JP4692838B2 - Disk drive device and electronic device - Google Patents

Description

  The present invention relates to the technical field of disk drive devices and electronic equipment. More particularly, the present invention relates to a technical field in which a disc receiving member that is movable in a predetermined direction supported by an eject lever is provided to improve the reliability of a loading operation and an ejecting operation on a disc-shaped recording medium.

  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, when a disk-shaped recording medium is inserted from a disk insertion slot, for example, a part of the disk-shaped recording medium is inserted and held in a holding recess formed in a rotatable eject lever. Then, the disk-shaped recording medium is loaded by the disk loading mechanism while the disk-shaped recording medium presses the eject lever. The loaded disk-shaped recording medium is mounted on a disk table, and information signals can be recorded or reproduced on the disk-shaped recording medium. The disc-shaped recording medium on which the recording or reproduction of the information signal has been completed is ejected by being pushed by the eject lever and partially protruding from the disc insertion slot.

JP 2005-85449 A

  By the way, the above-mentioned eject lever passes on the base chassis on which the mechanical chassis and the disk table on which required parts are arranged are arranged at the time of rotation. Therefore, when the eject lever rotates during ejection, the eject lever may enter the gap between the mechanical chassis and the base chassis or the gap between the base chassis and the disk table, which may hinder the operation of the eject lever. is there.

  On the other hand, when the disc-shaped recording medium is inserted from the disc insertion slot, a part of the disc-shaped recording medium is inserted into the holding recess formed on the eject lever, but good insertability into the holding recess of the disc-shaped recording medium. Therefore, it is necessary to improve the reliability of the loading operation of the disk-shaped recording medium.

  Accordingly, it is an object of the present invention to overcome the above-described problems and to improve the reliability of the loading operation and the ejecting operation for the disk-shaped recording medium.

In order to solve the above-described problems, the disk drive device and the electronic device of the present invention include a disk table on which a disk-shaped recording medium inserted and loaded from a disk insertion slot is mounted, and a disk table fixed to the motor shaft. A spindle motor for rotating the disk table, a base chassis to which the spindle motor is fixed and movable in a substantially axial direction of the spindle motor, a mechanical chassis for supporting the base chassis so as to be movable in a substantially axial direction of the spindle motor, and insertion A slide cam that supports the disc-shaped recording medium and is moved on the base chassis and the mechanical chassis, and a slider that moves the disc-shaped recording medium, and the slider is formed long in the front-rear direction. And plate-shaped cam plate Made, spaced possible guide means from the base chassis when the eject of the disc-shaped recording medium is provided with guiding the inserted disc-shaped recording medium from the disk insertion port, which is inserted from the disk insertion opening in the support member disc A pressing projection that presses the recording medium from the thickness direction of the disk-shaped recording medium, the guide means is provided at a position facing the pressing projection, and the operating portion is slidable on the mechanical chassis when the support member is moved. A disc-shaped recording medium inserted from a disc insertion slot, and a guide projection piece that functions as the guide means; and a supported portion that is supported by the support member and that connects the guide projection piece and the action portion. A disc receiving member is provided to be held together with the pressing protrusion of the guide, and the guide protruding piece holds the disc receiving member attached to the support member. A pressing member is provided for pressing in a direction away from the piece. When the disc-shaped recording medium is ejected, the guide receiving piece of the disc receiving member is passed over the mechanical chassis, the base chassis and the disc table. When the disc passes through the mechanical chassis, the disk receiving member moves in the direction in which the guide protrusion approaches the pressing protrusion against the pressing force of the pressing member while contacting the mechanical chassis. The action portion is separated from the mechanical chassis when passing, and the disc receiving member is moved by the pressing member in a direction in which the guide protruding piece is separated from the pressing protruding piece.

  Therefore, in the disk drive device and the electronic apparatus of the present invention, the guide means can be separated from the base chassis during ejection.

The disk drive device according to the present invention includes a disk table on which a disk-shaped recording medium inserted through a disk insertion slot is loaded, a spindle motor that is fixed to a motor shaft and rotates the disk table, and a spindle motor. A base chassis that is fixed and movable in a substantially axial direction of the spindle motor, a mechanical chassis that supports the base chassis so as to be movable in a substantially axial direction of the spindle motor, and a base chassis that supports an inserted disk-shaped recording medium And a support member moved on the mechanical chassis, and a slider for moving the disk-shaped recording medium, the slider is formed by combining a slide cam formed long in the front-rear direction and a plate-shaped cam plate, Insert the disc inserted from the disc insertion slot. Separation can guide means from the base chassis when the eject of the disc-shaped recording medium is provided with guiding the disk-shaped recording medium, a disc-shaped recording medium inserted from a disk insertion opening to the support member of the disc-shaped recording medium A pressing protrusion that is pressed from the thickness direction is provided, the guide means is provided at a position facing the pressing protrusion, an action portion that can slide on the mechanical chassis when the support member moves, and a guide protrusion that functions as the guiding means. A disc receiving member having a piece and a supported portion that is supported by the support member and connects the guide projection piece and the action portion, and holds the disc-shaped recording medium inserted from the disc insertion slot together with the pressing projection piece of the eject lever A holding member which is attached to the support member and holds the disc receiving member in a direction in which the guide protruding piece is separated from the protruding piece. When the disc-shaped recording medium is ejected, the disc receiving member has a guide projection piece that passes over the mechanical chassis, the base chassis, and the disc table, and the ejecting projection portion passes through the disc table during ejection. The disk receiving member is moved in the direction in which the guide protrusion approaches the pressing protrusion against the pressing force of the pressing member in contact with the chassis. The disc receiving member is moved by the separated holding member in a direction in which the guide protruding piece is separated from the holding protruding piece .

Therefore, the guide means does not enter the gap between the disk table and the base chassis, and the reliability of the ejection operation of the disk-shaped recording medium by the eject lever can be improved. In addition, the disc-shaped recording medium inserted from the disc insertion slot can be reliably held by the guide means and the pressing protrusion, and a reliable ejection operation can be achieved with a simple configuration.

In the invention described in claim 2 , since the tip of the guide projection piece of the disc receiving member is brought into contact with the base chassis when the disc-shaped recording medium is inserted from the disc insertion slot, A large opening is formed between the guide projection piece and the outer periphery of the disc-shaped recording medium, and the disc-shaped recording medium can be reliably held by the eject lever.

The electronic apparatus of the present invention is an electronic apparatus provided with a disk drive device that records and / or reproduces information signals on / from a disk-shaped recording medium, and is loaded by loading from a disk insertion slot. A disk table on which a medium is mounted, a spindle motor that is fixed to a motor shaft and rotates the disk table, a base chassis that is fixed to the spindle motor and is movable in a substantially axial direction, and the base chassis A mechanical chassis that supports the spindle motor movably in the axial direction, a support member that supports the inserted disk-shaped recording medium and moves on the base chassis and the mechanical chassis, and moves the disk-shaped recording medium And the slider is A slide cam that is long in the rear direction and a plate-shaped cam plate are combined to guide the disk-shaped recording medium inserted from the disk insertion slot and to be separated from the base chassis when the disk-shaped recording medium is ejected. Provided with a pressing projection that presses the disc-shaped recording medium inserted from the disc insertion opening into the support member in the thickness direction of the disc-shaped recording medium, and the guiding device faces the pressing projection. An action portion that is provided at a position and is slidable on the mechanical chassis when the support member is moved; a guide protrusion that functions as the guide means; and a supported portion that is supported by the support member and connects the guide protrusion and the action portion. And a disc receiving member for holding the disc-shaped recording medium inserted from the disc insertion slot together with the pressing protrusion of the eject lever. In addition, a holding member is provided that is attached to the support member and presses the disk receiving member in a direction in which the guide protruding piece is separated from the pressing protruding piece. When the guide protrusion is passed over the disk table during ejection, the action portion contacts the mechanical chassis and the guide protrusion of the disk receiving member is pressed against the pressing force of the pressing member. When the guide projection piece passes through the disk table during ejection, the action part is separated from the mechanical chassis and the disc receiving member is moved in a direction in which the guide projection piece is separated from the press projection piece by the holding member. It is made to be made to be done.

Therefore, the guide means does not enter the gap between the disk table and the base chassis, and the reliability of the ejection operation of the disk-shaped recording medium by the eject lever can be improved. In addition, the disc-shaped recording medium inserted from the disc insertion slot can be reliably held by the guide means and the pressing protrusion, and a reliable ejection operation can be achieved with a simple configuration.

  Hereinafter, the best mode of a disk drive device and an electronic apparatus according to the present invention will be described 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.

  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 includes a lower shell 7 having a shallow box shape opened upward and forward except for a part thereof, an upper shell 8 that closes the lower shell 7 from above, and a front panel 9 that closes the lower shell 7 from the front.

  An insertion hole 8 a is formed at the center of the upper shell 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).

  As shown in FIG. 3, the lower shell 7 is provided as a support surface portion 10 whose right end is positioned one step higher than the other portions, and is formed as an arrangement recess 11 in which a portion other than the support surface portion 10 is opened upward. Yes.

  A support shaft 10 a protruding upward is provided at the rear end portion of the support surface portion 10. Guide shafts 10b and 10b that protrude upward are provided at a substantially central portion of the support surface portion 10 in the front-rear direction.

  The mechanical chassis 12 is arranged in the arrangement recess 11 of the lower shell 7 with a certain distance from the bottom surface of the lower shell 7 (see FIG. 3). The mechanical chassis 12 has an arrangement hole 12a in a portion excluding the rear portion.

  As shown in FIG. 3, the mechanical chassis 12 is formed with a cam plate arrangement hole 12b at the rear end, and an arcuate arrangement hole 12c is formed at the left end near the rear end. A protrusion insertion hole 12d is formed at the left end of the projection. An insertion slit 12e extending in the front-rear direction is formed on the right edge of the mechanical chassis 12 (see FIG. 4).

  As shown in FIG. 5, the mechanical chassis 12 is provided with a first support pin 12f, a second support pin 12g, a third support pin 12h, and a fourth support pin 12i that protrude downward. Yes. The first support pin 12f and the second support pin 12g are spaced apart from each other at the right end of the rear end of the mechanical chassis 12, and the third support pin 12h and the fourth support pin 12i are arranged in an arc. They are spaced apart in the front-rear direction immediately in front of the hole 12c.

  A base chassis 13 is arranged in the arrangement hole 12a of the mechanical chassis 12, and the base chassis 13 is rotatably supported by the mechanical chassis 12 (see FIG. 5).

