WO2007043611A1

WO2007043611A1 - Diameter dimension discriminating apparatus and disc device

Info

Publication number: WO2007043611A1
Application number: PCT/JP2006/320382
Authority: WO
Inventors: Yoshihiro Ichikawa; Eiji Hoshinaka; Yosuke Amitani
Original assignee: Pioneer Corporation
Priority date: 2005-10-12
Filing date: 2006-10-12
Publication date: 2007-04-19

Abstract

A disc device (100) is provided with a guide lever (411) for guiding an optical disc into a status where the optical disc is clamped by a turntable (23); an 8cm arm (414) for urging the optical disc clamped by the turntable (23) in an ejecting direction; and an arm position detecting switch (46) for detecting a stop position of the 8cm arm (414) when the optical disc is clamped by the turntable (23). Thus, the diameter dimension of the optical disc clamped by the turntable (23) can be discriminated only by recognizing the stop position of the 8cm arm (414) detected by the arm position detecting switch (46). Therefore, the diameter dimension of the optical disc can be discriminated by a simple constitution compared with conventional constitutions wherein the diameter dimension is discriminated by controlling the operation of a plurality of constitutions such as a spindle motor and a timer.

Description

Specification

Diameter dimension discriminating device and disk device

Technical field

TECHNICAL FIELD [0001] The present invention relates to a diameter dimension discriminating apparatus that discriminates the diameter dimension of a disc-shaped recording medium held by a turntable, and a disc apparatus.

Background art

Conventionally, in a configuration capable of reading information recorded on a disc-shaped recording medium having different diameters, a configuration for determining the diameter of a recording medium from which this information is read is known (for example, (See Patent Document 1).

[0003] The one described in Patent Document 1 describes that the gain of the spindle servo circuit amplifier is 12 cmCD.

Set (Compact Disc) to a rotatable gain and turn the servo on. Furthermore, the CD is rotated at the same rotation speed regardless of the disk diameter, and when the subcode synchronization signal is detected, the servo is turned off and the acceleration of the spindle motor is started by the acceleration pulse. Then, the timer is started, and when the next subcode synchronization signal is detected, the timer is stopped and the servo is turned on again. Thereafter, when the timer value is longer than the reference time, it is determined that CD is 12 cmCD, and the gain of the amplifier is set to a gain for 12 cmCD. On the other hand, when the timer value is shorter than the reference time, it is determined that the CD is 8 cmCD, and the gain for 8 cmCD is set.

[0004] Patent Document 1: Japanese Patent Laid-Open No. 9128877 (Page 3, left column, page 6, left column)

Disclosure of the invention

Problems to be solved by the invention

However, in the configuration as described in Patent Document 1 as described above, the diameter of the disc-shaped recording medium is determined by controlling the operation of a plurality of components such as a spindle motor and a timer. An example is the problem that the configuration for performing processing may become complicated.

In view of such circumstances, an object of the present invention is to provide a diameter dimension discriminating apparatus capable of discriminating the diameter dimension of a disk-shaped recording medium held by a turntable with a simple configuration, and It is to provide a disk device.

Means for solving the problem

[0007] The diameter / dimension discriminating apparatus of the present invention is a diameter / dimension discriminating apparatus for discriminating the diameter / size of a disk-shaped recording medium held by a turntable provided in the apparatus main body, and is conveyed to the apparatus main body. A guide member that is provided so as to be able to advance and retreat in a direction intersecting with the conveyance path of the recording medium, and that guides the recording medium to be held by the turntable while being in contact with a peripheral edge of the recording medium; An unloading direction biasing member which is provided so as to be able to advance and retreat in a predetermined direction corresponding to the transporting state of the recording medium and biases the recording medium held by the turntable in a direction of unloading from the apparatus main body. A stop position for detecting a stop position of at least one of the guide member and the unloading direction biasing member when the recording medium having the diameter is held by the turntable. And detecting means.

[0008] The disk device of the present invention is a turntable for holding a disk-shaped recording medium, and at least one of writing information to the recording medium held by the turntable and reading information from the recording medium. An information processing unit that performs the above, a diameter / dimension determination device according to the present invention that determines a diameter / size of the recording medium held by the turntable, the turntable, the information processing unit, and the diameter And a device main body having an opening for receiving and inserting the recording medium.

Brief Description of Drawings

FIG. 1 is a plan view showing the inside of an apparatus main body of a disk apparatus according to an embodiment of the present invention.

FIG. 2 is a partially enlarged view showing an outline of the vicinity of an arm position detection switch in the embodiment.

FIG. 3 is a partially enlarged view schematically showing the vicinity of a clamp detection switch in the embodiment.

FIG. 4 is a partially enlarged view showing a state in the vicinity of an arm position detection switch when a large-diameter disk is inserted in the embodiment. FIG. 5 is a plan view showing the inside of the main body of the disk device when the disk insertion is completed when a large-diameter disk is inserted in the embodiment.

FIG. 6 is a plan view showing the inside of the main body of the disk device when the large-diameter disk is clamped in the embodiment.

FIG. 7 is a partially enlarged view showing a state in the vicinity of an arm position detection switch when a small-diameter disk is inserted in the embodiment.

FIG. 8 is a plan view showing the inside of the main body of the disk device when the disk insertion is completed when a small-diameter disk is inserted in the embodiment.

FIG. 9 is a plan view showing the inside of the main body of the disk device when the small-diameter disk is clamped in the embodiment.

