JP3978954B2 - Disc recording and / or playback device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a disc recording and / or reproducing apparatus that accommodates and reproduces a plurality of discs.
[0002]
[Prior art]
As a recording and / or reproducing device for a disk mounted on a vehicle for the purpose of reproducing sound, there is a disk player. This disc player has a system in which a disc-shaped recording medium such as a plurality of CDs (compact discs) is stored in a magazine, and a plurality of discs are exchanged at once in a magazine unit. For this reason, since it enlarges, a main-body part is accommodated in a trunk, On the other hand, only the part required for operation is installed in the vehicle interior. However, the disk cannot be replaced while the vehicle is running, and it is necessary to stop and open the trunk, which is troublesome.
[0003]
For this reason, in-vehicle disc players that are housed in the passenger compartment have been developed in recent years. An in-vehicle disc player is required to be capable of accommodating a plurality of discs, and is accommodated in a space defined by an in-dash in a vehicle compartment. Therefore, downsizing the in-vehicle disc player is an important issue.
[0004]
As this in-vehicle disc player, for example, six trays on which six discs are individually placed are stacked in a cartridge having a substantially rectangular parallelepiped shape called a 1DIN size or the like, and the discs are stored. The six discs can be individually inserted and ejected, and one of the six discs can be sequentially selected and reproduced. A conventional in-vehicle disc player moves a disc to be reproduced by moving the cartridge up and down to a predetermined height position, and then forms a space above and below the disc to be reproduced by the space forming means, A turntable and a chuck plate (disc holding means) are introduced into these spaces to chuck the disc to be reproduced on the turntable, and to move the optical pickup from the standby position to the reproduction start position.
[0005]
[Problems to be solved by the invention]
Incidentally, the conventional in-vehicle disc player has the following problems.
[0006]
(1) Since the cartridge side is moved up and down with respect to the optical pickup, the state in which the lowermost disk 203 is reproduced from the state in which the uppermost disk 202 of the cartridge 201 indicated by the solid line in FIG. 35 is reproduced. In order to shift to the position of the cartridge 201, the cartridge 201 has to be raised to the position indicated by the two-dot chain line. For this reason, the height T1 of the cartridge housing space is approximately twice the height T2 of the cartridge 201, It has become an obstacle to making it thinner. H represents the height position of the optical pickup.
[0007]
(2) When the disc to be reproduced has moved to a predetermined height position, the space forming means is moved toward the disc, and spaces are formed above and below the disc to be reproduced. Since the turntable and the chuck plate are introduced to chuck the disk on the turntable and the optical pickup is moved from the standby position to the reproduction start position, it takes a long time to change the disk.
[0008]
The present invention has been made in order to solve the above-mentioned conventional problems, and to provide a disc player that can be thinned and can shorten the disc change time.
[0009]
[Means for Solving the Problems]
The disc recording and / or reproducing apparatus according to the present invention includes a disc storage unit in which a plurality of disc mounting means for placing a disc are movably stacked in a stacking direction via a support unit, and a selected disc A space forming means for forming a space on one side and the other side of the moving direction of the disk mounting means to be mounted; a disk rotating means for mounting and rotating the selected disk; and the disk rotating means A disk holding means for holding the disk in between, and an optical pickup for recording and / or reproducing the disk placed on the disk rotating means,
The space forming means is movably provided in a pickup lifting / lowering means that moves in a disk overlapping direction of the disk storage portion,
The disk rotating means is provided rotatably on an arm means provided rotatably on the pickup lifting / lowering means,
The arm means includes a first arm having the disk rotating means, a second arm having the disk holding means, and the disk holding means by lowering the second arm toward the first arm side. A clamping spring for chucking the disk to the disk, first regulating means for regulating movement of the second arm toward the first arm by the clamping spring, and the second arm by the first regulating means And a second restricting means for canceling the restriction of the movement toward the first arm side.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of a disk recording and / or reproducing apparatus according to the present invention will be described below.
[0011]
In this embodiment, the present invention is applied to a disc player that reproduces sound.
(A) Overall configuration of the structure of the disc player As shown in FIGS. 1 to 11, the disc player is roughly divided into a case 1 that forms an external shape, and a disc that is disposed on the front side in the case 1 and that stores a CD. The storage unit 3 is provided at the insertion / removal port 4 of the front plate 1 a of the case 1, the transfer unit 5 for inserting and ejecting the CD into the disk storage unit 3, and the front side of the transfer unit 5. Open / close means 6 that opens and closes the insertion / removal opening 4 of the front plate 1a and reproduction means that is arranged on the back side of the case 1 and that selects and reproduces one of the CDs in the disc storage unit 3 7, an extrusion means 8 that is provided on the left and right sides of the back side of the disk storage unit 3 and pushes out the CD to be ejected toward the transfer means 5, and outside the left and right side plates 1 b and 1 c of the case 1. Together provided by, and a operation means 9 for operating the disc compartment 3 and the reproducing means 7 and the like.
[0012]
The reproducing means 7 is disposed on both sides of a pickup lifting / lowering base 10 that moves up and down as a pickup lifting / lowering means, and is a space for forming a space above and below a selected CD among a plurality of CDs in the disk storage unit 3. It comprises a forming means 11, a first arm (hereinafter referred to as a lower arm) 13 and a second arm (hereinafter referred to as an upper arm) 12 which are rotatably provided on the pickup lifting / lowering base 10 and enter the space. A sandwiching means 14 for sandwiching the CD selected in the above; a disk drive means 15 for rotating and driving the sandwiched CD while being attached to the lower arm 13; and a pickup provided on the lower arm 13 for reading information from the rotating CD. The unit 16, the insertion / removal mode for inserting / removing the CD, and the reproduction mode for reproducing the CD Only in the reproduction mode, the rotating power supply means 17 for transmitting the driving force of the transfer means 5 to the holding means 14 and turning it, and the regulating means 18 for setting the timing when the holding means 14 holds the CD. It consists of and.
(B) Case First, the case 1 will be described. The case 1 includes a front plate 1a, side plates 1b and 1c, a ceiling plate 1d, and a bottom plate 1e, and the back surface is open. The side plates 1b and 1c and the bottom plate 1e are integrated.
(C) Disk storage section As shown in FIG. 3A, the disk storage section 3 is a disk loading / unloading platform 22 on which six trays 2 and six trays 2 are mounted in this embodiment as disk mounting means. Both ends of four guide columns 23 along the vertical direction are supported as a support means by being coupled to the bottom plate 1e and the ceiling plate 1d on the front side in the case 1.
[0013]
As shown in FIG. 4, the tray 2 is formed by sticking a resin 2b on the upper surfaces of both sides of a thin aluminum plate 2a. A pair of pins 2c and 2d projecting sideways are formed on the middle part and the back side of each resin 2b. The front side is long and the back side is short. The height of the resin 2b is set to be substantially the same as the thickness of the CD, and the front side of the leaf spring 2e as a spring means for sandwiching the CD between the resin 2b and the aluminum plate 2a is fixed to the upper surface of the resin 2b. Has been. A holding portion 2f for pressing the CD is formed on the inner side of the back side of the leaf spring 2e, while a receiving portion 2g that is pressed downward by the lower surface of the split cam 82 described later on the outer side of the rear side, and an upper insertion portion described later. A receiving portion 2h for receiving an upward force is formed by the lower surface of 82j. Guide holes 2i for inserting the guide columns 23 are formed through the resin 2b and the aluminum plate 2a on the front side and the back side of each resin 2b. A cushioning material (not shown) is attached along the circular arc to the portion where the vicinity of the outer peripheral surface of the CD contacts both surfaces of the aluminum plate 2a. Cylindrical shapes for receiving coil springs 24 as urging means provided between the ceiling plate 1d and the uppermost tray 2 at both ends of the resin 2b in the uppermost tray 2 as shown in FIG. The spring receiver 2j is integrally formed. As shown in FIG. 3B, the lower end of the spring receiver 2j slightly protrudes inward to form the receiving portion 2k, and the lower end of the coil spring 24 is received by the receiving portion 2k. It is like that. This is provided in order to prevent the load required for compression from becoming too large even when the compression length is increased by using a long spring.