  The base chassis 13 is formed with a table arrangement hole 13a at a position near the rear end. The base chassis 13 is formed with a pickup hole 13b extending obliquely leftward from the table arrangement hole 13a.

  A spindle motor 14 is fixed at a position near the rear end of the base chassis 13, and a disk table 15 is fixed to the motor shaft of the spindle motor 14. The disk table 15 includes a table portion 15a formed in a disc shape and a center protrusion 15b protruding upward from the center portion of the table portion 15a.

  The center protrusion 15b is provided with holding claws 15c, 15c, 15c spaced apart in the circumferential direction. Each of the holding claws 15c, 15c, 15c is movable in the radial direction of the center protrusion 15b, and is urged by a spring (not shown) in a direction protruding radially from the center protrusion 15b.

  The disk table 15 is arranged in the table arrangement hole 13 a of the base chassis 13, and the upper surface of the table portion 15 a is positioned at substantially the same height as the upper surface of the base chassis 13.

  An optical pickup 16 is supported on the lower surface side of the base chassis 13 so as to be movable in a direction in which the optical pickup 16 is separated from and contacting the disk table 15. The optical pickup 16 is moved corresponding to the pickup hole 13 b of the base chassis 13.

  The base chassis 13 is rotatably supported by the mechanical chassis 12 with a shaft extending in a direction orthogonal to the longitudinal direction of the optical pickup 16 as a fulcrum, and is rotated in a direction in which the disk table 15 moves substantially vertically.

  Actuated pins 13 c and 13 d protrude outward from the outer peripheral surface of the base chassis 13. The actuated pins 13c and 13d protrude rearward and rightward, respectively.

  A drive motor 17 is disposed at the right end of the front end of the arrangement recess 11 of the lower shell 7 (see FIGS. 3 and 6). A worm 18 is fixed to the motor shaft of the drive motor 17.

  A reduction gear group 19 in which a plurality of gears are engaged with each other is supported at a position in the vicinity of the drive motor 17. The reduction gear group 19 is engaged with the worm 18.

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

  The slider 20 is composed of a slide cam 21 formed long in the front-rear direction and a plate-like cam plate 22 (see FIGS. 7 to 9). The slide cam 21 is supported on the right end portion of the arrangement recess 11 of the lower shell 7, and the cam plate 22 is supported on the support surface portion 10 of the lower shell 7 (see FIG. 4).

  A rack portion 21a is formed on the left side surface of the front end portion of the slide cam 21 (see FIG. 9). The left corner of the slide cam 21 near the rear end is provided as a switch pressing portion 21b.

  An elevating cam groove 23 that is opened to the left is formed at the center of the slide cam 21 in the front-rear direction. The elevating cam groove 23 extends from the front end of the lower side portion 23a to the front side of the lower side portion 23a, the rear side inclined portion 23b extending from the front end of the lower side portion 23a to the front and obliquely upward, and the front end of the rear side inclined portion 23b to the front and lower side. It consists of a front inclined part 23c and an upper part 23d extending forward from the front end of the front inclined part 23c, and the lower part 23a is positioned below the upper part 23d.

  An actuating pin 13d provided on the base chassis 13 is slidably engaged with the lift cam groove 23 of the slide cam 21.

  An interlocking cam groove 24 opened upward is formed at a position near the rear end of the slide cam 21. The interlocking cam groove 24 includes a non-acting portion 24a that extends in the front-rear direction and an actuating portion 24b that extends obliquely forward to the right from the front end of the non-acting portion 24a.

  A link cam groove 25 opened upward is formed at the rear end of the slide cam 21. The cam groove 25 for the link has a base end portion 25a that extends short from side to side, a rear straight portion 25b that extends forward from the left end of the base end portion 25a, and an inclination that extends obliquely leftward from the front end of the rear straight portion 25b. It comprises a portion 25c and a front straight portion 25d extending forward from the front end of the inclined portion 25c.

  The cam plate 22 is formed by integrally forming a cam surface portion 26 and a coupling protrusion 27 protruding leftward from the left edge of the cam surface portion 26. The cam plate 22 is inserted into the insertion slit 12e formed in the mechanical chassis 12 from the left (see FIG. 5), and the cam plate 22 is coupled to the upper surface of the slide cam 21.

  A pressing piece 26a protruding rearward is provided at the rear end of the cam surface portion 26 (see FIG. 9).

  Guided holes 26b and 26c extending in the front-rear direction are formed in the left half of the cam surface portion 26 so as to be separated from each other in the left-right direction.

  A cam hole 28 is formed in the right half of the cam surface portion 26. The cam hole 28 includes a large opening 28a that is largely open in a substantially rectangular shape, a first straight portion 28b that is positioned in front of the large opening 28a and extends in the front-rear direction, and a rear of the first straight portion 28b. An oblique portion 28c extending obliquely rightward and rearward from the end, a second straight portion 28d extending rearward from the rear end of the oblique portion 28c and continuing to the right end portion of the large opening portion 28a, and positioned behind the large opening portion 28a. The linear engagement portion 28e that extends short in the front-rear direction and the inclined engagement portion 28f that extends obliquely forward to the right from the front end of the linear engagement portion 28e. The front end of the inclined engagement portion 28f is the right end portion of the large opening 28a. Is continuous.

  As shown in FIG. 4, the guide shafts 10 b and 10 b provided in the lower shell 7 are inserted into the guided holes 26 b and 26 c, respectively, and the cam plate 22 moves in the front-rear direction together with the slide cam 21.

  A load lever 29 is rotatably supported on the support surface portion 10 of the lower shell 7 (see FIGS. 3 and 4). The load lever 29 includes a rotating surface portion 30 and a roller 31 rotatably supported on one end portion of the rotating surface portion 30 (see FIG. 10).

  The rotation surface portion 30 is rotatably supported on the support surface portion 10 below the cam plate 22. An engaging pin 30 a protruding upward is provided at the other end portion of the rotating surface portion 30. The engaging pin 30a is inserted into the cam hole 28 of the cam plate 22 from below.

  The load lever 29 is urged by a leaf spring 32 in one direction in the rotational direction, that is, in a direction in which the roller 31 moves substantially to the left. The plate spring 32 is formed by integrally forming a mounted surface portion 32a and a spring piece portion 32b protruding obliquely leftward and forward from the mounted surface portion 32a. As shown in FIG. 4, the plate spring 32 has a mounted surface portion 32 a attached to the support surface portion 10, and a spring piece portion 32 b pressed against the rotating surface portion 30 of the load lever 29 from the right side.

  A centering lever 33 is rotatably supported on a support shaft 10a provided on the support surface portion 10 of the lower shell 7 (see FIG. 4). The centering lever 33 is formed by connecting a regulating spring 35 to a lever body 34 (see FIG. 11).

  The lever main body 34 includes a supported portion 34a facing in the vertical direction, an arm portion 34b protruding from the supported portion 34a, a pressing portion 34c provided at a distal end portion of the arm portion 34b, and a supported portion 34a. An insertion shaft portion 34d that protrudes upward, a spring hook portion 34e that protrudes upward from the supported portion 34a and is located in the vicinity of the insertion shaft portion 34d, and a regulated portion that protrudes horizontally from the lower edge of the arm portion 34b And a protrusion 34f.

  The regulation spring 35 is formed by integrally forming a base surface portion 36 facing in the up-down direction and a spring portion 37 protruding in an oblique direction from the base surface portion 36. An insertion hole (not shown) is formed in the base surface portion 36. A pressed piece portion 36 a bent downward is provided at the front edge portion of the base surface portion 36.

  The restriction spring 35 is rotatably connected to the lever body 34 with the insertion shaft portion 34d serving as a fulcrum, with the insertion shaft portion 34d of the lever body 34 being inserted into the insertion hole. In the regulating spring 35, the spring portion 37 is pressed against the arm portion 34b of the lever main body 34 from the front side.

  The centering lever 33 is inserted into the insertion shaft portion 34d with the support shaft 10a provided on the support surface portion 10, and is supported rotatably on the lower shell 7 with the support shaft 10a as a fulcrum.

  An urging force control lever 38 that functions as an urging force control means is movably supported on the cam plate 22 (see FIG. 4). As shown in FIGS. 10 and 11, the urging force control lever 38 is formed long in the front-rear direction, and is provided with a first sliding pin 38a protruding upward at the front end portion, and at the intermediate portion in the front-rear direction. A second sliding pin 38b that protrudes upward is provided, and a spring hook pin 38c that protrudes upward is provided at the rear end.

  In the urging force control lever 38, the first sliding pin 38a and the second sliding pin 38b are slidably engaged with the cam hole 28 and the guided hole 26c of the cam plate 22, respectively, and moved to the cam plate 22. It is supported freely.

  A return spring 39 is supported on the centering lever 33 (see FIG. 11). In the return spring 39, the coil portion 39a is supported by the insertion shaft portion 34d of the centering lever 33 so as to be fitted outside, the first arm portion 39b is supported by the spring hooking portion 34e of the centering lever 33, and the second arm The portion 39c is supported by the spring hook pin 38c of the urging force control lever 38. Accordingly, the centering lever 33 and the urging force control lever 38 are urged by the return spring 39 in the direction in which they are in contact with each other.

  A lifting lever 40 is supported in the arrangement recess 11 of the lower shell 7 so as to be movable in the left-right direction (see FIG. 3).

  As shown in FIG. 12, the elevating lever 40 is formed by integrally forming an elevating part 41 that is long in the left-right direction and a connecting part 42 that protrudes rearward from the right end of the elevating part 41.

  The elevating part 41 is formed with an elevating engagement groove 43 opened forward. The elevating engagement groove 43 includes a lower groove 43a extending left and right, a left inclined groove 43b extending obliquely upward to the right from the right end of the lower groove 43a, and a right extending obliquely downward to the right from the right end of the left inclined groove 43b. It consists of an inclined groove 43c and an upper groove 43d extending rightward from the right end of the right inclined groove 43c, and the lower groove 43a is positioned below the upper groove 43d.

  An actuating pin 13c provided on the base chassis 13 is slidably engaged with the elevating engagement groove 43 of the elevating part 41 (see FIG. 6).

  The connecting portion 42 is formed with a connecting groove 42a that extends upward in the front-rear direction (see FIG. 12).

  The slide cam 21 of the slider 20 and the elevating lever 40 are connected by a connecting lever 44 (see FIGS. 6 to 8).

