JP4152633B2 - Cartridge positioning mechanism for disk drive - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a disk device such as a player or a recorder that performs recording or reproduction or recording / reproduction on a disk such as an optical disk.
[0002]
In particular, the present invention relates to a cartridge positioning mechanism when loading a disk on which a disk stored in a cartridge and a tray on which a single disk is placed into a disk device.
[0003]
[Prior art]
[0004]
[Prior art]
26 to 31 show a conventional optical disk recording / reproducing apparatus. In FIG. 26, 201 is a main body composed of a mechanical chassis 201a and a case 201b of an optical disk recording / reproducing apparatus, 204 is a cartridge 1 in which an optical disk (not shown) is stored, and a tray on which a single optical disk (not shown) is placed. It is.
[0005]
At the center of the cartridge mounting surface 233 of the tray 204, two large and small concave portions provided concentrically are provided. The large-diameter concave portion is prepared by the large-diameter disk mounting portion 231, and the small-diameter concave portion is prepared by the small-diameter disk mounting portion 232 so as to be selectively used according to the outer diameter of the disc mounted on the disc recording / reproducing apparatus main body 201.
[0006]
The tray 204 is formed with a front wall surface 234, a left wall surface 235, and a right wall surface 236 that are slightly larger than the outer dimensions of the cartridge 1 and are formed perpendicular to the cartridge mounting surface 233. A cartridge preload member 237 is provided on the back side of the tray 204 via a compression coil spring 237a so as to be movable in the front-rear direction. The cartridge preload member 237a is held by the holding portion 250 in a state of being preloaded on the front side of the tray 204. It has a structure.
[0007]
On the back surface of the tray 204, a rack gear 288 that engages with a final drive gear of a loading gear system 281 driven by a loading motor 280 provided on the front side of the mechanical chassis 201a is provided, and the rotation direction of the loading motor 280 is changed. By switching, the tray 204 can be loaded and ejected.
[0008]
The tray 204 and the mechanical chassis 201a are resin molded products, and the sliding surface during loading of the tray 204 formed on the mechanical chassis 201a is molded smoothly. The sliding surface of the lower surface of the tray 204 has a rail shape having a convex cross section, and several guide members are provided in the vicinity of the sliding surface of the apparatus main body 201 to prevent meandering when the tray 204 is loaded. It has a structure.
[0009]
The mechanical chassis 201a is provided with an upper base 228 as an upper lid. The upper base 228 is provided with a clamper 210 for fixing the disk to the spindle motor, and a clamp arm 212 for holding the clamper 210 in a vertical direction with respect to the spindle motor. Further, in order to regulate the vibration of the cartridge 1 when the tray 204 is loaded, there are cartridge holding springs 229 provided on the left and right sides of the upper base 228 and a total of four cartridge holding portions 230 provided on both front and rear ends of the cartridge holding spring 229. The ribs at the left and right ends of the cartridge 1 are urged downward. The cartridge 1 is fixed to the tray 204 by the downward urging force of the cartridge pressing spring 229 via the cartridge pressing portion 230 from immediately after the start of loading to after completion of loading. The tray 204 is urged to the apparatus main body 201 through the cartridge 1 urged downward by the cartridge pressing portion 230, and the loading operation is performed without generating vibration and noise due to vertical play.
[0010]
As described above, the urging force of the cartridge pressing spring 229 urges the cartridge 1 to the tray 204 and the tray 204 to the mechanical chassis 201a from immediately after the loading starts to after the loading is completed, and between the cartridge 1, the tray 204, and the mechanical chassis 201a. 3 has a function of reducing vibration and noise generated during loading and rotation of the disk 10. The cartridge pressing portion 230 may be configured with a roller.
[0011]
The traverse base 266 holds a spindle motor 282 that holds and rotates a disk, an optical pickup 283 that reads and writes information on the disk, and a traverse motor 284 that moves the optical pickup 283 in the radial direction of the disk and a lead screw 297. Yes. A rear end 266a of the traverse base 266 is rotatably supported by a mechanical chassis 201a by a torsion spring, and a front end 266b is preloaded downward with a light load. Two slit holes 291 are provided on the left and right sides of the front end 266b of the traverse base 266, and are engaged with a cam lever 285 inserted around a rotation shaft 292 provided on the bottom surface of the mechanical chassis 201a. The traverse base 266 is driven up and down by the rotation of the cam lever 285. The cam lever 285 engages with the tray 204 near the carry-in position and rotates according to the operation of the tray 204.
[0012]
Thus, until the tray 204 is completely loaded, the spindle motor 282 held on the traverse base 266, the traverse motor 284 that drives the optical pickup 283, and the optical pickup 283 interfere with the tray 204, the cartridge 1, and the disk. To avoid this, the tray 204 is retracted below the loading path of the tray 204, and these approach the disk when loading is completed.
[0013]
Further, two alignment pins 214 are provided on the other end 266b side of the traverse base 266, and the clearance between the disk held by the spindle motor 282 and the cartridge 1 is maintained, and the cartridge 1 is positioned at a position where it does not contact the disk. To do. Further, a disk state detection switch 215 is provided in the vicinity of the alignment pin 214, and by determining the engagement state with the detection hole of the cartridge 1, it is possible to write to the disk stored in the cartridge 1, the front and back of the disk, the disk Is mounted on a printed circuit board provided on the traverse base.
[0014]
The operation of the disk recording / reproducing apparatus configured as described above will be described by taking as an example a case where a disk stored in the cartridge 1 is reproduced. When the cartridge 1 is placed on the tray 204 surrounded by the front wall surface 234, the left wall surface 235, and the right wall surface 236, the cartridge preload member 237 is pushed toward the back side with respect to the tray 204 at the rear end of the cartridge 1. The cartridge 1 is slid obliquely downward from the upper front side of the tray 204, and is finally placed on the cartridge placement surface 233 so that the front end of the cartridge 1 is in contact with the inner wall surface of the front wall surface 234. 1 is completed.
[0015]
At this time, the front end of the cartridge 1 is pressed to the inside of the front wall surface 234 by the cartridge preload member 237, and the cartridge 1 is substantially positioned with respect to the tray 204 without shaking back and forth.
[0016]
The tray 204 on which the cartridge 1 is placed is automatically loaded into the disc recording / reproducing apparatus main body 201 by the driving force of the loading motor, and the shutter of the cartridge 1 is opened by the opener. Thereafter, the cartridge 1 is finally moved with respect to the tray 204 and the spindle motor by the insertion operation of the alignment pin 214 formed integrally with the spindle motor 282 and the traverse base 266 to which the optical pickup is fixed into the positioning hole 3 of the cartridge 1. Is positioned. Almost simultaneously, the state detection switch 215 detects the state of the cartridge 1. Further, the disk is held and fixed by the clamper 210 on the turntable of the spindle motor 282 of the apparatus main body 201, and the disk is rotated into a recordable or reproducible state by the rotation of the spindle motor 282.
[0017]
FIG. 31 shows a timing chart of the cartridge loading sequence of the apparatus main body 201 of the conventional optical disc recording / reproducing apparatus.
[0018]
Reference numeral 250 denotes a cartridge placement operation for placing the cartridge 1 on the tray 204.
[0019]
In 251, after the cartridge 1 is placed on the tray 204, a cartridge front biasing operation for biasing the cartridge against the front wall surface 234 of the tray 204 is generated by the cartridge preload member 237 provided on the rear side of the tray 204.
[0020]
As the next operation, reference numeral 252 represents a tray pushing operation for pushing the tray 204 into the optical disc recording / reproducing apparatus 201, and reference numeral 253 represents a load eject switch operation for pushing the load eject switch 246, which is used as a trigger for starting the loading of the tray 204. .
[0021]
After selecting either the tray pushing operation 252 or the load eject switch operation 253, the loading operation of the tray 204 of 254 is started.
[0022]
Almost in parallel with the loading operation 254, the shutter opening operation of opening the shutter 2 of the cartridge 1 of 255 and the downward biasing operation of the cartridge 1 to the tray 204 of the cartridge 1 are performed.
[0023]
Reference numeral 257 denotes a clamp preparation operation in which a clamp arm and a clamper that engage with protrusions provided on the tray 204 are positioned with respect to the cartridge 1 just before the end of the loading operation 254 and before the end of the loading operation 254. .
[0024]
At the end of the loading operation 254, the shutter opening operation 255 of the cartridge 1 is also completed, and the preparation for clamping the disc 10 contained in the cartridge 1 to the spindle motor is completed.
