JP4462109B2 - Disk drive device - Google Patents

Description

  The present invention is a slot-in disc applicable to both non-recording discs (reproduction only) such as CDs and DVDs and recording discs (both recording and reproduction) such as CD-Rs and DVD-Rs. The present invention relates to a drive device.

2. Description of the Related Art Conventionally, there has been known an optical disc drive apparatus capable of loading and ejecting a bare optical disc by a slot-in method.
As a first example of this type of conventional optical disk drive apparatus, the upper and lower surfaces of an optical disk inserted horizontally from a disk loading / unloading slot are sandwiched from above and below between a lower drive roller and an upper driven roller or upper guide. Then, the optical disk is pulled horizontally to the upper position of the turntable in the optical disk drive device by the rotation of the lower drive roller.
After this, there is one that lowers the lower drive roller or raises the turntable to clamp (chuck) the optical disk on the turntable.

In addition, as a second example of the conventional optical disc drive apparatus of this type, two diagonally front and rear directions with respect to the loading direction of the outer periphery of the disc inserted horizontally from the disc loading / unloading slot are sandwiched by a pair of front and rear rollers. While guiding the left and right sides of the optical disk with a pair of left and right disk guides, the pair of front and rear rollers pulls the optical disk horizontally to the upper position of the turntable in the optical disk drive device.
After this, the turntable is raised and the optical disk is clamped (chucked) on the turntable. Then, the pair of front and rear rollers are separated obliquely in the longitudinal direction of the optical disk, and finally the turntable is lowered to the original position. In some cases, the optical disc is recorded and reproduced.

As a third example of the conventional optical disc drive apparatus of this type, a pair of left and right rotations are performed at two positions on both the left and right sides substantially orthogonal to the loading direction of the outer periphery of the optical disc inserted horizontally from the disc loading / unloading slot. The optical disk is pulled horizontally from the disk loading / unloading slot to the turntable by sandwiching it with a roller and one of the rotating rollers is driven forward by a drive motor. Push the rotating roller in the loading direction.
Then, after the optical disk is drawn onto the turntable, the pair of left and right rotating rollers and non-rotating rollers are separated from the outer periphery of the optical disk, so that the optical disk is horizontally lowered onto the turntable and clamped (chucked). Is.
When the optical disk is ejected, the pair of left and right rotating rollers and the non-rotating roller are pressed against the outer periphery of the optical disk so that the optical disk is raised (detached) horizontally from the turntable, and then the optical disk is rotated by the non-rotating roller. , And one of the rotating rollers is reversely driven by a drive motor so that the optical disk is horizontally pushed out of the disk loading / unloading slot.
Japanese Patent Publication No. 4-4671 Japanese Patent Laid-Open No. 7-220353 JP-A-11-213696 JP 2002-117604 A

However, in the method of loading and ejecting the recording surface which is the lower surface of the optical disk by driving the lower drive roller as in the first conventional example, the recording surface of information such as a video signal which is the lower surface of the optical disk is used. Are easily contaminated or damaged, and troubles in recording and reproducing information.
Further, when the turntable is lifted and lowered, the heavy spindle motor integrated with the turntable must also be lifted and lowered, which increases the thickness of the optical disk drive device and makes it difficult to reduce the thickness of the optical disk drive device.

  Further, as in the second conventional example, two pairs of front and rear rollers sandwich an optical disk at two positions in the diagonally front and rear direction, and the left and right sides of the optical disk are guided by a pair of left and right disk guides. After the optical disk is pulled horizontally onto the turntable, the turntable is raised to clamp (chuck) the optical disk on the turntable. Then, after the pair of front and rear rollers are separated obliquely in the longitudinal direction of the optical disk and then the turntable is lowered to the original position to perform recording and reproduction of the optical disk, it is difficult to thin the optical disk drive device. In addition, the structure and operation are significantly more complex and costly. Furthermore, there has been a problem that the loading time of the optical disk becomes very long.

Further, as in the third conventional example, after the optical disk is drawn horizontally to the turntable, the pair of left and right rotating rollers and the non-rotating roller are separated from or pressed against the outer periphery of the optical disk. In addition to the function of controlling the movement of the pair of left and right rotating rollers in the radial direction with respect to the outer periphery of the optical disk, the pusher is separated and pressed with respect to the outer periphery of the optical disk together with the push roller. Functions must be provided independently.
For this reason, in the past, a plurality of motors (for example, two motors) and a large number of switching switches (for example, eight switches) are currently used, and the structure is complicated and expensive. There was a problem to say.

  The disk drive device of the present invention is made to solve the above-mentioned problem, and after loading the disk from the disk loading / unloading slot to the turntable, the disk loading means and the disk pushing means are connected to the outer periphery of the disk. The control means of the disk loading means and the disk pushing means in the disk drive device that controls the lifting and lowering of the disk with respect to the turntable by controlling the separation and pressing of the disk, the loading means is the loading and ejection of the disk A slider that slides in a direction substantially perpendicular to the direction, a pinion attached to a lower portion on one end of the slider, a single drive motor that is mounted on the slider and drives the disk loading means and the pinion both in forward and reverse directions, Slider A main slide cam disposed on the side and slid in a direction substantially perpendicular to the slide direction of the slider, and mounted on the upper portion of the main slide cam and a predetermined angle with respect to the slide direction of the main slide cam A sub-sliding cam that is slid in a direction inclined to the slider, a first urging unit that urges the main slide cam to slide away from the slider, and urges the sub-slide cam to an initial position with respect to the main slide cam. A rack formed on the sub-slide cam along the sliding direction of the second urging means and the sub-slide cam, and a rack on which the pinion can be engaged and disengaged, and the sliding direction of the main slide cam In the inclined state, the cam groove formed in the main slide cam and the support means for the disk pushing means are provided. Then, the rack of the sub slide cam is controlled to move from the non-engagement position with respect to the pinion of the slider to the engagement position against the second urging means, and the first urging is performed in the cam groove of the main slide cam. The main feature is that it is provided with a cam follower pin that is inserted and removed against the means.

  Therefore, according to this disk drive device, the structure can be simplified.

  1 to 31 are for explaining the best mode of an optical disk drive device 1 which is an example of the disk drive device of the present invention. This optical disk drive device 1 is particularly suitable for CD-R, DVD-R, etc. An optical disc that is a recording-type bare disc, which is selectively loaded in a slot-in manner into two types of discs: a small-diameter optical disc 2 having a diameter of 8 cm or the like and a large-diameter optical disc 3 having a diameter of 12 cm or the like. A loading mechanism 4 capable of ejecting is provided.

At this time, the loading mechanism 4 should have a simple structure of two switches and one motor. When the small-diameter optical disk 2 and the large-diameter optical disk 3 are selectively ejected, these central holes 2a and 3a are exposed to the outside from the front panel 1a of the optical disk drive device 1 and these central holes are exposed. 2a and 3a have a mechanism for discharging to a position where they overlap each other.
Further, the optical disc drive apparatus 1 is provided with a disc clamp mechanism 5 that enables the optical disc drive apparatus 1 to be thinned.

Details of the optical disc drive apparatus 1 will be described below.
First, as shown in the partially cut plan view and bottom view of FIGS. 1 and 2 and the partially cut side view of FIG. 4, the outer casing 7 of the optical disc drive apparatus 1 is made of synthetic resin or metal. For example, the outer casing 7 is formed in a rectangular shape on the side surface.

  The height (thickness) of the optical disc drive apparatus 1 is configured to be thin with T = 36.9 mm. Incidentally, the optical disk drive apparatus 1 has a maximum width of W = 178.6 mm and a maximum depth of D = 181.0 mm.

  Next, as shown in FIGS. 1 and 4 and the like, a disk loading / unloading slot 11 is opened horizontally in the front panel 7a of the outer casing 7. The disk loading / unloading slot 11 has a length corresponding to the diameter of the large-diameter optical disk 3, and a pair of skirt portions 12 are attached to the upper and lower sides of the disk loading / unloading slot 11. The skirt portion 12 is made of a material having an appropriate frictional force and an appropriate elasticity, and the small-diameter optical disk 2 or a large-sized optical disk 2 that is inserted into and removed from the disk loading / unloading slot 11 in the horizontal direction from the directions of arrows a and b. The upper and lower sides of the optical disk 3 having a diameter can be elastically held.

  Next, as shown in FIG. 1, FIG. 2, FIG. 4, FIG. 11, FIG. 16, and the like, the spindle motor 13 is in the vertical position in the upper position in the center of the disk loading / unloading slot 11 in the outer casing 7. The spindle motor 13 is vertically mounted on the upper portion of the central portion on the front end side of the optical pickup unit base 15, and the optical pickup unit base 15 is placed at the lowest position of the chassis 8. It is mounted horizontally via an insulator 9. A turntable 14 is fixed horizontally on the outer periphery of the upward spindle 13 a of the spindle motor 13, and a truncated cone-shaped centering boss 14 a is integrally formed at the center of the turntable 14. ing.

  Pickup means for recording and reproducing video and other information on the recording surfaces of the lower surfaces of the small-diameter and large-diameter optical disks 2 and 3 on the upper side of the optical pickup unit base 15 and on the rear side of the spindle motor 13. An optical pickup unit 16 having an objective lens 16a is mounted. The objective lens 16a is incorporated vertically upward at the center of the thread 17 disposed horizontally in an opening 15a formed on the rear side of the spindle motor 13 of the optical pickup unit base 15. Then, the thread 17 is guided by a guide main shaft 18 and a guide sub shaft 19 mounted horizontally in parallel to both sides of the opening 15 a at the upper part of the optical pickup unit base 15, and the rotation of the thread 17 is controlled by a thread motor 20. The lead screw 21 is configured to seek-feed in the directions of arrows a and b that are radial directions of the small-diameter and large-diameter optical disks 2 and 3.

Next, as shown in FIGS. 1, 4 to 6, etc., the shutter 23 is disposed at a position in the outer casing 7 that is close to the front panel 7 a side. The shutter 23 is rotatably attached to a high position of the chassis 8 by a pair of left and right fulcrums 24, and is configured to be opened and closed in the directions of arrows c and d which are up and down directions by a slide cam mechanism which will be described later.
As shown in FIGS. 1, 5, 6, etc., a disk clamp mechanism 4 described later is disposed behind the shutter 23 in the outer casing 7.

Next, the loading mechanism 4 will be described with reference to FIGS.
First, as shown in FIG. 1, FIG. 4, FIG. 7, etc., the loading mechanism 4 includes a sub rotating roller 31 and a main rotating roller 32, which are rotating means of a pair of front and rear disk loading means, and a pair of front and rear disks. A sub non-rotating roller 33 and a main non-rotating roller 34 which are non-rotating means of loading means, and non-rotating rollers 35 and 36 for extrusion which are non-rotating rollers of a pair of left and right disc pushing means are used. The sub-rotating roller 31 and the sub-non-rotating roller 33 are configured as small rollers having substantially the same diameter, and the main rotating roller 32 and the main non-rotating roller 34 are configured as large-diameter rollers having approximately the same diameter. The rotating rollers 35 and 36 are configured to have the smallest diameter.

