JP4692474B2 - Disk drive - Google Patents

Description

  The present invention relates to a recording medium driving apparatus, an electronic apparatus, and a carrier locking method for performing at least one of recording a signal on a disk-shaped recording medium using light and reproducing the recorded signal.

  There are so-called tray type and slot-in type optical disk drive devices (hereinafter sometimes simply referred to as drive devices). The tray type is a type in which a tray on which an optical disc (hereinafter sometimes simply referred to as a disc) is placed is movably provided in the main body of the drive device. The slot-in type is a type in which a slot for inserting and ejecting an optical disc is provided in the main body, and the user pushes the disc by hand through the slot when inserting the disc.

  In the tray type drive device, there is a device in which an elevating frame connected to a spindle motor and a pickup is arranged at the lower part of the tray in the main body so as to be movable up and down (see, for example, Patent Document 1). In the lifting frame, a spindle motor (and a disk table provided on the spindle motor) is disposed on the front end side (side into which the disk is inserted) of the drive device. A pickup is disposed in the vicinity of the disc table or on the rear end side opposite to the disc table. The elevating frame is configured such that the front end side is rotated by a cam disposed on the front end side of the elevating frame about a horizontal axis on the rear end side. The lifting frame is lifted by the cam in conjunction with the pulling operation of the tray, so that the disk table scoops up the disk and the chucking operation is performed. Therefore, in the drive device of Patent Document 1, the movement of the lifting frame is a movement that draws an arc-shaped trajectory at the disk table position on the front end side.

JP-A-11-238278 (paragraph [0008], FIG. 8 and FIG. 12)

  For example, in the case of a disc with a cartridge that accommodates the disc inside, the cartridge main body is placed on a tray, and the disc table accesses and chucks the disc through an opening provided in the cartridge main body. At this time, the disk is not in contact with anything in the cartridge body. When the disc with the cartridge is placed on the tray as described above, there is a concern that the disc contacts the cartridge body if the disc table and the tray are not accurately positioned.

  Further, in the conventional drive device, after the disk is chucked, the disk floats from the tray. That is, the disc is placed on the disc table and is not in contact with other portions. In this state, for example, when the spindle motor rotates at a high speed, vibration generated by the rotation is transmitted to the tray via the pickup unit, which may cause vibration of the tray (so-called chattering) and cause noise. It becomes. Further, in the case of a disc with a cartridge as described above, the disc may come into contact with the inner surface of the cartridge body due to vibration of the tray.

  In view of the circumstances as described above, an object of the present invention is to provide a recording medium driving device, an electronic device, and a method for locking a transport body that can position a transport body such as a disk tray with high accuracy.

  In order to achieve the above object, a recording medium driving apparatus according to the present invention includes a drive main body, a conveyance body on which a recording medium capable of recording a signal can be placed, and pulls out the conveyance body from the drive main body. In order to accommodate the transport body in the drive body, a loading mechanism for moving the transport body, a support member for supporting the recording medium, and the signal of the recording medium supported by the support member are recorded or reproduced. A base unit built in the drive main body, and a lock mechanism capable of locking the base unit and the transport body.

  In the present invention, since the base unit and the transport body are locked, the transport body is stationary with respect to the base unit, and the transport body can be positioned with high accuracy. As a result, for example, the disk cartridge placed on the transport body is also stationary with respect to the base unit, and the disk does not come into contact with the inner surface of the disk cartridge. Furthermore, it is possible to prevent the conveyance body from vibrating when the recording medium rotates at a high speed.

  According to an aspect of the present invention, the lock mechanism moves and locks the support member so as to approach the transport body according to the movement of the transport body. Accordingly, the transport body can be locked by utilizing the movement of the base unit according to the movement of the transport body by the loading mechanism. Therefore, a separate drive source for locking is not required, and the number of parts can be reduced. By reducing the number of parts, the rigidity of the movement of the locking mechanism is increased and manufacturing errors are reduced, so that a more accurate locking effect is exhibited.

  “According to the movement of the carrier” also includes the following meanings. For example, when the loading mechanism moves the transport body between the first position where the transport body is accommodated in the drive main body and the second position where the transport body is pulled out from the drive main body, the first In accordance with the movement between the position and the predetermined third position. That is, according to a part of the movement of the carrier.

  According to an aspect of the present invention, the lock mechanism includes an engaging portion that can be engaged with the transport body, and is connected to the holder that holds the base unit, and to the holder while being connected to the transport body. And a link member that is connected and converts the movement of the carrier to the movement of the holder. In the present invention, since the base unit substantially directly locks the conveyance body via the holder, it can be locked with higher accuracy.

  The present invention is intended to include that the base unit and the holder are not separate but integral.

  According to one aspect of the present invention, the holder has, as the engaging portion, a protrusion having a slope formed so as to face the transport body, and the transport body is fitted with the protrusion. It has an abutting part to abut. In the present invention, since the inclined surface is formed on the protrusion, the protrusion can be easily fitted to the contact portion, and is securely locked. Alternatively, the transport body may have a protrusion having a slope formed so as to face the holder, and the holder may have a contact portion provided so that the protrusion fits.

  According to an aspect of the present invention, the holder has a first protrusion and a second protrusion as the engaging portion, and the transport body has the first protrusion as the contact portion. A first abutting portion in contact with the second abutting portion with which the second protrusion abuts; and at least one of the first abutting portion and the second abutting portion. It has the convex part provided. If one of the first and second contact portions is provided, an error in the height of the first and second protrusions, or a dimensional error in the first and second contact portions, etc. Even if it exists, either one of the 1st and 2nd protrusion can contact a convex part, and it can lock reliably. Alternatively, for example, the same effect can be obtained even when convex portions having different heights are provided on the first and second contact portions, respectively.

  According to one form of this invention, the said holder has an edge part with the largest movement amount of this holder, and the said engaging part is arrange | positioned at the said edge part. Alternatively, the holder is a frame-like member placed around the support member of the base unit, and the engaging portions are arranged on both sides of the support member so as to be aligned with the support member.

  The electronic apparatus according to the present invention includes a main body, a transport body on which a recording medium capable of recording a signal can be placed, the transport body is pulled out from the drive main body, and the transport body is accommodated in the drive main body. Therefore, the drive body includes a loading mechanism for moving the transport body, a support member for supporting the recording medium, and a pickup for recording or reproducing the signal of the recording medium supported by the support member. A base unit built in the device, a lock mechanism capable of locking the base unit and the carrier, and a signal built in the main body for generating an electric signal for recording or reproducing the signal via the pickup And a generation circuit.

  In the carrier locking method according to the present invention, the carrier is moved to support the recording medium in order to accommodate in the drive body the carrier on which a recording medium capable of recording a signal can be placed. A support unit, a pickup for recording or reproducing the signal of the recording medium supported by the support member, a base unit built in the drive body, and the transport body that has moved into the drive body And lock.

  The shutter opening / closing mechanism according to the present invention has a front surface, a back surface opposite to the front surface, and a through hole that has a tapered portion that gradually narrows from the back surface to the front surface and penetrates from the front surface to the back surface. A base plate, a rack gear disposed on the front surface that engages with a shutter mechanism included in a cartridge main body that stores a recording medium capable of recording a signal, and the rear surface side protrudes from the rear surface side through the through hole. A hook having a shape along the tapered portion of the through hole and engaging with the shutter mechanism, and an elastic body attached to the base plate and pressing the hook from the back side. It has.

  In the present invention, since the hook has a shape along the tapered portion of the through hole, the hook can be positioned reliably. Therefore, it reliably engages with the shutter mechanism provided in the cartridge body.

  According to one form of this invention, the said elastic body is a leaf | plate spring. Thereby, the thickness of the shutter opening / closing device can be reduced in the thickness direction of the base plate.

  As described above, according to the present invention, the disk tray can be positioned with high accuracy.

Embodiments of the present invention will be described below with reference to the drawings. In the following description, the description will be roughly divided into the following subjects 1 to 5.
1. A base unit that works in conjunction with the movement (loading / unloading) of the disc tray,
2. Disc tray locking mechanism,
3. Disc clamper,
4). Disc cartridge holding mechanism,
5. Opening / closing mechanism of the shutter of the disk cartridge.