[0025]
Immediately before the loading of the tray 204 is completed, the clamp arm drive protrusion provided on the tray 204 pushes up one of the clamp arms rotatably provided on the upper base by a hinge, and the clamper 210 is held. Lower one side. As a result, the clamper 210 is lowered to a position where the disk 10 can be clamped.
[0026]
When the loading of the cartridge 1 placed on the tray 204 is completed after the clamper 210 is lowered, the engagement between the tray 204 and the rack gear 217 is released, and the driving force by the driving gear 219 is disconnected from the tray 204, and only the rack gear 217 is received. Is driven backward with respect to the tray 204. The driving force to the rear of the rack gear 117 is transmitted as the rotational force of the cam lever 221, and the traverse base 208 rises along the slope of the cam lever 221.
[0027]
Reference numeral 258 denotes a cartridge positioning operation in which the alignment pin 214 is inserted into the positioning hole 3 provided in the cartridge 1 and the positioning of the cartridge 1 with respect to the tray 204 is completed.
[0028]
As the traverse base 208 is raised, the two alignment pins 214 provided integrally with the traverse base 208 are inserted into two positioning holes 3 provided on the front side of the cartridge 1.
[0029]
At the time of loading, the cartridge 1 is displaced with respect to the spindle motor 205 due to the backlash of the tray 204 with respect to the mechanical chassis 209 and the backlash of the cartridge 1 with respect to the tray 204. When the disk 10 is rotated while the cartridge 1 is displaced from the spindle motor 205, the outer peripheral portion of the disk 10 and the inner wall of the cartridge 1 come into contact with each other, and noise is generated. When the positional deviation is large, the contact becomes resistance, the disc 10 is released from the clamped state, and the disc 10 may be damaged inside the cartridge 1.
[0030]
By inserting the alignment pin 214 into the positioning hole 3 of the cartridge 1, the positional deviation of the cartridge 1 with respect to the spindle motor 205 is improved, and a sufficient clearance is secured between the cartridge 1 and the disk 10.
[0031]
Reference numeral 259 denotes a state detection operation in which the state detection switch 215 enters the state detection hole 4 of the cartridge 1 and detects the state of the disk in the cartridge 1 in parallel with the cartridge positioning operation 258.
[0032]
The state detection switch 215 is also inserted into the state detection hole 4 of the cartridge 1 before and after the insertion of the alignment pin 214 into the positioning hole 3 of the cartridge.
[0033]
Unlike the alignment pin 214, since a large clearance is secured between the state detection hole 4 and the state detection switch 215, even if the cartridge 1 is misaligned, regarding the state detection of the cartridge 1, Insertion operation is guaranteed with a margin.
[0034]
Reference numeral 260 denotes a disc clamping operation in which the spindle motor 205 penetrates into the center hole 5 of the disc 10 and clamps the disc to the spindle motor 205 with the clamper 210.
[0035]
In parallel with the insertion of the alignment pin 214 and the state detection switch 215 to the cartridge 1, the center cone 122 is inserted into the center hole 53 of the disk 10 accommodated in the cartridge 1 in the process of raising the traverse base 208. 10 floats in the space in the cartridge 1.
[0036]
As the disk 10 floats, the clamper 210 waiting at the clamping position engages with the center cone 222, and the clamping of the disk 10 is completed.
[0037]
Reference numeral 261 denotes a recording / reproducing operation in which the spindle motor 205 rotates the disk and the optical pickup 207 performs recording on or reading from the disk.
[0038]
When the clamping of the disk 10 is completed, the spindle motor 205 is rotated, and a spot of laser light is irradiated from the optical pickup 207 to the back surface of the disk 10.
[0039]
Thereafter, data recorded on the disk 10 is reproduced in accordance with a command from the host PC.
[0040]
After the predetermined recording / reproducing operation for the disc 1 is completed, the ejecting operation of the cartridge 1 and the disc 10 accommodated in the cartridge 1 is started again in accordance with an instruction from the PC or an input signal from the eject switch 144 of the disc recording / reproducing apparatus 201. The
[0041]
The ejection operation of the tray 204 of the conventional optical disc recording / reproducing apparatus is omitted because it is almost the reverse process of the loading operation.
[0042]
[Problems to be solved by the invention]
However, the disk recording / reproducing apparatus as described above has the following problems.
[0043]
(1) Since the alignment pin and the state detection switch are integrated with the traverse base that holds the spindle motor, etc., the traverse base has a large outer shape and must be driven up and down during loading or ejection. Increased vertical driving force of the traverse base and noise generated by the collision between the traverse base and the chassis during ejection were large.
[0044]
(2) Because the outer shape of the traverse base is large, there are restrictions on the arrangement of the loading motor and gear system that perform loading and ejection driving, a sufficient reduction ratio cannot be ensured, and noise generated during loading and ejection increases. It was.
[0045]
(3) Since the cartridge after loading has been structured to be held integrally with the traverse base, upper base, tray, and mechanical chassis, the damper member that absorbs disturbance vibration supports the heavy mechanical chassis. In consideration of deformation due to changes over time of the damper member, it is necessary to employ rubber with high rubber hardness, and large disturbance vibrations cannot be sufficiently absorbed.
[0046]
(4) When the cartridge is placed on the tray, the cartridge is urged and positioned inside the front wall surface of the tray by the cartridge preloading member.
[0047]
For this reason, when adjusting the position of the cartridge during loading of the cartridge, the driving force for inserting the alignment pin into the positioning hole of the cartridge needs to move the cartridge back and forth or right and left against the urging force of the cartridge preload member. There is a problem that the load on the loading motor and the loading gear system increases, resulting in increased power consumption and noise.
[0048]
(5) When loading a cartridge, the cartridge is biased toward the cartridge mounting surface of the tray by the cartridge pressing spring and the cartridge pressing roller.
[0049]
For this reason, when adjusting the position of the cartridge when loading the cartridge, the driving force for inserting the alignment pin into the positioning hole of the cartridge is such that the cartridge is moved back and forth or left and right against the urging force of the cartridge pressing spring and the cartridge pressing roller. There is a problem that it is necessary to move, the load on the loading motor and the loading gear system increases, and power consumption and noise increase.
[0050]
The cartridge positioning mechanism of the disk apparatus according to the present invention has been made in view of such problems, and in order to solve the above problems, the traverse base can be reduced in size and weight, and the driving force and noise can be reduced. Yes.
[0051]
[Means for Solving the Problems]
The present invention comprises the following means in order to solve the above problems.
[0052]
  The cartridge positioning mechanism of the disk apparatus according to claim 1, wherein a cartridge mounting member for mounting a cartridge containing a disk, a traverse base for holding a disk rotating means for mounting and rotating the disk, and the cartridge mounting member A drive means for driving in / out of the cartridge, a chassis for holding the traverse base and the drive means and holding the cartridge mounting member so as to be carried in / out, and held in the chassis so as to be engaged with or disengaged from the positioning hole of the cartridge. Positioning means that engages with the positioning hole when the cartridge mounting member is completely loadedAnd saidA cartridge urging member for pressing the cartridge engaged with the positioning hole by positioning means to the cartridge mounting memberThe traverse base and the positioning means are driven up and down by a cam member and share the same cam mechanism provided on the cam memberIs.
[0053]
  According to the cartridge positioning mechanism of the disk device according to claim 1, by providing the positioning means separately from the traverse base, it is possible to configure a traverse base having a small outer shape and a light weight. The drive torque, gear load, and noise during loading and ejection can be reduced.
  Further, after the cartridge is positioned and fixed by the positioning means, the timing of the cartridge urging member pressing the upper portion of the cartridge is reached, so that the positioning means can be reliably engaged with the positioning hole of the cartridge.
  Furthermore, since the traverse base and the positioning means share the same cam mechanism, it is possible to avoid deviations in the vertical drive sequence of the traverse base and positioning means due to variations in the profile of the cam mechanism due to initial and temporal wear. became.
[0054]
  The cartridge positioning mechanism of the disk device according to claim 2,The damper member according to claim 1, further comprising a damper member that elastically supports the traverse base, and the damper member is held by the chassis.Is.
[0055]
According to the cartridge positioning mechanism of the disk device of the second aspect, the same effect as that of the first aspect is obtained.
[0056]
According to a third aspect of the present invention, there is provided the cartridge positioning mechanism of the disk device according to the second aspect, wherein the damper member is provided on the traverse holder and the traverse holder is held by the chassis.