  The sub-rotating roller 31 and the sub-non-rotating roller 33 are symmetrically positioned with respect to the loading center P1 of the small-diameter and large-diameter optical disks 2 and 3 at the front side position closest to the disk loading / unloading slot 11 in the outer casing 7. Has been placed. In addition, the main rotating roller 32 and the main non-rotating roller 34 are disposed at the intermediate positions between the sub-rotating roller 31 and the sub-non-rotating roller 33 and the turntable 14 at symmetrical positions with respect to the loading center P1. It should be noted that the horizontal spacing between the main rotating roller 32 and the main non-rotating roller 34 is slightly larger (several mm) than the horizontal spacing between the sub rotating roller 31 and the sub non-rotating roller 33.

  Further, the pair of left and right push non-rotating rollers 35 and 36 are disposed slightly symmetrically with respect to the loading center P <b> 1 at a position slightly displaced rearward from the turntable 14. And the space | interval of the left-right direction of this pair of right-and-left extrusion non-rotating rollers 35 and 36 is comprised smallest.

  On the other hand, as shown in FIG. 1, FIG. 3, FIG. 7, FIG. 16, etc., a main slider 37, which is a pair of left and right sliders at the upper portion of the outer casing 7 near the disk loading / unloading slot 11 of the chassis 8. The sub-slider 38 is arranged horizontally. The main slider 37 and the sub-slider 38 are engaged with a pair of left and right guide grooves 39 and 40 formed in the chassis 8 by a pair of guide pins 41 and 42, respectively. Therefore, the main slider 37 and the sub-slider 38 are guided by the pair of guide grooves 39 and 40 so as to be slid in the horizontal direction of the arrows e and f and the arrows g and h. .

  A pair of racks 43 and 44 formed in parallel with the arrow e and f directions and the arrows g and h directions at the opposed portions of the main slider 37 and the sub-slider 38 from the front-rear direction are perpendicular to the chassis 8. A single pinion 45 that is rotatably mounted via a support shaft 45a is engaged with both front and rear sides, and the pair of racks 43, 44 and the pinion 45 move the main slider 37 and the sub slider 38 in the directions of arrows e and f. The interlocking mechanism 46 is configured to move in the opposite directions of the arrows g and h. The main slider 37 and the sub-slider 38 are a return spring (coil spring) composed of a single tension coil spring that is a moving urging means spanned between a pair of spring locking portions 47 and 48 formed on these. In FIG. 7, which are opposite to each other, 49 is urged to move in the directions of arrows e and g.

  Accordingly, the main slider 37 and the sub-slider 38 are moved in the directions of arrows e and f and in the directions of arrows f and h by the synchronization function by the interlocking mechanism 46 including the pair of racks 43 and 44 and the pinion 45 and the return function by the return spring 49. Are slid symmetrically and with the same left and right stroke.

  Further, as shown in FIGS. 7 to 10 and the like, the sub-rotating roller 31 and the main rotating roller 32 are vertically supported on the upper and lower two portions at the end of the main slider 37 on the arrow f direction side, respectively. The sub non-rotating roller 33 and the main non-rotating roller 34 are vertically supported at two upper and lower portions at the end of the sub slider 38 in the direction of the arrow h, respectively. It is rotatable through shafts 33a and 34a and is mounted horizontally. A total of six rollers including the sub-rotating roller 31, the main rotating roller 32, the sub non-rotating roller 33, the main non-rotating roller 34, and the pair of extrusion non-rotating rollers 35 and 36 are arranged at the same height position. .

  One drive motor 51 is mounted horizontally on the main slider 37, and is rotatably attached to the worm 52 fixed to the motor shaft 51a and a vertical support shaft 53a on the main slider 37. The worm gear device using the worm wheel 53 transmits the rotational force from the drive motor 51 to the sub-rotating roller 31, the main rotating roller 32 and the pinion 72, while the sub-rotating roller 31, the main rotating roller 32 and the pinion 72 are free. A free rotation prevention mechanism 54 for preventing rotation is configured.

Small gears 32b and 31b are integrally formed under the main rotating roller 32 and the sub rotating roller 31, respectively.
On the other hand, as will be described in detail with reference to FIGS. 16 to 24, the optical disc drive apparatus 1 mechanically discriminates whether the inserted optical disc is a small-diameter optical disc 2 or a large-diameter optical disc 3. A mechanical control control mechanism 71 is incorporated for control. The control mechanism 71 includes a first control mechanism 71A and a second control mechanism 71B, which will be described later.

  2, 4, 7, and 8, the pinion 72 used in the mechanical control mechanism 71 is below the end of the main slider 37 on the arrow f direction side. At the position, the main rotating roller 32 is rotatably attached to a position substantially in the same phase on the arrow a direction side in FIG. 2 via a vertical support shaft 72a.

  As shown in FIGS. 7 and 8, the worm wheel 53 and the main rotating roller 32 are sub-rotated by a plurality of idlers 56 that are vertically attached to the upper and lower portions of the main slider 37 via support shafts 56a. The roller 31 and the pinion 72 are interlocked with each other. Accordingly, the worm wheel 53 is configured to drive the main rotating roller 32, the sub rotating roller 31, and the pinion 72 simultaneously in the forward and reverse rotation by the forward and reverse rotation driving of the worm 52 by the drive motor 51.

  At this time, as will be described later, the main rotating roller 32 and the sub rotating roller 31 are driven to rotate forward and backward in the same direction, and the pinion 72 is driven to rotate forward and backward in the opposite direction to the main rotating roller 32. .

  Next, as shown in FIG. 8, the main rotating roller 32 and the sub rotating roller 31 have upper conical roller portions 32 </ b> A and 31 </ b> A that become smaller in diameter toward the lower side, and lower conical roller portions that become larger in diameter toward the lower side. 32B, 31B and circular recesses 32C, 31C arranged in the middle of these are formed into a substantially drum-shaped roller. The upper conical roller portions 32A and 31A and the lower conical roller portions 32B and 31B are formed of synthetic resin or the like, and the circular concave portions 32C and 31C of the intermediate portion are elastic members 32D and 31D such as rubber or soft synthetic resin. It is configured. The lower conical roller portion 32B of the main rotating roller 32 extends downward from the lower conical roller portion 31B of the sub rotating roller 31 so that the maximum diameter of the main rotating roller 32 is larger than the maximum diameter of the sub rotating roller 31. It is configured.

  Further, as shown in FIG. 9, the main non-rotating roller 34 and the sub non-rotating roller 33 each have upper conical roller portions 34A and 33A having a smaller diameter as it goes downward, and a lower conical roller that becomes a larger diameter as it goes downward. The portions 34B and 33B and the non-circular concave portions 34C and 33C arranged in the intermediate portion thereof are formed into a substantially drum-shaped roller. The upper conical roller portions 34A and 33A and the lower conical roller portions 34B and 33B are formed of synthetic resin or the like, and the non-circular concave portions 34C and 33C at the intermediate portion are formed in a substantially umby shape by an elastic member such as rubber. ing.

  The main non-rotating roller 34 and the sub non-rotating roller 33 are fixed to the fixing bosses 58 on the sub-slider 38 by fixing arm portions 34E and 33E extending downward from the lower ends of the lower conical roller portions 34B and 33B. 59 is configured as a non-rotating roller.

  Therefore, the upper and lower conical roller portions 34A, 34B and 33A, 33B of the main non-rotating roller 34 and the sub non-rotating roller 33 that are configured as these non-rotating rollers do not need to be configured in a complete conical shape. At the time of loading and ejecting the optical discs 2 and 3 to be described later, for example, the lower conical roller portions 34B and 33B are formed in a non-conical shape on the side opposite to the side where the main non-rotating roller 34 and the sub non-rotating roller 33 contact. It is cut.

  Further, since the lower conical roller portion 34B of the main non-rotating roller 34 extends downward from the lower conical roller portion 33B of the sub non-rotating roller 33, the maximum diameter of the main non-rotating roller 34 is increased. It is configured to be larger than the maximum diameter (radius).

  Next, as shown in FIG. 1, FIG. 10, FIG. 16, etc., the pair of left and right extruding non-rotating rollers 35 and 36 are a pair of left and right extruding arms which are supporting means, respectively. The arms 62 are attached to the tips 61a and 62a of the arm 62 so as to be fixed or rotatable by support shafts 35a and 36a. The main push arm 61 and the sub push arm 62 are symmetrically arranged at a high position on the rear side of the chassis 8 in the outer casing 7 through a pair of left and right supporting points 63 and 64 as shown in FIG. , And can be swung (rotated) freely in the j direction. The main extrusion arm 61 and the sub-extrusion arm 62 are mutually connected by an interlocking (synchronous) structure including an arc-shaped hole formed in an intermediate portion thereof and a pin 66 moved in the arc-shaped hole 65. It is configured to be interlocked (synchronized) and oscillated symmetrically in the directions of arrows i and j.

  The pair of non-rotating rollers 35 and 36 for extrusion has an upper conical roller portion 35A whose diameter gradually decreases as it goes downward, and lower conical roller portions 35B and 36B whose diameter (radius) gradually increase as it goes downward. The circular recesses 35C and 36C formed horizontally in these intermediate portions form a substantially drum shape.

However, the lower conical roller portions 35B and 36B are integrally formed with the distal ends 61a and 62a of the main extrusion arm 61 and the sub-extrusion arm 62 formed of synthetic resin.
Also, the sub-extrusion arm 62 is rotated in the direction of the arrow j in the horizontal plane around the fulcrum 64 by a return spring (coil spring) 67 which is a moving urging means spanned between the sub-extrusion arm 62 and the chassis 8. By being urged, the main push arm 62 is also configured to be urged to rotate in the direction of the arrow j through an interlocking structure composed of an arc-shaped hole 65 and a pin 66.

  The main rotating roller 32, the sub rotating roller 31, the main non-rotating roller 34, the sub non-rotating roller 33, the circular non-rotating rollers 35 and 36 of the extrusion non-rotating rollers 35 and 36, and the non-circular concave portions configured as described above. 34C, 33C and the circular recess 35C are set at the same height as the disk loading / unloading slot 11 formed horizontally on the front panel 7a of the outer casing 7.

Next, the control mechanism 71 will be described with reference to FIGS. 2 and 16 to 31.
2, 4, 14 to 18, and the like, the control mechanism 71 is displaced to the right side (left side in FIG. 1) in FIG. 2 in the outer casing 7 (FIG. 2). And the rear end of the main slider 37 (the end on the arrow f direction side which is the sliding direction of the main slider 37) shown in FIG. Built horizontally at the top of the lower position.

