JPH0648573B2 - Disk-shaped recording medium transport device - Google Patents

Description

Detailed Description of the Invention

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc-shaped recording medium conveying device provided in a disc-shaped recording medium, for example, a player of a digital audio compact disc.

BACKGROUND ART AND ITS PROBLEMS In a compact disc player (hereinafter referred to as a CD player), a disc loading system is a built-in carrier system, for example, a system in which a disc is placed on a drawer type disc table and loaded. Although used, this system requires a space for pulling out the disc table on the front side of the player body, which is a space problem, especially when a CD player is mounted on a car or the like, a protrusion in a narrow vehicle compartment. Therefore, it is desirable to implement a slot-in system in which a disc is directly loaded. In this case, a chuck slide system, a guide roller system, etc. can be considered as the disc transfer means. It is difficult to set, and the disc surface must be handled by hand when loading the disc. In may be damaged or soiled disk surface must be inserted and clamped.

SUMMARY OF THE INVENTION In view of the above, the present invention is directed to the transportation of a disk-shaped recording medium, which is capable of automatically transporting the recording medium to a required position only by placing the recording medium at a predetermined position. A device is provided.

Embodiments Embodiments in which the 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 below with reference to the drawings.

In the figure, reference numeral 1 designates a case of a compact disc, on the front side of which a frame-shaped panel 4 having an insertion slot 2 for discs D and respective operating members 3 is fitted, and the insertion slot 2 An opening / closing lid 5 is mounted on the inside so as to be able to be pushed open by a disc D. The opening / closing lid 5 is locked by the locking mechanism 6 in the closed state. When the opening / closing lid 5 is pressed from the outside and slightly inwardly rotated in this closed state, the locking mechanism 6 operates to unlock the opening / closing lid 5. It will be released.

Reference numeral 11 denotes a frame installed in the box 1,
The chassis 12 is fixed horizontally, and the chassis 1
A spindle motor 13 is attached to the center of the second motor 2, and the spindle motor 1 is moved toward the center from the vicinity of the rear corner.
The cut groove 14 is formed in three directions, and the optical pickup 15 is moved along the cut groove 14. A chucking arm 16 is rotatably supported at the other corner of the rear side of the chassis 12 and is always biased in the fall direction by a spring 17. The tip of the chucking arm 16 is attached to the spindle 13. Correspondingly, the chucking board 18 is rotatably attached. A guide roller mechanism 19 for loading the disc D and a drive roller mechanism 20 are mounted on the front edge side of the chassis 12 at a required interval in the front-rear direction.

The guide roller mechanism 19 located on the front side
Is composed of a fixed guide roller 19a and a movable roller 19b, and the fixed guide roller 19a is rotatably supported by bearings 21 and 21 'fixed to the tip of the frame 11 via a shaft 22a.
The movable guide roller 19b is pivotally attached to the frame 11 so as to be vertically rotatable, and is rotatably supported by the ends of arms 23 and 23 'which are rotatably biased upward by a spring or the like via a shaft 22b. Both guide rollers 19a, 19
b is vertically opposed so that it can come into contact with and separate from it.

A guide roller mechanism 1 having such a structure
The drive roller mechanism 20 which is installed in the rear of 9 at a required interval is composed of a fixed roller 20a and a drive roller 20b.
The fixed roller 20a is a bearing 2 fixed to the frame 11.
4, 24 'are rotatably supported by a shaft 25a and drive roller 2
0b is supported by a roller driving mechanism 26 that moves vertically with respect to the frame 11, is driven to rotate, and moves toward and away from the fixed roller 20a. Each of the rollers 19a, 19b and 20a, 20b of the guide roller mechanism 19 and the drive roller mechanism 20 configured as described above has a small diameter in the central portion and a gradually increasing diameter in both side directions, and both ends have the same diameter. Is formed in. That is, as shown in FIG.
9a, 19b, 20a and 20b are central portions 19a ₁ and 19
b ₁ , 20a ₁ , 20b ₁ diameter d ₁ and both ends 19
_{a 2, 19b 2, 20a 2} , the relationship between the diameter _{d 2} of 20b ₂ is _d 1 _{<d 2} also the entire length of the roller 1, ₁ the length of the central portion _1, the length between the inner end portions If the length is 1 _{2 then} 1 ≧
1 ₂ > 1 ₁ ≧ 0, both sides are symmetrical with respect to the feed center a, and d ₂ −d ₁ ≧ 1 / 2t, where t is the thickness of the disk D. To do.

