JPS60138766A - Disc form recording medium carrier - Google Patents

Abstract

PURPOSE:To prevent adhering of dust and damage to be inflicted upon a disc face and to attain ease of positioning guide by making a couple of rollers carrying the disc while clipping it small at its center part diameter and the diameter increased gradually toward both sides. CONSTITUTION:When the disc is pushed between rollers 19a, 19 of a guide roller mechanism 19, the roller 19b is moved downward via an arm 23, the disc is inserted while the part between both the rollers is extended, and when the disc reaches rollers 20a, 20b of a drive roller mechanism 20 placed at the post stage of the mechanism 19, an optical switch placed at the position is turned on and a motor 31 is driven forward. The disc face is not brought into contact at all with the rollers while the edge is contacted in spiral to the rollers 19a-20b in carrying the disc while being clipped by forming the rollers of the mechanisms 19, 20 in making their diameter large gradually from the center toward both side directions.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a disc-shaped recording medium conveying device for a player of a disc-shaped recording medium, such as a digital audio compact disc.

Background Art and Problems Compact disc players (hereinafter referred to as CD players) use a built-in carrier for loading discs, for example, a system in which the disc is placed on a pull-out disc table and loaded. However, this method requires a space in front of the player body to pull out the disc table, which causes space problems, especially when installing a CD player in a car or the like. Because of this problem, it is desirable to implement a slot-in method in which the disk 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, the amount of movement of the disk can be freely set. Moreover, when loading a disk, the disk must be inserted while being held by the disk with fingers, which may stain or damage the disk surface.

In addition, the guide roller method generally uses a pair of rollers and transports by inserting a transport plate between them, which is widely used, but since the rollers have the same diameter throughout, the entire surface of the transport plate Therefore, there is an inconvenience that dust is likely to adhere to the surface of the conveyor plate and it is easily scratched by the rolling contact of the rollers. In order to solve this problem, there is a device that uses rollers to hold only the edges of the conveyor plate for conveyance, but this requires the conveyor plate to have a certain degree of stiffness, and the so-called stiff conveyor plate results in uneven feed. There is a risk of damage, and a feed roller that contacts only this edge cannot be used for a disk-shaped conveyor plate.

Therefore, this double-roller transport mechanism cannot be used as a disc transport mechanism for a disc player because it may cause dust to adhere to or scratch the disc surface, and it is impossible to transport the disc.

Purpose of the Invention In view of the above, the present invention provides a disk-shaped recording medium conveying device that is capable of conveying a disk-shaped recording medium by pinching only the peripheral portion of the disk-shaped recording medium symmetrically between a pair of rollers. It provides:

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a disc-shaped recording medium conveying device having a pair of rollers that sandwich and transport an inserted disc-shaped recording medium, the pair of rollers having a diameter smaller in the center. It is formed into a tapered shape whose diameter gradually increases in the direction of both sides, so that it is rolled into contact only with the periphery of the inserted disc-shaped recording medium, so as to prevent staining or damage on the surface of the recording medium. This is what I did.

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

In the figure (11 indicates the case of the compact disc,
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, and an opening/closing lid (5) is fitted inside the insertion slot (2). is attached so that it can be pushed open by a disc D. This opening/closing lid (5) is locked by the locking mechanism (6) in the closed state, and when pressed from the outside and slightly rotated inward in this closed state, the locking mechanism (6)
is operated to release the lock and open the opening/closing lid (5).

(11) is a frame installed inside the case (1), on which the chassis (12) is fixed horizontally;
A spindle motor (13) is attached to the center of the spindle motor (12), and a kerf (14) is formed from near the rear corner toward the center, that is, toward the spindle motor (13). 14) along which the optical pink amplifier (15) is moved. In addition, a chucking arm (16) is pivotally supported on the rear side of the chassis (12) so that it can be raised and lowered, and is always biased in the direction of collapse by a spring (17). ) A chucking disk (18) is rotatably attached to the tip of the spindle (13) in correspondence with the spindle (13). Further, a guide roller mechanism (19) and a drive roller mechanism (20) for loading the disk D 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 consists of a fixed guide roller (19a) and a movable roller (19b), and the fixed guide roller (19a) has a bearing (21) (21') fixed to the tip of the frame (11). The movable kite roller (19b) is pivotally supported via a shaft (22a) on the frame (11) so as to be rotatable in the vertical direction, and the arm (23) (2
The guide rollers (19a and 19b) are rotatably supported at the tip of the guide roller 3' via a shaft (22b), and are vertically opposed to each other so as to be movable toward and away from each other.