  In particular, as shown in FIGS. 17 to 24, the control mechanism 71 uses a main slide cam 76 which is a large slide plate and a sub slide cam 77 which is a small slide plate. A main slide cam 76 is horizontally mounted on the upper portion of the chassis 8 and guided by a plurality of guide pins 79 and guide grooves 80, and is perpendicular to the arrow e and f directions which are the slide directions of the main slider 37 described above. It is slidably mounted in the direction of arrows k and m. The main slide cam 76 is slid and urged to a later-described original position in the direction of the arrow k by a return spring (coil spring) 81 which is a first urging means spanned between the chassis 8.

  Further, the sub slide cam 77 is horizontally mounted on the upper side of the main slide cam 76 in the direction of the arrow m (the side close to the main slider 37 described above), and the sub slide cam 77 has a plurality of parts on the main slide cam 76. Guided by the guide pin 82 and the guide groove 83, it is slidably attached in the directions of arrows n and o. However, as shown in FIG. 17, the sub slide cam 77 is slid in the directions of arrows n and o inclined at a predetermined angle θ1 with respect to the directions of arrows k and m, which are the sliding directions of the main slide cam 76. It is configured. The sub slide cam 77 is moved in the direction of arrow n to a later-described original position on the main slide cam 76 by a return spring (coil spring) 84 which is a second urging means spanned between the main slide cam 76. The slide is energized.

  Next, the position shifted to the main slider 37 side between the main slide cam 76 and the sub slide cam 77 corresponds to the small-diameter (8 cm) optical disc 2 and the large-diameter (12 cm) optical disc 3. A first control mechanism (cam structure) 71A for controlling the slide stroke of the main slider 37 in the direction of the arrow f is provided.

  The first control mechanism 71A includes first and second cam grooves 92 and 93 formed in parallel to the main slide cam 76 and between the end portions on the arrow m direction side of the first and second cam grooves 92 and 93. A connecting groove 94 to be connected and first and second racks 85 and 86 formed in parallel to the sub-slider 77 are provided.

The first and second cam grooves 92 and 93 and the first and second racks 96 are formed at intervals in the directions of arrows f and e, which are the sliding directions of the main slider 37, respectively. The second cam grooves 92 and 93 both have the inclination of the aforementioned angle θ1, which is the sliding direction of the main slide cam 76. The connecting groove 94 is formed in parallel with the directions of arrows e and f, which are the sliding directions of the main slider 37, and the end of the connecting groove 94 on the arrow e direction side has the first control mechanism 71A. An open portion 94a for inserting the lower end of the support shaft 72a of the pinion 72 into the connecting groove 94 from the direction of the arrow f at the time of assembly is formed.
Similarly, the first and second racks 95 and 96 have the inclination of the angle θ1 described above with respect to the directions of the arrows k and m.

Then, the lower end of the support shaft 72a protruding below the pinion 72 disposed at the lower part of the main slider 37 on the arrow f direction side is freely integrated with the main slider 37 in the connecting groove 94 in the directions of arrows e and f. It is configured to be able to move to. Further, the lower end of the support shaft 72a is configured to be able to selectively enter and exit from the connecting groove 94 into the first and second cam grooves 92 and 93 in the directions of arrows n and o.
The first and second racks 95 and 96 are configured to be selectively engageable and disengageable with respect to the pinion 72 in the directions of arrows o and n.

  Next, the small-diameter (8 cm) optical disk 2 and the large-diameter (12 cm) optical disk are located between the main slide cam 76 and the sub-slide cam 77 at a position displaced to the side opposite to the main slider 37 side. 3, a second control mechanism (cam structure) 71 </ b> B for controlling the swing (rotation) stroke of the main push arm 61 and the sub push arm 62 in the direction of arrow i is provided.

  The second control mechanism 71B includes first and second cam grooves 102 and 103 formed in parallel to the main slide cam 76, and ends between the first and second cam grooves 102 and 103 on the arrow m direction side. And a cam that is vertically provided below the other end 61b of the main pushing arm 61 and is slid between the first and second cam grooves 102 and 103 and the arc-shaped groove 104. And a driven pin 105.

  At this time, the first and second cam grooves 102 and 103 are formed in parallel with an interval in the directions of arrows e and f, which are the sliding directions of the main slider 37, and the arrows are the sliding directions of the main slide cam 76. The first and second cam grooves 92 and 93 are inclined to the opposite side to the inclination direction of the first and second cam grooves 92 and 93 with a very small angle θ2 with respect to the k and m directions.

  Further, the radius of curvature of the arcuate groove 104 coincides with the rotation radius of the cam follower pin 105 that is swung (rotated) around the fulcrum 63 of the main push-out arm 61. One end 104 a of the arc-shaped groove 104 protrudes from the second cam groove 103 toward the arrow j direction.

  An end 77a on the arrow n direction side of the sub slide cam 77 is formed at right angles to the arrow k and m directions, which are the slide directions of the main slide cam 76, and is one side of the end 77a. On the main push arm 61 side, an arcuate notch 106 is formed which is notched in an arcuate shape parallel to the outer peripheral edge of the arcuate groove 104.

  In addition, at the position slightly displaced toward the arrow f direction on the upper part of the main slide cam 76, the shutter opening / closing control for controlling the opening / closing of the shutter 23 is performed at two positions on the arrow m direction side and the arrow k direction side. A control cam 111 and a clamp arm rotation control cam 113 for controlling the rotation of the clamp arm 132 of the disk clamp mechanism 131 are formed in parallel with the directions of the arrows k and m.

Next, as shown in FIGS. 2 and 3, the mechanical control mechanism 71 uses two control switches, a first switch 121 and a second switch 122.
The first switch 121 includes a swing type (oscillating) actuator 121a, and the second switch 122 includes a push type (push-in) actuator 122a. The first switch 121 and the second switch 122 are Both are attached to the lower surface of the main slider 37 described above at a position close to the front panel 7 a side of the outer casing 7.

  At this time, the swing type actuator 121a of the first switch 121 is directed to the front panel 7a side (arrow b direction side) of the outer casing 7, and is parallel to the arrow e and f directions along the inside of the front panel 7a. In the flat trapezoidal switch actuation cam 123, which is a switch actuation part formed in the vertical direction between the low part 123a, the high part 123b, and the low part 123c, in the direction of arrows p and q It is configured to reciprocate in the directions of arrows e1 and f1 while swinging.

  Further, the push type actuator 122a of the second switch 122 is arranged in a state of being inserted from the arrow k direction of the end portion 76a of the main slide cam 76 on the arrow m direction side into the slide region in the m direction from the arrow k direction. And is configured to be pushed by the end 76a.

  As shown in FIGS. 14 and 15, the shutter 23 is configured to be rotatable about the fulcrum 24 in the directions of the arrows c and d such as the up and down directions, and spanned between the chassis 8. A return spring (coil spring) 25 is urged to rotate in the direction of arrow c, such as upward.

  The cam follower roller 26, which is known to be freely rotatable by the shutter 23 via the arm 23a, is controlled to move in the directions of arrows c and d by the shutter opening / closing control cam 111 on the main slide cam 76 in the control mechanism 71 described above. It is configured to be.

In addition, as shown in FIGS. 1, 5, 6, 7, and 14 to 16, a disk clamp mechanism 131 is incorporated in the inner position of the outer casing 7 (on the rear panel 7b side).
In the disc clamp mechanism 131, the clamp arm 132 is supported at the high part of the chassis 8 so as to be rotatable in the arrow r and s directions such as the vertical direction around the fulcrum 133. A clamper 134 is rotatably supported at the tip 132a in a state having play. The clamp arm 132 is urged to rotate in a direction indicated by an arrow s, such as downward, by a return spring (coil spring) 135 that is a moving urging means spanned between the clamp arm 132 and the chassis 8.

  A cam driven roller 136 rotatably attached to the clamp arm 132 via the arm 132c is moved in the directions of arrows r and s by the clamp arm rotation control cam 113 on the main slide cam 76 in the control mechanism 76 described above. The movement is controlled.

  Here, an outline of the operation of selective loading and ejecting by the slot-in method between the small-diameter optical disk 2 and the large-diameter optical disk 3 in the optical disk drive apparatus 1 of the present invention will be described.

First, FIG. 1 shows the loading position and ejection position of a small-diameter optical disc 2 and a large-diameter optical disc 3.
At the time of loading, as will be described later, a small-diameter optical disk 2 and a large-diameter optical disk 3 that are selectively drawn horizontally or the like in the direction of arrow a from the disk loading / unloading slot 11 into the optical disk drive device 1 are indicated by two-dot chain lines. Then, it is lowered while being horizontal, etc., and clamped (chucked) horizontally on the turntable 14 of the spindle motor 13.

  On the other hand, at the time of ejection, as will be described later, the small-diameter optical disk 2 and the large-diameter optical disk 3 are selectively pushed out from the optical disk drive apparatus 1 to the outside of the disk loading / unloading slot 11 in the direction of the arrow b. The extrusion strokes S1 and S2 of the small-diameter optical disc 2 and the large-diameter optical disc 3 are adjusted as indicated by the solid line and the one-dot chain line, and the center holes 2a and 3a of these optical discs 2 and 3 are almost out of the front panel 11. The center holes 2a and 3a are pushed out by the same stroke S0 so that they substantially overlap the disk center P0 outside the front panel 11.

Accordingly, when the user picks the selectively ejected small-diameter optical disc 2 and large-diameter optical disc 3 with, for example, the right hand and pulls it out of the disc loading slot 11 in the direction of arrow b, FIG. As shown by dotted lines, the index finger such as the right hand is inserted into the center holes 2a and 3a of the small-diameter optical disc 2 and the large-diameter optical disc 3, and the outer periphery of these is gripped so as to be sandwiched by the thumb such as the right hand. Thus, the small-diameter optical disc 2 and the large-diameter optical disc 3 can be selectively extracted with the right hand or the like.
When the small-diameter optical disk 2 and the large-diameter optical disk 3 are selectively inserted into the disk loading / unloading slot 11 from the direction of the arrow a, the optical disks 2 and 3 are held with the right hand or the like in the same manner as described above. Can be inserted.

  Therefore, when the user picks up the small-diameter optical disk 2 or the large-diameter optical disk 3 with his / her finger and selectively inserts / extracts the disk into / from the disk slot 11 from the direction of the arrows a and b, either the small-diameter optical disk 2 or the large-diameter optical disk 3 Even in this case, there is an advantage that it is possible to prevent inconveniences such as inadvertently attaching a fingerprint or the like to the data recording surface, which is the lower surface, and causing a failure in later data recording or reproduction. Can do.

  Next, the outline of the selective loading / ejecting operation of the small-diameter optical disc 2 and the large-diameter optical disc 3 will be described with reference to FIGS.