[0014]
On the other hand, the disk lift 22 is formed in a shape in which the left and right ends are bent upward. A guide hole 22a for inserting the guide column 23 is formed in the horizontal part, and a pair of pins 22b for raising and lowering the disk lifting platform 22 are protruded in the horizontal direction outside the left and right vertical parts. It is fixed. The pair of pins 22 b are inserted through two vertical slits 25 formed in the side plates 1 b and 1 c of the case 1 and project outside the case 1.
[0015]
The disk lifting platform 22 and the six trays 2 are supported so as to be movable up and down by inserting guide columns 23 through the guide holes 22a and 2i. The upper and lower ends of the four spring guides 26 are fixed to the ceiling plate 1d and the bottom plate 1e of the case 1, and each spring guide 26 is inserted into the spring receiver 2j. And the lower end of the coil spring 24 as urging means provided so as to surround the spring guide 26 is in contact with the receiving portion at the lower end of the spring receiver 2j.
(D) Transfer Means As shown in FIG. 2, the transfer means 5 is provided on the front plate 1 a of the case 1. An insertion / removal port 4 is formed in the front plate 1a. A drive shaft 30 and a driven shaft 31 are rotatably supported by the insertion / removal port 4. Both ends of the drive shaft 30 are rotatably attached to the front plate 1a. Both ends of the driven shaft 31 are inserted into a long hole 32 formed in the side surface of the front plate 1a so as to be long in the vertical direction. In order to support the intermediate portion of the drive shaft 30 and the driven shaft 31, the small-diameter portion of the intermediate portion of the drive shaft 30 rotates in the groove 33a on the back side of the resin bearing 33 in which the downward movement is restricted as shown in FIG. On the other hand, the small diameter portion of the intermediate portion of the driven shaft 31 is rotatably fitted to the groove 34a on the back side of the resin bearing 34 that can be raised and lowered via a pair of guide protrusions and a pair of guide grooves (not shown). Yes. A pair of rollers 35 made of resin is attached to the driven shaft 31, and a pair of rollers 36 made of rubber is attached to the drive shaft 30, both of which are restrained from sliding in the axial direction by a retaining ring (not shown). . Circumferential grooves are formed at both ends of the driven shaft 31, and the driven shaft 31 is urged toward the drive shaft 30 by the spring hook pin 37 fixed to the side surface of the front plate 1 a and the circumferential groove portion. Both ends of the spring 38 are engaged.
[0016]
Means for driving the drive shaft 30 will be described. As shown in FIG. 6, a gear 39 is fixed to the right end of the drive shaft 30, and a gear 40, a gear 41, and mutually integrated gears 42 and 43 are rotatably supported inside the right side plate 1c. ing. A worm 44 and a gear 45 meshing with the gear 43 are integrally supported on the bottom plate 1e so as to be rotatable, and a worm 47 fixed to the output shaft of the transfer motor 46 attached to the bottom plate 1e is meshed with the gear 45. Yes.
[0017]
A pushing means 48 is provided as shown in FIGS. 2 and 5 in order to automatically carry out the operation of pushing the CD by several millimeters after the insertion of the CD by the rollers 35 and 36 is completed. Three pairs of long hole-shaped guide holes 49, 50, 51 are formed in the horizontal direction above and below the insertion / removal port 4 in the front plate 1a. A pair of slide bases 52 are provided on the left and right sides of the back surface of the front plate 1a, and the three guide pins 53, 54, 55 fixed to the slide bases 52 cannot be extracted into the guide holes 49, 50, 51. It is inserted. A resin vertical roller 57 is rotatably supported on the back side of each slide table 52 via a vertical shaft 56. In order to urge the pair of slide bases 52 toward each other, a push spring 60 is provided between a spring hook portion 58 formed on the front plate 1 a and a spring hook portion 59 formed on the slide base 52. It has been.
[0018]
The CD at the height position where the vertical roller 57 is arranged is positioned in the horizontal direction by the vertical roller 57. The positioning of the CD below and above the vertical roller 57 is erected on the bottom plate 1e as shown in FIG. The positioning rods 61 and 62 and a pair of positioning rods (not shown) attached so as to be suspended from the ceiling plate 1d (arranged on the extension lines of the positioning rods 61 and 62 and inserted into and removed from the positioning rods 61 and 62). A space through which the CD passes is formed).
(E) Opening / closing means The opening / closing means 6 for opening / closing the insertion / removal port 4 of the front plate 1a will be described. As shown in FIG. 2, a shutter 64 is provided on the front side of the front plate 1a so as to be movable up and down. The shutter 64 has an opening 64a for allowing the CD to pass. When the shutter 64 is raised, the intermediate height position of the opening 64a occupies the boundary position between the rollers 35 and 36 and becomes "open". When is lowered, it becomes “closed”.
[0019]
That is, a pair of guide pins 65 are provided up and down on the left and right of the front plate 1a, while a pair of guide holes 64b that are long in the vertical direction are formed in the shutter 64, and the guide pins 65 inserted through the guide holes 64b. A retaining ring is fitted to the tip of the. The pair of guide pins 54 near the center is more than the other guide pins 53 and 55 so that the distance between the pair of slide bases 52 can be increased only when the shutter 64 is raised and opened. The shutter 64 is formed with an L-shaped guide hole 64c which is set to be long and allows the guide pin 54 to be inserted therethrough. On the upper surface of the guide hole 64c, the interval between the pair of vertical rollers 57 is increased for some reason, and when the CD is forcibly ejected, the shutter 64 is forcibly raised to be “open”. Therefore, a guide rail portion 64d is formed.
[0020]
Next, a link mechanism for opening and closing the shutter 64 will be described. A guide hole 66a that is long in the left-right direction is formed on the front and lower surfaces of the left and right slide plates 66 having a substantially L-shaped cross section, and a guide pin 67 inserted into the guide hole 66a is fixed to the front plate 1a and the bottom plate 1e. ing. Cam holes 64e are formed in the lower portions on both sides of the shutter 64, while slide pins 66b are fixed to both front ends of the left and right slide plates 66, and the slide pins 66b are inserted into the cam holes 64e. As shown in FIG. 17B, spring hooks 66c and 68 projecting downward are formed on the lower surface of the left and right slide plates 66 and the lower surface of the bottom surface 1e, and a return spring 69 is hung between them. A front / rear slide plate 70 is provided on the lower left surface of the bottom plate 1e so as to be slidable in the front / rear direction. That is, a pair of guide holes 70a is formed in the front and rear slide plate 70, and a headed pin (not shown) inserted through the guide hole 70a is fixed to the bottom plate 1e. As shown in FIG. 5, the bent portion of the substantially L-shaped lever 72 is rotatably attached to the lower surface of the bottom plate 1 e via a fixed shaft 73, and elongated holes 72 a and 72 a are formed at the tip of the lever 72. . The pins 66d and 70b fixed to the left and right slide plates 66 and the front and rear slide plates 70 are loosely fitted in the long holes 72a and 72a. The front and rear slide plate 70 is formed with a pressed portion 70c that is pressed by an outer slider 140 described later.
(F) Reproducing means The reproducing means 7 is arranged close to the back of the disc storage portion 3 in order to make the depth dimension of the disc player as small as possible. Since the holding means 14 in the reproducing means 7 is mounted on the pickup lifting / lowering base 10 as shown in FIG. 2, the pickup lifting / lowering base 10 will be described first.