[0057]
According to the cartridge positioning mechanism of the disk device of the third aspect, the same effect as that of the second aspect is obtained.
[0058]
According to a fourth aspect of the present invention, there is provided the cartridge positioning mechanism of the disk device according to the second aspect, wherein the positioning means can be engaged with or disengaged from the left and right positioning holes of the cartridge in at least one place.
[0059]
According to the cartridge positioning mechanism of the disk device according to the fourth aspect, the tolerance of the cartridge positioning means can be increased.
[0060]
According to a fifth aspect of the present invention, there is provided the cartridge positioning mechanism of the disk device according to the second or third aspect, wherein the positioning means is held so as to be position-adjustable with respect to the chassis.
[0061]
According to the cartridge positioning mechanism of the disk device according to the fifth aspect, the positioning accuracy of the cartridge can be improved by adjusting the positioning means in the longitudinal direction.
[0064]
  Claim6The cartridge positioning mechanism of the disk apparatus according to claim 1, claim 2, claim 3, claim 4.Or claim 5The guide member includes a guide member for guiding the vertical drive of the positioning means, the guide member has a multi-step taper shape, and the gap between the positioning means and the guide member is minimized when the positioning means is inserted into the positioning hole of the cartridge. .
[0065]
  Claim6According to the cartridge positioning mechanism of the disk device described, the gap between the positioning means and the guide member is minimized when the cartridge is inserted, so that the driving load before insertion can be reduced and the positioning accuracy during insertion can be improved.
[0066]
  Claim7The cartridge positioning mechanism of the disk device according to claim 2, wherein the cartridge has a state detection hole indicating a state of a disk contained in the cartridge, and is held in the chassis so as to be engaged with or detached from the state detection hole. A detecting means is provided, and the positioning means and the state detecting means are moved up and down in synchronization.
[0067]
  Claim7According to the cartridge positioning mechanism of the disk device described, by providing the state detection means separately from the traverse base, it is possible to configure a traverse base having a smaller outer shape and a light weight. Driving torque, gear load, and noise during loading and ejection can be further reduced.
[0068]
  Claim8The cartridge positioning mechanism of the disk apparatus according to claim 1, claim 2, claim 3, claim 4, claim 5, claim 6.Or claim 7And 2nd driving means for driving the positioning means up and down.
[0069]
  Claim8According to the cartridge positioning mechanism of the disk device described above, by providing the second driving means for driving the positioning means up and down, for example, the cam mechanism for driving the positioning means up and down is far from the position where the cam mechanism inserts the positioning means into the positioning hole. However, the insertion force of the positioning means can be increased against the bending stress generated when the positioning means is inserted.
[0070]
  Claim9The cartridge positioning mechanism of the disk device described in claim8The second driving means stops the driving force immediately before the positioning means completes the engagement with the positioning hole of the cartridge.
[0071]
  Claim9According to the cartridge positioning mechanism of the described disk device, the claim8In addition to the same effect as the above, the creep generated in the second driving means that occurs when the loading state continues for a long time by stopping the driving force of the second driving means after the insertion of the positioning means into the positioning hole is completed. Deformation can be avoided.
[0072]
  Claim10The cartridge positioning mechanism of the disk device described isClaim 7In this embodiment, a movement restricting means for restricting the movement of the state detecting means after the state detecting means is detached from the state detecting hole of the cartridge.
[0073]
  Claim10According to the cartridge positioning mechanism of the described disk device,Claim 7In addition to the same effects as the above, since the state detection unit is restricted from rising after being detached, it is possible to avoid interference between the tray or cartridge and the state detection unit during ejection.
[0074]
  Claim11The cartridge positioning mechanism of the disk device described in claim10The second driving means and the movement restricting means are integrally configured.
[0075]
  Claim11According to the cartridge positioning mechanism of the disk device described, the number of parts can be reduced by integrally configuring the second driving unit of the positioning unit and the regulating unit of the state detecting unit.
[0076]
  Claim12The cartridge positioning mechanism of the disk device according to the present invention is the first, the second, the third, the fourth, the fifth, the sixth, the seventh, the eighth, the ninth, the tenth.Or claim 11The cartridge mounting member has a cartridge position reference in a direction in which the shutter opening / closing means opens the cartridge shutter, and the positioning means is provided in at least one place. is there.
[0077]
  Claim12According to the cartridge positioning mechanism of the disk apparatus described above, the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, eighth, and ninth aspects are described. 10Or claim 11In addition to the same effect as the above, by providing a positioning means at least on the opening side of the shutter of the cartridge, it is not necessary to adjust the position of the cartridge in the horizontal direction, and the positioning means can only adjust the position in the front and rear direction .
[0078]
DETAILED DESCRIPTION OF THE INVENTION
  Hereinafter, embodiments of the present invention will be described with reference to FIGS.22Will be described.
(Embodiment 1)
  FIG. 1 is an exploded perspective view showing an optical disk recording / reproducing apparatus according to a first embodiment of the present invention. FIG. 2 shows a sequence flow from loading (loading) a cartridge into the optical disk recording / reproducing apparatus and rotating the disk. It is shown.
[0079]
An optical disk recording / reproducing apparatus according to the present invention will be described with reference to FIG. Reference numeral 140 denotes an apparatus main body of an optical disk recording / reproducing apparatus, which is roughly composed of a loading mechanism 190, a traverse mechanism 191, a mechanical chassis 60, a tray 20, and a disk clamp mechanism 192.
[0080]
Next, FIG. 2 shows a timing chart of the cartridge loading sequence of the optical disk recording / reproducing apparatus of the present invention.
[0081]
Reference numeral 120 denotes a cartridge placing operation for placing the cartridge 1 on the tray 20. As the next operation, reference numeral 121 denotes a tray pushing operation for pushing the tray 20 into the optical disc recording / reproducing apparatus main body 140, and 122 denotes a load eject switch operation for pushing a load eject switch (not shown), thereby loading the tray 20. Trigger as a start.
[0082]
After selecting either the tray pushing operation 121 or the load eject switch operation 122, the loading operation of the tray 20 of 123 is started.
[0083]
In parallel with the loading operation 123, the shutter opening operation for opening the shutter 2 of the cartridge 1 of 124 is performed. At the end of the loading operation 123, the shutter opening operation 124 of the cartridge 1 is also completed. Preparation for clamping the disc to the spindle motor 90 is completed. That is, the clamp 84 provided on the clamp arm 73 that engages with the protrusion 130 provided on the tray 20 is positioned with respect to the cartridge 1 just before the end of the loading operation 123 and before the end of the loading operation 123. Preparatory work is completed.
[0084]
Reference numeral 126 denotes a cartridge positioning operation in which the alignment pin 102 is inserted into the positioning hole 3 provided in the cartridge 1 and the positioning of the cartridge 1 with respect to the tray 20 is completed. At this time, the cartridge positioning assist operation 131 is performed.
[0085]
127 is a state detection operation in which a state detection lever 106 engaged with a state detection switch or a state detection switch 105 provided on the circuit board 85 is inserted into the state detection hole 4 of the cartridge 1 to detect the state of the disk in the cartridge 1. Indicates.
[0086]
Thereafter, rattling of the cartridge 1 is eliminated by a cartridge fixing operation in which the side arm 143 urges the cartridge 1 and presses and fixes it to the tray 20 as 128.
[0087]
Reference numeral 129 denotes a disk clamping operation in which the spindle motor 90 penetrates into the center hole of the disk and clamps the disk 10 together with the clamper 84.
[0088]
Reference numeral 130 denotes a recording / reproducing operation in which the spindle motor 90 rotates the disk and recording or reading of the recording is performed on the disk by the action of the optical pickup 99.
[0089]
Since the cartridge ejection sequence of the optical disc recording / reproducing apparatus of the present invention occurs in the reverse order of the cartridge loading sequence, description thereof is omitted.
[0090]
Next, the mechanism part for performing each operation | work demonstrated in FIG. 2 is demonstrated.
[0091]
First, as shown in FIG. 3, in the cartridge mounting operation 120, the center hole 27a of the cartridge holder 27 serving as the cartridge holding means is fitted to the shafts 28 provided on both sides of the tray 20, and the engagement portion 27b at the tip is fitted. For example, the spring 49 using a coil spring is urged inwardly, the engaging portion 27b is engaged with the engaged portion 6 of one of the cartridges (see FIG. 6), and the cartridge 1 is moved by the pair of cartridge holders 27. Holds to grip. 21 is a cartridge mounting surface, 22 and 23 are recesses for mounting a single disk, 25 and 26 are both side walls, 29 is a shutter opener, and 30 is a slit for allowing a part of the cartridge holder 27 to enter.