  First, in an initial state before insertion of the optical discs 2 and 3, the main slider 37 and the sub-slider 38 are moved in opposite directions by the return spring 49 as shown by solid lines in FIGS. 1, 2, 7, and 16. They are slid in the directions of certain arrows e and g, and both return to the initial position P11. The main rotating roller 32 and the sub rotating roller 31, and the main non-rotating roller 34 and the sub non-rotating roller 33 mounted on the main slider 37 and the sub slider 38 are returned to the initial position P21.

  In this initial state, as shown by a solid line in FIG. 16, the main slide cam 77 of the control mechanism 71 is slid in the arrow k direction by the return spring 81 to the initial position P31, and the main push arm 61 and the sub push arm The pair of non-rotating rollers 35 and 36 for extrusion are also returned to the initial position P41 via 62.

On the other hand, as shown in FIGS. 4 and 14, the shutter 23 is rotated about the fulcrum 111 to the open position in the direction of arrow c, such as upward, and the rear of the disk loading / unloading slot 11 is opened.
Further, as shown in FIGS. 4 and 14, the clamp arm 132 is also rotated around the fulcrum 133 to the clamp release position in the direction of the arrow r.
[Loading operation of large-diameter optical disc]

  Next, when the large-diameter optical disk 3 is inserted into the optical disk drive device 1 from the disk loading / unloading slot 11 to the position indicated by the one-dot chain line in FIG. 1 from the direction of arrow a as shown in FIG. The outer periphery of the optical disk 3 is pressed from the direction of the arrow a by the sub-rotating roller 31 and the sub-non-rotating roller 33 that are disposed in a symmetrical position with respect to the loading center P1, so that the sub-rotating roller 31 and the sub-non-rotating roller 33 are It is slid in the direction of arrows f and h from the initial position P21.

  At this time, as shown in FIG. 14, the large-diameter optical disk 3 is inserted while expanding a pair of upper and lower skirt portions 12 attached to the disk loading / unloading slot 7a up and down against its elasticity. At this time, the large-diameter optical disk 3 is inserted into the circular recess 31c and the non-circular recess 33c of the sub rotating roller 31 and the sub non-rotating roller 33 from the direction of the arrow a.

  1 and 7, the main slide cam 37 and the sub slide cam 38 are returned from the initial position P1 to the slide position P2 by the interlocking mechanism 46 including a pair of racks 43, 44 and a pinion 45. It is slid in the directions of arrows f and h which are opposite to each other against the spring 49.

  Then, one drive motor 51 is driven to rotate in the forward direction. By the forward rotation drive of this drive motor 51, the free rotation prevention mechanism 54 composed of the worm 52 and the worm wheel 53 and the plurality of idlers 56 shown in FIG. Thus, the sub-rotation roller 31 and the main rotation roller 32 are respectively driven to rotate in the direction of the arrow A1, which is the disk pull-in direction, and the pinion 72 is rotationally driven in the direction of the arrow B1.

  As a result, the high frictional rotational force by the elastic members 31D and 32D such as rubber in the circular recesses 31C and 32C of the sub rotating roller 31 and the main rotating roller 32 shown in FIGS. And the non-circular recesses 33C and 34C of the main non-rotating roller 34 in the direction of arrow a on one side of the outer circumference of the large-diameter optical disk 3 due to the interaction with the high friction anti-slip force of the elastic members 33D and 34D such as rubber. Accordingly, the other side portion of the outer periphery of the large-diameter optical disk 3 sequentially moves on the non-circular recesses 33C and 34C of the sub non-rotating roller 33 and the main non-rotating roller 34 in the direction of arrow a. As shown in FIG. 1, the large-diameter optical disk 3 is rotated along the loading center P1 while the entire large-diameter optical disk 3 is rotated in the direction of the arrow C1. Together shown in FIG. 1 by a two-dot chain line to a position directly above the turntable 14 in the click drive device 1 is drawn automatically into the direction of arrow a as shown by the solid line in FIG.

  At this time, as shown in FIG. 5, the large-diameter optical disk 3 is pulled in the direction of the arrow a in the lower part of the shutter 23 and the clamp arm 132 that are opened in the direction of the arrow c and the direction of the arrow r.

  Further, the front side of the outer periphery of the large-diameter optical disk 3 to be drawn is indicated by a dotted line in FIG. 1 and, as shown in FIG. 4, the circular recesses 35C and 36C of the pair of push-out non-rotating rollers 35 and 36 have arrows a 1 and FIG. 4 against the return springs 67 and 68 in the direction of the arrow i in FIG. 14 centering on the fulcrums 63 and 64, respectively. It is pushed in the direction of arrow a from the initial position P41 to the pushing completion position P42 indicated by the solid line in FIGS.

  As described above, the automatic pull-in operation of the large-diameter optical disk 3 in the direction of the arrow a in the optical disk drive device 1 is completed. At the end of the automatic pull-in operation, the large-diameter optical disk 3 is positioned directly above the turntable 14. And the center of the center hole 3a of the large-diameter optical disc 3 is aligned with the center of the frustoconical centering boss 14a of the turntable 14.

  On the other hand, when the large-diameter optical disc 3 is pulled in the direction of arrow a, the main rotating roller 32 and the main non-rotating roller 33 relatively pass the maximum diameter portion on the outer periphery of the large-diameter optical disc 3 in the direction of arrow b. .

  For this reason, as shown in FIGS. 7, 11 and 12, the main rotating roller 32 and the sub non-rotating roller 33, together with the main slider 37 and the sub-slider 38, once from the initial position P21 have a maximum diameter. After being pushed out in the direction of arrows f and h against the return spring 49 to the corresponding position P23, the stroke is returned by the return spring 49 in the direction of arrows e and g by the stroke S1 and stopped at the pull-in completion position P24. The main rotating roller 32 and the main non-rotating roller 33 are set to positions opposite to the pair of push non-rotating rollers 35 and 36 at the outer peripheral position of the large-diameter optical disc 3.

  Accordingly, as indicated by solid lines in FIGS. 5, 11, and 12, the four points on the outer periphery of the large-diameter optical disk 3 that are automatically drawn in the direction of arrow a to the position directly above the turntable 14 are the main rotating rollers 32. The main non-rotating roller 34 and the pair of extruding non-rotating rollers 35 and 36 are horizontally supported by the circular recesses 32C, 34C, 35C and 36C.

  Next, immediately after this, the first switch 121 is turned off by a mechanical control mechanism 71, which will be described later, and immediately before the second switch 122 is turned on and the drive motor 51 is stopped, FIGS. 12, the main slider 37 and the sub-slider 38 are slid in the directions of arrows f and h against the return spring 49, so that the main rotating roller 32 and the main non-rotating roller 34 are respectively moved. At the same time the pair of non-rotating rollers 35 and 36 for pushing out is pushed in from the pull-in completion position P24 through the intermediate position (disk detachment position) P23 to the disk detachment position P25 by the stroke S2 in the arrow f and h directions. From P42 to the disc release position P43, it is released in the direction of arrow i by the stroke S3 against the return springs 67 and 68. The main rotating roller 32, the main non-rotating roller 34, and the pair of extruding non-rotating rollers 35 and 36 are expanded to each other, and these lower conical roller portions 32B, 34B, 35B and 36B are shown in FIGS. As shown by the one-dot chain line, the outer diameter of the large-diameter optical disk 3 is escaped to the outside, the second switch 122 is turned on, and the drive motor 51 is stopped.

  Then, as shown by a one-dot chain line in FIG. 12, the outer periphery of the large-diameter optical disk 3 slides down the lower conical roller portions 32B, 34B, 35B and 36B due to its own weight. The large-diameter optical disk 3 is lowered in parallel in the direction of the arrow t from the retracted position indicated by the solid line in FIG. 5 to the clamp position (chucking position) to the turntable 14 indicated by the one-dot chain line in FIG.

  In addition, almost simultaneously with this, as will be described later, the clamp arm 132 of the disk clamp mechanism 131 is rotationally driven in the direction of the arrow s from the clamp release position (up position) shown in FIG. 5 to the clamp position (down position) shown in FIG. Then, the clamper 134 supported by the tip of the clamp arm 132 presses the large-diameter optical disk 3 in the direction of the arrow t.

  As a result, as shown in FIGS. 6 and 11, the center hole 3a of the large-diameter optical disk 3 is inserted into the outer periphery of the centering boss 14a at the center of the turntable 14, and clamped (chucking) on the turntable 14. ) Will be. In the state where the large-diameter optical disk 3 is horizontally clamped on the turntable 14, as shown by a one-dot chain line in FIG. 12, the main rotating roller 32, the main non-rotating roller 34, and a pair of extrusion non-rotating rollers The lower conical roller portions 32B, 34B, 35B and 36B of 35 and 36 are completely separated from the outer periphery of the optical disc 2 in the directions of arrows f and i.

  At the same time, as shown in FIG. 6, the shutter 23 is rotationally driven in the direction of the arrow d to the closed position, and the disk loading / unloading slot 11 of the front panel 7a of the optical disk drive apparatus 1 is closed from the inside.

  The shutter 23 prevents double insertion of other optical disks and insertion of foreign matter from the disk loading / unloading slot 11. Further, it is possible to prevent the optical discs 3 and 2 that are damaged when the optical discs 3 and 2 are subsequently rotated at high speed from being scattered outside the disc loading / unloading slot 11 and causing harm to the user.

Thus, the loading operation of the large-diameter optical disc 3 is completed.
Thereafter, when a command signal for recording and reproduction is applied to the optical disk drive device 1, the large-diameter optical disk 3 is driven to rotate by the spindle motor 13, and as shown in FIGS. The thread 17 of the optical pickup unit 16 is sought in the directions of arrows a and b between the guide main shaft 18 and the guide auxiliary shaft 19 by the lead screw 21 that is driven to rotate forward and backward by the thread motor 20, and by the objective lens 16 a of the optical pickup unit 16. A video signal or the like is recorded and reproduced on the optical disc 3 by the laser beam applied to the lower surface of the large-diameter optical disc 3.

It should be noted that the disc discriminating (identifying) whether the currently loaded optical disc is the large-diameter optical disc 3 or the small-diameter optical disc 2 by inertia or the like when the spindle motor 13 rotationally drives the large-diameter optical disc 3. ) Is done automatically.
[Ejecting operation of large-diameter optical disc]

  Next, when an eject command signal is input to the optical disc drive device 1 after recording and reproduction of the large-diameter optical disc 3, one drive motor 51 is rotated in the reverse direction, as shown in FIGS. As shown in FIG. 11, the main rotating roller 32 and the main non-rotating roller 34 are moved together with the main slider 37 and the sub slider 38 in the direction of arrow e from the disk release position P25 to the pull-in completion position P24. The pair of push-out non-rotating rollers 34 and 35 are also moved in the direction of arrow j from the disk release position P43 to the push-in completion position P42 by the spring force of the return springs 67 and 68.