[0021]
The pickup lift 10 is formed by integrally forming a horizontal plate and vertical plates on both sides thereof, and an arc-shaped notch 10a is formed on the front side of the horizontal plate so that a CD can enter. A pair of pins 77 for raising and lowering the pickup elevator 10 is fixed to each vertical plate so as to protrude in the horizontal direction. The pair of pins 77 are arranged at the same height and are shorter than the pair of pins 22b of the disk lifting platform 22. These pins 77 are inserted through a pair of vertical slits 78 formed in the side plates 1 b and 1 c of the case 1 and project outside the case 1.
[0022]
Space forming means (control means)
As shown in FIG. 2, space forming means (control means) for forming a space above and below the selected CD by inserting it between the trays 2 that overlap in the vertical direction inside the vertical plates on both sides of the pickup lift 10. 11), a split cam 82 made of resin is provided so as to be slidable in the front-rear direction. That is, a guide hole 10a is formed in the upper part of the front side of the vertical plate in the pickup lift 10 and a headed guide pin 82a inserted through the guide hole 10a is fixed to the divided cam 82, while FIG. As shown, a guide hole 82b is formed in the lower portion of the split cam 82, and the headed guide pin 10b of FIG. 2 inserted through the guide hole 82b is fixed to an intermediate position in the front-rear direction of the vertical plate.
[0023]
The split cam 82 is inserted toward the tray 2, and the four pins 2c and 2d on both sides of the tray 2 are pushed up to stably support the tray 2 and to space above and below the tray 2 on which the CD to be played is placed. Is formed. The split cam 82 has a shape such that two plates having different lengths in the front-rear direction are formed by forming slits and bonded together. By sliding the split cam 82 to both sides of the tray 2, the front side is The pair of long pins 2c of the tray 2 is moved up, and the rear side is configured to move up the pair of short pins 2d.
[0024]
That is, it is configured as follows. First separation control portions 82c ₁ of the pair, 82c ₁ is formed a selected tray 2 and which from above the tray 2 Place selected CD in order to upward, above the first separation control portions 82c ₁ of the respective Are formed with second separation control portions 82c ₂ and 82c ₂ for moving only the tray 2 above the selected tray 2 upward. Then, the first separation control unit 82c ₁ is provided between the second separation control unit 82c ₂ third separation control unit 82d for holding only the selected tray 2, 82d are formed respectively. An upper surface 82f that holds the positions of the pins 2c and 2d of the tray 2 above the selection tray 2, and a receiving portion 2g of the leaf spring 2e that holds the positions of the pins 2c and 2d of the tray 2 below the selection tray 2 A lower surface 82h as a position control means for pressing down is formed along the moving direction of the divided cam 82.
[0025]
Since the selection tray 2 and the pins 2c and 2d of the tray 2 above the selection tray 2 are pushed up by the advancement of the first and second separation control portions 82c ₁ and 82c ₂ , they are originally constant values such as θ = 45 °, for example. Set to However, here, the tray 2 rises while compressing the coil spring 24, and the higher the position of the tray 2, the greater the amount of compression of the coil spring 24 and the greater the load applied when pushing up the tray 2. In other words, the load is small at the initial stage of compression of the coil spring 24. Therefore, as shown in FIG. 21 (a), the upper part of the first and second separation control units 82c ₁ and 82c ₂ is, for example, θ ₁ = 45 °, while the lower part is, for example, θ ₂ = 60 °, The intermediate part is formed by an arcuate surface.
[0026]
Next, the third separation control units 82d and 82d will be described. The third separation control units 82d and 82d are composed of upper insertion portions 82j and 82j, middle insertion portions 82k and 82k, and lower insertion portions 82m and 82m. The upper insertion portions 82j and 82j are for forming a space above and below the selection tray 2, and the middle insertion portions 82k and 82k lower both the selection tray 2 and the selection CD and place them on the turntable 97 of the lower arm 13. The lower insertion portions 82m and 82m are for lowering only the selected tray 2 again to separate the selected tray 2 from the selected CD.
[0027]
The sandwiching means 14 that sandwiches the selected CD by rotating toward the upper and lower spaces of the selected CD formed by the sandwiching means space forming means 11 will be described. A base end portion of the lower arm 13 and the upper arm 12 is rotatably attached to the left side of the pickup elevator 10. That is, it is as follows. As shown in FIG. 8, the lower arm 13 is fixed to the lower arm 13 in the vicinity of the lower end of the hollow shaft 86. The lower end of the hollow shaft 86 passes through the pickup lifting / lowering base 10 so as to be rotatable. A flat washer 93 and a retaining ring 94 are attached to the shaft. A sleeve 87 made of a copper alloy is penetrated and fixed to the base end portion of the upper arm 12, and the hollow shaft 86 is inserted into the sleeve 87 so that the upper arm 12 is parallel to the lower arm 13. The selected CD is clamped by descending. A flat washer 88 is inserted into the upper end of the hollow shaft 86 and a retaining ring is attached. A clamping spring 89 for biasing the upper arm 12 downward is provided between the flat washer 88 and the sleeve 87. Yes. Further, as shown in FIG. 7, a slide erected on the lower arm 13 so that the lower arm 13 and the upper arm 12 rotate synchronously without rotating relatively around the hollow shaft 86. A moving pin 90 is slidably inserted into a hole 91 formed in the upper arm 12. In order to increase the positioning accuracy of a turntable 97 as a disk rotating means (to be described later) on the lower arm 13 and the CD when the holding means 14 is rotated, the bottom plate 1e is placed in the hollow shaft 86 on the pickup lift 10. A support column 92 is inserted through the column.
[0028]
A disk drive means 15 is provided on the top surface of the tip of the disk drive means lower arm 13. That is, as shown in FIG. 7, a spindle motor 96 is attached, and an output shaft of the spindle motor 96 is attached with a turntable 97 that fits into a central hole of the CD. On the other hand, as shown in FIG. 34, one end of a support plate 98 is fixed near the tip of the upper arm 12, and a circular hole is formed at the other end. A chuck plate 99 serving as a disk holding means formed of resin and having a bowl-shaped convex portion formed along the circle on the lower surface of the disk is rotatably fitted into the hole from above. The chuck plate 99 is prevented from coming off by the other end of a spring plate (not shown) having one end fixed to the lower surface of the upper arm 12.
[0029]
A pickup unit 16 is also mounted on the top surface of the pickup unit lower arm 13 as shown in FIG. The configuration of the pickup unit 16 will be described below. An optical pickup 162 is movably provided along the length direction of the lower arm 13 through a guide rail 161 formed integrally with the lower arm 13. A means for reciprocating the optical pickup 162 along the guide rail 161 is provided. A screw shaft 164 is rotatably supported on the upper surface of the lower arm 13 via a pair of bearing members 163, and a female screw portion (not shown) of the optical pickup 162 is screwed to the screw shaft 164. An output shaft of a scanning motor 165 fixed in the vicinity of the sleeve 87 is interlocked with the screw shaft 164. That is, a gear 168 in which the worm wheel 166 and the screw gear 167 are integrated is rotatably supported, and the output shaft worm 169 meshes with the worm wheel 166, while the screw gear 170 attached to the screw shaft 164 is the screw gear 167. Are engaged.