[0092]
Next, a loading operation 123 based on the operations 121 and 122 of the tray 20 is due to the action of the rack and pinion in the loading mechanism 190, and the loading mechanism 190 has an opening portion for loading and unloading the tray 20 of the mechanical chassis 60. It is provided inside 60 a and has a loading motor 61 and a loading gear system 66. On the other hand, a rack 40 that engages with a drive gear (output pinion) 66a of a loading gear system 66 is provided on one side of the rear surface of the tray 20 in the loading / unloading direction, as shown in FIG. Reference numeral 41 denotes a metal shaft provided in parallel with the rack 40, and 42 denotes a holder that supports the shaft 41 and is fixed to the mechanical chassis 60. As a result, one side of the tray 20 is provided in the mechanical chassis 60 so as to be movable in the loading / unloading direction, while the other side is slidably supported by the guide step 63 of the mechanical chassis 60 and protruded from the mechanical chassis 60. The lifting prevention unit 209 prevents the other side of the tray 20 from rising. The carry-out position of the tray 20 with respect to the mechanical chassis 60 is restricted to a position where the cartridge 1 can be attached to and detached from the tray 20, and the carry-in position of the tray 20 is restricted to a position where the disk of the cartridge 1 is driven by the spindle motor 90.
[0093]
The shutter opening operation 124 opens the shutter 2 provided in the cartridge 1. The opener 29 provided on the tray 20 is movable in a direction perpendicular to the loading / unloading direction, and the opener 29 is linked to the loading operation of the tray 20. For example, a groove-shaped cam guide (not shown), and the cam guide is provided on the back surface of the upper base 83. When the tray 20 is unloaded, the opener 29 is moved to the position for opening the shutter 2 by the cam guide, and the tray 20 starts loading from the fixed state where the cartridge 1 is placed on the tray 20 and held by the cartridge holder 27. When started, the opener 29 moves along the cam guide in a direction perpendicular to the carry-in direction, and the protrusion of the opener 29 engages with the end of the protrusion at the tip of the shutter 2, and the shutter 2 is urged in the closing direction. It begins to open against the spring force of the closed spring and opens completely before loading is complete. When the shutter 2 is opened, the spindle motor 90 can be engaged with the disk in the cartridge 1 and the optical pickup 99 can be brought closer. On the other hand, as the tray 20 is carried out, the opener 29 moves in the opposite direction, and the shutter 2 moves in the closing direction by the closing spring.
[0094]
The clamp preparation work 125 is performed by a disk clamp mechanism 192 that operates as the tray 20 moves near the carry-in position. As shown in FIG. 1, the disk clamp mechanism 192 is mounted on the upper base 83, and is provided at one end of the clamp arm 73, the clamp arm 73, a clamp pressing spring 76 that supports the intermediate portion of the clamp arm 73, and the clamp arm 73. The clamper 84 is located in a through hole 83 a provided in the upper base 83. The clamper 84 is configured to fix the disk 2 to the turntable 91 with the clamper 84 when the disk 10 is mounted on the spindle motor 90. The clamper 84 is formed of a member that can be divided into two parts, upper and lower, and has a magnet built therein. Further, in order to center the disk 10 with respect to the turntable 91, a magnetic material is embedded in the top of the center cone formed at the center. The clamper 84 fixes the disk 10 to the turntable 91 by the magnetic attraction between the magnet and the magnetic body built in the clamper 84.
[0095]
The clamper 84 is urged by the clamp pressing spring 76 so as to float on the upper surface side of the upper base 83, and is locked to a stopper 83b provided in the through hole 83a. On the other hand, a through hole 83c is provided opposite to the other end of the clamp arm 73, and the other end of the clamp arm 73 is bent so as to protrude toward the back side of the upper base 83 to form a receiving portion 73a.
[0096]
FIG. 5A shows the relationship between the clamp mechanism 192 and the tray 20, and the upper base 83 is omitted, but the mechanical chassis 60 is shown in FIG. 5B. A protrusion 130 stands on the far right side of the tray 20. When the tray 20 slides in the apparatus, that is, in the direction of the arrow A, and the loading of the tray 20 approaches completion, the protrusion 130 contacts the receiving portion 73a of the clamp arm 73. The clamp arm 73 is always biased so that the receiving portion 73a is lowered by the action of the clamp pressing spring 76 around the intermediate fulcrum portion. However, by contacting the protrusion 130 on the tray 20, the receiving portion 73 a of the clamp arm 73 rises, rotates around the fulcrum in the direction of arrow B, and is freely rotatable in the hole at the front end of the clamp arm 73. Is lowered to the center of the disk in the cartridge 1 with the shutter 2 opened. However, in this state, the traverse holder 70 described later has not yet been raised, so that the disk is not chucked, and the clamper 84 is in a standby state.
[0097]
Next, the cartridge positioning operation 126 in which the alignment pin 102 is inserted into the positioning hole 3 of the cartridge 1 will be described with reference to FIGS.
[0098]
An alignment pin piece 102A having an alignment pin 102 oriented perpendicularly to the cartridge 1 is slid with a substantially Z-shaped cam groove 109 formed on a slide cam 100 having a pair of protrusions (cam followers) 108 on the side surfaces as cam members. A pair of cylindrical penetrating parts 102a having a pentagonal cross section provided in the same direction as the protruding direction of the alignment pin 102 are erected on the mechanical chassis 60. For example, a columnar protrusion whose cross section forms a cross shape It can move in the C direction by slidingly fitting it (not shown).
[0099]
Here, the slide cam 100 is provided along a partition plate 178 provided in the mechanical chassis 60 and extending in a direction perpendicular to the loading / unloading direction of the tray 20 in order to partition the loading motor 61 and the loading gear system 66 and the like from the traverse holder 70 and the like. And are slidably engaged (FIG. 1). A cam sliding portion 100a protrudes from one end of the slide cam 100, and the cam sliding portion 100a is formed in a groove-like load cam 249 provided in the vicinity of the side portion on the opposite side of the rack 40 in parallel with the rack 40 on the back surface of the tray 20. It is slidably engaged. The load cam 249 has, for example, an inclined portion 249a inclined approximately 45 degrees in order to move the slide cam 100 slightly in the vicinity of the loading position where the loading of the tray 20 is completed, and the cam sliding portion 100a is continuously connected to the inclined portion 249a. An extending portion 249b that guides in a direction orthogonal to the 20 moving directions is provided. Further, the slide cam 100 is provided with a rack 110 at a position facing the loading gear system 66, and the cam sliding portion 100a moves on the inclined portion 249a, so that the rack portion 110 is one motor than the driving gear 66a of the loading gear system 66. It meshes with the intermediate gear 65 on the 61 side. Therefore, as the motor 61 rotates after loading the tray 20, the slide cam 100 moves in a direction perpendicular to the moving direction of the tray 20, and the cam sliding portion 100a moves to the extension portion 249b. Due to the movement of the slide cam 100, the protrusion 108 rises along the cam groove 109, and the alignment pin 102 rises. When moving in the opposite direction, the opposite operation is performed.
[0100]
As shown in FIGS. 7 and 8, the loading motor 61 continues to rotate even after the pull-in of the tray 20 is completed, and the intermediate gear 65 that drives the rack 110 of the slide cam 100 in the loading gear system 66 moves the slide cam. Move 100 in the D direction. For this reason, after the tray 20 is retracted, the alignment pin 102 rises toward the positioning hole 3 of the cartridge 1 on the tray 20. Then, after passing through the through hole 20a of the tray 20, the positioning in the direction parallel to the disk in the cartridge 1 is completed by engaging with the positioning hole 3 of the cartridge 1. Details of the slide cam 100 and the alignment pin piece 102A will be described later. The loading motor 61 rotates through the pulley 62 and the intermediate gear 65 of the loading gear system 66, and then the drive gear 66 at the final stage moves the tray 20 to drive the rack 40 of the tray 20 not shown here. .
[0101]
In this way, as shown in FIG. 5B, the alignment pin 102 engages with the positioning hole 3 of the cartridge 1 after the loading is completed so that the clearance between the disk 10 held by the spindle motor 90 and the cartridge 1 is increased. It has a function of maintaining and positioning the cartridge 1 at a position where it does not come into contact with the disk 10.
