WO2005027112A1

WO2005027112A1 - Recording medium drive device

Info

Publication number: WO2005027112A1
Application number: PCT/JP2004/013058
Authority: WO
Inventors: Hitoshi Nagata; Yoshimitsu Fukushima; Yuji Morita
Original assignee: Pioneer Corporation
Priority date: 2003-09-09
Filing date: 2004-09-08
Publication date: 2005-03-24
Also published as: JPWO2005027112A1

Abstract

A recording medium drive device, wherein a base member (20) is swingably fitted to a frame (10), and a guide mechanism is installed so that a disk table (23) can move on a straight line vertical to the capture surface of a recording medium and passing the center of the recording medium. Accordingly, the disk table (23) is not misaligned and, even if a disk (91) is largely displaced in a cartridge type recording medium, the disk (91) can be securely captured. Thus, a capture error due to misalignment can be completely avoided and the accuracy of the recording medium drive device (100) can be improved.

Description

Specification

Recording medium drive

Technical field

The present invention relates to a recording medium driving device that captures a recording medium on a capture surface and performs at least reproduction or recording.

Background art

Conventionally, recording media such as CDs (Compact Discs) and MDs (Mini Discs) that can store a large amount of recording information have been used. Furthermore, in recent years, DV D (Digital

Versatile Discs) are being developed, and research on so-called Blu-ray Discs is rapidly progressing as a next-generation media. In addition to bare disks such as CDs, some recording media are used in cartridges to protect the recording surface.

[0003] In such reproduction and Z or recording of a recording medium, a recording medium drive dedicated to an optical recording medium is used (for example, Patent Document 1). In such a recording medium driving device, when the recording medium is placed on a holding surface of the recording medium driving device (for example, a mounting surface of a tray on which the recording medium is placed), and the disc is inserted into the device, the recording medium is placed on the recording medium. The base member, which is rotatably provided on a part of the frame, interlocks with the recording medium and rotates in an arc around the rotation point. Then, the disk table provided on the base member engages with a circular engagement hole provided at the center of the recording medium (capture), and at the same time, a data table provided on the upper part of the disk table via the recording medium.

The disk is held by clamping with the disk holding mechanism. The disk table is a rotatable member and rotates at high speed while supporting the recording medium. At this time, a recording / reproducing mechanism is provided at a position facing the recording / reproducing surface of the recording medium, and the recording / reproducing mechanism performs reproduction and Z or recording of the recording medium.

Patent Document 1: Japanese Patent Application Laid-Open No. 2000-228017 (FIGS. 1 and 2)

Disclosure of the invention

Problems the invention is trying to solve [0005] While the force is applied, the base member of Patent Document 1 is provided on the frame so as to rotate in an arc around the rotation point, so that the center position of the disk table with respect to the plane of the recording medium is adjusted. It changes depending on the height of the base member. For example, in a recording medium driving device in which the recording medium 90 is placed on the tray 950 as shown in FIG. 11, the tray 950 usually has an upper holding surface 951 for a 12 cm disk and a lower holding surface 951 for an 8 cm disk. The lower holding surface 951 is provided with a step so that the lower holding surface 951 is closer to the standby position (the position farthest from the driving position) of the disk table 923. In such a case, when the recording medium is engaged by raising and lowering the base member 960, the position E2 of the disk table 923 for capturing the recording medium 90 on the lower holding surface 952, and the recording medium on the upper holding surface 951. From the position E1 of the disk table 923 to be captured, a deviation F occurs in a direction parallel to the main surface of the recording medium (center deviation F).

In addition, when the recording medium is placed with the tray placed vertically, whether the recording medium is of a bare disk type or a cartridge type that is not housed in a cartridge, the transport height on the tray (the The capture position E3, E4) is not determined by its own weight. For this reason, for example, in the case of a multi-junction medium drive device in which a cartridge-type recording medium 90 is stored as shown in FIG. F occurs. This misalignment F sometimes prevented Disk 91 from being accurately captured.

Here, in order to solve this problem, a force that vertically moves the disk table vertically with respect to the holding surface on which the recording medium is placed by moving the base member in parallel up and down is also considered. In such a device, the mechanism for moving the disk table up and down in parallel is enormous, so that the space of the recording medium driving device is squeezed, and when it is desired to incorporate the device into a personal computer or the like, the size does not match and the size becomes inappropriate. In addition, the structure for moving the disk table in parallel is very complicated and the price is high.

[0007] The problem to be solved by the present invention includes the above problem as an example. The present invention has been made in view of the above circumstances, and has as its object to provide a recording medium driving device capable of eliminating a capture error of a recording medium due to a center shift of a disk table.

Means for solving the problem [0008] A recording medium driving device according to the present invention provides a frame, a disk table that captures a recording medium housed in the frame and having an engagement hole at the center with a capture surface, and a base member to which the disk table is attached. A recording medium driving device for reproducing or recording information on at least the recording medium, wherein the base member is swingably attached to the frame, and a swing locus substantially at the center of the disk table. Is a straight line, and a guide mechanism is provided so that the engagement hole of the recording medium is located on this locus.

[0009] The recording medium driving device of the present invention includes a frame on which a first guide and a second guide are formed, a first shaft and a second shaft which are engaged with the first guide and the second guide. A recording medium drive that includes a base member having a shaft formed thereon, and a disk table that is mounted on the base member and that captures the recording medium with a capture surface, and at least reproduces or records information on the recording medium. An apparatus wherein the first axis is moved along the first guide by the base member swinging about the second axis, and the second axis is the first axis. Is moved along the second guide by moving along the first guide.

Brief Description of Drawings

FIG. 1 is an overall perspective view of a recording medium driving device according to the present embodiment.

FIG. 2 is an exploded perspective view of the present embodiment.

FIG. 3 is a front view of the embodiment with a tray removed.

FIG. 4 is a perspective view in the state of FIG. 3;

FIG. 5 is a cross-sectional view of a frame and a base member.