  Then, as shown in FIG. 5, the clamp arm 132 and the shutter 23 are opened in the directions of the arrows r and c, respectively, and at the same time, as shown in FIG. The solid line from the clamping position (chucking position) indicated by the one-dot chain line in FIG. 12 by the rotating roller 32, the main non-rotating roller 34 and the lower conical roller portions 32B, 34B, 35B and 36B of the pair of non-rotating rollers 35 and 36 for extrusion. Is pushed up in parallel with the direction of the arrow u to the pull-in completion position indicated by.

Then, one drive motor 51 is driven to rotate in the reverse direction, and as shown in FIGS. 1 and 11, the main rotating roller 31 and the sub rotating roller 31 are rotated in the direction of arrow A2, respectively.
Then, in the reverse operation of the loading operation described above, the rotational driving force in the direction of the arrow C2 of the large-diameter optical disk 3 by the main rotating roller 32 and the sub rotating roller 31 and the arrows by the pair of extrusion non-rotating rollers 35 and 36 are shown. Due to the interaction between the pushing force in the direction b and the pushing force by the pair of return springs 67 and 68 of the pair of non-rotating rollers 55 and 56 for pushing, the pushing position shown by the one-dot chain line in FIG. The large-diameter optical disk 3 is pushed out from the disk loading / unloading slot 11 of the front panel 7a of the optical disk drive 1 by the stroke S2 in the arrow b direction, and the drive motor 51 is stopped.
At this time, the center hole 3a of the large-diameter optical disc 3 is completely pushed out of the front and the panel 7a by the stroke S0 in the direction of the arrow b and positioned at the center position P0 on the loading center P1.

At this time, the large-diameter optical disk is caused by the high frictional holding force by the elastic members 31D and 33D such as rubber of the circular recesses 31C and 33C of the sub rotating roller 31 and the sub non-rotating roller 33 shown in FIGS. With the two points on the outer periphery of 3 being held elastically from the directions of arrows e and g, the large-diameter optical disk 3 is stopped at the pushing position indicated by the one-dot chain line in FIG. It is kept as it is.
The large-diameter optical disk 3 pushed out in this way is elastically and auxiliaryally held by a pair of upper and lower skirt portions 12 of the disk loading / unloading slot 11 shown in FIG.
[Loading / ejecting operation of small-diameter optical disks]

Note that the loading and ejecting operation of the small-diameter optical disc 2 is performed in the same manner as the loading and ejecting operation of the large-diameter optical disc 3 described above.
That is, as shown by the solid line in FIG. 1, the small-diameter optical disk 2 is inserted from the disk loading / unloading slot 11 in the direction of arrow a, and the sub-rotating roller 31 and the sub non-rotating roller 33 together with the main slider 37 and the sub-slider 38. Is slightly slid in the directions of arrows f and h, one drive motor 51 is driven to rotate forward.

  Then, both the sub-rotating roller 31 and the main rotating roller 32 are driven to rotate forward in the direction of the arrow A1, and the small-diameter optical disk 2 is shown directly above the turntable 14 shown by a one-dot chain line in FIG. The small-diameter optical disk 2 is automatically pulled in the direction of the arrow a while pushing the pair of left and right push non-rotating rollers 35 and 36 in the direction of the arrow i.

  Then, immediately before the drive motor 51 stops, as shown in FIG. 13, the main rotating roller 32 and the main non-rotating roller 34 are moved in the direction of arrows f and h by the stroke S2 from the pull-in completion position P24 to the disk release position P25. At the same time, the pair of push non-rotating rollers 35 and 36 are moved in the direction of arrow i by the stroke S3 from the push-in completion position P42 to the disk release position P43, and the small-diameter optical disk 2 is placed on the turntable 14. Clamping (chucking) is performed, the second switch 122 is turned on, and the drive motor 51 is stopped.

  Even after loading the small-diameter optical disk 2, the small-diameter optical disk 2 is rotationally driven by the spindle motor 13 by applying a command signal for recording and reproduction to the optical disk drive device 1, as with the large-diameter optical disk 3. At the same time, recording and reproduction of video signals and the like on the optical disc 2 are performed by the laser beam applied to the lower surface of the small-diameter optical disc 2. Then, disc identification (identification) of whether the currently loaded optical disc is the large-diameter optical disc 3 or the small-diameter optical disc 2 by inertia or the like when the spindle motor 13 rotates and drives the small-diameter optical disc 2. Is done automatically.

  Further, at the time of recording and reproducing a video signal or the like on the small-diameter optical disc 2, as shown in FIG. 13, the main rotating roller 32 and the main non-rotating roller 34 are moved from the disc separating position P25 to the drawing completion position P24. The pair of non-rotating rollers 35 and 36 for pushing are also moved in the direction of the arrow j from the disk release position P43 to the push-in completion position P42 while the small-diameter optical disk 2 is turned in the turntable 14. Is lifted (disengaged) in parallel above.

Then, after this, one drive motor 51 is reversely driven, and the main rotary roller 32 and the sub rotary roller 31 are reversely driven in the direction of the arrow A2, whereby a pair of extrusion non-rotating rollers 35, 36 are driven. Due to the interaction with the push-out action in the direction of the arrow j, the small-diameter optical disk 2 is moved from the pull-in completion position P24 shown by a one-dot chain line in FIG. 1 to the disk slot 11 of the front panel 7a as shown by the solid line. Is pushed out in the direction of the arrow b by the stroke S1, and the drive motor 51 is also stopped.
At this time, the center hole 2a of the small-diameter optical disk 2 is completely pushed out of the front and the panel 7a by the stroke S0 in the direction of the arrow b and positioned at the center position P0 on the loading center P1.

Also in this case, the small diameter of the sub-rotating roller 31 and the sub non-rotating roller 33 shown in FIGS. 8 and 9 is reduced by the high friction holding force by the elastic members 31D and 33D such as rubber in the circular recesses 31C and 33C. With the two points on the outer periphery of the optical disk 2 held elastically from the directions of arrows e and g, the small-diameter optical disk 3 is stopped at the pushing position indicated by the solid line in FIG. Retained.
The extruded small-diameter optical disk 2 is also elastically and supplementarily held from above and below by the pair of upper and lower skirt portions 12 shown in FIG.

Here, the one-motor drive type mechanical control mechanism 71 disclosed in FIGS. 16 to 18 and the like is controlled by the first and second switches 121 and 122 disclosed in FIGS. Thus, a control operation for selectively loading and ejecting the two types of optical disks 2 and 3 having a small diameter and a large diameter will be described mainly with reference to FIGS. 19 to 25 with reference to the time chart of FIG.
[Control action when loading large-diameter optical disc 3]

  First, in the initial state before starting the loading of the large-diameter optical disc 3, as shown in FIGS. 2, 3, 16 to 18, and 25, the main slide cam 76 of the mechanical control mechanism 71 is returned. The sub-slide cam 77 of the first control mechanism 71A is returned to the initial position 31a on the main slide cam 76 by the return spring 84 in the direction of the arrow n. The second switch 122 shown in FIG. 3 is OFF.

  As shown in FIGS. 2, 3, 16 to 18, and the like, with a support shaft of a pinion 72 that is rotatably attached to the lower portion of the main slider 37 that is returned to the initial position P11 in the direction of arrow e. The lower end of the support shaft 72a protruding downward from the pinion 72 is inserted into a connecting groove 94 parallel to the arrow e and f directions of the main slider 76.

  Further, since the main slider 37 is returned to the initial position P11 in the direction of the arrow e, the actuator 121a of the first switch 121 shown in FIG. The first switch 121 is turned off at the lower portion 123a.

  18 and 25, the cam follower pin 105 and the sub-slide cam 77 attached to the lower part of the other end 61b of the main push-out arm 61 that is urged to rotate in the direction of arrow j by the return spring 67. Are in contact with or in close proximity to each other.

  Next, in FIG. 25, as described above, the large-diameter optical disk 3 is inserted into the disk loading / unloading slot 11 in the direction of the arrow a along the loading center P1, and the front side of the outer periphery of the optical disk 3 is a pair of left and right. The timing at which the non-rotating rollers 35 and 36 are pushed from the direction of arrow a is shown.

  At this timing, as described above, the main slider 37 moves from the initial position P11 shown in FIG. 16 and the like to the moving position P13 shown in FIG. 18 via the sub rotary roller 31 and the main rotary roller 32 in the first control mechanism 71A. It will be in the state moved to the arrow f direction.

  As shown in FIG. 18, the pinion 72 and the support shaft 72a attached to the lower part of the end of the main slider 37 on the arrow f direction side move the first rack 95 of the first sub slide cam 76 in the arrow f direction. The lower end of the support shaft 72a reaches the end of the connecting groove 94 of the sub slide cam 76 on the arrow f direction side.

  At this time, at the moment when the main slider 37 starts to move from the initial position P11 in the direction of the arrow f, the actuator 121a of the first switch 121 shown in FIG. As shown in the time chart of FIG. 32, the first switch 121 is turned on, and the drive motor 51 starts to rotate forward. Thereafter, the actuator 121a of the first switch 121 is lowered from the high portion 123b to the next low portion 123c, and the first switch 121 is turned off, but the forward rotation of the drive motor 51 is continued. The

  On the other hand, as described above, the sub rotation roller 31 and the main rotation roller 32 are rotationally driven in the direction of the arrow A1 by the normal rotation of the drive motor 51, and as shown in FIGS. 18 and 25, in the first control mechanism 71B. The pinion 72 is rotationally driven in the direction of arrow B1.

  Then, as described above, the sub-rotating roller 31 and the main rotating roller 32 that are rotationally driven in the direction of the arrow A1 cause the large-diameter optical disc 3 to move to the arrow as shown in FIG. 26 and as shown in the time chart of FIG. The pair of non-rotating rollers for extrusion 35 and 36 in the second control mechanism 71B are pushed in the direction of arrow a by the optical disk 3 automatically drawn in the direction a, and the other end 61b of the main pushing arm 61 is a fulcrum 63. Is driven to rotate in the direction of arrow i against the return spring 67.

  19, 26, and 27, and as shown in the time chart of FIG. 32, the cam follower pin 105 in the second control mechanism 71 </ b> B is formed in the arc-shaped groove 104 around the fulcrum 63 of the main push-out arm 61. It is moved (turned) in the arc-shaped groove 104 from the end portion 104a on the arrow j direction side along the arc-shaped locus in the direction of the arrow i.

  At this time, as shown in FIG. 19, the cam follower pin 105 pushes the end 77a of the sub slide cam 77 on the arrow n direction side in the arrow o direction, and the sub slide cam 77 moves from the initial position P31a on the main slide cam 76. It is pushed out in the direction of arrow o against the return spring 84 to the movement position P31b.