Explanation of symbols

1 ... Optical disc as recording medium

1 A: Large-diameter disc as a recording medium

1B ... Small diameter disc as a recording medium

10 ... Main body

11 ··· Slots that are openings

23 ... Turntable

24… Information processing department

46 ··· Arm position detection switch as stop position detection means constituting the radial dimension discriminating device

46A: Switch base as detection means base

46Β · 'Advancing and retracting members as moving members

47 ... Clamp detection switch as holding detection means

100 ... disk unit

411 ·· -Guide lever as a guide member constituting the diameter dimension discriminating device

414… 8cm arm as a carry-out direction urging member that constitutes the diameter dimension discriminating device

414Ε ··· Contact member

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a plan view schematically showing the inside of a disk device according to an embodiment of the present invention. FIG. 2 is a partially enlarged view showing an outline of the vicinity of the arm position detection switch. FIG. 3 is a partially enlarged view showing an outline of the vicinity of the clamp detection switch.

[0012] [Disk device configuration]

In FIG. 1, 100 is a disk device according to an embodiment of the present invention, and this disk device 100 is an optical disk 1 as a disk-shaped recording medium as a disk-shaped recording medium that is detachably mounted. Are read processing that is information processing for reading information recorded on a recording surface (not shown) provided on at least one surface, and recording processing that is information processing for recording various information on the recording surface. The disk device 100 is a power that is exemplified by a so-called thin slot-in type that is mounted on an electric device such as a portable personal computer. For example, the disk device 100 performs processing for recording and reproduction such as recording of game machines and video data. A single unit such as a playback device may be used. Further, the disk device 100 can store a large-diameter disk 1A having a diameter of 12 cm and a small-diameter disk 1B having a diameter of 8 cm as the optical disk 1. The disc-shaped recording medium is not limited to the optical disc 1, but can be a disc-shaped recording medium having a discrepancy between! / ヽ, such as a magnetic disc and a magneto-optical disc. The disc device 100 includes a substantially box-shaped device body 10 made of, for example, metal and having an internal space. In this apparatus main body 10, the lower side in FIG. 1 is the front 10A of the apparatus main body, the left side wall of the apparatus main body 10 in FIG. 1 is the left wall 10B, the right side wall of the apparatus main body 10 in FIG. The side opposite to the front surface 10A of the apparatus body 10 is appropriately referred to as a back surface 10D.

[0013] Inside the apparatus body 10, there are provided a disk processing section 20 called a so-called traverse mechanism, a transport means 30 for transporting the optical disk 1, and a control circuit section (not shown) as a circuit board. It has been. A slot 11 as an opening for inserting and discharging the optical disk 1 is formed in the front surface 10A of the apparatus body 10 so as to extend in the left-right direction in FIG.

[0014] The disk processing unit 20 includes a pedestal portion 21 that is formed in a substantially plate shape by, for example, a metal plate and is supported on the apparatus main body 10 so that one end thereof is swingable. The pedestal portion 21 is formed in a longitudinal direction from the front surface 10A side of the left wall 10B of the apparatus body 10 toward the center position. Also pedestal In the portion 21, a longitudinal processing opening 21A is cut out substantially in the center along the longitudinal direction. The disk rotation driving means 22 is disposed at one end of the processing opening 21A of the pedestal 21, that is, at a substantially central position of the apparatus main body 10. The disk rotation driving means 22 includes a spindle motor (not shown) and a turntable 23 provided integrally with the output shaft of the spindle motor. The spindle motor is connected to the control circuit section so as to be controllable, and is driven by electric power supplied from the control circuit section. The turntable 23 is a drive unit that is provided at a substantially central portion inside the apparatus main body 10 and that rotationally drives the optical disc 1.

In addition, an information processing unit 24 is disposed on the pedestal unit 21. The information processing unit 24 is supported so as to be bridged between the pair of guide shafts 25, and is closely spaced from the turntable 23 in the processing opening 21A by a moving mechanism (not shown). The information processing unit 24 includes a pickup having a light source (not shown), a pickup lens 24A for converging light from the light source, and an optical sensor (not shown) for detecting emitted light reflected by the optical disk 1.

The conveyance means 30 includes a conveyance motor 31 that is disposed in the apparatus main body 10 and that is controlled in operation by, for example, a control circuit unit, and a link mechanism unit 32 that is linked by driving the conveyance motor 31.

The link mechanism section 32 includes a disk guide mechanism 41 as a transport device provided inside the apparatus main body 10 on the left wall 10B side of the slot 11, and a slot 11 1 inside the apparatus main body 10 and the slot 11 1. Disk diameter detection mechanism 42 provided on the right wall 10C side of the disk, a disk discharge mechanism 43 for discharging the optical disk 1 disposed on the turntable 23, a first drive cam 44 for swinging the pedestal 21, and And a second drive cam 45.

[0018] The disc guide mechanism 41 includes a guide lever 411 as a guide member that guides the conveyance of the optical disc 1 when it is inserted and ejected, a disc guide 412 connected to the front surface 10A of the guide lever 411, and a protective plate. A bridge plate 413 and an 8 cm arm 414 as a carry-out direction urging member provided rotatably on the bridge plate 413.

[0019] The guide lever 411 is a rod-like member formed in a longitudinal shape in the transport direction of the optical disc 1. The A guide portion 411 A made of synthetic resin for guiding the movement of the optical disc 1 in the transport direction is fixed to the side surface of the guide lever 411 on the inner side (side into which the optical disc 1 is inserted). . The guide portion 411A is formed with a guide groove that is concaved toward the left wall 10B, and guides the periphery of the optical disc 1 in sliding contact with the guide groove. The guide portion 411A is formed with a rotation restricting pin 411C that protrudes toward the bottom side. Further, the side surface of the guide lever 411 is formed in a shape curved by an inward force on the back surface 10D side following the guide portion 411A, and restricts the movement of the optical disc 1.