(1. Base unit linked with movement of disc tray)
FIG. 1 is a perspective view showing an optical disk drive device as a recording medium drive device according to an embodiment of the present invention.

  The optical disk drive apparatus 10 is an apparatus that performs at least one of recording a signal on a disk-shaped recording medium (hereinafter simply referred to as a disk) using light and reproducing the recorded signal.

  As a disc, CD (Compact Disc), DVD (Digital Versatile Disc), BD (Blu-ray Disc (registered trademark)), HD (High Definition) -DVD, disc using near-field light, disc using hologram , MO (Magneto Optical), or MD (Mini-Disk). In particular, a bare DVD, a bare BD, a bare disk that uses near-field light, a bare disk that uses a hologram, or the like may be accommodated in a cartridge. A configuration including the above is called a disk cartridge. As for the disk cartridge, the entire disk cartridge is called a recording medium.

  The recording medium driving apparatus is not limited to the optical disk drive apparatus, and an apparatus that drives a recording medium made of a solid-state memory can be considered. As the solid-state memory, for example, a recording medium such as a semiconductor memory, a dielectric memory, or a magnetic memory can be considered.

The optical disc drive apparatus 10 includes a drive main body 100 and a disc tray 200 as a carrier that is pulled out from the drive main body 100 and is accommodated by being drawn into the drive main body 100. FIG. 2 is a perspective view showing a state in which the disc tray 200 is pulled out from the drive main body 100. As shown in FIG. 1, to the drive body 100, the position of the disc tray 200 when the disc tray 200 Scheme 13 ml in the first position. Further, as shown in FIG. 2, the position of the disc tray 200 when the disc tray 200 is pulled out with respect to the drive main body 100 is a second position. The drive body 100 is often covered with a cover frame (not shown).

  As shown in FIG. 2, the disc tray 200 includes a front plate 205 provided at the front end portion and a placement portion 210 on which the disc is placed. The mounting unit 210 is provided with an opening 204 through which a base unit 170 (described later) on which a pickup 180 or the like is mounted accesses the disk.

  FIG. 3 is a cross-sectional view for explaining the mounting portion 210 of the disc tray 200. The placement unit 210 includes a first recess 211 for placing and positioning the disk cartridge 5, a second recess 212 for placing and positioning the disk D2 having a diameter of 12 cm, and a disk having an diameter of 8 cm. And a third recess 213 for placing and positioning D3. The first concave portion 211 is provided at the highest position, the second concave portion 212 is provided next, and the third concave portion 213 is provided at the lowest position.

  The disc cartridge 5 has a form as shown in FIG. The disc cartridge 5 includes a cartridge body 7 that accommodates a disc-like disc D1. A shutter (not shown) is provided on the back side of the cartridge body 7 (the side facing the mounting portion 210 of the disc tray 200). When the shutter is opened, the signal recording surface of the disc D1 and the opening of the disc tray 200 are opened. Face each other. As a result, the pickup 180 of the base unit 170 can access the signal recording surface of the disk D1.

  As shown in FIG. 1 and the like, the drive main body 100 includes a chassis 110 and a cover plate 300 attached to the upper portion of the chassis 110. FIG. 5 is a plan view showing the chassis 110 and the loading mechanism with the cover plate 300 removed. FIG. 5 shows a state in which the disc tray 200 is substantially detached from the drive main body 100 for easy understanding. In the following description, it is assumed that the upper side is the front side and the lower side is the rear side when viewed in FIG. FIG. 6 is a perspective view seen from the rear side of FIG. 5 (the disk tray 200 and the base unit 170 are not shown).

  FIG. 7 is a perspective view of the cover plate 300 including a cross section cut along a horizontal line in the Y direction. The cover plate 300 is provided with a holding plate 11 that holds the disc clamper 12. The holding plate 11 is formed to extend long in the Y direction, and a mounting spring 14 is provided at one end 11 a on the rear side of the holding plate 11. A plate member is constituted by the holding plate 11 and the mounting spring 14. The holding plate 11 is elastically mounted on the rear side of the cover plate 300 via the mounting spring 14 and substantially in the center in the X direction. The disc clamper 12 is a recording medium fixing mechanism having a function of fixing the disc, and is held by the other end 11 b on the front side of the holding plate 11. The disk clamper 12 is made of a magnetic material. The holding plate 11 is elastically movable with the one end 11a on the rear side as a fulcrum. As a result, when a disk table 171 (see FIG. 10), which will be described later, approaches the disk clamper 12, the disk clamper 12 is attracted to the disk table 171 by receiving the magnetic attraction force of the magnet built in the disk table 171. At this time, if the disk is supported by the disk table 171, the disk is fixed between the disk table 171 and the disk clamper 12.

  An opening 113 is provided at the front end (front end) of the chassis 110 so that the disc tray 200 can enter and exit. A dustproof member 114 is attached to the opening 113. The dustproof member 114 is a member for preventing dust and dust from entering the drive main body 100, and is made of, for example, a cushion material such as elastic sponge or rubber. The dustproof member 114 may be provided on the front plate 205 of the disc tray 200 instead of being provided in the opening 113 of the drive main body 100. Alternatively, the dustproof member 114 may be provided in both the opening 113 of the drive main body 100 and the front plate 205.

As shown in FIG. 5, a loading mechanism 150 for the disc tray 200 is disposed near the opening 113. The loading mechanism 150 ejects the disc tray 200 in the Y1 direction and pulls it in the Y2 direction. An opening 115 is provided substantially at the center of the chassis 110, and the base unit 170 is disposed in the opening 115. The front side of the chassis 110, the base unit drive kinematic mechanism 130 for vertically moving the base unit 170 in association with the loading mechanism 150 is arranged. A shutter opening / closing mechanism 500 (see FIG. 6) for opening / closing a shutter mechanism (not shown) of the disk cartridge 5 is mounted on one of the side plates 116 of the chassis 110 and on the front side thereof. In FIG. 5, the shutter opening / closing mechanism 500 is omitted.

  As shown in FIG. 5, the loading mechanism 150 includes a loading motor 151, a first pulley 153 provided on the output shaft of the loading motor 151, and a second pulley connected to the first pulley 153 via a belt 152. Of the first pulley 154, a gear 156 that meshes with a gear portion 155 provided coaxially with the second pulley 154, and a pinion 157 provided coaxially with the gear 156. The loading motor 151 may be a DC motor, for example, but may be another motor. Each member constituting the loading mechanism 150 or the arrangement thereof can be appropriately changed in design.

  FIG. 8 is a plan view showing the back side of the disc tray 200. At both left and right ends of the disc tray 200, linear grooves 209 formed in a linear shape are provided. The straight groove 209 is a groove into which a plurality of guide protrusions 117 (see FIG. 5) formed in the chassis 110 are fitted, and moves while being guided by the guide protrusions 117 when the disc tray 200 moves in the Y direction. In FIG. 8, a rack 208 connected to the pinion 157 of the loading mechanism 150 is formed on the opening 204 side of the right straight groove 209. Accordingly, the driving of the loading motor 151 rotates the pinion 157 via the first pulley 153, the second pulley 154, the gear 156, and the like, thereby moving the disc tray 200 in the Y direction. In the following description, the rotation of the loading motor 151 in the Y2 direction in which the disc tray 200 is pulled into the drive main body 100 is defined as normal rotation, and the reverse rotation is defined as reverse rotation.

  Further, a guide groove 230 is formed on the back side of the disc tray 200 to engage with a protrusion 135 of a link member 131 (see FIG. 5) described later. The guide groove 230 includes a linear portion 234 along the Y direction, an inclined bent portion 235 in the middle of the linear portion 234, and an inclined portion provided at an end on the front side and angled with respect to the linear portion 234. 236. FIG. 9 is an enlarged perspective view of the vicinity of the inclined portion 236 of the guide groove 230. Due to the inclined portion 236 of the guide groove 230, the link member 131 moves in a direction (X direction) perpendicular to the Y direction, which is the moving direction, according to the movement of the disc tray 200. The guide groove 230 of the disc tray 200 and the projection 135 of the link member 131 constitute a first cam structure. The operation of the first cam structure will be described later.

