JP2009205736A - Disk drive device and electronic equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To perform appropriately chucking operation, and to perform thinning. <P>SOLUTION: A outer case 6 is provided with a cover body 8 which is positioned at a reverse side of a pickup base 73 holding a disk type recording medium 100 attached to a disk table 78 between them and which can be deformed elastically, wherein the cover body is provided with: a press projection part 8b positioned opposite to an inner peripheral part of the disk type recording medium and projected to the disk type recording medium side; and a limiter 200 in which in a state in which the disk type recording medium is attached to the disk table, when the disk type recording medium is moved in the direction of closing to the cover body and the press projection part is pressed by the disk type recording medium, displacement of fixed quantity or more in the direction of separation of the cover body from the disk type recording medium is regulated. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to the technical field of disk drive devices and electronic equipment. Specifically, when chucking the disc-shaped recording medium to the disc table, a limiter is provided to restrict the displacement of the cover body, which is in contact with the disc-shaped recording medium, away from the disc drive unit in a direction away from the disc drive unit. The present invention relates to a technical field for optimization and reduction in thickness.

  There is a disk drive device that records and / or reproduces information signals on / from a disk-shaped recording medium (see, for example, Patent Document 1).

  In such a disk drive device, a disk-shaped recording medium is held by a disk table and a clamper and chucked, and the disk-shaped recording medium is held by an elastically deformable engaging claw provided on the disk table. Some types are chucked.

  In a disk drive device of a type in which a disk-shaped recording medium is held by an engaging claw and chucked, when the disk-shaped recording medium is inserted from a disk insertion slot, the disk-shaped recording medium is loaded by a disk loading mechanism, The disc-shaped recording medium is conveyed to a centering position where the center hole is located immediately above the centering protrusion of the disc table.

  When the disc-shaped recording medium is conveyed to the centering position, the disc drive unit having the disc table and the optical pickup is subsequently raised. As the disk drive unit is raised, the engaging claw provided on the outer periphery of the center ring protrusion of the disk table comes into contact with the inner periphery of the disk-shaped recording medium, and the disk-shaped recording medium moves up the disk driving unit. Is lifted along with.

  The disc-shaped recording medium is brought into contact with a pressing projection provided on a cover body having an inner peripheral portion located above the disc-shaped recording medium. When the inner periphery of the disk-shaped recording medium comes into contact with the pressing protrusion of the cover body, the cover body is elastically deformed by the ascending operation of the disk drive unit, but the cover body is elastically deformed by a predetermined amount. The inner peripheral edge of the disc-shaped recording medium is strongly pressed against the engaging claw of the disc table by the reaction force of the body, and the engaging claw is bent toward the center side of the disc table, and the center of the disc table is inserted into the center hole of the disc-shaped recording medium. A ring protrusion is inserted.

  When the centering protrusion of the disc table is inserted into the center hole of the disc-shaped recording medium, the bent engaging claws are elastically restored to engage with the inner periphery of the disc-shaped recording medium. Is held on the disk table and mounted (chucked).

  When the mounting of the disk-shaped recording medium on the disk table is completed, the disk drive unit is moved downward, the disk-shaped recording medium is separated downward from the cover body, and the cover body is elastically restored.

  The disk-shaped recording medium is held on the disk table by an engaging claw, and the disk-shaped recording medium is rotated along with the disk table rotated by a spindle motor, and recording of information signals on the disk-shaped recording medium is performed by driving an optical pickup. Or reproduction is performed.

JP 2000-123516 A

  By the way, the disk drive device is incorporated in various electronic devices such as an audio device, a personal computer, and a disk recorder for recording television. Such disk drive devices tend to be thinner with the demand for thinner electronic devices, and are particularly incorporated into electronic devices with high demands for slimming, such as notebook personal computers. In that case, there is a need for further thinning.

  On the other hand, the disc-shaped recording medium used in the disc drive apparatus as described above may have different thicknesses due to manufacturing errors and differences in standards. For example, the thickness of the disk-shaped recording medium is set to a thickness from 0.9 mm to 1.5 mm according to the standard.

  However, due to such a difference in thickness of the disk-shaped recording medium, the following problems occur in the conventional disk drive device.

  In a disk drive device, a chucking operation is designed based on a thin disk-shaped recording medium, the amount of bending of the cover body during chucking is reduced, and the space between the cover body and other members positioned above it However, in this case, when chucking a thick disc-shaped recording medium, the thicker disc-shaped recording medium is used after chucking. However, there is a possibility that the cover body is pushed up by the disc-shaped recording medium, and the cover body and other members located above the contact body come into contact with each other, thereby hindering the chucking operation.

  On the contrary, in the disk drive device, when the chucking operation is designed on the basis of the thick disk-shaped recording medium and the chucking operation is optimized, the cover body and the cover body are considered in consideration of the large deflection amount of the cover body. It becomes necessary to increase the space with other members located above the device, and it becomes impossible to reduce the thickness.

  Accordingly, it is an object of the present invention to overcome the above-described problems, to optimize the chucking operation, and to reduce the thickness thereof.

  In order to solve the above-described problem, a disk drive device and an electronic apparatus are provided with a disk table on which a disk-shaped recording medium is mounted, a spindle motor that rotates the disk table, and the disk-shaped recording medium mounted on the disk table. A disk drive unit having an optical pickup that is moved in the radial direction and a pickup base that supports the optical pickup so as to be movable in the radial direction of the disk-shaped recording medium, and that is movable in the direction of the rotation axis of the disk table And an outer casing in which the disk drive unit is disposed, a centering protrusion that is inserted into a center hole of the disk-shaped recording medium and centers the disk-shaped recording medium in the disk table, Centered by centering protrusion A table portion on which the inner peripheral portion of the disc-shaped recording medium is placed; and an engaging claw that is positioned on the outer peripheral portion of the centering projection and holds the disc-shaped recording medium by sandwiching it with the table portion. A cover body that is positioned opposite to the pickup base and is elastically deformable on the opposite side of the pickup base with the disk-shaped recording medium mounted on the disk table interposed therebetween, The cover body is provided with a pressing protrusion that is positioned to face the inner peripheral portion of the disk-shaped recording medium mounted on the disk table and protrudes toward the disk-shaped recording medium, and the disk table has the disk In a state where the recording medium is loaded, the disk drive unit is moved in a direction approaching the cover body, and the disk-shaped recording medium is moved. When the pressing projection is pressed by the media, it is provided with a limiter for restricting a certain amount or more displacement in the direction away from the disk drive unit of the cover body.

  Therefore, in the disk drive device and the electronic apparatus, when the thick disk-shaped recording medium is chucked, the limiter restricts a certain amount of movement in the direction approaching the cover of the disk drive unit.

  In the disk drive device or the electronic apparatus described above, a cam slider that has a cam groove that moves the disk drive unit in a substantially rotating shaft direction of the disk table and that moves in a predetermined direction is provided, and the disk table is used as the limiter. A limit lever having an engagement pin that is movable in a substantially rotating axis direction and slidably engaged with a cam groove of the cam slider, and the engagement pin approaches the cover body. It is desirable to provide a limit spring that biases in the direction.

  In such a configuration, when a thick disc-shaped recording medium is chucked, the limit lever is moved against the biasing force of the limit spring, and a certain amount or more moves in the direction approaching the cover body of the disc drive unit. Is regulated.

  Further, in the above-described disk drive device or electronic device, a cam slider that moves the disk drive unit in a substantially rotating shaft direction of the disk table and moves in a predetermined direction is provided, and the cam slider cam An operating pin is provided which is slidably engaged with the groove and moves the cam slider in a direction in which the disk drive unit is moved in the direction of the rotation axis of the disk table. A slit is formed in the operating pin. The operating pin can be elastically deformed in the direction of the rotation axis of the disk table, and the operating pin can be used as the limiter.

  In the configuration using the operating pin as a limiter, the operating pin is elastically deformed when a thick disc-shaped recording medium is chucked, and a certain amount or more of movement in the direction approaching the cover body of the disk drive unit is restricted.

  Further, in the above-described disk drive device or electronic device, a cam slider is provided that has a cam groove that moves the disk drive unit in a substantially rotating shaft direction of the disk table and that moves in a predetermined direction. An operation pin is provided that is slidably engaged with the groove and moves the cam slider in a direction in which the disk drive unit is moved in the direction of the substantial rotation axis of the disk table, and the disk is provided in the cam groove of the cam slider. It is possible to dispose a leaf spring that restricts movement of the drive unit in the direction approaching the cover body, and to use the leaf spring as the limiter.

  In the configuration in which the leaf spring is used as a limiter, the leaf spring is elastically deformed when a thick disc-shaped recording medium is chucked, and movement of a certain amount or more in the direction approaching the cover body of the disc drive unit is restricted.

  Furthermore, in the above-described disk drive device or electronic device, an elastic member is provided that can be elastically deformed in a direction to be in contact with or separated from the recording surface of the disk-shaped recording medium mounted on the disk table as a pressing protrusion of the cover body. The elastic member can be used as the limiter.

  In the configuration in which the elastic member is used as the limiter, the elastic member is elastically deformed when the thick disk-shaped recording medium is chucked, and a certain amount of movement in the direction approaching the cover body of the disk drive unit is restricted.

  In addition, in the above-described disk drive device or electronic device, at least a part of the table portion of the disk table is formed of an elastic body that is elastically deformable in a direction to be in contact with or separated from the recording surface of the disk-shaped recording medium. Can be used as the limiter.

  In the configuration using the elastic body as a limiter, the elastic body is elastically deformed when chucking a thick disc-shaped recording medium, and a certain amount or more of movement in the direction approaching the cover body of the disk drive unit is restricted.

  The disk drive device according to the present invention includes a disk table on which a disk-shaped recording medium is mounted, a spindle motor that rotates the disk table, an optical pickup that is moved in the radial direction of the disk-shaped recording medium mounted on the disk table, and A disk drive unit having a pickup base that supports the optical pickup so as to be movable in a radial direction of the disk-shaped recording medium, and capable of moving in a substantially rotating axis direction of the disk table; and the disk drive unit is disposed therein. A centering protrusion that is inserted into a center hole of the disk-shaped recording medium and centers the disk-shaped recording medium, and the centering is performed by the centering protrusion. The inner periphery of the disc-shaped recording medium And an engaging claw that is located on the outer periphery of the centering protrusion and holds the disc-shaped recording medium by sandwiching it with the table portion, and is mounted on the disc table in the outer casing A cover body that is positioned opposite to the pickup base and elastically deformable is provided on the opposite side of the pickup base with the disk-shaped recording medium interposed therebetween, and the cover body is mounted on the disk table. In the state where the disk-shaped recording medium is mounted on the disk table, the disk-shaped recording medium is provided with a pressing protrusion that faces the inner periphery of the disk-shaped recording medium and protrudes toward the disk-shaped recording medium. The drive unit is moved in a direction approaching the cover body, and the pressing projection is pressed by the disc-shaped recording medium. When the, characterized in that a limiter for restricting a certain amount or more displacement in the direction away from the disk drive unit of the cover body.

  Accordingly, it is possible to appropriately perform the chucking operation of any disk-shaped recording medium having different thicknesses, and to reduce the space outside the cover body, thereby making it possible to reduce the thickness of the disk drive device.

  In the invention described in claim 2, there is provided a cam slider that has a cam groove that moves the disk drive unit in a substantially rotating shaft direction of the disk table and is moved in a predetermined direction. A limit lever having an engagement pin that is movable in the direction of the substantial rotation axis of the disk table and slidably engaged with a cam groove of the cam slider, and the engagement pin is connected to the cover body by the engagement pin. The limit spring that biases in the direction approaching to the limiter is provided, so the limiter configuration is a simple configuration called a limit lever and limit spring. The mechanism is simplified and the chucking operation is optimized and thinned. Can be achieved.

  According to a third aspect of the present invention, there is provided a cam slider that has a cam groove that moves the disk drive unit in a substantially rotating shaft direction of the disk table, and that is moved in a predetermined direction. An operating pin is provided which is slidably engaged with the groove and moves the cam slider in a direction in which the disk drive unit is moved in the direction of the rotation axis of the disk table. A slit is formed in the operating pin. Since the operating pin is elastically deformable in the direction of the rotation axis of the disk table and the operating pin is used as the limiter, it is not necessary to use a dedicated component that functions as a limiter. Simplification can be achieved.