FIG. 6 is another sectional view of the frame and the base member.

FIG. 7 is a perspective view showing a tray of the present embodiment.

FIG. 8 is an enlarged front view of a part of the tray of FIG. 8;

FIG. 9 is a view showing the movement of the base member of the present embodiment.

FIG. 10 is a front view showing a recording medium used in the present embodiment.

FIG. 11 is a cross-sectional view showing a capture position of a conventional recording medium driving device.

[FIG. 12] FIG. 12 shows a capture position when a conventional recording medium drive is placed vertically. FIG.

Explanation of symbols

[0011] 10… frame, 20 ··· base member, 21 ··· first axis, 22 ··· second axis, 23 ··· disk table, 30 ··· tray, 100… recording medium drive , 151… first guide groove, 151Α ··· first guide mechanism, 152… second guide groove, 152A… second guide mechanism, 500 ··· interlocking mechanism.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[Configuration of recording medium driving device]

1 to 9 show a recording medium driving device according to an embodiment of the present invention. FIG. 1 is an overall perspective view of the present embodiment, and FIG. 2 is an exploded perspective view of the recording medium driving device of the present embodiment. 1 and 2, reference numeral 100 denotes a recording medium drive for recording and Z or reproducing a substantially planar recording medium. The recording medium drive 100 includes a frame 10 having a substantially rectangular planar shape and a frame 10 having a substantially rectangular shape. A base member 20 attached to the inside of the frame 10, a tray 30 that can be inserted into and removed from the frame 10, a clamp mechanism 40 that covers the upper surface of the frame 10, and a metal diagram that covers the outer peripheral surface of the frame. In addition, a casing is provided. The recording medium driving device 100 can be installed in both a horizontal position where the recording medium is placed horizontally and a vertical position where the recording medium is placed vertically.

[Recording medium reproduced and Z or recorded by recording medium drive]

The recording medium used in the recording medium driving device 100 includes a bare disk type recording medium such as a CD which uses the disk 91 as it is, and a cartridge type recording medium 90 which stores the disk 91 in a cartridge 92. (See Figure 10). The disk 91 is formed in a disk shape having a circular hole 93 at the center, and has a recording surface on the surface. The cartridge 92 of the cartridge type recording medium 90 is provided with an opening 97 from the outer periphery toward the center. From this opening 97, reproduction and Z or recording of the disk 91 inside can be performed. A cover 94 is provided to protect the disc 91 from this opening 97 except during playback and Z or recording. The cover 94 can be slid in either direction in one of two sides adjacent to one side where the opening 97 is provided, and the opening 94 is opened by sliding movement of the cover 94. . Also, cart A cartridge information portion 95 is provided at one end or both ends of the cartridge 92. The cartridge information section 95 includes a switching section for determining whether or not writing to the disk 91 is permitted.

[Configuration of Frame]

In FIG. 2, a frame 10 is a member formed of a synthetic resin or the like, and has a flat rectangular bottom portion 11, a back portion 12 integrally formed on one of short-side peripheral portions of the bottom portion 11, and A front surface 14 which is integrally formed on the other side of the short side of the peripheral portion of the bottom portion 11 by rising from the bottom portion 11 and a height dimension substantially the same as the rear portion 12 which is integrally formed on both long sides of the peripheral portion of the bottom portion 11. An upper surface opening 13 which is surrounded by the side surface 15 and the rear surface 12 and faces the bottom 11 is formed.

Here, in the recording medium driving device 100, the upper opening 13 side is the upper surface side, the lower portion 11 side is the lower surface side, and the rear portion 12 does not matter whether the recording medium driving device 100 is placed horizontally or vertically. Side is defined as the back side, and the front side 14 is defined as the front side. Also, the direction from the front side to the back side is the forward direction, the opposite is the retreat direction, the direction from the upper side to the lower side is the up-down direction, and the direction to the side surface perpendicular to the front-back direction is the side surface. Direction.

[0015] The bottom portion 11 has a side surface portion 15, a front surface portion 14, and a back surface portion 12 formed at a peripheral portion thereof, and a large hollow hole is provided inside the bottom portion 11. The hollow hole at the bottom 11 is a space for storing an electric circuit (not shown), and the operation of the recording medium driving device 100 is controlled by the electric circuit.

The rear portion 12 has an external terminal portion (not shown) on the lower surface side, and the external terminal portion is electrically connected to an electric circuit provided on the bottom portion 11 in the frame. The external terminal section has a power cable connection section for supplying power to the recording medium drive, and an external terminal connection section for enabling connection with an external device such as a personal computer and communicating with the outside. ! The information reproduced and the Z or the information to be recorded by the recording medium driving device 100 are mainly input / output to / from this external terminal.

A sliding piece 150 for slidably supporting the tray 30 is provided on the inner wall of the side surface section 15 from front to back. The base member 20 swings on the back side of the side surface portion 15. It is attached to the place.

The front portion 14 is formed to have a smaller dimension in the vertical direction than the rear portion 12 and the side portion 15, and an opening 141 through which the tray 30 is inserted and removed is provided on the upper surface side of the front portion. An operation unit (not shown) is provided on the front unit 14, and the operation unit is located at the bottom 1

1 is connected to an electric circuit. The operation unit includes an eject button for taking the tray 30 in and out, a volume knob for adjusting the volume, an inlet of an earphone, and the like.

A clamp mechanism 40, which is one of mechanisms for holding a recording medium, is attached to the upper surface opening 13.

(Configuration of base member 20)

FIG. 3 is a front view of the recording medium driving device 100 with the clamp mechanism 40 and the tray 30 removed, and FIG. 4 is an overall perspective view of the recording medium driving device 100 with the clamp mechanism 40 and the tray 30 removed.