The rollers 19a, 19 thus formed
When b and 20a and 20b are in contact with each other, a space h is generated in the central part, and a space narrowing in a taper shape in both directions from the space is formed. The surface of each roller is made of a suitable elastic material such as rubber or soft plastic, and the shafts 22a, 22b, 25a,
25b is integrally formed with the roller, or is adhered and is rotated integrally.

Next, the roller drive mechanism 26 will be described with reference to FIG.

Numerals 27 and 27 'are support plates rotatably supported in the vertical direction by shaft pins 28 and 28' on both sides of the front part of the frame 11 and are connected by a connecting plate 27 ". Bearings 29, 29 'are fixed at substantially the center, both ends of a shaft 25b of the drive roller 20b pass through the bearing and are rotatably supported, and are rotatably supported on one end side of the shaft 25b, that is, one support plate 27. The gear 31 is fixed to the protruding portion on the side where the motor 31 is mounted on the support plate 27 as a drive source.
Of the motor 31 and the gear 32 fixed to the shaft 31 a of the motor 31 and the intermediate gears 33 and 34 pivotally supported by the support plate 27.
Is transmitted to the drive roller 20b. That is, the gear (hereinafter referred to as drive gear) 30 fixed to the drive roller 20b and the intermediate gears 33 and 34 include the large diameter tooth portions 30a and 33a and 34a and the small diameter tooth portions 30b and 33.
b, 34b, the gear 32 of the motor 31 meshes with the large diameter tooth portion 33a of the first intermediate gear 33, and the large diameter tooth portion 33b of the first intermediate gear 33 and the large diameter tooth portion of the second intermediate gear 34 The radial tooth portion 34a is meshed with each other, and the small diameter tooth portion 34b of the second intermediate gear 34 and the large diameter tooth portion 30a of the driving gear 30 are meshed with each other to transmit the driving force to the driving roller 20b as described above.

The support plates 27, 27 'are springs 3
The driving roller 20b is constantly biased upward by 5, 35 'so that the driving roller 20b is pressed against the fixed roller 20a. A support plate rotating gear 36 is pivotally supported at the tip of one of the support plates 27, and this gear also has a large diameter tooth portion 36a and a small diameter tooth portion 36b.
The small-diameter tooth portion 30b is engaged with the small-diameter tooth portion 36b to apply a rotational force to the lowering mechanism that lowers the support plate 27 against the biasing force of the spring 35 via the small-diameter tooth portion 36b.

In this embodiment, this lowering mechanism is composed of a segment gear arm 38 and a plunger arm 40. The segment gear arm 38 corresponds to the tip side of the support plate 27, and is attached to the frame 11 and the support plate 27. On the other hand, it is pivotally supported by a shaft pin 37 so as to be rotatable in the contact and separation directions, and is pivotally biased toward the support plate by a spring 39 so that its rack portion 38a normally meshes with a small diameter tooth portion 36b of the support plate rotation gear 36. Has been done. The plunger arm 40 is pivotally supported by the frame 11 at a central fulcrum, a pin 40a protruding at one end is engaged with the segment gear arm 38, and the other end is connected to the plunger 41. The segment gear arm 38 is rotated by the operation so as to rotate in the direction of separating from the support plate 27 against the biasing force of the spun rig 39.

A groove 38b is formed on the inner surface of the segment gear arm 38 substantially parallel to the rack portion 38a.
A guide groove 38c is formed so as to widen from the upper portion of the groove 38b in the rack portion 38a direction.
An engaging pin 42, which is slidably contacted with the groove 38b from the guide groove 38c, is provided on the tip end surface of the. Also, both support plates 27,
An arm 2 having a movable guide roller 19b axially supported at 27 '.
Engagement pieces 27a, 27 engaged with the upper edge side of 3, 23 '
The arm 23 is constantly pivoted upward by a spring or the like so that the upper edge side is engaged with the engaging pieces 27a, 2a.
It is engaged with 7a 'and pivoted downward as the support plates 27, 27' pivot upward, but independently of the support plate 27 it can pivot downward. Further, the arms 23, 23 'are positioned above the support plates 27, 27' when the support plates 27, 27 'are rotated upward, and the movable guide roller 19b is fixed by the fixed guide roller 19b.
It is formed so as to face a.

