JP3975624B2 - Disc recording and / or playback device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a disk recording and / or reproducing apparatus for storing and reproducing a plurality of disks.
[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 method of storing a plurality of CDs (compact discs) in a magazine and exchanging a plurality of CDs at a time 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, CDs cannot be exchanged 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 CDs, 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 each carrying six CDs individually are stacked in a substantially rectangular parallelepiped shape (case) called a 1DIN size or the like to constitute a disc storage unit. The six CDs can be individually inserted and ejected, and one of the six CDs can be sequentially selected and reproduced.
[0005]
For example, when one of six CDs is selected and played back, conventionally, a space is formed in the vicinity of one surface of the selected CD, and a turntable or optical for rotating the CD in this space is used. The pickup was moved in a straight line and inserted for playback.
[0006]
[Problems to be solved by the invention]
However, since the turntable and the optical pickup are linearly moved, the configuration becomes complicated if positioning and fixing at both ends of the moving stroke are performed with high accuracy.
[0007]
Accordingly, an object of the present invention is to provide a disc recording and / or reproducing apparatus that solves such a problem.
[0008]
[Means for Solving the Problems]
In order to achieve such an object, the structure of the disc recording and / or reproducing apparatus according to claim 1 comprises a holding means having a turntable for rotating a selected disk for reproduction, and the holding means. A shaft that rotatably supports, a rotating power supply unit that rotates the clamping unit around the axis, and a first unit that restricts the rotation of the clamping unit at both end positions of a disk insertion / removal position and a reproduction position. A biasing direction for biasing the clamping means at an intermediate position between the first positioning means and the second positioning means, and between the first positioning means and the second positioning means; A separation spring for forming a space on both sides of the selected disk, and a separation cam for forming a space on the both sides of the selected disk. And a holding spring for urging one of the pair of arms constituting the holding means toward the other is provided in the holding means, and the holding spring holds the holding position at the regeneration position. A first restricting means for restricting one of the arms of the means from moving toward the other; a second restricting means for releasing the restriction by the first restricting means by the movement of the separation cam; When the restriction means releases the restriction by the first restriction means, one of the arms moves toward the other to sandwich the selected disc ,
In the disc recording and / or reproducing apparatus according to claim 2, both end portions of an arc hole through which a positioning pin provided in the vicinity of the shaft moves is used as the first positioning means and the second positioning means. It is a sign.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of a disk recording and / or reproducing apparatus according to the present invention will be described below.
[0010]
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.
[0011]
The reproducing means 7 is disposed on both sides of a pickup lifting / lowering platform 10 that moves up and down, and space forming means 11 for forming a space above and below a selected CD of the plurality of CDs in the disk storage unit 3. A lower arm 13 and an upper arm 12 which are rotatably provided on the pickup lifting / lowering platform 10; and a clamping means 14 for entering the space and clamping the selected CD; A disk drive means 15 for rotationally driving the attached and sandwiched CD; a pickup unit 16 provided on the lower arm 13 for reading information from the rotating CD; and an insertion / removal mode which is a state for inserting / removing the CD The gripping force of the transfer means 5 is held only when the playback mode is a playback mode which is a state for playing a CD. A turning force supplying means 17 for rotating convey to 14, clamping means 14 is constituted by the regulating means 18 for setting the time for holding the CD.
(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) Disc storage unit As shown in FIG. 3A, the disc storage unit 3 is composed of six trays 2 and a disk lifting platform 22 on which the six trays 2 are placed. Both ends of four guide columns 23 along the vertical direction are supported by being coupled to the bottom plate 1e and the ceiling plate 1d as support means on the front side.
[0012]
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 for sandwiching the CD between the aluminum plate 2a and the upper surface of the resin 2b is fixed. 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 a lower surface of a separation cam 82, which will be described later, and an upper insertion portion, which will be 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, and as shown in FIG. 3B, the lower end of the spring receiver 2j slightly protrudes inward to form the receiving portion 2k, and the receiving portion 2k receives the lower end of the coil spring 24. It has become. 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.