2 to 4, the base member 20 is formed by pressing a metal plate material or the like. At a position on the front surface side of the base member 20 that is separated by a predetermined distance and substantially at the center in the side surface direction, a plane circular disk table 23 that is rotatable about a vertical axis as a rotation axis is mounted. The disk table 23 is provided so as to protrude from the upper surface of the base member 20 toward the upper surface. The disk table 23 is provided with a rotation drive mechanism (not shown) such as a motor on the lower surface side, and the rotation drive mechanism is electrically connected to the electric circuit by a flexible board made of synthetic resin in which pattern wiring is embedded. Have been. When an electric signal of a drive command is transmitted from the electric circuit, the rotation drive mechanism rotates the disk table 23 at high speed.

The disk table 23 includes a mounting portion 232 on which a recording medium is mounted, and a tapered portion 231 provided at the center of the mounting portion 232 and having a tapered upper surface having a smaller diameter. The tapered portion 231 is engaged with the circular hole 93 of the disk 91. As shown in FIG. 3, a magnet 231A is fitted on the upper surface of the tapered portion 231 and a synthetic resin material that protects the surface of the recording medium and prevents slippage is provided on the upper surface of the mounting portion 232. The sheet member 232A is adhered. Even if the disk table 23 rotates at high speed, the sheet Since the medium does not slip, the recording surface of the recording medium is not damaged.

A hole 26 for recording / reproducing mechanism is provided on the back side of the disk member 23 of the base member 20, and a recording / reproducing mechanism 27 is provided in the hole 26 for arranging the recording / reproducing mechanism. (See Figure 3). The recording / reproducing mechanism 27 is shown only in FIG. 3 and is omitted in other drawings. The recording / reproducing mechanism 27 is a device for irradiating the recording surface of the recording medium with a laser beam to record, record, or reproduce information, and moves back and forth along the front and rear directions of the recording / reproducing mechanism arrangement hole 26 of the base member 20. It is possible. A flexible cable (not shown) made of synthetic resin is connected to a part of the recording / reproducing mechanism 27, and the recording / reproducing mechanism 27 is electrically connected to the electric circuit via the flexible cable.

At one corner of the front side of the base member 20, a detection board mounting portion 211 protruding toward the front side is formed. A flat detection board 60 is fixed to the lower surface side of the detection board mounting section 211. For this fixing, fixing by an adhesive, fixing by screws, fixing by welding, or the like can be used. On the detection board 60, a detection switch 61 is provided upright toward the upper surface, and the detection switch 61 is connected to the electric circuit via a wiring (not shown) extending to the lower surface of the base member 20. At the tip of the detection switch 61, a detection pin 611 is provided facing the upper surface! /

[Attaching the base member to the frame]

FIG. 5 is a cross-sectional view of the recording medium driving device 100, and FIG. 6 is another cross-sectional view of the recording medium driving device 100.

As shown in FIGS. 2 to 6, on the side surface of the base member 20, a first shaft 21 and a second shaft 22 projecting toward the side surface portion 15 are provided. The first shaft 21 is provided on both side surfaces of the base member 20 whose substantially central force of the disk table 23 is also directed to the side surface portion 15, and the second shaft 22 is provided on the back side of both side surfaces of the base member 20.

A first guide groove 151 is formed integrally with the side surface 15 at a position corresponding to the first shaft 21 inside the side surface 15 of the frame 10. At this time, since the first shaft 21 is provided on both outer surfaces of the base member 20, first guide grooves 151 are provided on the inner surfaces of both side portions 15 of the frame 10 so as to correspond to the first shaft 21. Have been. This first guide groove 151 It is formed so as to be slightly inclined from the front side to the back side from the direction perpendicular to the bottom 11. Since the disk table 23 is located on the upper surface side of the base member 20, if the first guide groove 151 is provided vertically, the first shaft 21 moves vertically with respect to the capture surface. The swing locus of the disk table 23 is not perpendicular to the capture surface but draws a slightly inclined line. Therefore, the first guide groove 151 is formed to be slightly inclined to guide the trajectory of the disk table 23 vertically so that the swing trajectory of the disk table 23 is perpendicular to the capture surface. ing.

Further, a shaft support member 153 is fixed to an end of the side surface 15 on the back side. The shaft support member 153 is a member having a substantially L-shaped cross section. Three shaft fixing holes 153A are formed in one piece of the L-shape, and the other piece has a second guide extending in the front and back directions. A hole 152 is provided. On the back side of the side surface portion 15, there is a flat portion 154 to which the shaft support member 153 is attached. The flat portion 154 has two bearing protrusions 154A projecting to the upper surface side, and A bearing hole 154B is provided therebetween. A bearing protrusion 154A is fitted into two ends of the shaft fixing hole 153A, a screw is passed through the remaining center shaft fixing hole 153A, and a screw is screwed into the bearing hole 154B so that the shaft supporting member 153 is a flat portion. 154 is securely fixed. Also, at this time, the shaft support member 153 is attached so that the shaft support member 153 is provided in parallel with the inner wall of the side surface portion 15 via another piece having the force shaft fixing hole 153A in which the second guide hole 152 is provided. RU

Here, in the present embodiment, the first shaft 21 and the first guide groove 151 make the swing trajectory substantially at the center of the disk table 23 perpendicular to the capture surface of the disk 91 of the recording medium. Further, a first guide mechanism 151A as a first guide for guiding the recording medium to pass through the center of the recording medium is configured, and the base member 20 is disc-shaped by the second shaft 22 and the second guide hole 152. A second guide mechanism 152A is configured as a second guide that escapes in a direction intersecting the swing locus of the bull 23.