Referring to FIGS. 5 and 6, the base unit drive kinematic mechanism 130 includes a holder 140 for holding the base unit 170 is connected between the holder 140 and the disc tray 200, the holder 140 the movement of the disc tray 200 And a link member 131 that converts it into a vertical movement. The holder 140 is configured in a frame shape having, for example, three sides of a quadrangular shape, but is not limited to such a shape. For a detailed description of the base unit drive kinematic mechanism 130 will be described later.

  FIG. 10 is a perspective view showing a part of the base unit 170. FIG. 11 is a perspective view showing a part of the base unit 170 held by the holder 140. 5, 10, and 11, the base unit 170 includes a base frame 178, a damper 179 mounted at a predetermined position of the base frame 178, and a disk disposed on the front side in the base frame 178. The table 171, the spindle motor 172 that rotates the disk table, the pickup 180 that irradiates the disk with laser light and reads the signal by the reflected light, and moves the pickup 180 in the radial direction of the disk (the Y direction in FIG. 5). A thread mechanism 185 (see FIG. 5). The disk table 171 functions as a support member that supports the disk from below.

  The sled mechanism 185 includes a sled motor 177 (see FIG. 5) attached to the base frame 178, a ball screw 181 connected to the output shaft of the sled motor 177, and a moving base 174 on which an actuator 175 having an objective lens 176 is mounted. And a connecting member 189 connected between the ball screw 181 and the moving base 174, and a guide shaft 173 serving as a guide when the moving base 174 is moved in the Y direction.

  The configuration of each member of the base unit 170 is not limited to the configuration shown in FIGS. 10 and 11, and may be a known configuration or another configuration.

As shown in FIG. 11, the damper 179 is installed at, for example, four corners of the base frame 178, and the front side of the base frame 178 has two mounting portions of the holder 140 via the two dampers 179. 142 (see FIGS. 5 and 11). Two dampers (not shown) on the rear side of the base frame 178 are respectively mounted on mounting portions 112 provided on the chassis 110. Holder 140 has a rotational shaft 141 on the right and left sides of the rear side, by driving the base unit drive kinematic mechanism 130, and can rotate about the rotary shaft 141. As shown in FIGS. 12A and 12B, the holder 140 is rotated so that the disk table 171 approaches the disk tray 200 (direction A2) or moves away (direction A1). The unit 170 moves up and down. That is, the base unit 170 rotates around a straight line connecting the two rear dampers as a central axis. In the state shown in FIG. 12B, the disk is supported by the disk table 171. Note that FIG. 6 corresponds to the state of the holder 140 in FIG.

  13A and 13B are views corresponding to FIGS. 12A and 12B, respectively, and are perspective views seen from the back side of the disc tray 200. FIG.

  Further, as shown in FIGS. 11 to 13, the holder 140 has an engagement protrusion 143 that protrudes forward on the front side. For example, two engagement protrusions 143 are provided side by side in the horizontal direction (X direction), but may be one, or may be three or more. The engagement protrusion 143 engages with an engagement groove 136 (see also FIG. 15) provided in a link member 131 described later.

FIG. 14 is a perspective view showing the base unit 170 as seen from the back side of the disc tray 200. FIG. 14 shows a state where the holder 140 is in the raised position. FIG. 15 is a rear view showing the link member 131 of the base unit 170. As shown in FIG. 14, the link member 131 of the base unit drive kinematic mechanism 130 includes a horizontal plate 131a substantially parallel to the surface (X-Y plane) of the disc tray 200 moves, it vertically X- And a vertical plate 131b substantially parallel to the Z plane. That is, the shape of the link member 131 in the cross section along line AA in FIG. 15 is substantially L-shaped.

  5 and 14, the horizontal plate 131a of the link member 131 is disposed in the vicinity of the U-shaped portion 133 and the U-shaped portion 133, and engages with the guide groove 230 (see FIG. 9) of the disc tray 200. A projecting portion 135, a rack portion (connection mechanism) 134 that is formed on a part of the U-shaped portion 133 and can be engaged with the pinion 157, and a guide rail 132 that engages with a flange 111 provided on the chassis 110. And have. The guide rail 132 is provided, for example, on the back side or inside of the horizontal plate 131a. For example, two flanges 111 are provided integrally with the chassis 110, and two guide rails 132 are provided corresponding to the two flanges 111. With the first cam structure, the link member 131 moves in the horizontal right direction (X2 direction) along the guide rail 132 so as to be interlocked with the rotation of the pinion 157 by the positive rotation of the loading motor 151. Further, with the first cam structure, the link member 131 moves along the guide rail 132 in the horizontal left direction (X1 direction) in conjunction with the rotation of the pinion 157 due to the reverse rotation of the loading motor 151.

  Here, the rack part 134 of the link member 131 that engages with the pinion 157 is not necessarily required. This is because even without the rack portion 134, the first cam structure interlocks with the disc tray 200 as described above. However, the presence of the rack portion 134 allows the link member 131 to move with a part of the driving force of the loading motor 151. As a result, even if the connection portion between the link member 131 and the disk tray 200 has a weak structure, the link member 131 can be moved reliably.

  As shown in FIG. 15, the vertical plate 131 b of the link member 131 has an engagement groove 136. The engaging groove has 136, horizontal portions at both ends (upper horizontal portion 136a and lower horizontal portion 136b), and an inclined portion 136c therebetween. As described above, the engaging protrusion 143 of the holder 140 is engaged with the engaging groove 136, that is, the engaging groove 136 and the engaging protrusion 143 constitute a second cam structure. With this second cam structure, the holder 140 that moves in conjunction with the link member 131 can be moved up and down.

  Thus, the base unit 170 moves up and down as described above in accordance with the movement of the predetermined section of the disc tray 200 by the first and second cam structures.

  Here, the inclined portion 236 of the guide groove 230 shown in FIG. 9 will be described in detail. The inclined portion 236 is formed at a first angle with respect to the Y direction, which is the moving direction of the disc tray 200, and a first portion 231 for moving the base unit 170, and a first portion with respect to the Y direction. And a second portion 232 that accommodates the disc tray 200 to the last position while pressing the dust-proof member 114 (see FIG. 5) formed at a second angle that is steeper than the angle. The inclined portion 236 has a third portion 233 formed with a third angle that is steeper than the first angle and gentler than the second angle with respect to the Y direction.

  These first to third angles are parameters that determine the amount of movement of the disc tray 200 and can be set as appropriate.

  Next, a disk loading operation will be described. Regarding the unloading operation, the order of movement of each part during the loading operation is reversed.

  First, the loading operation will be described with reference to FIGS. Now, it is assumed that the disc tray 200 is pulled out from the drive main body 100 and the disc tray 200 is in the second position as shown in FIG. 16 and 17 show the state in which the link member 131 moves with respect to the disc tray 200 for easy understanding, but of course the disc tray actually moves.

  In FIG. 16, the position [1] of the link member 131 is a schematic diagram showing a state when the disc tray 200 is in the second position. The first cam structure constituted by the disc tray 200, the guide groove 230, and the projection 135 of the link member 131 has the link member 131 as shown in FIG. 20 when the disc tray 200 is in the second position. It is set to be located on the left side.

  When a disc is placed on the disc tray 200 and a loading button or the like (not shown) is pressed, the loading motor 151 starts driving in a normal direction. When the pinion 157 rotates by driving the loading motor 151, the disk tray 200 starts linear movement in the Y2 direction by the rack 208 of the disk tray 200. At this time, the rack portion 134 of the link member 131 is not engaged with the pinion 157.

  FIG. 18 is a diagram showing the position of the engaging protrusion 143 of the holder 140 in the engaging groove of the vertical plate of the link member 131 in the loading operation. In the position [1] in FIG. 16, the engaging protrusion 143 is located at the position 143A of the end of the lower horizontal portion 136b. Therefore, at this time, the holder 140, that is, the base unit 170 is located at the lowermost position (the state shown in FIG. 12A).