[0013]
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.
[0014]
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.
[0015]
In this embodiment, the tray shown in FIGS. 3A and 4 is used as the disk mounting means. However, the portion indicated by the two-dot chain line in the drawing is cut, and the outer peripheral portion of the CD in the aluminum plate 2a. It is also possible to use a pair of mounting pieces from which the central portion is removed leaving only both end portions on which is mounted.
(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]
(1) Space forming means As shown in FIG. 2, on the inside of the vertical plates on both sides of the pickup lifting / lowering base 10, a space is formed above and below the selected CD by inserting it between the trays 2 overlapping in the vertical direction. As the space forming means 11, a separation 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 separation cam 82, while FIG. As shown, a guide hole 82b is formed in the lower portion of the separation 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 separation 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 so that the tray 2 is stably supported and the space above and below the tray 2 on which the CD to be played is placed. Is formed. The separation cam 82 is shaped like a slit formed on two plates having different lengths in the front-rear direction, and by sliding the separation 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 are formed respectively, the first separation control portions 82c ₁ second constitute a separate control unit with a separation control unit 82c ₂ and the third separation control unit 82d. 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 serving as a position limiting means for pressing down is formed along the moving direction of the separation 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 portion is formed by an arcuate surface so that the load is constant.
[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]
(2) Holding means The holding means 14 that holds the selected CD by rotating it toward the space above and below the selected CD formed by the space forming means 11 will be described. On the left side of the pickup lift 10, base ends of the lower arm 13 and the upper arm 12 for supporting the turntable 97 are rotatably attached. 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 (described later) on the lower arm 13 and the CD when the holding means 14 is rotated, a support column erected on the bottom plate 1e is placed in the hollow shaft 86 on the pickup lift 10. 92 is inserted.
[0028]
(3) Disk drive means A disk drive means 15 is provided on the upper surface of the tip of the 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 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. The CD is held by the turntable 97 and the chuck plate 99.
[0029]
(4) On the upper surface of the pickup unit lower arm 13, a pickup unit 16 is also mounted 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]
(5) Turning power supply means The structure of the power transmission section for turning the clamping means 14 by the driving force of the transfer motor 46 as the turning power supply means 17 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. That is, both ends of the circular arc hole 10c are the first and second positioning means. 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 as the first and second positions is the b and a positions, the c position, which is an intermediate point between b and a, is the position of the positioning pin 119. It is an inflection point where the direction of movement changes, and the spring hooking portion 10d is arranged at a position corresponding to the position c.
[0034]
(6) Restricting means The upper arm 12 of the clamping means 14 is urged downward by the clamping spring 89, and in order to set the time when the upper arm is lowered by the urging force of the clamping spring 89 as shown in FIG. The restricting means 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, the number assigned to the tray 2 (numbered from 1 to 6 from the top to the 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 disk lift 22 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. When the lower end of the rear side of the separation cam 82 enters (the pin 2c also enters the lower end of the front side, and the same action as that of the pin 2d), and the pin 22b comes to the F position as the second stage. rests on the upper fitting portion 82j pin 2d of the tray 2 in the second stage from the top slides the first separation control unit 82c _1, 1-stage upper tip of the separating cam 82 from above and the second stage 23 enters the space between the pins 2d of the tray 2 of FIG. Next, when the pin 22b as the third stage comes to position G, 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 are inserted into the upper and lower sides together with the upper arm 12 and the lower arm 13. 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, although the driving force of the transfer motor is used as the driving source, a driving motor may be provided separately.
[0063]
【The invention's effect】
Turntable is held in place in the first, second position by the above can be seen from the description, the toggle spring and the first, second positioning means according to the recording and / or reproducing apparatus for disc according to claim 1 Therefore, the turntable is positioned with high accuracy. Therefore, the relative positioning of the turntable and the disk is also performed with high accuracy. Further, even after positioning, the positioning pin is biased by the toggle spring, so that it is not easily affected by the vibration of the vehicle.