Then, as indicated by a one-dot chain line in FIG. 19, the arc-shaped notch 106 connected to the end 77a of the sub-slide cam 77 is released from the arc-shaped groove 104 in the direction of arrow o, and the arc-shaped Since the entire groove 104 is opened, the cam follower pin 105 is moved in the arrow j direction to the other end 104b to which the first cam groove 102 is connected, and the cam follower pin 105 causes the cam follower pin 105 to move on the main slide cam 76. The movement position P31b of the sub slide cam 77 is held.
As a result, the tip end of the first rack 95 of the sub slide cam 77 in the first control mechanism 71A enters the arrow e direction side of the pinion 72 from the arrow o direction.

  On the other hand, as described above, the sub-rotating roller 31 and the main rotating roller 32 that have already been driven to rotate in the direction of the arrow A1 by the drive motor 51, and the sub-non-rotating roller 33 and the main non-rotating roller 34 in total. The large-diameter optical disk 3 is automatically pulled in the direction of arrow a as shown in FIGS. 25 to 27. The optical disk 3 passes from the retracted position in FIG. 25 to the retracted position in FIG. As described above, while the main rotating roller 32 and the sub rotating roller 31 are integrated with the main slider 37 and interact with the return spring 49, the outer periphery of the large-diameter optical disc 3 is moved in the direction of the arrow f. Once escaped, a reciprocating operation is performed again to return in the direction of arrow e.

Therefore, as shown in FIG. 19, the sub slide cam 77 of the first control mechanism 71A is moved in the arrow o direction on the main slide cam 76 by the stroke S30, and the end of the first rack 95 on the arrow o direction side is moved. 20 to 27, the main slider 37 is returned from the moving position P13 shown in FIG. 19 to the moving position P14 shown in FIG. 20 in the arrow e direction. The pinion 72 is moved in the direction of arrow e together with the main slider 37. Then, the pinion 72 is automatically engaged with the first rack 95.
Then, the pinion 72 that has already been rotationally driven in the direction of the arrow B1 drives the first rack 95, and as shown in FIGS. 21 and 28, the sub slide cam 77 on the main slide cam 76 moves in the direction of the arrow o. Driven.

  As shown in FIG. 21, in the first control mechanism 71A, when the pinion 72 drives the first rack 95 in the direction of the arrow o, as shown in FIGS. 21 and 28, the main slide cam 76 becomes the sub slide cam. In the same manner as 77, the stroke is moved in the arrow m direction by a large stroke S31 from the initial position P31 to the movement position P32.

  Then, as shown in FIG. 3, the end 76a of the main slide cam 76 on the arrow m direction side pushes the actuator 122a of the second switch 122 from the arrow m direction, and the second switch 122 is turned on. Then, as shown in the time chart of FIG. 32, the drive motor 51 is stopped by the operation of the second switch 122.

  Further, due to the movement of the stroke S31 of the main slide cam 76 in the direction of the arrow m, the cam follower 136 of the clamp arm 132 is clamped by the main slide cam 76 as shown in FIG. The arm pivot control cam 113 is lowered in the arrow k direction, and the clamper 134 at the tip of the clamp arm 132 starts to move from the clamp release position shown in FIG. 14 to the clamp position shown in FIG.

On the other hand, the large-diameter optical disk 3 has already reached the position directly above the turntable 14 at the position shown in FIG.
21, 27, and 28, when the pinion 72 that is rotationally driven in the direction of the arrow B <b> 1 drives the first rack 95 in the direction of the arrow o, the lower end of the support shaft 72 a of the pinion 72 is The sub slide cam 77 is configured to be relatively moved in the direction of the arrow n in the first cam groove 92.

  Accordingly, the first and second cam grooves 92 and 93 and the first and second racks 95 and 96 shown in FIG. 21 correspond to the deviation amount S32 in the directions of arrows e and f set by the inclination angle θ1. The main slide cam 76 is moved in the direction of the arrow f from the position shown in FIG. 27 to the position shown in FIG.

  On the other hand, in the second control mechanism 71B, the main slide cam 76 is moved in the arrow m direction by a large stroke S31 from the initial position P31 shown in FIGS. 19 and 27 to the slide position P32 shown in FIGS. The cam follower pin 105 relatively enters the first cam groove 102 from the end of the arc-shaped groove 104 in the direction of arrow i in the direction of arrow k.

  Then, the cam driven pin 105 of the main push-out arm 61 is shifted by a small deviation amount S32 in the direction of arrow e set by the small inclination angle θ2 of the first and second cam grooves 102 and 103 shown in FIG. The tip 61a of the main push-out arm 61 is rotationally driven in the direction of arrow i by being driven to rotate in the direction of arrow i around the fulcrum 63.

  By the control operation by the mechanical control mechanism 71 described above, as shown by a solid line in FIGS. 11 and 12, and as shown in FIG. 27, the main rotating roller 32 and the main non-rotating roller 34 and a pair of left and right push non-extrusions. From the position where the rotating rollers 35 and 36 hold the outer periphery of the large-diameter optical disc 3, the main rotating roller 32 and the main non-rotating are shown in FIG. 11 and FIG. Control is automatically executed to the position where the roller 34 and the pair of left and right push-out non-rotating rollers 35 and 36 are separated from the outer periphery of the large-diameter optical disc 3 in the directions of arrows f, h and i, respectively. Then, as described with reference to FIG. 12, the large-diameter optical disk 3 has a total of four lower conical roller portions 32B, 34B, 35B including a main rotating roller 32 and a main non-rotating roller 34 and a pair of left and right push rollers 35, 36, and The optical disk 73 is lowered along the slope of 36B by its own weight in the direction of the arrow t, and the optical disk 73 is clamped (chucked) on the turntable 14 by the clamper 134 at the tip of the clamp arm 132.

  However, when the large-diameter optical disk 3 is clamped on the turntable 14, as shown in the time chart of FIG. 32, the drive state of the drive motor (DC motor) 51 is changed from high-speed control by voltage control to low-speed control by pulse control. Can be switched to.

  Accordingly, the main rotating roller 32 and the sub rotating roller 31 and the pair of left and right extruding non-rotating rollers 35 and 36 are shown in FIG. 21, and the drawing completion position P24 and the pushing completion shown by solid lines in FIGS. 11 and 12 are moved from the position P42 to the disk detachment positions P25 and P43 shown in FIG. 28 at low speeds in the directions of arrows f, h and i, respectively. It will be.

  As a result, the large-diameter optical disc 3 has the main rotary roller 32, the main rotating roller 32, the main rotating roller 32 from the pull-in completion position (upward position) indicated by a solid line to the clamp position (downward position) indicated by a one-dot chain line. The non-rotating roller 34 and the pair of left and right extruding non-rotating rollers 35 and 36 are lowered slowly and safely while maintaining the horizontal state along the inclined surfaces of the lower conical roller portions 32B, 34B, 35B and 36B.

Therefore, the center hole 3a of the optical disk 3 can be accurately fitted to the outer periphery of the centering boss 14a of the turntable 14, and a clamping error (chucking error) of the optical disk 3 with respect to the turntable 14 can be prevented. be able to.
[Control action when ejecting large-diameter optical disc]

Next, the ejecting operation of the large-diameter optical disc 3 is executed in the reverse order of the loading operation described above.
That is, as described above, when an eject command signal is input to the optical disc drive apparatus 1 after recording and reproduction of the large-diameter optical disc 3, the drive motor 51 is driven in reverse rotation, and as shown in FIG. The rotary roller 31 and the main rotary roller 32 are reversely driven in the direction of arrow A2, and the pinion 72 is reversely driven in the direction of arrow B2.

  Then, as shown in FIGS. 20, 21, and 27, the first rack 75 of the sub slide cam 77 is driven in the direction of arrow n by the pinion 72 that is reversely driven in the direction of arrow B 2. Is moved against the return spring 84 together with the main slide cam 76 and from the moving position P32 shown in FIGS. 21 and 28 to the initial position P31 shown in FIGS. Only S31 returns to the arrow k direction.

  Moreover, at this time, the lower end of the support shaft 72a of the pinion 72 is relatively moved in the direction of the arrow o in the first cam groove 92 of the main slide cam 76, so that the main slider 37 is shown in FIGS. It is moved in the direction of arrow e from the position to the position shown in FIGS.

  On the other hand, at this time, as shown in FIG. 20, the cam follower pin 105 of the main push-out arm 61 is relatively moved in the linear first cam groove 101 to the other end 104b of the arc-shaped groove 104 in the arrow m direction. Thus, the arc-shaped notch 106 of the sub slide cam 77 is brought into contact with the cam follower pin 105 against the return spring 84.

  Then, while the cam follower pin 105 moves in the first cam groove 102 in the direction of the arrow m, the main push arm 61 and the sub push arm 62 interlocked with the main push arm 61 are centered on the fulcrums 63 and 64, respectively. From the position shown in FIG. 27 to the position shown in FIG.

  When the user pulls out the large-diameter optical disk 3 out of the disk loading / unloading slot 11 in the direction of arrow b, the main slider 37 supporting the sub-rotating roller 31 and the sub non-rotating roller 33 holding the optical disk 3. The sub-slider 38 returns to the initial position P11 in the directions of arrows e and g by the return lever 49. Therefore, the actuator 121a of the first switch 121 is also moved from the high portion 123b of the switch operation cam 123 to the low portion 123a, and the first switch 121 is turned off.

  As described above, the main rotating roller 32 and the main non-rotating roller 33 and the pair of left and right pushing non-rotating rollers 35 and 36 are indicated by solid lines from the disk separation positions P25 and P43 indicated by the one-dot chain lines in FIG. It is moved in the directions of arrows e and j to the retracting completion position P24 and the pushing completion position P42.

  As a result, as described with reference to FIG. 12, the large-diameter optical disk 3 is raised in parallel in the direction of the arrow u from the loading position (lowering position) indicated by the one-dot chain line to the drawing completion position (upward position) indicated by the solid line.

  Thereafter, as described above, the main rotating roller 32 and the sub rotating roller 31, which are driven to rotate in the direction of the arrow A2, the main non-rotating roller 34 and the sub non-rotating roller 33 are moved by the return spring 49 to the arrow e, Interaction between the backward movement in the g direction and the pair of pushing non-rotating rollers 35 and 36 being pushed out in the arrow j direction by the pair of return springs 67 and 68 via the pair of pushing arms 61 and 62. As a result, the large-diameter optical disk 3 is automatically pushed out in the direction of arrow b in FIG. Finally, the large-diameter optical disk 3 is pushed out by the sub-rotating roller 31 and the sub-non-rotating roller 33 into the disk loading / unloading slot 11 indicated by a one-dot chain line in FIG.

  At this time, the main push arm 61 and the sub push arm 62 are driven to rotate in the direction of arrow j by return springs 67 and 68 as shown in FIGS. 36, the cam follower pin 105 of the main push-out arm 61 is moved from one end 104b of the arc-shaped groove 104 shown in FIGS. 19 and 20 to the other. Move to the end 104a in the direction of arrow j.