[0030]
Turning power supply means The structure of turning power supply means 17 for rotating the clamping means 14 with the driving force of the transfer motor 46 will be described below. A gear train 103 is provided inside the left side plate 1b of the case 1 as shown in FIG. That is, the gear train 103 is composed of gears 103a to 103h. On the other hand, a gear 104 is also fixed to the left end of the drive shaft 30. A plate 105 is provided inside the left side plate 1b so as to be movable in the vertical direction. That is, a guide hole 105a that is long in the vertical direction is formed in the upper part of the plate 105, and a guide pin 106 (see FIG. 28) inserted through the guide hole 105a is fixed to the left side plate 1b. Is attached. Spring hanging portions 105b and 107 are formed on the lower portion of the plate 105 and the bottom plate 1e of the case 1, and a return spring 108 for biasing the plate 105 downward is provided therebetween. The plate 105 is formed with an escape hole 105c through which the shaft 109 (fixed to the side plate 1b) of the gear 103h is inserted, and the base end portion of the lever 110 is rotatably attached to the shaft 109. . A moving shaft 111 that penetrates the lever 110 is fixed to the tip of the lever 110, and a gear 112 that meshes with the gear 103h is rotatably attached to the moving shaft 111. A cam hole 105d is formed above the escape hole 105c in the plate 105, and the penetrating end of the moving shaft 111 is inserted into the cam hole 105d. In other words, when the plate 105 is moved up, the cam hole 105d is moved up, and the moving shaft 111 inserted through the cam hole 105d moves to the front side. Therefore, the gear 112 attached to the moving shaft 111 is moved to the drive shaft. 30 gears 104 are also meshed. In order to move the plate 105 upward, an intermediate portion of the lever 113 is rotatably supported inside the left side plate 1 b via a pin 114, and one end of the lever 113 is pivotally supported via a pin 115. Is coupled to the bottom of the. The other end of the lever 113 faces the lower part of the front side of the pair of guide holes 25 of the left side plate 1b through which the pin 22b of the disk lift 22 is inserted. That is, when the disk lift 22 comes to the lowest position and enters the reproduction mode, the pin 22b pushes the other end of the lever 113 downward, and the gear 112 meshes with the gear 104.
[0031]
Next, the uppermost gear 103a of the gear train 103 and the lower arm 13 of the clamping means 14 are interlocked and connected as follows. As shown in FIG. 2, a slide bar 116 is provided that includes a vertical portion that is long in the front-rear direction and a horizontal portion that is integrally formed on the back side of the vertical portion. A pair of guide holes 116a is formed in the vicinity of both ends of the vertical portion of the slide bar 116, and a pair of guide pins 117 inserted into the pair of guide holes 116a as shown in FIG. 5 is fixed inside the left side plate 1b. A retaining ring is attached. In this way, the rack 116b is formed at the lower part on the front side of the slide bar 116 which is slidable in the front-rear direction and meshes with the gear 103a, while the engaging pin 116c protrudes downward at the tip of the horizontal part on the rear side. The upper end of is fixed. As shown in FIG. 7, the engaging pin 116 c is formed integrally with the base end portion of the lower arm 13 and is loosely fitted into a long hole 13 a in a horizontal portion extending to the height of the upper arm 12. As shown in FIG. 9, the long hole 13 a is formed so as to extend along a radial straight line that passes through the axis of the sleeve 87 and is perpendicular to the sleeve 87.
[0032]
The disc player has two operation states, an insertion / removal mode state in which a CD is inserted into and ejected from the disc storage portion 3, and a reproduction mode state in which the CD is played back. 14 occupies the B position as shown in FIG. 30, and the latter occupies the A position as shown in FIG. The clamping means 14 is rotated between the B position and the A position via the rotating power supply means 17 as described above. However, since it is necessary to position the selected CD and the turntable 97 on the lower arm 13 with high accuracy, the positioning means 118 shown in FIG. 10 is provided.
[0033]
The structure of the positioning means 118 will be described below. As shown in FIGS. 9 and 10, the upper end of a positioning pin 119 protruding downward is fixed to the vicinity of the hollow shaft 86 in the lower arm 13. On the other hand, a circular arc hole 10c is formed in the pickup lifting / lowering table 10 corresponding to the range in which the positioning pin 119 moves when the clamping means 14 rotates, and the positioning pin 119 is loosely fitted in the circular arc hole 10c. A spring hooking portion 10 d is formed on the pickup lift 10 so as to protrude downward, and both ends of the toggle spring 120 are hung between the spring hooking portion 10 d and the positioning pin 119. Assuming that the position occupied by the positioning pin 119 when the clamping means 14 occupies the B and A positions is the b and a positions, the c position, which is the intermediate point between b and a, is the inflection point where the direction of movement of the positioning pin 119 changes. The spring hooking portion 10d is disposed at a position corresponding to the c position.
[0034]
Restricting means The upper arm 12 of the clamping means 14 is urged downward by the clamping spring 89, and the regulating means for setting the time when the upper arm is lowered by the urging force of the clamping spring 89 as shown in FIG. 18 is provided. That is, it is configured as follows.
[0035]
A cylindrical plate 124 is erected on the upper surface of the pickup lift 10 between the clamping means 14 and the separation cam 82. The cylindrical plate 124 forms a partial cylinder which is a part of a cylinder centering on the sleeve 87. As shown in FIGS. 32 and 33, the cylindrical plate 124 has a horizontal portion 125a which is long in the circumferential direction and is long in the axial direction. An L-shaped guide hole 125 formed with the vertical portion 125b is formed. On the other hand, a guide pin 12 a that protrudes outward in the radial direction around the sleeve 87 is fixed to the base end portion of the upper arm 12, and the guide pin 12 a is inserted into the guide hole 125. For this reason, since the guide pin 12a is positioned at the horizontal portion 125a of the guide hole 125 from when the holding means 14 occupies the B position of the standby position in FIG. Even if the urging force of the spring 89 is applied, the upper arm 12 does not descend and the clamping means 14 is kept open. On the other hand, when the clamping means 14 is in the A position, the guide pin 12a is positioned at the vertical portion 125b. Therefore, the upper arm 12 is lowered by the urging force of the clamping spring 89, and the guide pin 12a is also lowered to the lower end of the vertical portion 125b.
[0036]
Even if the clamping means 14 is rotated to the position A in FIG. 7 and the guide pin 12a is rotated to the vertical portion 125b of the guide hole 125, the clamping means 14 does not immediately perform the clamping operation, and the clamping operation is not performed until a command is given. In order to do so, the first restricting means for temporarily restricting the downward movement of the guide pin 12a, and after the restriction, the separation cam 82 moves forward, the selected CD and the selected tray 2 descend, and the top of the turntable 97 The second restricting means for releasing the restriction and sandwiching the selected CD when it is placed on is provided. That is, it is configured as follows. As shown in FIGS. 7 and 30, a bearing plate 126 is erected in parallel with the separation cam 82 on the upper surface of the pickup lift 10 and between the cylindrical plate 124 and the separation cam 82. As shown in FIG. 7, an intermediate portion of the restraining lever 127 is supported on the inner side of the bearing plate 126 through a pivot shaft 129, and a pin 127 a that protrudes outward from the front side of the restraining lever 127. Is fixed, and the back side is bent inward to face the vertical portion 125b of the guide hole 125. As shown in FIG. 30, a spring 128 is provided to urge the back side of the restraining lever 127 downward. On the other hand, the pin 127a on the front surface side of the restraining lever 127 is loosely fitted in a cam groove 82r formed in the lower part inside the separation cam 82 as shown in FIG. An escape portion is formed in the upper portion on the back side of the cam groove 82r. When the separation cam 82 moves to the front side and the pins 2c and 2d of the selection tray 2 enter the intermediate insertion portions 82k and 82k, the pin 127a is provided. Is set so that the restraining lever 127 is rotated by the spring 128 and the upper arm 12 is lowered by the urging force of the holding spring 89.