  When the loading motor 151 continues to rotate forward from the position [1] and the disc tray 200 further moves in the Y2 direction, the link member 131 is moved by the inclined bent portion 235 of the guide groove 230 of the disc tray 200. Move slightly to the right (position [2] in FIG. 16). As a result, the engagement between the rack portion 134 of the link member 131 and the pinion 157 is started. At this time, as shown in FIG. 18, the engaging protrusion 143 is at a position 143B slightly away from the end of the lower horizontal portion 136b, but not at the inclined portion 136c. Therefore, the base unit 170 is still in the lowest position.

  When the drive of the loading motor 151 continues to rotate forward, the disc tray 200 moves in the Y2 direction due to the relationship between the pinion 157 and the rack 208 of the disc tray 200. Further, the protrusion 135 of the link member 131 is located in the linear guide groove 230. At this time, the engagement protrusion 143 is not changed from the position 143B, and the base unit 170 is still in the lowest position. That is, the position of the link member 131 does not change between the position [2] and the position [3].

  The forward driving of the loading motor 151 further continues, the disc tray 200 further moves in the Y2 direction, and the protrusion 135 is positioned in the third portion 233 of the guide groove 230. Then, the link member 131 further moves in the X2 direction (see FIG. 20) (position [4] in FIG. 16). When the link member 131 moves, as shown in FIG. 18, the engaging protrusion 143 is at a position 143C below the inclined portion 136c and starts to move up the inclined portion 136c. That is, the base unit 170 starts to rise.

  The forward driving of the loading motor 151 further continues, the disc tray 200 further moves in the Y2 direction, and the protrusion 135 is positioned at the first portion 231 as shown in FIG. When the protrusion 135 is at a position near the first end of the first portion 231 (position [5] of the link member 131), for example, the disk placed on the disk tray 200 is an 8 cm bare disk. If there is, the disk table 171 scoops up and supports the center of the 8 cm bare disk D3 (see FIG. 19A). The position of the disc tray 200 at this time is defined as a third position. At this time, the engaging protrusion 143 is located at a position 143D as shown in FIG. As described above, the 8-cm bare disk D3 is placed in the lowest third recess 213 in the placement portion 210 of the disk tray 200.

  From the state in which the link member 131 is at the position [5], the forward driving of the loading motor 151 is further continued, the disc tray 200 is further moved in the Y2 direction, and the link member 131 is located at the position [6]. . That is, when the protrusion 135 is positioned, for example, near the center of the first portion 231 of the guide groove 230, the engagement protrusion 143 is positioned at the height indicated by the position 143E in FIG. Scoops up and supports the center of the 12 cm bare disk D2 (see FIG. 19B). As described above, the 12 cm bare disk D <b> 2 is placed in the second recess 212 in the placement portion of the disk tray 200.

  From the state in which the link member 131 is at the position [6], the forward driving of the loading motor 151 is further continued, and the disc tray 200 is further moved in the Y2 direction to be positioned at the first position. At this time, the link member 131 is located at the position [7]. That is, when the protrusion 135 is positioned, for example, near the last end of the first portion 231 of the guide groove 230, the engagement protrusion 143 is positioned at a height indicated by a position 143F in FIG. The table 171 scoops up and supports the center of the disk D1 accommodated in the disk cartridge 5 (see FIG. 19C). In this first position, the disc tray 200 is substantially accommodated in the drive main body 100. As described above, the disc D1 of the disc cartridge 5 is placed in the highest first recess 211 in the placement portion 210 of the disc tray 200. In the base unit 170, the height position is almost the highest (the state shown in FIG. 12B).

  Then, from the state in which the link member 131 is at the position [7], the forward rotation of the loading motor 151 further continues, and the disc tray 200 further moves in the Y2 direction. The link member 131 is positioned [8]. For example, the disc tray 200 is moved to the end of the second portion 232 while the projection 135 is positioned at the second portion 232 of the guide groove 230, and the dustproof member 114 having an elastic repulsion force is applied to the disc tray 200. The disk tray 200 is pulled into the drive main body 100 while being pressed. At this time, the engagement protrusion 143 is located at a position 143G of the upper horizontal portion 136a in FIG. 18, and the height position of the base unit 170 at this time is when the engagement protrusion 143 is at the position 143E (FIG. 12B The state shown in () is almost the same as or slightly changed. In order to press the dust-proof member 114 with as little power as possible and position the disc tray 200 at the first position, the second portion 232 has a steeper angle than the first portion 231.

  Here, the first position refers to the position of the disk tray 200 where the disk table 171 can support the disk of the disk cartridge 5 placed at the highest position on the disk tray 200 (the position of the link member 131). Is at the position [7]), and is the position of the disc tray 200 in the state where the disc tray 200 is almost fully drawn into the drive main body 100. Therefore, the first position does not need to be a position completely drawn into the disc tray 200 to the end.

  It is also conceivable that the second portion 232 of the guide groove 230 of the disc tray 200 is not provided. In this case, the first position is a position where the disk tray 200 is completely pulled into the drive main body 100.

  At the time of unloading, the pinion 157 rotates in the reverse direction from that at the loading time due to the reverse rotation of the loading motor. Due to the engagement of the pinion 157 and the rack 208 of the disc tray 200, the disc tray 200 starts to move in the Y1 direction. Further, the link member 131 is rotated in the X1 direction by the reverse rotation of the pinion 157 and the engagement of the projection 135 of the link member 131, the disc tray 200, and the inclined portion 236 of the guide groove 230. Move to. When the link member 131 moves in the X1 direction, the holder 140 is lowered and the base unit 170 is lowered. As a result, the disc is released from the disc table 171 and the disc is placed on the disc tray 200.

  When the loading motor continues to rotate in the reverse direction, the protrusion 135 of the link member 131 moves along the linear portion 234 of the guide groove 230, and the link member 131 is in a stationary state. However, during that time, the disc tray 200 further moves in the Y1 direction due to the engagement between the pinion 157 and the rack 208. When the disc tray 200 is pulled out from the drive main body 100 to the second position, the unloading operation ends.

  As described above, in the present embodiment, when the base unit 170 moves up and down, as shown in FIG. 21, the rear end is rotated as the shaft 170a (actually not shown damper). Therefore, the disk table 171 disposed on the front side of the base unit 170 moves so as to draw an arc. Moreover, the height positions of the various sizes of discs placed on the disc tray 200 are different. However, in the present embodiment, the protrusion 135 of the link member 131 moves the first portion 231 of the guide groove 230 of the disk tray 200, so that the disk tray 200 also matches the arcuate movement. It moves in the Y2 direction (see FIGS. 19A to 19C). That is, since the base unit 170 rotates according to the position of the disk tray 200, the disks D2 and D3 of different sizes and the disk D1 of the disk cartridge 5 can be reliably chucked at appropriate positions.

  In the present embodiment, the base unit driving mechanism 130 has a structure in which the link member 131 is directly connected to the disc tray 200 and the base unit 170 is rotated by the link member 131 and the holder 140. Therefore, the number of parts can be reduced as compared with the prior art. By reducing the number of parts, the rigidity of the movement of the base unit drive mechanism 130 is increased and manufacturing errors are reduced, so that more accurate chucking is possible.

  Note that the base unit 170 and the holder 140 may be integrated instead of separate. In that case, the engagement protrusion 143 should just be provided in a part of base unit 170 (for example, a part of base frame).

  In the present embodiment, the link member 131 is not a rotating member such as the pinion lever and the cam lever of Patent Document 1, but moves linearly. Therefore, the space required for the rotation can be reduced.

  Next, a base unit driving mechanism 130 and a disc tray 200 according to another embodiment of the present invention will be described. FIG. 22 is a rear view of the link member of the base unit driving mechanism 130. FIG. 22 corresponds to FIG. 15 in the above embodiment. FIG. 23 is an enlarged view of the vicinity of the inclined portion of the end portion of the guide groove of the disk tray corresponding to the link member 31 shown in FIG. FIG. 23 corresponds to FIG. 9 in the above embodiment. Descriptions of the same members and functions of the optical disk drive apparatus according to the embodiment shown in FIGS. 1 to 21 will be simplified or omitted, and different points will be mainly described.

