JP2008186529A - Pickup traverse mechanism and optical disk drive - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pickup traverse mechanism which can effectively reduce the vibrations applied to the pickup by improving rigidity of the traverse chassis. <P>SOLUTION: The pickup traverse unit 10 is fixed to the traverse chassis 11 and has a motor 17 having a turntable 16 to hold and turn an optical disk, a pickup 14 provided on the traverse chassis 11 to optically read and/or record the information on the disk, and a feeding mechanism 15 to move the pickup 14 radially on the disk. The traverse chassis 11 has a first side 12a and a second side 12b along the direction that the pickup 14 moves. The first side 12a and the second side 12b are connected through a joint 43 below the area where the pickup 14 moves. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a pickup traverse device that reads information from an optical disc such as a compact disc (CD) and a digital versatile disc (DVD), and records information on the optical disc, and an optical disc apparatus equipped with the pickup traverse device, and more particularly to an optical disc. The present invention relates to a structure of a traverse chassis that supports a motor that rotates a motor and a pickup unit.

  For example, an optical disk device that records information on an optical disk such as a CD or a DVD or reads information recorded on an optical disk includes a housing in which the optical disk is inserted and removed via a tray, and a pickup housed in the housing. A traverse device.

  For example, as disclosed in Patent Document 1, a pickup traverse apparatus includes a spindle motor having a turntable that holds and rotates an optical disk, a pickup unit that reads and writes information from and on the optical disk, and a pickup unit that has a radius of the optical disk. It has a feed mechanism that moves in the direction and a traverse chassis that collectively supports these components.

  The traverse chassis is made of a metal material such as a steel plate because it needs to firmly hold components such as a spindle motor. The feed mechanism for moving the pickup unit includes a pair of guide shafts arranged parallel to each other along the moving direction of the pickup unit, a feed screw adjacent to one guide shaft, a traverse motor for rotating the feed screw, and a pickup An engagement member fixed to the unit and engaged with the feed screw. The guide shaft, feed screw, and traverse motor are each supported by a traverse chassis.

  The pickup unit is interposed between the guide shafts and is slidably supported by these guide shafts. Therefore, when the feed screw rotates, the pickup unit moves linearly in the radial direction of the optical disc along the guide shaft.

  By the way, in the conventional pickup traverse apparatus, the opening part which avoids interference with a pickup unit is formed in the traverse chassis. The opening has a size that covers the entire moving area of the pickup unit. Due to the presence of the opening, the traverse chassis is formed in a rectangular frame shape surrounding the pickup unit and the feeding mechanism.

For this reason, the traverse chassis has a pair of side portions extending in the moving direction of the pickup unit on both sides of the pickup unit, and these side portions are narrower than the size of the opening. It has become a thing. In the conventional pickup traverse apparatus, a feed screw and a traverse motor are supported on the narrow side portion of the traverse chassis.
JP 2003-123457 A

  According to the conventional traverse chassis, since the side portion of the traverse chassis has a narrow shape by providing the opening portion that avoids the pickup unit, it is difficult to sufficiently secure the rigidity of the side portion. Then, since the spindle motor supported by the traverse chassis is accompanied with vibration when the optical disk is rotated, there is a problem that when the side portion having low rigidity is vibrated by the spindle motor, the spindle motor vibrates together.

  In addition, the center of gravity of the optical disk may be decentered from the rotation center of the spindle motor due to the influence of, for example, manufacturing errors and labels attached to the optical disk. Since such an optical disk with a biased center of gravity has a poor weight balance during rotation, it is inevitable that the optical disk vibrates greatly when the optical disk is rotated at high speed by a spindle motor.

  Therefore, in particular, when an optical disc with a biased center of gravity is rotated at a high speed, vibrations of the optical disc are transmitted to the traverse chassis, and a side portion of the traverse chassis having low rigidity vibrates.

  As a result, the vibration is transmitted to the feed screw supported on the side of the traverse chassis or the guide shaft, and the pickup unit engaged with the feed screw resonates, and the reading performance of information on the optical disk deteriorates. appear.

