JP2005322318A - Disk recording and/or play-back device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a thread motor from being fallen off from a chassis due to vibration or shocks. <P>SOLUTION: This disk recording and/or play-back device 101 is provided with a chassis 103 for supporting a holder 102 to house a disk 1, and a recording/reproducing means 104 attached to the chassis 3 to execute recording/reproducing. The recording/reproducing means 104 is provided with a spindle motor 151 for rotating the disk 1, an optical pickup 152 for recording/reproducing information in the optical disk 1, and a thread motor 153 for moving the optical pickup 152. The chassis 103 is provided with a motor falling-off preventing member 211 for preventing the further movement of the motor when the spindle motor 151 and/or the thread motor 153 falls off from the chassis 103. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a disk recording and / or reproducing apparatus capable of preventing a sled motor attached to a chassis from falling off the chassis due to an impact at the time of dropping or the like.

A spindle motor that rotates a disk-shaped recording medium of the disk cartridge on a chassis that supports a cartridge holder for inserting and holding the disk cartridge so as to be movable between a cartridge insertion / extraction position and a recording / reproducing position, and the disk-shaped recording A disk constructed by attaching recording and / or reproducing means comprising an optical pickup for recording and / or reproducing information on a medium, and a thread motor for moving the optical pickup in the radial direction of the disk-shaped recording medium. Recording and / or playback devices are known. (For example, see Patent Document 1)
JP-A-9-223370

  Incidentally, in the conventional disk recording and / or reproducing apparatus as described above, the spindle motor 151 is generally attached to a stator substrate 161 as a motor support plate as shown in FIG. The outer periphery of the substrate 161 is superposed on the lower surface of the chassis 103 and attached to the upper surface of the chassis 103 with screws 155 or the like. A disk table 170 is provided on the upper surface of the spindle motor 151.

  As shown in FIG. 30, the thread motor 153 is generally attached to a stator substrate 191 as a motor support plate, and the outer periphery of the stator substrate 191 is overlapped with the lower surface of the chassis 103 to screw. It is attached to the lower surface of the chassis 103 by 155 or an adhesive. An output first gear 185 is provided on the lower surface of the thread motor 153.

  As described above, the thread motor 153 is attached in a state where the outer peripheral portion of the stator substrate 191 is superposed on the lower surface of the chassis 103 and suspended on the lower surface of the chassis 103 by screws 155 or the like. If the screw 155 or the like is loosened due to an impact or the like, the thread motor 153 may fall off from the lower surface of the chassis 103.

  An object of the present invention is to provide a disk recording and / or reproducing apparatus in which a sled motor or the like does not fall out of a chassis even if a screw or the like is loosened due to vibration or impact.

The disk recording and / or reproducing apparatus of the present invention includes a cartridge holder for inserting and holding a disk cartridge, a chassis that supports the cartridge holder so as to be movable between a cartridge insertion / extraction position and a recording / reproducing position, and the chassis. And a recording and / or reproducing means for recording and / or reproducing the disk cartridge, wherein the recording and / or reproducing means is a spindle motor for rotating the disk-shaped recording medium of the disk cartridge; In a disk recording and / or reproducing apparatus, comprising: an optical pickup for recording and / or reproducing information on the disk-shaped recording medium; and a sled motor for moving the optical pickup in the radial direction of the disk-shaped recording medium. ,
The chassis is provided with a motor drop prevention member that prevents further movement of the spindle motor and / or sled motor when the spindle motor and / or sled motor moves in the direction of dropping from the chassis.

  In particular, the first gear is attached to the top surface of the thread motor, and the disk pickup and / or playback is configured to move the optical pickup of the thread motor through the second gear meshing with the first gear. In the apparatus, the motor drop-off preventing member is disposed at a position facing the second gear with the rotation axis of the thread motor as a center. Further, the motor drop-off prevention member was cut out and raised in the chassis or outsert-molded in the chassis.

  When the spindle motor and / or sled motor attached to the chassis moves in the direction of dropping off from the chassis, the motor drop-off prevention member prevents further movement of the spindle motor and / or sled motor in the falling off direction from the chassis. Prevent the spindle motor and / or sled motor from falling off.

  In particular, the first gear is attached to the top surface of the sled motor, and the optical pickup is moved by the sled motor via the second gear meshing with the first gear. In the apparatus, since the motor drop-off prevention member is disposed at a position facing the second gear with the rotation axis of the thread motor as a center, the spindle motor is caused by the synergistic effect of the second gear and the motor drop-off prevention member. It can be more reliably prevented from falling off the chassis.

  Moreover, the increase in the number of parts by providing a drop-off prevention member can be prevented by forming the motor drop-off prevention member by cutting and raising the chassis.

  In addition, by outsert-molding the motor drop-off prevention member on the chassis, the motor drop-off prevention member has an appropriate elasticity so that the motor drop-off prevention member does not get in the way when the spindle motor is attached to the chassis. It is possible to easily release the motor drop-off prevention member.