(G) Extrusion means The extrusion means 8 are provided on the left and right inside the case 1. Since these are substantially the same structure, only one will be described. As shown in FIGS. 1 and 19, an extrusion lever 132 for pushing out a CD by rotating is attached to a fixed shaft 133 that protrudes downward from the ceiling plate 1 d of the case 1. The height of the extrusion lever 132 is set to be the same as the height between the rollers 35 and 36. Then, both ends of a return spring 134 provided so as to surround the fixed shaft 133 are hung on a spring hook portion 132a formed on the push lever 132 and a spring hook portion formed on the ceiling plate 1d. On the other hand, the push lever 132 is configured to rotate by moving to the back side, which is the opposite direction to the action of forming the space by moving to the front side of the separation cam 82 described so far. That is, it is as follows. As shown in FIG. 7, a plate 135 is provided outside the bearing plate 126 so as to be slidable by a predetermined amount in the front-rear direction. That is, a pair of guide holes 126 a are formed in the bearing plate 126, while the guide pins 135 a inserted through the respective guide holes 126 a are fixed to the plate 135. The front side end of the plate 135 is bent inward so as to be able to engage with the pressed portion 132 b integrated with the push lever 132, and the back side end is bent outward toward the back of the separation cam 82. It protrudes.
(H) Operating means Finally, the operating means 9 will be described. In the insertion / removal mode, the operation means 9 raises / lowers the disk lift 22 to enable insertion / removal of the CD on the tray 2 of each stage, and further opens the opening / closing means 6 or operates the pushing means 8. In the reproduction mode, the picking platform 10 is moved up and down with the disc platform 22 held at the lowest position to select the selected CD, and the space forming unit 11 is operated and the regulating unit 18 is operated. Let
[0037]
2 and 11, an inner slider 139 and an outer slider 140 are provided outside the left and right side plates 1b and 1c of the case 1 so as to be slidable in the front-rear direction. Since it is bilaterally symmetrical, one side will be described. Guide holes 139a and 140a are formed above and below the inner and outer sliders 139 and 140, and guide pins 158 and 159 fixed to the side plate are inserted into both the guide holes 139a and 140a. A retaining ring is attached. On the back side of the inner slider 139, a pair of staircase slits 141 for raising and lowering the pair of pins 77 of the pickup lifting platform 10 protruding from the vertical slit 78 in six stages is formed. On the front side of the inner slider 139, a pair of staircase slits 142 for raising and lowering the pair of pins 22b of the disk lifting platform 22 protruding from the vertical slits 25 in six stages is formed and below each staircase slit 142 In the reproduction mode, a floor slit 143 is formed continuously for holding the disk lift 22 at the lowest position and lifting only the pickup lift 10. On the other hand, the outer slider 140 is formed with only slits into which the pair of pins 22b of the disk lifting platform 22 which are long pins enter. That is, a pair of quadrilateral insertion / removal mode slits 144 for moving the pair of pins 22b in the staircase slit 142 to move up and down, and a horizontal line shape for entering the floor surface slit 143 and holding it at the lowest position. The pair of playback mode slits 145 and the pair of step slits 142 and the floor surface slit 143 are moved by moving the pin 22b up or down by the taper surfaces 146a and 146b by sliding the outer slider 140 in either direction. A switching slit 146 inclined at 45 ° is formed in communication with each other so as to exchange the positions of the pair of pins 22b. If the vertical positions of the reproduction mode slits 145 are the same, the slits overlap and communicate with each other. Therefore, the reproduction mode slit 145, the insertion / removal mode slit 144, the floor surface slit 143, and the staircase slit 142 The heights of the pins 22b inserted into these are different from each other.
[0038]
The upper part on the back side of the outer slider 140 is bent at a right angle toward the inside to form a protrusion 140b. A relief notch 139b and a relief slit 147 are formed on the back side of the inner slider 139 and the side plate 1b so that the protrusion 140b can move together with the outer slider 140. In order to allow the separation cam 82 to slide integrally with the outer slider 140 regardless of the height position of the separation cam 82 that moves up and down together with the pickup lift 10, the outer surface on the back side of the separation cam 82 as shown in FIG. An engaging groove 82s is formed along the vertical direction, and a protrusion 140b is slidably fitted into the engaging groove 82s. Further, an engaging portion 140c is formed on the front surface side of the left outer slider 140 by bending downward from the bottom plate 1e of the case 1. The engaging portion 140 c presses the pressed portion 70 c to the back side when the outer slider 140 slides to the back side, and opens the shutter 64 regardless of the urging force of the return spring 69.
[0039]
Next, a drive mechanism for simultaneously sliding the right and left sliders of the inner slider 139 and the outer slider 140 will be described. As shown in FIGS. 2 and 6, two connecting shafts 148 and 149 are rotatably supported via two pairs of bearings below the bottom plate 1e of the case 1 and on the back side. Pinions 150 and 151 are fixed to both ends of the respective connecting shafts 148 and 149, and these pinions 150 and 151 mesh with racks 139 c and 140 d formed at the lower part on the back side of the inner slider 139 and the outer slider 140. . Gears 152 and 153 are fixed to the connecting shafts 148 and 149, and operation motors 154 and 155 are individually linked and connected to the gears 152 and 153. That is, it is as follows. Operating motors 155 and 154 are attached to the upper and lower positions inside the bearing plate 126 arranged on the right side of the back side in the case 1, and the output shafts of these motors 155 and 154 are provided inside the bearing plate 126. In addition, the gears 152 and 153 are linked to each other via two sets of speed reduction means 156 and 157.
[0040]
Next, the operation of such a disc player will be described.
[0041]
(I) Overall configuration of the operation The operation of the disc player is to insert a CD into the disc storage unit 3, to discharge the CD from the disc storage unit 3, and to select one of a plurality of CDs stocked in the disc storage unit 3. This is composed of three actions, namely, CD playback to select and play back.
[0042]
(J) Inserting a CD When inserting a CD into the disc storage unit 3, a number assigned to the tray 2 (numbered 1 to 6 from top to bottom) is selected and not shown. After pressing a number button “2”, for example, an insert button (not shown) is pressed. The rotation of the output shaft of the operation motor 154 is transmitted to the speed reduction means 156 and the connecting shaft 148 and the pair of inner sliders 139 slides, and the rotation of the output shaft of the operation motor 155 is transmitted to the speed reduction means 157 and the connection shaft 149. The movement of the outer slider 140 is independently performed. When the pair of pins 22b enters the pair of insertion / removal mode slits 144 of the outer slider 140 and the button is pressed when the pair of pins 22b are at the mode switching position in the insertion / removal mode as shown in FIG. As the inner slider 139 moves backward, as shown in FIG. 13A, the pair of pins 22b rises from the bottom of the step slit 142 to the second, and the disk lift 22 also rises and the second tray from the top. 2 is set to the height of the push lever 132. At this time, the pickup lift 10 is also raised at the same time, but this is an unnecessary movement. If the inner slider 139 is further retracted, the pickup lift 10 is lifted together with the pins 22b, and the third to sixth trays 2 are sequentially raised to the height of the push lever 132.
[0043]
Next, when the outer slider 140 is retracted from the standby position in FIG. 13A until the pin 22b comes to the intermediate position in the front-rear direction of the insertion / removal mode slit 144, the engaging portion 140c of the outer slider 140 is moved to the bottom plate 1e. In order to press the pressed portion 70c shown in FIG. 2 to the back side, the movement of the front / rear slide plate 70 is transmitted to the left / right slide plate 66 via the lever 72 and resists the biasing force of the return spring 69. 66 moves to the left, the shutter 64 rises, and the insertion / removal port 4 is opened as shown in FIG.