  An object of the present invention is to obtain a pickup traverse device that can increase the rigidity of a traverse chassis and reliably suppress vibration transmitted to a pickup unit.

  Another object of the present invention is to provide an optical disc apparatus that is equipped with a pickup traverse device excellent in vibration resistance and that can stably read and write information on the optical disc.

In order to achieve the above object, a pickup traverse device according to one aspect of the present invention provides:
A metal traverse chassis, a motor fixed to the traverse chassis and having a turntable for holding and rotating a disk-shaped recording medium, and information recorded on the recording medium provided on the traverse chassis A pickup unit that optically reads or / and optically records information on the recording medium, and a feed mechanism that moves the pickup unit in the radial direction of the recording medium.
The traverse chassis has a first side and a second side along the moving direction of the pickup unit, and the pickup unit is located between the first side and the second side. In addition, the first side portion and the second side portion of the traverse chassis are connected to each other via a connecting portion that passes below the moving region of the pickup unit.

In order to achieve the above object, an optical disc apparatus according to one aspect of the present invention includes:
A housing in which an optical disk is taken in and out, and a pickup traverse device housed in the housing are provided.
The pickup traverse device is
A metal traverse chassis, a motor fixed to the traverse chassis and having a turntable for holding and rotating the optical disc, and provided on the traverse chassis and optically reading information recorded on the optical disc Or / and a pickup unit for optically recording information on the optical disc, and a feed mechanism for moving the pickup unit in the radial direction of the optical disc.
The traverse chassis has a first side and a second side along the moving direction of the pickup unit, and the pickup unit is located between the first side and the second side. In addition, the first side portion and the second side portion of the traverse chassis are connected to each other via a connecting portion that passes below the moving region of the pickup unit.

  According to the present invention, the rigidity of the first and second side portions of the traverse chassis is remarkably improved due to the presence of the connecting portion, and the traverse chassis itself becomes mechanically strong and hardly vibrates. For this reason, it is possible to suppress the vibration from the recording medium such as the optical disk and the motor from being transmitted to the pickup unit, and to stably read and write information on the optical disk.

  Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.

  FIG. 1 and FIG. 2 disclose a half-height type optical disc apparatus 1 used for an electronic device such as a desktop computer. The optical disk device 1 includes a flat box-shaped housing 2. The front surface of the housing 2 is covered with a bezel 3, and a slot 5 for inserting and removing the tray 4 is formed in the bezel 3.

  The tray 4 has a disk mounting portion 4 a that receives the optical disk 6. The optical disk 6 is an example of a disk-shaped recording medium, and has a fitting hole 7 at the center of rotation. The tray 4 is supported by the housing 2 so as to be movable between a loading position and an unloading position.

  FIG. 2 shows a state where the tray 4 has been moved to the loading position. In the loading position, the tray 4 is accommodated in the housing 2, and the tray panel 4 b located at the front end of the tray 4 closes the slot 5. At the unloading position, the tray 4 is pulled out of the housing 2 through the slot 5 so that the optical disk 6 can be placed on the disk mounting portion 4a of the tray 4 and the optical disk 6 can be taken out from the disk mounting portion 4a. ing.

  As shown in FIG. 2, a printed circuit board 9 and a pickup traverse device 10 are accommodated in the housing 2. The printed circuit board 9 is for controlling the pickup traverse device 10 and is supported on the bottom of the housing 2.

  The pickup traverse device 10 is for reading information recorded on the optical disc 6 or recording information on the optical disc 6. The pickup traverse device 10 has a metal traverse chassis 11.

  As shown in FIGS. 3, 4, and 7, the traverse chassis 11 has a square plate shape having first to fourth side portions 12a, 12b, 12c, and 12d. For example, it is made of a steel plate having a thickness of 1.6 mm. The traverse chassis 11 is located above the printed circuit board 9 and is supported by the housing 2 so as to be movable up and down so as to rise toward the tray 4 when the tray 4 is moved from the unloading position to the loading position. Has been.

