JP2001056993A - Disk loading device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the damaging of a disk by surely transferring and loading a disk pulled in by a roller on a turntable. SOLUTION: A holding member 7 is rotatably supported, the transmission of rotation to a roller 2 is cut off after a disk 1 is pulled in by the roller 2, the disk 2 is rotated and lowered while being held between the roller 2 and the holding member, and then transferred and loaded on a turntable 10. Further, the position of a rotary support shaft 8 is set such that during its lowering while being rotated, the disk 1 is returned and moved away from a pickup 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc loading apparatus for a recording / reproducing apparatus using a disc-shaped recording medium such as a CD (hereinafter simply referred to as a disc).

[0002]

2. Description of the Related Art FIG. 8 shows a side surface of a main part of a so-called slot-in type disk loading apparatus for inserting a disk from the front, 51 is a disk, 52 is a roller for loading and discharging the disk, 61 is a guide member and 61 is an upper cover. 62
The disk is guided while sliding on the upper surface of the disk 51 which is fixed and inserted into the disk.

In the conventional disk loading apparatus constructed as described above, when the disk 51 reaches the retracting end position, the roller 52 descends and the disk 51 is placed on the turntable 59 and at the same time instantaneously a clamper (not shown). ) To clamp from above. Therefore, the disk 51 is free only on the roller 52 during the descent, and is unstable because the attitude and position of the disk are not determined. Especially in the vertical position of the device, the disk 51
Because of its own weight, displacement tends to occur as compared with the horizontal posture, so that it is necessary to arrange a position regulating member around the periphery. 5
3 is a roller holding arm, 54 is a roller shaft, 55 is a rotation support shaft of the roller holding arm 53, 57 is a kick spring for urging the roller 52 up and down, 58 is a chassis, 60
Is a pickup.

[0004]

SUMMARY OF THE INVENTION The present invention focuses on maintaining a stable posture and position until a roller is lowered and a disk is placed on a turntable to prevent displacement and damage to the disk surface. It is intended to provide various improvements regarding loading.

[0005]

SUMMARY OF THE INVENTION According to the present invention, a holding member is rotatably supported, and when a roller is lowered, a disk is held between the holding member and the roller, and the disk is lowered integrally.
After the disk was clamped on the turntable, the roller and the holding member were moved so that the disk could be separated from the disk and a gap could be secured. Also, the disk recording surface is separated from the pickup during the lowering of the rotation support shaft position of the holding member, the disk is slightly returned in the insertion direction, and the center hole of the disk is set closer to the center of the turntable. Positioning is ensured, and damage to the disk surface can be prevented.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is characterized in that a roller which is brought into contact with the lower surface of an inserted disk and driven by friction while rotating is provided on the opposite side to the roller with the disk interposed therebetween, and the upper surface of the disk is provided. A holding member that is guided while sliding, and a turntable that mounts and rotates the disk, and when the drawing of the disk by the roller comes to an end position, the disk is held by the roller and the holding member. The disk loading device is configured to be lowered onto the turntable while being held therebetween, so that the disk can be reliably mounted on the turntable without any positional displacement or impact.

According to a second aspect of the present invention, there is provided a roller holding arm which holds a roller and urges the roller upward to be rotatably supported, and a roller holding arm which is urged downward to be rotatable. 2. The disc loading device according to claim 1, further comprising: a holding member supported by a shaft, wherein the holding member holds the disc by a downward biasing force by pressing down a roller against the upward biasing force. In this state, the disk can be lowered toward the turntable together with the disk following the lowering of the roller, and the mechanism can be extremely simplified.

According to a third aspect of the present invention, there is provided a disk insertion detecting member for detecting the insertion of a disk, and a rod driven by the movement of the disk insertion detecting member to start meshing with the rack. 3. The disc loading device according to claim 1, wherein the roller is moved down by a movement of a rod generated when the disc loading device comes near.
The roller can be reliably lowered and raised simply by reciprocating the rod, and the disk can be reliably lowered and raised with a simple configuration.