  The connecting lever 44 is formed in a substantially triangular shape, and is provided with connecting pins 44a and 44b protruding downward at the end portions separated from each other. The connection lever 44 has a supported hole 44c formed between the connection pins 44a and 44b.

  The first support pin 12f of the mechanical chassis 12 is inserted into the supported hole 44c (see FIG. 6), and the connection lever 44 is rotatably supported by the mechanical chassis 12 using the first support pin 12f as a fulcrum. The connecting lever 44 is slidably engaged with the interlocking cam groove 24 of the slide cam 21, the connecting pin 44 b is slidably engaged with the connecting groove 42 a of the elevating lever 40, and the slide cam 21. And the lift lever 40 are connected. Therefore, when the slide cam 21 is moved in the front-rear direction and the connecting pin 44a is engaged with the action portion 24b of the interlocking cam groove 24, the connecting lever 44 is rotated about the first support pin 12f as a lift lever. 40 is moved in the left-right direction.

  A center ring base 45 is rotatably supported on the third support pin 12h of the mechanical chassis 12 (see FIG. 5).

  The centering base 45 is formed by connecting a centering member 46 and a base plate 47 vertically (see FIG. 13).

  The centering member 46 is formed by integrally forming a base plate portion 48 facing in the vertical direction and a centering protrusion 49 protruding upward from the front end portion at the left end portion of the base plate portion 48. An insertion hole 48 a is formed in the substrate portion 48. On the right side surface of the centering protrusion 49, a first inclined surface 49a that gently inclines to the left as it goes forward and a second inclined surface 49b that inclines to the left gently as it goes backward are connected. Become.

  A supported hole 47 a is formed in the base plate 47, and the supported hole 47 a is smaller in diameter than the insertion hole 48 a of the center ring member 46. At the rear end portion of the base plate 47, a pressed pin 47b protruding upward is provided.

  In the state in which the centering member 46 and the base plate 47 are coupled to each other, the center of the supported hole 47a of the base plate 47 and the center of the insertion hole 48a of the centering member 46 coincide with each other.

  The centering base 45 has a third support pin 12h of the mechanical chassis 12 inserted into a supported hole 47a of the base plate 47, and is rotatably supported by the mechanical chassis 12 using the third support pin 12h as a fulcrum.

  In a state where the centering base 45 is supported by the mechanical chassis 12, the tension coil spring 50 is supported between the front end portion of the base plate 47 and the mechanical chassis 12. Accordingly, the centering base 45 is urged by the tension coil spring 50 in the direction in which the centering protrusion 49 is directed substantially to the right.

  The centering base 45 has a centering protrusion 49 protruding upward from the protrusion insertion hole 12 d of the mechanical chassis 12.

  A rotation base 51 is rotatably supported on the fourth support pin 12i of the mechanical chassis 12 (see FIG. 5).

  As shown in FIG. 14, the rotation base 51 includes a disk portion 52 formed in a substantially circular shape, a pressing plate portion 53 protruding in a radial direction from the outer peripheral edge of the disk portion 52, and a support protrusion 54. Consists of.

  The disc portion 52 is supported at its substantially central portion by the fourth support pin 12i so as to be freely rotatable. The disc portion 52 is provided with an action projecting piece 52a projecting outward. A supported hole 52 b into which the support pin 12 i is inserted is formed at the center of the disc part 52.

  The pressing plate portion 53 includes a protruding surface portion 53a provided at a position one step lower than the disk portion 52, a pressed piece portion 53b protruding upward from both side edges in the circumferential direction of the protruding surface portion 53a, a switch pressing piece portion 53c, and the like. Consists of.

  The support protrusion 54 is provided with a first stopper piece 54a and a second stopper piece 54b that protrude upward from both side edges in the circumferential direction.

  An eject lever 55 that functions as a support member for supporting the disc-shaped recording medium 100 is supported on the rotary base 51 in a rotatable state (see FIGS. 7, 8, and 14).

  As shown in FIG. 14, the eject lever 55 has a substantially isosceles triangle shape in which only one corner is formed as an obtuse angle when seen in a plan view, and a supported shaft portion 55a is provided at one corner portion which is an acute angle. A notch 55b is formed at the other corner that is provided and has an acute angle. The eject lever 55 is formed with an insertion hole 55c extending vertically between the supported shaft portion 55a and the notch 55b, and a support groove 55d opened upward between the notch 55b and the insertion hole 55c. A corner portion of the eject lever 55 on the supported shaft portion 55a side is provided as a stopper portion 55e.

  The eject lever 55 is provided with a mounting portion 55f immediately behind the support groove 55d, and a spring pressing portion 55g formed in a hook shape on the rear side of the mounting portion 55f. The eject lever 55 is provided with a pressing protrusion 55h above the notch 55b.

  The eject lever 55 has a supported shaft portion 55 a supported by the support protrusion 54 of the rotation base 51.

  In a state where the eject lever 55 is supported by the rotation base 51, the limiter spring 56 is supported between the eject lever 55 and the rotation base 51. The limiter spring 56 is a torsion coil spring, the coil portion 56a is supported by the supported shaft portion 55a of the eject lever 55, the one end portion 56b is supported by the second stopper piece 54b of the rotation base 51, and the other end portion 56c. Is supported by the spring pressing portion 55g of the eject lever 55. Accordingly, the eject lever 55 is urged clockwise by the limiter spring 56 in a plan view, and the stopper portion 55e is held at a position in contact with the second stopper piece 54b of the rotating base 51 (FIGS. 7 and 7). 8).

  The eject lever 55 can be rotated counterclockwise to a position where the stopper portion 55e is in contact with the first stopper piece 54a of the rotary base 51.

  A disk receiving member 57 is supported on the eject lever 55 (see FIGS. 7 and 14). As shown in FIG. 14, the disk receiving member 57 includes a supported portion 58 formed in the shape of a round shaft that is long in the horizontal direction, and an action portion 59 that protrudes from one end portion in the axial direction of the supported portion 58. The guide protrusion 60 projecting in the same direction as the action portion 59 from the other end portion in the axial direction of the supported portion 58, and the guide protrusion piece 60 from the position near the other end in the axial direction of the supported portion 58. The regulated projection 61 projecting in the direction is integrally formed.

  The supported portion 58 is formed with pressed surfaces 58a and 58a that are spaced apart in the axial direction and cut out in a planar shape.

  The guide protrusion 60 functions as guide means for guiding the disc-shaped recording medium 100 inserted from the disc insertion opening 9a.

  The disc receiving member 57 is supported by the eject lever 55 such that the supported portion 58 is inserted into the support groove 55 d so as to be rotatable about the axis of the supported portion 58. In a state where the disc receiving member 57 is supported by the eject lever 55, the action portion 59 is positioned in the insertion hole 55c of the eject lever 55, and the guide protrusion 60 is positioned in the notch 55b of the eject lever 55. The disk receiving member 57 is rotatable in the direction around one axis of the supported portion 58 until the regulated protrusion 61 contacts the eject lever 55.

  In the disk receiving member 57, the angle formed by the protruding direction of the action portion 59 and the guide protrusion 60 from the supported portion 58 and the pressed surfaces 58a and 58a of the supported portion 58 is made larger than 90 ° ( 15 and 16).

  In a state where the disc receiving member 57 is supported by the eject lever 55, the pressing member 62 is attached to the attachment portion 55 f of the eject lever 55. The pressing member 62 is provided with two pressing protrusions 62a and 62a facing in the vertical direction.

  In the disk receiving member 57, the pressed surfaces 58a and 58a are pressed by the pressing protrusions 62a and 62a of the pressing member 62, respectively.

  In the state where the disk receiving member 57 is pressed by the pressing member 62, when the force from below is not applied to the action part 59 or the guide protrusion 60 of the disk receiving member 57, as shown in FIG. 58a and 58a are brought into surface contact with the pressing protrusions 62a and 62a, respectively, and the action part 59 and the guide protrusion 60 are held so as to protrude obliquely downward from the supported part 58.

  On the other hand, when a force F from below is applied to the action portion 59 or the guide protrusion 60 of the disk receiving member 57 in a state where the disk receiving member 57 is pressed by the pressing member 62, as shown in FIG. The front edges of the pressed surfaces 58a and 58a are in contact with the pressing projections 62a and 62a, respectively, and the action portion 59 and the guide projection piece 60 are held so as to protrude from the supported portion 58 in the horizontal direction. At this time, the disk receiving member 57 is restricted from rotating in the direction in which the regulated protrusion 61 comes into contact with the eject lever 55 from the front and the action part 59 and the guide protruding piece 60 move substantially upward.

  A cam member 63 is attached to the lower surface of the mechanical chassis 12 at the rear end thereof (see FIGS. 3, 7, and 8). The cam member 63 is formed by integrally forming a plate-like attached plate portion 64 and a cam portion 65 protruding upward from the attached plate portion 64.

  The cam portion 65 is formed in the same shape as the arrangement hole 12a of the mechanical chassis 12, and is inserted into the arrangement hole 12a from below. The cam portion 65 is formed with a loop-like cam engagement groove 66 opened downward (see FIG. 17). The cam engagement groove 66 is constituted by a first path 67 and a second path 68, and the start point of the first path 67 is located at the end. The start point of the first route 67 and the end point of the second route 68 are matched, and the start point of the second route 68 and the end point of the first route 67 are matched.

  The cam engagement groove 66 is a space formed by the inner wall portion 69 and the outer wall portion 70 located outside the inner wall portion 69.

  The cam engaging groove 66 includes a first cam portion 66a that inclines sharply from the start point of the first path 67 to the right and obliquely forward, and a second cam portion that inclines to the left and obliquely rearward from the end point of the first cam portion 66a. A cam portion 66b, a third cam portion 66c inclined obliquely left forward from the start point of the second cam portion 66b, and a fourth cam portion inclined obliquely rightward and backward from the end point of the third cam portion 66c. 66d, the first cam portion 66a, the second cam portion 66b, and the third cam portion 66c serve as the first path 67, and the fourth cam portion 66d serves as the second path 68. .

  A link mechanism 71 is supported on the lower surface side of the mechanical chassis 12 (see FIGS. 3, 7, and 8). The link mechanism 71 includes a first arm 72, a second arm 73, a third arm 74, and a fourth arm 75 (see FIG. 18).

  The first arm 72 extends substantially front and rear, and a front end portion thereof is rotatably connected to an outer peripheral portion of the disc portion 52 of the rotation base 51.