An engaging piece 27b is projected on the inner surface of the tip of one of the support plates 27, and the other end of the connecting arm 43 for raising and lowering the chucking arm 16 in association with the raising and lowering operation of the support plate 27. The portion 43c is engaged. The intermediate portion 43a of the connecting arm 43 is pivotally supported by the frame 11, and one end portion 43b is extended and formed in a tongue shape so as to correspond to substantially the central portion on the lower surface side of the chucking arm 16, and the other end portion 4
3c is extended in the direction of the support plate 27, and its end face corresponds to the lower surface of the engagement piece 27b. The connecting arm 43 is constantly urged and biased upward by a spring 44 interposed between the connecting arm 43 and the frame 11, and one end portion 43b abuts on the lower surface side of the chucking arm 16 so that the chucking arm 16 is supported by the spring 17. It acts so as to regulate the rotation due to the rotational biasing force in the fall direction.

Next, the disc loading operation of the player of the present example configured as described above will be described.

First, when the opening / closing lid 5 attached to the insertion opening 2 of the front panel 4 of the player casing 1 is pushed by the disk D, the lid locking mechanism is interlocked with the opening / rotating 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) that is interlocked with the lid locking mechanism 6. It On the other hand, due to the rotation of the plunger arm 40, the segment gear arm 38 is rotated in the direction of separating from the support plate 27 against the biasing force of the spring 39, so that the rack portion 38a and the support plate rotation gear 36 of the support plate 27 are rotated. The meshing with the small diameter gear 36b is released, and the state is maintained.

Next, the disk D is moved to the guide roller mechanism 19
When the movable guide roller 19b is inserted between the rollers 19a and 19b, the movable guide roller 19b is moved downward via the arm 23, the disc D is sandwiched between the two rollers, and further the drive roller mechanism 20 positioned behind the guide roller mechanism 19 is provided.
When it reaches between the rollers 20a, 20b (A in FIG. 9), the optical switch 8 arranged at this portion is turned on and the motor 3
1 is rotated forward. The driving force of the motor 31 is the motor shaft 3
A gear 30 fixed to the shaft 25b of the drive roller 20b from a gear 32 fixed to the drive roller 1a via intermediate gears 33 and 34.
And the drive roller 20b is rotated in the feeding direction of the disc D (the direction of arrow b in FIG. 9A), the drive roller 20b of the disc D is moved by the spring 35 of the support plate 27.
Due to the rotation counteracting the biasing force caused by, the sheet is sandwiched by the fixed roller 20a and moved to a predetermined position while being moved slightly downward (B in the same figure). In this state, the disk D comes into contact with the switch 9 arranged at the rear end of the chassis 12 to turn off the circuit of the plunger 41, so that the plunger arm 40 is pivotally returned and the segment gear arm 38 moves to the spun rig 39. The rack portion 38a is returned by the biasing force, and the rack portion 38a is meshed with the small diameter gear 36b of the support plate rotating gear 36.

Therefore, the support plate 27 is a gear 36 for rotating the support plate.
The rotation transmitted from the drive roller gear 30 starts the downward rotation around the shaft support portion by the shaft pin 28 against the upward biasing force of the spring 35, and the downward rotation operation causes the support plate 27 to move. Since the engagement piece 27b presses the other end 43c of the connecting arm 43 downward, the connecting arm 43 is rotated downward as the support plate 27 is lowered against the biasing force of the spring 44. Therefore, one end 4 of the connecting arm 43
The chucking arm 16 whose rotation is regulated by 3b is rotated by the biasing force of the spring 17 with the rotation of the connecting arm 43, and the center of the disk D is moved by the chucking board 18 attached to the tip thereof. It will be chucked on the spindle motor 13. On this occasion,
The movable guide roller 19b is also moved downward because the arm 23 is rotated downward together with the support plate 27 via the engagement piece 27a.

Further, an appropriate gap is formed in the engaging portion between the chucking arm 16 and the one end portion 43b of the connecting arm 43, and the driving roller 20b and the movable guide roller 19b are lowered and rotated until they are separated from the lower surface side of the disk D. Then,
The loading plate 10 is operated by the support plate 27 to stop the motor 31.