Hereinafter, the present invention includes (1) a schematic configuration of a disk recording and / or reproducing apparatus, (2) a configuration of recording and / or reproducing means (spindle motor, sled motor, optical pickup), and (3) a configuration of a motor drop-off preventing member. (4) Configuration of recording medium cartridge, (5) Configuration of cartridge holder, (6) Configuration of chassis, (7) Configuration of eject lever, (8) Configuration of biasing means and eject lever locking means, (9 ) The configuration of the locking release means, and (10) other embodiments and other configurations will be described in this order.
(1) Schematic configuration of the disk recording and / or reproducing device,
FIG. 1 is a perspective view of a disk recording and / or reproducing apparatus according to the present invention, FIG. 2 is a plan view seen from the back side, and FIG. 3 is an exploded perspective view. The disc recording and / or reproducing apparatus 101 includes a cartridge holder 102 for inserting and holding the disc cartridge 1, and a chassis 103 that supports the cartridge holder 102 so as to be movable between a cartridge insertion / extraction position and a recording / reproducing position, Recording and / or reproducing means 104 provided on the chassis 103 for recording and / or reproducing the disk cartridge 1, rotatable in the insertion / extraction direction of the disk cartridge 1 with respect to the chassis 103, and mounted on the chassis 103 The eject lever 105 is provided so as to be movable in the contact / separation direction and is rotated by being pushed by the disc cartridge 1 inserted into the cartridge holder 102. The eject lever 105 has a rotational force in the disc cartridge ejection direction and the eject lever 105. Above shear An urging means 106 that imparts an urging force in a direction approaching 103, an eject lever locking means 107 that locks the eject lever 105 rotated by the insertion of the disk cartridge 1 to the chassis 103, An unlocking means 108 for releasing the locking of the eject lever 105 by the eject lever locking means 107 when the cartridge holder 102 is rotated from the recording / reproducing position to the cartridge insertion / removal position, and the recording and / or reproducing means A motor dropout prevention member 211 (see FIG. 2) is provided to prevent the sled motor 153 constituting 104 from dropping out of the chassis 103.
(2) Configuration of recording and / or reproducing means (spindle motor, sled motor, optical pickup),
The recording and / or reproducing means 104 includes a spindle motor 151 that rotates the disk-shaped recording medium 2 of the disk cartridge 1, an optical pickup 152 that records and / or reproduces information on the disk-shaped recording medium 2, and an optical A sled motor 153 that drives the pickup 152.

As shown in FIG. 18, the spindle motor 151 is attached to a stator substrate 161 as a motor support plate. The outer periphery of the stator substrate 161 is overlaid on the lower surface of the chassis 103, and the chassis 155 is secured by screws 155 or the like. It is attached in a state of standing on the upper surface side of 103. The spindle motor 151 includes a cylindrical bearing portion 161a provided on the stator substrate 161, a bearing 162 attached to the inner periphery of the bearing portion 161a, and the cylindrical bearing portion 161a inserted into the central hole 163. In this state, the wiring board 164 placed on the stator substrate 161, the iron core coil 165 attached to the outer peripheral portion of the cylindrical bearing portion 161a, and the tip of the rotating shaft 166 inserted into the bearing 162 And a rotor assembly 167 mounted rotatably. A rotor magnet 168 that is paired with the iron core coil 165 is attached to the inner peripheral surface of the rotor assembly 167, and a disk table that magnetically chucks the hub 22 of the disk-shaped recording medium 2 by a chucking magnet 169 on the upper surface. 170 is attached.
A disk table 170 for magnet chucking the hub 22 of the disk-shaped recording medium 2 by a chucking magnet 169 is attached to the upper surface of the spindle motor 151.

  Further, as shown in FIG. 19, the thread motor 153 is attached to a stator substrate 191 as a motor support plate, and the outer periphery of the stator substrate 191 is overlapped with the lower surface of the chassis 103 by screws 155 or the like. The chassis 103 is attached to the lower surface of the chassis 103. The thread motor 153 includes a cylindrical bearing portion 191 a provided on the stator substrate 191, a bearing 192 attached to the inner periphery of the bearing portion 191 a, and the cylindrical bearing portion 191 a inserted into the central hole 193. In this state, the wiring board 194 placed on the stator substrate 191, the iron core coil 195 attached to the outer periphery of the cylindrical bearing 191, and the rotating shaft 196 inserted into the bearing 192 are rotated. And a rotor assembly 197 that can be attached. A rotor magnet 198 that is paired with the iron core coil 195 is provided on the inner surface of the rotor assembly 197.

  An output first gear 185 is attached to the lower surface (top surface) of the thread motor 153. The first gear 185 meshes with the second gear 184. A third gear 183 coaxial with the second gear 184 is provided on the upper surface of the second gear 184, and the third gear 183 is attached to the end of the lead screw 175 of the optical pickup 152 described below. 181 is engaged. The thread motor 153 rotates the lead screw 175 via the first gear 185, the second gear 184, the third gear 183, and the worm gear 181 to cause the optical pickup 152 to travel. .

As described above, the thread motor 153 is attached in a state where the outer peripheral portion of the stator substrate 191 is superposed on the lower surface of the chassis 103 and suspended on the lower surface of the chassis 103 by screws 155 or the like. If the screw 155 or the like is loosened due to vibration or impact, the thread motor 153 may fall off the lower surface of the chassis 103. The motor drop prevention member 211 prevents the motor from falling off.
(3) Configuration of motor dropout prevention member,
As shown in FIGS. 19 and 20, the motor drop prevention member 211 includes a vertical piece 212 formed substantially vertically along the outer peripheral surface of the thread motor 153 on the lower surface side of the chassis 103, and the vertical piece. The tip of the portion 212 is formed in a substantially L shape by the horizontal piece 213 bent at a substantially right angle toward the center of the thread motor 153, and the tip of the horizontal piece 213 is slightly It overlaps with the lower surface of the motor 153. If the amount of overlap of the horizontal piece portion 213 is large, the drop-off preventing action becomes large, but the length of the horizontal piece portion 213 is not limited to this because it is obstructive when attaching the thread motor 153 to the chassis 103. Determined in consideration of

  Further, the vertical piece portion 212 is made elastic so that the vertical piece portion 212 is bent and the horizontal piece portion 213 is in a so-called escape state so as not to interfere with the mounting of the sled motor 153 to the chassis 103. May be.