At this time, the approximate center of the disk table 23 refers to a range including the tapered portion 231 and a part of the mounting portion 232, that is, the circular hole 93 of the disk 91 and the disk 93 when the disk 91 is captured. This is the range where the taper part 231 of the table 23 And

FIG. 5 is a side cross-sectional view when the base member 20 has reached a position (standby position) where the capture surface force of the recording medium has also moved farthest away, and FIG. 6 shows that the recording medium is rotationally driven. FIG. 4 shows a side cross-sectional view of the position (drive position). As shown in FIGS. 5 and 6, when the base member 20 is in the standby position, the first shaft 21 is located at the lowermost side of the first guide groove 151, and at this time, the second shaft 22 is located on the rear surface of the second guide hole 152. Has escaped to the side. On the other hand, at one position of the capture, the first shaft 21 moves to the upper surface side of the first guide groove 151, and the second shaft 22 escapes to the front side of the second guide hole 152. In this manner, by regulating the movement of the base member 20 by the first guide mechanism 151A and the second guide mechanism 152A, it is possible to swing the disk table 23 so that the substantially center thereof is perpendicular to the capture surface. . In the present embodiment, the disc table 23 is swung so that the approximate center thereof is perpendicular to the capture surface. However, the present invention is not particularly limited to this. What is necessary is just to rock | fluctuate substantially perpendicularly in the range which the par part 231 fits.

[Structure of Tray]

7 is a perspective view of the tray 30, and FIG. 8 is a front view of the front side of the tray 30. The tray 30 is a member formed of a synthetic resin such as ABS resin, and has a mounting surface 31 formed in a flat rectangular shape, and a rising portion 32 rising from the front side of the periphery of the mounting surface 31. have. A linear groove (not shown) is formed integrally on the lower side surface of the tray 30 along the direction in which the tray 30 moves forward and backward, and the sliding piece 150 of the side surface portion 15 is engaged with this groove. . The tray 30 can smoothly advance and retreat in the front and back directions by these grooves and the sliding pieces 150. The mounting surface 31 can mount either a cartridge type recording medium or a bare disk type recording medium, and has a circular concave portion for mounting the bare disk type.

A slider 33 is attached to the back side of the tray 30 as a positioning member for a recording medium formed of a synthetic resin or the like. The slider 33 is urged toward the front by an elastic member (not shown) such as a spring. Thus, when a cartridge type recording medium is placed on the placement surface 31, the cartridge can be sandwiched and positioned between the slider 33 and the rising portion 32. An arc portion 33 A is formed on the front side of the slider 33, and is formed so as to serve as a positioning guide when a bare disk type recording medium is mounted on the mounting surface 31. At this time, when the bare disk is placed on the mounting surface 31 and the slider 33 is urged to the front side by an elastic member (not shown), the slider 33 interferes with the peripheral edge of the bare disk, and The slider 33 is provided with a slider positioning portion (not shown) because the rotation of the slider 33 may be hindered. By the slider positioning portion, the arc portion 33A of the slider 33 is regulated so as not to move to the front side from a position along the peripheral edge of the bare disk. A holding portion 331 is provided on a part of the upper surface side of the arc portion of the slider 33 so as to be parallel to the mounting surface 31. The holding portion 331 is formed so as to cover the bare disk when the bare disk is placed on the mounting surface 31.

[0027] At both ends of the rising portion 32 of the tray 30, disk holders 35 are rotatably mounted. The disc holder 35 has an elongated holder body 350, a holding part 351 formed integrally with the holder body 350 at the distal end, and a holding part 351 opposed to the mounting surface 31, and a base perpendicular to the mounting surface 31 at the base end. A rotating pin (not shown) provided so as to be able to rotate between the inner surface of the rising portion 32 and the inner surface of the side edge of the tray 30. At both ends of the rising portion 32 of the tray 30, there are provided holder support holes 321 for inserting the rotating pins of the disk holder 35 in a vertical direction. The disc holder 35 is rotatably attached to this holder one support hole 321! /

[0028] At both ends on the front side of the mounting surface 31 of the tray 30, detection holes 34 as detection parts are formed. When the tray 30 is stored inside the frame 10 and the base member 20 swings and the disk table 23 moves to the tray 30 side, the detection pins 611 of the detection board 60 attached to the base member 20 also move to the tray 30 side. Go to At this time, the detection pin 611 is inserted through the detection hole 34 and protrudes to the upper surface side of the mounting surface 31. This is used to detect information on a cartridge type recording medium when a cartridge type recording medium is used for the mounting surface 31.

A detection pin 611 at the tip of a detection switch 61 protruding from the mounting surface 31 is used to detect information on the recording medium from a cartridge information portion 95 provided on the cartridge type recording medium (see FIG. 6). For example, cartridge storage type recording As the medium, there is a recording medium capable of selecting writable or unwritable, which has a cartridge information portion 95 for writable or unselectable in the cartridge, and blocks the cartridge information portion 95. Some cartridges can be written, and when the cartridge information part 95 is exposed, writing becomes impossible.

The mounting surface 31 is provided with a detection hole 34 at a position corresponding to the cartridge information portion 95, and a detection pin 611 protrudes from the detection hole 34. When the cartridge information section 95 is open, the tip of the detection pin 611 enters the cartridge information section 95, and it can be determined that writing to the recording medium is impossible, while the cartridge information section 95 is closed. In this case, the detection pin 611 pushes the detection switch 61 without entering the hole, whereby it can be determined that writing is possible. Further, the cartridge information portion 95 is not limited to writable and non-writable, and may indicate other information such as, for example, the storage capacity of a cartridge-type recording medium. As described above, when the cartridge has a large amount of information, it is considered that it is preferable to increase the size of the detection hole portion 34 in order to increase the number of the detection hole portions 34 of the mounting surface 31 accordingly. You.

[0029] Substantially the center of the mounting surface 31 of the tray 30 is a position through which the disc table 23 passes, and a working hole 36 is provided from this position toward the rear. The working hole 36 is inserted into the disc table 23 which is engaged with the recording medium provided on the mounting surface 31 and the recording / reproducing mechanism 27 for reproducing and Z or recording the recording medium. It is the passage of the laser beam that is directed toward the surface.