As described above, when the loading is completed, the disk D is chucked on the spindle motor 13 by the chucking board 18 of the chucking arm 16, and the driving roller 20b and the movable guide roller 19b are moved from the lower surface side of the disk D. The optical pickup 15 reproduces the disc D while the disc D is held in the lowered state.

Next, when ejecting the disk D from the chucking state, when the eject operation button is pressed, the motor 31 is reversely turned on and the reverse operation of the disk D feeding chucking operation described above is performed. That is, when the motor 31 is turned on in the reverse direction, the drive roller 20b is rotated in the reverse direction and the support plate rotating gear 36 of the support plate 27 is rotated.
Also, the small-diameter gear 36b reversely meshes with the rack portion 38a of the segment gear arm 38 in reverse, so that the support plate 27 is rotated upward about the shaft support portion, and the connecting arm 43 causes the spring to rotate. The biasing force of 44 follows the engagement piece 27b of the support plate 27 to rotate upward. Along with this, the chucking arm 16 is pushed up by the one end portion 43b of the connecting arm 43 against the biasing force of the spring 17 of the shaft support portion, and the chucking board 18 is separated from the upper surface of the disk D. On the other hand, the drive roller 20b
Also, while being reversely rotated, it is moved upward through the support plate 27 to push up the disk D and sandwich it again with the fixed roller 20a. At this time, the guide roller mechanism 19
Since the movable guide roller 19b is released from being pushed down by the support plate 27 of the arm 23, it is moved upward by the biasing force of the spring and is brought into contact with the fixed guide roller 19a.

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, the switch 9 is moved.
Is turned on, the plunger 41 is operated, the plunger arm 40 is rotated, and the segment gear arm 38 is rotated in the direction away from the support plate 27 against the biasing force of the spring 39 to rotate the rack portion 38a. The dynamic gear 36 is separated from the small diameter gear 36b. Therefore, the support plate 27 is free to rotate, and both support plates 27 and 27 'are integrally raised and rotated by the biasing force of the springs 35 and 35' through the connecting plate 27 ", so that the driving roller 20b and the fixed roller 20a are rotated. The disk D is completely sandwiched by and the disk D is guided by the reverse rotation of the drive roller 20b.
It is moved in the direction of the insertion slot 2 through 19b.

When the disc D is moved to a predetermined position, the detection switch 8 turns off the motor 31 to stop the movement of the disc D. In this state, when the disc D is pulled out from the insertion opening 2 and the opening / closing lid 5 is closed, the switch 7 is turned off, the plunger 41 is deactivated, the plunger arm 40 is returned and rotated, and the segment gear arm 38 is rotated by the spun ring 39. It is rotated in the direction of the support plate 27 by the biasing force, and the rack portion 38a is meshed with the small-diameter tooth portion 36b of the support plate rotation gear 36 to return to the original state.

In the above operation, when the support plate 27 is rotated upward by the engagement of the small-diameter tooth portion 36b of the support plate rotating gear 36 and the rack portion 38a of the segment gear arm 38, the pin 42 of the support plate 27 is segmented. Gear arm 38
It slides in the groove 38b, and the pin 42 faces the guide groove 38c in a state where the support plate 27 is lifted and rotated to the upper portion. When the plunger 41 is operated in this state, the segment gear arm 38 is rotated in the direction away from the support plate 27 via the plunger arm 40, and the rack portion 38a and the small-diameter tooth portion 3 of the support plate rotation gear 36.
The engagement with 6b is released.

In this example, the guide roller mechanism 19
Is simply provided for holding the attitude of the disk D, and therefore, a similar function can be achieved by a guide of another type such as a plate instead of this roller mechanism.

The disc player exemplified above is the disc D.
Is configured to be loaded while being stored in a storage case. The disc storage case 51 has a size such that the disc D is stored with its substantially half-periphery exposed, and the front half 5 thereof is accommodated.
1a is formed in a stepped shape with respect to the rear half portion 51b, and when not in use, the lid 52 is fitted to the thin front half portion 51a to conceal the disk D.