  The motor drop-off prevention member 211 is formed by cutting and raising the chassis 103 or by outsert molding on the chassis 103.

The motor drop-off prevention member 211 is disposed at a position facing the second gear 184 that meshes with the first gear 185 attached to the lower surface (top surface) of the thread motor 153. Due to the synergistic effect of the motor drop prevention member 211 and the second gear 184, the sled motor 153 is more reliably prevented from falling off.
(4) Disc cartridge configuration,
9 is a perspective view of the disk cartridge 1 as viewed from the upper half side, FIG. 10 is a perspective view of the disk cartridge 1 as viewed from the lower half side, and FIG. 11 is a recording and / or reproducing opening by sliding the shutter member. It is a perspective view of the open state.

  The disc cartridge 1 has a disc-shaped recording medium 2 and a recording in which the disc-shaped recording medium 2 is rotatably accommodated in a circular disc accommodating portion and a part of the disc-shaped recording medium 2 is exposed to the outside. And / or attached to the cartridge body 3 so as to be movable between a cartridge body 3 provided with a reproduction opening 34 and a position where the recording and / or reproduction opening 34 is closed and opened. The shutter member 4 and the shutter member 4 are engaged with a movement restricting portion 3e provided in the cartridge body 3 when the shutter member 4 is in a position to close the recording and / or reproducing opening 34. Is controlled to move in the direction to open the recording and / or reproducing opening 34 (see FIG. 14), and the shutter. An urging member 6 that urges the movement restricting member 5 in a direction to engage with a movement restricting portion 3e provided on the cartridge body 3, and a deformation preventing portion 7 that prevents the urging member 6 from being deformed by an external force. It is equipped with.

  The biasing member 6 is folded back so as to overlap the inside of the extension piece 6a via an extension piece 6a extended from one side of the shutter member 4 and a folding portion 6b provided at the tip of the extension piece 6a. And the elastic displacement piece 6c formed by this.

  The deformation preventing member 7 is disposed behind the front end portion of the urging member 6 and supports the urging member 6 from behind, thereby preventing the urging member 6 from being deformed by an external force.

  As shown in FIG. 12, in a state where the shutter member 4 closes the recording and / or reproducing opening 34, the urging member 6 is the tip of the elastic displacement piece 6c and the shutter. The pressed portion 57 provided on one end side of the movement restricting member 5 is pressed, and the shutter movement restricting member 5 is rotated clockwise about the mounting shaft 8, so that the other end side of the shutter movement restricting member 5 is rotated. The engaging portion 58 provided on the cartridge main body 3 is positioned at a position where it can engage with the movement restricting portion 3e provided on the cartridge main body 3. In this state, when the shutter member 4 is moved in the direction to open the recording and / or reproducing opening 34, the engaging portion 58 provided on the other end side of the shutter movement restricting member 5 becomes the cartridge main body. 3 is engaged with a movement restricting portion 3e provided in the position 3, and the movement of the shutter member 4 is prevented. Then, when the pressed portion 57 is pressed against the urging force of the elastic displacement piece 6c by the convex portion 117 of the unlocking member 116 provided on one side surface of the cartridge holder 102 described below, as shown in FIG. Further, the shutter movement restricting member 5 rotates counterclockwise around the mounting shaft 8 to release the engaging portion 58 to a position where it cannot be engaged with the movement restricting portion 3e. The member 4 is movable in the direction in which the recording and / or reproducing opening 34 is opened.

  Next, each part of the disk-shaped recording medium 2, the cartridge main body 3, the shutter member 4, the shutter movement restricting member 5, the urging member 6, and the deformation preventing member 7 will be described in detail.

  As shown in FIG. 9, the disc-shaped recording medium 2 is configured by attaching a chucking hub 22 to the center of an optical disc 21 on which game software or the like is recorded. The optical disk 21 has a small diameter of about 50 mm. The chucking hub 22 is formed of a magnetic metal such as stainless steel attracted by a magnet.

  The cartridge body 3 is formed by abutting the peripheral walls 31 a and 32 a of the upper and lower halves 31 and 32. As shown in FIG. 12, arc-shaped ribs 31b and 32b constituting a disk storage portion are provided inside the peripheral walls 31a and 32a.

  As shown in FIG. 11, the cartridge body 3 has an arcuate surface (semicircle) whose front surface 3a (a side surface on the insertion end side to a disk recording and / or reproducing device described later) has substantially the same radius of curvature as the optical disk 21. The left and right side surfaces 3b and 3c are formed in a flat surface parallel to each other, and the back surface 3d facing the front surface 3a is continuous with the left and right side surfaces 3b and 3c. It is formed on a gently continuous curved surface.

  A driving opening 33 is provided at the center of the lower half 32 so that the hub 22 of the disc-shaped recording medium 2 faces the outside. Further, a recording and / or reproducing opening 34 is provided so that the information recording surface of the optical disk 21 of the disk-shaped recording medium 2 faces the outside from the vicinity of the driving opening 33 to the one side surface 3c. ing.

  The hub 22 of the disc-shaped recording medium 2 is magnetically chucked on the disc table of the disc recording and / or reproducing apparatus through the driving opening 33. Further, information recording and / or reproduction is performed on the optical disc 21 of the disc-shaped recording medium 2 through the recording and / or reproducing opening 34 by an optical pickup of the disc recording and / or reproducing device.