  As shown in FIG. 22, the engagement groove 36 included in the vertical plate 31b of the link member 31 includes an upper horizontal portion 36a, a lower horizontal portion 36b, and an inclined portion 36c. The inclined portion 36c has a first portion 36c-1 having a gentle angle with respect to the upper horizontal portion 36a and the lower horizontal portion 36b, and a second portion 36c-2 having a steeper angle.

As shown in FIG. 23, the guide groove 630 of the disc tray 600 is composed of portions 632 and 633 having two angles with respect to the straight portion 634. These two parts 632 and 633 correspond to the second part 232 and the third part 233 shown in FIG. 9, and in the disc tray 600 according to the present embodiment, the first part 231 shown in FIG. There is no. Due to the absence of the first portion, the amount of movement of the link member 31 with respect to a certain amount of movement of the disc tray 600 is reduced. However, in order to increase the amount of movement of the base unit 170 even when the amount of movement of the link member 31 is small (in order to keep the same as in the above embodiment), the portion 632 suddenly moves relative to the straight portion 634 as shown in FIG. It is an angle. Since the total amount of movement of the link member 31 is substantially the same as in the above embodiment, the length d1 in the X direction of the inclined portion of the guide groove 630 is as shown in FIG. It is the same as the length d1 in the X direction shown in FIG.

  The height of each position 143A to 143G of the engagement protrusion 143 engaged with the engagement groove 36 of the link member 31 corresponds to the height of each position 143A to 143G of the engagement protrusion shown in FIG. In particular, in the second portion 36c-2 having a steep angle of the engagement groove 36, the 8 cm bare disk D3, the 12 cm bare disk D2, and the disk cartridge 5 can be reliably chucked at appropriate positions.

(2. Disk tray locking mechanism)
As shown in FIG. 13 described in the above embodiment, the holder 140 of the base unit 170 has a first protrusion (right side) 144a and a second protrusion 144b as engaging portions that engage with the disc tray 200 when raised. At the corner. The disc tray 200 is formed with a first abutting portion 212a and a second abutting portion 212b that abut against the first projection 144a and the second projection 144b, respectively. As shown in FIG. 11A, when the holder 140 is lowered (when the disc is not clamped), the first and second protrusions 144a and 144b are in contact with the first and second contact portions 212a and 212b. Not touching. However, as shown in FIG. 11B, when the holder 140 is lifted and the disc is clamped, the first and second protrusions 144a and 144b are fitted into the second contact portions 212a and 212b. Touch. Thereby, the disc tray 200 and the holder 140 are locked. That is, the disk tray 200 and the base unit 170 are locked. FIG. 24 is an enlarged perspective view showing the vicinity of the first protrusion 144a and the first contact portion 212a.

  Thus, since the base unit 170 and the disc tray 200 are locked, the disc tray 200 becomes stationary with respect to the base unit 170, and the disc tray 200 can be positioned with high accuracy. The cartridge body 7 (see FIG. 4) of the disk cartridge 5 is substantially fixed by a fixing mechanism (not shown) provided on the disk tray 200. The fixing mechanism is, for example, an engaging portion 237 (see FIG. 3) such as a protrusion provided on the disc tray 200. Therefore, according to the present embodiment, for example, the disk cartridge 5 placed on the disk tray 200 is also stationary with respect to the base unit 170, and the disk D1 does not contact the inner surface of the disk cartridge 5. Further, it is possible to prevent the disc tray 200 from vibrating when the recording medium rotates at a high speed.

  In the present embodiment, the disk tray 200 can be locked using the movement of the base unit 170 according to the movement of the disk tray 200 by the loading mechanism. Therefore, a separate drive source for locking is not required, and the number of parts can be reduced. By reducing the number of parts, the rigidity of the movement of the locking mechanism is increased and manufacturing errors are reduced, so that a more accurate locking effect is exhibited.

  In the present embodiment, since the base unit 170 substantially directly locks the disc tray 200 via the holder 140, it can be locked with higher accuracy.

  As for the lock mechanism, as with the base unit drive mechanism 130 described above, the base unit 170 and the holder 140 may be integrated instead of separate.

  FIG. 25 is a schematic cross-sectional view of the vicinity of the first protrusion 144a and the first contact portion 212a. The first protrusion 144a has inclined surfaces 145 and 146 formed on the front side and the rear side so as to face the disc tray 200, respectively. The front slope 146 may not be particularly required. The rear slope 145 is formed so that the holder 140 rises as shown in FIG. 25 so that the first protrusion 144a can be easily fitted into the recess of the first abutting portion 212a and is securely locked. Has been. In particular, the vertical wall portions may be in contact with each other. For the same reason, a slope 215 is also formed on the side wall on the rear side of the first contact portion 212a. Note that the second protrusion 144b only needs to have the same configuration as that shown in FIG.

  26 is a cross-sectional view taken along line BB in FIG. The first contact portion 212a of the disc tray 200 is provided with a convex portion 214 (see also FIG. 24). Such a convex part is not provided in the 2nd contact part 212b. Thereby, even if there is a manufacturing error in the depth of the first and second contact portions 212a and 212b or a manufacturing error in the first and second heights, the first protrusion 144a is formed on the convex portion 214. They can abut and absorb these errors.

  Of course, the convex part 214 may be provided not on the first contact part 212a but on the second contact part 212b. Alternatively, the first contact portion 212a is provided with a convex portion having a first height, and the second contact portion is provided with a second convex portion having a second height different from the first height. It may be provided.

  FIG. 27 is a schematic plan view showing a modification of the position of the protrusion provided on the holder 140. In this example, the protrusions 244 may be disposed at positions closer to each other than the corners of the holder 240. As shown in FIG. 27 (as is the case with the above-described holder 140), the protrusion is disposed at the end portion on the front side where the moving amount of the holder 140 is the largest, so that it can be reliably locked.

  FIG. 28 is a schematic plan view showing still another form of the position of the protrusion. In this example, protrusions 254 are disposed on two sides on both sides of the holder 250, respectively. Further, the protrusion 254 is arranged so as to be aligned with the disk table 171 in the X direction. As a result, the rigidity of the disk tray 200 and the base unit 170 at the position of the disk table 171 where vibration is most likely to occur is increased.

  In the above description, a configuration in which two protrusions of the holders 140, 240, and 250 are provided is shown, but a configuration in which one protrusion and one abutting portion are provided may be used. Alternatively, the number of protrusions and contact portions may be three or more.

(3. Disc clamper)
As shown in FIG. 7, the above-described disc clamper 12 includes an upper plate 42 disposed above the holding plate 11 and a clamp plate 52 to which the upper plate 42 is fixed so as to rotate integrally with the upper plate 42. And have. FIG. 29 is a perspective view of the clamp plate as viewed from below. FIG. 30 is a cross-sectional view showing a state in which the disk is sandwiched and fixed between the clamp plate 52 and the disk table 171. In FIG. 10, the disc clamper 12 is shown with the holding plate 11 omitted.

  As shown in FIG. 30, the disk table 171 has a protrusion 171 a that fits into a hole 59 provided in the center of the disk D. The clamp plate 52 has a clamp surface 52 c for sandwiching the disk D with the disk table 171. The clamp plate 52 has a recess 52b in the center thereof, and a claw piece 52a as an elastic body is formed in the recess 52b. Since the claw piece 52a is provided integrally with the clamp plate 52 as described above, that is, compared to the case where a separate elastic body is provided on the clamp plate 52 by integral molding, the number of parts is reduced and the cost is reduced. Can be suppressed. However, an elastic body such as a separate spring or rubber may be provided in the recess 52b.

  FIG. 31 is a cross-sectional view showing a state in which the disc tray 200 is accommodated in the drive main body 100 and the disc table 171 and the clamp plate 52 are adsorbed without the disc D being placed on the disc tray 200. In this case, the disk table 171 and the clamp plate 52 are attracted by an attractive force by a magnet (not shown) provided on the disk table 171. The protrusion 171a fits into the recess 52b, but the claw piece 52a functions as a cushion, and noise during suction is suppressed.