  The first and second side portions 12 a and 12 b of the traverse chassis 11 are located on both side portions along the width direction of the pickup traverse device 10. The third and third side portions 12 c and 12 d of the traverse chassis 11 are located at both end portions along the depth direction of the pickup traverse device 10.

  The traverse chassis 11 includes a disk rotating mechanism 13 that rotates the optical disk 6, a pickup unit 14 that optically reads and writes information with respect to the optical disk 6, and a feed mechanism 15 that linearly reciprocates the pickup unit 14 in the radial direction of the optical disk 6. Supports all at once.

  The disk rotation mechanism 13 includes a disk-shaped turntable 16 that supports the optical disk 6 and a cylindrical spindle motor 17 that rotates the turntable 16. The turntable 16 has a fitting protrusion 18 that protrudes upward. The fitting projection 18 enters the fitting hole 7 of the optical disc 6 from below when the traverse chassis 11 is raised. As a result, the optical disk 6 is placed on the turntable 16 of the spindle motor 17.

  The spindle motor 17 has a rotating shaft 19. One end of the rotating shaft 19 is fixed coaxially to the turntable 16. The other end of the rotating shaft 19 is rotatably supported by a metal motor bracket 20. A wiring circuit board 21 of the spindle motor 17 is mounted on the upper surface of the motor bracket 20.

  As shown in FIG. 2, a disk clamper 22 is supported on the upper wall 2 a of the housing 2. The disc clamper 22 clamps the periphery of the fitting hole 7 of the optical disc 6 in cooperation with the turntable 16 when the fitting convex portion 18 of the turntable 16 enters the fitting hole 7 of the optical disc 6. With this clamp, the optical disk 6 rotates together with the turntable 16.

  As schematically shown in FIG. 5, the pickup unit 14 includes a pickup actuator 24 including an objective lens 23, a semiconductor laser diode 25, and an optical system component 26.

  The objective lens 23 of the pickup actuator 24 faces the recording surface of the optical disk 6 supported by the turntable 16 from below. The objective lens 23 can be moved in the focusing direction by driving the first coil 27 and can be moved in the tracking direction by driving the second coil 28.

  Laser light emitted from the semiconductor laser diode 25 is irradiated onto the recording surface of the optical disc 6 through the optical system component 26 and the objective lens 23. The reflected light from the optical disk 6 is guided to the photodetector 29 in the pickup unit 14 through the objective lens 23 and the optical system component 26.

  The pickup unit 14 of the present embodiment is strengthened to be thin so that it can be comfortably accommodated in the flat housing 2. A flexible wiring board 30 is connected to the pickup unit 14. The flexible wiring board 30 is an example of a wiring component, and is drawn out of the pickup unit 14 and electrically connected to the printed circuit board 9.

  As shown in FIGS. 3 and 6, the feed mechanism 15 includes a first guide shaft 31 a, a second guide shaft 31 b, a lead screw 32, and a thread motor 33. The first and second guide shafts 31 a and 31 b extend along the depth direction of the pickup unit 14, and are arranged in parallel to each other with an interval in the width direction of the pickup unit 14.

  Both end portions of the first and second guide shafts 31a and 31b are fixed to the traverse chassis 11 via bearing fittings 34, respectively. The first side portion 12a of the traverse chassis 11 is located on the outer side of the first guide shaft 31a, and extends along the axial direction of the first guide shaft 31a. Similarly, the second side portion 12b of the traverse chassis 11 is located on the outer side of the second guide shaft 31b and extends along the axial direction of the second guide shaft 31b.

  The pickup unit 14 is interposed between the first and second guide shafts 31a and 31b. The pickup unit 14 has a first support portion 35a through which the first guide shaft 31a penetrates slidably, and a second support portion 35b through which the second guide shaft 31b engages slidably. ing. Therefore, the pickup unit 14 is supported by the traverse chassis 11 so as to be movable in the axial direction of the first and second guide shafts 31a and 31b.

  The pickup unit 14 can move linearly between a first position located on the innermost peripheral side of the recording surface of the optical disc 6 and a second position located on the outermost peripheral side of the recording surface of the optical disc 6. It has become. In a state where the pickup unit 14 is moved to the first position, the pickup unit 14 is adjacent to the spindle motor 17. When the pickup unit 14 is moved to the second position, the pickup unit 14 is furthest away from the spindle motor 17.