[Placement of Recording Medium]

In this tray 30, the disk holder 35 can be positioned at the most appropriate position depending on the type of recording medium and the manner of installing the entire device. First, a case will be described in which the recording medium driving device 100 is installed (horizontally placed) so that the mounting surface 31 of the tray 30 is horizontal. When a bare disk is used as a recording medium, the disk holder 35 is preferably located at B in FIG. That is, the distal ends of the two disk holders 35 are arranged at a first position B (shown by a solid line in FIG. 8) at which the distal ends of the two disk holders 35 can contact the peripheral edge of the bare disk. In the first position B, the bare disk can be positioned by the disk holder 35 so that the bare disk is not shifted in the horizontal direction. At this time, place the disc holder lightly on the periphery of the bare disc. It is preferable that the disc holder 35 is arranged at a position where it does not hinder the rotation when the bare disc is captured by the disc table 23 and is rotated at high speed by being abutted or arranged with a slight gap. ! / ,.

When a cartridge type recording medium is used as the recording medium, the disk holder 35 is arranged so as to abut on the storage position indicated by the alternate long and short dash line A in FIG. An engagement protrusion 311 for positioning the cartridge is provided on the mounting surface 31 from the mounting surface 31 toward the upper surface side. The cartridge is provided with an engagement recess 96 (see FIG. 10) which engages with such an engagement protrusion 311 at a predetermined position, and positioning is performed by engaging the engagement protrusion 311 with the engagement recess 96. I can do it. Further, in the recording medium driving device 100 of the present embodiment, the cartridge can be biased to the front side by the slider 33 as described above, and the cartridge is sandwiched between the slider 33 and the rising portion 32 to ensure the positioning. It can be done in a straightforward manner and does not shift in the plane direction. As described above, by moving the disk holder 35 to the storage position A of the rising portion 32, a sufficient space for mounting the cartridge can be secured. Further, since sufficient space for the mounting surface 31 of the tray 30 can be ensured, for example, the degree of freedom in the location, size, quantity, etc. of the detection holes 34 is increased, and various types of cartridge type recording media are provided by the detection pins 611. Information can be collected. Further, since the disk holder 35 is stored in the rising portion 32, it is possible to prevent interference with the detection switch 61 and the detection hole 34 protruding from the mounting surface 31.

Next, a case will be described in which the recording medium driving device 100 is installed (vertically installed) such that the mounting surface 31 of the tray 30 is in the vertical direction. When a bare disk is used as a recording medium, the disk holder 35 is arranged at a second position indicated by a two-dot chain line C in FIG. In other words, the disc holder 35 is rotated to a position where the disc holder 35 comes into contact with the engaging projection 311, and the tip of the disc holder 35 is arranged so as to contact a part of the peripheral edge of the bare disc. At this time, a pressing portion 351 is provided at the distal end of the disc holder 35 in parallel with the mounting surface 31, and the peripheral edge of the bare disk is formed between the pressing portion 351 and the mounting surface 31. On the back side, a pressing portion 331 provided on the front surface of the slider 33 is disposed so as to cover the bare disk. The holding portions 351 and 331 prevent the bare disk from coming off the mounting surface 31. The presser parts 351, 331 and the mounting surface 31 are separated by a certain distance, and When the bull 23 captures the bare disk, the bare disk does not interfere with the holding portions 351 and 331. In this case, the disk holder 35 used at this time is a vertically lower side, so that only one of the disk holders 35 can sufficiently support a bare disk, and the other disk holder 35 is similarly moved to the second position C. Alternatively, only the other disk holder 35 may be arranged at the first position B.

When a cartridge type recording medium is used, the mounting method is the same for horizontal and vertical placements, and therefore, the mounting method for vertical placement is omitted.

[Configuration of Clamping Mechanism]

Returning to FIGS. 1 and 2, the clamp mechanism 40 is attached to the upper opening 13 of the frame 10 as described above, and the clamp mechanism 40 holds the recording medium engaged by the disk table 23 on the disk. It has a mechanism to keep it from coming off the table 23! A clamper 41 is provided at a position of the clamp mechanism 40 facing the disk table 23, and the clamper 41 is supported by a clamper holder 42. The clamper 41 is formed of a synthetic resin, and a disc-shaped metal member (not shown) is fitted on the upper surface of the center portion. The clamper holder 42 is provided with a leaf spring 43, which acts so as to urge the clamper holder 42 toward the upper surface when it is lowered to the lower surface.

[Engagement of recording medium]

When the recording medium is mounted on the mounting surface 31 of the tray 30 and the tray 30 is stored in the frame 10, the circular hole 93 of the disk 91 is engaged with the tapered portion 231 of the disk table 23, and The disk 91 is placed on the sheet member 232A of the part 232 and is captured. Since the magnet is fitted into the tapered portion 231 of the disk table 23, the disk 91 can be sandwiched by the clamper 41, whereby the disk is fixed so as not to come off from the disk table 23. At this time, the clamper 41 comes into contact with the disk table 23 side by the magnet 231A of the disk table 23, and accordingly, the clamper holder 42 also moves to the lower surface side. Then, the disk table 23 rotates at a high speed during reproduction and Z or recording of the disk 91, and reproduction and Z or recording of information on the recording surface are performed by the recording / reproducing mechanism 27 as described above.

When removing the disk 91, the disk table 23 moves to the lower side, 231A and the clamper 41 are separated from each other, and the clamper 41 is pushed upward together with the clamper holder 42 by the leaf spring 43 to the upper surface side. When the disk table 23 moves below the mounting surface 31, the disk is mounted on the upper surface of the mounting surface 31, and the recording medium can be taken out by ejecting the tray 30 from the frame 10. .

[Connection of Base Member 20 and Tray]

Returning to FIG. 2, FIG. 3, and FIG. 4, an interlocking mechanism 500 is provided on the front side of the frame 12. The interlocking mechanism 500 includes a drive cam 50 engaged with the base member 20, a first rack 52 integrally formed with the drive cam 50, and a first gear 531 to a fourth gear 534 coupled with the first rack 52. A gear mechanism 53 having a motor unit 54 coupled to the gear mechanism 53 and driven by control from the electric circuit; a second rack (not shown) provided on the lower surface side of the tray 30 and coupled to the gear mechanism 53; It is equipped with.