[0044]
The shutter 64 is opened by the above operation, and the second tray 2 from the top is already at the same height as the push lever 132 as described above. Therefore, the upper and lower rollers 35, 36 are moved as shown in FIG. When an attempt is made to insert the CD 171 between them, a sensor (not shown) arranged at the front center of the shutter 64 detects the CD 171 and the transfer motor 46 starts to rotate. Since the rotational force of the transfer motor 46 is transmitted to the roller 36 via a gear, the CD 171 is caught between the roller 35 and the roller 35 biased by the spring 38 as shown in FIG. The CD is inserted on the second tray 2 from the top by the rotation, but the CD 171 is inserted only to the state where it is separated from the rollers 35 and 36, so the remaining several mm is urged toward the center by the push spring 60. Are pushed by a pair of vertical rollers 57. The CD 171 is held on the tray 2 by the pressing portions 2f of the pair of leaf springs 2e on the tray 2. When the CD 171 is separated from the rollers 35 and 36, a limit switch (not shown) is operated to stop the rotation of the transfer motor 46, and at the same time, the outer slider 140 moves forward and returns to the standby position in FIG. The pressed portion 70 c that has been pressed toward the front is released, and the shutter 64 is closed by the action of the return spring 69.
[0045]
Even when the pair of pins 22b occupy other height positions (first to third from the bottom) of the staircase slit 142, the CD can be inserted by the same operation as described above.
[0046]
(K) Ejecting the CD When ejecting the CD from the disc storage unit 2, for example, the number button “2” and the eject button are pressed. Then, as in the insertion, for example, the pin 22b moves from the switching position in the insertion / removal mode in FIG. 12 to the standby position in FIG. 13 (a), and the CD on the second tray 2 from the top reaches the height of the push lever 132. Is set. Similarly to the above, when the outer slider 140 moves backward until the pin 22b comes to the position of FIG. 13B, the shutter 64 opens. The operation so far is exactly the same as when a CD is inserted.
[0047]
Next, as shown in FIG. 14, when the outer slider 140 is further retracted until the pin 22b comes to the front side of the insertion mode slit 144, the rear side of the outer slider 140 is projected through the protruding portion 140b as shown in FIG. The separation cam 82 interlocked with the outer slider 140 moves backward, and the rear surface of the separation cam 82 pushes the rear side of the plate 135 to move backward. Then, the front side of the plate 135 pushes the pressed portion 132b of the push lever 132 to the back side, and the push lever 132 rotates to push both sides of the second CD 171 from the top. At the same time when the eject button is pressed, the transfer motor 46 is rotated and the rollers 35 and 36 are already rotating. Therefore, the extruded CD 171 is sandwiched between the rollers 35 and 36 as shown in FIG. In order to prevent the CD 171 from falling due to the ejection, a limit switch (not shown) detects this when a part of the back side of the CD 171 is sandwiched between the rollers 35 and 36, and the rotation of the transfer motor 46 stops. . Thereafter, the CD 171 is manually extracted from between the pair of rollers 35 and 36. When a sensor (not shown) detects that the CD 171 has been removed, the outer slider 140 moves forward, and the pin 22b returns from the position shown in FIG. 14 to the standby position shown in FIG.
[0048]
Then, the rearward force applied to the plate 135 from the separation cam 82 is removed, so that the push lever 132 is rotated by the urging force of the return spring 134 to return to the original position shown by the solid line in FIG. Then, the shutter 64 is closed in the same manner as after the CD is inserted.
[0049]
Even when the pair of pins 22b occupy other height positions (first, third to sixth from the bottom) of the step slit 142, the CD can be ejected by the same operation as described above.
[0050]
(L) Playing a CD In order to play a CD, a number button labeled with the selected CD number, for example, a “2” button and a play button are pressed. Then, as the inner slider 139 moves forward from the state of FIG. 13A, the pin 22b descends to the lowest position of the insertion / removal mode slit 144 as shown in FIG. The outer slider 140 moves forward. Then, when the upper taper surface 146b (see FIG. 11C) of the switching slit 146 is pressed, the pin 22b descends and moves to the floor surface slit 143 of the inner slider 139, and at the same time, the pin 22b moves to the outer slider 140. Is moved into the reproduction mode slit 145 to switch to the reproduction mode as shown in FIG. At the time of this switching, the pair of pins 77 of the pickup lifting / lowering base 10 remains at the lowest position of the staircase slit 141. The position of the pin 22b at this time is a switching position to the insertion / removal mode in the reproduction mode, and when the outer slider 140 is retracted from this state, the lower taper surface 146a of the switching slit 146 is pressed to raise the pin 22b. As shown in FIG. 12, the mode can be returned to the mode switching position in the insertion / removal mode.
[0051]
The position of the pin 22b shown in FIG. 15A with respect to the outer slider 140 is not only a mode switching position, but also a CD selection position for selecting a CD to be reproduced by changing only the height of the pickup lift 10. That is, if only the inner slider 139 is retracted from the position shown in FIG. 15A, the pair of pins 22b appear to move relatively forward in the floor surface slit 143, and actually the bottom of the vertical slit 25. The disk lift 22 is not moved from the lowest reproduction position because it is held in the position, but the other pair of pins 77 are hidden by the outer slider 140 but cannot be seen, but relatively rise along the step slit 141. It looks like this and actually rises stepwise in the vertical slit 78. That is, when the pair of pins 22b is positioned at the positions of numbers 1-6 assigned to the position of the floor slit 143 by retreating the inner slider 139, the pair of pins 77 is assigned the numbers 1 to 2 attached in the vertical direction. Ascending and descending to a height of 6, the CD with that number can be played. FIG. 15A shows a state in which the 6th CD can be reproduced, and FIG. 15B shows a state in which the 1st CD can be reproduced.
[0052]
Here, since the second CD is selected as described above, the pair of pins 77 ascend to the second position from the top as shown in FIG. With the above operation, the CD to be reproduced is ready to be reproduced, and the subsequent operations are the same regardless of the number of CDs selected, and operate by the movement of the outer slider 140 and the driving of the transfer motor 46.
[0053]
The operation after the standby state in FIG. 16A in which the second CD to be reproduced is selected will be described below. When the pin 22b occupies the D position on the outer slider 140 of FIG. 16B, that is, the state of FIG. 16A is a standby state, and at this time, the separation cam 82 is at the position of FIG. When the pin 22b comes to the E position as the first step, the separation cam 82 moves forward and the pins 2d of the tray 2 in the second and third steps from the top as shown in FIG. The lower end of the rear side of the separation cam 82 enters between the pins (the lower end of the front side also enters the pin 2c, and the same action as the pin 2d is performed hereinafter), and the pin 2d of the tray 2 at the second stage from the top is The first separation control portion 82c ₁ is slid to be placed on the upper insertion portion 82j, and the upper end of the separation cam 82 enters between the pins 2d of the tray 2 of the first and second trays from the top. In the third stage, the pin 22b is in the G position as shown in FIG. Come in, the pin 2d of the tray 2 of the first row from the top rests on the upper surface 82f of the separating cam 82 to slide the second separation control unit 82c _2. For this reason, when the pin 22b comes to the G position in the third stage, a space is formed above and below the second selection tray 2 from the top as shown in FIG.
[0054]
When the sensor (not shown) detects that the pin 22b has reached the G position in FIG. 16B, the transfer motor 46 starts to rotate. Since the pair of pins 22b enter the floor surface slit 143 and push the lever 113 of the rotating power supply means 17 downward when the mode is switched to the reproduction mode as described above, FIG. From this state, the lever 113 rotates counterclockwise about the pin 114, the plate 105 rises, and the lever 110 rotates clockwise about the shaft 109. As shown in FIG. Is already in mesh with the gear 104 while meshing with the gear 103h. Accordingly, the rotation of the transfer motor 46 is transmitted to the slide bar 116 having the rack 116b through the drive shaft 30 and the gear train 103, and the slide bar 116 moves backward as shown in FIG. Then, since the engaging pin 116c on the lower back side of the slide bar 116 is loosely fitted in the long hole 13a, the clamping means 14 rotates toward the front side, and the positioning pin 119 in FIG. When the point c is exceeded, the biasing force of the toggle spring 120 acts in the opposite direction, and the positioning pin 119 rotates to the position a as shown in FIG. 10B, and the selected CD2 as shown in FIG. The chuck plate 99 and the turntable 97 enter the upper and lower sides of the upper and lower arms 12 and 13 together. When this is shown in a plan view, the state shown in FIG. 30 is changed to the state shown in FIG. The rotation of the transfer motor 46 is stopped by a limit switch (not shown) that detects the rotation of the clamping means 14.