[0020] A guide pin 411B penetrating from the top surface side to the bottom surface side is fixed to an end of the guide lever 411 on the back surface 10D side. This guide pin 411B is locked to a bridge plate 413 and an 8 cm arm 414 described later. A disc guide 412 is rotatably connected to the front 10 A side end of the guide lever 411.

Furthermore, a leaf spring 4 11D is provided at the end on the front surface 10A side of the guide lever 411 so as to face the left wall 10B. The leaf spring 411D urges the connecting portion between the guide lever 411 and the disk guide 412 inward when the guide lever 411 moves toward the left wall 10B. This prevents the connecting portion of the guide lever 411 and the disk guide 412 from being refracted outward.

[0022] The disc guide 412 is formed in a longitudinal shape, and one end thereof is rotatably attached to the vicinity of the left wall 10B of the apparatus main body 10. Further, the other end of the disk guide 412 is rotatably connected to one end of the guide lever 411 as described above. As a result, the front 1 OA side end of the guide lever 411 can rotate on an arc whose center is one end of the disk guide 412 and whose length is the length of the disk guide 412. Further, a flange portion 412A protruding inward is formed on the bottom surface side of the disc guide 412. When the optical disc 1 is inserted along the flange portion 412A, the peripheral portion of the optical disc 1 is slidably contacted. The sliding contact surface 412B is formed. Further, the connecting portion between the disc guide 412 and the guide lever 411 is an extruding portion 412C that pushes the periphery of the optical disc 1 toward the front surface 10A when the optical disc 1 is ejected.

The bridge plate 413 is a plate-like member provided in the left-right direction on the back surface 10D side of the apparatus body 10. The bridge plate 413 covers the control circuit section described above. Provided to protect the control circuit portion. A guide guide groove 415 as a guide guide portion is formed on the left wall 1 OB side of the bridge plate 413 by force from the back 10D side corner portion of the apparatus body 10 toward the inner center position.

[0024] The guide guide groove 415 includes an arc groove 415A as a first guide portion formed in a shape substantially parallel to the rotation trajectory of the connection portion of the guide lever 411 and the disk guide 412 and the arc groove 415. A linear groove 415B as a second guide portion extending substantially along the conveying direction of the optical disc 1 continuously to A, and formed continuously to the linear groove 415B, and with respect to the linear groove 415B, An inclined groove 415C is provided as a second guide portion that is inclined in the direction of the center position of the apparatus body 10 by an angle. In the guide guide groove 415, a guide pin 411B protruding toward the bottom surface side of the guide lever 411 is locked to guide the movement of the guide lever 411. Here, the linear groove 415B is set so that the length of the perpendicular line extending from the turntable 23 onto the extension line of the linear groove 415B is substantially the same as the radius of the small-diameter disk 1B.

[0025] Further, on the right wall 10C side of the bridge plate 413, an 8 cm arm 414 is pivotally supported. Furthermore, an arc-shaped arm restricting groove 413A centering on the axial support position of the 8 cm arm 414 is formed in the center portion of the bridge plate 413 and the right wall 10C side, and the rotational range of the 8 cm arm 414 is increased. It is regulated.

[0026] And on the right wall 10C side of the bridge plate 413, an assist arm 431 of a disk discharge mechanism 43 described later is pivotally supported, and an arc-shaped assist regulation with the rotation center of the assist arm 431 as a center is provided. A groove 413B is formed. An eject arm 432 that engages with the assist arm 431 is pivotally supported at the substantial center of the bridge plate 413 so as to be rotatable. Further, a control groove 413C that is long in the left-right direction is formed on the front surface 10A side of the bridge plate 413.

Furthermore, a push arm 416 is rotatably supported between the bridge plate 413 and the guide lever 411 on the left wall 10B side of the bridge plate. The pusharm 416 is formed in a longitudinal shape, and a pin locking groove 416A is formed from one longitudinal end portion toward the shaft support position. In the pin locking groove 416A, when the guide pin 411B of the guide lever 411 moves in the circular arc groove 415A of the guide guide groove 415, the rotation formed in the guide portion 411A is performed. The movement regulation pin 411C is passed through. When the guide lever 411 further moves to the left wall 10B side and the pin locking groove 416A is pushed by the rotation restricting pin 411C, the push arm 416 rotates to the left wall 10B side. Further, on the right wall 10C side of the push arm 416, a pressing piece 416B protruding downward is formed. When the push arm 416 is rotated to the left wall 10B side, the presser piece 416B is restricted from rotating by the push stopper 424 D of a slide stopper 424, which will be described later. Hold lever 411 moved to the left wall 10B. In addition, a push arm biasing spring 416C is provided between the front end of the push arm 416 and the bridge plate 413. The push arm urging spring 416C urges the push arm 416 inward, that is, in the direction in which the left wall 10B force also separates.When the slide stopper 424 also releases the presser piece 416B, the push arm 416 is inward. Rotate.

[0028] As described above, the 8cm arm 414 is pivotally supported on the right wall 10C side of the bridge plate 413 so as to be rotatable about the rotation shaft 414D. Further, the 8 cm arm 414 includes an arm restricting pin 414A protruding to the bottom side, and the arm restricting pin 414A is locked to the arm restricting groove 413A of the bridge plate 413. Further, a guide link groove 414B formed along the length of the 8 cm arm is formed at the tip of the 8 cm arm 414. A guide pin 411B protruding to the top surface side of the guide lever 411 is engaged with the guide link groove 414B. A contact member 414E protruding inward is provided in the vicinity of the rotation shaft 414D of the 8 cm arm 414. As shown in FIG. 2, the contact member 414E includes a first projecting portion 414E1 projecting in a thin plate shape from the inner side to the distal end side of the 8cm arm 414, and the projecting distal end force of the first projecting portion 414E1. And a second projecting portion 41 4E2 projecting in a thin plate shape on the side. As shown in FIG. 1, the second protrusion 414E2 is provided with an arm biasing spring 414C that biases the left wall 10B side tip of the 8 cm arm toward the front surface 10A. The arm biasing spring 414C always biases the 8cm arm 414 counterclockwise. Then, the guide lever 411 is attached by the 8 cm arm 414 so that the guide pin 411B returns to the initial state located at the tip of the inclined groove 415C of the guide guide groove 415, that is, guides in the direction of ejecting the optical disc 1. It is energized.