Then, when the cam follower pin 105 is returned in the direction indicated by the arrow j through the arc-shaped groove 104 to the one end 104a shown in FIG. 18, the sub slide cam on the slide slide cam 76 as shown in FIGS. 77 is returned by the return spring 84 in the direction of arrow n from the movement position P31b to the initial position P31a by the stroke S30.
Then, as indicated by solid lines in FIGS. 18 and 25, the first rack 95 of the sub slide cam 77 is completely detached from the pinion 72 in the direction of arrow n.

  Then, as the first rack 95 is detached from the pinion 72 in the direction of arrow n, the main slider 37 and the sub slider 38 are returned to the main slider 37 and the sub-slider 38 in the directions of arrows e and g as shown in FIGS. 25, the main rotating roller 32 and the main non-rotating roller 35 are on the outer periphery of the large-diameter optical disc 3, and the rear side (arrow a direction side) from the center of the optical disc 3 is seen from both the left and right sides. It is elastically pressed in the directions of arrows e and g.

  Then, in the reverse operation at the time of loading described above, the large-diameter optical disk 3 is sequentially inherited by the main rotating roller 32 and the main non-rotating roller 34, and the sub rotating roller 31 and the sub non-rotating roller 33, so that FIG. Is pushed out horizontally in the direction of arrow b.

  At this time, as shown in the time chart of FIG. 32, when the optical disk 3 is pushed out in the second half of the pushing stroke of the large-diameter optical disk 3, that is, when the optical disk 3 is pushed out in the direction of arrow b outside the disk loading / unloading slot 11. Is controlled again at a low speed, and the large-diameter optical disk 3 is safely pushed out of the disk slot 11 from the direction of the arrow b to the pushing position indicated by the one-dot chain line in FIG. .

  On the other hand, since the large-diameter optical disk 3 is discriminated (identified) in advance during the above-described reproduction, the sub-rotating roller 31 and the main rotating roller 32 are returned to the positions P22 and P24 indicated by the one-dot chain line in FIG. At the time, as shown in the time chart of FIG. 32, the first switch 121 is turned on and the drive motor 51 is stopped.

  Moreover, as shown in the time chart of FIG. 32, when the large-diameter optical disk 3 is pushed out of the disk loading / unloading slot 11 in the direction of the arrow b, the drive motor 51 is controlled again at a low speed. 3 is pushed out of the disk loading / unloading slot 11 slowly (low speed) to the pushing position indicated by a one-dot chain line in FIG. 1, and the optical disk 3 is pushed out of the disk loading / unloading slot 11 accurately by the stroke S2. Will be.

  When the large-diameter optical disc 3 is ejected, as shown in the flowchart of FIG. 32, the main slider 37 is moved from the position shown in FIG. 28 to the position shown in FIG. The actuator 121a of the first switch 121 that has been moved up from the other low portion 123b of the switch operating cam 123 to the high portion 123b, the first switch 121 is ON, the drive motor 51 is stopped, and the large diameter Ejection (discharge) of the optical disk 3 is also stopped.

  At this time, the large-diameter optical disk is caused by the high frictional holding force by the elastic members 31D and 33D such as rubber of the circular recesses 31C and 33C of the sub rotating roller 31 and the sub non-rotating roller 33 shown in FIGS. The large-diameter optical disk 3 is stopped at the push-out position indicated by a one-dot chain line in FIG. 1 in a state where the two points on the outer periphery of 3 are elastically held from the directions of arrows e and g.

Then, as shown in FIG. 4, the large-diameter optical disk 3 pushed out of the disk loading / unloading slot 11 in the direction of the arrow b is elastically and safely secured from above and below by the upper and lower skirt portions 12 of the disk loading / unloading slot 11. Retained.
[Control action when loading small-diameter optical disc]

  Next, as shown in FIGS. 22 to 24 and FIGS. 29 to 31, when the small-diameter optical disk 2 is loaded, it is rotated in the direction of the arrow A1 by the drive motor 51 in the same manner as when the large-diameter optical disk 3 is loaded. The optical disk 2 is drawn from the disk loading / unloading slot 11 into the optical disk drive device 1 in the direction of arrow a by the driven sub-rotating roller 31 and main rotating roller 32. Further, as shown in FIG. 22, the pinion 72 is also rotationally driven in the direction of the arrow B1 by the drive motor 51.

  Then, the small-diameter optical disk 2 is pulled from the position of FIG. 29 to the position of FIG. 30, and the pair of left and right push non-rotating rollers 35 and 36 is pushed by the optical disk 2 in the direction of the arrow i by a predetermined distance. As shown, the cam follower pin 105 is rotated by a small angle in the direction of arrow i from the end 104a of the arc-shaped groove 104 of the main slide cam 77 to the front end of the second cam groove 103, and the sub slide cam 76 is moved to the main slide. As shown in FIG. 23, the pinion 72 that has already been rotationally driven in the direction of the arrow B1 is moved to the second rack 96 almost simultaneously with the sliding of the stroke 77 of the stroke S31 from the initial position P31a to the slide position P31b with respect to the cam 77. Is engaged.

  As shown in FIGS. 24 and 31, the second rack 96 is moved in the direction of the arrow o by the pinion 72 that is driven to rotate in the direction of the arrow B1 at the moment when the small-diameter optical disk 2 reaches the position directly above the turntable 14. And the lower end of the support shaft 72a of the pinion 72 relatively enters the second cam groove 93 in the direction of the arrow n. At the same time, the main slide cam 76 is integrated with the sub slide cam 77 at the initial position. The stroke S31 is moved in the direction of arrow m from P31 to the slide position P32.

Then, as shown in FIG. 24, the cam follower pin 105 relatively enters the second cam groove 103 from the arcuate groove 104 in the direction of the arrow k.
As a result, as in loading of the large-diameter optical disc 3, as shown in FIG. 25, the main rotating roller 32 and the main non-rotating roller 34 and the pair of left and right push non-rotating rollers 35 are provided on the small-diameter optical disc 2. As described above, the small-diameter optical disc 2 is clamped (chucked) on the turntable 14 by being detached from the outer periphery in the directions of arrows i, k and i.

  The ejecting operation of the small-diameter optical disc 2 is performed in substantially the same process as the ejecting operation of the large-diameter optical disc 3 described above, and ejects out of the disc loading / unloading slot 11 in the direction of arrow b as shown by the solid line in FIG. However, when the small-diameter optical disk 2 is ejected, the current optical disk is also recorded by the inertia of the spindle motor 13 during the recording and reproduction of the optical disk 2 in the same manner as the recording and reproduction of the large-diameter optical disk 3 described above. Is a small diameter optical disk or a large diameter optical disk.

When the small-diameter optical disk 2 is ejected out of the disk loading / unloading slot 11, the central hole 3a of the small-diameter optical disk 2 is inserted into the central hole 3a of the large-diameter optical disk 3 indicated by a one-dot chain line in FIG. When the small-diameter optical disk 2 is ejected out of the disk loading / unloading slot 11 by the stroke S1 that can be matched, the drive motor 51 is stopped so that the ejection operation of the small-diameter optical disk 2 is completed. It is configured.
That is, the drive motor 51 stops when the first switch 121 is turned on from the OFF state and further turned off, and the state becomes the initial state at the same time.
[Features of optical disk drive]

  The optical disk drive apparatus 1 configured and operated as described above uses one drive motor, one motor using two switches, and a two-switch mechanical control mechanism 71. The cost can be reduced by simplifying the structure, and each timing at the time of loading and ejecting the optical discs 2 and 3 can be clearly discriminated (identified), so that malfunction is unlikely to occur and smooth. It is possible to perform a loading eject.

  Without moving the spindle motor 13 and the turntable 14 up and down, with the spindle motor 13 and the turntable 14 set in place, the sub rotating roller 31 and the main rotating roller 32 that are disk loading means, and the sub non-rotating roller 33. The main non-rotating roller 34 and the pair of left and right push non-rotating rollers 35 and 36 selectively pull the two types of large and small optical disks 2 and 3 horizontally from the disk loading / unloading slot 11 and then descend in a horizontal state. Since clamping (chucking) is performed on the turntable 14, the height (thickness) T of the optical disc drive apparatus 1 shown in FIG. 4 can be remarkably reduced.

  Without rotating the spindle motor 13 and the turntable 14, the sub rotating roller 31 and the main rotating roller 32, which are disk loading means, the sub non-rotating roller 33 and the main non-rotating roller 34, and a pair of left and right push non-rotating rollers 35 and 36, after the two types of large and small optical disks 2 and 3 are selectively drawn horizontally from the disk loading / unloading slot 11, they are immediately lowered and clamped (chucked) on the turntable 14. The operation time for selectively loading and ejecting the optical disks 2 and 3 can be shortened, and the selective loading and ejecting of the optical disks 2 and 3 can be performed smoothly.

  A sub-rotating roller 31 and a main rotating roller 32, which are disk loading means, a sub non-rotating roller 33 and a main non-rotating roller 34, and a pair of left and right push non-rotating rollers 35 and 36, are used for two types of optical disks 2, 3 The two types of large and small optical disks 2 and 3 are selectively pulled horizontally from the disk loading / unloading slot 11 so as to hold the outer periphery of the disk, and immediately descend in the horizontal state to be clamped on the turntable 14 (chucking). Therefore, the recording surface which is the lower surface of these optical discs 2 and 3 is not contaminated or damaged, and the safety is very high.

  Moreover, the sub-rotating roller 31 and the main rotating roller 32, the sub non-rotating roller 33 and the main non-rotating roller 34, and the pair of left and right extruding non-rotating rollers 35 and 36 are formed in a substantially drum shape, respectively. Selective loading and ejecting by selectively holding the outer circumferences of the two types of large and small optical disks 2 and 3 by circular recesses 31C, 32C, 33C, 34C, 35C and 36C formed in substantially the middle between the upper and lower sides Therefore, the phase of the optical discs 2 and 3 does not inadvertently fluctuate up and down during the loading and ejecting operation, and the selective loading and ejecting operation of the optical discs 2 and 3 can be accurately performed. it can.

  Further, the main rotating roller 32 and the main non-rotating roller 34 and the lower conical roller portions 32B, 34B, 35B and 36B of the pair of left and right extruding non-rotating rollers 35 and 36 are used to make the main rotating roller 32 and the main non-rotating roller 34 By simply pressing and separating the rotating roller 34 and the pair of left and right push-out non-rotating rollers 35 and 36 against the outer circumference of the optical disk 2 or 3, the optical disk 2 or 3 remains in a horizontal state with respect to the turntable 14. The structure that moves up and down is simple in structure, stable in operation, and low in cost.