The drive cam 50 is formed of a synthetic resin or the like, and is disposed so as to be able to reciprocate in a lateral direction orthogonal to the direction in which the tray 30 advances and retreats. A force groove 51 extending in the lateral direction is formed on the rear side of the drive cam 50, and the cam engaging pin 24 of the base member 20 is engaged with the cam groove 51. The cam groove 51 is formed in an inclined shape such that one end is disposed on the upper surface side and the other end is disposed on the lower surface side. When the drive cam 50 reciprocates in the side direction, the cam engaging pin 24 moves between both ends of the cam groove 51 along the inclined portion, whereby the base member 20 can reciprocate in the vertical direction. Become! /

The first rack 52 formed on one side of the drive cam 50 is engaged with the third gear 533 of the gear mechanism 53. On the lower surface side of the third gear 533, a second gear 532 having a diameter larger than that of the third gear 533 is formed, and this second gear 532 is combined with the first gear 531 and the fourth gear 534. T! /

The first gear 531 is combined with the motor gear 542 of the motor unit 54. The motor gear 542 is connected to the wheel 541 by a ring-shaped belt 543 made of synthetic resin. A motor body (not shown) is provided on the lower surface side of the wheel 541 via the frame 10, and the motor body force is directly applied with a driving force. The motor body is electrically connected to the electric circuit, and the rotation of the motor body is controlled by the electric circuit. The fourth gear 534 meshes with a second rack (not shown) provided on the lower surface side of the tray 30. ing.

When a tray advance / retreat instruction is transmitted to the electronic circuit by an eject button (not shown) or an external input, the electronic circuit drives the motor body. When the motor body rotates, the rotation is transmitted to the first gear 531 of the gear mechanism 53 via the wheel 541 and the motor gear 542. Then, rotational power is transmitted from the first gear 531 to the second gear 532, and the fourth gear 534 that is combined with the third gear 533 and the second gear 532 integrally provided with the second gear rotates. Due to the rotation of the third gear 533, the drive cam 50 that engages with the third gear 533 in the first rack 52 moves in the lateral direction, and the base member 20 that engages with the drive cam 50 moves upward or downward. Moving. In addition, the rotation of the fourth gear 534 causes the tray 30 coupled with the fourth gear 534 in the second rack to move to the rear side or the front side.

Thus, the base member 20 and the tray 30 are connected by the drive cam 50 and the gear mechanism 53. When the tray 30 is ejected, the tray 30 is ejected after the disc table 23 first moves to the standby position.

[Operation of Disk Table]

The movement of the disk table 23 when the base member 20 swings will be described with reference to FIGS. 5, 6, and 9. FIG.

FIG. 9 is a diagram showing the position of the disk table 23 when the base member 20 has swung. FIG. 9 shows an example in which a cartridge type recording medium 90 is placed on the placing surface 31. The disc 91 can move freely in the cartridge 92, and therefore is formed at the center of the disc 91! The circular hole 93 may slightly deviate the center force of the cartridge 92. When the disc 91 is positioned on the lower surface side of the cartridge 92, the position at which the disc table 23 captures the disc 91 is defined as a capture position D, and the disc at this position is defined as 91D. On the other hand, when the disk 91 is positioned on the upper surface side of the cartridge 92 and the disk table 23 captures the disk 91, this position is defined as a capture position U, and the disk at this time is defined as 91U.

[0040] As described above, the swing locus of the base member 20 at the substantially center position of the disk table 23 by the first guide mechanism 151A and the second guide mechanism 152A is regulated to move on the dashed line L. Is controlled. That is, the disk table 23 performs a linear motion so as not to come off from the circular hole of the recording medium in the cartridge 92, and as a result, the recording medium can be more reliably captured even when the capture position of the recording medium changes. It becomes. For example, as described above, when the capture position is not determined by the weight of the disk 91 itself, such as when the recording medium driving device 100 is placed vertically, the disk 91 is placed in the cartridge 92 in the drawing in the figure. The disk 91 may move to the position indicated by 91U or 91D or a position between them, and as a result, the capture position of the disk 91 may take a position such as the capture one position D or the capture position U (see FIG. 9). In such a case, the circular hole 93D of the disk 91D and the circular hole 93U of the disk 91U are both biased toward the front side or the rear side. If the trajectory draws an arc without moving along the dot-dash line L, the disk table can be positioned at the circular hole of the disk at capture position D, but the center of the disk table at capture position U. , Which increases the likelihood of a capture error. On the other hand, the locus of the center of the disk table 23 of the present embodiment moves linearly so that the circular hole of the recording medium in the cartridge 92 does not shift, so that the capture position of the disk 91 changes. In this case, the displacement between the disk table 23 and the circular hole of the recording medium does not become so large as to cause a capture error, so that the disk table 23 can more reliably capture the disk 91D. In addition, according to the present embodiment, the center deviation at the capture position can be absorbed in both the vertical and horizontal arrangements, and the capture error can be reduced / reduced.

[Effects of Recording Medium Drive Device of Present Embodiment]

According to the recording medium driving device 100 as described above, the following effects can be obtained.

(1) The recording medium driving device 100 includes a frame 10, a disk table 23 for capturing a recording medium housed in the frame 10 and having an engagement hole at the center with a capture surface, and a base member to which the disk table 23 is attached. The base member 20 is swingably attached to the frame 10, the swing locus substantially at the center of the disk table 23 is linear, and the engaging hole of the recording medium is located on this locus. Guide Guide mechanism. Thus, the disk table 23 can reliably capture the recording medium even if the capture position of the disk 91 changes in a recording medium in which the center does not deviate. Therefore, a capture error can be avoided, and the recording and driving or recording or Z or reproduction accuracy of the recording medium driving device 100 becomes very good.