[0102]
The mechanical chassis 60 is rotatably provided with an assist arm 104 that assists in raising the alignment pin 102. The assist arm 104 is driven via a cam plate 119 provided on the upper part of the alignment pin 102 when the slide cam 100 moves left and right. The assist arm 104 provides a force for assisting the ascent of the alignment pin 102 from below the alignment pin 102 during loading. When the position of the cartridge 1 is misaligned with respect to the tray 20, the misalignment of the cartridge 1 is corrected by forcibly inserting the alignment pin 102 into the positioning hole 3 of the cartridge 1. When the amount of positional deviation is large, the assist arm 104 moves the alignment pin 102 in the positioning hole 3 so that the positional deviation of the cartridge 1 is sufficiently corrected even if the insertion force is insufficient and the alignment pin 102 is deformed. Assist insertion force only when inserting. In addition, it has a function of canceling the assistance immediately before completion of the ascent. In addition to the above functions, the assist arm 104 has a function of restricting the movement of the detection lever 106 in the direction of the cartridge 1 after the detection lever 106 is detached from the cartridge state detection hole 4.
[0103]
Next, the detection of the state detection hole 4 of the cartridge 1, that is, the state detection operation 126 in FIG. 2 will be described with reference to FIGS.
[0104]
FIG. 9 is a view for explaining the movement of the pair of state detection levers 106 inserted into the state detection hole 4 of the cartridge 1, and FIGS. 10 and 11 are views for explaining the state in which the state detection lever 106 is urged by the torsion spring 111. FIGS. 12 and 13 are diagrams illustrating a state where the assist arm 104 is rotated, and FIGS. 14 and 15 are diagrams illustrating a state where the state detection lever 106 detects the presence or absence of the state detection hole 4 of the cartridge 1. FIG. In both figures, the mechanical chassis 60 is omitted for ease of explanation. In the DVD-RAM cartridge 1, the state detection lever 106a corresponds to the active side detection hole, and the state detection lever 106b corresponds to the write prohibition detection hole.
[0105]
Although not shown in FIG. 10, the alignment pin 102 is not yet inserted into the positioning hole 3 of the cartridge 1. At this time, the protrusion 112 inside the slide cam 100 is in contact with the F portion of the assist arm 104. The assist arm 104 has a structure that can rotate around a rotation shaft 113, and the rotation shaft 113 is rotatably held by a rotation shaft holding portion of a mechanical chassis 60 (not shown). In the state of FIG. 10, this posture is maintained and the rise of the state detection lever 106 is suppressed. At this time, as shown in FIG. 11, the tip end portion 114 of the assist arm 104 is rotated in the H direction to prevent the pair of state detection levers 106 from moving upward. The state detection lever 106 is pushed down in the direction of leaving.
[0106]
As shown in FIG. 12, the state detection lever 106 is always urged by the torsion spring 111 and receives a load that always rotates in the I direction about the rotation shaft 115. One end of the torsion spring 111 is in contact with the state detection lever 106, and the other end is in contact with the wall surface of the mechanical chassis 60. However, as described above, the assist arm 104 hinders the movement of the state detection lever 106 to rotate. The rotation shaft 115 of the state detection lever 106 is rotatably held by a rotation shaft holding portion of the mechanical chassis 60 (not shown).
[0107]
After the slide cam 100 is moved in the direction D in FIG. 6 and the alignment pin 102 is inserted into the positioning hole 3 of the cartridge 1 as described above, the projection 112 inside the slide cam 100 becomes an assist arm as shown in FIG. In order to contact the J portion of 104, the state detection lever 106 is pressed as shown in FIG. 10 and is rotated about the rotation shaft 113 as shown in FIG. 12 in the direction opposite to the H direction in FIG. . As a result, even if the alignment pin 102 is displaced from the hole 3 and the vicinity of the alignment pin 102 is bent, the push-up portion 114a in the vicinity of the tip end portion 114 assists in pushing up the vicinity of the alignment pin 102. The state detection lever 106 is released from the restraining force of the assist arm 104 and rotates in the I direction shown in FIG. 12 about the rotation shaft 115 toward the cartridge 1 by the action of the torsion spring 111.
[0108]
FIG. 14 shows a state in which the state detection lever 106 is inserted into the state detection hole 4 of the cartridge 1. Here, the state detection hole 4 of the state detection lever 106 corresponding to the state detection lever 106a is closed. . This state is detected by state detection switches 105a and 105b provided on the circuit board 116 and positioned corresponding to the respective state detection levers 106a and 106b as shown in FIGS. The detection switch 105 discriminates the engagement state with the detection hole 52 of the cartridge 1 via the detection lever 106, so that the state of the disk 10 stored in the cartridge 1 is writable, the front and back of the disk 10, and the recording of the disk 10 It has a function of detecting the capacity.
[0109]
In the present invention, a state detection lever 106 is interposed between the state detection switch 105 and the state detection hole 4 of the cartridge 1. However, it is also possible to use means in which the state detection switch 105 directly detects the state detection hole 4 of the cartridge 1 and, if the configuration permits, the alignment pin piece 102A and the state detection lever 106, or the alignment pin piece. 102A and the state detection switch 105 may be integrated so that the alignment pin 102 is inserted into the positioning hole 3 of the cartridge 1 and at the same time the state detection hole 4 of the cartridge 1 is detected.
[0110]
The cartridge positioning assist operation will be described. As shown in FIGS. 7 to 10, the position of the alignment pin 102 in the front-rear direction is regulated on the mechanical chassis 60, and the adjustment plate 103 as a guide member is fixed to the mechanical chassis 60 so that the position can be adjusted in the front-rear direction. It is fixed by means. This is because the gap between the guide groove 117 of the adjustment plate 103 and the guide portion 118 of the alignment pin 102 is minimized just before the alignment pin 102 engages with the positioning hole 3 of the cartridge 1, and the alignment pin 102 does not play back and forth. It has a function to hold. The guide groove 117 has, for example, a substantially C shape. Specifically, as shown in FIGS. 10B and 10C, both inclined surfaces have a multi-step taper shape, and FIG. Although the gap between the guide portion 118 and the guide groove 117 is located below the guide groove 117, FIG. 10C shows that the guide portion 118 is located above the guide groove 117 and the guide portion 118, the guide groove 117, and The guide portion 118 is positioned in the guide groove 117.
[0111]
Next, the operation for the side arm 143 to press the cartridge 1, that is, the operation 128 in FIG. 2 will be described with reference to FIGS. 16 to 21.
[0112]
FIG. 16 is a view for explaining the relationship between the traverse holder 70 and the slide cam 100, and FIG. 17 is a view showing the configuration of the traverse holder 70 and a side arm 71 that is a cartridge urging member. FIG. 18 shows a cam groove shape of the slide cam 100 that controls the operation of the alignment pin 107 and the side arm 71. 19 and 20 are diagrams showing each state of the side arm 71. FIG. FIG. 21 is a view showing a position where the side arm 71 clamps the tray 20.
[0113]
Further, on both the left and right side surfaces of the mechanical chassis 60, a side arm 71 for restricting vibration of the cartridge 1 after loading and a side arm spring 72 for biasing the side arm 71 to the cartridge are provided. The side arm 71 urges the cartridge 1 to the tray 20 and urges the tray 20 to the mechanical chassis 60, thereby eliminating play between the cartridge 1, the tray 20 and the mechanical chassis 60, and rotating the disk 10. It has a function to reduce generated vibration and noise.
[0114]
As shown in FIG. 16, a pair of substantially Z-shaped cam grooves 109 formed in the slide cam 100 and parallel to each other are positioned on the opposite side of the alignment pin piece 102A and project from one end of the traverse holder 70. The pin, that is, the cam follower 183 is slidably engaged. A pair of rotating support shafts 84 project from the other end of the traverse holder 82 on a plane parallel to the disk surface and perpendicular to the cam follower 183, and the traverse holder 70 is a bearing portion 67 of the mechanical chassis 60. The rotary support shaft 84 is engaged so as to be rotatable. Therefore, the traverse holder 70 rotates about the rotation support shaft 84 along the shape of the cam groove 109 of the slide cam 100 as the slide cam 100 slides in a direction perpendicular to the moving direction of the tray 20. It has a structure. As a result, the slide cam 100 constitutes an elevating means for elevating and lowering the traverse holder 70.