In order to load the disk D housed in the housing case 51 into the disk player, the lid 52 is removed from the housing case 51, and the insertion opening of the player housing 1 with the substantially half circumference of the disk D exposed. When it is inserted into 2, the front end portion pushes open the opening / closing lid 5, and the front half portion 51a of the storage case 51 is also inserted. The first half 5 of this storage case 51
When 1a is inserted into the insertion slot 2, it is pressed from both sides by its inner peripheral shape so that the upper and lower surfaces are swollen, and the upper and lower surfaces are separated from the disk D, and the disk D is released from the lock and removed. It becomes free, and it is conveyed by being sandwiched by the above-mentioned conveying device.

As described above, according to the present embodiment, the transport mechanism for the disc D is mounted on the support plate 27 which is rotatably supported by the frame 11 of the machine body, and the drive roller 20b for transporting the disc D by rotary contact is attached and driven. A motor 31 for rotationally driving the roller 20b and a support plate rotating gear 36 which is rotationally driven by the motor 31 and operates a descending mechanism for descending the support plate 27 to separate the drive roller 20b from the disk D are attached. , The support plate rotating gear 36 rotated by the motor 31 is attached to the frame 1
Rack portion 3 of the segment gear arm 38 arranged on the first side
8a is engaged according to the state where the disk D is conveyed to the required position, and the support plate 27 is moved downward to drive the drive roller 20b.
Is configured to be separated from the disk D, the control mechanism for the transport operation of the disk D can be easily configured, and the support plate 27 can be framed by the support plate rotating gear 36 and the rack portion 38a of the segment gear arm 38. 11
Since the support plate 27 does not inadvertently swing due to a shock or the like, the disc D can always be reliably transported.

Application Example The present invention can be applied to a recording / reproducing apparatus for various disc-shaped magnetic recording media such as a portable disk player for home use as well as a disk player mounted on an automobile.

EFFECTS OF THE INVENTION As described above, according to the present invention, the disc-shaped recording medium conveying mechanism includes the drive source for rotationally driving the drive roller for conveying the disc-shaped recording medium by rotational contact, and the disc-shaped recording medium at a predetermined position. Common to the drive source for moving the drive roller away from the disk-shaped recording medium in the state where the drive roller is conveyed to the frame, and the motor as the drive source is supported by the support plate rotatably on the frame side. Since it is configured so that the disc-shaped recording medium can be conveyed and loaded to a required position by a single mechanism block, the motor is attached to the frame side and an interlocking mechanism such as a gear mechanism or a belt mechanism is installed. The drive roller can be configured to be smaller than that in which the drive roller is rotationally driven. Therefore, if it is applied to the disc transfer device of the disc player, it can be installed in a small space, the space efficiency is improved, and the configuration is simplified and the number of parts is reduced, so that the cost can be reduced. Have.

[Brief description of drawings]

FIG. 1 is an external view of an example of a disc player to which the device of the present invention is applied.

FIG. 2 is an enlarged vertical cross-sectional view of a part of the same with a disc inserted therein.

FIG. 3 is a perspective view of an example of a disc player mechanism section including the device of the present invention.

FIG. 4 is a front view and a plan view of an example roller mechanism portion in the device of the present invention.

FIG. 5 is a side view of an example of the drive mechanism section.

6 is a sectional view taken along line AA of FIG.

FIG. 7 is a sectional view of a portion of a fixed roller portion of the same.

FIG. 8 is a perspective view of a chucking portion.

FIG. 9 is a sectional view illustrating the operation of the roller mechanism section.

FIG. 10 is a perspective view of an example of a storage case in which a disc transported by the device of the present invention is stored.

[Explanation of symbols]

 11 frame 20b drive roller 27 support plate 30 drive gear 31 motor 36 support plate rotating gear 38 segment gear arm 38a rack portion

Claims (1)

[Claims] 1. A disk-shaped recording medium carrying device having a driving roller for nipping and carrying the inserted disk-shaped recording medium, wherein the driving roller is attached to a support plate rotatably supported on the frame side, A motor and a gear for rotating the drive roller are attached to the support plate, and the state in which the disk-shaped recording medium is conveyed to a predetermined position by the drive roller with respect to the gear driven to rotate by the motor is detected by the detection means. A disc-shaped recording medium conveying device, characterized in that a rack which is engaged when detected is provided on the frame side, and the drive roller is lowered by the engagement of these racks.