[0029] Further, in the vicinity of the rotating shaft 414D in the control circuit section, a key as stop position detecting means is provided. A position detection switch 46 is provided. As shown in FIG. 2, the arm position detection switch 46 includes a switch base 46A as a thin square box-like detection means base, and a contact between a second protrusion 414E2 of the contact member 414E on one side of the switch base 46A. And a forward / backward member 46B as a moving member that advances / retreats by. The advancing / retracting member 46B is pushed by the contact of the contact member 414E when the large-diameter disk 1A is inserted and the 8cm arm 414 moves to a position close to the back surface 10D against the bias of the arm biasing spring 414C. Turns on (see Figure 4). Further, when the small-diameter disk 1B is inserted or when the optical disk 1 is not inserted and the 8 cm arm 414 is moved to a position away from the back surface 10D by the bias of the arm biasing spring 414C, the contact of the contact member 414E It is released from and is turned off without being pressed (see Figures 2 and 7). That is, the arm position detection switch 46 is set to the on state or the off state according to the stop position of the 8 cm arm 414. The guide lever 411, the 8cm arm 414, and the arm position detection switch 46 constitute the diameter dimension discriminating apparatus of the present invention.

[0030] As shown in FIG. 1, when the optical disk 1 inserted into the slot 11 is a large-diameter disk 1A, the disk diameter detection mechanism 42 cancels the movement restriction of the guide lever 411 of the disk guide mechanism 41, When the optical disc 1 is a small-diameter disc 1 B, the movement of the guide lever 411 is restricted.

Specifically, the disk diameter detection mechanism 42 includes a load arm 421 serving as a detection means whose one end abuts against the optical disc 1 and whose other end is rotatable to the apparatus body 10, and the load arm 421. The arm link mechanism 422 which is connected to the arm 421 and releases the restriction of the movement of the guide lever 411 when the rotation angle of the load arm 421 is large and restricts the movement of the guide lever 411 when the rotation angle of the load arm 421 is small. It is equipped with.

The load arm 421 is provided with a roller-like contact portion 421A that contacts the peripheral edge of the optical disc 1 at one end portion, and the other end portion is rotatably supported by the apparatus main body 10. The load arm 421 is formed of an elongated rectangular plate member, and a guide groove 421B is formed along the longitudinal direction thereof. Further, the load arm 421 is urged clockwise by urging means (not shown) so as to return to the initial position as shown in FIG.

[0033] The arm link mechanism 422 has a protrusion 423A guided in the guide groove 421B at the end. The substantially flat plate-like link arm 423, and the slide arm 423, which is a substantially flat plate-like restricting means connected to one end of the link arm 423, are provided.

[0034] The load arm 421 and the link arm 423 are on the right wall 10C side in the apparatus main body 10, and are in a plane substantially the same as the plane on which the guide lever 411 and the disc guide 412 of the disc guide mechanism 41 are arranged. Has been placed.

The link arm 423 is rotatably supported on the other end side with respect to the rotation shaft 423B fixed to the apparatus main body 10, and is positioned so as to face the protrusion 423A across the rotation shaft 423B. The engaging projection 423C is formed on the link arm 423. Further, an urging member (not shown) is provided at the end of the link arm 423 where the engaging protrusion 423C is provided, and urges toward the right wall 10C. As a result, the load arm 421 is biased inward, that is, clockwise.

[0036] The slide stopper 424 is disposed on the bottom surface side of the bridge plate 413 on the back surface 10D side from the turntable 23 so as to be movable in the left-right direction in the figure, and at the right end thereof, the engagement protrusion 423C is provided. An abutting contact portion 424A that abuts and inclines with respect to the transport direction of the optical disc 1 is formed. When the large-diameter disk 1A is inserted as the optical disk 1 and the load arm 421 is rotated, the link arm 423 is also rotated and the engaging protrusion 423C is moved to the front 1 OA side. Since the abutting inclined contact portion 424A is pushed, the slide stopper 424 slides to the right wall 10C side. Further, the slide stopper 424 is provided with a restriction stopper 424B capable of closing a part of the arm restriction groove 413A of the bridge plate 413. When the load arm 421 rotates as described above and the slide stopper 424 moves to the right wall 10C side, the restriction stopper 424B opens the arm restriction groove 413A and the arm restriction pin 414A of the 8cm arm 414 is movable. It becomes. On the other hand, when the load arm 421 returns to the initial position and the slide stock 424 returns to the initial position, the arm restricting groove 413A is closed and the arm restricting pin 414A cannot move. Thereby, the rotation of the guide lever 411 connected to the 8 cm arm 414 is also restricted. As a result, the guide lever 411 can also move to the left wall 10B side.

In addition, a cam interlocking groove 424C that can be connected to the second drive cam 45 is formed on the front surface 10A side of the slide stock 424. As a result, when the second drive cam 45 moves, the slide cam The stopper 424 also moves in the left-right direction. A push stopper 424D is provided on the left wall 10B side of the slide stopper 424. This push stopper 424D is brought into contact with the presser piece 416B of the pusharm 416 when the slide stocko 424 moves to the left wall 10B side by the movement of the second drive cam 45, and the rotation of the push arm 416 is restricted. .