  A concave step portion (hereinafter referred to as a first recess portion) 35 is provided from the outer surface 32c of the lower half 32 to the peripheral wall of the side surface 3c. The first recess 35 does not project the shutter member 4 described below from the outer surface 32b and the side surface 3c of the lower half 32. More specifically, the shutter member 4 is located on the outer surface 32c and side surface 3c side of the lower half 32. It is for mounting in a state where it is flush with the outer surface of the peripheral wall and restricts the movement range of the shutter member 4.

  The end of the first recess 35 on the drive opening 33 side is a second recess 36 that is deeper than the first recess 35. A bent portion 44 a provided at the tip of an opening opening / closing portion 44 of the shutter member 4 to be described below is inserted into the second recess portion 36. The second recessed portion 36 is closed above the bent portion 4 a by a shutter guide plate 37 attached to the lower half 32. The shutter guide plate 37 prevents the bent portion 44a at the tip of the opening opening / closing portion 44 from rolling up. The shutter guide plate 37 is also attached to the lower half 32 so as to be flush with the outer surface of the lower half 32.

  As shown in FIG. 14, the upper half 31 includes a guide groove 38 extending in the moving direction of the shutter member 4 on the peripheral wall 31 a on the side surface 3 c side. Further, the peripheral wall 32a on the side surface 3c side of the lower half 32 is removed, and an opening 39 for shutter member guide is formed between the peripheral wall 31a on the side surface 3c side of the upper half 31. Yes.

  Further, an unlocking member introduction groove 40 that is continuous with the opening 39 for guiding the shutter member is formed from the side surface 3c to the front surface 3a of the cartridge body 3, and the other side surface 3b of the cartridge body 3 has a function. An expansion groove 41 is provided. Further, as shown in FIG. 11, a pair of positioning holes 42 and 43 are provided on the outer surface of the lower half 32 on the front surface 3 a side.

  As shown in FIG. 14, the shutter member 4 includes a flat plate-shaped opening / closing portion 44 that opens and closes the recording / reproducing opening 34, and the opening / closing portion 44 is formed in a first recess of the lower half 32. An assembling portion 45 for assembling the cartridge main body 3 so as to be movable between a position where the recording and / or reproducing opening 34 is opened and a position where the recording and / or reproducing opening 34 is closed. I have.

  The assembly portion 45 includes a first moving guide piece 46 formed by bending one end side of the opening opening / closing portion 44 at a substantially right angle, and a distal end portion of the first moving guide piece 46 as the opening opening / closing portion. 44, and a second moving guide piece 47 formed by being bent substantially at a right angle in the same direction.

  The first movement guide piece 46 includes an opening 48 for pressing operation at which a pressed portion 57 of the shutter movement restricting member 5, which will be described in detail below, faces the central portion. On both sides of the first moving guide piece 46 in the shutter moving direction and at substantially the center in the thickness direction of the cartridge main body 3, the third and fourth moving guide pieces 47 are substantially parallel to the second moving guide piece 47. Movement guide pieces 49, 50 are provided, and retaining pieces 51a, 51b extending in a direction away from the opening opening / closing portion 44 are provided at the distal ends of the third and fourth movement guide pieces 49, 50. ing. A boss-like shaft portion 52 for rotatably mounting the shutter movement restricting member 5 is provided on the lower surface of the fourth movement guide piece 50. Further, a bent-up portion 44a is provided at the end portion of the opening opening / closing portion 44 on the side opposite to the assembly portion 45 to prevent the rolling-up. The shutter member 4 is formed by bending a metal plate punched into a predetermined shape.

  As shown in FIG. 16, the shutter member 4 has the first movement guide piece 47 overlapped with the lock release member introduction groove 40 on the side surface 3 b of the cartridge body 3 to overlap the second movement guide piece 47. Is inserted into the guide groove 38 provided in the upper half 31, and the third and fourth movement guide pieces 49 and 50 are inserted into the cartridge body 3 from the opening 39 for the shutter member guide, A retaining piece 51 a provided at the tip of the third moving guide piece 49 is engaged with a groove 32 e provided on the bottom surface of the peripheral wall 31 a of the upper half 31, and the retaining piece provided at the tip of the fourth moving guide piece 50. The piece 51 b is slidably attached to the side surface 3 b of the cartridge body 3 by engaging the inner surface 32 f of the peripheral wall 31 a of the upper half 31.

  As shown in FIG. 10, when the shutter member 4 is slid to the front surface 3 a side of the cartridge body 3, the opening / closing portion 44 closes the recording / reproducing opening 34. As shown in FIG. 11, when the shutter member 4 is slid to the front surface 3 a side of the cartridge body 3, the recording and / or reproducing opening 34 is opened.

  As shown in FIGS. 14 and 15, the shutter movement restricting member 5 includes a flat plate-like main body portion 56 having a bearing hole 55 in the central portion, and a pressed portion 57 provided at one end portion of the main body portion 56. And an engaging portion 58 provided at the other end of the main body portion 56, and a protrusion 59 for preventing rotation at the end of the main body portion 56 on the pressed portion 57 side. The pressed portion 57 and the engaging portion 58 are formed by bending one end portion and the other end portion of the main body portion 56 in the same direction at a substantially right angle. The shutter movement restricting member 5 is formed by bending a metal plate punched into a predetermined shape.