  According to a fourth aspect of the present invention, there is provided a cam slider that has a cam groove that moves the disk drive unit in a substantially rotating shaft direction of the disk table, and that is moved in a predetermined direction. An operation pin is provided that is slidably engaged with the groove and moves the cam slider in a direction in which the disk drive unit is moved in the direction of the substantial rotation axis of the disk table, and the disk is provided in the cam groove of the cam slider. Since a leaf spring that restricts the movement of the drive unit in the direction approaching the cover body is disposed and the leaf spring is used as the limiter, the structure as the limiter is a simple structure called a leaf spring, and has a simple structure In addition, the chucking operation can be optimized and thinned.

  In the invention described in claim 5, an elastic member that is elastically deformable in a direction to be separated from and contacting the recording surface of the disk-shaped recording medium mounted on the disk table as a pressing protrusion of the cover body is provided, Since the elastic member is used as the limiter, the configuration as the limiter is a simple configuration called the elastic member, and the chucking operation can be optimized and thinned with a simple structure.

  In the invention described in claim 6, at least a part of the table portion of the disk table is formed of an elastic body that can be elastically deformed in a direction to be separated from and contacting the recording surface of the disk-shaped recording medium, and the elastic body is formed. Since it is used as the limiter, a part of the structure of the disk table is provided as a limiter, and it does not require a space for exclusive use of the limiter, and the chucking operation is optimized and thinned without increasing the size. Can do.

  An electronic apparatus according to the present invention is an electronic apparatus including a disk drive device that records and / or reproduces an information signal to / from a disk-shaped recording medium, the disk table on which the disk-shaped recording medium is mounted, and the disk A spindle motor that rotates the table, an optical pickup that is moved in the radial direction of the disk-shaped recording medium mounted on the disk table, and a pickup base that supports the optical pickup so as to be movable in the radial direction of the disk-shaped recording medium; And a disk drive unit that is movable in a substantially rotating axis direction of the disk table, and an outer casing in which the disk drive unit is disposed, and the disk table includes a center of the disk-shaped recording medium. Centering the disc-shaped recording medium inserted in the hole Centering projection, a table portion on which the inner periphery of the disc-shaped recording medium centered by the centering projection is placed, and the disc-shaped recording positioned on the outer periphery of the centering projection An engaging claw that holds the medium by sandwiching the medium with the table portion is provided, and the pickup base is disposed on the opposite side of the pickup base with the disk-shaped recording medium mounted on the disk table interposed between the outer casing and the outer casing. A cover body that is positioned facing and elastically deformable is provided, and the disk-shaped recording medium is positioned on the cover body so as to face an inner peripheral portion of the disk-shaped recording medium mounted on the disk table. In the state where the pressing projection protruding to the side is provided, and the disc-shaped recording medium is mounted on the disc table, When the disk drive unit is moved in a direction approaching the cover body and the pressing projection is pressed by the disk-shaped recording medium, the cover body is displaced by a certain amount or more in a direction away from the disk drive unit. It is characterized by providing a limiter that regulates.

  Accordingly, the chucking operation of any disk-shaped recording medium having a different thickness can be performed properly, and the space outside the cover body can be reduced, and the electronic device can be made thinner.

  The best mode of the disk drive device and the electronic apparatus of the present invention will be described below with reference to the accompanying drawings. In the best mode described below, the electronic device of the present invention is applied to a personal computer, and the disk drive device of the present invention is applied to a disk drive device provided in the personal computer.

  The application range of the electronic device and the disk drive device of the present invention is not limited to the personal computer and the disk drive device provided therein, and the electronic device of the present invention includes various electronic devices that handle disk-shaped recording media, For example, the present invention is widely applied to game devices, information terminal devices such as PDAs (Personal Digital Assistants), imaging devices such as still cameras, electronic cameras, and video cameras, recording devices that handle various disc-shaped recording media, and audio devices. The disk drive apparatus of the present invention can be widely applied to disk drive apparatuses that record and / or reproduce information signals on and from disk-shaped recording media handled in these various electronic devices.

  The electronic device (personal computer) 1 includes, for example, a device main body 2 and a display device 3 rotatably supported by the device main body 2, and a keyboard 4 on which necessary operation keys are arranged is provided on the device main body 2. (See FIG. 1). The electronic device 1 may be, for example, a so-called desktop device in which the apparatus main body and the keyboard device are provided separately.

  A disk drive device 5 is built in the device body 2. In the following description of the disk drive device 5, for convenience of explanation, the disk insertion port side described later is the front, the insertion direction of the disk-shaped recording medium with respect to the disk insertion port is the rear, and the user inserts a disk In the state in which the recording medium 100 is inserted, the directions of up, down, front, back, left and right are defined. That is, the F direction shown in FIGS. 1 and 2 is the front, and the R direction is the rear.

  The disk drive device 5 is formed in a flat and substantially rectangular shape, and each required part is arranged in the outer casing 6 (see FIG. 2). The outer casing 6 except for a part, a case body 7 having a shallow box shape opened upward and forward, a cover body 8 for closing the case body 7 from above, and a front panel 9 attached to the front end of the case body 7 Consists of.

  An insertion hole 8 a is formed at the center of the cover body 8. A pressing protrusion 8b that protrudes downward and extends in the circumferential direction is provided immediately outside the insertion hole 8a of the cover body 8.

  A disc insertion slot 9 a is formed in the front panel 9, and the disc insertion slot 9 a is formed in a horizontally long shape corresponding to the shape of the disc-shaped recording medium 100. The disc insertion slot 9a is opened and closed by a shutter (not shown).

  The right end portion of the case body 7 is provided as a support surface portion 10 positioned one step higher than the other portions, and a portion other than the support surface portion 10 is formed as an arrangement recess 11 opened upward (FIGS. 3 to 5). reference).

  An opening 7 a penetrating vertically is formed on the bottom surface of the case body 7. The right opening edge of the opening 7 a is located on the left side of the left edge of the support surface portion 10.

  A chassis 12 is arranged in the arrangement recess 11 of the case body 7 (see FIG. 3). As shown in FIG. 6, the chassis 12 includes a left side portion 13 that is positioned on the left side and is formed long in the front and rear, a right side portion 14 that protrudes rightward from the rear half portion of the left side portion 13, and a front side of the right side portion 14. It comprises a second slider support portion 15 provided to the left and right, and a first slider support portion 16 projecting forward from the right end portion of the second slider support portion 15.

  Slider support holes 12a, 12a extending in the front-rear direction are formed at positions near the left end of the chassis 12 so as to be separated from each other in the front-rear direction. Arc-shaped first lever support holes 12b and 12b are formed in the vicinity of the front slider support hole 12a in the chassis 12, and the first lever support holes 12b and 12b are formed in concentric arc shapes. The chassis 12 is formed with second lever support holes 12c, 12c spaced apart from each other in the left-right direction, and the second lever support holes 12c, 12c are formed in a gentle arc shape protruding leftward. The chassis 12 is formed with third lever support holes 12d and 12d which are spaced apart from each other in the left-right direction, and the third lever support holes 12d and 12d are formed in a circular arc shape protruding rightward. A spring arrangement hole 12e is formed in the chassis 12 between the second lever support holes 12c and 12c.

  The second slider support portion 15 includes a rear surface portion 15a protruding downward from the front edge of the right side portion 14, a bottom surface portion 15b protruding forward from the lower edge of the rear surface portion 15a, and an upper side from the front edge of the bottom surface portion 15b. And a lever support piece portion 15c protruding to the right.

  An operating pin 15d that protrudes backward is provided at the right end of the lever support piece 15c of the second slider support 15. A support pin 15e is provided at the left end of the lever support piece 15c so as to protrude forward. The lever support piece 15c is formed with a pin insertion notch 15f and guide notches 15g and 15g in order from the left side between the operating pin 15d and the support pin 15e.

  The first slider support portion 16 has a bottom surface portion 16a that faces in the vertical direction and a lever support piece portion 16b that protrudes upward from a part of the left edge of the bottom surface portion 16a. The lever support piece portion 16b is provided with support pins 16c and 16c that are separated from each other in the front-rear direction and protrude rightward.

  A support shaft 17 that protrudes upward is provided at a connection portion between the second slider support portion 15 and the first slider support portion 16. A spring hanging piece 18 is provided at a position in the vicinity of the support shaft 17.

  The chassis 12 is provided with spring support pieces 12 f and 12 g at a position immediately to the left of the second slider support 15.

  In the arrangement recess 11 of the case body 7, a drive motor 19 is arranged at a position near the right end in the front end portion (see FIG. 3). A worm (not shown) is fixed to the motor shaft of the drive motor 19.

  A reduction gear group (not shown) formed by engaging a plurality of gears is supported at a position near the drive motor 19. The reduction gear group is meshed with the worm.

  A slider 20 is supported at the right end of the arrangement recess 11 of the case body 7 so as to be movable in the front-rear direction (see FIGS. 3 to 5).

  The slider 20 is formed long in the front-rear direction, and has a rack portion 20a on the left side surface at the front end portion as shown in FIG.

  The slider 20 is provided with a pressing protrusion 20b protruding upward at a position on the rear side of the rack part 20a.

  A shaft sliding groove 21 opened upward is formed in the slider 20 at a position behind the pressing protrusion 20b. The shaft sliding groove 21 includes a front straight portion 21a extending in the front-rear direction, a front skew portion 21b that continues to the rear end of the front straight portion 21a and slopes rightward as it goes rearward, and the front skew portion 21b. A middle straight portion 21c that is continuous with the rear end and extends in the front-rear direction, a rear oblique portion 21d that is continuous with the rear end of the middle straight portion 21c and is inclined to the left as it goes rearward, and the rear oblique portion The rear straight portion 21e is continuous with the rear end of 21d and extends back and forth.

  A switch pressing portion 20c protruding leftward is provided at the rear end of the slider 20.

  The slider 20 is formed with a pressing surface portion 20 d facing the front at a position on the left side of the shaft sliding groove 21. Immediately behind the pressing surface portion 20d of the slider 20, a working groove 20e opened leftward and upward is formed.

  The slider 20 has a rack portion 20a meshed with a reduction gear group. Accordingly, when the driving force of the drive motor 19 is transmitted to the slider 20 via the worm and the reduction gear group, the slider 20 is moved in the front-rear direction according to the rotation direction of the drive motor 19.

  A rotation lever 22 is rotatably supported on the support surface portion 10 of the case body 7 (see FIGS. 3 to 5). As shown in FIG. 8, the pivot lever 22 is provided with a pressed piece 22b that projects downward on the front side of the pivot fulcrum 22a, and projects downward on the rear side of the pivot fulcrum 22a. A pressed shaft 22c is provided. At the rear end portion of the rotating lever 22, a spring hooking protrusion 22d bent downward is provided.

  A torsion coil spring 23 is supported between the rear end of the rotating lever 22 and the case body 7 (see FIG. 23). The torsion coil spring 23 is supported by the support shaft 17 of the case body 7, and both ends thereof are attached to the spring hooking piece 18 of the case body 7 and the spring hooking protrusion 22 d of the rotating lever 22, respectively. The rotating lever 22 is urged clockwise by a torsion coil spring 23 as viewed in plan.

  A load lever 24 is rotatably supported on the support surface portion 10 of the case body 7 (see FIGS. 3 to 5). As shown in FIG. 8, the load lever 24 includes a rotation surface portion 24a and a roller 24b rotatably supported on the front end portion of the rotation surface portion 24a. The rotation surface portion 24a of the load lever 24 is formed with a sliding groove (not shown) opened downward.

  The front end of the rotation lever 22 is slidably supported in the sliding groove of the load lever 24. Therefore, when the turning lever 22 is turned, the load lever 24 is turned along with the turning operation of the turning lever 22.

  The load lever 24 is urged clockwise by the action of the torsion coil spring 23 through the rotating lever 22 when viewed in plan.

  On the lower surface side of the chassis 12, a drive lever 25 that is formed to be substantially right and left is rotatably supported (see FIGS. 3 to 5). As shown in FIG. 9, the drive lever 25 includes a supported surface portion 26 supported by the chassis 12, an extending portion 27 protruding leftward from the supported surface portion 26, and rightward from the supported surface portion 26. The projecting portion 28 is projected.

  An action hole 29 formed in a predetermined shape is formed at the left end of the supported surface portion 26.

  The front edge at the left end portion of the supported surface portion 26 is provided as a pressing portion 26a formed in a substantially arc shape protruding rearward.

  The extended portion 27 is provided with supported pins 27a and 27a that protrude upward and are spaced apart from each other on the left and right. The distal end portion of the extending portion 27 is provided as an action portion 27b that presses a support lever described later during ejection.

  A supported pin 30 protruding downward is provided at the right end of the protruding portion 28.

  The drive lever 25 has a supported pin 30 inserted into a support hole 20 f formed in the rear end portion of the slider 20 and is rotatably connected to the slider 20.