[0115]
Further, as shown in FIG. 1, the traverse base 82 is elastically supported by dampers, for example, rubber dampers 71 and fixing screws 85, which constitute damper members, at the four corners of the traverse holder 70. The elastic support by the rubber damper 71 has an effect of reducing the influence on the recording / reproducing operation of the disc 10 when an external vibration or impact is applied to the disc recording / reproducing apparatus main body 140. ing.
[0116]
The traverse base 82 holds the disk 10 and rotates the spindle motor 90, the guide shaft 97, the sub guide shaft 98, and the guide shafts 97 and 98 so as to be slidable in the longitudinal direction. An optical pickup 99 to be performed, and a traverse motor 94 for moving the optical pickup 99 along the guide shafts 97 and 98 in the radial direction of the disk by a lead screw are attached. Therefore, when the traverse holder 70 is raised by the action of the slide cam 100, the traverse base 80 approaches the disk 10 in the cartridge 1.
[0117]
As shown in FIG. 17, a pair of cutout portions 86 are provided symmetrically on both side surfaces of the traverse holder 70, and a force point 77 of the pair of side arms 143 is formed at the end portion of the cutout portion 86. It touches through. The pair of side arms 143 are disposed on both side surfaces of the mechanical chassis 60, and as shown in FIG. 1, an intermediate portion is pivotally supported on the rotational support shafts 78 provided on both side surfaces of the mechanical chassis 60. Is configured to be rotatable around the center. Further, as shown in FIG. 21, the side arm 143 is positioned symmetrically with respect to the center line of the cartridge 1 loaded in the mechanical chassis 60. A torsion spring 143a is attached to the side arm 143 and the mechanical chassis 60, and the urging direction of the torsion spring 143a is always the direction in which the action point 79 of the side arm 143 is lowered, that is, the K direction. Therefore, the action point 79 of the side arm 143 is lowered by raising the traverse holder 70.
[0118]
The operation timing of each component from the shape of the substantially Z-shaped cam groove 109 of the slide cam 100 and the engagement of the alignment pin piece 102 and the traverse holder 70 will be described with reference to FIG.
[0119]
The start point of the protrusion 108 of the alignment pin piece 102A is the L point of the cam groove 109, and the start point of the cam follower 183 of the traverse holder 70 is the M point of the cam groove 109.
[0120]
First, the protrusion 108 of the alignment pin piece 102 </ b> A moves up the cam groove 109 of the slide cam 100 in advance of the traverse holder 70. When the alignment pin piece 102A reaches the highest position and the insertion of the alignment pin 102 into the positioning hole 3 of the cartridge 1 is completed, that is, when the cam follower 109 reaches the point N, the cam follower 183 of the traverse holder 70 is at the point O. At this time, the side arm 143 has not yet urged the cartridge 1. That is, the state shown in FIG. Further, when the slide cam 100 is moved by the loading gear system 66 of the loading motor 61, the alignment pin piece 102 only moves on the flat portion of the cam groove 109, but the height direction does not change, but the traverse holder 70 continues to rise. When the point P is reached, the action point 79 of the side arm 143 comes into contact with the cartridge 1 as shown in FIG. After this point, the side arm 143 is held only at the action point 79 and the rotation support shaft 78, and the force point 77 is lifted from the notch 86 and is not in contact with the traverse holder 70. In other words, after the cartridge 1 is positioned and fixed by the alignment pin 102, the side arm 143 is the timing for fixing the upper portion of the cartridge 1. Therefore, the alignment pin 102 can surely penetrate into the positioning hole 3 of the cartridge 1.
[0121]
In addition, as shown in FIG. 21, the position where the action point 79 of the left and right side arms 143 presses the cartridge 1 is substantially the center in the depth direction of the cartridge 1 and the center of the disk 10 inside.
[0122]
Finally, when the cam follower 183 of the traverse holder 70 reaches the point N of the slide cam 100, the disk 10 is placed on the turntable 91 of the spindle motor 90 fixed to the traverse base 82, and the standby state is entered as described above. The disk 10 is clamped by the existing clamper 74, and loading is completed. Thereafter, the disk 10 is rotated by the spindle motor 90, and recording or reproduction is started.
[0123]
In this embodiment, the traverse base 82 and the traverse holder 70 are separate parts. However, the traverse holder 70 is eliminated, the traverse base 82 is directly driven by the slide cam 100, and the side arm 143 is moved by the traverse base 82. It may be configured to drive.
[0124]
The above is a series of sequences when the cartridge 1 is loaded.
[0125]
By adopting the sequence described above, the cartridge 1 is not biased when the cartridge 1 is loaded, so that the tray 20 can be moved smoothly. Since the load is reduced, it is not necessary to request a high torque from the loading motor 61, an apparatus with low power consumption can be realized, and further, the effect of extending the life of driving members such as gears can be expected.
[0126]
The operation of the optical disk recording / reproducing apparatus configured as described above will be described by taking as an example the case where the cartridge 1 is reproduced. When the cartridge 1 is placed on the tray 20 and an insertion force is applied to the cartridge 1, the insertion force is transmitted to the tray 20 through a stopper provided on the tray 20, and the tray 20 performs manual loading to the disc recording / reproducing device 140. Start against.
[0127]
While the tray 20 is being manually loaded, a signal for passing the tray 20 is detected by an eject end switch (not shown) of the tray 20, and a driving voltage is applied to the loading motor 61. The tray 20 starts an automatic loading operation by the rotation of the driven drive gear 66.
[0128]
At this time, no extra load is applied to the tray 20 and the tray 20 moves smoothly.
[0129]
Immediately before the tray 20 reaches the insertion completion position, the projection 100a of the slide cam 100 engaged with the load cam 249 provided on the lower surface of the tray 20 is driven by the driving force of the tray 20, and the load cam provided on the lower surface of the tray 20 When passing through the inclined portion 249a of 249, a lateral driving force is generated in the slide cam 100, and the slide cam 100 moves to the right.
[0130]
The rack gear 101 is engaged with the intermediate gear 65 while the slide cam 100 moves rightward, and the drive of the slide cam 100 by the intermediate gear 65 is started. At the same time, the drive gear 66 is detached from the rack 40 of the tray 20, and the drive of the tray 20 of the drive gear 66 is stopped. Thereafter, the tray 20 is driven to be loaded by the projection 112 of the slide cam 100.
[0131]
When the projection 100a of the slide cam 100 enters the extension 249b of the load cam 249, the movement of the tray 20 is completed.
[0132]
The protrusion 108 of the alignment pin 102 and the cam follower 183 of the traverse holder 82 are engaged with the cam groove 109 of the slide cam 100 and ascend along the cam groove 109 of the slide cam 100.
[0133]
As shown in the timing chart of FIG. 18, since the same cam groove 109 of the slide cam 100 is used, a predetermined time difference occurs in the vertical drive of the alignment pin 102 and the traverse base 80. This time difference depends on the positional relationship of the longitudinal groove portion provided in the mechanical chassis 60. When driving of the slide cam 100 by the intermediate gear 65 is started, the alignment pin 102 starts to rise first.
[0134]
The alignment pin 102 ascends along the guide groove 117 of the adjustment plate 103 that restricts the movement of the alignment pin 102 in the front-rear direction with respect to the main body 140 of the disc recording / reproducing apparatus. Each of the guide portion 118 of the alignment pin 102 and the guide groove 117 of the adjustment plate 103 has a multi-step taper shape, and before the insertion of the alignment pin 102 into the positioning hole 3 of the cartridge 1 in order to reduce the load during ascent. Has a predetermined gap, and the gap between the guide groove and the alignment pin 102 is minimized just before the alignment pin 102 is engaged with the positioning hole 3, thereby minimizing back and forth of the alignment pin 102. Hold.
[0135]
The alignment pin 102 is given an ascending force by the cam profile of the cam groove 109 of the slide cam 100. The cam groove 109 is provided near the center in the width direction of the disc recording / reproducing apparatus 140 in order to drive the slide cam 100 left and right. Since the positioning hole 3 and the alignment pin 102 of the cartridge 1 exist in the vicinity of the end portion of the disk recording / reproducing apparatus 140, when the alignment pin 102 is driven, the friction resistance between the alignment pin 102 and the adjustment plate 103, and the cartridge 1 Due to the insertion load into the positioning hole 3 due to misalignment, there is a possibility that bending stress occurs in the alignment pin 102 and it does not rise to the normal height.