  A first tension coil spring 76 is supported between a substantially central portion of the first arm 72 in the front-rear direction and a mounted plate portion 64 of the cam member 63 positioned to the right of the first arm 72. . Accordingly, the first arm 72 is urged by the first tension coil spring 76 in a direction to move substantially rightward.

  A second tension coil spring 77 is supported between a position near the rear end of the first arm 72 and the left end portion of the mechanical chassis 12. Accordingly, the first arm 72 is biased in the direction of moving substantially to the left by the second tension coil spring 77. The second tension coil spring 77 is located behind the first tension coil spring 76.

  The second arm 73 extends substantially in the left-right direction, and the left end portion is rotatably connected to the first arm 72. The second arm 73 is connected to a position between the positions where the first tension coil spring 76 and the second tension coil spring 77 are supported in the first arm 72. An insertion engagement hole 73 a extending substantially in the front-rear direction is formed in a substantially central portion in the left-right direction of the second arm 73.

  The third arm 74 is formed in a shape in which one end side portion is bent in the horizontal direction with respect to the other portion, and the other end portion is rotatably connected to the first arm 72. The bent portion of the third arm 74 is provided with an engaging protrusion 74a that protrudes downward. One end of the third arm 74 is provided with a cam protrusion pin 74 b that protrudes upward.

  In the third arm 74, the engagement protrusion 74 a is inserted into the insertion engagement hole 73 a of the second arm 73 from above, and the cam protrusion pin 74 b is inserted into the cam engagement groove 66 of the cam member 63 from below. .

  A torsion coil spring 78 is supported between the first arm 72 and the third arm 74. The torsion coil spring 78 urges the third arm 74 substantially rearward and the first arm 72 substantially leftward about the connection point between the third arm 74 and the first arm 72. Be forced.

  The fourth arm 75 is formed in a substantially boomen run shape, and has an engagement shaft 75a protruding downward at one end. A supported hole 75 b is formed in the bent portion of the fourth arm 75. The fourth arm 75 is configured such that the second support pin 12g of the mechanical chassis 12 is inserted into the supported hole 75b and can be rotated about the support pin 12g. The other end of the fourth arm 75 is rotatably connected to the right end of the second arm 73, and the engagement shaft 75 a is slidably engaged with the link cam groove 25 of the slide cam 21. Yes. Accordingly, when the slide cam 21 is moved in the front-rear direction and the engagement position of the engagement shaft 75a with the link cam groove 25 is changed, the fourth arm 75 is rotated and the link mechanism 71 is operated.

  A circuit board 79 is disposed at a position on the rear end side on the upper surface of the lower shell 7 (see FIGS. 3, 7, and 8). The circuit board 79 is provided with a motor activation switch 80 at a position near the left end. A first detection switch 81, a second detection switch 82, and a third detection switch 83 are provided at the right end portion of the circuit board 79 from the front side and separated from each other in the front-rear direction.

  Hereinafter, the operation of the disk drive device 5 when the disk-shaped recording medium 100 is loaded and ejected will be described (see FIGS. 19 to 48). In the following, the rotation direction of each part will be described based on the R1-R2 directions shown in the drawings. The R1 direction is a counterclockwise direction when viewed in a plane, and the R2 direction is a clockwise 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. 19 to 21).

  The slider 20 formed by combining the slide cam 21 and the cam plate 22 is positioned at the front moving end (see FIG. 19). In the slide cam 21, the switch pressing portion 21 b is positioned close to the first detection switch 81 provided on the circuit board 79, and the first detection switch 81, the second detection switch 82, and the third detection switch 83. Both are turned off.

  As shown in FIG. 20, in the base chassis 13, the operated pin 13 c is engaged with the lower groove portion 43 a in the elevating engagement groove 43 of the elevating lever 40, and the operated pin 13 d is the elevating cam groove of the slide cam 21. 23 is engaged with the lower side portion 23a. Therefore, the base chassis 13 is held at the lower rotation end.

  As shown in FIG. 19, the load lever 29 is urged in the R2 direction by a plate spring 32, and the engagement pin 30 a is engaged with the rear edge of the large opening 28 a in the cam hole 28 of the cam plate 22.

  The centering lever 33 is urged in the R1 direction by the return spring 39, and the regulated protrusion 34f of the lever main body 34 is in contact with the pressing piece 26a of the cam plate 22 and is held at the rotation end in the R1 direction.

  In the urging force control lever 38, the first sliding pin 38 a is engaged with the linear engagement portion 28 e in the cam hole 28 of the cam plate 22, and the second sliding pin 38 b is in the guided hole 26 c of the cam plate 22. It is engaged with the rear end and is held at the rotation end in the R2 direction.

  The elevating lever 40 is positioned at the right moving end.

  In the connecting lever 44, the connecting pin 44 a is engaged with the rear end portion of the non-acting portion 24 a in the interlocking cam groove 24 of the slide cam 21, and the connecting pin 44 b is engaged with the rear end portion of the connecting groove 42 a of the elevating lever 40. Has been.

  The centering base 45 is urged in the R1 direction by the tension coil spring 50, and the lower end portion of the centering projection 49 comes into contact with the opening edge of the projection insertion hole 12d formed in the mechanical chassis 12 so as to rotate in the R1 direction. It is regulated and held at the rotation end in the R1 direction.

  The rotation base 51 is held at the rotating end in the R2 direction, the action projecting piece 52a is positioned on the rear side of the pressed pin 47b of the centering base 45, and the pressed piece portion 53b is provided on the circuit board 79. It is located in front of the switch 80 for use. Therefore, the motor start switch 80 is in the OFF state.

  The eject lever 55 is positioned at the rotation end in the R2 direction while being urged by the limiter spring 56, and the disk receiving member 57 supported by the eject lever 55 has both the operating portion 59 and the guide protrusion 60 of the base chassis 13. Located above. At this time, since the base chassis 13 is positioned at the lower rotation end as described above, the guide protrusion 60 is brought into a front-lowering state so as to contact the upper surface of the base chassis 13 and eject the guide protrusion 60. A large opening is formed between the pressing projection 55h of the lever 55 (see FIG. 16).

  In the link mechanism 71, as shown in FIG. 21, the engagement protrusion 74a of the third arm 74 is in contact with the left opening edge of the insertion engagement hole 73a of the second arm 73, and the third arm 74 74 cam protrusion pins 74 b are engaged with the start point of the first path 67 in the cam engagement groove 66 of the cam member 63. At this time, the cam projection pin 74 b is in contact with the outer wall portion 70 of the cam member 63.

  The engagement shaft 75 a of the fourth arm 75 is engaged with the base end portion 25 a of the link cam groove 25 of the slide cam 21.

  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, the disc-shaped recording medium 100 is placed on the roller 31 of the load lever 29 as shown in FIG. The contact load lever 29 is rotated in the R1 direction against the urging force of the leaf spring 32 as the disc-shaped recording medium 100 is inserted. By rotating the load lever 29 in the R1 direction, the engaging pin 30a is separated from the rear opening edge of the large opening 28a of the cam plate 22.

  Note that, when the disc-shaped recording medium 100 is inserted into and ejected from the disc insertion slot 9a, the disc-shaped recording medium 100 is guided while the outer peripheral portion is slidably contacted by guide means (not shown) and moved in the front-rear direction.

  The disc-shaped recording medium 100 inserted from the disc insertion slot 9a is inserted and held between the pressing projection 55h of the eject lever 55 and the guide projection 60 of the disc receiving member 57 at the outer periphery.

  At this time, as described above, the guide projecting piece 60 is in a front-lowering state, and a large opening is formed between the pressing projecting piece 55h and the guide projecting piece 60. Is securely inserted, and the disc-shaped recording medium 100 can be reliably held by the eject lever 55.

  In addition, since the guide protrusions 60 and the pressing protrusions 55h are located at opposite positions, the disc-shaped recording medium 100 can be reliably held.

  When the disc-shaped recording medium 100 is further inserted and moved backward, the load lever 29 is further rotated in the R1 direction (see FIG. 23).

  Due to the backward movement of the disc-shaped recording medium 100, the pressing portion 34c of the centering lever 33 is pressed by the disc-shaped recording medium 100, and the centering lever 33 is rotated in the R2 direction against the biasing force of the return spring 39. To go.

  At this time, the eject lever 55 is pressed by the disc-shaped recording medium 100 and moved backward together with the rotary base 51. Accordingly, the rotation base 51 and the eject lever 55 are rotated in the R1 direction around the rotation center of the rotation base 51.

  As the rotation base 51 rotates, the link mechanism 71 is operated. As shown in FIG. 24, the engagement protrusion 74a of the third arm 74 is moved through the insertion engagement hole 73a of the second arm 73, and the first The cam projecting pin 74b of the third arm 74 is moved from the starting point of the first path 67 toward the second cam portion 66b through the first cam portion 66a.

  At this time, the first arm 72 is moved, and the first tension coil spring 76 and the second tension coil spring 77 are both extended.

  Although the tension directions of the first tension coil spring 76 and the second tension coil spring 77 are substantially opposite to each other, the first tension coil spring 76 depends on the insertion position of the disk-shaped recording medium 100 with respect to the disk drive device 5. The biasing force of the second tension coil spring 77 is applied to the eject lever 55 through the rotary base 51 as a force in a direction in which the disc-shaped recording medium 100 is pressed forward. Accordingly, the first tension coil spring 76 and the second tension coil spring 77 function as an urging spring that can apply a force in a direction of pressing the disk-shaped recording medium 100 forward, and the first tension coil spring 76 and the second tension coil spring 76. The urging force of the tension coil spring 77 acts on the user as a reaction force when the disc-shaped recording medium 100 is inserted according to the insertion position of the disc-shaped recording medium 100 with respect to the disc drive device 5.

  When the eject lever 55 is rotated in the R1 direction, the action portion 59 of the disk receiving member 57 rides on the upper surface of the mechanical chassis 12 from above the base chassis 13. Accordingly, the disk receiving member 57 is rotated in a direction in which the tip of the action portion 59 and the tip of the guide protrusion 60 move upward, and the guide protrusion 60 approaches the pressing protrusion 55h of the eject lever 55 and is substantially horizontal. State (see FIG. 16).

  When the disc-shaped recording medium 100 is further moved rearward, the roller 31 of the load lever 29 comes into contact with the rear portion of the disc-shaped recording medium 100 in the front-rear direction (see FIG. 25), and the leaf spring 32 is attached. The force acts as a moving force toward the rear of the disc-shaped recording medium 100.