  The drive lever 25 has a substantially central portion of the supported surface portion 26 as a rotation fulcrum with respect to the chassis 12, and supported pins 27a and 27a are inserted into the second lever support holes 12c and 12c, respectively, so that the chassis 12 can rotate. Supported. Since the drive pin 25 is rotatably connected to the slider 20 by a support pin 30 provided at the right end of the projecting portion 28, the drive lever 25 rotates clockwise as viewed in plan when the slider 20 is moved forward. When the slider 20 is moved rearward, the slider 20 is rotated in the counterclockwise direction as viewed in a plan view.

  A centering slider 31 is supported on the lower surface side of the left side portion 13 of the chassis 12 so as to be movable in the front-rear direction (see FIGS. 3 to 5). The centering slider 31 is formed long in the front-rear direction, and a large opening 31a is formed in the front half (see FIG. 10).

  The centering slider 31 is provided with an action protrusion 32 protruding rearward from the front end portion thereof, and the action protrusion 32 is positioned so as to protrude into the opening 31a. The rear end portion of the action protrusion 32 is provided as a lock portion 32a. The edge of the portion near the rear end of the action protrusion 32 is provided as a lock edge 32b formed so as to extend left and right.

  The opening edge of the opening 31a of the centering slider 31 is provided with a tilting action portion 33 that faces diagonally to the left and a linear action portion 34 that protrudes rightward and extends forward and backward at a position near the front end. The tilting action part 33 is located on the front side of the straight action part 34.

  At the rear end of the centering slider 31, a pressed piece 31b that protrudes to the right is provided.

  The centering slider 31 is provided with guided pins 31c and 31c that protrude upward and are separated from each other in the front-rear direction.

  A tension coil spring 35 is supported between the centering slider 31 and a support lever described later (see FIGS. 3 and 5), and the centering slider 31 is biased forward by the tension coil spring 35.

  The centering slider 31 is supported by the chassis 12 so that the guided pins 31c and 31c are inserted into the slider support holes 12a and 12a, respectively, and are movable in the front-rear direction. In the state where the centering slider 31 is supported by the chassis 12, the pressed piece 31b is positioned below the left second lever support hole 12c.

  An eject lever 36 is rotatably supported on the upper surface side of the right side portion 14 of the chassis 12 (see FIGS. 3 to 5).

  The eject lever 36 is formed long in substantially one direction, and has a disk holding portion 37 at one end in the longitudinal direction (see FIG. 11). The disk holding portion 37 is provided with a disk holding pin 37a protruding upward.

  The eject lever 36 is provided with a mounting pin 36a and a regulating pin 36b that protrude downward and are spaced apart in the longitudinal direction.

  The eject lever 36 has a fulcrum at a position near the other end in the longitudinal direction, and an attachment pin 36a and a regulation pin 36b are inserted into the third lever support holes 12d and 12d, respectively, and are rotatably supported by the chassis 12. .

  In a state where the eject lever 36 is supported by the chassis 12, a biasing spring 38 is supported between the other end portion in the longitudinal direction of the eject lever 36 and the rear end portion of the chassis 12, and the eject lever 36 is viewed in a plan view. It is urged clockwise.

  In a state where the eject lever 36 is supported by the chassis 12, a pressed member 39 is attached to the mounting pin 36 a, and the pressed member 39 is positioned on the lower surface side of the chassis 12. The member to be pressed 39 is formed in a flat shape, and as shown in FIG. 12, the switch pressing portion 39a in which a portion excluding a part of the outer peripheral surface is a gently convex curved surface and the switch pressing portion 39a is continuous. It is formed as a pressed portion 39b formed on a gentle convex or concave curved surface.

  In a state where the eject lever 36 is supported by the chassis 12, the regulation pin 36b is inserted into the action hole 29 of the drive lever 25 (see FIG. 5).

  The eject lever 36 is between a standby position where the disc holding unit 37 waits for the disc-shaped recording medium 100 inserted from the disc insertion slot 9a and a drawing position where the disc-shaped recording medium 100 held by the disc holding unit 37 is drawn. Is rotated.

  A support lever 40 is rotatably supported on the upper surface side of the left side portion 13 of the chassis 12 (see FIGS. 3 to 5).

  As shown in FIG. 11, the support lever 40 includes a supported plate portion 41 and an arm portion 42 that protrudes laterally from the supported plate portion 41, and a disk holding portion 43 is provided at the tip of the arm portion 42. Is provided. The disk holding portion 43 is provided with a disk holding pin 43a protruding upward.

  The supported plate portion 41 of the support lever 40 is provided with guided pins 41a and 41a protruding downward.

  The support lever 40 has an end on the opposite side to the end continuous with the arm portion 42 of the supported plate portion 41 as a fulcrum, and the guided pins 41a and 41a are inserted into the first lever support holes 12b and 12b, respectively. The chassis 12 is rotatably supported.

  In the state where the support lever 40 is supported by the chassis 12, as described above, the tension coil spring 35 is supported between the supported plate portion 41 of the support lever 40 and the centering slider 31, and the support lever 40 is viewed in plan view. It is urged clockwise (see FIGS. 3 and 5).

  The support lever 40 is between a standby position where the disc holding unit 43 waits for the disc-shaped recording medium 100 inserted from the disc insertion slot 9a and a drawing position where the disc-shaped recording medium 100 held by the disc holding unit 43 is drawn. Is rotated.

  A centering lever 44 extending in the front-rear direction is supported at the left end portion of the chassis 12 so as to be rotatable about the rear end portion (see FIGS. 3 to 5). The centering lever 44 is positioned along the left side edge of the chassis 12.

  As shown in FIG. 10, a disc holding recess 44 a that opens to the right is formed in the front half of the centering lever 44. At a position near the front end of the centering lever 44, an operated protrusion 44b protruding rightward from its lower end is provided. The operated protrusion 44 b is located on the lower surface side of the chassis 12 through a notch formed in the chassis 12.

  A coil spring 45 is supported between the centering lever 44 and the chassis 12 and, as shown in FIGS. 3 to 5, the centering lever 44 is urged in a direction in which the front end moves substantially to the left.

  A guide member 46 extending in the front-rear direction is attached to the front end portion of the left side surface of the case body 7 (see FIGS. 3 to 5). The guide member 46 is formed with a disc guide recess 46a that opens to the right.

  A cover 47 is attached to the front end portion of the right end portion of the arrangement recess 11 of the case body 7 (see FIGS. 3 to 5), and a worm (not shown) fixed to the motor shaft of the drive motor 19 by the cover 47 and the worm. The meshed reduction gear (not shown) is covered from above.

  As shown in FIGS. 3 to 5, a first cam slider 48 that is long in the front-rear direction is supported on the first slider support portion 16 of the chassis 12 so as to be movable in the front-rear direction. As shown in FIG. 13, a connecting shaft 48 a protruding upward is provided at the rear end of the first cam slider 48.

  The first cam slider 48 is provided with a first support wall 49 and a second support wall 50 that are separated from each other in the left-right direction and face in the left-right direction, except for the rear end portion.

  The first support wall 49 is formed with a guided hole 49a and a pin insertion hole 49b that are separated from each other in the front-rear direction. Both the guided hole 49a and the pin insertion hole 49b are formed long in the front-rear direction, and the vertical width of the pin insertion hole 49b is larger than the vertical width of the guided hole 49a.

  A drive plate 51 is supported on the first cam slider 48 so as to be movable in a predetermined direction. The drive plate 51 includes a base surface portion 52 that is long in the left-right direction, and a pressed pin 53 and a working pin 54 that protrude leftward from both front and rear end portions of the base surface portion 52. The action pin 54 is formed longer than the pressed pin 53 and has a shaft diameter smaller than the vertical width of the pin insertion hole 49 b formed in the first support wall 49 of the first cam slider 48.

  A cam slide hole 55 and a slide hole 56 are formed in the base surface portion 52 of the drive plate 51 so as to be separated from each other in the front-rear direction. The cam sliding hole 55 includes a front horizontal portion 55a extending in the front-rear direction, an inclined portion 55b extending obliquely downward and rearward from the rear end of the front horizontal portion 55a, and a rear side extending continuously in the front-rear direction from the rear end of the inclined portion 55b. And a horizontal portion 55c. The sliding hole 56 is formed long in the front-rear direction.

  The drive plate 51 has a base surface portion 52 inserted between the first support wall 49 and the second support wall 50 and is supported by the first cam slider 48. In the state where the drive plate 51 is supported by the first cam slider 48, the pressed pin 53 is engaged with the front surface of the first support wall 49, and the action pin 54 is a pin formed on the first support wall 49. It is inserted into the insertion hole 49b and protrudes to the left.

  Since the pressed pin 53 is engaged with the front surface of the first support wall 49, the drive plate 51 is moved forward together as the first cam slider 48 moves forward. As described above, since the pin 53 has a shaft diameter smaller than the vertical width of the pin insertion hole 49 b of the first cam slider 48, the dry plate 51 acts on the first cam slider 48. 54 is movable in the direction of moving up and down. The drive plate 51 is also movable in the front-rear direction with respect to the first cam slider 48.

  The first cam slider 48 and the drive plate 51 are supported by the first slider support portion 16 so as to be movable in the front-rear direction. In the first cam slider 48 and the drive plate 51, one support pin 16c provided on the lever support piece portion 16b of the first slider support portion 16 is slidable in the guided hole 49a and the cam slide hole 55. The other support pin 16c is inserted into the guided hole 49a and the slide hole 56 so as to be slidable, and is supported by the first slider support portion 16 so as to be movable in the front-rear direction.

  A second cam slider 57 extending in the left-right direction is supported on the second slider support portion 15 of the chassis 12 so as to be movable in the left-right direction (see FIGS. 3 to 5). A long connecting hole 57a is formed at the right end of the second cam slider 57 in the front-rear direction (see FIG. 13). A coupling groove 57 b is formed at a position near the right end of the second cam slider 57.

  The second cam slider 57 is formed with cam grooves 58 and 58 formed to be separated from each other on the left and right sides, and a connecting groove 59 positioned between the cam grooves 58 and 58.

  As shown in FIG. 14, the cam groove 58 includes a first straight groove portion 58a extending left and right, a first inclined groove portion 58b extending obliquely downward to the left from the left end of the first straight groove portion 58a, and the first straight groove portion 58a. A second linear groove portion 58c that continues to the left end of the inclined groove portion 58b and extends left and right; a second inclined groove portion 58d that extends diagonally downward to the left from the left end of the second linear groove portion 58c; and the second inclined groove portion 58d. It consists of a third inclined groove 58e that extends diagonally upward to the left from the left end, and a third linear groove 58f that continues to the left end of the third inclined groove 58e and extends to the left and right.

  The connecting groove 59 is formed long in the left-right direction.

  The second cam slider 57 is supported by the second slider support portion 15 so as to be movable in the left-right direction. In a state where the second cam slider 57 is supported by the second slider support portion 15, the operation pin 15 d provided on the lever support piece portion 15 c is slidably inserted into the right cam groove 58. The operating pin 15d has a function of moving the second cam slider 57 in the vertical direction.

  A connecting lever 60 is rotatably supported at a portion of the case body 7 located between the first cam slider 48 and the second cam slider 57 (see FIGS. 3 to 5). The connection lever 60 is formed with a fulcrum hole 60a that serves as a pivot point (see FIG. 13). The connecting lever 60 has a long hole-like connecting hole 60b and a connecting shaft 60c projecting downward substantially on the opposite side across the fulcrum hole 60a. The connecting lever 60 is provided with an actuated shaft 60d protruding downward at a position near the connecting hole 60b.

  The connecting lever 60 has a fulcrum hole 60a corresponding to the support shaft 17 provided in the chassis 12, and is rotatably supported by the support shaft 17 by a connecting screw 61 (see FIG. 15). As shown in FIG. 13, in the connecting lever 60, the connecting shaft 60b is slidably inserted into the connecting hole 57a of the second cam slider 57, and the connecting shaft 48a of the first cam slider 48 slides into the connecting hole 60c. It is inserted freely. Therefore, when the first cam slider 48 is moved in the front-rear direction, the connecting lever 60 is rotated with the fulcrum hole 60 a serving as a fulcrum, and as the connecting lever 60 rotates, the second cam slider 57 is moved to the first cam slider 48. In synchronization with the cam slider 48, it is moved to the right or left.

  A limit lever 62 is rotatably supported on the support pin 15 e of the second slider support portion 15 of the chassis 12. The limit lever 62 is formed to be long in a substantially left-right direction, and a substantially central portion is supported by the support pin 15e. At the left end portion of the limit lever 62, a spring hooking recess 62a that is opened upward is formed. An engagement pin 62b that protrudes rearward is provided at the right end of the limit lever 62.