  As shown in FIG. 6, a bracket 37 is fixed to the upper surface of the first side portion 12 a of the traverse chassis 11. The bracket 37 supports the lead screw 32 and the thread motor 33. The lead screw 32 is disposed between the first side portion 12a of the traverse chassis 11 and the first guide shaft 31a in parallel with the first guide shaft 31a. The thread motor 33 rotates the lead screw 32 over a predetermined angle range according to the tracking signal.

  An engaging member 38 made of synthetic resin is attached to the first support portion 35a of the pickup unit 14. The engaging member 38 is elastically biased by a coil spring (not shown) so as to mesh with the lead screw 32, and the meshing state with the lead screw 32 is always maintained.

  For this reason, when the lead screw 32 is rotated by the thread motor 33, the pickup unit 14 moves linearly in the radial direction of the optical disk 6.

  As shown in FIGS. 2 to 4 and 7, the traverse chassis 11 has a first opening 41 through which the spindle motor 17 passes and a second opening 42 through which the flexible wiring board 30 passes. Yes. The first opening 41 and the second opening 42 are separated from each other in the moving direction of the pickup unit 14. The second opening 42 is located immediately above the printed circuit board 9, and the thread motor 33 is located at one end of the second opening 42.

  Furthermore, as shown in FIGS. 6 and 7, the traverse chassis 11 has a connecting portion 43 between the first opening 41 and the second opening 42. The connecting portion 43 extends between the first side portion 12a and the second side portion 12b of the traverse chassis 11 to connect the side portions 12a and 12b. According to the present embodiment, the connecting portion 43 is an integral structure with the first and second side portions 12a and 12b.

  As best shown in FIG. 7, the connecting portion 43 crosses below the moving region of the pickup unit 14 and has a plate shape having a width dimension along the moving direction of the pickup unit 14. When the pickup unit 14 is moved to the first position, most of the pickup unit 14 faces the connecting portion 43. When the pickup unit 14 is moved from the first position to the second position, most of the pickup units 14 are disengaged from the connecting portion 43 and advanced onto the second opening 42.

  In other words, the traverse chassis 11 has a shape that does not have a special opening for avoiding interference with the pickup unit 14 at a position corresponding to the moving region of the pickup unit 14.

  A recessed portion 45 that is recessed downward is formed at a position corresponding to the bracket 37 in the connecting portion 43 of the traverse chassis 11. The recess 45 is for absorbing the thickness of the bracket 37, and a portion 37 a of the bracket 37 positioned below the lead screw 32 enters the recess 45.

  Further, the traverse chassis 11 integrally has flange-like ribs 46a and 46b bent downward from the side edges of the first and second side portions 12a and 12b. The ribs 46a and 46b extend over the entire length of the first and second side portions 12a and 12b. Due to the presence of the ribs 46 a and 46 b, the first and second side portions 12 a and 12 b are reinforced and are difficult to bend in the thickness direction of the traverse chassis 11.

  As shown in FIG. 9, the first opening 41 through which the spindle motor 17 passes is formed in the third side portion 12 c of the traverse chassis 11, and a part of the opening edge is located in the connecting portion 43. is doing.

  The spindle motor 17 is fixed to the traverse chassis 11 via a motor mount plate 47 made of synthetic resin. The motor mount plate 47 is for defining the mounting position of the spindle motor 17 with respect to the traverse chassis 11. The motor mount plate 47 is interposed between the lower surface of the traverse chassis 11 and the motor bracket 20 and surrounds the cylindrical spindle motor 17 in cooperation with the first opening 41.

  As shown in FIG. 7, the traverse chassis 11 has first to third screw holes 48 a, 48 b, 48 c around the first opening 41. The first to third screw holes 48 a, 48 b, 48 c are an example of a fixing portion, and are arranged in the circumferential direction of the spindle motor 17 with an interval of approximately 120 °. In the present embodiment, the first and second screw holes 48 a and 48 b are formed in the third side portion 12 c of the traverse chassis 11, and the third screw hole 48 c is the connecting portion 43 of the traverse chassis 11. Is formed.