A drive roller mechanism (20) is provided opposite to the guide roller mechanism (19) configured as described above at a required interval.
consists of a fixed roller (20a) and a driving roller (20b), and the fixed roller (20a) is supported via a shaft (25a) on a bearing (24) (24') fixed to the frame (11), and is driven. The roller (20b) is connected to the frame (11
) is moved vertically with respect to the roller drive mechanism (26
) and is rotationally driven by a fixed roller (20
It is moved toward and away from a). The rollers (19a), (19b) and (20a) of the guide roller mechanism (19) and drive roller mechanism (20) configured as described above are
) (20b) has a small diameter at the center, gradually increases in diameter toward both sides, and has the same diameter at both ends.

That is, as shown in FIG. 4, the rollers (19a) (19
b) (20a) (20b) is the central part (19at
) (19bt ) (20a1) (20bt ) diameter di and both ends (19a2) (19b2) (20a
2) If the relationship with the diameter d2 of (20b2) is dl<d2, and the total length of the roller is l, the length of the center part is N1, and the length between the inner sides of both ends is 12, then β≧12>11≧ 0, and both sides are symmetrical with respect to the feed center a, and furthermore, if the thickness of the disk D is t, then d2 d1≧'A
The condition is that t.

Rollers (19a) (19b) formed in this way
) and (20a) and (20b) are brought into contact with each other, thereby creating a gap in the center, and a gap that tapers in both directions from this gap.

Each roller has a surface made of a suitable elastic material such as rubber or soft plastic, and has shafts (22a) and (22b).
(25a) and (25b) are formed integrally with the roller or are adhered to the roller and are rotated together.

Next, the roller drive mechanism (26) will be explained with reference to FIG.

(27) (27') is a support plate that is rotatably supported in the vertical direction by a shaft pin (2B) (28') on both sides of the front part of the frame (11), and is connected by a connecting plate (27''). A bearing (29) (2
9') is fixed, and a driving roller (20b) is mounted on this bearing.
Both ends of the shaft (25b) are supported through the shaft (25b), and this shaft (25b)
A gear (30) is fixed to the protrusion on one end side of (25b), that is, the side that is pivotally supported by one of the support plates (27).
The motor (31) is interlocked via the gear (32) fixed to the shaft (31a) of the motor (31) attached to the The driving force of 31) is transmitted to the driving roller (20b). That is, the gear (30) fixed to the drive roller (20b) (hereinafter referred to as the drive gear) and the intermediate gears (33) and (34) have large diameter teeth (30a) and (33).
a) (34a) and small diameter tooth portion (30b) and (33
b) (34b), and the gear (34b) of the motor (31)
32) is the large diameter tooth portion (33a) of the first intermediate gear (33).
), and the small diameter tooth portion (33b
) and the large-diameter tooth portion (34a) of the second intermediate gear (34) mesh with each other, and the small-diameter tooth portion (34b) of the second intermediate gear
The large-diameter tooth portion (30a) of the drive gear (30) meshes with the drive gear (30), and the drive force is transmitted to the drive roller (20b) as described above. The support plates (27) (27') are then rotationally biased upward by springs (35) (35') so that the driving roller (20b) is brought into pressure contact with the fixed roller (20a). Also, one support plate (27
) is pivotally supported by a support plate rotation gear (hereinafter referred to as rotation gear) (36), which also has a large diameter ridge (36).
a) and a small diameter tooth portion (36b), and this large diameter tooth portion (36b).
a) is meshed with the small-diameter tooth portion (30b) of the drive gear (30), and the small-diameter tooth portion (36b) is attached to the frame (11) in correspondence with the tip end side of the support plate (27). The rank portion (38a
), and this segment gear arm (38
) is rotationally biased toward the support plate by a spring (39). A pin (40a) protruding from one end of a plunger arm (40) pivotally supported at a central fulcrum on the frame (11) is engaged with the segment gear arm (38), and the plunger arm (40) The other end is connected to a plunger (41).