  The engagement pin 62b of the limit lever 62 is slidable in the cam groove 58 on the left side of the second cam slider 58 via a pin insertion notch 15f formed in the lever support piece 15c of the second slider support 15. Inserted. The engagement pin 62b has a function of moving the second cam slider 57 in the vertical direction.

  As described above, the operating pin 15d provided on the lever support piece 15c is slidably inserted into the right cam groove 58 of the second cam slider 57, and the limit lever 62 is engaged with the left cam groove 58. Since the pin 62b is slidably inserted, when the second cam slider 57 is moved in the left-right direction, the positions of the operation pin 15d and the engagement pin 62b with respect to the cam grooves 58, 58 are changed, and the second cam slider 57 is moved. The cam slider 57 is moved in the vertical direction according to the positions of the cam grooves 58 and 58 of the operating pin 15d and the engaging pin 62b.

  Limit springs 63 are supported on the spring support pieces 12f and 12g of the chassis 12 (see FIG. 16). The limit spring 63 is, for example, a torsion coil spring, the coil portion 63a is attached to the spring support piece portion 12g by a press screw 64, one arm portion 63b is engaged with the spring support piece portion 12f from above, and the other The arm 63c is engaged with the spring hanging recess 62a of the limit lever 62 from above. Therefore, the limit lever 62 is urged by the limit spring 63 in the rotation direction (the F direction shown in FIG. 16) in which the engagement pin 62b moves substantially upward.

  As described above, the limit lever 62 is biased by the limit spring 63, and the end on the spring hooking recess 62a side is in contact with the spring support piece 12f. Accordingly, the spring support piece 12 f functions as a stopper that restricts the operation of the limit spring 62 in one rotational direction.

  The limit lever 62 and the limit spring 63 function as a limiter 200 that regulates a certain amount or more of the disk drive unit described later.

  The first slide plate 65 is formed long in the front-rear direction (see FIGS. 13 and 17). The first slide plate 65 is formed with a cam hole 66, a slide hole 67, and a connection hole 68 in order from the front side.

  As shown in FIG. 18, the cam hole 66 includes a first straight portion 66a extending in the front-rear direction, a first inclined portion 66b extending obliquely downward from the rear end of the first straight portion 66a, and the first A second linear portion 66c extending rearward from the rear end of the inclined portion 66b, a second inclined portion 66d extending obliquely upward rearward from the rear end of the second linear portion 66c, and the second inclined portion 66d. And a third straight line portion 66e extending rearward from the rear end.

  The sliding hole 67 is formed long in the front-rear direction.

  The connecting hole 68 is formed long vertically.

  The action pin 54 of the drive plate 51 is slidably inserted into the connection hole 68 of the first slide plate 65. Accordingly, the first slide plate 65 is moved in the front-rear direction together with the first cam slider 48 and the drive plate 51. Moreover, since the connection hole 68 is formed long vertically, the first slide plate 65 and the drive plate 51 are movable in the vertical direction with respect to each other.

  The second slide plate 69 is formed to be long on the left and right (see FIGS. 13 and 17). A coupling piece 69 a that protrudes rearward is provided at the right end of the second slide plate 69. The second slide plate 69 is formed with cam holes 70 and 70 at both left and right ends, and a slide hole 71 is formed at a position between the cam holes 70 and 70.

  As shown in FIG. 19, the cam hole 70 includes a first straight portion 70 a that extends to the left and right, a first inclined portion 70 b that extends obliquely downward to the left from the left end of the first straight portion 70 a, and the first A second straight portion 70c extending leftward from the left end of the inclined portion 70b, a second inclined portion 70d extending obliquely leftward from the left end of the second straight portion 70c, and a left end of the second inclined portion 70d And a third straight portion 70e extending leftward from the left side.

  The sliding hole 71 is formed long on the left and right.

  The second slide plate 69 has a coupling piece 69 a coupled to the coupling groove 57 b of the second cam slider 57. Accordingly, the second slide plate 69 is moved in the left-right direction together with the second cam slider 57.

  As shown in FIGS. 3 to 5, the rear end portion of the pickup unit 72 is moved substantially up and down to the position on the front side of the second slider support portion 15 of the chassis 12 in the arrangement recess 11 of the case body 7. It is supported so as to be rotatable in a direction (movable up and down). The pickup unit 72 includes a pickup base 73 and an optical pickup 74 that is supported by the pickup base 73 so as to be movable in the radial direction of the disc-shaped recording medium 100.

  On the outer peripheral surface of the pickup base 73, connection pins 73a and 73a protruding rightward and connection pins 73b and 73b protruding rearward are provided (see FIGS. 13, 15 and 17).

  The connecting pins 73a and 73a are slidably connected to the sliding holes 67 of the first slide plate 65, and the connecting pins 73b and 73b are connected to the connecting groove 59 and the second slider support portion of the second cam slider 57, respectively. 15 guide cutouts 15g and 15g are slidably connected. Therefore, as described above, since the second cam slider 57 is moved in the up / down direction along with the movement in the left / right direction, the pickup base 73 is moved to the rear side in accordance with the movement of the second cam slider 57 in the up / down direction. The end portion is rotated (lifted / lowered) in a direction in which the end portion is moved substantially vertically.

  On the outer peripheral surface of the pickup base 73, pin insertion holes 73c, 73c, 73c are formed at positions in front of the connection pins 73a, 73a and positions on the left and right sides of the connection pins 73b, 73b, respectively.

  The pickup base 73 is provided with an arrangement hole 73d that is vertically penetrated for arranging an optical pickup 74 and a spindle motor to be described later (see FIG. 15).

  A motor unit 75 is supported on the first slide plate 65 and the second slide plate 69 (see FIGS. 3 to 5). As shown in FIG. 20, the motor unit 75 includes a motor mounting base 76, a spindle motor 77 disposed on the motor mounting base 76, and a disk table 78 rotated by the spindle motor 77.

  A disk drive unit 79 for driving the disk-shaped recording medium 100 is constituted by the pickup base 73 and the motor unit 75, and the disk drive unit 79 operates the respective members such as the first cam slider 48 and the second cam slider 57. Is moved up and down.

  The disc table 78 is fixed to the motor shaft of the spindle motor 77, has a center ring projection 78a at the center, and a table portion 78b on which the disc-shaped recording medium 100 is placed on the outer peripheral side of the center ring projection 78a. Is provided. Engaging claws 78c, 78c, and 78c are provided on the outer peripheral portion at the upper end of the centering protrusion 78a so as to be spaced apart in the circumferential direction. The engaging claws 78c, 78c, 78c can be elastically deformed in a direction in which the engaging claws 78c, 78c, 78c are separated from and contacted with the center of the center ring protrusion 78a.

  The motor mounting base 76 includes a base plate 80 and a mounting plate 81 supported on the base plate 80.

  The base plate 80 includes a support plate portion 82 facing in the vertical direction and a side plate portion 83 protruding upward from the front and right side edges of the support plate portion 82. The side plate portion 83 is provided with shaft-shaped connecting shafts 83a, 83b, 83b protruding outward. The connecting shaft 83a protrudes rightward, and the connecting shafts 83b and 83b protrude rearward while being separated from each other in the left-right direction.

  The mounting plate 81 is formed by integrally forming a motor mounting portion 81a formed in a substantially disc shape and a supported portion 81b positioned outside the motor mounting portion 81a. The mounting plate 81 is positioned with the motor mounting portion 81a protruding laterally from the base plate 80, the supported portion 81b is positioned on the supporting plate portion 82, and a compression coil spring (not shown) between the supporting plate portion 82 and the mounting plate 81. Is supported by the base plate 80 in a state of being interposed. Since the mounting plate 81 is supported by the base plate 80 with the compression coil spring interposed therebetween, the mounting plate 81 can be displaced in the vertical direction with respect to the base plate 80 and is supported by the base plate 80 while being biased upward. Is done.

  A spindle motor 77 is mounted on the motor mounting portion 81 a of the mounting plate 81.

  The motor unit 75 is disposed at a position corresponding to the rear end of the pickup base 73, and the disk table 78 protrudes upward from the arrangement hole 73d (see FIG. 15). The connecting shafts 83a, 83b, 83b provided on the side plate portion 83 of the motor unit 75 protrude outward from the pin insertion holes 73c, 73c, 73c of the pickup base 73, respectively.

  As shown in FIG. 13, the connecting shaft 83a is slidably engaged with the cam hole 66 of the first slide plate 65, and the connecting shafts 83b and 83b are respectively connected to the cam hole 70 of the second slide plate 69. 70 is slidably engaged. Accordingly, when the first slide plate 65 and the second slide plate 69 are moved in the front-rear direction or the left-right direction and the positions of the connecting shafts 83a, 83b, 83b with respect to the cam holes 66, 70, 70 are changed, the motor unit 75 is moved. Is moved up and down.

  Both the pickup unit 72 and the motor unit 75 are moved in the vertical direction, and are moved up and down together during the movement. Therefore, the upper surface of the mounting plate 81 of the motor mounting base 76 is in contact with the lower surface of the pickup base 73 when being moved up and down integrally. Even when the disk-shaped recording medium 100 is mounted on the disk table 78, the upper surface of the mounting plate 81 of the motor mounting base 76 is in contact with the lower surface of the pickup base 73.

  At this time, since the motor mounting base 76 is configured so that the mounting plate 81 can be displaced with respect to the base plate 80 by a compression coil spring, the upper surface of the mounting plate 81 is pressed in a state of being in surface contact with the lower surface of the pickup base 73. . Therefore, the contact state of the mounting plate 81 with respect to the pickup base 73 can be stabilized.

  A circuit board (not shown) is disposed below the chassis 12 and, as shown in FIG. 5, a start switch 84 and detection switches 85 and 86 are mounted on the circuit board. The start switch 84 is positioned at a substantially central portion in the left-right direction of the arrangement recess 11 of the case body 7, and the detection switches 85 and 86 are positioned apart from each other in a position near the right end of the arrangement recess 11. The start switch 84 and the detection switches 85 and 86 are all disposed behind the pickup unit 72.

  Hereinafter, the operation of the disk drive device 5 at the time of loading and ejecting the disk-shaped recording medium 100 will be described (see FIGS. 21 to 42). In the following description, the rotation direction of each part will be described based on the R1-R2 directions shown in each drawing. The R1 direction is a clockwise direction when viewed in a plane, and the R2 direction is a counterclockwise direction when viewed in a plane.

  First, an initial state that is a state of each part before the disc-shaped recording medium 100 is inserted from the disc insertion opening 9a of the front panel 9 will be described (see FIGS. 21 to 23).

  As shown in FIG. 21, the slider 20 is positioned at the rear moving end, and the pressed shaft 22 c of the rotating lever 22 is engaged with the front linear portion 21 a of the shaft sliding groove 21. At this time, the rotation lever 22 is positioned near the rotation end in the R2 direction, and the load lever 24 connected to the rotation lever 22 is also positioned near the rotation end in the R2 direction.

  The switch pressing portion 20c of the slider 20 is in a state where the detection switch 86 located on the rear side is operated.

  Since the slider 20 is positioned at the rear moving end, the drive lever 25 is positioned at the rotating end in the R2 direction.

  The centering slider 31 is positioned at the front moving end by the biasing force of the tension coil spring 35 supported between the centering slider 31 and the support lever 40.

  The eject lever 36 is in a standby position that is a rotation end in the R1 direction by the biasing force of the biasing spring 38 supported between the ejector lever 36 and the restricting pin 36b at the front end of the action hole 29 of the drive lever 25. Is located. At this time, a part of the eject lever 36 is positioned above the table portion 78 b of the disc table 78 and above the pickup base 73, and the disc holding portion 37 is positioned forward and to the right of the center ring protrusion 78 a of the disc table 78. ing.

  The pressed member 39 attached to the eject lever 36 is in a state in which the switch pressing portion 39a operates the start switch 84. At this time, the drive motor 19 is not activated.

  The support lever 40 is in a standby position which is a rotation end in the R1 direction by the urging force of the tension coil spring 35 supported between the support lever 40 and the one of the guided pins 41a is a lock edge of the centering slider 31. It is engaged with the portion 32b and held at the rotation end in the R1 direction. At this time, the arm portion 42 of the support lever 40 is located above the pickup base 73, and the disc holding portion 43 is located in front of the center ring protrusion 78 a of the disc table 78 and to the left. The disc holding portion 43 of the support lever 40 is located on the front side of the disc holding portion 37 of the eject lever 36.