As described above, the biasing member 6 is elastically displaced by the extension piece 6a extended from one side of the shutter member 4 and the folding portion 6b provided at the tip of the extension piece 6a. And a piece 6c. (See Figure 14)
The extension piece 6a is formed to be curved so as to enter the cartridge body 3 from the shutter member guide opening 39 when the shutter member 4 is assembled to the cartridge body 3. The elastic displacement piece 6c is folded back so as to be overlapped with the inner surface of the extension piece 6c, and a pressed portion 57 provided on one end side of the shutter movement restricting member 5 at the tip thereof. Is pressed so that the pressed portion 57 faces the opening 48 for pressing operation provided at the center of the first moving guide piece 46 of the shutter member 4. The spring constant of the biasing member 6 can be adjusted by adjusting the length of the elastic displacement piece 6c by the extension piece 6a.

FIG. 17 shows another embodiment of the disk cartridge. In this embodiment, the disk cartridge 1A does not include the shutter member 4. The other configuration is substantially the same as the configuration of the disk cartridge 1 having the shutter member 4, and a duplicate description is omitted.
(5) Configuration of cartridge holder,
As shown in FIG. 3, the cartridge holder 102 has a substantially square top plate (top plate) 102a and left and right sides formed by bending the left and right sides of the top plate 102a downward at a substantially right angle. Side plates (hereinafter referred to as first and second side plates) 102b, 102c and the lower ends of the first and second side plates 102b, 102c are bent inward at substantially right angles. A pair of left and right cartridge support portions 102d and 102e that support the left and right side portions of the lower surface of the inserted disc cartridge 1, and a receiving surface portion 102f formed by bending the front edges of these cartridge support portions 102d and 102e downward. , 102g. The upper surface plate 102a, the first and second side plates 102b and 102c, the pair of left and right cartridge support portions 102d and 102e, and the like form an insertion slot for the disc cartridge 1 and a storage portion 102k. A bridge plate 102m is attached to a position near the insertion opening of the pair of left and right cartridge support portions 102d and 102e so as to straddle both. The bridge plate 102m reinforces the pair of cartridge support portions 102d and 102e so as not to be easily deformed, and prevents the disc cartridge 1 from jumping out between the pair of cartridge support portions 102d and 102e. It has a function.

  A turtle shell-shaped opening 111 is formed by punching at the center of the upper surface plate 102a. The opening 111 is for reducing the weight of the cartridge holder 102.

  A pair of left and right first and second leaf springs 112 and 113 are provided on the left and right sides of the opening 111. The first and second leaf springs 112 and 113 are bent so as to enter the storage portion 102k, and press the upper surface of the disk cartridge 1 inserted into the storage portion 102k to press the disk cartridge 1. Is pressed against the cartridge support portions 102d and 102e. A pair of left and right third and fourth leaf springs 114 and 115 are provided on the front end side of the opening 111. The third and fourth leaf springs 114 and 115 are bent toward the upper side of the upper surface plate 102a, so that the cartridge holder 102 can be easily inserted and assembled into a cartridge holder storage portion or the like of an electronic device. Makes it possible to do. The first to fourth leaf springs 112 to 115 are formed by punching a part of the upper surface plate 102 a of the disk cartridge 1.

  Between the second leaf spring 113 and the second side plate 102 c of the cartridge holder 102, and the arc-shaped front surface 3 a of the disc cartridge 1 inserted into the cartridge holder 102 and the second side of the cartridge holder 102. The concave locking release means mounting portion 102h is formed in a space portion between the side plate 102c, so-called dead space. As shown in FIG. 5, a plurality of cylindrical boss-like protrusions 102n are formed on the second side plate 102c of the cartridge holder 102 facing the locking release means mounting portion 102h. The lock release means 108 inserts the boss-like protrusion 102n into the protrusion fitting hole 108g provided in the attachment portion 108a, and superimposes the overlapping portion 108b on the upper surface of the lock release means attachment portion 102h. The disc piece 1 inserted into the cartridge holder 102 is inserted by inserting the elastic piece portion 108c and the eject lever operating portion 108d into the cartridge holder 102 and caulking the tip of the boss-like projection 102n to expand the diameter. And a substantially triangular dead space formed between the arcuate front surface 3a and the side surface 3c of the cartridge body 3.

  Further, as shown in FIG. 3, an unlocking member 116 for releasing the lock of the shutter member 4 by the shutter movement restricting member 5 of the disk cartridge 1 is attached to the second side plate 102c of the cartridge holder 102. .

  The unlocking member 116 is formed of a leaf spring material and has a boss-like protrusion 102n provided on the second side face plate 102c of the cartridge holder 102 in the same manner as the attachment portion 108a of the locking release means 108. One end portion in the direction is fixed to the second side plate 102c of the cartridge holder 102. The unlocking member 116 extends to the vicinity of the cartridge insertion opening along the second side plate 102c of the cartridge holder 102, and a convex portion 117 having a substantially V-shape in plan view is provided at the tip thereof. ing. The convex portion 117 enters the cartridge holder 102 through a notch window portion 118 provided on the second side plate 102 c of the cartridge holder 102. When the disc cartridge 1 is inserted into the cartridge holder 102, the pressed portion 57 of the shutter movement restricting member 5 is pressed by the convex portion 117 of the unlocking member 116 as shown in FIG. unlock.

  A pair of positioning holes 119 are formed in the pair of left and right cartridge support portions 102d and 102e of the cartridge holder 102, and positioning pins 120 provided on the chassis 103 described below are provided in the pair of positioning holes 119. Inserted.