[0055]
As the fourth stage, when the outer slider 140 moves forward until the pin 22d reaches the position H in FIG. 16B, the pin 2d of the selection tray 2 descends into the middle insertion portion 82k. And the selected CD is placed on the turntable 97 as shown in FIG. At the same time, when the separation cam 82 moves forward together with the outer slider 140, the regulating means 18 operates, and the upper arm 12 of the clamping means 14 moves downward by the action of the clamping spring 89, and the selected CD is turned on the turntable. 97 and the chuck plate 99. That is, the operation of clamping is described in detail as follows. When the pin 22b is at the position G and the holding means 14 occupies the standby position B, the guide pin 12a is located at the horizontal portion 125a of the guide hole 125 and the holding means 14 occupies the reproduction position A as shown in FIG. As shown in FIGS. 21B and 33A, the guide pin 12a moves to the vertical portion 125b of the guide hole 125, but the pin 127a cannot escape to the relief portion of the cam groove 82r of the separation cam 82. On the other hand, the guide pin 12a is blocked by the back side of the restraining lever 127 and cannot be lowered. Next, when the pin 22b moves to the H position, the separation cam 82 also moves forward, so that the pin 127a can escape to the relief portion of the cam groove 82r as shown in FIGS. 21 (b) and 33 (b). Thus, the pin 127a of the restraining lever 127 biased by the spring 128 moves upward toward the relief portion of the cam groove 82r of the separating cam 82, and the back side of the restraining lever 128 is lowered. For this reason, as shown in FIG. 34, the upper arm 12 that has been urged by the clamping spring 89 descends, and the selection CD 171 is clamped as described above.
[0056]
By inserting the support column 92 erected on the bottom plate 1 e through the hollow shaft 86 that is the rotation center of the gripping means 14, the rotation center of the clamping means 14 is positioned with high accuracy on the bottom plate 1 e and positioned by the toggle spring 120. Since the pin 119 is held in a state where it is pressed against the pickup lifting / lowering base 10, the turntable 97 and the chuck plate 99 are positioned with high accuracy on the path in the circumferential direction. On the other hand, since the guide column 23 for guiding the tray 2 on which the CD 171 is placed is also erected on the bottom plate 1e like the column 92, the CD 171 is also positioned on the bottom plate 1e with high accuracy. Therefore, the center of the CD to be reproduced, the center of the turntable 97, and the center of the chuck plate 99 coincide with each other with high accuracy, and the CD 171 is securely held.
[0057]
As the final fifth stage, when the outer slider 140 moves forward until the pin 22b reaches the I position in FIG. 16B, the pin 2d of the selection tray 2 is lowered to the lower insertion portion 82m as shown in FIG. The selection tray 2 that has been in contact with the selected CD 171 is lowered as shown in FIG. 26 and separated from the selected CD 171. At the same time, the receiving portion 2h of the leaf spring 2e holding the selected CD 171 is separated as shown in FIG. The selected CD 171 is released by being pushed up by the lower surface of the upper insertion portion 82j on the rear surface side of 82. At this time, the tray 2 below the selection tray 2 is pressed by the lower surface 82h of the separation cam 82, and the tray 2 above the selection tray 2 is urged downward by the coil spring 24. This prevents the tray 2 from vibrating.
[0058]
After the selected CD is sandwiched between the sandwiching means 14 as described above, the CD is played with the sandwiching means 14 held at the A position as shown in FIG. First, when the spindle motor 96 rotates, the CD rotates via the turntable 97. Next, when the scanning motor 165 of the pickup unit 16 rotates, the rotation is transmitted to the screw shaft 164, and the optical pickup 162 moves along the screw shaft 164 from the inner side to the outer side in the radial direction of the CD. Done.
[0059]
After the CD is reproduced, when the screw shaft 164 rotates reversely and the optical pickup 162 returns to the original position, the scanning motor 165 stops rotating and the spindle motor 96 also stops rotating. Thereafter, the outer slider 140 is retracted and the separation cam 82 is also retracted in the reverse procedure. When the pin 127a returns from the H position to the G position as shown in FIG. 21 (b), the pin 127a of the restraining lever 127 at the position shown in FIG. 33 (b) is separated as shown in FIG. 33 (a). And the lower side of the restraining lever 127 is raised. For this reason, the guide pin 12a which protrudes outward from the clamping means 14 is pushed up along the vertical part 125b of the guide hole 125, and the clamping means 14 can be rotated. Thereafter, a sensor (not shown) detects that the guide pin 12a has moved upward, the transfer motor 46 rotates in the opposite direction, and the clamping means 14 rotates to the back side. When the positioning pin 119 occupying the position b in FIG. 10B exceeds the position c, which is the inflection point, the urging force of the toggle spring 120 acts in the opposite direction, and positioning is performed as shown in FIG. The pin 119 rotates to the b position, and the clamping means 14 returns to the B position which is the standby position. The rotation of the transfer motor 46 is stopped by a limit switch (not shown) that detects the rotation of the clamping means 14. Even if the clamping means 14 is located at the standby position B, it is urged to the back side by the toggle spring 120, so that it is not affected by the vibrations of both vehicles. Thereafter, when the outer slider 140 moves backward and the pin 22b returns to the standby position D in FIG. 16B, the separation cam 82 also moves backward, and all of the first to third trays 2 are lowered, and the six sheets Returning to the state of FIG. 22 in which the tray 2 is not separated.
[0060]
When playing a CD other than the second CD from the top, the inner slider 139 is moved forward or backward from the state of FIG. 16A, and 1, 3, 4, 5, attached to the inner slider 139 in the drawing. After the pin 22b is relatively moved to any one of the positions 6, the outer slider 140 is slid so that the positions D to I on the outer slider 140 in FIG. The same operation as described above can be repeated.
[0061]
In this embodiment, the disk recording and / or reproducing apparatus is applied to a disk player for reproducing audio. However, the apparatus for recording audio, the apparatus for recording and reproducing, or the audio is used. The present invention is not limited to this and may be applied to an apparatus for recording and / or reproducing video. Further, although the case where the direction in which the trays overlap is shown as the vertical direction, the direction in which the trays overlap can be set to the horizontal direction. Furthermore, although the disk having a size of 12 cm is used, it can also be applied to other sizes such as 8 cm.
[0062]
Furthermore, in the present embodiment, the number of trays constituting the disk storage unit is six, but it may be five or less or seven or more. Further, in the present embodiment, the tray shown in FIGS. 3 and 4 is used as the disk mounting means, but the portion indicated by the two-dot chain line in the figure is cut and the outer peripheral portion of the CD of the aluminum plate 2a is placed. A pair of mounting pieces in which only the both end portions are removed and the central portion is removed may be used.
[0063]
【The invention's effect】
The disk recording and / or reproducing apparatus of the present invention has the following effects.
[0064]
(1) Since the present invention moves the optical pickup side up and down with respect to the disc storage portion, the apparatus can be made thinner than a conventional optical pickup that moves the disc storage portion side up and down. . Further, since the optical pickup and the space forming means are simultaneously moved up and down by the pickup raising / lowering means, the structure can be simplified and the disk change time can be shortened.