Further, a groove (38b) is formed on the inner surface side of the segment gear arm (38) substantially parallel to the rank portion (38a).
A guide m (38c) is formed from the upper part of this groove (38b) to open wide in the direction of the rank part (38a), while a guide groove (38c) is formed on the tip surface of the support plate (27).
The retaining pin (42) is engaged and slid into the groove (38b).
is installed protrudingly. Furthermore, an arm (2) that pivotally supports a movable guide roller (19b) is mounted on both support plates (27) (27').
3) The retaining piece (27a) engaged with the upper edge side of (23')
) (27a') protrudes, and the arm (23
) is then rotated upward by a spring, etc., and the upper edge side is engaged with the retaining piece (27a) (27a'), and moves downward as the support plate (27) (27') rotates downward. Although it is rotated, it can independently rotate downward without being associated with the support plate (27). Further, when the support plate (27) (27') is rotated upward, this arm (23) (23') is positioned upward, and the movable guide roller (19b) is in contact with the fixed guide roller (19a). It is done like this.

Moreover, a retaining piece (
27b) is provided protrudingly, and this engagement piece (27b) pivotally supports the intermediate portion (43a) on the frame (11), and the one end portion (43b)
) is engaged with the other end (43c) of the connecting arm (43) which is formed by engaging the lower surface side of the chunking arm (16).

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

First, insert the disc D into the player case (front panel 11 (4)
) When the opening/closing lid (5) attached to the insertion slot (2) is pushed by the disk D, the switch disposed in the lid locking mechanism (6) is linked to the opening/closing operation of the opening/closing lid (5). (7
) is turned on, the plunger (41) operates, the plunger arm (40) is rotated, and the lid opening/closing mechanism (5) is interlocked with the lid locking mechanism (6) (not shown).
It is fully opened by. On the other hand, the plunger arm (40)
Due to the rotation, the segment gear arm (38) is rotated in a direction away from the support plate (27) against the biasing force of the spring (39), and the rank part (38a) and the support plate (27) are rotated.
) is disengaged from the small-diameter tooth portion (36b) of the rotation gear (36) and held in this state.

Next, when the disk D is pressed between the rollers (19a) and (19b) of the guide roller mechanism (19), the movable guide roller (19b) is moved downward via the arm (23), and the space between the two rollers is expanded. The disc D is inserted and passes through the guide roller mechanism (19) to the roller (20a) of the drive roller mechanism (20) located behind it.
) (20b) (Fig. 9A), the optical switch (8) placed at this part switches on the ontonary motor (3).
1) is rotated forward. The driving force of this motor (31) is transmitted from a gear (32) fixed to a motor shaft (31a) to a drive roller (20b,) via intermediate gears (33) (34).
is transmitted to the gear (30) fixed to the shaft (25b) of
The drive roller (20b) rotates in the feeding direction of the disk D (the direction indicated by the arrow in FIG. 9A), and the drive roller (20b) rotates in the direction indicated by the arrow in FIG. 9A.
As a result of the rotation against the biasing force caused by step 5), it is moved slightly downward and is then sandwiched between the fixed rollers (20a) and transported to a predetermined position (FIG. 2B). In this state, the disk D is connected to the switch (9) located at the rear end of the chassis (12).
) and turns off the circuit of the plunger (41), so the plunger arm (40) returns to rotation and the segment gear arm (38) contacts the spring (3
9), and the rack portion (38a) meshes with the small diameter ridge portion (36b) of the rotation gear (36).

Therefore, the support plate (27) is moved by the spring (
35) against the upward biasing force, begins to rotate downward around the pivot supported by the pivot pin (28), and this downward pivoting action connects the engagement piece (27b) of the support plate (27). The connecting arm (43) is engaged with the other end (43c) of the arm (43), and as a result, the connecting arm (43) is rotated downward with the downward rotation of the support plate (27) and pushed by the chucking arm (16). The increase will be lifted. Therefore, the chucking arm (16) is moved by the biasing force of the spring (17), and the chucking plate (18) attached to the tip of the chucking arm (16) is moved by the biasing force of the spring (17).
) corresponds to the center of the disk D, and at this time, the drive roller (20b) is moved downward as the support plate (27) is rotated downward while continuing to rotate, and the movable guide roller (19b) ) is also moved downward as the arm (23) is rotated in one direction together with the support plate (27) via the retaining piece (27a), and the disk D is lowered in a horizontal state and its center A chucking disk (18) comes into contact with the portion, and the spindle motor (13) is chucked onto the spindle motor (13).

