JPH03248367A - Disk player - Google Patents

Abstract

PURPOSE:To automatically carry a recording medium to a required position only with the aid of placing it on a prescribed position by releasing the coupling of a supporting plate and a chucking arm according as a chucking action by a chucking disk is finished and the supporting plate is turned in a lower direction thereafter. CONSTITUTION:The chucking arm 16 where the chucking disk 18 which chucks a disk with respect to a spindle 13 is fitted is turned and energized in the direction of the spindle 13 by a spring. The arm 16 is constituted so that it is coupled to the supporting plate 27 through a coupling arm 43 under an engaged state. Therefore, the disk is automatically carried to the required position by a driving roller 20b. Under such a state, the arm 16 is turned by the bias force of the spring under the coupled state to the plate 27 and the disk is chucked with respect to the spindle 13 by the chucking disk 18. After the chucking action is finished, the coupling of the supporting plate 27 and the arm 16 is released according as the plate 27 is turned in the lower direction. Thus, the disk is stably rotated by the spindle 13 and carried to the required position.

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] FIELD OF INDUSTRIAL APPLICATION The present invention relates to a disc player for a disc-shaped recording medium, such as a digital audio compact disc.

[0002] Background Art and Problems Compact disc players (hereinafter referred to as CD players) have two methods for loading discs: a built-in carrier system, for example, a system in which the disc is placed on a pull-out disc table, and then loaded. However, this type of system requires space in front of the player to pull out the disc table, which causes problems in terms of space, especially when mounting a CD player in a car. Due to the problem of material, it is desirable to implement a slot-in method in which the disc is directly loaded.
In this case, the chuck slide method, guide roller method, etc. can be considered as a means of transporting the disk, but in either case it is difficult to freely set the amount of movement of the disk, and when loading the disk, the disk surface must be held between the fingers and inserted. Otherwise, there is a risk of staining or damaging the disc surface.

[0003] Purpose of the Invention In view of the above, the present invention provides a disc-shaped recording medium conveyance system that allows the disc-shaped recording medium to be automatically conveyed to a required position simply by placing the recording medium in a predetermined position. It provides equipment.

[0004] Embodiments Hereinafter, embodiments in which a disc-shaped recording medium conveying device according to the present invention is applied to a disc loading mechanism of a compact disc player will be described with reference to the drawings.

[0005] In the figure, reference numeral 1 indicates a case for a compact disc, and a frame-like panel 4 equipped with an insertion slot 2 for the disc D and each operation member 3 is fitted on the front side of the case. An opening/closing lid 5 is mounted on the inside so that it can be pushed open by a disc D. The opening/closing lid 5 is locked by a locking mechanism 6 in the closed state, and when it is pressed from the outside in this closed state and slightly rotated inward, the locking mechanism 6 operates and the lock is released, and the opening/closing lid 5 is [0006] 11 is a frame installed in the case 1, and the chassis 12
is fixed horizontally, a spindle motor 13 is attached to the center of the chassis 12, and a groove 14 is formed from near the rear corner toward the center, that is, toward the spindle motor 13. The optical pickup 15 is moved along the kerf 14. A chucking arm 16 is rotatably supported on the rear low corner of the chassis 12 and is always biased in the direction of collapse by a spring 17. Correspondingly, a chucking disk 18 is rotatably mounted. Further, on the front edge side of the chassis 12, a guide roller mechanism 19 and a drive roller mechanism 20 for loading the disk D are mounted at a required interval in the front-rear direction.

[0007] The guide roller mechanism 19 located on the front side consists of a fixed guide roller 9a and a movable roller 9b, and the fixed guide roller 9a is attached to a bearing 2 fixed to the tip of the frame 11.
1.21' is supported via a shaft 22a, and the movable guide roller 9b is pivoted to the frame side so as to be rotatable in the vertical direction, and is always pivoted upward by a spring or the like at the tip of the arm 23.23'. The guide rollers 19a, 19b are rotatably supported via a shaft 22b, and are vertically opposed to each other so as to be movable toward and away from each other.