  In the present embodiment, when the disk clamper 12 and the disk table 171 are separated from each other, they are separated from the magnetic attraction force of the magnet. In this case, the magnetic attractive force is relieved by the elastic deformation force (return force of the elastic body) of the claw piece 52a. Therefore, the force when the disc clamper 12 and the disc table 171 are separated can be reduced, which contributes to energy saving. Further, by reducing this force, noise when the disk clamper 12 and the support member are separated can be suppressed. Since there are many states in which there is no disk D in the optical disk drive device 10, the effect of this embodiment is great.

  Further, the clamping force (chucking force) of the disk D can be adjusted by appropriately changing the shape, number, or arrangement of the claw pieces 52a. This eliminates the need to adjust the magnetic attractive force of the magnet.

  On the other hand, as shown in FIG. 30, when the disk D is clamped, the claw piece 52a and the claw piece are so far that the claw piece 52a does not give a substantial elastic deformation force (elastic repulsive force) to the projection 171a. 52a contacts or approaches. Thereby, an extra force when the disk D is fixed by the disk clamper 12 can be reduced.

  In the present embodiment, the disk table 171 has a built-in magnet. However, a configuration in which a magnet is provided on the disk clamper 12 is also conceivable. Or both may be provided with a magnet.

  FIG. 32 is a table when the inventor measured the clamping force (unit: N) (chucking force) when the disc clamper 12 does not have the disc D and the disc D has various thicknesses. . 32A shows a disk without a disk, FIG. 32B shows a disk with a thickness of 1.2 mm, and FIG. 32C shows a disk with a thickness of 1.5 mm. The experiment was performed in triplicate for each of the no disc and the two discs. There are four measurement points in the circumferential direction of the disk table 171 (0 °, 90 °, 180 °, 270 °). FIG. 33 is a graph showing FIG.

  34 (A) to 34 (C) are tables showing the clamping force by the conventional clamper without the claw piece 52a corresponding to FIGS. 32 (A) to 32 (C), respectively. In this experiment using the conventional clamper, four disk tables 171 were performed for each of the diskless, 1.2 mm disk, and 1.5 mm disk. FIG. 35 is a graph showing FIG.

  33 and 35 are compared, the presence of the disk clamper 12 according to the embodiment of the present invention can reduce the force when the disk clamper 12 and the disk table 171 are separated when there is no disk. It can be seen that the effect is great.

(4. Disk cartridge holding mechanism)
FIG. 36 is an exploded perspective view of the cover plate 300 and the pressing member 400. However, in FIG. 36, the disk clamper 12 and the holding plate 11 for holding it are not shown.

  The pressing member 400 is a member that presses the cartridge body 7 of the disk cartridge 5. The pressing member 400 includes a base portion 401, a pressing bar 402 and an engaging bar 403 provided on the base portion 401. Two pressing bars 402 are provided so as to extend from the base portion 401 to the front side and the rear side, respectively. The base portion 401 and the pressing bar 402 form a substantially H shape when seen in a plan view. Two engagement bars are provided to extend rearward from the base portion 401.

  FIG. 37 is an enlarged perspective view showing a portion surrounded by a broken line C shown in FIG. An engagement groove 405 that engages with the cover plate 300 is formed on the side surface of the base portion 401 (first engagement mechanism or engagement portion). Two engagement grooves 405 are provided on one side, and two engagement grooves 405 are also provided on the opposite side surface in the X direction. The engagement groove 405 is formed obliquely so as to gradually go upward as it goes from the rear side (Y2 side) to the front side (Y1 side).

  As shown in FIG. 1, a metal leaf spring 406 is mounted on the upper portion of the pressing bar 402 of the pressing member 400. However, the metal plate spring 406 is not necessarily required, and the pressing bar itself may have a spring force.

  The cover plate 300 has grooves 302 into which the four pressing bars 402 of the pressing member 400 are fitted, and a recess 301 is provided at a place where the base portion is fitted. Further, the cover plate 300 has grooves 303 into which the two engaging bars 403 of the pressing member 400 are respectively fitted. Even if the pressing bar 402 or the like fits into the groove 302 or the like, the pressing member 400 is fitted in a state in which it can move in the Y direction and the Z direction, as will be described later. Thus, the pressing member 400 is formed in a plate shape, and the pressing member 400 and the cover plate 300 are configured to be a single plate shape. As a result, the cover plate 300 can be thinned, and hence the drive main body 100 can be thinned.

  FIG. 38 is an enlarged perspective view showing a portion surrounded by a broken line D in FIG. As shown in FIG. 38, the cover plate 300 has an engagement protrusion 305 that engages with the engagement groove 405 formed on the side surface of the base portion 401 in the vicinity of the opening. The pressing member 400 is positioned with respect to the cover plate 300 by engaging the engaging groove 405 with the engaging protrusion 305. The pressing member 400 moves in the vertical direction (Z direction) while moving in the Y direction with respect to the cover plate 300 by the third cam structure configured by the engaging grooves 405 and the engaging protrusions 305.

  As shown in FIG. 1, a coil spring 407 is connected between the front end of the cover plate 300 and the front side of the pressing member 400. As shown in FIG. 2, when the disk tray 200 is pulled out, the coil spring 407 is in a balanced state, that is, not expanded or contracted. Instead of the coil spring 407, another spring such as a leaf spring may be used.

  FIG. 39 is a perspective view showing an engaging portion between the engaging bar 403 of the pressing member 400 and the disc tray 200. The engagement bar 403 has a hook portion 404 that protrudes in a direction perpendicular to the direction in which the engagement bar 403 extends (second engagement mechanism) at the tip thereof. When the disc tray 200 is moved, the hook portion 404 comes into contact with and engages with a protruding portion 261 that protrudes from the surface of the disc tray 200. As shown in FIG. 12, the protruding portion 261 is arranged side by side in the X direction on the rear side of the first concave portion 211 on which the disc tray 200 is placed. FIG. 40 is a schematic cross-sectional view showing a state of engagement between the hook portion 404 and the protruding portion 261 as seen from the direction F in FIG.

  As shown in FIG. 36, the pressing member 400 includes a restricting plate (a restricting portion) 408 that restricts the movement of the holding plate 11 that holds the disc clamper 12, for example, formed between two engaging bars 403. .

  41 is a cross-sectional view of the cover plate 300, the pressing member 400, and the like. 41 is a view when the disc tray 200 is in the second position pulled out from the drive main body 100 as shown in FIG. FIG. 43A is an enlarged view of a portion surrounded by a broken line G shown in FIG. As shown in FIG. 41, one end of the holding plate 11 is mounted on the cover plate 300 via the mounting spring 14 as described above. The restricting plate 408 of the pressing member 400 is disposed so as to be submerged under the holding plate 11, and the restricting plate 408 is in substantially contact with the back surface of the holding plate 11. Therefore, in this state, the further downward movement of the holding plate 11 is restricted by the restriction plate 408.

  FIG. 42 is a diagram sequentially illustrating operations when the pressing member 400 presses the disc cartridge 5 when the disc tray 200 is pulled into the drive main body 100. In FIG. 41, not all the drive main body 100 is shown, and the cover plate 300, the pressing member 400, etc. are shown for easy understanding.

  As shown in FIG. 42A, when the disc tray 200 is pulled out from the drive main body 100 (second position), the pressing member 400 stands by at the initial position by the coil spring 407. FIG. 44 is a perspective view showing the relationship between the disc tray 200 and the pressing member 400 at this time. In the state shown in FIG. 42A, as described above, the regulating plate 408 is in contact with the back surface of the holding plate 11 and the movement of the holding plate 11 is restricted (FIG. 43 ( A)).

  As shown in FIG. 42B, when the disc tray 200 is pulled into the drive main body 100 in the Y2 direction by the loading mechanism 150 (see FIG. 5) and moved by a predetermined distance, the protrusion 261 of the disc tray 200 and the hook Part 404 begins to engage. The position of the disc tray 200 when the protrusion 261 of the disc tray 200 and the hook portion 404 start to be engaged is defined as a “predetermined position”. When the engagement is started, the pressing bar 402 of the pressing member 400 is not yet in contact with the cartridge body 7.