[0038] Further, at a substantially central position of the slide stopper 424, an dirt regulating window 424E is formed. The ejection regulating window 424E includes a large-diameter disc eject regulating groove 424E1 extending in the left-right direction and a small-diameter disc eject regulating groove 424E2. When the slide stopper 424 is moved to the left wall 10B side by the movement of the second drive cam 45 in the ejection restriction groove 424E1 for the large diameter disk and the ejection restriction groove 424E2 for the small diameter disk, an assist arm described later The 431 eject restriction pin 431 A is engaged, and the rotation of the assist arm 431 is restricted. In addition, these large-diameter disc ejection regulating grooves 424E1 and small-diameter disc ejection regulating grooves 424E2 are formed so that the end portions are inclined in a direction away from the turntable 23, and the ejection regulating pin 431 A force this inclination. By being engaged with each other, a clearance can be secured between the eject arm 432 and the optical disc 1.

The disc ejection mechanism 43 is a mechanism for ejecting the optical disc 1 by pushing it into the slot 11.

The disc ejection mechanism 43 includes an assist arm 431 and an eject arm 432.

[0040] As described above, the assist arm 431 is provided on the right side wall 10C side of the bridge plate 413 with the pivot restriction pin 431A engaged with the assist restriction groove 413B. Thereby, the rotation range of the assist arm 431 is regulated in the assist regulation groove 413B. Further, as described above, the ejection regulating pin 431 A is passed through the ejection regulating window 424 E, and the slide stock 424 is moved to eject the large-diameter disc ejection regulating groove 424E1 or the small-diameter disc ejection regulating. Engagement with the groove 424E2 restricts the rotation of the cash boom 431. Further, a gear 431B is formed at one end of the assist arm 431 on the left wall 10B side. The assist arm 431 is urged counterclockwise by an urging member (not shown), that is, the gear 431B is urged toward the front 10A. [0041] As described above, the eject arm 432 is rotatably provided on the bridge plate 413, and is located on the top surface side of the bridge plate 413 and the gear portion 432A located on the bottom surface side across the bridge plate 413. A longitudinal arm portion 432B. The gear portion 432A meshes with the gear 431B of the assist arm 431, and is urged clockwise by the urging force of the assist arm 431. By this urging force, the arm portion 432B is urged in the clockwise direction, that is, in the direction of pushing the optical disc 1 into the slot 11. In addition, a roller-shaped contact portion 432C that contacts the periphery of the optical disc 1 is provided at the tip of the arm portion 432B. Further, an arm control protrusion 432D is formed on the opposite side of the pivot center of the eject arm 432 from the arm portion 432B. This arm control protrusion 432D contacts the side edge of the 8 cm arm 414 when the eject arm 432 rotates.

[0042] The first drive cam 44 and the second drive cam 45 are respectively formed with engagement grooves, and the engagement cam protrusions formed on the two side surfaces of the pedestal 21 in these engagement grooves. (Not shown) are respectively engaged. The first drive cam 44 and the second drive cam 45 are formed in a substantially long shape, and are advanced and retracted along the longitudinal direction by a motor and a gear mechanism (not shown). Thus, the pedestal 21 is swung so as to be close to and away from the recording surface of the optical disc 1 mounted on the turntable 23.

[0043] The link arm 423, the first drive cam 44, and the lever reduce the feed amount of the optical disc 1 sent to the turntable 23 when the optical disc 1 is a large-diameter disc 1A, and the optical disc 1 becomes a small-diameter disc 1B. In this case, a disc feeding cam portion 51 is provided to increase the feeding amount of the optical disc 1 to be sent to the turntable 23.

The disc feeding cam portion 51 includes a protrusion 52 provided on the link arm 423, and a cam groove 53 that is engaged with the protrusion 52 and formed in the first drive cam 44. Yes.

[0045] The cam groove 53 includes a first cam groove 53A for feeding the large-diameter disk 1A, a second cam groove 53B for feeding the small-diameter disk 1B, and the first cam groove 53A and the second cam groove. And a common cam groove 53C joined at one end with 53B. The first cam groove 53A and the second cam groove 53B are formed to extend in the moving direction of the first drive cam 44, respectively.

[0046] The second drive cam 45 is connected to the first drive cam 44, and moves forward and backward in the left-right direction in conjunction with the forward and backward movement of the first drive cam 44. The first drive of this second drive cam 45 On the cam 44 side, as shown in FIG. 3, there is provided a force projection 45A that projects in a rectangular shape in plan view in the direction of the back surface 10D. Then, when a sensor (not shown) detects that the center of the optical disk 1 is located on the turntable 23, the first drive cam 44 moves to the rear surface 10D side, and the second drive cam 45 moves to the left wall 10B side. Move to. Due to the movement of the second drive cam 45, the pedestal portion 21 comes close to the recording surface of the optical disc 1, and the optical disc 1 is clamped with respect to the turntable 23. In this state, the turntable 23 rotates and information is recorded and Z or reproduced on the optical disc 1.

Furthermore, as shown in FIGS. 1 and 3, a clamp detection switch 47 as a holding detection unit is provided in the vicinity of the second drive cam 45 in the control circuit unit. The clamp detection switch 47 includes a thin square box-like switch base 47A, and an advance / retreat member 47B that advances and retreats by contact of the cam projection 45A of the second drive cam 45 on one side surface of the switch base 47A. The As shown by the imaginary line in FIG. 3, the advancing / retracting member 47B is pushed on by the contact of the cam protrusion 45A when the second drive cam 45 moves to the left wall 10B side and the optical disc 1 is clamped. It becomes a state. Also, as shown by the solid line in FIG. 3, when the second drive cam 45 moves to the right wall 10C side and the clamp of the optical disk 1 is released, the contact force of the cam protrusion 45A is also released and not pushed. Turns off.