[0136]
In order to solve such a problem in advance, in addition to the driving force of the cam groove 109 of the slide cam 100 of the alignment pin 102, the assist arm 104 assists the rising force of the alignment pin 102 as the second driving means. As a result, the insertion force of the alignment pin 102 into the positioning hole 3 is increased, and the positioning of the cartridge 1 is ensured.
[0137]
When the slide cam 100 moves in the left-right direction, the assist arm 104 rotates together with the loading operation by the assist arm pressing surface provided on the slide cam 100 that is in contact with the cam portion provided on the upper surface of the assist arm 104. The assist arm 104 comes into contact with the lower part of the alignment pin 102 and assists the force that the alignment pin 102 moves up. The assist arm 104 stops the assisting drive force immediately before the alignment pin 102 is completely lifted and is released from the alignment pin 102 so that the resin is molded with resin and is constantly loaded and does not creep.
[0138]
The detection lever 106 is rotatably attached to the mechanical chassis 60 and is always biased to the lower surface of the assist arm 104 by a torsion spring 111. As the slide cam 100 moves in the left-right direction, the detection lever 106 moves up and down around the rotation support shaft under the restriction of the assist arm 104. Therefore, the height when the detection lever 106 is raised and lowered is regulated by the assist arm 104. The detection lever 106 contacts the cartridge 1 immediately before the assist arm 104 is completely lifted. When the cartridge 1 is not present, the vicinity of the tip end portions of the detection levers 106a and 106b are brought into contact with a pair of hook-shaped stoppers provided in the mechanical chassis 60, and are positioned at a predetermined height.
[0139]
The traverse holder 82 is rotatably attached to the mechanical chassis 60, and the cam follower 183 which is the two pairs of protrusions on the front is engaged with the slide cam 100, and after the alignment pin 102 is raised, It rises along the cam groove 109. Immediately after the traverse holder 82 is lifted up, the detection switch 105 detects the loading end and completes the loading.
[0140]
Further, the side arm 71 that regulates the positional shift and vibration of the cartridge 1 after the loading of the mechanical chassis 60 is completed is rotatably engaged with the rotation support shafts 84 on the left and right of the mechanical chassis 60. The force point 77 is biased to the lower part of the traverse holder 82. The action point 79 of the side arm 71 is above the tray 20. The side arm 71 rotates in the direction in which the action point 79 descends around the rotation support shaft 84 in synchronization with the ascent of the traverse holder 82. Immediately before the traverse holder 82 is completely raised, the operating point 79 comes into contact with the cartridge 1. When the traverse holder 82 is further raised, the force point 77 is released from the traverse holder 82, and the cartridge 1 has a side arm spring 72 of the side arm 71. The cartridge 1 is urged in the direction in which the cartridge 1 is pressed against the tray 20, and the positioning of the cartridge 1 in the front, rear, left, right, and up directions is completed.
[0141]
Next, a state in which the optical disc recording / reproducing apparatus 140 having the above mechanism loads a single disc that is not in the cartridge 1 will be described.
[0142]
Since the parts except for the side arm 143 operate exactly the same as when the cartridge 1 is loaded, the description thereof is omitted.
[0143]
As described above, the action point 79 of the side arm 143 descends as the traverse holder 70 rotates in the ascending direction. However, since the action point 79 remains above the upper surface of the disk and the force point 77 is in contact with the notch portion 86 of the traverse holder, the action point 79 is not further lowered from that position. The posture is maintained with sufficient clearance between the point 79 and the disk. Therefore, even if a single disk is loaded, the action point 79 of the side arm 143 does not interfere with the disk.
[0144]
Further, notches 113 through which the action point 79 of the side arm 143 passes are formed on both sides of the upper base 83, and the relationship with the upper base 83 when the action point 79 of the side arm 143 is lowered most is the side By causing the action point 79 of the arm 143 to be lowered most downward from the lower surface of the upper base 83, there is no interference between the side arm 143 and the upper base 83. For this reason, the upper base 83 is slid and attached to the mechanical chassis 60 without removing the side arm 143, and the degree of freedom of the attachment method of the upper base 83 is increased, so that shortening of assembly time and parts replacement work time is expected. it can.
[0145]
Furthermore, according to the first embodiment, there are the following effects. That is, as the cartridge positioning means, the alignment pins 102 described in the first embodiment do not exist on both the left and right sides of the cartridge 1, but the alignment pins 102 exist only on the left side.
[0146]
When the cartridge 1 is placed on the tray 20 and the loading operation is started, loading is performed while the opener 29 is engaged with the tip of the shutter 2 of the cartridge 1 and the shutter 2 is opened on the left side.
[0147]
At this time, a biasing force is generated in the cartridge 1 by the reaction force of the spring of the shutter 2, and the cartridge 1 is biased to the left wall surface 25 of the tray 20.
[0148]
The tray 20 has a left wall surface 25 and a right wall surface 26 that serve as left and right guides for the cartridge 1. However, since the width dimension of the cartridge 1 varies widely, The tray 20 is configured by the positional relationship between the left wall surface 25 and the right wall surface 26.
[0149]
After completing the loading of the tray 20, the alignment pin 102 is raised by the movement of the slide cam 100 and engages with the positioning hole 3 on the left side of the cartridge 1. The cartridge 1 is positioned by fixing two portions of the left wall surface 25 of the tray 20 and the left alignment pin 102.
[0150]
A guide shaft 41 is provided on the lower surface of the tray 20 and is held by an engagement hole of a shaft holder 42 provided in the mechanical chassis 60. For this reason, the tray 20 can be loaded or ejected with respect to the mechanical chassis 60 without any back and forth rattling. However, the guide shaft 41 and the shaft holder 42 are configured for the positioning reference of the cartridge 1 with respect to the tray 20. Is valid. The positioning reference of the cartridge 1 on the tray 20 is set to the left side which is the side where the shutter 2 of the cartridge 1 is opened, and the right dimension is provided with a margin of width so that a gap is always generated. By setting the positioning reference of the tray 20, it is virtually unnecessary to adjust the position of the cartridge 1 in the left-right direction, and the alignment pin 102 is inserted into the positioning hole 3 of the cartridge 1 to perform the positioning operation. Is substantially only in the front-rear direction.
[0151]
Therefore, with the above configuration, it is possible to obtain the same effect as the configuration in which the alignment pin 102 is engaged with the two left and right positioning holes 3 of the cartridge 1.
[0152]
(Embodiment 2)
Next, the cartridge positioning mechanism of the optical disk device according to the second embodiment of the present invention will be described. With respect to the configuration of the disc recording / reproducing apparatus 140, the portions common to the first embodiment are omitted, and different configurations will be described with reference to FIGS. That is, the alignment pins 102 and 102 'are provided not only on one side but also on the left and right sides as in the first embodiment, and are positioned and fitted into the holes 3 formed on the left and right sides of the cartridge 1. The alignment pin piece 102A forms an alignment pin 102 'at the tip of an arm 102b extending in the opposite direction to the alignment pin 102.
[0153]
Others are the same as those in the first embodiment.
[0154]
In each of the above embodiments, the positioning means can be adjusted not only in the front-rear direction but also in the left-right direction, so that the positional accuracy can be further improved. It is also possible to provide a position adjustment mechanism that adjusts the position of the traverse base in the front-rear or left-right direction with respect to the chassis. The positioning accuracy of the cartridge can be improved by adjusting the front / rear / left / right of the traverse base.
[0155]
【The invention's effect】
  According to the cartridge positioning mechanism of the disk device according to claim 1, by providing the positioning means separately from the traverse base, it is possible to configure a traverse base having a small outer shape and a light weight. The drive torque, gear load, and noise during loading and ejection can be reduced.
  Further, after the cartridge is positioned and fixed by the positioning means, the timing of the cartridge urging member pressing the upper portion of the cartridge is reached, so that the positioning means can be reliably engaged with the positioning hole of the cartridge.
  Furthermore, since the traverse base and the positioning means share the same cam mechanism, it is possible to avoid deviations in the vertical drive sequence of the traverse base and positioning means due to variations in the profile of the cam mechanism due to initial and temporal wear. became.
[0156]
According to the cartridge positioning mechanism of the disk device of the second aspect, the same effect as that of the first aspect is obtained.
[0157]
According to the cartridge positioning mechanism of the disk device of the third aspect, the same effect as that of the second aspect is obtained.
[0158]
According to the cartridge positioning mechanism of the disk device according to the fourth aspect, the tolerance of the cartridge positioning means can be increased.