  From the predetermined position, the disc tray 200 is further drawn into the drive main body 100 in the Y2 direction by the loading mechanism 150. Then, as shown in FIG. 42C, the pressing member 400 is moved in the Y2 direction by the third cam structure constituted by the engaging protrusion 305 of the cover plate 300 and the engaging groove 405 of the pressing member 400. While slowly descending. FIG. 45 is a perspective view showing the relationship between the disc tray 200 and the pressing member 400 at this time. During this time, the cartridge body 7 gradually receives pressure from the pressing member 400, and the pressing member 400 substantially stops descending at the first position where the disc tray 200 is accommodated in the drive body 100.

  In addition, since the pressing member 400 moves downward while moving in this way, as shown in FIG. 43B, the regulating plate 408 also moves downward while moving. As a result, the holding plate 11 can move downward, the disk table 171 approaches the disk clamper 12 (see FIG. 43A, and the disk clamper 12 is omitted in FIG. 43B), and the disk is chucked. . That is, the movement of the holding plate 11 is restricted by the restriction plate 408 from the state shown in FIG. 42A to the state shown in FIG. Therefore, for example, when the disk cartridge 5 is placed on the disk tray 200 and the disk tray 200 is pulled into or pulled out of the drive body 100, the disk cartridge 5 and the disk clamper 12 come into contact with each other. Can be prevented.

  As described above, in the present embodiment, the pressing member 400 is pressed so that force is gradually applied to the cartridge body 7, so that the disk cartridge 5 is not damaged.

  In the present embodiment, since the pressing member 400 is directly connected to the drive main body 100 and the disc tray 200, the number of parts can be reduced. Typically, the pressing member 400 may be an integral single piece. By reducing the number of parts in this way, the rigidity of the movement of the pressing member 400 and the disk tray 200 is increased, and manufacturing errors can be reduced.

  In the pressing member 400 according to the present embodiment, a plurality of engaging grooves 405 are provided in the base portion 401 between the pressing bars 402, so that the pressing member when the pressing member 400 moves with respect to the cover plate 300. The rigidity of 400 is increased.

(5. Opening / closing mechanism of the shutter of the disk cartridge)
FIG. 46 is a perspective view from below showing the shutter opening / closing mechanism 500 described above. FIG. 47 is a perspective view of the shutter opening / closing mechanism 500 viewed from the back side.

  The shutter opening / closing mechanism 500 is a mechanism that engages with a shutter mechanism (not shown) included in the disk cartridge 5 to open and close the shutter. The shutter mechanism of the disk cartridge 5 is described in detail in Japanese Patent Laid-Open No. 2006-294186.

  The shutter opening / closing mechanism 500 according to the present embodiment includes a base plate 501 having a front surface 502 and a back surface 503, a rack gear 504 provided on the front surface 502 side of the base plate 501, and the back surface 503 side to the front surface 502 side of the base plate 501. A front hook 505 and a rear hook 506 provided so as to protrude from the rear plate 503, and a plate spring 510 as an elastic body that is attached to the base plate 501 and presses the rack gear 504, the front hook 505, and the rear hook 506 from the back surface 503 side.

  As shown in FIG. 47, a laterally long hole 508 is formed substantially at the center of the base plate 501. The rack gear 504 is disposed so as to be exposed from the back surface 503 side to the front surface 502 side through the horizontally long hole 508. FIG. 48 is a cross section cut horizontally along the horizontally long hole 508, and FIG. 49 is a perspective view seen from the back side where the cross section can be seen. At both ends of the base plate 501, through holes 507 through which the front hook 505 and the rear hook 506 pass are provided. 50 is an enlarged view of the vicinity of the front hook 505 and the rear hook 506, and is an enlarged view of the portions surrounded by the broken lines J and K in FIG.

  The front hook 505 and the through hole 507 will be described. The through hole 507 has a tapered portion 509 that becomes gradually narrower from the back surface 503 to the front surface 502 of the base plate 501, and the front hook 505 also has a side surface that is shaped along the shape of the tapered portion 509 of the through hole 507. Have. The same applies to the rear hook 506, the through hole 507 has a tapered portion 509, and the rear hook 506 has a side surface shaped along the tapered portion 509.

  As shown in FIG. 49, the leaf spring 510 is mounted on the back surface 503 side of the base plate 501, for example. The leaf spring 510 includes, for example, two first pieces 511 that urge the rack gear 504 from the back surface 503 side, and second pieces 512 that urge the front hook 505 and the rear hook 506 from the back surface 503 side, respectively. The difference in size between the first piece 511 and the second piece 512 is to cause a difference in spring force.

  When the shutter opening / closing mechanism 500 opens / closes the shutter of the disk cartridge 5, the shutter opening / closing mechanism 500 opens the shutter in conjunction with the movement of the disk tray 200 in the drive main body 100 when the disk cartridge 5 is placed on the disk tray 200. . While the disk tray 200 is being pulled into the drive main body 100, the shutter is opened by being caught in a notch (not shown) of the shutter mechanism of the cartridge main body 7 in the order of the front hook 505 → the rack gear 504 → the rear hook 506. . On the other hand, when the disc tray 200 is pulled out from the drive main body 100, the shutter closes by being caught in the notches in the order of the rear hook 506 → the rack gear 504 → the front hook 505. FIG. 51 is a perspective view showing the positional relationship between the shutter opening / closing mechanism 500 and the disk cartridge 5 when the disk tray 200 is accommodated in the drive main body 100 and the shutter is closed.

  As described above, in the shutter opening / closing mechanism 500 according to the present embodiment, the rack gear 504, the front hook 505, and the rear hook 506 are urged by the single plate spring 510, so that the thickness of the base plate 501 of the shutter opening / closing mechanism 500 is increased. Thinning in the vertical direction can be realized.

  Moreover, since the through-hole 507 has the taper part 509 and the front hook 505 and the rear hook 506 have a shape along the taper part 509, the front hook 505 and the rear hook 506 can be positioned reliably. Therefore, the front hook 505 and the rear hook 506 are securely engaged with the notches.

  FIG. 52 is a perspective view showing a video reproduction apparatus as an electronic apparatus in which the above-described optical disc drive apparatus is mounted. The video reproduction device 50 has a main body 55, and the disc tray 200 is pulled out from the front panel 56 of the main body 55. The video playback device 50 may be a device capable of recording video as well as video playback, such as a BD recorder and HDD (Hard Disk Drive) recorder. The main body 55 of the video reproduction device 50 is provided with a signal generation circuit (not shown) that generates an electric signal for recording or reproducing a signal via the pickup 180 of the optical disc drive device 10. The signal generation circuit is configured by hardware, software, or a combination thereof, and may be a known circuit.

  FIG. 53 is a perspective view showing a PC (Personal Computer) 60 as an electronic device in which the optical disk drive device 10 is mounted.

  The electronic devices are not limited to the devices shown in FIGS. 52 and 53, and examples include audio devices, projectors, game devices, car navigation devices, and other electrical appliances.

  As described above, the embodiment according to the present invention is not limited to the embodiment described above, and other various embodiments are conceivable.

  For example, when a solid-state memory is used as a recording medium, an apparatus including a transport body that transports the solid-state memory instead of a disk tray can be considered as the recording medium driving device. In this case, there is no need for the disc clamper, or another fixing mechanism is used instead of the disc clamper.