  In the centering lever 44, the linearly acting portion 34 of the centering slider 31 is engaged with the operated protrusion 44b from the left, and the R2 direction against the urging force of the coil spring 45 supported between the centering lever 44 and the chassis 12. Is located at the pivot end.

  The first cam slider 48, the drive plate 51, and the first slide plate 65 are positioned at the rear moving end, and the action pin 54 of the drive plate 51 is connected to the connection hole of the first slide plate 65 as shown in FIG. 68 is engaged at a position near the upper end. At this time, the support pins 16c and 16c provided in the first slider support portion 16 are passed through the guided holes 49a of the first cam slider 48, and the front end portions of the cam slide holes 55 of the drive plate 51 and the slide holes, respectively. 56 is engaged with the front end portion.

  The second cam slider 57 and the second slide plate 69 are located at the left moving end (see FIG. 23). At this time, the operating pin 15 d provided on the second slider support portion 15 is engaged with the first linear groove portion 58 a of the right cam groove 58 of the second cam slider 57. Further, the engaging pin 62 b of the limit lever 62 is engaged with the first linear groove portion 58 a of the left cam groove 58 of the second cam slider 57. Accordingly, the second cam slider 57 is positioned at the lower moving end.

  In the pickup unit 72, the connection pins 73a and 73a are engaged with the slide holes 67 of the first slide plate 65 (see FIG. 22), and the connection pins 73b and 73b are the slide holes 71 of the second slide plate 69, The guide notches 15g and 15g of the second slider support portion 15 and the connecting groove 59 of the second cam slider 57 are engaged (see FIG. 23) and tilted in a rearwardly lowered state.

  In the motor unit 75, the connecting shaft 83a is engaged with the first straight portion 66a in the cam hole 66 of the first slide plate 65 (see FIG. 22), and the connecting shafts 83b and 83b are respectively connected to the second slide plate 69. The cam hole 70 is engaged with the first straight portions 70a and 70a (see FIG. 23) and is held at a position near the lower moving end. At this time, the motor mounting base 76 of the motor unit 75 is positioned separately below the pickup base 73 of the pickup unit 72.

  In the initial state described above, when the disc-shaped recording medium 100 is manually inserted from the disc insertion opening 9a of the front panel 9, as shown in FIG. It contacts the disk holding pin 43 a of the disk holding part 43 and is held by the disk holding part 43. The support lever 40 is rotated in the R2 direction when the disk holding pin 43a is pressed by the disk-shaped recording medium 100.

  When the disc-shaped recording medium 100 is inserted into and ejected from the disc insertion slot 9a, the outer circumference of the disc-shaped recording medium 100 is guided by being brought into sliding contact with the disc guide recess 46a of the guide member 46 and moved in the front-rear direction. To go.

  The disc-shaped recording medium 100 inserted from the disc insertion slot 9 a contacts the roller 24 b of the load lever 24, and the load lever 24 resists the biasing force of the torsion coil spring 23 as the disc-shaped recording medium 100 is inserted. Is rotated in the R2 direction. At this time, with the rotation of the load lever 24, the rotation lever 22 is also rotated in the R2 direction.

  As shown in FIG. 25, the disc-shaped recording medium 100 has an outer peripheral surface that contacts a disc holding pin 37a of the disc holding portion 37 of the eject lever 36, and a disc holding portion 43 of the support lever 40 and a disc holding portion 37 of the eject lever 36. Held by both. The eject lever 36 is rotated in the R2 direction when the disc holding pin 37a is pressed by the disc-shaped recording medium 100.

  When the disc-shaped recording medium 100 is inserted from the disc insertion opening 9a, the disc-shaped recording medium 100 is inserted into the disc holding portions 37 and 43 positioned in front of the centering protrusion 78a of the disc table 78 as described above. Retained.

  Therefore, since the disc-shaped recording medium 100 is held by the disc holding portions 37 and 43 positioned on the left and right in front of the centering protrusion 78a, the disc-shaped recording medium 100 is inclined in a rearwardly lowered state with respect to the horizontal state. Even when the disc-shaped recording medium 100 has been inserted, the disc-shaped recording medium 100 does not come into contact with the disc table 78 or the pickup base 73, and the disc-shaped recording medium 100 can be prevented from being damaged.

  In the disk drive device 5, the disk-shaped recording medium 100 inserted from the disk insertion slot 9 a is first held by the disk holding part 43 of the support lever 40, and then the disk holding part 37 of the eject lever 36. However, conversely, first, the positions of both are changed so that they are held by the disc holding portion 37 of the eject lever 36 and then held by the disc holding portion 43 of the support lever 40. Alternatively, the positions of the both may be set so that the disc holding portion 43 of the support lever 40 and the disc holding portion 37 of the eject lever 36 are simultaneously held.

  When the disc-shaped recording medium 100 is further inserted and moved backward, the center of the disc-shaped recording medium 100 is moved rearward from the roller 24b of the load lever 24 as shown in FIG. The load lever 24 is rotated in the R1 direction by the urging force of the coil spring 23, and the disc-shaped recording medium 100 is pressed backward by the roller 24b. At this time, the eject lever 36 and the support lever 40 are rotated in the R2 direction when the disk holding pins 37a and 43a are pressed against the disk-shaped recording medium 100.

  When the eject lever 36 is rotated in the R2 direction, the regulation pin 36b is moved through the action hole 29 of the drive lever 25.

  When the eject lever 36 is rotated in the R2 direction and the disc-shaped recording medium 100 is rotated to a predetermined position, the operation of the activation switch 84 by the switch pressing portion 39a of the pressed member 39 is released as shown in FIG. Then, the drive motor 19 is rotated in one direction (forward rotation direction).

  After the drive motor 19 is activated, the disc-shaped recording medium 100 is loaded by the driving force of the drive motor 19, so that the user does not need to insert the disc-shaped recording medium 100 manually.

  When the drive motor 19 is rotated, the driving force is transmitted to the slider 20, and the slider 20 is moved forward. When the slider 20 is moved forward by the rotation of the drive motor 19, the operation on the detection switch 86 by the switch pressing portion 20c of the slider 20 is released.

  When the slider 20 is moved forward, the pressed piece 22b of the rotating lever 22 is pressed by the pressing protrusion 20b, and the rotating lever 22 and the load lever 24 are rotated in the R1 direction (see FIG. 26). ). Accordingly, the disc-shaped recording medium 100 is pressed rearward by the roller 24 b of the load lever 24, and the disc-shaped recording medium 100 is moved rearward by the driving force of the driving motor 19.

  As the slider 20 moves forward, the drive lever 25 is rotated in the R1 direction.

  When the slider 20 continues to move forward, as shown in FIG. 27, the pressing protrusion 20 b is separated forward from the pressed piece 22 b, and the pressed shaft 22 c of the rotating lever 22 slides on the axis of the slider 20. In the groove 21, it is moved relatively from the front linear portion 21a to the front oblique portion 21b while sliding.

  When the pressed shaft 22c is moved relatively to the front skew portion 21b, the rotating lever 20 continues to rotate in the R1 direction, and the load lever 24 also rotates in the R1 direction, so that the disc-shaped recording medium 100 is rotated. It is moved further backwards.

  When the slider 20 is further moved forward by the drive motor 19, the disc-shaped recording medium 100 is pressed by the roller 24b of the load lever 24 and further moved backward (see FIG. 28). The disc-shaped recording medium 100 is moved to the rear side of the guide member 46, is slidably brought into contact with the disc holding recess 44a of the centering lever 44, and is moved rearward.

  In the rotating lever 22, the pressed shaft 22c is relatively moved in the shaft sliding groove 21 of the slider 20 from the front skew portion 21b to the middle linear portion 21c. Therefore, as shown in FIG. 28, the rotation of the rotation lever 22 and the load lever 24 is stopped, and the disc-shaped recording medium 100 has a center ring in which the center hole 100a is located immediately above the center ring protrusion 78a of the disc table 78. Stopped at position. At this time, the disc-shaped recording medium 100 is held from the outer peripheral side by the roller 24b of the load lever 24, the disc holding pin 37a of the eject lever 36, the disc holding pin 43a of the support lever 40, and the disc holding recess 44a of the centering lever 44. .

  Since the rotation of the load lever 24 is stopped at the centering position, the rotation of the eject lever 36 and the support lever 40 is also stopped.

  The drive motor 19 continues to rotate in the forward direction, and the slider 20 is moved forward. Due to the forward movement of the slider 20, the pressed shaft 22 c of the rotating lever 22 is moved relatively rearward along the middle linear portion 21 c of the shaft sliding groove 21.

  As the slider 20 moves forward, the first cam slider 48 is pushed forward by the pressing surface portion 20d of the slider 20, and as shown in FIG. 29, the first cam slider 48, the drive plate 51, and the first cam slider 48 are moved. The slide plate 65 is moved forward as a unit. At the same time, the connecting lever 60 that connects the first cam slider 48 and the second cam slider 57 is rotated, and as shown in FIG. 30, the second cam slider 57 and the second slide plate are rotated. 69 moves as a unit to the right.

  When the second cam slider 57 is moved to the right, as shown in FIG. 30, the operating pin 15d provided on the second slider support portion 15 and the engaging pin 62b of the limit lever 62 are respectively connected to the cam groove. 58 and 58 are relatively moved from the first linear groove portions 58a and 58a to the second linear groove portions 58c and 58c via the first inclined groove portions 58b and 58b. Accordingly, the second cam slider 57 is moved upward.

  At this time, in the pickup unit 72, the connection pins 73b and 73b are relatively moved toward the left through the slide hole 71 of the second slide plate 69, but the connection is performed by the upward movement of the second cam slider 57. Since the pins 73b and 73b are respectively guided to the guide notches 15g and 15g of the second slider support portion 15, the pickup unit 72 is moved upward.

  At the same time, when the first cam slider 48 is moved forward together with the drive plate 51, as shown in FIG. 29, the support pin 16c located on the front side provided in the first slider support portion 16 is moved. The guided hole 49a of the first cam slider 48 and the front horizontal portion 55a of the cam sliding hole 55 of the drive plate 51 are moved relatively rearward and positioned on the rear side provided in the first slider support portion 16. The supporting pin 16c is moved rearward relative to the guided hole 49a of the first cam slider 48 and the sliding hole 56 of the drive plate 51. Accordingly, the first cam slider 48 and the drive plate 51 are not moved in the vertical direction.

  At this time, as shown in FIG. 29, the connecting pins 73a and 73a of the pickup unit 72 are moved into the sliding hole 67 by the movement of the first slide plate 65 that is moved forward together with the first cam slider 48. Is moved backward relatively. The first slide plate 65 is moved upward as the pickup unit 72 moves. By the movement of the first slide plate 65, the action pin 54 of the drive plate 51 is moved relatively downward through the connecting hole 68 of the first slide plate 65.

  At the same time, in the motor unit 75, the connecting shaft 83a is relatively moved through the cam hole 66 of the first slide plate 65 from the first straight portion 66a to the second straight portion 66c via the first inclined portion 66b ( 29), the connecting shafts 83b and 83b are connected to the cam holes 70 and 70 of the second slide plate 69 from the first straight portions 70a and 70a through the first inclined portions 70b and 70b, respectively. , 70c (see FIG. 30). At this time, as described above, the second cam slider 57 is moved upward, but the upward movement amount is determined by the first linear portions 66a, 70a, 70a and the second linear portions 66c, 70c, Since the distance in the vertical direction of 70c is substantially the same, the connecting shafts 83a, 83b, 83b connect the cam holes 66, 70, 70 from the first straight portions 66a, 70a, 70a to the second straight portions 66c, 70c. , 70c, the motor unit 75 is not moved in the vertical direction.

  By the forward movement of the slider 20, the first cam slider 48, the drive plate 51, and the first slide plate 65 are further moved forward (see FIG. 31), and the second cam slider 57 and the second slide plate are moved. 69 is further moved to the right (see FIG. 32).

  When the second cam slider 57 is further moved rightward, as shown in FIG. 32, the operating pin 15d provided on the second slider support portion 15 and the engaging pin 62b of the limit lever 62 are respectively camped. The second straight groove portions 58c and 58c of the grooves 58 and 58 are relatively moved to the lower end. Accordingly, the second cam slider 57 is moved upward.

  At this time, in the pickup unit 72, the connection pins 73b and 73b are relatively moved toward the left through the slide hole 71 of the second slide plate 69, but the connection is performed by the upward movement of the second cam slider 57. Since the pins 73b and 73b are respectively guided to the guide notches 15g and 15g of the second slider support portion 15, the pickup unit 72 is moved upward.