The support plate (27) rotates downward to the chucking operation completion position, and the chucking arm (16) and the connecting arm (
43) When an appropriate gap is created between the retaining ends of the other end (43c) 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, This support plate (27) operates the loading completion switch α0) and stops the motor (31).

When the loading is completed as described above, the disk D is chucked onto the spindle motor (13) by the chucking ff1 (18) of the chucking arm (16), and the drive roller (20b) and movable guide roller (19b) is held in a state where it is lowered and separated from the lower surface side of the disk D, and the disk D is optically pinked up (15).
playback is performed.

Next, when ejecting the disk D from the chucked state, when the eject operation button is pressed, the motor (31) is turned on in reverse, and the reverse operation of the disk D feeding and chucking operation described above is performed.

Immediately, when the motor (3I) is turned on in reverse, the drive roller (2
0b) rotates in the reverse direction, the rotation gear (36) of the support plate (27) also rotates in the reverse direction, and its small diameter tooth portion (36b) rotates in the opposite direction relative to the rank portion (38a) of the segment gear arm (38). As a result, the support plate (27) is rotated upward around the shaft support, and with this movement, the connecting arm (
43) is released from being pressed down by the retaining piece (27b) of the support plate (27) and is rotated upward by the biasing force of the spring (44), and accordingly, the chucking arm (16)
) is raised 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) is also supported while being rotated in the opposite direction, and is moved upward via the drive roller (27) to push up the disk D and nip it again between the fixed roller (20a). Also, at this time, the guide roller mechanism (19
Since the movable guide roller (191+) of the arm (23) is released from being pressed down by the support plate (27), it is moved upward by the biasing force of the spring, and the movable guide roller (191+) of 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 transferred forward and separated from the switch (9) at the rear end of the chassis, this switch (9)
turns on, the plunger (41) operates, the plunger arm (43) rotates, and the segment gear arm (38)
The support plate (27) resists the biasing force of the spring (39).
Rotate the rank part (38a) in the direction away from the
is separated from the small diameter tooth portion (36b) of the rotation gear (36). Therefore, the support plate (27) can rotate freely, and both the support plates (27) (27') are raised integrally by the biasing force of the springs (35) (35') via the connecting plate (27''). The drive roller (20b) and the fixed roller (20a) completely sandwich the disk D, and the drive roller (20b) reverses its rotation so that the disk D is inserted between the guide rollers (19a) and (19b). It is moved towards the mouth (2).

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, the plunger (41) becomes inactive, and the plunger arm (40) returns to its original position. The segment gear arm (38) is rotated toward the support plate (27) by the biasing force of the spring (39), and the segment gear arm (38) is rotated in the direction of the support plate (27).
38a) is meshed with the small diameter tooth portion (36b) of the rotation gear (36) and returns to its original state.

In the above operation, the support plate (27) is rotated by the rotation gear (36).
) and the small diameter crest (36b) of the segment gear arm (3
When rotated upward due to engagement with the rack part (38a) of 8), the pin (42) of the support & (27) slides within the groove (38b) of the segment gear arm (38). With the support plate (27) rotated upward to the top, the pin (42) faces the guide groove (38c). By operating the plunger (41) in this state, the segment gear arm (38) moves the plunger arm (4o
) is rotated in a direction away from the support plate (27), and its rank Off (38a) and the rotation gear (36) are rotated in a direction away from the support plate (27).
The meshing with the small diameter tooth portion (36b) is released.

Note that in this example, a guide roller mechanism (19) is provided on the rib to maintain the attitude of the disk D, so instead of this roller mechanism, other types of guides such as a plate-shaped guide can perform the same function.

Further, the drive roller mechanism (2o) of this example has a drive roller (20
b) The fixed roller (20a) is moved by the support plate (27).
The drive roller (20b
) may be pivoted to the frame (11) and driven by a motor.