[Brief description of the drawings]
FIG. 1 is an external perspective view of a disc player showing an embodiment of a disc recording and / or reproducing 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 storage portion in the disc player, and FIG. 3B is a perspective view in which a main portion of the tray is partially cut away.
4A and 4B relate to a disc storage unit in a 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 disk 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 a CD and showing the mode switching position.
FIGS. 13A and 13B are diagrams for explaining the operation of the operating means in a standby state in which the second CD is selected, and FIG. 13B is a diagram showing a 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 where the push-out lever is rotated when the second CD from the top is ejected.
FIGS. 15A and 15B are diagrams for explaining the operation of the operating means when playing the sixth CD from the top, and FIG. 15B shows the first CD from the top in the playback mode state for playing a CD. 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. Explanatory drawing of an action | operation means when it exists in.
FIG. 17 relates to a disc player when a CD is inserted, (a) is a plan view, and (b) is a front view.
FIG. 18 is a side sectional view of a disc player when a CD is inserted.
FIGS. 19A and 19B relate to the pushing means when the CD is ejected, and FIG. 19A is a plan view and FIG. 19B is a front view.
FIG. 20 is a side cross-sectional view of the pushing means during CD ejection.
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 in which only the selected tray is lowered after the tray is separated into three, and the selected CD is placed on the turntable and is sandwiched by the sandwiching means.
FIG. 26 is a side view showing a state in which only the selected tray is lowered again and separated from the selected CD after the selected CD is clamped by the clamping means.
FIG. 27 is an explanatory view showing a state in which a selection CD is released by raising a leaf spring of a selection tray during reproduction.
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 restricting means when the clamping means occupies the standby position.
FIGS. 33A and 33B are action explanatory views showing a state where the holding means occupies the reproduction position, where FIG. 33A shows a state where the holding is prevented, and FIG. 33B is an action explanatory view showing a state where the prevention is released.
FIG. 34 is an operation explanatory view showing a state in which the holding means holds the CD by releasing the blocking by the restricting means.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 3 ... Disc accommodating part, 5 ... Transfer means, 10c ... Arc hole, 12 ... Upper arm, 13 ... Lower arm, 14 ... Holding means, 17 ... Turning power supply means, 46 ... Motor for transfer, 82 ... Separation cam, 82r ... Cam groove (second restricting means), 86 ... Hollow shaft (shaft) , 89 ... Holding spring, 92 ... Strut, 97 ... Turntable, 119 ... Positioning pin, 120 ... Toggle spring, 127 ... Restraining lever (first restricting means) ), 127a ... pin (second regulating means) 171 ... disc, B ... standby position, A ... reproduction position

Claims (2)

Holding means having a turntable for rotating a selected disk for reproduction, a shaft for rotatably supporting the holding means, and a rotating power supply means for rotating the holding means about the axis An intermediate position between the first positioning means and the second positioning means, and a first positioning means and a second positioning means for restricting the rotation of the clamping means at both end positions of the disk insertion / removal position and the reproduction position. A toggle spring that reverses the urging direction for urging the clamping means and holds the clamping means at the insertion / removal position or the regeneration position,
A separation cam that forms a space on both sides of the selected disk is provided, and the separation cam is provided with a mechanism for starting rotation of the clamping means to the reproduction position by the turning power supply means,
The clamping means is provided with a clamping spring that urges one of the pair of arms constituting the clamping means toward the other, and one of the arms of the clamping means moves toward the other at the regeneration position by the clamping spring. There is provided a first restricting means for restricting the movement, a second restricting means for releasing the restriction by the first cam by the movement of the separation cam, and the second restricting means by the first restricting means. By releasing, one of the arms moves toward the other to clamp the selected disc, and a disc recording and / or reproducing apparatus,   2. The disk recording and / or reproducing apparatus according to claim 1, wherein both end portions of an arc hole in which a positioning pin provided in the vicinity of the shaft moves is used as the first positioning means and the second positioning means. .

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