  The centering lever 33 is further pressed by the disc-shaped recording medium 100 by the backward movement of the disc-shaped recording medium 100, and the centering lever 33 is further rotated in the R2 direction against the biasing force of the return spring 39. .

  The eject lever 55 is further pressed by the disk-shaped recording medium 100 and rotated integrally with the rotary base 51. The motor activation switch 80 is operated by the switch pressing piece 53c of the rotary base 51 to be turned on. . When the motor activation switch 80 is turned on, the drive motor 17 is rotated in one direction (forward rotation direction).

  Note that after the motor activation switch 80 is turned on and the rotation of the drive motor 17 is started, the disk-shaped recording medium 100 is loaded by the drive force of the drive motor 17, so that the disk manually operated by the user. Insertion of the recording medium 100 becomes unnecessary.

  When the drive motor 17 is rotated, the driving force is transmitted to the slide cam 21 through the worm 18 and the reduction gear group 19, and the slider 20 constituted by the slide cam 21 and the cam plate 22 is moved rearward. Go.

  When the slide cam 21 is moved rearward by the rotation of the drive motor 17, the first detection switch 81 is turned on by the switch pressing portion 21b of the slide cam 21, but the drive motor 17 rotates in the forward rotation direction. The maintained state is maintained.

  Due to the rearward movement of the slide cam 21, the connection lever 44 is moved so that the connection pin 44 a moves the non-acting portion 24 a in the interlocking cam groove 24 of the slide cam 21 relatively forward. Therefore, the elevating lever 40 is not moved.

  As the cam plate 22 moves rearward, the biasing force control lever 38 causes the first sliding pin 38a to move from the linear engagement portion 28e of the cam plate 22 toward the inclined engagement portion 28f, as shown in FIG. The second sliding pin 38b is relatively moved with the guided hole 26c of the cam plate 22 facing forward.

  As the rotary base 51 rotates, the engagement protrusion 74a of the third arm 74 is moved through the insertion engagement hole 73a of the second arm 73 as shown in FIG. The pin 74b is moved through the first path 67 of the cam member 63 to the start point of the second cam portion 66b.

  When the drive motor 17 is further rotated, the cam plate 22 is further moved rearward, and the biasing force control lever 38 causes the first sliding pin 38a to point the inclined engagement portion 28f of the cam plate 22 relatively forward. And is rotated in the R1 direction (see FIG. 27). When the urging force control lever 38 is rotated in the R1 direction, the urging force of the return spring 39 is increased, and the reaction force of the centering lever 33 against the insertion of the disc-shaped recording medium 100 is increased.

  At this time, the cam plate 22 moves rearward so that the front opening edge of the large opening 28 a contacts the engaging pin 30 a of the load lever 29. The disc-shaped recording medium 100 is not moved backward, and the rotation base 51 and the eject lever 55 are not rotated.

  Since the slide cam 21 is moved rearward by the rotation of the drive motor 17, the link mechanism 71 is operated (see FIG. 28). When the link mechanism 71 is operated, the cam projection pin 74b of the third arm 74 moves on the first path 67 of the cam member 63 from the start point of the second cam part 66b to the start point of the third cam part 66c. Is done.

  As the slide cam 21 moves rearward, as shown in FIG. 27, the connecting lever 44 moves the connecting pin 44a so that the non-acting portion 24a of the interlocking cam groove 24 of the slide cam 21 is moved further forward. The

  The drive motor 17 is further rotated, and the slider 20 is continuously moved backward (see FIG. 29). Due to the movement of the slider 20, the engagement pin 30a of the load lever 29 is pressed backward by the front opening edge of the large opening 28a of the cam plate 22, and the load lever 29 is rotated in the R2 direction. Accordingly, the disk-shaped recording medium 100 is pressed backward by the roller 31, and the disk-shaped recording medium 100 is moved backward again.

  In the urging force control lever 38, the first slide pin 38a is relatively moved to the front end portion of the inclined engagement portion 28f of the cam plate 22 by the rearward movement of the cam plate 22, and is rotated in the R1 direction. Go. At this time, the disc-shaped recording medium 100 is moved rearward so that the centering lever 33 is rotated in the R2 direction and the urging force control lever 38 is rotated in the R1 direction, so that the urging force of the return spring 39 is further increased. The reaction force of the centering lever 33 against the insertion of the disc-shaped recording medium 100 is further increased.

  The rotation base 51 and the eject lever 55 are rotated in the R1 direction by the rearward movement of the disk-shaped recording medium 100. At this time, the outer peripheral surface of the disc-shaped recording medium 100 is brought into sliding contact with the centering protrusion 49 of the centering base 45 from the first inclined surface 49a to the second inclined surface 49b. To the left side and rotated in the R2 direction against the urging force of the tension coil spring 50.

  The disc-shaped recording medium 100 is held at three points from the radial direction by the roller 31 of the load lever 29, the pressing portion 34c of the centering lever 33, and the centering protrusion 49 of the centering base 45.

  As the slide cam 21 moves rearward and the rotation base 51 rotates in the R1 direction, the link mechanism 71 is operated, and the cam projection pin 74b of the third arm 74 is connected to the cam member 63 as shown in FIG. The first path 67 is moved from the start point of the third cam portion 66c to a position near the start point of the fourth cam portion 66d. In the fourth arm 75, the engagement shaft 75a is moved from the base end portion 25a of the link cam groove 25 of the slide cam 21 toward the rear linear portion 25b.

  Due to the rearward movement of the slide cam 21, the connection lever 44 is moved so that the connection pin 44 a moves the non-acting portion 24 a in the interlocking cam groove 24 of the slide cam 21 relatively further forward.

  Further, the drive motor 17 is rotated, and the slider 20 is continuously moved backward (see FIG. 31).

  By the movement of the slider 20, the engagement pin 30a of the load lever 29 is further pushed backward by the front opening edge of the large opening portion 28a of the cam plate 22, and the load lever 29 is rotated in the R2 direction. The disc-shaped recording medium 100 is pressed rearward by the roller 31, the load lever 29 is rotated in the R2 direction, and the engaging pin 30a is camped when the engaging pin 30a is positioned corresponding to the first linear portion 28b. As the plate 22 moves rearward, it is engaged with the second linear portion 28d.

  When the engagement pin 30a is engaged with the second linear portion 28d, the load lever 29 stops rotating in the R2 direction and stops moving to the rear of the disc-shaped recording medium 100. At this time, the center hole 100a of the disc-shaped recording medium 100 is positioned immediately above the centering protrusion 15b of the disc table 15.

  In the urging force control lever 38, the first sliding pin 38a is relatively moved from the inclined engaging portion 28f of the cam plate 22 to the large opening 28a by the rearward movement of the cam plate 22. At this time, the disc-shaped recording medium 100 is moved rearward and the centering lever 33 is rotated in the R2 direction, whereby the urging force of the return spring 39 is maximized.

  The rotation base 51 and the eject lever 55 are rotated in the R1 direction by the backward movement of the disc-shaped recording medium 100, and the rotation of the rotation base 51 and the eject lever 55 is stopped when the backward movement of the disc-shaped recording medium 100 is stopped. The movement is stopped. At this time, the disc-shaped recording medium 100 is still held at three points from the radial direction by the roller 31 of the load lever 29, the pressing portion 34c of the centering lever 33, and the centering protrusion 49 of the centering base 45, and the disc table 15 Centered against.

  The link mechanism 71 is operated with the rearward movement of the slide cam 21 and the rotation of the rotation base 51 in the R1 direction (see FIG. 32), and the fourth arm 75 is engaged with the rearward movement of the slide cam 21. The combined shaft 75a is moved from the base end portion 25a of the link cam groove 25 of the slide cam 21 to the rear straight portion 25b, and is relatively moved forward with respect to the rear straight portion 25b. The cam projection pin 74b of the third arm 74 is moved along the first path 67 of the cam member 63 to the start point of the fourth cam portion 66d.

  In a state where the cam projecting pin 74b is moved to the starting point of the fourth cam portion 66d, the third force 74 is supported by the torsion coil spring 78 supported between the third arm 74 and the first arm 72. The arm 74 is urged in the R1 direction, and the cam projection pin 74b is urged in a direction in contact with the outer wall portion 70. Therefore, the torsion coil spring 78 functions as a spring member that urges the third arm 74 in the direction in which the cam projection pin 74 b is directed from the first path 67 to the second path 68.

  Due to the rearward movement of the slide cam 21, the connection lever 44 moves the connection pin 44a relatively from the non-acting portion 24a to the acting portion 24b in the interlocking cam groove 24 of the slide cam 21. Accordingly, the connecting lever 44 is rotated in the R1 direction, the connecting pin 44b is moved forward through the connecting groove 42a of the elevating lever 40, and the elevating lever 40 is moved leftward. When the elevating lever 40 is moved to the left, the actuated pin 13c of the base chassis 13 is moved to the right relative to the lower groove 43a in the elevating engagement groove 43 of the elevating lever 40. To go. At this time, due to the rearward movement of the slide cam 21, the actuated pin 13 d of the base chassis 13 is simultaneously moved relatively forward in the lower side portion 23 a of the lift cam groove 23 of the slide cam 21.

  The drive motor 17 continues to rotate, and the slider 20 continues to move backward (see FIG. 33).

  As the slider 20 moves rearward, the load lever 29 moves the engagement pin 30a relatively from the second straight part 28d to the first straight part 28b via the oblique part 28c. Accordingly, the load lever 29 is rotated in the R1 direction, the roller 31 is separated from the outer peripheral surface of the disc-shaped recording medium 100, and the holding of the disc-shaped recording medium 100 by the roller 31 is released.

  In the urging force control lever 38, the first sliding pin 38a is relatively moved from the large opening 28a of the cam plate 22 to the second linear portion 28d by the rearward movement of the cam plate 22.

  By the backward movement of the cam plate 22, the pressed piece portion 36a of the regulating spring 35 of the centering lever 33 is pressed backward by the pressing piece 26a. When the pressed piece portion 36a of the regulating spring 35 is pressed rearward, the centering lever 33 is rotated in the R2 direction, the pressing portion 34c is separated from the outer peripheral surface of the disc-shaped recording medium 100, and the disc-shaped recording medium is obtained. The holding by the pressing portion 34c of 100 is released. At this time, the centering lever 33 is restricted from rotating in the R2 direction by a stopper (not shown). The regulating spring 35 is bent when the spring portion 37 is pressed against the arm portion 34 b of the centering lever 33. Accordingly, the rotation of the lever main body 34 more than necessary is restricted, and the rotation space of the centering lever 33 is reduced accordingly, and the disk drive device 5 can be downsized.