The control circuit unit appropriately controls the operation of the disk device 100 as described above. Further, when the eject detection button is pressed while the clamp detection switch 47 is on, that is, when the optical disc 1 is clamped, the control circuit section recognizes the on-state of the arm position detection switch 46. When it is recognized that the arm position detection switch 46 is in the ON state, it is determined that the large-diameter disk 1A is clamped, and the operation of each member is controlled so that the large-diameter disk 1A is ejected. Further, when it is recognized that the arm position detection switch 46 is in the OFF state, it is determined that the small-diameter disk 1B is clamped, and the operation of each member is controlled so that the small-diameter disk 1B is ejected.

[Operation of Disk Device]

Next, the operation of the disk device 100 will be described with reference to FIGS. FIG. 4 is a partially enlarged view showing a state in the vicinity of the arm position detection switch when a large-diameter disk is inserted. Figure 5 shows the completed disc insertion with a large disc inserted It is a top view which shows the inside of the apparatus main body of the disk apparatus in FIG. FIG. 6 is a plan view showing the inside of the main body of the disk device when the large-diameter disk is clamped. FIG. 7 is a partially enlarged view showing a state in the vicinity of the arm position detection switch when a small-diameter disk is inserted. FIG. 8 is a plan view showing the inside of the main body of the disk device when the disk insertion is completed when a small-diameter disk is inserted. FIG. 9 is a plan view showing the inside of the main body of the disk device when the small-diameter disk is clamped.

[0050] (Detection of large disk)

The operation of the disk device when detecting a clamp of a large-diameter disk 1A having a disk diameter of 12 cm inserted in the disk device 100 in the initial state as shown in FIG. When the large-diameter disk 1A is inserted from the slot 11 of the disk device 100 in the initial state, the peripheral portion of the large-diameter disk 1A pushes the contact portion 421A of the load arm 421 toward the right wall 10C and rotates it. As a result, the link arm 423 rotates counterclockwise, and the slide stock 424 slides to the right wall 10C side. By this movement of the slide stopper 424, the restriction stopper 424B is disengaged from the arm restriction groove 413A of the bridge plate 413, and the control of the rotation range of the 8cm arm 414 is released.

[0051] In this state, when the large-diameter disc 1A is further pushed in, the side edge of the large-diameter disc 1A comes into contact with the sliding contact surface 412B of the disc guide 412, and the disc guide 412 is moved to the left wall 1OB side. Turn. At this time, the guide lever 411 is also pushed into the back surface 10D side, and the guide pin 411B moves from the inclined groove 415C and the linear groove 415B of the guide guide groove 415 to the arc groove 415A. Then, the guide pin 411B moves to the left wall 10B side along the circular groove 415A, so that the guide lever 411 is maintained in a state substantially parallel to the conveying direction of the large-diameter disk 1A while maintaining the left wall 10B. The guide part 411 A guides the peripheral part of the large-diameter disc 1 A. Further, the movement of the guide pin 411B causes the 8cm arm 414 to rotate in the direction approaching the back surface 10D. When the 8 cm arm 414 rotates, as shown by the solid line in FIG. 4, the contact member 414E pushes the advancing / retracting member 46B of the arm position detecting switch 46, and the arm position detecting switch 46 is turned on. At this time, the rotation restricting pin 411C of the guide portion 411A is engaged with the pin locking groove 416A of the pusharm 416, and the push arm 416 is also rotated to the left wall 10B side. [0052] After that, when more than half of the large-diameter disk 1A is inserted into the apparatus body 10, the load arm 421 is urged inward, that is, in the clockwise direction. Move along the periphery. Then, the load arm 421 pushes the large-diameter disk 1A into the rear 10D side by the biasing force. Furthermore, when more than half of the large-diameter disc 1 A passes through the connecting part of the guide lever 411 and disc guide 412, the leaf spring 411D is biased inward so that the front 10A side protrudes inward. In addition, the guide lever 4 11 is inclined to guide the large-diameter disc 1 A to the back.

As shown in FIG. 5, when the central force of the large-diameter disk 1 A is moved onto the turntable 23, the disk loading is completed. Then, as shown in FIG. 6, the large-diameter disk 1A is clamped to the turn table 23. For this purpose, an insertion detection switch (not shown) is pushed by inserting the large-diameter disc 1A, and the first drive cam 44 moves to the front 10A side. At this time, the protrusion 52 is inserted into the first cam groove 53A of the first drive cam 44, and the position of the load arm 421 is fixed in a state where a clearance is provided between the protrusion 52 and the large-diameter disk 1A. Further, in conjunction with the movement of the first drive cam 44, the second drive cam 45 also moves to the left wall 10B side. Then, the first drive cam 44 and the second drive cam 45 move the pedestal 21 to the top surface side, and the large-diameter disk 1 A force is clamped.

[0054] Further, when the second drive cam 45 moves to the left wall 10B side, the slide stopper 424 moves to the left wall 10B side, and the push stopper 424D comes into contact with the pressing piece 416B of the push arm 416. . As a result, the guide lever 411 is pressed against the left wall 10B, and a clearance of a predetermined dimension is provided between the guide lever 411 and the large diameter disk 1A. Further, by the movement of the slide stopper 424, the eject restricting pin 431A of the assist arm 431 is engaged with the eject restricting groove 424E1 for the large-diameter disc, and the abutting portion 432C of the eject arm 432 has a predetermined size between the large-diameter disc 1A. Movement is restricted with the clearance provided. Further, when the second drive cam 45 moves to the left wall 10B side, the cam protrusion 45A pushes the advancing / retracting member 47B of the clamp detection switch 47 and the clamp detection switch 47 is turned on as shown by the imaginary line in FIG. Switch to a state. Then, the control circuit section recognizes the ON state of the arm position detection switch 46 and the ON state of the clamp detection switch 47, and detects that the large-diameter disk 1A force S has been clamped. [0055] After this, when the operator presses the eject button, for example, the disk device 100 causes the large-diameter disk 1 A to be turned on and off by the arm position detection switch 46 and the clamp detection switch 47 in the control circuit section. Since it is judged that the force S is clamped, the discharge process of the large-diameter disk 1A is started immediately.