[0008] The drive roller mechanism 20, which is installed opposite to the guide roller mechanism 19 configured in this manner at a required interval, is composed of a fixed roller 20a and a drive roller 20b.
0a is the bearing 24.24' fixed to the frame side
A roller drive mechanism 2 is supported via a shaft 25a, and the drive roller 20b is moved in the vertical direction with respect to the frame side.
The fixed roller 20a is supported by and rotationally driven by the fixed roller 20a.
The object is moved towards and away from the object. The rollers 9a, 19b, 20a, 20b of the guide roller mechanism 19 and drive roller mechanism 20 configured as described above have a small diameter at the center, gradually increase in diameter toward both sides, and have the same diameter at both ends. is formed. That is, as shown in FIG. 4, rollers 9a, 19b
, 20a, 20b are the central part 19a1.19b1.20a
, 20b (7) Diameter d and both ends 19a,
The relationship between the diameter d of 19b, 20a, and 20b211222 is dl<d2, and if the total length of the roller is 1, the length of the center part is 1, and the length between the inner sides of both ends is 1, then l≧12>11 The condition is that ≧O, that both sides are symmetrical with respect to the feed center a, and that d2-d1≧1/2t, where t is the thickness of the disk D.

[0009] Rollers 9a, 19b and 20a formed in this way,
When the 20b are brought into contact with each other, a gap is created in the center, and a gap is formed that tapers in both directions from this gap.

The surface of each roller is made of a suitable elastic material such as rubber or soft plastic, and the shafts 22a, 22b, 25a, 2
5b is formed integrally with the roller or is bonded to the roller and rotated together with the roller.

[0010] Next, the roller drive mechanism 26 will be explained with reference to FIG.

[0011] 27.27' is the shaft pin 2 on both sides of the front part of the frame 11.
A support plate 8.28' is rotatably supported vertically and connected by a connecting plate 27'', and a bearing 29.29' is fixed approximately in the center of both support plates, and a drive roller is attached to this bearing. Both ends of a shaft 25b of the shaft 25b of the shaft 20b are penetrated and supported, and one end side of this shaft 25b, that is, one support plate 27
A shaft 3 of a motor 31 as a drive source is attached to a support plate 27 with a gear 30 fixed to a protrusion on the side that is supported by the shaft.
The driving force of the motor 31 is transmitted to the drive roller 20b by interlocking the gear 32 fixed to the roller 1a and the intermediate gears 33 and 34 pivotally supported by the support plate 27. That is, a gear (hereinafter referred to as a drive gear) 30 and intermediate gears 33 and 34 fixed to the drive roller 20b have large diameter teeth 30a, 33a, 34a and small diameter teeth 30b, 33b, 34b.
The gear 32 of the motor 31 is meshed with the large-diameter tooth portion 33a of the first intermediate gear 33, and the small-diameter tooth portion 33b of the first intermediate gear 33 and the large-diameter tooth portion of the second intermediate gear 34 are meshed with each other. 34a
are meshed with each other, and the small diameter tooth portion 34 of the second intermediate gear 34
b and the large-diameter tooth portion 30a of the drive gear 30 mesh with each other, and the driving force is transmitted to the drive roller 20b as described above.

[0012] And the support plate 27.27' is the spring 35.35'
The drive roller 20b is always rotated upwardly and pressed against the fixed roller 20a. Further, a gear 36 for rotating the support plate is provided at the tip of one of the support plates 27.
is pivotally supported, and this gear also has a large diameter tooth portion 36a and a small diameter tooth portion 36.
b, the large-diameter tooth portion 36a is engaged with the small-diameter tooth portion 30b of the drive gear 30, and the lowering movement mechanism lowers the support plate 27 against the biasing force of the spring 35 via the small-diameter tooth portion 36b. It is designed to apply a rotational force to.

[0013] In this example, this lowering operation mechanism is composed of a segment gear arm 38 and a plunger arm 40. The segment gear arm 38 is attached to the frame side corresponding to the tip end side of the support plate 27, and The rack portion 38a is pivotally supported by a shaft pin 37 so as to be rotatable toward and away from the support plate, and is rotationally biased toward the support plate by a spring 39, and the rack portion 38a normally meshes with the small diameter tooth portion 36b of the support plate rotation gear 36. The plunger arm 40 is pivoted on the frame side at a central fulcrum, and has a pin 40a protruding from one end.
is engaged with the segment gear arm 38, and the other end is connected to a plunger 41, which is rotated by the operation of the plunger 41 to move the segment gear arm 38 toward the spring 3.
The support plate 27 is rotated in a direction away from the support plate 27 against the biasing force of the support plate 9 .