(2) The recording medium driving device 100 includes a frame 10 provided with a first guide mechanism 151A and a second guide mechanism 152A, and a first shaft associated with the first guide mechanism 151A and the second guide mechanism 152A. A base member 20 having a second shaft 22 formed thereon and a disk table 23 mounted on the base member 20 and capturing a recording medium on a capture surface are provided. Then, the first shaft 21 moves along the first guide groove 151 by the base member 20 swinging about the second shaft 22, and the second shaft 22 By moving along the guide mechanism 151A, it moves along the second guide mechanism 152A. Thereby, the smooth swinging of the base member 20 can be guided, and since a complicated structure is unnecessary, the assemblability and the production cost are low.

(3) At least a part of the first guide mechanism 151A is formed on the frame 10 so that the movement locus substantially at the center of the disk table 23 is a straight line. Thus, when the base member 20 swings along the first guide groove 151, the disk table 23 can move linearly with respect to the circular hole of the recording medium. Accordingly, the radial trajectory at the approximate center of the disk table 23 can be easily regulated to a straight line with respect to the circular hole of the recording medium, and a complicated structure is not required. Production costs are not strong either.

(4) The first shaft 21 and the second shaft 22 of the base member 20 move in different directions from each other! /, So that the guide mechanism can be divided into two mechanisms to share the respective movements. The swing of the base member 20 can be easily and reliably guided without requiring a complicated structure, and the center of the disk table 23 can be prevented from being shifted.

[0044] (5) The first shaft 21 and the second shaft 22 protrude from the side surface of the base member 20 toward the frame 10, and the first guide mechanism 151A and the second guide mechanism 152A are provided on the inner side surface of the frame. The first guide groove 151 and the second guide hole 152 are provided. As a result, the first guide mechanism 151A and the second guide mechanism 152A do not require a complicated structure, so that the assemblability is improved and the production cost is low. In the present invention, the present invention is not limited to this. For example, it goes without saying that the first shaft 21 and the second shaft 22 may be provided on the inner surface of the frame, and the first guide mechanism 151A and the second guide mechanism 152A may be provided on the side surface of the base member 20.

(6) The tray 30 is provided with a mounting surface 31 provided with a detection portion for mounting the recording medium and detecting information of the recording medium when the cartridge type recording medium is mounted, and the mounting surface 31. A disk holder 35 for positioning a bare disk type recording medium on the raised portion 32. The stored position A and the second position C are provided. The disc holder 35 can be retracted so as not to overlap with the detection hole 34 of the mounting surface 31 by moving the disc holder 35 to the storage position A. As a result, the area where the detection portion such as the detection hole 34 is formed on the mounting surface 31 is increased, and the detection information for detecting the information of the cartridge when the cartridge type recording medium is mounted. The detection site such as the hole 34 can be sufficiently formed. In addition, as the force cartridge has more information, it is necessary to increase the number of the detection holes 34 on the mounting surface 31 or increase the size of the detection holes 34 accordingly. However, since the mounting surface 31 has a sufficient area, these detection sites can be easily formed on the mounting surface.

(7) The tray 30 is provided with a detection hole 34 as a detection site, and the detection unit 611 is inserted from the lower surface side to the upper surface side of the detection hole 34, so that the mounting surface 31 When the recording medium of the cartridge type is placed on the cartridge, the information of the cartridge information portion can be detected by the detection pin 611. Therefore, a complicated structure is not required as a detection portion, and information of the cartridge can be detected with a simple structure, so that assemblability is improved.

(8) Since the disk holders 35 are provided at both ends of the rising portion 32, when a bare disk type recording medium is placed, the disk holder 35 is moved to the first position B and the second position B. The disk can be moved to position C to position the disk. This ensures that the disc can be positioned in a horizontal position and does not deviate from the mounting surface 31 of the tray 30.

(9) When a bare disk type recording medium is installed with the recording medium driving device placed in a horizontal position, the peripheral portion of the bare disk and the tip of the disk holder 35 can be brought into contact with each other. When the bare disk is placed in the first position, and when the bare disk type recording medium is installed in a vertical position, the peripheral edge of the bare disk contacts the tip of the disk holder 35 and the mounting surface A disc holder 35 is disposed at a second position for supporting the peripheral portion of the bare disk between the holding portion 31 and the holding portion 351 provided at the tip of the bare disk so as to face the mounting surface 31. The disc holder 35 is rotatable between the first position and the second position. Therefore, the switching can be performed only by rotating the disk holder 35 in the case of the vertical setting and the horizontal setting, and the positioning of the bare disk can be surely performed, so that the structure and the operability are extremely simplified.

(10) Since the slider 33 is provided on the tray 30 to urge the recording medium toward the disk holder 35 and position the recording medium, when the cartridge-type recording medium is placed on the placement surface 31, The positioning of the cartridge can be performed, and the displacement of the cartridge from the mounting surface 31 can be prevented.

[0050] (11) Since the first guide mechanism 151A is provided inside each of both sides of the frame 10, it is possible to guide the swing of the base member 20 at these two places, and the base member 20 is moved to both sides. Can be suppressed.

[0051] (12) An engagement protrusion 311 is provided to project from the mounting surface 31 of the tray 30 to the upper surface side. Therefore, when a cartridge type recording medium is mounted, the engagement protrusion 311 is attached to the cartridge. The cartridge type recording medium can be positioned by engaging with the concave portion provided in the cartridge. Also, when the bare disk type recording medium is placed in the vertical position, it comes into contact with the engaging projections 311. Alternatively, by rotating the disc holder 35 closer to the disc holder 35, the disc holder 35 can be arranged at the second position, and the bare disc can be reliably positioned.

Further, the engagement protrusion may be provided on the base member 20.

[Modification of Embodiment]

It should be noted that the recording medium driving apparatus of the present invention is not limited to the above-described embodiment, and it is needless to say that various changes can be made without departing from the scope of the present invention. In the configuration, the first guide mechanism 151 A is located on the side of the disc table The force provided in the direction is not limited to this. For example, it may be further on the back side or on the front side than the position shown in the present embodiment. That is, the first guide mechanism 151A includes the linear portion of the oscillating trajectory force substantially at the center of the disk table 23 and passes through the engaging hole of the recording medium.