The disc player illustrated above is configured to be loaded with the disc D stored in the storage case.

This disk storage case (51) is large enough to store the disk D with approximately half its circumference exposed.
1a) is formed stepwise and thinner than the rear half (51b), and when not in use, a lid (52) is fitted to the thin front half (51a) to hide the disc D.

The disk D stored in the storage case (51) in this way
To load the disc player into the storage case (51)
When the lid (52) is removed from the disc D and approximately half of the circumference of the disc D is exposed, the disc D is inserted into the insertion slot (2) of the player case (1).The tip of the disc D pushes open the opening/closing lid (5) and opens the storage game (52). The first half (51a) of 51) is also inserted. When the front half (51a) of this 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 they are separated, the disk D is unlocked and can be taken in and taken out freely, and is held and conveyed by the above-mentioned conveyance device.

In this example configured as described above, each roller of each roller mechanism (19) (20) is formed to have a diameter that gradually increases from the center to both sides, so when the disk D is sandwiched and transferred, the disk D is moved by the rollers ( 19a) (19b) (20
a) (20b), its edge portion only contacts in a spiral manner, and the disk surface does not come into contact with the roller at all, so there is no risk of damage to the disk surface or adhesion of dust or the like. Further, since the disk D is sandwiched between the rollers so as to be biased toward the center thereof, the positioning guide becomes extremely easy, and there is no risk of swinging during transfer, so that the disk D can be transferred very stably.

Historically, the drive roller mechanism (20) has few movable parts, and it is only necessary to move the rollers in a range that is approximately equal to the vertical rocking movement of the disk D, and it is sufficient to rotate only one roller. Therefore, the arrangement space can be reduced, and the distance for feeding the disc D can be increased, so that restrictions on the design of the disc player can be resolved.

Application Examples The present invention can be applied to recording and reproducing devices for various disc-shaped recording media, such as disc players installed in automobiles and the like, as well as portable disc players for home use.

Effects of the Invention As described above, according to the present invention, the pair of rollers that sandwich and convey the disk-shaped recording medium are formed to have a small diameter at the center and gradually increase in diameter toward both sides. A gap is created that gradually narrows from the center to both sides, and when a disc-shaped recording medium is inserted into this gap, only the circumferential edge of the disc contacts the circumferential surface of the roller in a spiral manner as it rotates, and the front and back sides of the recording medium are separated. Both sides do not come into contact with the circumferential surface of the roller at all, so there is no risk of dust adhesion or damage, and the recording medium is conveyed between the rollers while being urged toward the center as the rollers rotate. Because of this, it can be transported reliably and smoothly to a specified position in a stable state without shaking even if vibrations are applied from the outside, and is especially suitable for transporting discs in disc players used in locations subject to vibrations, such as those installed in automobiles. The effect is great when applied to equipment.

[Brief explanation of drawings]

Fig. 1 is an external perspective view of an example of a disc player to which the device of the present invention is applied; 4A and 4B are a front view and a plan view of an example of the roller mechanism in the apparatus of the present invention, and FIG. 5 is a side view of an example of the drive mechanism,
Fig. 6 is a sectional view taken along line 1-1 in Fig. 5, Fig. 7 is a sectional view of a portion of the fixed roller section, Fig. 8 is a perspective view of the chucking section, and Fig. 9 is an operation of the roller mechanism section. A cross-sectional view explaining
FIG. 10 is a perspective view of an example of a storage case that stores a disk that is generally fed by the apparatus of the present invention. In the figure, (11) is the frame, (19) is the guide roller mechanism, (19a) (19b) is the roller, (20)
(20a) and (20b) are rollers, (23) is an arm, (27) is a support plate, (30) is a drive gear, and (31) is a motor.

Claims (1)

[Scope of Claims] 1. In a disc-shaped recording medium conveying device having a pair of rollers that sandwich and transport an inserted disc-shaped recording medium, the pair of rollers has a small diameter at the center and a diameter at both sides. A disk-shaped recording medium conveying device characterized by having a diameter that gradually increases in the direction. 2. The disk-shaped recording medium conveying device according to claim 1, wherein the pair of rollers have a tapered shape, and the diameter gradually increases from the center toward both sides.