  As the slide cam 21 moves rearward and the rotation base 51 rotates in the R1 direction, the link mechanism 71 is operated (see FIG. 34), and the engagement shaft 75a of the fourth arm 75 is used for linking the slide cam 21. The cam groove 25 is relatively moved from the rear straight portion 25b to the front straight portion 25d via the inclined portion 25c. When the engagement shaft 75a is moved to the front linear portion 25d via the inclined portion 25c, the fourth arm 75 is rotated in the R1 direction, and the cam projection pin 74b of the third arm 74 is 4 is held at the starting point of the cam portion 66d.

  Since the connecting pin 44a is engaged with the action part 24b, the connecting lever 44 is further rotated in the R1 direction by the backward movement of the slide cam 21. In the connecting lever 44, the connecting pin 44b is moved from the rear end portion to the front end portion through the connecting groove 42a of the elevating lever 40, and the elevating lever 40 is further moved leftward.

  When the elevating lever 40 is moved to the left, the actuated pin 13c of the base chassis 13 is moved relative to the elevating engagement groove 43 of the elevating lever 40 from the lower groove 43a to the upper groove 43d. At this time, the slide cam 21 is moved rearward at the same time, and the actuated pin 13d of the base chassis 13 is relatively moved in the lift cam groove 23 of the slide cam 21 from the lower side portion 23a to the upper side portion 23d. . Accordingly, the base chassis 13 is rotated in the direction in which the disk table 15 moves upward with respect to the mechanical chassis 12, and the disk table 15 is inserted into the center hole 100 a of the disk-shaped recording medium 100 to Chucking is performed.

  Incidentally, as shown in FIG. 35, the chucking of the disc-shaped recording medium 100 is performed such that the actuated pin 13c and the actuated pin 13d of the base chassis 13 are respectively connected to the upper end of the left inclined groove 43b of the elevating engagement groove 43 and the elevating When relatively moved to the upper end of the rear inclined portion 23 b of the cam groove 23, the upper end portion of the disc table 15 protrudes from the insertion hole 8 a of the upper shell 8, and the disc-shaped recording medium 100 is formed on the lower surface of the upper shell 8. The upper surface of the disk-shaped recording medium 100 is in contact with each other, and the inner peripheral portion of the disc-shaped recording medium 100 is held between the holding claws 15c, 15c, 15c and the table portion 15a.

  In the base chassis 13, as shown in FIG. 36, the actuated pin 13c and the actuated pin 13d are relatively moved to the upper groove portion 43d of the elevating engagement groove 43 and the upper portion 23d of the elevating cam groove 23, respectively. As a result, the recording / reproducing position is held.

  As the slide cam 21 moves rearward, as shown in FIG. 33, the switch pressing portion 21b sequentially operates the second detection switch 82 and the third detection switch 83 to turn them on. Even if the second detection switch 82 is turned on, the rotation of the drive motor 17 is not stopped. However, when the third detection switch 83 is turned on, the rotation of the drive motor 17 is temporarily stopped, and the other ( Rotated in the reverse direction).

  When the drive motor 17 is rotated in the reverse direction, the slide cam 21 is moved forward, and the base chassis 13 has the actuated pin 13c and the actuated pin 13d respectively connected to the upper end of the left inclined groove portion 43b of the elevating engagement groove 43. It is moved again to the upper end of the rear inclined portion 23b of the raising / lowering cam groove 23, and the chucking operation for the disc-shaped recording medium 100 by the disc table 15 is performed again.

  When the slide cam 21 is moved forward, the third detection switch 83 is turned off, and then the second detection switch 82 is also turned off. When the second detection switch 82 is turned off, the drive motor 17 is once again stopped and then rotated in the forward rotation direction.

  When the drive motor 17 is rotated in the forward rotation direction again, the slide cam 21 is moved rearward, and the third detection switch 83 is turned on after the second detection switch 82, whereby the drive motor 17. The rotation is stopped and the slider 20 is held at the moving end on the rear side.

  As described above, in the disk drive device 5, the chucking operation for the disk-shaped recording medium 100 by the disk table 15 is performed twice. Accordingly, the disk-shaped recording medium 100 can be reliably chucked.

  When the slide cam 21 is moved backward, the lift lever 40 is moved to the left as described above, and the pressed piece 53b of the rotation base 51 is pressed to the left by the lift lever 40 (FIG. 33). And FIG. 34).

  When the pressed piece 53b is pressed to the left, the rotation base 51 is rotated integrally with the eject lever 55 in the R1 direction.

  When the rotation base 51 is rotated in the R1 direction, the pressed pin 47b of the centering base 47 is pressed rightward by the action projecting piece 52a, and the centering base 47 is rotated in the R2 direction. 49 is separated from the outer peripheral surface of the disc-shaped recording medium 100, and the holding of the disc-shaped recording medium 100 by the centering protrusion 49 is released.

  Further, when the eject lever 55 is rotated in the R1 direction, the eject lever 55 is separated from the outer peripheral surface of the disc-shaped recording medium 100.

  It should be noted that while the disc-shaped recording medium 100 is moved rearward, even if the rotation operation of the rotary base 51 in the R1 direction is restricted by contact with other members, the eject lever 55 is not limited to the limiter spring 56. It can be rotated in the R1 direction independently of the rotation base 51 against the urging force. Therefore, the eject lever 55, the rotation base 51, and the disk-shaped recording medium 100 are not damaged when the disk-shaped recording medium 100 moves backward.

  As described above, the holding of the disc-shaped recording medium 100 by the roller 31 of the load lever 29, the pressing portion 34c of the centering lever 33, and the centering protrusion 49 of the centering base 45 is released, and the eject lever 55 is disc-shaped. When the disk table 15 is chucked in a state separated from the outer peripheral surface of the recording medium 100, the disk-shaped recording medium 100 can be rotated.

  The disk-shaped recording medium 100 is rotated as the disk table 15 is rotated by the rotation of the spindle motor 14, and information signals are recorded or reproduced on the disk-shaped recording medium 100 by driving the optical pickup 16.

  When the recording or reproduction of the information signal is completed, the rotation of the drive motor 17 in the reverse direction is started by the user's operation on an unillustrated eject button.

  When the drive motor 17 is rotated in the reverse direction, as shown in FIG. 37, the slider 20 is moved forward, and the third detection switch 83 and the second detection switch 82 are moved by the forward movement of the slide cam 21. Although sequentially turned OFF, the drive motor 17 continues to rotate in the reverse direction.

  The forward movement of the slider 20 causes the movement of the base chassis 13 in the direction opposite to the above-described loading operation except for the operation of the link mechanism 71. 43d is relatively moved toward the lower groove 43a, and the actuated pin 13d is relatively moved from the upper portion 23d of the slide cam 21 toward the lower portion 23a.

  At the same time, the forward movement of the slider 20 causes the connecting lever 44 to rotate in the R2 direction, as shown in FIG. 37, and the engagement pin 30a of the load lever 29 is a second straight line in the cam hole 28 of the cam plate 22. The urging force control lever 38 is moved to the large opening 28a in the cam hole 28 of the cam plate 22, and the pressing piece 26a of the cam plate 22 is moved by the centering lever 33. Separated forward from the pressing piece portion 36a, the pressing of the rotating base 51 against the pressed piece portion 53b by the elevating lever 40 is released, and the rotating base 51 and the eject lever 55 are rotated in the R2 direction. The engagement shaft 75a is moved to the rear straight portion 25b in the link cam groove 25 of the slide cam 21.

  The load lever 29 is rotated in the R2 direction by the urging force of the leaf spring 32 so that the roller 31 is brought into contact with the outer peripheral surface of the disc-shaped recording medium 100, and the centering lever 33 is rotated in the R1 direction by the urging force of the return spring 39. Then, the pressing portion 34c is brought into contact with the outer peripheral surface of the disc-shaped recording medium 100, the centering base 45 is rotated in the R1 direction by the urging force of the tension coil spring 50, and the centering projection 49 is outer peripheral of the disc-shaped recording medium 100. The disc-shaped recording medium 100 is again held by the load lever 29, the centering lever 33 and the centering base 45.

  By rotating the eject lever 55 in the R2 direction, the disc-shaped recording medium 100 is held by the pressing projection 55h of the eject lever 55 and the guide projection 60 of the disc receiving member 57.

  The cam projection pin 74b of the third arm 74 remains held at the starting point of the fourth cam portion 66d of the cam member 63 (see FIG. 38).

  When the slide cam 21 is further moved forward by the rotation of the drive motor 17, the connecting lever 44 is further rotated in the R2 direction as shown in FIG. 39, and the elevating lever 40 is moved to the moving end on the right side. Is done. In the base chassis 13, the operated pin 13c is relatively moved from the upper groove portion 43d to the lower groove portion 43a of the elevating lever 40, and the operated pin 13d is relatively moved from the upper portion 23d to the lower side portion 23a of the slide cam 21. The disk table 15 is moved downward as the base chassis 13 is rotated. At this time, since the disk-shaped recording medium 100 is held by the load lever 29, the centering lever 33, and the centering base 45, the disk table 15 is lowered with respect to the disk-shaped recording medium 100, and the disk with respect to the disk-shaped recording medium 100 is Chucking by the table 15 is released.

  With the forward movement of the slide cam 21, the fourth arm 75 is relatively moved so that the engagement shaft 75a faces the rear straight portion 25b of the link cam groove 25 of the slide cam 21 rearward. The cam projection pin 74b of the third arm 74 remains held at the starting point of the fourth cam portion 66d of the cam member 63 (see FIG. 40).

  The slide cam 21 is further moved forward by the rotation of the drive motor 17 (see FIG. 41).

  The link mechanism 71 is operated by the forward movement of the slide cam 21 (see FIG. 42), and the engagement shaft 75a of the fourth arm 75 is moved from the rear straight portion 25b in the link cam groove 25 of the slide cam 21 to the base end. It is relatively moved to the portion 25a. The cam projection pin 74b of the third arm 74 is moved along the second path 68 of the cam member 63 from the start point of the fourth cam portion 66d toward the start point of the first cam portion 66a.