1 is a perspective view showing an optical disc drive apparatus according to an embodiment of the present invention. FIG. 6 is a perspective view showing a state in which the disc tray is pulled out from the drive body. It is sectional drawing for demonstrating the mounting part of a disc tray. It is a perspective view showing a disk cartridge. It is a top view which shows the chassis and loading mechanism of the state from which the cover plate removed. It is the perspective view seen from the back side of FIG. It is a perspective view of the cover board containing the cross section cut by the horizontal line of a Y direction. It is a top view which shows the back surface side of a disk tray. It is the perspective view which expanded the inclination part vicinity of a guide groove. It is a perspective view which shows a part of base unit. It is a perspective view which shows a part of base unit hold | maintained at the holder. It is a figure for demonstrating a motion of a base unit drive mechanism. It is a figure for demonstrating a motion of a base unit drive mechanism. It is a perspective view which shows the base unit seen from the back side of the disc tray. It is a rear view which shows the link part of a base unit. It is a figure which shows the motion of the link member with respect to a disc tray. It is a figure which shows the motion of the link member with respect to a disc tray. It is the figure which showed the position of the engaging protrusion of the holder in the engaging groove of the vertical board of a link member in loading operation | movement. It is a figure which shows the chucking operation | movement when chucking the disk and disk cartridge of a different magnitude | size. It is a figure when a link member is located in the left side. It is a figure for demonstrating that a base unit moves so that circular arc shape may be drawn. It is a rear view of the link member of a base unit drive mechanism. FIG. 23 is an enlarged view of the vicinity of the inclined portion of the end portion of the guide groove of the disc tray corresponding to the link member shown in FIG. 22. It is the perspective view which expanded and showed the 1st protrusion and the 1st contact part vicinity. It is typical sectional drawing near the 1st projection and the 1st contact part. It is the BB sectional view taken on the line in FIG. It is a typical top view which shows the modification of the position of the processus | protrusion provided in the holder. It is a typical top view which shows another form of the position of protrusion. It is the perspective view which looked at the clamp board from the bottom. FIG. 4 is a cross-sectional view showing a state in which a disc is fixed by being sandwiched between a clamp plate and a disc table. FIG. 5 is a cross-sectional view showing a state in which the disc tray is accommodated in the drive main body and the disc table and the clamp plate are adsorbed with no disc placed on the disc tray. It is a table | surface of actual measurement of the force (unit: N) (chucking force) when a disc clamper clamps the disc of various thickness when there is no disc. It is a graph showing FIG. It is a table | surface which shows the clamping force by the conventional clamper. It is a graph showing FIG. It is the perspective view which decomposed | disassembled and showed the said cover board and the press member. It is a perspective view which expands and shows the part enclosed with the broken line C shown in FIG. It is a perspective view which expands and shows the part enclosed with the broken line D in FIG. It is a perspective view which shows the engaging part of the engaging bar of a press member, and a disc tray. It is typical sectional drawing which shows the mode of engagement of a hook part and a protrusion part seen from the direction of F in FIG. It is sectional drawing, such as a cover board and a press member. FIG. 5 is a diagram illustrating operations in order when the pressing member presses the disk cartridge when the disk tray is pulled into the drive main body. It is a figure for demonstrating the effect | action of the control board of a press member. It is a perspective view which shows the relationship between a disc tray and a press member. It is a perspective view which shows the relationship between a disc tray and a press member. It is a perspective view from the bottom which shows a shutter opening and closing mechanism. It is the perspective view seen from the back side of the shutter opening / closing mechanism. It is sectional drawing cut | disconnected horizontally along a horizontal oblong hole. It is the perspective view seen from the back surface side which can see the cross section shown in FIG. FIG. 49 is an enlarged view of the vicinity of a front hook and a rear hook, and is an enlarged view of portions surrounded by broken lines J and K in FIG. FIG. 5 is a perspective view showing a positional relationship between a shutter opening / closing mechanism and a disk cartridge when a disk tray is housed in a drive body and a shutter is closed. It is a perspective view which shows a video reproduction apparatus as an electronic device carrying the optical disk drive device demonstrated above. It is a perspective view which shows PC as an electronic device with which the optical disk drive device is mounted.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Optical disk drive apparatus 31 ... Link member 50 ... Video | video reproduction apparatus 60 ... PC
DESCRIPTION OF SYMBOLS 100 ... Drive main body 130 ... Base unit drive mechanism 131 ... Link member 140, 240 ... Holder 144a ... 1st protrusion 144b ... 2nd protrusion 145 ... Slope 146 ... Slope 150 ... Loading mechanism 151 ... Loading motor 170 ... Base unit 180 ... Pickup 200, 600 ... Disc tray 215 ... Slope 211 ... First recess 212 ... Second recess 212a ... First contact portion 212b ... Second contact portion 212a ... Second contact portion 213 ... First 3 concave portions 214 ... convex portions 244 ... projections

Claims (9)

The drive body,
A transport body having a projecting portion projecting upward, the transport body capable of placing a disk cartridge having a disk capable of recording a signal and a cartridge body containing the disk ; and
Between a first position in which the carrier is received in the drive body and a second position in which the carrier is pulled out from the drive main body, and a loading mechanism for moving the conveying member,
A support unit that supports the disk; and a pickup that records or reproduces the signal of the disk supported by the support member; and a base unit built in the drive body;
A lock mechanism capable of locking the base unit and the transport body ;
The pressing force applied to the cartridge main body is increased according to the movement of the transport body when the transport body moves from a predetermined position between the first position and the second position to the first position. And a pressing member that presses the cartridge body,
The drive main body has an engaging projection that protrudes in a horizontal direction along a surface that is perpendicular to a moving direction of the transport body and that moves the transport body,
The pressing member has a base portion, a first pressing bar extending in a direction in which the pressing member moves from the base portion, and a hook portion, and the pressing member moves in the direction from the base portion, A second pressing bar extending to the opposite side of the first pressing bar and a side surface of the base portion are formed so as to be inclined upward toward the direction in which the transport body is accommodated in the drive body. An engagement groove that engages with the engagement protrusion, and a hook portion that is provided at a tip of the second pressing bar and is engageable with the protruding portion of the transport body,
When the hook portion of the pressing member starts to be engaged with the protruding portion from the predetermined position of the transport body, the pressing member starts to move, and the engagement protrusion of the drive body and the engagement of the pressing member The pressing member presses the cartridge main body so as to increase the pressing force applied to the cartridge main body in accordance with the movement of the pressing member by the cam structure constituted by the mating groove.
Disk drive device. The disk drive device according to claim 1,
  A plate member having one end mounted on a cover plate constituting a part of the drive main body, and the other end movable with respect to the one end;
  A disk clamper mounted on the other end of the plate member;
  The pressing member is
  A restricting portion for restricting a downward movement of the disc clamper when the transport body is between the first position and the predetermined position;
  Disk drive device. The disk drive device according to claim 1,
The locking mechanism is
In accordance with the movement of the transport body, the support member is moved closer to the transport body and locked.
Disk drive device. The disk drive device according to claim 3 , wherein
The locking mechanism is
A holder having an engaging portion engageable with the carrier, and holding the base unit;
A link member which is connected to the holder and connected to the holder and converts the movement of the carrier into the movement of the holder.
Disk drive device. The disk drive device according to claim 4 ,
The holder has a protrusion having a slope formed as the engaging portion so as to face the transport body,
The transport body has an abutting portion that abuts so that the protrusion fits.
Disk drive device. The disk drive device according to claim 5 ,
The holder has a first protrusion and a second protrusion as the engaging portion,
The carrier is used as the contact portion.
A first contact recess with which the first protrusion contacts;
A second contact recess with which the second protrusion contacts, and
A convex portion provided on either one of said first contact recess and said second abutment in the recess
Disk drive device. The disk drive device according to claim 6 ,
The holder has an end portion where the movement amount of the holder is the largest,
The engaging portion is disposed at the end portion.
Disk drive device. The disk drive device according to claim 6 ,
The holder is a frame-like member placed around the support member of the base unit,
The engaging portions are arranged on both sides of the support member so as to be aligned with the support member.
Disk drive device. The disk drive device according to any one of claims 1 to 8,
A shutter opening / closing mechanism for opening / closing a shutter mechanism of the cartridge body;
The shutter opening / closing mechanism includes
A base plate having a front surface, a back surface opposite to the front surface, and a through hole penetrating from the front surface to the back surface having a tapered portion that narrows from the back surface to the surface;
A rack gear disposed on the surface that engages with the shutter mechanism of the cartridge body;
A hook that is provided so as to protrude from the back surface side to the front surface side through the through hole, has a shape along the tapered portion of the through hole, and engages with the shutter mechanism;
An elastic body mounted on the base plate and pressing the hook from the back side.
Disk drive device.

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