  Three screw insertion holes 49 (only one is shown in FIG. 9) are formed in the motor bracket 20 of the spindle motor 17. The screw insertion holes 49 correspond to the first to third screw holes 48 a, 48 b, 48 c of the traverse chassis 11. Further, the motor mount plate 47 has three through holes 50 (only one is shown in FIG. 9). The through hole 50 corresponds to the first to third screw holes 48 a, 48 b, 48 c of the traverse chassis 11 and the screw insertion hole 49 of the motor bracket 20.

  A screw 51 is inserted into the screw insertion hole 49 of the motor bracket 20 from below the traverse chassis 11. The screw 51 passes through the through hole 50 of the motor mount plate 47 and is screwed into the first to third screw holes 48 a, 48 b, 48 c of the traverse chassis 11. By this screwing, the cylindrical spindle motor 17 is fixed to the traverse chassis 11 at three locations spaced approximately 120 ° in the circumferential direction.

  Accordingly, the spindle motor 17 is uniformly clamped and held by the traverse chassis 11 over the entire circumference without causing any deviation in the circumferential direction, and the spindle motor 17 can be firmly supported by the traverse chassis 11.

  According to the optical disc apparatus 1 having such a configuration, the spindle motor 17 supported by the traverse chassis 11 is accompanied with vibration when the optical disc 6 placed on the turntable 16 is rotated.

  In addition, the optical disc 6 has the center of the fitting hole 7 slightly deviated from the rotation center of the spindle motor 17 due to a manufacturing error or the like, or the presence of a label attached on the optical disc 6 or the like. It is often seen that the weight balance is lost. In this type of optical disk 6, the center of gravity position is inevitably deviated from the center of rotation of the spindle motor 17, and when the optical disk 6 having a biased center of gravity is rotated at a high speed, the vibration of the optical disk 6 increases.

  Therefore, the traverse chassis 11 receives vibration through the spindle motor 17 when the optical disk 6 is rotating.

  The traverse chassis 11 disclosed in the first embodiment has a connecting portion 43 at a position corresponding to the moving region of the pickup unit 14, and the connecting portion 43 crosses the moving region of the pickup unit 14. 11 between the first side portion 12a and the second side portion 12b.

  Therefore, the first side portion 12a and the second side portion 12b of the traverse chassis 11 can be integrally coupled via the connecting portion 43, and the first and second sides in comparison with the prior art. The rigidity of the portions 12a and 12b is remarkably improved. As a result, the traverse chassis 11 itself is mechanically strong and hardly vibrates, and the vibration transmitted from the spindle motor 17 or the rotating optical disk 6 can be reliably suppressed.

  Therefore, vibrations of the spindle motor 17 and the rotating optical disk 6 are applied to the lead screw 32 fixed to the first side portion 12a, the engaging member 38 of the pickup unit 14 meshing with the lead screw 32, and the first guide shaft 31a. It is possible to suppress transmission. Therefore, the vibration proof performance of the pickup unit 14 is improved, and reading and writing of information with respect to the optical disc 6 can be performed stably.

  At the same time, as the rigidity of the first and second side portions 12a and 12b of the traverse chassis 11 is improved, the traverse chassis 11 is less likely to vibrate, so that the generation of noise due to this vibration can be suppressed. Therefore, the silent operation of the optical disc apparatus 1 is possible.

  Further, according to the above configuration, the first opening 41 through which the spindle motor 17 passes is formed in the region from the third side portion 12 c of the traverse chassis 11 to the connecting portion 43. A third screw hole 48 c, which is one of the three screw holes 48 a, 48 b, 48 c located at the peripheral portion, is located at a location corresponding to the connecting portion 43.

  For this reason, the first to third screw holes 48a, 48b, 48c can be distributed and arranged in three places at intervals of approximately 120 ° in the circumferential direction of the spindle motor 17, and these first to third By screwing the screw 51 into the screw holes 48a, 48b, 48c, the spindle motor 17 can be uniformly fixed to the traverse chassis 11 over the entire circumference.