  At this time, the cam projecting pin 74b of the third arm 74 is moved along the second path 68 in a state of being in contact with the outer wall portion 70 of the cam member 63, and the angle α (the angle between the first arm 72 and the third arm 74) is formed. 42) does not change. Further, the angle β (see FIG. 42) formed by the first arm 72 and the second arm 73 does not change.

  In this way, the first tension coil spring 76 and the second tension coil spring 77 that support the eject lever 55 via the rotary base 51 in the direction in which the disc-shaped recording medium 100 is pressed forward are supported. Since the angles α and β formed by the arm 72 and the third arm 74 or the second arm 73 are not changed, the urging force of the first tension coil spring 76 and the second tension coil spring 77 against the disc-shaped recording medium 100 is suppressed. Is done. Therefore, the disc-shaped recording medium 100 rotates the eject lever 55 in the R2 direction by the driving force of the driving motor 17 in a state where the biasing force of the first tension coil spring 76 and the second tension coil spring 77 is suppressed. Will move forward.

  By the operation of the link mechanism 71 described above, the rotation base 51 is rotated integrally with the eject lever 55 in the R2 direction, and is pressed by the eject lever 55 to move the disc-shaped recording medium 100 forward. At this time, the centering lever 33 is rotated in the R1 direction by the urging force of the return spring 39, and the load lever 29 is rotated in the R1 direction with the forward movement of the disc-shaped recording medium 100, so that the engagement pin 30a is camped. The plate 22 is moved to the large opening 28 a in the cam hole 28.

  The centering base 45 is slidably contacted with the disc-shaped recording medium 100 by the forward movement of the disc-shaped recording medium 100 and rotated in the R2 direction.

  The urging force control lever 38 is rotated in the R2 direction as the cam plate 22 moves forward, and the first sliding pin 38a relatively moves behind the inclined engagement portion 28f in the cam hole 28 of the cam plate 22. Will be moved to.

  A part of the disc-shaped recording medium 100 protrudes from the disc insertion opening 9a of the front panel 9 by moving forward.

  Subsequently, the drive motor 17 is rotated in the reverse direction, and the slide cam 21 is further moved forward (see FIG. 43).

  The link mechanism 71 is operated by the forward movement of the slide cam 21, and the cam projection pin 74b of the third arm 74 continues to move along the second path 68 of the cam member 63 toward the starting point of the first cam portion 66a. (See FIG. 44).

  At this time, the cam projection pin 74b of the third arm 74 is moved along the second path 68 in a state of being in contact with the outer wall portion 70 of the cam member 63, and the engagement projection 74a of the third arm 74 is moved to the second arm. The angle α (see FIG. 44) formed by the first arm 72 and the third arm 74 and the first arm 72 and the second arm 72 are moved in contact with the opening edge of the insertion engagement hole 73a formed in the head 73. The angle β (see FIG. 44) formed by the arm 73 does not change. Therefore, the disc-shaped recording medium 100 rotates the eject lever 55 in the R2 direction by the driving force of the driving motor 17 in a state where the biasing force of the first tension coil spring 76 and the second tension coil spring 77 is suppressed. Will move forward.

  As described above, the outer wall portion 70 of the cam member 63 restricts the cam projection pin 74 b of the third arm 74, and the opening edge of the insertion engagement hole 73 a formed in the arm 73 is engaged with the third arm 74. In order to restrict the protrusion 74 a, the outer wall 70 and the insertion engagement hole 73 a are connected to the disk-shaped recording medium 100 so that the urging force of the first tension coil spring 76 and the second tension coil spring 77 is suppressed. It functions as a position restricting means for restricting the position of each arm.

  By the operation of the link mechanism 71 described above, as shown in FIG. 43, the rotary base 51 is rotated in the R2 direction integrally with the eject lever 55, and is pressed by the eject lever 55, so that the disc-shaped recording medium 100 is further moved forward. It will be moved. The centering lever 33 is further rotated in the R1 direction by the biasing force of the return spring 39, and the load lever 29 is further rotated in the R1 direction as the disc-shaped recording medium 100 moves forward.

  At this time, in the disk receiving member 57 supported by the eject lever 55, the guide protrusion 60 is positioned above the table portion 15a of the disk table 15 or above the base chassis 13, and the action portion 59 is in contact with the upper surface of the mechanical chassis 12. (See FIG. 45). The action part 59 is in contact with the upper surface of the mechanical chassis 12.

  Accordingly, since the action portion 59 is in contact with the upper surface of the mechanical chassis 12, the guide protrusion 60 is held in a substantially horizontal state and is spaced upward from the upper surface of the table portion 15 a of the disk table 15 and the upper surface of the base chassis 13. ing.

  Thus, when the disc-shaped recording medium 100 is ejected, when the guide projecting piece 60 passes over the table portion 15a, the guide projecting piece 60 is separated upward from the upper surface of the table portion 15a and the upper surface of the base chassis 13. The guide protrusion 60 does not enter the gap between the table portion 15a and the base chassis 13, and the reliability of the ejection operation of the disc-shaped recording medium 100 by the eject lever 55 can be improved.

  Further, a disk receiving member 57 having an action part 59 and a guide protrusion 60 is provided, and the height position of the guide protrusion 60 with respect to the base chassis 13 is changed according to the position of the action part 59. Can be executed.

  The disc-shaped recording medium 100 is projected forward from the disc insertion opening 9a of the front panel 9 by moving forward with respect to the center hole 100a.

  Further, the drive motor 17 is rotated, and the slide cam 21 is moved further forward (see FIG. 46).

  The link mechanism 71 is operated by the forward movement of the slide cam 21 (see FIG. 47), and the cam projection pin 74b of the third arm 74 is in contact with the outer wall portion 70 along the second path 68 of the cam member 63. It is moved to the starting point of the first cam portion 66a.

  At this time, the angle α (see FIG. 47) formed by the first arm 72 and the third arm 74 and the angle β (see FIG. 47) formed by the first arm 72 and the second arm 73 do not change, and are disc-like. The recording medium 100 moves forward by the pivoting operation of the eject lever 55 in the R2 direction by the driving force of the driving motor 17 in a state where the biasing force of the first tension coil spring 76 and the second tension coil spring 77 is suppressed. Is done.

  Due to the operation of the link mechanism 71, the rotary base 51 is further rotated in the R2 direction integrally with the eject lever 55, and is pressed by the eject lever 55 to move the disc-shaped recording medium 100 further forward. The centering lever 33 is further rotated in the R1 direction by the urging force of the return spring 39 to the position where the regulated protrusion 34f is in contact with the pressing piece 26a of the cam plate 22.

  The load lever 29 is further rotated in the R1 direction as the disc-shaped recording medium 100 moves forward.

  As the disc-shaped recording medium 100 moves forward, the portion including the center hole 100a protrudes from the disc insertion opening 9a of the front panel 9.

  At this time, the disk receiving member 57 supported by the eject lever 55 has the action portion 59 positioned above the base chassis 13, and the guide projecting piece 60 passes through the table portion 15 a of the disk table 15 to be above the base chassis 13. Thus, the action portion 59 and the guide protrusion 60 protrude obliquely downward and are in contact with the upper surface of the base chassis 13 (see FIG. 48).

  Due to the forward movement of the slide cam 21, the operation of the first detection switch 81 is released and turned off, and the rotation of the drive motor 17 is stopped.

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

  When the disc-shaped recording medium 100 is removed from the disc drive device 5, the load lever 29 is moved in the R2 direction by the urging force of the leaf spring 32 to a position where the engagement pin 30 a contacts the rear opening edge of the cam hole 28 of the slide cam 21. It is rotated.

  In a state where the rotation of the drive motor 17 is stopped, each part of the disk drive device 5 returns to the initial state (see FIG. 19) before the disk-shaped recording medium 100 is inserted from the disk insertion slot 9a of the front panel 9.

  As described above, in the disk drive device 5, the rotation of the eject lever 55 by the driving force of the driving motor 17 in a state where the urging force of the first tension coil spring 76 and the second tension coil spring 77 is suppressed. Since the disk-shaped recording medium is ejected by the moving operation, there is no problem that the discharge amount of the disk-shaped recording medium when the disk-shaped recording medium 100 is ejected by the biasing force of the spring can be changed. The discharge amount of the medium 100 from the disk insertion opening 9a can be kept constant.

  Further, the engagement state of the engagement protrusion 74 a of the third arm 74 with respect to the insertion engagement hole 73 a of the second arm 73 and the engagement of the cam protrusion pin 74 b of the third arm 74 with respect to the outer wall portion 70 of the cam member 63. Since the position of each arm of the link mechanism 71 is regulated by the combined state, the urging force of the first tension coil spring 76 and the second tension coil spring 77 against the disc-shaped recording medium 100 is suppressed during ejection. The position of each arm can be regulated reliably and easily.

  Further, in the disk drive device 5, the cam projecting pin 74 b of the third arm 74 is moved along the first path 67 of the cam engagement groove 66 when the disk-shaped recording medium 100 is loaded, and the disk-shaped recording medium 100. Since the cam projection pin 74b of the third arm 74 is moved along the second path 68 at the time of ejection, the movement path of the cam projection pin 74b during loading and ejection is a different path, and the operation is clear. The operation reliability can be improved.

  Furthermore, in the disk drive device 5, since the cam projecting pin 74b of the third arm 74 goes around the cam engagement groove 66 from the start of loading to the end of ejection, the loading is started. The cam projection pin 74b can be reliably returned to the initial position before the operation is started.

  In the disk drive device 5, the torsion coil spring 78 is attached when the cam projection pin 74 b of the third arm 74 is moved to the start point of the fourth cam portion 66 d of the cam engagement groove 66. The cam projecting pin 74 b is urged in a direction in contact with the outer wall 70 by the force. Accordingly, since the cam projecting pin 74b is surely directed to the second path 68 after being moved along the first path 67, the reliability of the operation can be improved.

  In addition, in the disk drive device 5, regardless of the position of the cam projection pin 74b of the third arm 74 with respect to the cam engagement groove 66, the cam projection pin 74b is rotated when the drive motor 17 is rotated in the forward rotation direction. Is moved to the starting point of the fourth cam portion 66d, and when the drive motor 17 is rotated in the reverse direction, the cam projection pin 74b is moved to the starting point of the first cam portion 66a. Therefore, the position of the cam projection pin 74b is determined according to the rotation direction of the drive motor 17, and the position of the cam projection pin 74b can be easily and reliably detected.