[0014] Furthermore, a groove 38b is formed on the inner surface side of the segment gear arm 38 and is substantially parallel to the rack portion 38a.
A guide groove 38c is formed which opens wide from the upper part of the rack part 38a toward the rack part 38a, and an engagement pin 4 is formed on the distal end surface of the force support plate 27 to engage and slide from the guide groove 38c into the groove 38b.
2 is provided protrudingly. Also, on both support plates 2727' are arms 23 and 23' that pivotally support the movable guide roller 19b.
Engagement pieces 27a, 27a that are engaged on the upper edge side are protruded, and the arm 23 is always rotated upwardly by a spring or the like, and the upper edge side is engaged with the engagement pieces 27a, 27a, so that the support plate 27, 27' is rotated downward as the support plate 27 is rotated upward, but it can be rotated downward independently without being associated with the support plate 27. Also, this arm 23.23' is the support plate 2
When the roller 7.27' is rotated upward, it is positioned above so that the movable guide roller 19b is in contact with the fixed guide roller 19a.

[0015] Also, an engagement piece 27b is provided on the inner surface of the tip end of one of the support plates 27.
is provided in a protruding manner, and is engaged with the other end 43c of the connecting arm 43, which raises and lowers the chucking arm 16 in conjunction with the raising and lowering movements of the support plate 27. The connecting arm 43 has an intermediate portion 43a that is pivotally supported on the frame side, one end portion 43b extending in the shape of a tongue so as to correspond to approximately the center of the lower surface of the chucking arm 16, and the other end portion 43c. Support plate 2
It is formed to extend in seven directions so that its end surface corresponds to the lower surface of the engagement piece 27b.

This connecting arm 43 is always pivoted upward by a spring 44 interposed between it and the frame 11, and one end 43b abuts against the lower surface side of the chucking arm 16. The rotation in the direction of lodging acts to restrict rotation due to force.

[0016] Next, a disc loading operation of the player of this example configured as above will be explained.

[0017] First, when the disc D is pushed against the opening/closing lid 5 attached to the insertion slot 2 of the front panel 4 of the player case 1, the lid locking mechanism is activated in conjunction with the opening/closing operation of the opening/closing lid 5. 6 is turned on, the plunger 41 is operated, the plunger arm 40 is rotated, and the opening/closing lid 5 is fully opened by a lid opening/closing mechanism (not shown) interlocked with the lid locking mechanism 6. Ru. On the other hand, due to the rotation of the plunger arm 40, the segment gear arm 38 is rotated in a direction away from the support plate 27 against the biasing force of the spring 39.
The meshing with the small diameter tooth portion 36b is released and is maintained in this state.

[0018] Next, the disc D is moved to the roller 19 of the guide roller mechanism 19.
When the movable guide roller 19b is inserted between a and 19b, the movable guide roller 19b is moved downward via the arm 23, and the disk D is held between both rollers. 20
When it reaches between a and 20b (A in FIG. 9), the optical switch 8 disposed at this location is turned on and the motor 31 is rotated in the normal direction. The driving force of this motor 31 is transmitted from the gear 32 fixed to the motor shaft 31a to the gear 30 fixed to the shaft 25b of the drive roller 20b via intermediate gears 33 and 34.
The drive roller 20b is rotated in the feeding direction of the disk D (the direction indicated by the arrow in A in FIG. 9), and the disk D is in a state in which the drive roller 20b has moved slightly downward due to the rotation of the drive roller 20b against the biasing force of the spring 35 of the support plate 27. is sandwiched between the fixed roller 20a and transported to a predetermined position (
B) in the same figure. In this state, the disk D comes into contact with the switch 9 disposed at the rear end of the chassis 12 and turns off the circuit of the plunger 41. Therefore, the plunger arm 40 is rotated back and the segment gear arm 38 is activated by the spring 39. It returns to its original state due to the biasing force, and its rack portion 38a is engaged with the small-diameter bellows portion 36b of the support plate rotation seedling wheel 36.

[0019] Therefore, the support plate 27 is rotated downward about the shaft support by the shaft pin 28 against the upward biasing force of the spring 35 due to the rotation transmitted from the drive roller gear 30 of the support plate rotation gear 36. As a result of this downward rotational movement, the engagement piece 27b of the support plate 27 presses the other end 43c of the connection arm 43 downward, so that the connection arm 43 resists the biasing force of the spring 44 and rotates the support plate 27. It is rotated downward along with the downward rotation.

Therefore, the chucking arm 16, whose rotation is restricted by the one end 43b of the connecting arm 43, has a spring 17
Due to the biasing force, the connecting arm 43 is rotated, and the center of the disk D is chucked onto the spindle motor 13 by the chucking disk 18 attached to the tip thereof. At this time, the movable guide roller 19
b is also moved downward because the arm 23 is rotated downward integrally with the support plate 27 via the engagement piece 27a.