[0056] (Detection of small diameter disk)

Next, the operation of the disk device when detecting the clamp of the small-diameter disk IB having a disk diameter of 8 cm inserted into the disk apparatus 100 in the initial state as shown in FIG. When the small-diameter disc 1B is inserted from the slot 11 of the disc device 100 in the initial state, the peripheral portion of the small-diameter disc 1B pushes the disc guide 412 and rotates it toward the left wall 1OB side. At this time, the guide lever 411 is also pushed into the rear surface 10D side, and the guide pin 411B moves from the inclined groove 415C of the guide guide groove 415 to the linear groove 415B. When the right end of the small-diameter disc 1B is inserted to the rear surface 10D side of the contact portion 421A of the load arm 421, the load arm 421 rotates inward to push the small-diameter disc 1B to the center position. . When the small-diameter disk 1B is inserted from a position shifted toward the left wall 10B, the small-diameter disk 1B is guided and inserted to the center position along the sliding contact surface 412B of the disk guide 412.

[0057] When the right end portion of the small-diameter disc 1B moves to the back surface 10D side from the contact portion 421A of the load arm 421, the small-diameter disc 1B is sent out to the back surface 1 OD side by the urging force of the load arm 421. . At this time, since the guide pin 411 B is engaged with the straight groove 415B, the guide lever 411 has a distance from the guide portion 411 A of the guide lever 411 to the center position of the turntable 23. Are approximately the same. Therefore, the small-diameter disk 1B pushed in by the load arm 421 is conveyed above the turntable 23 along the guide portion 411A of the guide lever 411. At this time, since the guide lever 411 is located away from the left wall 10B, the 8cm arm 414 is located away from the back surface 10D force. Therefore, as shown by the solid line in FIG. 7, the contact member 414E is not pushed against the advance / retreat member 46B of the arm position detection switch 46, and the arm position detection switch 46 is maintained in the OFF state.

Then, as shown in FIG. 8, when the central force of the small-diameter disk 1B is transported onto the turntable 23, the disk loading is completed. Then, as shown in Figure 9, The small-diameter disc IB is clamped to the turntable 23. For this purpose, as with the clamp of the large-diameter disc 1A, an insertion detection switch (not shown) is pushed, and the base 21 is moved to the top surface side by the first drive cam 44 and the second drive cam 45, and the small-diameter Disc 1B is clamped.

[0059] As in the case of clamping the large-diameter disc 1A, the second drive cam 45 moves to the left wall 10B side, so that the slide stopper 424 moves to the left wall 10B side, and the assist arm 431 ejects. The restriction pin 431A is engaged with the small diameter disk ejection restriction groove 424E2. As a result, the movement of the abutting portion 432C of the eject arm 432 is restricted in a state in which a predetermined dimension of taralance is provided between the ejecting arm 432 and the small-diameter disc 1B. At this time, the arm control protrusion 432D of the eject arm 432 abuts on the side edge of the 8cm arm 414 and restricts the rotation of the 8cm arm. As a result, the movement of the guide lever 411 is restricted in a state where a clearance of a predetermined dimension is provided between the guide lever 411 and the small-diameter disk 1B. Further, when the second drive cam 45 moves to the left wall 10B side, the clamp detection switch 47 is turned on as in the case of clamping the large-diameter disk 1A. Then, the control circuit unit recognizes the OFF state of the arm position detection switch 46 and the ON state of the clamp detection switch 47, and detects that the small-diameter disk 1B has been clamped.

[0060] Thereafter, when the operator presses the eject button, for example, the disk device 100 causes the small-diameter disk 1B to be turned on by the arm position detection switch 46 and the clamp detection switch 47 in the control circuit section. Since it is determined that the disk is clamped, the discharge process of the small-diameter disk 1B is started immediately.

[Operational effects of the disk device]

As described above, in the above embodiment, the guide device 411 for guiding the optical disc 1 to be clamped by the turntable 23 while being in sliding contact with the peripheral edge of the optical disc 1 and the disc table 100 are clamped by the turntable 23. And an 8 cm arm 414 for urging the optical disc 1 in the direction in which it is ejected from the apparatus body 10. Further, an arm position detection switch 46 for detecting the stop position of the 8 cm arm 414 when the optical disk 1 is clamped by the turntable 23 is provided. Therefore, the diameter dimension of the optical disk 1 clamped on the turntable 23 can be determined only by recognizing the stop position of the 8 cm arm 414 detected by the arm position detection switch 46. Therefore, spindle motor, timer etc. Compared with the conventional configuration in which the diameter dimension is determined by controlling the operations of the plurality of configurations, the diameter dimension of the optical disc 1 can be determined with a simple configuration.

[0062] Further, as the arm position detection switch 46, a configuration including a switch base 46A and an advance / retreat member 46B provided on the switch base 46A so as to be able to advance and retract is applied. The 8 cm arm 414 is provided with a contact member 414E that pushes the advancing / retracting member 46B to turn it on when it is positioned at the stop position when the large-diameter disk 1A force S is clamped. Therefore, the diameter of the optical disk 1 can be determined with a simple configuration that only recognizes the on / off state of the arm position detection switch 46.