  In the disk drive device 5, the biasing force of the return spring 39 against the centering lever 33 is controlled using the biasing force control lever 38 that is operated according to the insertion position of the disk-shaped recording medium 100 with respect to the disk drive device 5. Therefore, the urging force of the return spring 39 can be changed as necessary, and the centering of the disk-shaped recording medium 100 is stabilized and the good insertion property of the disk-shaped recording medium 100 into the disk drive device 5 is achieved. Can be secured.

  Although an example in which the biasing force of the return spring 39 is greater after insertion than before insertion of the disk-shaped recording medium 100 into the disk drive device 5 has been described above, the biasing force control lever 38 is used. Thus, conversely, the biasing force of the return spring 39 can be set to be smaller after the insertion than before the disk-shaped recording medium 100 is inserted into the disk drive device 5.

  Further, in the disk drive device 5, the slider 20 that moves in the same direction as the moving direction of the disk-shaped recording medium 100 is provided, and the urging force control lever 38 is operated in accordance with the movement of the slider 20, so that the centering lever Since the urging force of the return spring 39 with respect to 33 is controlled, the urging force of the return spring 39 can be reliably controlled according to the insertion position of the disk-shaped recording medium 100 with respect to the disk drive device 5.

  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.

FIG. 2 to FIG. 48 show the best mode for carrying out the present invention, and this figure is a perspective view of an electronic apparatus. 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. It is a disassembled perspective view which shows a part of internal mechanism of a disk drive apparatus. It is a disassembled perspective view which shows a mechanical chassis, a base chassis, a link mechanism, etc. It is an expansion disassembled perspective view which shows a slide cam, a raising / lowering lever, a connection lever, etc. It is a perspective view which shows the internal mechanism of a disk drive apparatus. It is a schematic plan view which shows the internal mechanism of a disk drive apparatus. It is an expansion disassembled perspective view which shows a slider. It is an expansion disassembled perspective view which shows a cam plate, an urging | biasing force control lever, a load lever, etc. It is an expansion perspective view which shows a centering lever and a biasing force control lever. It is an expansion perspective view which shows a raising / lowering lever. It is an expansion perspective view which shows a centering base. It is an expansion disassembled perspective view which shows a rotation base, an eject lever, and each member supported by this eject lever. It is a general | schematic expanded side view which shows the state in which the force from the downward direction is not provided to the disk receiving member in part in cross section. It is a general | schematic enlarged side view which shows the state in which the force from the downward direction is provided to the disk receiving member in part in cross section. It is an expanded sectional view which shows the cam part of a cam member. It is an expansion perspective view which shows a link mechanism. FIG. 20 to FIG. 48 show the operation of the disk drive apparatus, and this figure is a schematic plan view showing an initial state. It is a schematic side view which shows initial states, such as a base chassis. It is a general | schematic enlarged plan view which shows the initial states of a link mechanism etc. 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. 23 is a schematic plan view showing a state in which rotation of the drive motor in the forward rotation direction is started following FIG. 22. FIG. 23 is a schematic enlarged plan view showing the state of the link mechanism and the like when rotation of the drive motor in the normal rotation direction is started following FIG. 22. FIG. 24 is a schematic plan view showing a state when the drive motor is rotated in the forward rotation direction following FIG. 23. FIG. 24 is a schematic enlarged plan view showing the state of the link mechanism and the like when the drive motor is rotated in the forward rotation direction following FIG. 23. FIG. 26 is a schematic plan view showing a state when the drive motor is rotated in the forward rotation direction following FIG. 25. FIG. 26 is a schematic enlarged plan view showing the state of the link mechanism and the like when the drive motor is rotated in the forward rotation direction following FIG. 25. FIG. 28 is a schematic plan view showing a state when the drive motor is rotated in the forward rotation direction following FIG. 27. FIG. 28 is a schematic enlarged plan view showing the state of the link mechanism and the like when the drive motor is rotated in the forward rotation direction following FIG. 27. FIG. 30 is a schematic plan view showing a state when the drive motor is rotated in the forward rotation direction following FIG. 29. FIG. 30 is a schematic enlarged plan view showing the state of the link mechanism and the like when the drive motor is rotated in the forward rotation direction following FIG. 29. It is a schematic plan view which shows a state when rotation to the normal rotation direction of a drive motor is stopped. It is a general | schematic enlarged plan view which shows the states of a link mechanism etc. when rotation to the normal rotation direction of a drive motor is stopped. It is a schematic side view which shows the state of a base chassis etc. when a disk-shaped recording medium is chucked. It is a schematic side view showing the state of the base chassis and the like when the disk-shaped recording medium is in a position where chucking is completed and recording / reproduction is possible. It is a schematic plan view which shows the state by which rotation to the reverse direction of the drive motor was started. It is a general | schematic enlarged plan view which shows the states of a link mechanism etc. when rotation to the reverse direction of a drive motor is started. FIG. 38 is a schematic plan view showing a state when the drive motor is rotated in the reverse direction following FIG. 37. FIG. 38 is a schematic enlarged plan view showing the state of the link mechanism and the like when the drive motor is rotated in the reverse direction following FIG. FIG. 40 is a schematic plan view showing a state when the drive motor is rotated in the reverse direction following FIG. 39. FIG. 40 is a schematic enlarged plan view showing the state of the link mechanism and the like when the drive motor is rotated in the reverse direction following FIG. 39. FIG. 42 is a schematic plan view showing a state when the drive motor is rotated in the reverse direction following FIG. 41. FIG. 42 is a schematic enlarged plan view showing the state of the link mechanism and the like when the drive motor is rotated in the reverse direction following FIG. 41. It is a general | schematic expanded side view which shows the state of a disk receiving member etc. in part in cross section. It is a schematic plan view which shows a state when rotation to the reverse direction of a drive motor is stopped. It is a general | schematic enlarged plan view which shows the states of a link mechanism etc. when rotation to the reverse direction of a drive motor is stopped. FIG. 46 is a schematic enlarged side view illustrating a state of the disk receiving member and the like subsequent to FIG. 45 with a part thereof in cross section.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 100 ... Disc-shaped recording medium, 1 ... Electronic device, 5 ... Disc drive apparatus, 9a ... Disc insertion slot, 12 ... Mechanical chassis, 13 ... Base chassis, 14 ... Spindle motor, 15 ... Disc table, 55 ... Eject lever (support) Member), 55h ... pressing protrusion, 57 ... disc receiving member, 58 ... supported part, 59 ... action part, 60 ... guide protrusion (guide means), 62 ... pressing member

Claims (3)

A disk table on which a loaded disk-shaped recording medium inserted through a disk insertion slot is mounted; a spindle motor that is fixed to a motor shaft and rotates the disk table;
A base chassis in which a spindle motor is fixed and movable in a substantially axial direction of the spindle motor;
A mechanical chassis that supports the base chassis movably in a substantially axial direction of the spindle motor;
A support member that supports the inserted disk-shaped recording medium and is moved on the base chassis and the mechanical chassis;
A slider for moving the disc-shaped recording medium,
The slider is composed of a slide cam formed long in the front-rear direction and a plate-like cam plate.
Guiding means capable of guiding the disc-shaped recording medium inserted from the disc insertion opening and being separated from the base chassis when the disc-shaped recording medium is ejected is provided ,
Providing a pressing protrusion for pressing the disk-shaped recording medium inserted from the disk insertion port into the support member from the thickness direction of the disk-shaped recording medium, and providing the guide means at a position facing the pressing protrusion;
An action portion slidable on the mechanical chassis when the support member is moved; a guide protrusion that functions as the guide means; and a supported portion that is supported by the support member and connects the guide protrusion and the action portion. A disc receiving member for holding the disc-shaped recording medium inserted from the disc insertion slot together with the pressing protrusion of the eject lever;
Provided with a pressing member that is attached to the support member and presses the disc receiving member in a direction in which the guide protrusion separates from the pressing protrusion;
When ejecting the disc-shaped recording medium, the disc receiving member has the guide protrusions passed over the mechanical chassis, the base chassis and the disc table,
When the guide projection piece is passed over the disk table at the time of ejection, the action portion comes into contact with the mechanical chassis and the disc receiving member is moved in the direction in which the guide projection piece approaches the press projection piece against the pressing force of the press member
When the guide protrusion passes through the disk table during ejection, the operating portion is separated from the mechanical chassis, and the disk receiving member is moved by the pressing member in a direction away from the pressing protrusion. Disk drive device. The disk drive device according to claim 1 , wherein when the disk-shaped recording medium is inserted from the disk insertion slot, the tip of the guide protrusion of the disk receiving member is brought into contact with the base chassis. An electronic device including a disk drive device that records or reproduces information signals on a disk-shaped recording medium, or both,
A disc table on which a disc-shaped recording medium loaded through a disc insertion slot is loaded;
A spindle motor fixed to the motor shaft and rotating the disk table; and
A base chassis in which a spindle motor is fixed and movable in a substantially axial direction of the spindle motor;
A mechanical chassis that supports the base chassis movably in a substantially axial direction of the spindle motor;
A support member that supports the inserted disk-shaped recording medium and is moved on the base chassis and the mechanical chassis;
A slider for moving the disc-shaped recording medium,
The slider is composed of a slide cam formed long in the front-rear direction and a plate-like cam plate.
Guiding means capable of guiding the disc-shaped recording medium inserted from the disc insertion opening and being separated from the base chassis when the disc-shaped recording medium is ejected is provided ,
Providing a pressing protrusion for pressing the disk-shaped recording medium inserted from the disk insertion port into the support member from the thickness direction of the disk-shaped recording medium, and providing the guide means at a position facing the pressing protrusion;
An action portion slidable on the mechanical chassis when the support member is moved; a guide protrusion that functions as the guide means; and a supported portion that is supported by the support member and connects the guide protrusion and the action portion. A disc receiving member for holding the disc-shaped recording medium inserted from the disc insertion slot together with the pressing protrusion of the eject lever;
Provided with a pressing member that is attached to the support member and presses the disc receiving member in a direction in which the guide protrusion separates from the pressing protrusion;
When ejecting the disc-shaped recording medium, the disc receiving member has the guide protrusions passed over the mechanical chassis, the base chassis and the disc table,
When the guide projection piece is passed over the disk table at the time of ejection, the action portion comes into contact with the mechanical chassis and the disc receiving member is moved in the direction in which the guide projection piece approaches the press projection piece against the pressing force of the press member
When the guide protrusion passes through the disk table during ejection, the operating portion is separated from the mechanical chassis, and the disk receiving member is moved by the pressing member in a direction away from the pressing protrusion. Electronic equipment.

Images