[0020] Further, an appropriate gap is created between the engaging portion of the chucking arm 16 and the one end 43b of the connecting arm 43, and the drive roller 20b and movable guide roller 19b are rotated downward until they are separated from the lower surface side of the disk D. Then, this support plate 2
7, the loading completion switch 10 is operated and the motor 31 is stopped.

[0021] When the loading is completed as described above, the disk D is attached to the chucking arm 16 on the spindle motor 13.
The disk D is chucked by the chucking disk 18, and the drive roller 20b and movable guide roller 19b are held in a lowered state away from the lower surface of the disk D, and the disk D is reproduced by the optical pickup 15.

[0022] Next, when ejecting the disk D from the chucked state, when the eject operation button is pressed, the motor 31 is reversely turned on and the reverse operation of the above-described disk D feeding and chucking operation is performed.

That is, when the motor 31 is turned on in the reverse direction, the drive roller 20b rotates in the reverse direction, and the support plate rotation gear 36 of the support plate 27 rotates in the reverse direction.
The small-diameter tooth portion 36b of the segment gear arm 38 rotates in reverse and engages with the rack portion 38a of the segment gear arm 38. Therefore, the support plate 27 is rotated upward around the shaft support, and with this movement, the connecting arm 43 is rotated upwardly. Due to the biasing force of the spring 44, the support plate 27 is rotated upward following the engagement piece 27b. Accordingly, the chucking arm 16 is pushed up by one end 43b of the connecting arm 43 against the biasing force of the spring 17 of the shaft support, and the chucking disk 18 is separated from the upper surface of the disk D. On the other hand, the drive roller 20b
While being rotated in the opposite direction, the disk D is moved upward via the support plate 27, pushing up the disk D and being held between the fixed rollers 20a again. Also, at this time, the guide roller mechanism 19
Since the movable guide roller 19b is no longer pressed down by the support plate 27 of the arm 23, it is moved upward by the biasing force of the spring and comes into contact with the fixed guide roller 19a.

[0023] In this way, when the support plate 27 is raised and rotated to a predetermined position and the disk D is moved forward and separated from the switch 9 at the rear end of the chassis, this switch 9 is turned on and the plunger 41 is turned on. The plunger arm 40 rotates to rotate the segment gear arm 38 in a direction away from the support plate 27 against the biasing force of the spring 39, and the rack portion 38a is connected to the small diameter tooth of the rotation seedling wheel 36. It is separated from the portion 36b. Therefore, the support plate 27 can freely rotate, and both the support plates 27, 27' are integrally rotated upward by the biasing force of the spring 35, 35' via the connecting plate 27'', and the drive roller 20b and fixed roller 20a are rotated upwardly. As a result, the disc D is completely clamped, and the disc D is moved in the direction of the insertion slot 2 through the guide rollers 19a and 19b by the reverse rotation of the drive roller 20b.

[0024] When the disk D is moved to a predetermined position, the motor 31 is turned off by the detection switch 8, and the movement of the disk D is stopped. In this state, when the disk D is pulled out from the insertion slot 2 and the opening/closing lid 5 is closed, the switch 7 is turned off and the plunger 41 becomes inactive, and the plunger arm 4
0 is rotated back and the segment gear arm 38 is rotated in the direction of the support plate 27 by the biasing force of the spring 39, and the rack portion 38a is rotated to the small diameter tooth portion 36b of the support plate rotation gear 36.
is engaged and returns to its original state.

[0025] In the above operation, the support plate 27 is rotated by the same wheel 36 for rotating the support plate.
When the support plate 27 is rotated upward due to the engagement between the small diameter tooth portion 36b of the
The pin 42 slides within the groove 38b of the segment gear arm 38, and the pin 42 faces the guide groove 38c when the support plate 27 is rotated upward to the top. By operating the plunger 41 in this state, the segment gear arm 38 is rotated in a direction away from the support plate 27 via the plunger arm 40, and the rack portion 38 is rotated in a direction away from the support plate 27.
This means that the engagement between the small-diameter tooth portion 36b of the seedling wheel 36 for rotating the support plate is released.

[0026] In this example, the guide roller mechanism 19 is provided simply to maintain the posture of the disk D, so instead of this roller mechanism, other types of guides such as plate-shaped guides can perform the same function. .