[0063] Further, an 8cm arm 414 is provided so as to be rotatable about a rotation shaft 414D. A contact member 414E is provided in the vicinity of the rotation shaft 414D. For this reason, for example, when the 8 cm arm 414 is deformed due to environmental changes or radial changes, the contact member 414E is separated from the rotation shaft 414D in comparison with the configuration in which the rotation shaft 414D force on the 8 cm arm 414 is also provided at a separated position. The amount of displacement up to the distance can be minimized. That is, the amount of change in the contact state between the contact member 414E and the advance / retreat member 46B can be minimized. Therefore, the diameter dimension discrimination process can be performed with high accuracy.

[0064] Then, as in the above-described embodiment, the arm position detection switch 46, the guide lever 411, and the 8cm arm 414 are provided on the disk device 100 including the information processing unit 24 that processes information on the turntable 23 and the optical disk 1. By providing the disk device 100, the diameter of the optical disk 1 can be determined with a simple configuration.

Further, the disk device 100 is provided with a clamp detection switch 47 for detecting whether or not the optical disk 1 is clamped. Therefore, when the eject button is pressed while the optical disk 1 is clamped, the diameter dimension of the optical disk 1 is determined based on the on / off state of the arm position detection switch 46, and each state corresponding to the diameter dimension is determined. The movement of the member can be controlled immediately. Therefore, even if the user switches the optical disk 1 immediately after switching the power off and on, for example, the diameter dimension of the optical disk 1 based on the on / off state of the arm position detection switch 46 immediately after the power is turned on. And the discharge operation corresponding to the diameter can be started immediately.

[Modification of Embodiment] The present invention is not limited to the above-described embodiment, but includes the following modifications as long as the object of the present invention can be achieved.

[0067] That is, the force shown in the example in which the arm position detection switch 46 is provided at a position where the stop position of the 8 cm arm 414 when the large-diameter disk 1A is clamped can be detected. 411, disc guide 412, push arm 416, load arm 421, link arm 423, assist arm 431, and eject arm 432 may be provided at positions where the stop positions can be detected. Further, the above-described stop position of each member when the small-diameter disk 1B is clamped may be provided at a position where it can be detected.

[0068] In place of the arm position detection switch 46, an optical sensor may be provided! In such a configuration, it is possible to simplify the configuration in which it is not necessary to provide the contact member 414E on the 8cm arm 414.

[0069] Further, the arm position detection switch 46 may be provided at a position away from the rotational shaft 414D force. In such a configuration, the position where the arm position detection switch 46 is provided is not limited, and the arrangement positions of various members can be easily set.

Furthermore, the clamp detection switch 47 may be provided at a position where it is turned on / off by the slide stopper 424 when the optical disc 1 is inserted.

In addition, the specific structure for carrying out the present invention can be appropriately changed to other structures or the like as long as the object of the present invention can be achieved.

[Effect of the embodiment]

As described above, in the above-described embodiment, the guide lever 411 that guides the optical disc 1 to the state that is clamped by the turntable 23 and the optical disc 1 that is clamped by the turntable 23 are ejected to the disc device 100. An 8 cm arm 414 for energizing and an arm position detection switch 46 for detecting the stop position of the 8 cm arm 414 when the optical disk 1 is clamped by the turn table 23 are provided. Therefore, the diameter dimension of the optical disk 1 clamped on the turntable 23 can be determined only by recognizing the stop position of the 8 cm arm 414 detected by the arm position detection switch 46. Therefore, the diameter dimension of the optical disc 1 can be determined with a simpler configuration than the conventional configuration in which the diameter dimension is determined by controlling the operation of a plurality of components such as a spindle motor and a timer. Industrial applicability

INDUSTRIAL APPLICABILITY The present invention can be used for a diameter dimension discriminating apparatus that discriminates the diameter dimension of a disc-shaped recording medium held by a turntable, and a disc apparatus.

Claims

The scope of the claims

[1] A diameter / dimension discriminating apparatus for discriminating the diameter / size of a disk-shaped recording medium held by a turntable provided in an apparatus body,

A guide that is provided so as to be able to advance and retreat in a direction intersecting a conveyance path of the recording medium conveyed to the apparatus main body, and guides the recording medium to be held by the turntable while being in contact with a peripheral edge of the recording medium. A member,

An unloading direction biasing member provided to be able to advance and retreat in a predetermined direction corresponding to the conveyance state of the recording medium, and for biasing the recording medium held by the turntable in the direction of unloading the main body of the apparatus; ,

Stop position detecting means for detecting a stop position of at least one of the guide member and the carry-out direction biasing member when the recording medium having a specific diameter is held by the turntable;

A diameter dimension discriminating apparatus characterized by comprising:

[2] A diameter dimension determining apparatus according to claim 1,

The at least one member includes a contact member that can contact the stop position detecting means,

The stop position detecting means includes a moving member that can move when the contact member comes into contact with the detecting means base body that detects the stop position based on a moving state of the moving member.

A diameter dimension discriminating apparatus characterized by that.

[3] A diameter dimension determining device according to claim 2,

The at least one member is provided so as to be able to advance and retreat in the direction by rotating about a rotation axis.

The contact member is provided in the vicinity of the rotation shaft in the at least one member.

A diameter dimension discriminating apparatus characterized by that.

[4] a turntable for holding a disk-shaped recording medium;

Writing information to the recording medium held by the turntable and the recording 4. An information processing unit that performs at least one of reading of information from a recording medium; and a diameter dimension according to claim 1, wherein the diameter dimension of the recording medium held by the turntable is determined. A discrimination device;

An apparatus main body having an opening for accommodating the turntable, the information processing section, and the diameter dimension determining apparatus, and inserting and discharging the recording medium;

A disk apparatus comprising:

The disk device according to claim 4, wherein

Provided with a holding detection means provided in the apparatus main body for detecting whether or not the recording medium is held on the turntable.

A disk device characterized by that.