  Therefore, the mounting rigidity of the spindle motor 17 to the traverse chassis 11 is improved, and the spindle motor 17 can be firmly supported by the traverse chassis 11. As a result, the vibration transmitted to the traverse chassis 11 when the optical disk 6 is rotated can be further reduced, and there is an advantage that it is advantageous in blocking transmission of vibration to the pickup unit 14.

  In addition, the second opening 42 of the traverse chassis 11 is located in a region corresponding to the lower side of the pickup unit 14 when the pickup unit 14 is moved to the second position. For this reason, the flexible wiring board 30 drawn out from the pickup unit 14 is passed through the second opening 42 even though the traverse chassis 11 is interposed between the pickup unit 14 and the printed circuit board 9. 9 can be led.

  Therefore, the rigidity of the traverse chassis 11 can be sufficiently secured without impairing workability when wiring the flexible wiring board 30, and unnecessary vibration of the pickup unit 14 can be suppressed.

  At the same time, since the pickup unit 14 mounted on the traverse chassis 11 is strengthened to be thin, the pickup traverse device 10 can correspond to the casing 2 which is flat and has no space in the thickness direction. Can be made thin and compact. For this reason, it is possible to sufficiently satisfy the recent demand for reducing the thickness of the optical disc apparatus 1.

  The present invention is not limited to the first embodiment described above, and various modifications can be made without departing from the spirit of the invention.

  For example, FIG. 10 discloses a second embodiment of the present invention.

  In the second embodiment, a configuration in which a thick pickup unit 61 is mounted on the traverse chassis 11 is shown.

  As shown in FIG. 10, the pickup unit 61 supported by the first and second guide shafts 31 a and 31 b has a bottom 61 a that is more than the upper surfaces of the first and second side portions 12 a and 12 b of the traverse chassis 11. Projects downward. Therefore, a recess 62 that avoids interference with the pickup unit 61 is formed in a portion of the connecting portion 43 of the traverse chassis 11 that crosses the moving region of the pickup unit 61. The recess 62 is configured by recessing the connecting portion 43 downward, and protrudes below the traverse chassis 11.

  According to such a configuration, even when the thick pickup unit 61 is mounted on the traverse chassis 11, the lack of rigidity of the traverse chassis 11 can be solved, and unnecessary vibration of the pickup unit 61 is suppressed. be able to.

  In the first embodiment, the connecting portion is an integral structure with the first and second side portions of the traverse chassis. However, the present invention is not limited to this. For example, the connecting portion may be made of a metal material different from the traverse chassis, and the connecting portion may be fixed to the first and second side portions by means such as screwing, welding, or adhesion.

1 is a perspective view of an optical disc apparatus according to a first embodiment of the present invention. 1 is a cross-sectional view of an optical disc device according to a first embodiment of the present invention. The perspective view which looked at the pick-up traverse apparatus which concerns on the 1st Embodiment of this invention from the upper direction of the traverse chassis. The perspective view which looked at the pick-up traverse apparatus which concerns on the 1st Embodiment of this invention from the downward direction of the traverse chassis. FIG. 2 is a block diagram schematically showing the configuration of a pickup unit in the first embodiment of the present invention. Sectional drawing which shows the positional relationship of a traverse chassis and a pickup unit in the 1st Embodiment of this invention. The top view of the traverse chassis of the 1st Embodiment of this invention. The side view of the traverse chassis seen from the direction of F8 line of FIG. Sectional drawing which shows the fixation structure of the spindle motor with respect to the traverse chassis in the 1st Embodiment of this invention. The bottom view which shows the fixation structure of the spindle motor with respect to the traverse chassis in the 1st Embodiment of this invention. Sectional drawing which shows the positional relationship of a traverse chassis and a pickup unit in the 2nd Embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 2 ... Housing | casing, 6 ... Recording medium (optical disk), 10 ... Pick-up traverse apparatus, 11 ... Traverse chassis, 12a ... 1st side part, 12b ... 2nd side part, 14 ... Pick-up unit, 15 ... Feed mechanism, DESCRIPTION OF SYMBOLS 16 ... Turntable, 17 ... Motor (spindle motor), 41 ... 1st opening part, 42 ... 2nd opening part, 43 ... Connection part.