  At the same time, when the first cam slider 48 is moved forward together with the drive plate 51, as shown in FIG. 31, the support pin 16c located on the front side provided in the first slider support portion 16 is moved. The guided hole 49a of the first cam slider 48 and the front horizontal portion 55a of the cam sliding hole 55 of the drive plate 51 are moved relatively rearward and positioned on the rear side provided in the first slider support portion 16. The supporting pin 16c is moved rearward relative to the guided hole 49a of the first cam slider 48 and the sliding hole 56 of the drive plate 51. Accordingly, the first cam slider 48 and the drive plate 51 are not moved in the vertical direction.

  At this time, as shown in FIG. 31, the connecting pins 73a and 73a of the pickup unit 72 are moved into the sliding hole 67 by the movement of the first slide plate 65 that is moved forward together with the first cam slider 48. Is moved backward relatively. The first slide plate 65 is moved upward as the pickup unit 72 moves. By the movement of the first slide plate 65, the action pin 54 of the drive plate 51 is moved relatively downward through the connecting hole 68 of the first slide plate 65.

  At the same time, in the motor unit 75, the connecting shaft 83a is relatively moved through the cam hole 66 of the first slide plate 65 from the second straight portion 66c to the third straight portion 66e via the second inclined portion 66d ( 31), the connecting shafts 83b and 83b are respectively connected to the cam holes 70 and 70 of the second slide plate 69 from the second straight portions 70c and 70c through the second inclined portions 70d and 70d and the third straight portions 70e. , 70e (see FIG. 32). Accordingly, the motor unit 75 is moved upward, and the disc-shaped recording medium 100 is pushed up by the centering projection 78 a of the disc table 78, so that the inner peripheral portion of the disc-shaped recording medium 100 is provided on the cover body 8. It is pressed against the part 8b.

  As shown in FIG. 33, the cover body 8 to which the disk-shaped recording medium 100 is pressed from below is once bent, but the reaction force is applied to the disk-shaped recording medium 100 as a downward pressing force, and the disk-shaped recording medium 100 is pressed. The engaging claws 78c, 78c, 78c of the disk table 78 are elastically deformed by the pressing force applied to the recording medium 100, and the centering protrusion 78b is fitted into the center hole 100a of the disk-shaped recording medium 100 (FIG. 34). reference). When the centering protrusion 78b is fitted into the center hole 100a of the disc-shaped recording medium 100, the elastically deformed engaging claws 78c, 78c, 78c are elastically restored, and the center hole 100a of the disc-shaped recording medium 100 is restored. Engaged with the upper opening edge, the disc-shaped recording medium 100 is chucked and held by the disc table 78.

  At this time, the following different operations are performed depending on the thickness of the disc-shaped recording medium 100 inserted from the disc insertion slot 9a.

  When the thin disc-shaped recording medium 100 is chucked, when the disc-shaped recording medium 100 is pushed up by the centering protrusion 78a of the disc table 78, as shown in FIG. For example, even when the other member 1000 of the electronic apparatus 1 exists above, the upper surface of the cover body 8 is not in contact with the other member 1000, and the limit lever 62 is not operated.

  On the other hand, when the thick disc-shaped recording medium 100 is chucked, it is bent when the disc-shaped recording medium 100 is pushed up by the centering protrusion 78a of the disc table 78 as shown in FIG. The cover 8 thus formed is more easily displaced upward than the case where the thickness of the disc-shaped recording medium 100 is small because the thickness of the disc-shaped recording medium 100 is large. Therefore, for example, when the other member 1000 of the electronic device 1 exists above the cover body 8, the upper surface of the cover body 8 may be in contact with the other member 1000.

  If the upper surface of the cover body 8 comes into contact with the other member 1000, the cover body 8 moves to the other member 1000 with a large force due to the motor unit 75 rising when the disk-shaped recording medium 100 is chucked to the disk table 78. There is a possibility of being pressed. In this case, if the upward movement of the motor unit 75 is allowed, there is a risk of causing problems such as damage or malfunction of each mechanism of the disk-shaped recording medium 100 and the disk drive device 5.

  Therefore, in the disk drive device 5, when the disk-shaped recording medium 100 is chucked to the disk table 78, the following operation is performed to prevent the occurrence of the above-described problems (FIG. 37). reference).

  When the disc-shaped recording medium 100 is chucked, if the inner peripheral portion of the disc-shaped recording medium 100 is strongly pressed from below onto the pressing projection 8b of the cover body 8 by the ascending of the motor unit 75, the disc-shaped recording medium 100 starts to disc table. 78, a motor unit 75 having connecting shafts 83b and 83b, a second slide plate 69 to which the connecting shafts 83b and 83b are engaged, a second cam slider 57 to which the second slide plate 69 is connected, Force is transmitted in sequence to a limit lever 62 having an engagement pin 62b engaged with a cam groove 58 of the second cam slider 57 and a limit spring 63 biasing the limit lever 62, and the limit spring 63 is The limit force 62 is elastically deformed by absorbing the transmitted force, and the engaging pin 62b of the limit lever 62 moves substantially downward. It is rotated in a direction which is (a state before the rotation of the limit lever 62 shown by the two-dot chain line in FIG. 37.). Therefore, the disc-shaped recording medium 100 does not rise any further, and further bending of the cover body 8 is restricted.

  The slider 20 continues to move forward, and the first cam slider 48, the drive plate 51, and the first slide plate 65 are moved further forward by the forward movement of the slider 20 (see FIG. 38), and the second The cam slider 57 and the second slide plate 69 are further moved to the right (see FIG. 39).

  When the second cam slider 57 is moved further to the right, as shown in FIG. 39, the operating pin 15d provided on the second slider support portion 15 and the engaging pin 62b of the limit lever 62 are respectively camped. The grooves 58 and 58 are relatively moved from the lower end of the second inclined groove portions 58d and 58d to the third linear groove portions 58f and 58f via the third inclined groove portions 58e and 58e. Accordingly, the second cam slider 57 is moved downward.

  At this time, in the pickup unit 72, the connecting pins 73b and 73b are relatively moved leftward with respect to the slide hole 71 of the second slide plate 69, but are connected by the downward movement of the second cam slider 57. Since the pins 73b and 73b are respectively guided to the guide notches 15g and 15g of the second slider support portion 15, the pickup unit 72 is moved downward.

  At the same time, when the first cam slider 48 is moved forward together with the drive plate 51, as shown in FIG. 38, the support pin 16c located on the front side provided in the first slider support portion 16 is moved. The guided hole 49a of the first cam slider 48 is moved relatively rearward and is relatively moved from the front horizontal portion 55a of the cam slide hole 55 of the drive plate 51 to the rear horizontal portion 55c via the inclined portion 55b. The support pin 16c, which is moved rearward and is located on the rear side of the first slider support portion 16, relatively moves behind the guided hole 49a of the first cam slider 48 and the slide hole 56 of the drive plate 51. Moved to.

  At this time, as shown in FIG. 38, the connecting pins 73a and 73a of the pickup unit 72 are moved into the sliding hole 67 by the movement of the first slide plate 65 that is moved forward together with the first cam slider 48. Is moved backward relatively. The first slide plate 65 is moved downward as the pickup unit 72 moves. By the movement of the first slide plate 65, the action pin 54 of the drive plate 51 is moved relatively upward through the connection hole 68 of the first slide plate 65.

  At the same time, in the motor unit 75, the connecting shaft 83a is moved rearward relative to the third straight portion 66e of the cam hole 66 of the first slide plate 65 (see FIG. 38), and the connecting shafts 83b and 83b are respectively The second straight plate portions 70e and 70e of the cam holes 70 and 70 of the second slide plate 69 are relatively moved leftward (see FIG. 39). Accordingly, the motor unit 75 is moved downward by the second slide plate 69 moved downward along with the second cam slider 57.

  At this time, as described above, the support pin 16c located on the front side provided in the first slider support portion 16 is relatively moved from the front horizontal portion 55a to the rear horizontal portion 55c of the cam slide hole 55 of the drive plate 51. Therefore, as shown in FIG. 38, the drive plate 51 is operated so that the pressed pin 53 moves substantially upward with respect to the first cam slider 48. In the drive plate 51, the pressed pin 53 rides on the upper surface of the front end portion of the first support wall 49 of the first cam slider 48, and the first cam slider 48 and the drive plate 51 are separated from each other. Even if the cam slider 48 moves forward, the drive plate 51 is not moved forward. Accordingly, the first slide plate 65 is not pushed forward by the action pin 54 of the drive plate 51, and the first slide plate 65 is not moved forward.

  Since the forward movement of the first slide plate 65 is stopped, the connecting shaft 83a of the motor unit 75 is stopped at the third linear portion 66e of the cam hole 66 of the first slide plate 65.

  When the drive plate 51 is operated so that the pressed pin 53 moves substantially upward with respect to the first cam slider 48, the first cam slider 48 and the drive plate 51 are separated as described above. Thereafter, the first cam slider 48 is moved forward by a forward movement of the slider 20 by a predetermined amount, and the second cam slider 57 and the second slide plate 69 are respectively moved by a predetermined amount. As one cam slider 48 moves, it moves to the right. At this time, due to the rightward movement of the second slide plate 69, the connection pins 73b and 73b of the pickup unit 72 are moved to the left relative to the slide hole 71 and the connection shafts 83b and 83b of the motor unit 75 are moved. Are moved to the left relative to the third straight portions 70e and 70e in the cam holes 70 and 70, respectively, so that the pickup unit 72 and the motor unit 75 are not raised or lowered.

  At this time, when the slider 20 is moved forward, the pressed shaft 22c of the rotating lever 22 passes from the middle straight portion 21c of the shaft sliding groove 21 through the rear oblique portion 21d as shown in FIG. The rear linear portion 21e is moved relatively rearward. Accordingly, the rotation lever 22 and the load lever 24 are rotated in the R2 direction, and the roller 24b of the load lever 24 is separated outward from the outer peripheral surface of the disc-shaped recording medium 100.

  At the same time, the drive lever 25 is rotated in the R1 direction by the forward movement of the slider 20, the restriction pin 36b of the eject lever 36 is pressed substantially rearward by the opening edge of the action hole 29, and the disc holding pin 37a of the eject lever 36 Is separated outward from the outer peripheral surface of the disc-shaped recording medium 100, and the eject lever 36 reaches the retracted position. The eject lever 36 is locked in the retracted position when the regulation pin 36 b is engaged with the opening edge of the action hole 29.

  At the same time, the driven piece 25b of the centering slider 31 is pressed backward by one of the supported pins 27a of the drive lever 25 by the rotation of the drive lever 25 in the R1 direction by the forward movement of the slider 20, The ring slider 31 is moved backward. When the centering slider 31 is moved rearward, the lock portion 32 a of the operation protrusion 32 is engaged with one of the guided pins 41 a of the support lever 40 and the linear operation portion 34 is operated by the centering lever 44. It is spaced apart from the portion 44b. Accordingly, the support lever 40 is rotated in the R2 direction and the centering lever 44 is rotated in the R1 direction by the biasing force of the coil spring 45, so that the disk holding pin 43a and the centering lever 44 of the support lever 40 are connected to the disk-shaped recording medium. The outer peripheral surface of 100 is spaced outward. The support lever 40 is locked at the retracted position when the disk holding pin 43a is engaged with the lock portion 32a. The centering lever 44 is locked at a position separated from the disc-shaped recording medium 100 by the tilting action portion 33 being engaged with the acting protrusion 44b from the right side.

  As described above, the holding of the disc-shaped recording medium 100 by the roller 24b of the load lever 24, the disc holding pin 37a of the eject lever 36, the disc holding pin 43a of the support lever 40 and the centering lever 44 is released and the disc table 78 is released. When the disk-shaped recording medium 100 is chucked by the above, the disk-shaped recording medium 100 can be rotated.

  At this time, the detection switch 85 is operated by the switch pressing portion 20c of the slider 20 moved forward, and the rotation of the drive motor 19 is stopped.

  The disc-shaped recording medium 100 is rotated as the disc table 78 is rotated by the rotation of the spindle motor 77, and information signals are recorded or reproduced by driving the optical pickup 74.

  The pickup unit 72 and the motor unit 75 are coupled in the middle of the raising / lowering operation, and the motor unit 75 and the pickup unit 72 are coupled at least when information signals are recorded or reproduced on the disk-shaped recording medium 100. The proper positional relationship between the pickup unit 72 and the motor unit 75 can be ensured in the information signal recording / reproducing mode for the recording medium 100.

  As described above, in the disk drive device 5, the pickup unit 72 and the motor unit 75 are operated (lifted / lowered) separately, so that the pickup unit 72 and the motor unit 75 are operated within their respective desired ranges. Therefore, the disk drive device 5 can be made thinner and the degree of design freedom can be improved.