In addition, the cartridge holder 102 is rotatably attached to a chassis 103 described below at the end of the cartridge holder 102 opposite to the cartridge insertion opening of the first and second side plates 102b and 102c. Bearing holes 121 and 122 are provided.
(6) Chassis configuration,
The chassis 103 is formed in a substantially square shape by a metal plate. Damper attachment portions 131 are provided at the four corners of the chassis 103, and rubber dampers 132 are attached to the damper attachment portions 131. Left and right side walls 133, 134 positioned outside the first and second side plates 102 b, 102 c of the cartridge holder 102 are provided on the left and right sides of the chassis 103. A pair of bearing portions 135 and 136 for rotatably mounting the cartridge holder 102 is provided on one end side of 134, and a shaft 137 provided on the inner surface of these bearing portions 135 and 136 is provided on the cartridge holder 102. The cartridge holder 102 is supported so as to be rotatable between the cartridge insertion / extraction position and the recording / reproducing position.

The chassis 103 includes positioning pins 120 that enter the positioning holes 119 provided in the pair of left and right cartridge support portions 102d and 102e of the cartridge holder 102 when the cartridge holder 102 is moved to the recording / reproducing position. .
(7) Configuration of the eject lever
When the disc cartridge 1 is inserted, the eject lever 105 is pushed by the front surface 3a of the cartridge body 3 and rotates against the urging force of the urging means 106 described below, and the eject lever locking means described later. 107 is locked so that it cannot rotate back and after the recording and / or reproduction is finished, the locking by the eject lever locking means 107 is released by the locking releasing means 108 described above and the urging means 106. The disk cartridge 1 is ejected from the cartridge holder 102 by rotating back by the urging force.

  As shown in FIG. 3, the eject lever 105 is provided with a substantially V-shaped flat plate-shaped main portion 105a that overlaps the upper surface of the chassis 103, and an arm portion 105b provided at one end of the flat plate-shaped main portion 105a. A pressed portion 105c that is pressed by the front surface 3a of the cartridge body 3, a bearing hole 105d provided on the other end side of the flat plate-like main portion 105a, and the pressed portion 105c via the bearing hole 105d. And an operated portion 105e that is unlocked by an eject lever operating portion 108d of the unlocking means 108.

  The eject lever 105 is attached to the upper surface of the chassis 103 so as to be rotatable by a shaft 105f, and the central portion of the front surface 3a of the cartridge main body 3 of the disc cartridge 1 inserted into the cartridge holder 102 is covered by the cover. It comes into contact with the pressing portion 105c. The eject lever 105 is attached to the upper surface of the chassis 103 so that the flat plate-like main portion 105a can be lifted to a position where the locking by the eject lever locking means 107 can be released by the shaft 105f. ing.

The eject lever 105 is configured as described above, and, as shown in FIG. 21, the cartridge holder in the cartridge insertion / extraction position (the cartridge holder 102 is inclined at a predetermined inclination angle θ with respect to the chassis 103). When the disc cartridge 1 is inserted into the cartridge 102, as shown in FIG. 22, the pressed portion 105c is pushed on the front surface 3a of the cartridge body 3 and rotates against the urging force of the urging means 106 described below. When the disk cartridge 1 is completely stored in the cartridge holder 102, as shown in FIG. 23, an eject lever locking means 107 described below is engaged with the outer surface 105j of the pressed portion 105e. At the same time, it is locked so that it cannot return and rotate. Then, even when the cartridge holder 102 is rotated to the recording / reproducing position, the cartridge holder 102 is maintained so that it cannot return and rotate, and the engagement release means 108 is engaged as shown in FIGS. The portion 108f engages with the lower surface 105n of the operated portion 105e of the eject lever locking means 105. When the cartridge holder 102 is rotated from the recording / reproducing position to the cartridge insertion / removal position after the recording and / or reproducing is completed, the eject lever 105 is engaged by the engaging portion 108f of the locking release means 108 as shown in FIG. Is lifted to release the locking of the eject lever 105 by the eject lever locking means 107. Accordingly, the eject lever 105 is rotated back by the urging force of the urging means 106 to eject the disc cartridge 1 from the cartridge holder 102.
(8) Configuration of biasing means and eject lever locking means,
The urging means 106 applies a turning force in the disc cartridge ejection direction to the eject lever 105 and an urging force that pulls the eject lever 105 in a direction approaching the chassis 103.

  As shown in FIGS. 6 to 8, a coil spring is used for the urging means 106 and is arranged on the lower surface side of the chassis 103, and one end side is provided on the chassis 103 with a first spring locking portion. The other end side is locked to a second spring locking portion 202 provided on the eject lever 105. The second spring locking portion 202 protrudes from the notch hole portion 203 provided in the chassis 103 to the lower surface side of the chassis 103.

  The eject lever locking means 107 is a flat main plate of the eject lever 105 when the eject lever 105 is rotated to a position where the disk cartridge 1 is completely stored in the cartridge holder 102 against the biasing means 106. The eject lever 105 is engaged with the outer side surface 105j of the portion 105a so as not to return and rotate.

The eject lever locking means 107 is formed by providing a boss-like convex portion on the upper surface of the chassis 103. The eject lever locking means 107 is disengaged from the outer surface 105j when the flat plate-like main portion 105a of the eject lever 105 is lifted from the chassis 103 against the urging force of the urging means 106. It is like that. The eject lever 105, which is disengaged from the eject lever locking means 107, rotates with the flat plate-like main portion 105 a riding on the eject lever locking means 107 and ejects the disc cartridge 1 from the cartridge holder 102. . The locking release means 108 sets the outer surface 105j of the flat plate-like main portion 105a of the eject lever 105 to be lifted from the chassis 103 against the urging force of the urging means 106.
(9) Configuration of locking release means,
The locking release means 108 is formed separately from the cartridge holder 102 by a leaf spring material and is attached to the cartridge holder 102.