Claims (10)

A metal traverse chassis,
A motor having a turntable fixed to the traverse chassis and holding and rotating a disk-shaped recording medium;
A pickup unit provided on the traverse chassis, optically reading information recorded on the recording medium, and / or optically recording information on the recording medium;
A pickup traverse device comprising: a feed mechanism for moving the pickup unit in the radial direction of the recording medium;
The traverse chassis has a first side and a second side along the moving direction of the pickup unit, and the pickup unit is located between the first side and the second side. The pick-up traverse apparatus characterized in that the first side part and the second side part are connected to each other via a connecting part that passes below the moving area of the pick-up unit. .   2. The pickup traverse apparatus according to claim 1, wherein the connecting portion of the traverse chassis is an integral structure with the first and second side portions.   3. The pickup traverse apparatus according to claim 1, wherein the connecting portion of the traverse chassis has a recess that is recessed so as to avoid interference with the pickup unit.   2. The traverse chassis according to claim 1, wherein the traverse chassis has an opening through which the motor penetrates at one end along the moving direction of the pickup unit, and a part of the opening is located at the connecting portion. Pickup traverse device.   5. The plurality of fixing portions for fixing the motor to the traverse chassis are formed around the opening portion of the traverse chassis according to claim 4, and the fixing portions are arranged at intervals in the circumferential direction of the opening portion. And a pickup traverse device, wherein at least one fixed portion is located at the connecting portion.   5. The traverse chassis according to claim 4, wherein the traverse chassis has another opening through which the wiring component connected to the pickup unit is passed at the other end along the moving direction of the pickup unit. The pickup traverse device is characterized in that the portion is located at the connecting portion.   2. The pickup traverse apparatus according to claim 1, wherein the first and second side portions of the traverse chassis each have a bent rib.   2. The feed mechanism according to claim 1, wherein the feed mechanism is (1) a pair of guides fixed to the traverse chassis so as to be parallel to each other along the moving direction of the pickup unit and slidably supporting the pickup unit. A shaft, (2) a lead screw fixed to the first side of the traverse chassis so as to be parallel to the guide shaft and rotated by a motor, and (3) a lead screw fixed to the pickup unit. And an engagement member that moves in the axial direction of the lead screw by engaging with the pickup traverse device. A metal traverse chassis having a first side and a second side located opposite the first side;
A motor having a turntable fixed to the traverse chassis and holding and rotating a disk-shaped recording medium;
A pickup unit that is provided on the traverse chassis and optically reads information recorded on the recording medium between a first side and a second side of the traverse chassis;
A feed mechanism for moving the pickup unit in the radial direction of the recording medium,
The traverse chassis is a pickup traverse device in which first and second side portions extend in a moving direction of the pickup unit,
The traverse chassis
(1) a first opening through which the motor passes;
(2) a second opening provided at a position away from the first opening in the moving direction of the pickup unit and through which a wiring component connected to the pickup unit is passed;
(3) The first side and the second side are connected to each other between the first opening and the second opening, and are positioned below the moving area of the pickup unit. A pickup traverse device, comprising: A housing into and out of the optical disc;
An optical disc device comprising a pickup traverse device housed in the housing,
The pickup traverse device is
A metal traverse chassis,
A motor having a turntable fixed to the traverse chassis and holding and rotating the optical disc;
A pickup unit which is provided on the traverse chassis and optically reads information recorded on the optical disc or / and optically records information on the optical disc;
A feeding mechanism for moving the pickup unit in the radial direction of the optical disc,
The traverse chassis has a first side and a second side along the moving direction of the pickup unit, and the pickup unit is located between the first side and the second side. An optical disc apparatus, wherein the first side portion and the second side portion are connected to each other via a connecting portion that passes below a moving area of the pickup unit.

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