  When the recording or reproduction of the information signal with respect to the disc-shaped recording medium 100 is completed, the rotation of the drive motor 19 in the reverse direction is started by the user's operation on an eject button (not shown).

  When the drive motor 19 is rotated in the reverse direction, the slider 20 is moved rearward, and the outer peripheral surface of the disc-shaped recording medium 100 is again held by the roller 24b of the load lever 24 and the disc of the eject lever 36 by the reverse operation. It is held by the pin 37 a, the disk holding pin 43 a of the support lever 40 and the centering lever 44.

  At this time, the drive lever 25 is rotated in the R2 direction by the rearward movement of the slider 20, the engagement of the supported pin 27a of the drive lever 25 with the pressed piece portion 31b of the centering slider 31 is released, and the centering slider 31 is moved to the front moving end by the urging force of the tension coil spring 35, and the centering slider 31 is moved forward, so that the lock on the support lever 40 by the lock portion 32a of the action protrusion 32 is released, and the centering slider 31 is moved. The inclination acting part 33 is disengaged from the acting protrusion 44 b and the linear acting part 34 is engaged with the acting protrusion 44 b, so that the centering lever 44 is rotated in the R 2 direction by the biasing force of the coil spring 45. The

  Subsequently, the chucking of the disc-shaped recording medium 100 with respect to the disc table 78 is released by the rearward movement of the first cam slider 48 due to the rearward movement of the slider 20 and the leftward movement of the second cam slider 57. Is done.

  The movement of the first cam slider 48 and the second cam slider 57 is performed when the actuated shaft 60d of the coupling lever 60 that couples the first cam slider 48 and the second cam slider 57 is pressed backward by the opening edge of the working groove 20e in the slider 20. Is called. At this time, the first cam slider 48 is moved rearward with respect to the drive plate 51 and the first slide plate 65 immediately after the rearward movement starts, and the drive plate 51 is an upper surface of the front end portion of the first support wall 49. The pressed pin 53 that has been ridden on is moved so as to move substantially downward, and the pressed pin 53 is again engaged with the front side of the first support wall 49.

  Release of chucking of the disc-shaped recording medium 100 is performed when the disc-shaped recording medium 100 is held by the load lever 24, the disc holding portion 37 of the eject lever 36, the disc holding portion 43 of the support lever 40, and the centering lever 44. When the motor unit 75 is lowered and the lower surface of the disk-shaped recording medium 100 comes into contact with the pickup base 73, the disk-shaped recording medium 100 is peeled off from the centering protrusion 78a of the disk table 78.

  When the pickup unit 72 and the motor unit 75 are lowered and the chucking of the disc-shaped recording medium 100 is released, the ejection operation from the disc insertion opening 9a of the disc-shaped recording medium 100 is performed, and the slider 20 is continuously moved backward. The

  Due to the backward movement of the slider 20, the drive lever 25 is rotated in the R2 direction, and a pressed member attached to the lower surface side of the eject lever 36 by a pressing portion 26a formed on the supported surface portion 26 of the drive lever 25. The pressed portion 39a of 39 is pressed substantially forward, the eject lever 36 is rotated in the R1 direction, and the disc-shaped recording medium 100 is pushed forward by the disc holding pin 37a. As the disc-shaped recording medium 100 is moved forward, a part of the disc-shaped recording medium 100 is projected forward from the disc insertion opening 9a (see FIG. 41).

  At this time, the drive lever 25 is rotated in the R2 direction, the pressed portion 39a of the pressed member 39 is pressed forward by the pressing portion 26a of the drive lever 25, and the eject lever 36 is rotated in the R1 direction.

  When the slider 20 is further moved rearward, the disc-shaped recording medium 100 is further pushed forward by the eject lever 36, and when the eject lever 36 reaches the standby position, the disc holding pin 37a presses the disc-shaped recording medium 100. finish. At this time, the support lever 40 is rotated in the R1 direction by the urging force of the tension coil spring 35 to follow the forward movement of the disc-shaped recording medium 100, and the rotation lever 22 and the load lever 24 are driven by the roller 24b of the load lever 24. The disk-shaped recording medium 100 is rotated while being in contact with the outer peripheral surface.

  When the eject lever 36 is rotated to the standby position, the start switch 84 is operated again by the switch pressing portion 39a of the pressed member 39.

  Subsequently, the slider 20 is moved rearward, and the guide pin 41a of the support lever 40 is pushed substantially forward by the action portion 27b provided in the extending portion 27 of the drive lever 25 by the rotation of the drive lever 25 in the R2 direction. (See FIG. 42). Accordingly, the disc-shaped recording medium 100 is moved forward by being pressed by the disc holding pin 43a of the support lever 40.

  When the detection switch 86 positioned on the rear side is operated by the switch pressing portion 20c due to the backward movement of the slider 20, the rotation of the drive motor 19 is stopped and the backward movement of the slider 20 is stopped.

  The user can take out the disc-shaped recording medium 100 from the disc drive device 5 by holding the portion protruding from the disc insertion slot 9a.

  Note that the backward movement of the slider 20 is stopped by operating the detection switch 86 by the switch pressing portion 20c of the slider 20. This stop position is set behind the position in the initial state (see FIG. 21). Yes. In the disk drive device 5, after the ejection operation of the disk-shaped recording medium 100 is completed and the slider 20 is stopped at the rear moving end, the drive motor 19 is rotated again in the forward rotation direction, and each part is in an initial state ( The program is set so as to return to FIG. 21 to FIG.

  As described above, in the disk drive device 1, the pressing protrusion 8 b provided on the cover body 8 of the outer casing 6 during the chucking operation of the disk-shaped recording medium 100 has the inner peripheral portion of the disk-shaped recording medium 100. The limit lever 62 and the limit spring 63 functioning as a limiter 200 when the pressure is applied to the cover member 8 restricts the amount of deflection of the cover body 8 when the thick disc-shaped recording medium 100 is chucked.

  Therefore, in the disk drive device 5, the chucking operation of any disk-shaped recording medium 100 having a different thickness can be properly performed, and the space above the cover body 8 can be reduced. Can be achieved.

  Further, since the disk drive device 5 uses a simple configuration of the limit lever 62 and the limit spring 63 as the limiter 200, the chucking operation is optimized and thinned after simplifying the mechanism. Can be achieved.

  In the above, the limit lever 62 and the limit spring 63 are used as the limiter 200. However, the limiter is not limited to the limit lever 62 and the limit spring 63, and various kinds of modifications as shown in the following modifications. It is possible to use a limiter.

  When the limiters according to the following modifications are used in place of the limiter 200, the lever support piece portion 15c of the second slider support portion 15 of the chassis 12 is formed on the right side formed on the second cam slider 57. An operating pin 15 d similar to the operating pin 15 d engaged with the cam groove 58 is provided, and the operating pin 15 d is slidably engaged with the left cam groove 58 formed in the second cam slider 57.

  First, a limiter 200A according to a first modification will be described (see FIGS. 43 and 44).

  Slits 87 and 87 are formed in the operation pins 15d and 15d of the chassis 12 (see FIG. 43), and the slits 87 and 87 can be used as the limiter 200A according to the first modification.

  The slits 87 and 87 are formed to extend in the left-right direction.

  When the operation pins 15d and 15d having the slits 87 and 87 functioning as the limiter 200A are used, as shown in FIG. 44, the disc-shaped recording is performed during the chucking operation of the thick disc-shaped recording medium 100. When the inner peripheral portion of the medium 100 is strongly pressed against the pressing projection 8b of the cover body 8 from below, the reaction force from the cover body 8 causes the disc-shaped recording medium 100, the motor unit 75, the second slide plate 69, and the like. The force is transmitted to the operating pins 15d and 15d via the second cam slider 57, and the operating pins 15d and 15d absorb the transmitted force and are elastically deformed. Therefore, the disc-shaped recording medium 100 does not rise any further, and further bending of the cover body 8 is restricted.

  When the slits 87 and 87 formed in the operating pins 15d and 15d are used as the limiter 200A, the limiter 200A has a simple configuration. Therefore, the disk drive device 5 performs a chucking operation after simplifying the mechanism. Can be optimized and thinned.

  In addition, when the slits 87 and 87 formed in the operating pins 15d and 15d are used as the limiter 200A, it is not necessary to use a dedicated part that functions as a limiter, so that the number of parts can be reduced and the mechanism can be simplified. Can do.

  Next, a limiter 200B according to a second modification will be described (see FIGS. 45 and 46).

  Plate springs 88 and 88 are respectively disposed in the cam grooves 58 and 58 of the second cam slider 57 with which the operating pins 15d and 15d are slidably engaged (see FIG. 45). It can be used as the limiter 200B according to the second modification. The leaf springs 88 are disposed on the upper side of the cam grooves 58 and 58, respectively, and are disposed at least in the second inclined groove portions 68d and 58d.

  When the plate springs 88 and 88 functioning as such a limiter 200B are used, as shown in FIG. 46, during the chucking operation of the thick disk-shaped recording medium 100, the inner peripheral portion of the disk-shaped recording medium 100 Is pressed strongly against the pressing projection 8b of the cover body 8 from below, the reaction force from the cover body 8 causes the disc-shaped recording medium 100, the motor unit 75, the second slide plate 69, and the second cam slider 57. Is transmitted to the leaf springs 88 and 88, and the leaf springs 88 and 88 are elastically deformed by absorbing the transmitted force. Therefore, the disc-shaped recording medium 100 does not rise any further, and further bending of the cover body 8 is restricted.

  When the leaf springs 88, 88 are used as the limiter 200B, the structure of the limiter 200B is simple. Therefore, in the disk drive device 5, the mechanism is simplified and the chucking operation is optimized and thinned. Can be planned.

  Next, a limiter 200C according to a third modification will be described (see FIGS. 47 and 48).

  The pressing protrusion 8b provided on the cover body 8 can be used as an elastic member 89 (see FIG. 47), and the elastic member 89 can be used as the limiter 200C according to the third modification. The elastic member 89 is made of, for example, an annular rubber material.

  When such an elastic member 89 functioning as the limiter 200C is used, as shown in FIG. 48, the inner peripheral portion of the disk-shaped recording medium 100 covers the chucking operation of the thick disk-shaped recording medium 100 as shown in FIG. When strongly pressed against the elastic member 89 of the body 8 from below, the elastic member 89 is elastically deformed by absorbing the force when the elastic member 89 is pressed. Therefore, the disc-shaped recording medium 100 does not rise any further, and further bending of the cover body 8 is restricted.

  When the elastic member 89 is used as the limiter 200C, the inner peripheral portion of the disc-shaped recording medium 100 is pressed against the cover body 8 from below even during the chucking operation of the thin disc-shaped recording medium 100. The elastic member 89 is sometimes elastically deformed, but the deformation amount of the elastic member 89 is small and the bending of the cover body 8 is not restricted.

  When the elastic member 89 is used as the limiter 200C, the structure of the limiter 200C is simple. Therefore, in the disk drive device 5, the mechanism is simplified and the chucking operation is optimized and thinned. Can do.

  Next, a limiter 200D according to a fourth modification will be described (see FIGS. 49 and 50).

  The table portion 78b of the disc table 78 can be used as the elastic body 90 (see FIG. 49), and the elastic body 90 can be used as the limiter 200D according to the fourth modification. The elastic body 90 is made of, for example, a substantially annular rubber material.

  When such an elastic body 90 functioning as the limiter 200D is used, as shown in FIG. 50, during the chucking operation of the thick disc-shaped recording medium 100, the inner peripheral portion of the disc-shaped recording medium 100 is covered. When strongly pressed against the pressing protrusion 8b of the body 8 from below, the reaction force from the cover body 8 is transmitted to the elastic body 90, and the elastic body 90 is elastically deformed by absorbing the transmitted force. Therefore, the disc-shaped recording medium 100 does not rise any further, and further bending of the cover body 8 is restricted.

  In the above example, the entire table portion 78b of the disk table 78 is provided as the elastic body 90. However, the portion provided as the elastic body may be a part of the table portion 78b, for example, as shown in FIG. As described above, it is possible to provide the outer peripheral portion of the table portion 78b as the elastic body 90A so that the elastic body 90A functions as the limiter 200D.

  When the elastic bodies 90 and 90A are used as the limiter 200D, the structure of the limiter 200D is simple. Therefore, in the disk drive device 5, the mechanism is simplified and the chucking operation is optimized and thinned. Can be planned.

  Further, when the elastic bodies 90 and 90A are used as the limiter 200D, a part of the structure of the disk table 78 is provided as the limiter 200D, so that a dedicated arrangement space for the limiter 200D is not required and the disk drive device 5 It is possible to optimize the chucking operation and reduce the thickness without increasing the size.