  As shown in FIGS. 1, 4, and 5, the unlocking means 108 includes an attaching portion (fastening portion) 108a attached and fixed (fastened) to the side surface of the cartridge holder 102, and the attaching portion 108a. An overlapping portion 108b that is continuous with the upper surface 102a of the cartridge holder 102 formed by recessing the upper surface 102a of the cartridge holder 102 and is superimposed on the upper surface of the locking release means mounting portion 102h. An elastic piece portion 108c that continuously and continuously bends in an acute angle θ1 (approximately 80 °) and enters the cartridge holder 102 through a notch window portion 102i provided on the upper surface 102a of the cartridge holder 102 and extends toward the chassis 103. An eject lever operating portion 108d that is continuous with the elastic piece 108c being bent at an obtuse angle θ2 (approximately 160 °). Eteiru.

  The eject lever operating portion 108d is pressed by the side surface 105m of the operated portion 105e of the eject lever 105 described above, and the inclined surface portion 108e that bends the elastic piece portion 108c, and the side surface 105m of the operated portion 105e. An engaging portion 108f that engages with the lower surface 105n of the operated portion 105e when the pressing of the inclined surface portion 108e is released and the elastic piece portion 108c moves back is provided.

  As shown in FIG. 5, the elastic piece portion 186c is pressed against an elastic piece positioning portion 102j provided on the lower surface of the locking release means mounting portion 102h and bent so as to be substantially at a right angle so that a so-called preload is applied. And is positioned at a predetermined position. The locking release means 108 is formed by bending a spring plate material punched into a predetermined shape.

  As shown in FIG. 6, the eject lever operating portion 108d moves on the side surface 105m of the operated portion 105e of the eject lever 105, which will be described in detail later, in the process of moving the cartridge holder 102 from the cartridge insertion / extraction position to the recording / reproducing position. The inclined surface portion 108e is pressed and moves in the escape direction (arrow A direction). When the cartridge holder 102 moves to the cartridge recording / reproducing position, as shown in FIG. 7, the pressing of the inclined surface portion 108e by the side surface 105m of the operated portion 105e is released, and the elastic piece portion 108c moves back, that is, is elastic. Returning, the engaging portion 108f engages with the lower surface 105n of the operated portion 105e.

  When the cartridge holder 102 is moved from the cartridge insertion / extraction position to the recording / reproduction position after the recording and / or reproduction is completed, as shown in FIG. 8, the lower surface 105n of the operated portion 105e of the eject lever 105 is used. The pressed portion 105c is lifted, lifts from the upper surface of the chassis 103, and the eject lever 105 is unlocked by the eject lever retaining means 107. The eject lever 105 is rotated by the urging force of the urging means 106. The disk cartridge 1 is pushed out from the cartridge holder 102 by moving.

The unlocking means 108 is a substantially triangular dead space composed of an arc-shaped front surface 3a of the cartridge main body 3 of the disk cartridge 1 inserted into the cartridge holder 102, one side surface of the cartridge holder 102, and the front surface. It is arranged in the play space as. The cartridge holder 102 is rotatably attached to the chassis 103.
(10) Other embodiments and other configurations,
FIG. 24 shows another embodiment of the spindle motor 151. In this embodiment, the spindle motor 151 is made of synthetic resin outsert-molded in a spindle motor stator board forming hole (hereinafter referred to as a first stator board forming hole) 141 provided in the chassis 103. The stator substrate 161, a cylindrical bearing portion 161a formed integrally on the upper surface of the stator substrate 161, a bearing 162 attached to the inner periphery of the bearing portion 161a, and the cylindrical bearing portion 161a in the center. A wiring board 164 placed on the stator substrate 161 in a state of being inserted into the hole 163, an iron core coil 165 attached to the outer periphery of the cylindrical bearing portion 161a, and a rotating shaft 166 attached to the bearing 162. And a rotor 167 attached rotatably with the tip inserted. A rotor magnet 168 that is paired with the iron core coil 165 is attached to the inner peripheral surface of the rotor 167, and a disk table 170 that magnetically chucks the hub 22 of the disk-shaped recording medium 2 by a chucking magnet 169 on the upper surface. Is installed.

  FIG. 25 shows another embodiment of the thread motor 153. In this embodiment, the thread motor 153 is a synthetic resin that is outsert-molded in a hole for forming a stator substrate for a thread motor (hereinafter referred to as a second stator substrate forming hole) 142 provided in the chassis 103. Of the stator substrate 191, a cylindrical bearing portion 191a integrally formed on the upper surface of the stator substrate 191, a bearing 192 attached to the inner periphery of the bearing portion 191a, and the cylindrical bearing portion 191a. A wiring board 194 placed on the stator substrate 191 in a state inserted in the central hole 193, an iron core coil 195 attached to the outer periphery of the cylindrical bearing portion 191a, and a rotating shaft 196 on the bearing 192. And a rotor 197 that is rotatably attached in a state where the tip is inserted. A rotor magnet 198 that is paired with the iron core coil 195 is attached to the inner peripheral surface of the rotor 167, and the first gear 185 is attached to the upper surface. As indicated by a two-dot chain line, the chassis 103 is provided with a motor drop-off prevention member 211 similar to the case where the stator substrate 191 is attached to the chassis 103 with screws 155 or the like. The motor is prevented from falling off. Other configurations are the same as those in the basic embodiment.