[0159]
According to the cartridge positioning mechanism of the disk device according to the fifth aspect, the positioning accuracy of the cartridge can be improved by adjusting the positioning means in the longitudinal direction.
[0161]
  Claim6According to the cartridge positioning mechanism of the disk device described, the gap between the positioning means and the guide member is minimized when the cartridge is inserted, so that the driving load before insertion can be reduced and the positioning accuracy during insertion can be improved.
[0162]
  Claim7According to the cartridge positioning mechanism of the disk device described, by providing the state detection means separately from the traverse base, it is possible to configure a traverse base having a smaller outer shape and a light weight. Driving torque, gear load, and noise during loading and ejection can be further reduced.
[0163]
  Claim8According to the cartridge positioning mechanism of the disk device described above, by providing the second driving means for driving the positioning means up and down, for example, the cam mechanism for driving the positioning means up and down is far from the position where the cam mechanism inserts the positioning means into the positioning hole. However, the insertion force of the positioning means can be increased against the bending stress generated when the positioning means is inserted.
[0164]
  Claim9According to the cartridge positioning mechanism of the described disk device, the claim8In addition to the same effect as the above, the creep generated in the second driving means that occurs when the loading state continues for a long time by stopping the driving force of the second driving means after the insertion of the positioning means into the positioning hole is completed. Deformation can be avoided.
[0165]
  Claim10According to the cartridge positioning mechanism of the described disk device,Claim 7In addition to the same effects as the above, since the state detection unit is restricted from rising after being detached, it is possible to avoid interference between the tray or cartridge and the state detection unit during ejection.
[0166]
  Claim11According to the cartridge positioning mechanism of the disk device described, the number of parts can be reduced by integrally configuring the second driving unit of the positioning unit and the regulating unit of the state detecting unit.
[0167]
  Claim12According to the cartridge positioning mechanism of the disk apparatus described above, the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, eighth, and ninth aspects are described. 10Or claim 11In addition to the same effect as the above, by providing a positioning means at least on the opening side of the shutter of the cartridge, it is not necessary to adjust the position of the cartridge in the horizontal direction, and the positioning means can only adjust the position in the front and rear direction .
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of an optical disc recording / reproducing apparatus according to a first embodiment of the present invention.
FIG. 2 is a flowchart showing a cartridge loading sequence in the first embodiment.
FIG. 3 is a perspective view showing a tray and a cartridge holder.
FIG. 4 is a perspective view of the tray as viewed from the back side.
5A is a perspective view for explaining a relationship between a tray and a clamper, and FIG. 5B is a perspective view of a tray in a loading end state.
FIG. 6 is an explanatory view showing a state in which the alignment pins are inserted into the positioning holes of the cartridge.
FIG. 7 is a perspective view showing the relationship between the slide cam plate, the alignment pin piece, the switch lever, and the loading mechanism, as viewed in the tray unloading direction.
FIG. 8 is a perspective view of FIG. 7 as viewed in the tray loading direction.
FIG. 9 is a perspective view showing the relationship between the switch lever and the state detection switch on the circuit board in FIG. 7;
FIG. 10 is a front view showing a relationship between a switch lever and an assist arm.
FIG. 11 is a perspective view thereof.
FIG. 12 is a side view showing a state of the assist arm and the torsion spring when the switch lever is lowered.
FIG. 13 is an explanatory diagram when the assist arm is raised.
FIG. 14 is a perspective view showing a state in which the switch lever is inserted into the detection hole of the cartridge and the cartridge is looked up from below.
15 is a perspective view seen from above in FIG. 14;
FIG. 16 is a perspective view of the traverse holder as viewed from below.
FIG. 17 is a perspective view illustrating a configuration of a traverse holder and a side arm.
FIG. 18 is an explanatory diagram of the cam groove shape of the slide cam plate and the position of the cam follower.
FIG. 19 is an explanatory view seen from the side showing a state before the side arm contacts the cartridge.
FIG. 20 is an explanatory view showing a state in which the side arm is in contact with the cartridge.
FIG. 21 is an explanatory diagram viewed from a plane showing a position where a side arm clamps a cartridge.
FIG. 22 is an explanatory view seen from the side showing a state in which the side arm clamps the tray.
FIG. 23 is a perspective view of the tray loading completion state of the second embodiment.
FIG. 24 is a perspective view showing the relationship between the slide cam plate, the alignment pin piece, the switch lever, and the loading mechanism, as viewed in the tray unloading direction.
FIG. 25 is a perspective view of FIG. 24 as viewed in the tray loading direction.
FIG. 26 is a perspective view showing an optical disc recording / reproducing apparatus in a conventional example.
FIG. 27 is an exploded perspective view thereof.
FIG. 28 is a plan view of FIG.
FIG. 29 is a cross-sectional view thereof.
FIG. 30 is a partially enlarged view thereof.
FIG. 31 is a flowchart showing a sequence in a conventional example.
[Explanation of symbols]
1 cartridge
3 Positioning hole
10 discs
20 trays
29 Opener
60 chassis
61 Loading motor
70 Traverse holder
71 Damper
82 Tosverse Base
84 Clamper
90 spindle motor
100 slide cam
103 Adjustment plate
104 Assist arm
105 State detection switch
117 Guide part
120 Alignment pin
140 Main Body of Optical Disc Recording / Reproducing Device
143 Side arm

Claims (12)

A cartridge mounting member for mounting a cartridge containing a disk, a traverse base for holding a disk rotating means for mounting and rotating the disk, a driving means for driving the cartridge mounting member in and out, and the traverse base; A chassis that holds the drive means and holds the cartridge mounting member so as to be able to be loaded and unloaded, and a chassis that is held by the chassis so as to be engageable or disengageable with a positioning hole of the cartridge and the cartridge mounting member is completely loaded. and positioning means for positioning hole engaging said a cartridge urging member for pressing said cartridge engaged in the positioning hole by the positioning means to the cartridge mounting member, said traverse base and said positioning means cam member The cam is driven up and down by the cam Cartridge positioning mechanism of the disk device share the same cam mechanism provided in the timber. 2. The cartridge positioning mechanism for a disk device according to claim 1, further comprising a damper member that elastically supports the traverse base, wherein the damper member is held by the chassis. 3. The cartridge positioning mechanism for a disk device according to claim 2, wherein the damper member is provided on a traverse holder, and the traverse holder is held by the chassis. 3. A cartridge positioning mechanism for a disk apparatus according to claim 2, wherein the positioning means is engageable or disengageable at least at one position with respect to the left and right positioning holes of the cartridge. 4. The cartridge positioning mechanism for a disk device according to claim 2, wherein the positioning means is held so as to be adjustable in position back and forth with respect to the chassis. A guide member for guiding the vertical drive of the positioning means is provided, the guide member has a multi-step taper shape, and the gap between the positioning means and the guide member is minimized when the positioning means is inserted into the positioning hole of the cartridge. 6. A cartridge positioning mechanism for a disk device according to claim 1, claim 2, claim 3, claim 4 or claim 5 . The cartridge has a state detection hole that represents a state of a disk contained in the cartridge, and includes a state detection unit that is held in the chassis so as to be engageable or disengageable from the state detection hole, and the positioning unit and the state detection unit 3. A cartridge positioning mechanism for a disk device according to claim 2, wherein the cartridge moves up and down synchronously. Claim 1, further comprising a second driving means for vertically driving the positioning means, according to claim 2, claim 3, claim 4, claim 5, claim 6 or claim cartridge positioning mechanism of the disk apparatus of claim 7, wherein. 9. The cartridge positioning mechanism for a disk apparatus according to claim 8, wherein the second driving means stops the driving force immediately before the positioning means completes the engagement with the positioning hole of the cartridge. 8. A cartridge positioning mechanism for a disk device according to claim 7 , further comprising movement restricting means for restricting movement of the state detecting means after the state detecting means is detached from the cartridge state detecting hole. 11. A cartridge positioning mechanism for a disk device according to claim 10, wherein the second driving means and the movement restricting means are integrally formed. Shutter opening / closing means for opening the shutter of the cartridge at the time of loading is provided, and the cartridge mounting member has a position reference of the cartridge in a direction in which the shutter opening / closing means opens the shutter of the cartridge, and the positioning means is provided in at least one place. Claim 1, Claim 2, Claim 3, Claim 4, Claim 5, Claim 6, Claim 7, Claim 8, Claim 9, Claim 10, or Claim 11, or Disk Positioning Cartridge Positioning mechanism.

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