  In the above-described chucking operation of the disc-shaped recording medium 100, when the motor unit 75 is moved upward, the upper end portion of the centering projection 78a of the disc table 78 is formed in the insertion hole formed in the cover body 8. There is a possibility of protruding upward from 8a. For example, when the thickness of the disc-shaped recording medium 100 mounted on the disc table 78 is thin, or when the motor unit 75 is moved upward without the disc-shaped recording medium 100 mounted on the disc table 78, etc. In addition, the upper end portion of the center ring protrusion 78a may protrude upward from the insertion hole 8a.

  In such a case, the centering protrusion 78a may collide with another member 1000 located above the cover body 8, and the centering protrusion 78a may be damaged or damaged.

  Therefore, in the disk drive device 5, for example, as shown in FIG. 52, a protrusion 300 is provided on the upper surface of the centering protrusion 78a so as to avoid contact with the other member 1000 of the centering protrusion 78a. be able to. The protrusion 300 can be provided, for example, by causing the motor shaft of the spindle motor 77 to protrude upward from the center ring protrusion 78a.

  Further, instead of the protrusion 300, for example, as shown in FIG. 53, the other member 1000 is provided with a protrusion 1001 protruding downward that can contact the motor shaft of the spindle motor 77, and the centering protrusion 78a. Contact with other members 1000 can be avoided.

  The specific shapes and structures of the respective parts shown in the above-described best mode are merely examples of the implementation of the present invention, and the technical scope of the present invention is limited by these. It should not be interpreted in a general way.

2 to 53 show the best mode for carrying out the present invention, and this figure is a perspective view of an electronic device. FIG. 1 is a perspective view showing a disk drive device and a disk-shaped recording medium. 1 is an exploded perspective view of a disk drive device. 1 is a perspective view showing a disk drive device. 1 is a schematic plan view showing a disk drive device. It is an expansion disassembled perspective view which shows a chassis and a limit lever. It is an expansion perspective view of a slider. It is an expansion perspective view which shows a rotation lever and a load lever. It is an expansion disassembled perspective view which shows a drive lever and a part of slider. It is an expansion disassembled perspective view which shows a centering slider and a centering lever. It is an expansion disassembled perspective view which shows an eject lever, a support lever, and a to-be-pressed member with a part of chassis. It is an enlarged plan view of a member to be pressed. It is an expansion disassembled perspective view which shows each member, such as a cam slider, with a part of chassis. It is an expansion perspective view of the 2nd cam slider. FIG. 2 is an enlarged perspective view showing parts such as a cam slider, a pickup unit, and a motor unit, with a part of the chassis exploded. It is an expansion perspective view which shows a limiter etc. It is an expansion disassembled perspective view which shows a slide plate, a pickup unit, and a motor unit. It is an expansion perspective view which shows a 1st slide plate. It is an expansion perspective view which shows a 2nd slide plate. It is an expansion perspective view which shows a motor unit. FIG. 22 to FIG. 42 show the operation of the disk drive apparatus, and this figure is a schematic plan view showing an initial state. It is a general | schematic expanded side view which shows the initial state of a 1st cam slider. It is a general | schematic expanded side view which shows the initial states of a 2nd cam slider. FIG. 6 is a schematic plan view showing a state where insertion of a disc-shaped recording medium from a disc insertion opening is started. FIG. 25 is a schematic plan view showing a state in which rotation of the drive motor in the normal rotation direction is started following FIG. 24. It is a schematic plan view which shows the state by which the to-be-pressed piece part of a rotation lever is pressed by the press part of a slider. FIG. 27 is a schematic plan view showing a state where the pressed shaft of the rotating lever is pressed by the pressing portion of the slider, following FIG. 26. FIG. 26 is a schematic plan view showing a state where the centering of the disc-shaped recording medium is completed following FIG. 25. FIGS. 30 to 39 show the state of the pickup unit, the motor unit, and the like when the disk-shaped recording medium is chucked. This figure shows the first cam slider and the like immediately after the chucking operation is started. It is a schematic side view which shows a state of a part in cross section. It is a schematic side view which shows the state of the 2nd cam slider etc. immediately after a chucking operation | movement is started. FIG. 30 is a schematic side view showing the state of the first cam slider and the like when the chucking operation of the disc-shaped recording medium is performed following FIG. 29. FIG. 31 is a schematic side view showing a state of the second cam slider and the like when the chucking operation of the disc-shaped recording medium is performed following FIG. 30. FIG. 6 is a schematic side view showing a state in which a disc-shaped recording medium is in contact with a pressing protrusion and a cover body is bent in a part of a cross section. FIG. 34 is a schematic side view showing a state in which the disk-shaped recording medium is chucked, partially in section, following FIG. 33. FIG. 3 is a schematic side view showing a state of a cover body or the like partially in cross section when a thin disc-shaped recording medium is chucked. It is a schematic side view showing a state of a cover body or the like when a thick disc-shaped recording medium is chucked with a part thereof in cross section. FIG. 5 is a schematic side view showing a state in which a limiter absorbs a force when a thick disc-shaped recording medium is chucked, partially in cross section. FIG. 32 is a schematic side view showing a state of the first cam slider and the like when the chucking operation of the disc-shaped recording medium is completed and the disc drive unit is lowered following FIG. 31. FIG. 33 is a schematic side view showing the state of the second cam slider and the like when the chucking operation of the disk-shaped recording medium is completed and the disk drive unit is lowered following FIG. FIG. 6 is a schematic plan view showing a state when the chucking of the disc-shaped recording medium is completed and the recording medium is at a position where recording and reproduction are possible. It is a schematic plan view which shows the state in the middle of eject operation being performed. It is a schematic plan view which shows the state which eject operation was completed. FIG. 44 shows a limiter according to a first modified example together with FIG. 44, and is a schematic enlarged side view showing a part of the structure of the limiter in cross section. It is a general | schematic expanded side view which shows a part of operation | movement of a limiter in cross section. FIG. 46 shows a limiter according to a second modified example together with FIG. 46, and is a schematic enlarged side view showing a part of the structure of the limiter in cross section. It is a general | schematic expanded side view which shows operation | movement of a limiter. FIG. 48 shows a limiter according to a third modified example together with FIG. 48, and is a schematic enlarged side view showing a part of the structure of the limiter in cross section. It is a general | schematic expanded side view which shows a part of operation | movement of a limiter in cross section. FIG. 50 and FIG. 51 show a limiter according to a fourth modification, and this figure is a schematic enlarged cross-sectional view showing the configuration of the limiter. It is a general | schematic expanded sectional view which shows the operation | movement of a limiter. It is a general | schematic expanded sectional view which shows another structure of a limiter. It is a general | schematic expanded sectional view which shows the example in which the protrusion was provided in the upper surface of the center ring protrusion. It is a general | schematic expanded sectional view which shows the example by which the protrusion was provided in the other member.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 100 ... Disc-shaped recording medium, 100a ... Center hole, 1 ... Electronic device, 5 ... Disk drive apparatus, 6 ... Outer casing, 8 ... Cover body, 8b ... Pressing protrusion, 15d ... Actuation pin, 57 ... Second cam Slider, 58 ... Cam groove, 62 ... Limit lever, 73 ... Pickup base, 74 ... Optical pickup, 77 ... Spindle motor, 78 ... Disc table, 78a ... Center ring protrusion, 78b ... Table portion, 78c ... Engagement claw, 79 ... Disc drive unit, 83b ... Connecting shaft, 87 ... Slit, 88 ... Leaf spring, 89 ... Elastic member, 90 ... Elastic body, 90A ... Elastic body, 200 ... Limiter, 200A ... Limiter, 200B ... Limiter, 200C ... Limiter , 200D ... Limiter

Claims (7)

A disk table on which a disk-shaped recording medium is mounted, a spindle motor that rotates the disk table, an optical pickup that is moved in the radial direction of the disk-shaped recording medium mounted on the disk table, and the optical pickup is recorded on the disk-shaped recording medium. A disk drive unit that has a pickup base that is movably supported in the radial direction of the medium, and is movable in the direction of the substantial rotation axis of the disk table;
An outer casing in which the disk drive unit is disposed,
A centering projection that is inserted into a center hole of the disc-shaped recording medium and centers the disc-shaped recording medium on the disc table, and an inner peripheral portion of the disc-shaped recording medium that is centered by the centering projection Provided with a table portion, and an engaging claw that is located on the outer peripheral portion of the centering protrusion and holds the disc-shaped recording medium by sandwiching it with the table portion,
The outer casing is provided with a cover body which is positioned opposite to the pickup base and elastically deformed on the opposite side of the disk-shaped recording medium mounted on the disk table,
The cover body is provided with a pressing protrusion that is positioned opposite to an inner peripheral portion of the disk-shaped recording medium mounted on the disk table and protrudes toward the disk-shaped recording medium,
When the disk drive unit is moved in a direction approaching the cover body in a state where the disk-shaped recording medium is mounted on the disk table, the cover body is pressed when the pressing protrusion is pressed by the disk-shaped recording medium. A disc drive apparatus comprising: a limiter for restricting a certain amount of displacement in a direction away from the disc drive unit. Provided with a cam slider that has a cam groove that moves the disk drive unit in the direction of the rotation axis of the disk table and that moves in a predetermined direction;
As the limiter,
A limit lever having an engagement pin that is movable in the direction of the substantial rotation axis of the disk table and is slidably engaged with a cam groove of the cam slider;
The disk drive device according to claim 1, further comprising a limit spring that urges the limit lever in a direction in which the engagement pin approaches the cover body. A cam slider having a cam groove for moving the disk drive unit in a substantially rotating shaft direction of the disk table and moving in a predetermined direction;
An operating pin is provided that is slidably engaged with a cam groove of the cam slider and moves the cam slider in a direction in which the disk drive unit is moved in the direction of the substantial rotation axis of the disk table;
A slit is formed in the operating pin so that the operating pin can be elastically deformed in the direction of the rotation axis of the disk table,
The disk drive device according to claim 1, wherein the operating pin is used as the limiter. A cam slider having a cam groove for moving the disk drive unit in a substantially rotating shaft direction of the disk table and moving in a predetermined direction;
An operating pin is provided that is slidably engaged with a cam groove of the cam slider and moves the cam slider in a direction in which the disk drive unit is moved in the direction of the substantial rotation axis of the disk table;
A leaf spring that restricts movement of the disk drive unit in the direction approaching the cover body is disposed in the cam groove of the cam slider,
The disk drive device according to claim 1, wherein the leaf spring is used as the limiter. An elastic member that is elastically deformable in a direction to be in contact with and separated from the recording surface of the disk-shaped recording medium mounted on the disk table as a pressing protrusion of the cover body;
The disk drive device according to claim 1, wherein the elastic member is used as the limiter. Forming at least a part of the table portion of the disk table by an elastic body that is elastically deformable in a direction to be in contact with and separated from the recording surface of the disk-shaped recording medium;
The disk drive device according to claim 1, wherein the elastic body is used as the limiter. An electronic device including a disk drive device that records or reproduces information signals on a disk-shaped recording medium, or both,
A disk table on which a disk-shaped recording medium is mounted, a spindle motor that rotates the disk table, an optical pickup that is moved in the radial direction of the disk-shaped recording medium mounted on the disk table, and the optical pickup is recorded on the disk-shaped recording medium. A disk drive unit that has a pickup base that is movably supported in the radial direction of the medium, and is movable in the direction of the substantial rotation axis of the disk table;
An outer casing in which the disk drive unit is disposed,
A centering protrusion that is inserted into a center hole of the disk-shaped recording medium and centers the disk-shaped recording medium in the disk table, and an inner peripheral portion of the disk-shaped recording medium that is centered by the centering protrusion. Provided with a table portion, and an engaging claw that is located on the outer peripheral portion of the centering protrusion and holds the disc-shaped recording medium by sandwiching it with the table portion,
The outer casing is provided with a cover body that is positioned opposite to the pickup base and elastically deformed on the opposite side of the pickup base across the disk-shaped recording medium mounted on the disk table,
The cover body is provided with a pressing protrusion that is positioned opposite to an inner peripheral portion of the disk-shaped recording medium mounted on the disk table and protrudes toward the disk-shaped recording medium,
When the disk drive unit is moved in a direction approaching the cover body in a state where the disk-shaped recording medium is mounted on the disk table, the cover body is pressed when the pressing protrusion is pressed by the disk-shaped recording medium. An electronic device comprising a limiter that restricts a certain amount of displacement in a direction away from the disk drive unit.

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