[0027] The disc player illustrated above is configured to be loaded with the disc D stored in the storage case. This disk storage case 51 has a size that allows the disk D to be stored with approximately half its circumference exposed.The front half 51a is stepped and thinner than the rear half 51b, and when not in use, the thin front half is The lid 52 is fitted onto the disk D.
is hidden.

[0028] In order to load the disc D stored in the storage case 51 into the disc player, the lid 5 is removed from the storage case 51.
2 is removed and inserted into the insertion opening 2 of the player case 1 with approximately half the circumference of the disc D exposed, its tip pushes open the opening/closing lid 5, and the front half 51a of the storage case 51 is also inserted. When the front half 51a of the storage case 51 is inserted into the insertion slot 2, it is pressed from both sides due to its inner circumferential shape, and the upper and lower surfaces are bent.
When the disk D is separated from the disk D, the lock is released and the disk D can be taken in and taken out freely, and is held and conveyed by the above-mentioned conveyance device.

[0029] As described above, in the disc player of this example, the support plate 27, to which the drive roller 20b for conveying the disc D by rotational contact is attached, is rotatably supported on the frame side of the machine body. The chucking arm 16 is rotated vertically by a drive mechanism consisting of a rotation gear 36 and a segment gear arm 38, and a chucking plate 18 for chucking the disk D against the spindle 13 is attached to the chucking arm 16 in the direction of the spindle 13. The chucking arm 16 is rotatably biased by a spring 17, and the chucking arm 16 is connected to the support plate 27 through a connecting arm 43 in an engaged state. With this configuration, the disk D is automatically conveyed to a desired position by the drive roller 20b, and in this state, the chucking arm 1
6 is rotated in a connected state with the support plate 27 by the biasing force of the spring 17, and the spindle 1 is rotated by the chucking disk 18.
After the chucking operation is completed, the support plate 27 is chucked in response to the downward rotation of the support plate 27.
7 and the chucking arm 16 is released, and the disk D is chucked and held only by the rotating biasing force of the chucking arm 16. Therefore, the disk D is reliably chucked to the spindle 13 and the disk D is firmly chucked to the spindle 1.
[0030] Application Examples The present invention can be applied to various types of disc players, such as a disc player installed in a car or the like, as well as a portable disc player for home use.

[0031] Effects of the Invention As described above, according to the present invention, when the disk that is automatically nipped and conveyed by the rotational contact of the drive roller is placed on the spindle, the drive roller moves downward, that is, it is separated from the disk surface. Since the chucking arm performs the chucking operation in conjunction with the chucking operation, the disk is reliably chucked onto the spindle and rotated stably, resulting in good playback.

[Brief explanation of drawings]

[Fig. 1] External view of an example of a disc player to which the device of the present invention is applied

[Figure 2] Enlarged vertical cross-sectional view of a portion of the same, with the disc inserted.

[Fig. 3] A perspective view of an example of a disc player mechanism equipped with the device of the present invention.

[Fig. 4] A front view and a plan view of an example of a roller mechanism in the device of the present invention.

[Figure 5] Same, side view of an example of the drive mechanism part

[Figure 6] Cross-sectional view taken along line A-A in Figure 5

[Figure 7] A cross-sectional view of a portion of the fixed roller part

[Figure 8] Perspective view of chucking part

[Figure 9] Cross-sectional view explaining the operation of the roller mechanism section

FIG. 10 is a perspective view of an example of a storage case that stores disks transported by the device of the present invention.

[Explanation of symbols]

11 Frame 13 Spindle 16 Chucking arm 20b Drive roller 27 Support plate 30 Drive gear 31 Motor 36 Rotation gear 38 Segment gear arm 38a Rack section 3 connecting arm

[Document core]

[Figure 1] drawing

[Figure 3]

[Figure 4] 22&(25b)

[Figure 5]

Claims (1)

[Claims] A disc player that pinches and conveys an inserted disk includes a support plate that is rotatably supported on a frame side to which a drive roller as a nipping and conveyance mechanism is attached, and a support plate that is rotatably biased in the direction of a spindle. The chucking arm includes a chucking arm provided with a chucking disk, and a drive mechanism for vertically rotating the support plate, and the chucking arm rotates in response to the downward rotation of the support plate by the drive mechanism. The chucking operation by the chucking disk is completed by being rotated in a connected state with the support plate by the rotation biasing force, and as the support plate is subsequently rotated downward, the support plate and the chuck are rotated in a connected state. A disc player characterized in that the connection with the king arm is released.