Further, in the present embodiment, the second guide hole 152 is a force provided by fixing the shaft support member 153 to the flat portion 154 of the side surface 15. The present invention is not limited to this. The shaft support member 153 may be formed in a single body. In this case, the flat portion 154 of the side surface portion 15 does not require the bearing protrusion 154A and the bearing hole 154B, and the screw for attaching the shaft support member 153 is not required, but the second shaft 22 of the base member 20 is connected to the second guide 22. The work of engaging with the hole 152 becomes difficult. Therefore, after the second shaft 22 can be housed inside and the second shaft 22 is engaged with the second guide hole 152, the second shaft 22 is fixed to the base member 20 or the like. Ingenuity is required.

In the present embodiment, the first guide mechanism 151A and the second guide mechanism 152A allow the base member 20 to escape to the front side when in the standby position, to escape to the capture position, and to escape to the rear side. The power is not limited to this. For example, the base member 20 escapes to the rear side when located at the standby position, and escapes to the front side when located at the capture position, and the substantially center of the disk table 23 is a straight line passing through the engagement hole of the recording medium. It may be ヽ. However, in this case, since the mounting portion 232 of the disc table 23 is inclined at the capture position, there is a possibility that a capture error may occur when the recording medium is mounted horizontally. In such a case, if the mounting surface 31 is inclined and the inclination angle of the mounting surface 31 of the tray 30 and the inclination angle of the mounting portion 232 of the disc table 23 are made substantially the same on the capture surface, Captive mistakes in which the disk table 23 does not contact the recording medium at an angle can be prevented.

Further, in the present embodiment, the first guide grooves 151 are provided on the both side surfaces 15, respectively. For example, it may be provided only on one side surface 15. However, in this case, since there is a possibility that the base member 20 may be inclined with respect to the capture surface, a draft member for separately making the base member 20 horizontal with respect to the capture surface is required. Therefore, in the present embodiment, the first guide is Preferably, a groove 151 is provided.

In the present embodiment, when the cartridge type recording medium is used, the detection pin 611 is provided as detection means for detecting the information of the cartridge information portion, but is not limited to this. For example, an infrared sensor or the like may be used as the detecting means.

Further, in the present embodiment, the detection board 60 on which the detection means is installed is fixed to the base member 20, and when the base member 20 swings and reaches the capture surface, the detection pins 611 of the tray 30 The force detecting means that penetrates the detection hole 34 may be provided on the tray 30. In this case, the detecting means is disposed on the lower surface side of the tray 30, and the detecting means may be always protruding from the detecting hole 34. The tray 30 may be inserted into the frame 10 to detect the force. May be operated.

In the present embodiment, the disc holder 35 is a force provided at the rising portion 32 at the front end of the tray 30. The present invention is not limited to this. For example, it may be provided at the two rising portions on one side, may be provided on both sides, or may be provided on the back side. Further, the number of disk holders 35 is also two in this embodiment, and is not limited to 1S. For example, if four disk holders are provided, two disk holders 35 are provided on the rising part 32 on the front side and two disk holders 35 are also provided from the back side. However, the recording medium can be positioned only by these disk holders 35.

In the present embodiment, the tray mounted recording medium driving device in which the recording medium is mounted on the tray 30 and the recording medium is inserted into the frame 10 together with the tray 30 has been described. However, the present invention is not limited to this. For example, a slot-in type recording medium driving device that inserts a recording medium directly into a frame may be used.

Further, in the present embodiment, the recording medium drive device 100 is capable of using both the cartridge type recording medium and the bare disk type recording medium, but is not limited thereto. For example, a recording medium driving device that can use only a cartridge type recording medium may be used, or a recording medium driving device that can use only a bare disk type recording medium may be used.

[Functions and Effects of the Embodiment] The recording medium driving device 100 includes a frame 10, a disk table 23 that captures a recording medium housed in the frame 10 and having an engagement hole at the center with a capture surface, and a base member 20 to which the disk table 23 is attached. The base member 20 is swingably attached to the frame 10, the swing locus substantially at the center of the disk table 23 is a straight line, and the engaging hole of the recording medium is located on this locus. Guide mechanism for guiding the vehicle. As a result, the recording medium can be reliably captured even if the capture position of the disk 91 changes without causing the disk table 23 to be decentered. Therefore, a capture error can be avoided, and the recording medium driving device 100 can improve the recording and Z or reproduction accuracy.

Industrial applicability

INDUSTRIAL APPLICABILITY The present invention can be used as a recording medium driving device that captures a recording medium on a capture surface and performs at least reproduction or recording.

Claims

The scope of the claims

[1] a frame,

A disk table for capturing, by a capture surface, a recording medium housed in the frame and having an engagement hole at the center, a base member to which the disk table is attached;

A recording medium driving device that reproduces or records information on at least the recording medium,

The base member is swingably attached to the frame,

A recording medium driving device, characterized by having a guide mechanism that guides the swing trajectory substantially at the center of the disk table to be a straight line and guides the engagement hole of the recording medium to be located on the trajectory.

[2] a frame on which a first guide and a second guide are formed, a base member on which a first shaft and a second shaft that engage with the first guide and the second guide are formed, A disk table mounted on the base member and capturing the recording medium on the capture surface, and at least reproducing or recording information on the recording medium,

The first axis moves along the first guide by the base member swinging about the second axis,

The recording medium driving device, wherein the second axis moves along the second guide as the first axis moves along the first guide.

[3] The recording medium drive according to claim 2, wherein

At least a portion of the first guide is formed on the frame such that a swing locus substantially at the center of the disk table is a straight line.

[4] The recording medium driving device according to claim 2 or 3,

The recording medium driving device, wherein the first axis and the second axis move in directions different from each other.

[5] The recording medium drive according to any one of claims 2 to 4, wherein The first axis and the second axis project from the side surface of the base member toward the frame,

The recording medium driving device, wherein the first guide and the second guide are guide grooves provided on an inner surface of the frame.