Furthermore, the sub-rotating roller 31 and the main rotating roller 32, which are disk loading means, and the sub non-rotating roller 33 and the main non-rotating roller 34, both right and left sides that are perpendicular to the loading direction of the optical disks 2 and 3. The structure in which the optical discs 2 and 3 are selectively sandwiched from each other can be loaded and ejected so that the optical discs 2 and 3 can be turned and loaded onto the bull 14 accurately and smoothly. Can be accurately ejected to the loading center P1 of the disk loading / unloading slot.
[Features of free rotation prevention mechanism]

  By the way, as disclosed in FIG. 7 and the like, the motor shaft 53a of the drive motor 51 and a plurality of idlers 56 that transmit the rotational force from the drive motor 51 to the sub rotary roller 31, the main rotary roller 32, and the pinion 72. A free rotation prevention mechanism 54 composed of a worm 52 and a worm wheel 53 incorporated on the input side of the rotational force transmission path composed of, for example, prohibits rotation by the external force of the sub-rotation roller 31.

  Therefore, this optical disk drive apparatus 1 is used not only for general horizontal use, but also for downward vertical use in which the disk loading / unloading slot 11 is set downward, and for upward vertical use in which the disk loading / unloading slot 11 is set upward. The safety in various vertical uses such as the use and the use of the disk loading / removing slot 11 in a vertical position is very high.

That is, for example, in the case of downward vertical use in which the disk loading / unloading slot 11 is set downward, the small and large diameter optical disks 2 and 3 are vertically inserted and ejected upward from the disk loading / unloading slot 11. In the state where the ejection of the small-diameter and large-diameter optical discs 2 and 3 is completed, the optical discs 2 and 3 are arranged so that the upper outer circumference is between the sub-rotating roller 31 and the sub-non-rotating roller 33 and the spring of the return spring 49 It is held in a suspended state in a state of being sandwiched by force, and an external force is applied to the sub rotation roller 31 by the gravity of these optical disks 2 and 3.
However, since the free rotation prevention mechanism 54 prohibits rotation by the external force of the sub-rotating roller 31, these optical disks 2 and 3 can be safely held in a suspended state.

Although the best mode of the present invention has been described above, the present invention is not limited to the disk clamp mechanism of the optical disk drive apparatus that records and reproduces optical disks, and various disk apparatuses that record and / or reproduce various disks. Can be applied to.
Further, the interlocking mechanism 46 is not limited to the combination structure of the two racks 43 and 44 and the pinion 45 described above, and for example, a pair of sliders 37 at both ends of a seesaw type lever having a fulcrum at the center in the length direction. Various modifications such as a structure for sliding the 38 in opposite directions to each other are possible.
Further, the free rotation prevention mechanism 54 is not limited to the combination structure of the worm 52 and the worm wheel 53 described above. For example, a structure in which two spiral gears intersect or two bevel gears having different diameters intersect each other. Various changes in the structure and the like are possible.

It is the top view which notched and showed the upper surface of the optical disk drive device of this invention. It is the bottom view which notched and showed the bottom face of the optical disk drive device of this invention. It is the bottom view which expanded and showed the principal part of FIG. FIG. 2 is a longitudinal sectional side view of FIG. 1 showing disclosure of loading of an optical disc and completion of ejection. FIG. 5 is a longitudinal sectional side view similar to FIG. 4, showing an intermediate state of loading and ejection of an optical disc. 6 is a longitudinal sectional side view similar to FIG. 5, showing the end of loading of the optical disc. FIG. FIG. 3 is a plan view showing a driving mechanism for rotating rollers and non-rotating rollers for loading and ejecting an optical disc in the optical disc drive apparatus of the present invention. FIG. 8 is an enlarged cross-sectional view and a plan view taken along the line AA of FIG. 7 for explaining a rotating roller of the optical disk drive device of the present invention. FIG. 8 is an enlarged cross-sectional view and a plan view taken along the line BB in FIG. 7 for explaining a non-rotating roller of the optical disk drive device of the present invention. FIG. 4 is a cross-sectional view and a plan view for explaining an extrusion roller of the optical disc drive apparatus of the present invention. FIG. 6 is a plan view for explaining a loading completion state of a large-diameter optical disc in the optical disc drive apparatus of the present invention. FIG. 5 is a partially cutaway side view for explaining the operation of clamping (chucking) and releasing the clamp with respect to the turntable of the optical disc in the optical disc drive apparatus of the present invention. FIG. 6 is a plan view for explaining a loading completion state of a small-diameter optical disc in the optical disc drive apparatus of the present invention. FIG. 5 is a partially cutaway side view for explaining the opening / closing operation of a disc clamper and a shutter in the optical disc drive apparatus of the present invention. FIG. 16 is a partially cutaway side view similar to FIG. 15. FIG. 3 is a partially cutaway plan view showing the entire loading / ejecting mechanism of the optical disc drive apparatus of the present invention. It is a perspective view explaining the mechanical control mechanism which is the principal part of FIG. It is the top view which showed the initial state of the mechanical control mechanism same as the above. FIG. 10 is a plan view for explaining the sliding operation of the sub-sliding cam by the main push-out arm of the mechanical control mechanism same as above when loading a large-diameter optical disc. FIG. 6 is a plan view for explaining the engagement of a pinion driven by a motor of a main slider with respect to a first rack of a sub slide cam of the mechanical control mechanism of the above when loading a large-diameter optical disc. FIG. 5 is a plan view for explaining a state in which a sub slide cam and a main slide cam are slid and driven through a first rack by a pinion driven by a motor of a mechanical control mechanism as described above when loading a large-diameter optical disc. FIG. 10 is a plan view for explaining the sliding operation of the sub-sliding cam by the main push-out arm of the mechanical control mechanism same as above when loading a small-diameter optical disk. FIG. 10 is a plan view for explaining the engagement of the pinion driven by the motor of the main slider with respect to the first rack of the sub slide cam of the mechanical control mechanism of the above when loading the small-diameter optical disk. FIG. 5 is a plan view for explaining a state in which a sub slide cam and a main slide cam are slid and driven through a first rack by a pinion driven by a motor of a mechanical control mechanism as described above when loading a small-diameter optical disk. FIG. 5 is a plan view showing an initial stage of a loading operation of a large-diameter optical disc in the optical disc drive apparatus of the present invention. FIG. 26 is a plan view for explaining a loading operation of a large-diameter optical disc following FIG. 25. FIG. 27 is a plan view for explaining a loading operation of a large-diameter optical disc following FIG. 26. FIG. 27 is a plan view for explaining the end of the loading operation of a large-diameter optical disc following FIG. FIG. 6 is a plan view for explaining an initial stage of a loading operation of a small-diameter optical disc in the optical disc drive apparatus of the present invention. FIG. 30 is a plan view for explaining a loading operation of a small-diameter optical disc following FIG. 29. FIG. 31 is a plan view for explaining the end of the loading operation of a small-diameter optical disc following FIG. 30. 6 is a time chart for explaining the operation timing of loading and ejecting a large-diameter optical disc in the optical disc drive apparatus of the present invention.

Explanation of symbols

1 optical disk drive device, 2 small diameter optical disk, 3 large diameter optical disk,
4 loading mechanism, 7 outer casing, 7a freon and panel,
13 spindle motor, 14 turntable,
11 Disc access slot, 12 Skirt, 13 Spindle motor,
14 turntables, 31 sub-rotating rollers, 32 main rotating rollers,
33 Sub non-rotating roller, 34 Main non-rotating roller,
35 Non-rotating roller for extrusion, 36 Non-rotating roller for extrusion,
37 main slider, 38 sub-slider, 46 interlocking mechanism, 49 return spring 51 drive motor, 54 free rotation prevention mechanism, 56 idler,
61 main extrusion arm, 62 sub-extrusion arm, 71 control mechanism,
71A 1st control mechanism, 71B 2nd control mechanism, 72 pinion,
76 Main slide cam, 77 Sub slide cam, 81 Return spring,
84 return spring, 95 first rack, 96 second rack, 102 first cam groove 103 second cam groove, 104 arc-shaped groove, 121 first switch,
122 Second switch, 123 Switch operating cam

Claims (3)

A disk loading means driven forward and reverse by a motor, and a disk pushing means;
When the disc is loaded, when the disc is inserted into the disc loading / unloading slot, the outer periphery of the disc is driven by the disc loading means driven to rotate in the forward direction by the motor, and the disc is moved from the disc loading / unloading slot onto the turntable. Loading and moving the disk pushing means on the outer periphery of the disk to the rear of the turntable;
After the disk is loaded onto the turntable, the disk is lowered onto the turntable and clamped by separating the loading means and the disk pushing means from the outer periphery of the disk,
When the disc is ejected, the loading means and the disc pushing means are pressed against the outer periphery of the disc to push the disc upward from the turntable, and then the disc is driven in reverse by the motor. In a disk drive device for ejecting from the upper position of the turntable to the outside of the disk loading / unloading slot by the means and the disk pushing means,
A control mechanism for moving the disk up and down relative to the turntable by separating and pressing the disk loading means and the disk pushing means with respect to the outer periphery of the disk,
A slider that slides the loading means in a direction substantially perpendicular to the loading and ejecting direction of the disk;
A pinion attached to the lower part of one end of the slider;
One drive motor mounted on the slider for driving the disk loading means and the pinion to rotate in the forward and reverse directions;
A main slide cam disposed on one side of the slider and slid in a direction substantially perpendicular to the sliding direction of the slider;
A sub slide cam mounted on an upper portion of the main slide cam and slid in a direction inclined at a predetermined angle with respect to a slide direction of the main slide cam;
First urging means for urging the main slide cam to slide away from the slider;
A second biasing means for biasing the sub slide cam to an initial position with respect to the main slide cam;
A rack formed on the sub-slide cam along a sliding direction of the sub-slide cam, the rack capable of engaging and releasing the pinion;
A cam groove formed in the main slide cam in a state inclined with respect to the sliding direction of the main slide cam;
Provided to support means of the disk push-out means to control the movement of the rack of the sub slide cam from the non-engagement position of the slider to the pinion against the second biasing means; A disk drive device comprising: a cam driven pin that is inserted into and removed from the cam groove of the main slide cam against the first biasing means. The disk loading means and the disk pushing means are substantially composed of an upper conical roller portion having a smaller diameter as it goes downward, a lower conical roller portion having a larger diameter as it goes downward, and a circular recess disposed in the middle of these. The disk drive device according to claim 1, wherein the disk drive device is configured as a drum roller. Two of the disk loading means are arranged in the loading / ejecting direction of the disk, both of the two disk loading means are mounted on the slider, and the two disk loading means are the one drive motor. Is configured to be driven forward and reverse simultaneously with the pinion by
The rack and the cam groove of the control mechanism are formed in two rows, and the tip portions of the two rows of cam grooves are connected by an arcuate groove. Disk drive device.

Images