between the tip of the driven pin 18 and the sliding surface of the sliding member 18a is less than 1.5 mm. In this way, it is possible to effectively avoid contact of the driven pin 18 with the cartridge body 10a.

  Note that various devices for recording or reproducing the optical disk 12 stored in the cartridge 10 are stored in the housing 2a.

  5 to 7, the wheel 13 is an example of the driver of the present application, and the information reproducing apparatus is an example of an apparatus in which the cartridge of the present application is loaded. Furthermore, the driven pin 18 is an example of the driven body of the present application, and the sliding member 18a is an example of the sliding body of the present application. The leaf spring 17 is an example of the biasing means of the present application.

  Next, a shutter opening / closing mechanism for opening / closing the shutter 15 of the cartridge 10 will be described with reference to FIG. The members corresponding to those in FIGS. 5 to 8 are denoted by the same reference numerals.

  First, as shown in FIG. 9A, when the cartridge 10 is placed on the tray 5 and the tray 5 starts to be accommodated in the information reproducing apparatus 2 by a driving unit or the like (not shown), one (information reproducing apparatus) 2), the sliding member 18a moves while sliding along the side wall of the cartridge body 10a, and one driven pin 18 also moves as the sliding member 18a moves. Next, as shown in FIG. 11 (a), the convex portion 18 b of one driven pin 18 engages with the one concave portion 13 c exposed from the opening 11 of the wheel 13 and moves relative to the cartridge 10. Rotate. Further, the sliding surface of the sliding member 18a comes into contact with the convex portion 10e of the cartridge main body 10a to prevent the driven pin 18 from moving more than necessary to the cartridge side, that is, the convex portion 18b of the driven pin 18 is the cartridge. Contact with the main body 10a is prevented. Thereafter, when the tray 5 is further housed inside the information reproducing apparatus 2, as shown in FIG. 9B, one sliding member 18a slides along the side wall of the cartridge body 10a. Then, the convex portion 18b of the one driven pin 18 comes out of the concave portion 13c, and the rack 13b of the wheel 13 and the rack 16 provided on the information reproducing apparatus 2 side are engaged with each other, so that the wheel 13 further rotates. At this time, as shown in FIGS. 10 and 11B, the sliding surface of the sliding member 18a comes into contact with the convex portion 10e of the cartridge main body 10a, and the convex portion 18b of the driven pin 18 is in contact with the cartridge main body 10a. While being guided by the indented portion, the convex portion 18b of the driven pin 18 is controlled so as not to contact the cartridge main body 10a, and is prevented from moving more than necessary to the cartridge 10 side.

  Next, as shown in FIG. 9C, the other sliding member 18a moves while sliding along the side wall of the cartridge main body 10a, and the convex portion 18b of the other driven pin 18 opens the cartridge main body 10a. Guided to part 11.

  Further, when the tray 5 is housed inside the information reproducing apparatus 2, as shown in FIG. 9D, the convex portion 18b of the other driven pin 18 is exposed to the other concave portion 13c where the wheel 13 is exposed. And the wheel 13 rotates to a predetermined position and stops. As the wheel 13 rotates, the shutter 15 opens through the connecting member 14. At this time, since the convex portion 18b of the other driven pin 18 is engaged with the concave portion 13c of the wheel 13, the wheel 13 is prevented from rotating in reverse for some reason. Therefore, the opening of the shutter 15 is also stabilized in the fully open state.

  On the other hand, when the tray 5 begins to be pulled out when the cartridge 10 is ejected, the convex portion 18b of the other driven pin 18 engages with the other concave portion 13c exposed to the wheel 13 as shown in FIG. The wheel 13 is reversely rotated.

  Thereafter, when the tray 5 is further pulled out, as shown in FIG. 9C, the other sliding member 18a moves while sliding along the side wall of the cartridge body 10a, and the other driven pin 18 is moved. The convex portion 18b of the wheel 13 comes out of the concave portion 13c, and the rack 13b of the wheel 13 and the rack 16 provided in the information reproducing apparatus 2 mesh with each other to rotate the wheel 13.

  Next, when the tray 5 is further pulled out, as shown in FIG. 9B, one sliding member 18a moves while sliding along the side wall of the cartridge body 10a, and one driven pin Eighteen convex portions 18b are guided to the opening 11 of the cartridge body 10a.

  Thereafter, when the tray 5 is further pulled out, as shown in FIG. 9A, the convex portion 18b of one driven pin 18 engages with the one concave portion 13c exposed to the wheel 13, and the wheel 13 further moves. Reverse rotation to a predetermined position and stop. With the reverse rotation of the wheel 13, the shutter 15 is closed via the connecting member 14.

  Further, when the tray 5 is completely pulled out to the external pulling position, one driven pin 18 and the sliding member 18a are retracted from the opening 11 of the cartridge body 10a.

  Here, although not shown, the sliding member 18a may include a rotatable body (for example, a roller) on the outer periphery. In this way, when the sliding member 18a moves on the side wall of the cartridge body 10a by the relative movement of the cartridge 10 with respect to the housing 2a, the rotating body slides on the side wall of the cartridge body 10a while rolling, so that the friction resistance Is reduced and a smooth operation is possible, and the operation sound can be reduced.