  Even in the thread motor 153 in which the stator substrate 191 is formed integrally with the chassis 103 by outsert molding, the rotating shaft 196 may come out of the bearing 192. Therefore, the stator substrate 191 is integrated with the chassis 103 by outsert molding. It is meaningful to provide the motor drop prevention member 211 in the formed thread motor 153 as well. In the above-described embodiment, the motor drop prevention member 211 is not provided on the spindle motor 151 side. The spindle motor 151 is configured so that the outer periphery of the motor support plate 154 is connected to the chassis 103 as shown in FIG. The spindle motor 151 is attached to the lower surface of the chassis 103 so as to be superposed on the lower surface by the screws 155 or the like. This is because the motor drop-off preventing member 211 is not provided on the upper surface side of the chassis 103 because it falls off from the hole of the chassis 103 so as to fall off the lower surface side of the chassis 103. A drop prevention member 211 may be provided.

  26 to 28 show an electronic device 301 such as a game machine equipped with the disk recording and / or reproducing apparatus 101 of the present invention. The electronic device 301 is formed in a flat horizontally long shape, and as shown in FIG. 26, a display portion 303 such as a liquid crystal is disposed at the center of the outer casing 302 of the electronic device 301 on the front surface 302a side. A plurality of control keys 304 are arranged on both sides. As shown in FIG. 27, a lid 305 that can be opened and closed is provided at the center of the rear side 302 b of the outer casing 302 of the electronic device 301. As shown in FIG. 28, the cartridge holder 102 of the disk recording and / or reproducing apparatus 101 is attached to the lid 305, and the chassis 103 of the disk recording and / or reproducing apparatus 101 is attached to the outer casing 302 side. When the lid 305 is opened, the cartridge holder 102 is also rotated together and moved to the cartridge insertion / removal position.

The perspective view of a disk recording and / or reproducing | regenerating apparatus. The perspective view which looked at the disc recording and / or reproducing | regenerating apparatus from the back side. The disassembled perspective view of a disc recording and / or reproducing device. The perspective view of a latch release means. Sectional drawing of the state which attached the latch release means. A is a side view showing a state where the side surface of the operated portion of the eject lever is in contact with the inclined surface portion of the locking release means, B is the front view, and C is the perspective view. A is a side view showing a state in which an elastic piece is elastically restored and an engaging portion is engaged with a lower surface of an operated portion of an eject lever, B is a front view, and C is a perspective view. A is a side view showing a state where the lower surface of the operated portion of the eject lever is lifted by the engaging portion, and the eject lever is locked by the eject lever locking means, B is the front view, and C is the perspective view. . The perspective view of a disk cartridge. (Shutter closed state). The perspective view which looked at the disk cartridge from the back side. (Shutter closed state). The perspective view which looked at the disk cartridge from the back side. (Shutter open state). The top view of the state which has locked the shutter. The top view of the state which cancelled | released the lock | rock of the shutter. The exploded perspective view of the state before attaching a shutter. The perspective view of the state which attached the shutter movement control member to the shutter. Sectional drawing of the attachment state of a shutter. The perspective view of the disc cartridge which does not have a shutter. Sectional drawing of a spindle motor. Sectional drawing of a thread motor. The perspective view of the principal part. The side view of the state which set the cartridge holder to the cartridge insertion / extraction position. The top view which shows the state before an eject lever is pushed. The top view which shows the state after the eject lever was pushed. The exploded sectional view of other examples of a spindle motor. The exploded sectional view of other examples of a thread motor. The perspective view of an electronic device. The perspective view which looked at the electronic device from the back side. The perspective view of the state which opened the cover part. Sectional drawing of a prior art example. Sectional drawing of a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 101 ... Disc recording and / or reproducing | regenerating apparatus, 102 ... Cartridge holder, 103 ... Chassis, 104 ... Recording and / or reproducing means, 105 ... Eject lever, 106 ... Energizing means, 107 ... Eject lever locking means, 108 ... Engagement Stop release means, 211... Motor drop prevention member, 212... Vertical piece, 213.

Claims (5)

A cartridge holder for inserting and holding a disc cartridge;
A chassis supporting the cartridge holder so as to be movable between a cartridge insertion / extraction position and a recording / reproducing position;
Recording and / or reproducing means for recording and / or reproducing the disk cartridge attached to the chassis,
The recording and / or reproducing means includes: a spindle motor that rotates the disk-shaped recording medium of the disk cartridge; an optical pickup that records and / or reproduces information on the disk-shaped recording medium; In a disk recording and / or reproducing apparatus comprising a sled motor that moves in a radial direction of a recording medium,
The chassis includes a motor drop prevention member that prevents further movement of the spindle motor and / or sled motor when the spindle motor and / or sled motor moves in a direction of dropping from the chassis. A disc recording and / or reproducing device. The thread motor includes a first gear attached to the top surface of the rotor, and the optical pickup travels through a second gear meshing with the gear.
2. The disk recording and / or reproducing apparatus according to claim 1, wherein the motor drop-off prevention member is disposed at a position facing the motor drop-off prevention member with the rotation axis of the thread motor as a center.   2. The disk recording and / or reproducing apparatus according to claim 1, wherein the motor drop-off preventing member is cut and raised in the chassis.   2. The disk recording and / or reproducing apparatus according to claim 1, wherein the motor drop-off prevention member is outsert-molded on the chassis. 2. The disk recording and / or reproducing device according to claim 1, wherein a stator substrate of the spindle motor and / or thread motor is resin-molded integrally with the chassis by outsert molding.

Images