[0065]
According to the present invention, after the pickup lifting / lowering means is moved up and down to the position of the selected disk, the space forming means is slid to form a space above and below the selected disk, and the arm means is rotated. By a series of operations, the disk rotating means can be moved to the position of the selected disk.
[0066]
In the present invention, the disk rotating means and the disk holding means are moved to the center of the selected disk by the first arm and the second arm of the arm means, and then the disk holding means is moved to select the selected disk. Can be held (chucked) by the disk rotating means.
[0067]
In the present invention, the disc holding means can reliably hold and release the disc by the regulating means provided on the arm means.
[0068]
In the present invention, if the optical pickup is moved in advance to the disk rotating means side at the tip of the first arm and the first arm is rotated, the pickup is moved simultaneously with the disk rotating means moving to the disk mounting position. The disk change time can be further shortened by moving to the recording / reproducing start position.
[Brief description of the drawings]
FIG. 1 is an external perspective view of a disc player showing an embodiment of a disc playback apparatus according to the present invention.
FIG. 2 is an exploded perspective view of a disc player.
FIG. 3A is an exploded perspective view of a disc housing portion in the disc player, and FIG.
4A and 4B relate to a disc housing portion in the disc player, wherein FIG. 4A is a plan view and FIG. 4B is a front view.
FIG. 5 is a perspective view of the inside of the front side of the case as viewed from the back side.
FIG. 6 is an exploded perspective view of a transfer unit, a rotating power supply unit, and the like.
FIG. 7 is a perspective view of reproducing means.
FIG. 8 is a cross-sectional view of the main part of the clamping means.
FIG. 9 is a plan view of the pickup unit.
10A and 10B are related to the positioning means, and FIG. 10A is a rear view when the clamping means is positioned at the standby position, and FIG. 10B is a rear view when the holding means is positioned at the reproduction position.
11A is a front view of a pickup lifting platform and a tray lifting platform, FIG. 11B is a front view of an inner slider, and FIG. 11C is a front view of an outer slider;
FIG. 12 is a diagram for explaining the operation of the operating means in the insertion / removal mode for inserting and ejecting the disc and indicating the mode switching position.
FIGS. 13A and 13B are diagrams for explaining the operation of the operating means in the standby state in which the second disk is selected, and FIG. 13B is a diagram illustrating the state in which the shutter is opened. Action | operation explanatory drawing of an operation means.
FIG. 14 is a diagram for explaining the operation of the operating means in a state in which the push-out lever is rotated when the second disc from the top is ejected.
FIGS. 15A and 15B are diagrams for explaining the operation of the operation means when reproducing the sixth disc from the top, and FIG. 15B shows the first disc from the top in the reproduction mode state for reproducing the disc. Action | operation explanatory drawing of the operation means in the case of reproducing | regenerating.
FIGS. 16A and 16B are diagrams for explaining the operation of the operating means when the pin is in the standby state at the D position, and FIG. 16B is the playback state when the pin is in the I position. Explanatory drawing of an action | operation means when it exists in.
17A and 17B relate to a disc player when a disc is inserted, in which FIG. 17A is a plan view and FIG. 17B is a front view.
FIG. 18 is a side sectional view of the disc player when the disc is inserted.
FIGS. 19A and 19B relate to the pushing means when the disc is ejected, and FIG. 19A is a plan view and FIG. 19B is a front view.
FIG. 20 is a side sectional view of the pushing means when the disc is ejected.
FIGS. 21A and 21B are action explanatory views showing the relation with the movement of the tray, and FIG. 21B is an action explanatory view showing the relation with the pin.
FIG. 22 is a side view showing a state before the separation cam starts separating the tray.
FIG. 23 is a side view showing a state in which two trays are separated by a separation cam.
FIG. 24 is a side view showing a state where three trays are separated by a separation cam.
FIG. 25 is a side view showing a state where only the reproduction tray is lowered after the tray is separated into three and the reproduction disc is placed on the turntable and is nipped by the nipping means.
FIG. 26 is a side view showing a state in which only the reproduction tray is lowered again and separated from the reproduction disk after the reproduction disk is clamped by the clamping means.
FIG. 27 is an explanatory diagram showing a state in which the playback disc is released by raising the leaf spring of the playback tray during playback.
FIGS. 28A and 28B are diagrams for explaining the operation in a state where the rotational power is not supplied, and FIG. 28B is a diagram for explaining the operation in a state where the rotational power is supplied.
FIG. 29 is an operation explanatory view showing a state in which rotational force is supplied to the clamping means.
FIG. 30 is an operation explanatory view showing a state in which the clamping means occupies the standby position.
FIG. 31 is an operation explanatory view showing a state in which the holding means occupies the reproduction position.
FIG. 32 is an operation explanatory view showing the state of the clamping time setting means when the clamping means occupies the standby position.
FIGS. 33A and 33B relate to the clamping time setting unit when the clamping unit occupies the reproduction position, and FIG. 33A is an operation explanatory diagram showing a state in which the clamping is blocked, and FIG. 33B is an operational description showing a state in which the blocking is released. Figure.
FIG. 34 is an operation explanatory view showing a state in which the holding means holds the disc by releasing the blocking by the holding time setting means.
FIG. 35 is an explanatory view showing a problem of a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 2 ... Tray, 3 ... Disc accommodating part, 10 ... Pickup raising / lowering base (pickup raising / lowering means), 11 ... Space formation means, 12, 13 ... Lever, 97 ... Turntable (disk rotating means), 162 ... Optical pick-up.

Claims (5)

A disk storage unit in which a plurality of disk mounting means for mounting a disk is movably stacked in a stacking direction via a support means;
Space forming means for forming a space on one side and the other side of the moving direction of the disk mounting means on which the selected disk is mounted;
Disk rotating means for placing and rotating the selected disk; and disk holding means for holding the disk between the disk rotating means;
An optical pickup for recording and / or reproducing a disk placed on the disk rotating means,
The space forming means is movably provided in a pickup lifting / lowering means that moves in a disk overlapping direction of the disk storage portion,
The disk rotating means is provided rotatably on a clamping means provided rotatably on the pickup lifting / lowering means,
The clamping means includes a first arm provided with the disk rotating means, a second arm provided with the disk holding means, and the disk holding means by lowering the second arm toward the first arm side. A clamping spring for chucking the disk to the disk, first regulating means for regulating movement of the second arm toward the first arm by the clamping spring, and the second arm by the first regulating means And a second restricting means for releasing the restriction of the movement toward the first arm . The first restricting means includes a guide pin provided at a proximal end portion of the first arm so as to protrude in a radial direction around the rotation axis of the first arm, and the clamping spring by inserting the guide pin. A cylinder provided with an L-shaped guide hole comprising a horizontal portion for preventing the second arm from descending toward the first arm against the spring force of the first portion and a vertical portion connected to one end of the horizontal portion 2. The disc recording and / or reproducing apparatus according to claim 1 , further comprising a plate and a restraining lever that opens and closes an upper end portion of the vertical portion . The restraint lever is rotatably attached to the bearing plate by a pivot shaft, is provided with a rotational force by a spring, and closes the upper end of the vertical portion of the guide hole on one end side. 2. The disk recording and / or reproducing apparatus according to 2. The second restricting means includes a pin provided on a side surface on the other end side of the restraining lever, and a cam groove into which the pin is inserted,
The cam groove keeps the restraining lever closed with the upper end of the vertical portion closed by pressing the pin against the cam groove bottom surface with the spring, and has a relief portion at one end in the length direction of the cam groove. 2. The disk recording according to claim 1, wherein when the pin moves to the position of the escape portion, the upper end portion of the vertical portion is opened by rotating the restraining lever by the spring. And / or playback device. The disk recording and / or reproducing apparatus according to claim 4 , wherein the cam groove is provided in a separation cam constituting the space forming means.

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