  The driven pin 18 may include the sliding member 18a below the convex portion 18b. In this case, the sliding member 18a moves while sliding on the lower side wall of the cartridge body 10a. Needless to say, the sliding member 18a may slide on both the upper and lower side walls of the cartridge body 10a.

  Next, another embodiment of the sliding member 18a will be described.

  As shown in FIG. 12, the sliding member 18a may be slid on the side surface of the tray. Specifically, an end body 41 is provided on one side of the tray 5 along the end surface on the opening 11 side of the cartridge 10 when the cartridge 10 is placed on the tray 5. . The end body 41 is provided so that a part of the driven pin 18 slides and the convex portion 18b of the driven pin 18 does not move more than necessary to the cartridge side. In this case, the width of the end body 41 is appropriately designed so that the tip of the convex portion 18b of the driven pin 18 faces the concave portion 13c of the wheel 13 without contacting the side wall of the cartridge.

  In this way, the sliding member 18a moves while sliding on the end body 41, so that the protrusion 18b of the driven pin 18 contacts the cartridge body 10a when the cartridge 10 is loaded / discharged. The convex part 18b of the driven pin 18 can be fitted with the concave part 13c of the wheel 13 while preventing.

  As described above, the sliding member 18a is not necessarily slid to the convex portion 10e side of the cartridge 10. For example, as described above, the end body 41 is attached to the side portion of the tray 5, and the sliding member 18a The end body 41 formed along the side of the tray 5 may be moved while sliding.

  As described above, the shutter opening / closing device as the shutter opening / closing mechanism according to the present application is a driven pin that engages with the recess 13 c formed in the wheel 13 that opens and closes the shutter 15 of the cartridge 10 through the opening 11 of the cartridge 10. 18 and a sliding member 18a for controlling the movement of the driven pin 18 in the cartridge direction.

  In this way, the sliding member 18a can be brought into contact with the cartridge body 10a, and the protrusion 18b of the driven pin 18 can be prevented from moving more than necessary to the cartridge side (contact with the cartridge body 10a). 10, the protrusion 18b of the follower pin 18 is not in contact, and the generation of abnormal noise can be prevented. Further, since the convex portion 18b of the driven pin 18 is guided to the indented portion of the cartridge main body 10a by the sliding member 18a, the operation at the time of loading / discharging is stabilized without contacting the cartridge 10. Further, since the convex portion 18b of the driven pin 18 does not come into contact with the cartridge 10, the apparatus does not lock even when the position of the cartridge 10 is largely displaced due to play or the like.

  Further, the shutter opening / closing device and a reproducing means for reproducing information on the optical disk 12 accommodated in the cartridge 10 may be provided. In this way, the optical disk 12 can be reproduced by automatically opening and closing the shutter 15 of the cartridge 10.

  Note that the shutter opening / closing mechanism in the above embodiment loads the cartridge 10 to the recording / reproducing position in the casing 2a of the information reproducing apparatus 2 or ejects the cartridge 10 to the drawing position for placing the cartridge 10 on the tray 5. Although applied to the playback apparatus 2, it can also be applied to a so-called slot-in type information playback apparatus.

It is a schematic block diagram of the conventional cartridge. It is a schematic block diagram of the conventional shutter opener. It is an operation | movement figure of the shutter opening / closing mechanism of the conventional cartridge. It is an operation | movement enlarged view of the shutter opening / closing mechanism of the conventional cartridge. It is a figure which shows the schematic structural example of the cartridge which concerns on this embodiment. It is a figure which shows the example of a schematic structure of the information reproduction apparatus which concerns on this embodiment (an example of the information reproduction apparatus of this application). It is a figure which shows the example of a schematic structure of an information reproduction apparatus. It is a figure which shows an example of a driven pin and a sliding member. It is a figure which shows the operation example of the shutter opening / closing mechanism of a cartridge. FIG. 10 is an enlarged view of B in FIG. 9. FIG. 11A is a cross-sectional view of FIG. 9A, and FIG. 11B is a cross-sectional view of FIG. 9B. It is a figure which shows other embodiment of a sliding member.

Explanation of symbols

2 Information Reproducing Device 10 Cartridge 11 Opening 13 Wheel 13c Recessed 15 Shutter 17 Plate Spring 18 Driven Pin 18a Sliding Member

Claims (6)

A follower that engages with a recess formed in a wheel that opens and closes the shutter of the cartridge through the opening of the cartridge;
A sliding body for restricting movement of the driven body in the cartridge direction;
A shutter opening and closing device comprising:   The sliding body slides along an end surface on the opening side of the cartridge, and controls the movement of the driven body so that the driven body avoids contact with the main body of the cartridge. The shutter opening and closing device according to claim 1.   The shutter opening / closing apparatus according to claim 1, wherein the driven body and the sliding body are integrally formed.   2. The shutter opening and closing according to claim 1, wherein the sliding body is disposed between the cartridge and the driven body along an end surface on the opening side of the cartridge and slides with a part of the driven body. apparatus.   The shutter opening / closing apparatus according to claim 1, further comprising an urging unit that urges the follower toward the cartridge. The shutter opening and closing device according to any one of claims 1 to 5,
Reproducing means for reproducing information of a recording medium stored in the cartridge;
An information reproducing apparatus comprising:

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