According to a fourth aspect of the present invention, there is provided the disk loading apparatus according to the second or third aspect, wherein the roller is lowered by an inclined cam provided on a part of the rod. It can be minimized, a reliable operation can be obtained with a simple configuration, and the device can be made thinner and smaller.

According to a fifth aspect of the present invention, there is provided a disk insertion detecting member for detecting the insertion of a disk, and a rod driven by the movement of the disk insertion detecting member to start meshing with the rack. 5. The disk loading device according to claim 1, wherein the rotation of the roller is stopped in conjunction with the movement of the rod when the disk is approached, and the disk is immediately transmitted to the roller after the disk has been pulled. The transmission of rotational force can be cut off, without applying an excessive load to the motor driving the rollers, and without damaging the disk recording surface,
The use of a small motor makes it possible to make the device thinner and smaller.

According to a sixth aspect of the present invention, one gear in a roller driving gear transmission mechanism is supported on a gear mounting plate movable in a direction perpendicular to the moving direction of the rod, and the rod moves. The disk loading device according to claim 5, wherein the gear is disengaged by movement of a gear mounting plate interlocked with the gear, and the transmission of rotational force to the roller is interrupted, because the movement of one rod is used. The structure is simplified, and a delicate timing difference between the stop of the rotation of the roller and the lowering of the disk can be arbitrarily set, so that reliable disk loading can be realized.

According to a seventh aspect of the present invention, when the disk is placed on the turntable, the rotation center of the holding member is positioned so that the disk is separated from the pickup. The disk loading device is capable of avoiding damage to the disk recording surface due to collision between the lower surface of the disk and the pickup while the disk is being transferred and placed on the turntable by the roller and the holding member.

According to an eighth aspect of the present invention, when the disc is placed on the turntable, the holding member is positioned so that the disc center and the turntable center approach each other while the disc insertion tip returns. 3. The disk loading device according to claim 2, wherein the disk is separated from a disk contact member of an insertion detecting member when the disk is inserted, a stopper inserted into the device when the disk is inserted and retracted, and the like. Therefore, the amount of retreat movement of the insertion detection member and the stopper from the rotating disk outer peripheral portion can be made unnecessary or small, which contributes to simplification and downsizing of the configuration.

[0014]

1 shows an embodiment of the present invention, wherein 1 is a disk,
Reference numeral 2 denotes a roller which presses against the lower surface of the disk and draws and discharges the disk 1 in accordance with the rotation direction, 3 denotes a roller holding arm, 4 denotes a rotation support shaft of the roller holding arm 3, and 5 denotes the other end of the roller holding arm 3. The projection 6 provided is a torsion coil spring for urging the roller holding arm 3 clockwise to urge the roller 2 upward. Reference numeral 7 denotes a holding member which is on the opposite side of the roller 2 with respect to the disk 1 and which is in the process of being retracted.
Is guided while sliding. Reference numeral 8 denotes a support shaft that rotatably supports the holding member 7, 9 denotes a spring that urges the holding member 7 downward, 10 denotes a turntable on which the inserted and pulled-in disk 1 is placed and rotates, and 11 denotes a recording. A pickup for performing reproduction, 12 is a chassis, and 13 is an upper cover, which regulates the rising position of the holding member 7 against the pressing force of the roller 2. FIG. 2 shows that after the disk 1 is pulled in, the disk 2 is lowered while being held between the roller 2 and the roller holding arm 3, the disk is mounted on the turntable 10, and the roller 2 is lowered even after the disk is mounted. This shows that the roller 2 is separated from the lower surface of the disk 1 and the holding member 7 is separated from the upper surface of the disk 1 by the projection 5 to complete the mounting of the disk 1. In FIG. 3, reference numeral 14 denotes a disk insertion detecting arm, and reference numeral 15 denotes a rotation support shaft thereof, which moves as the disk is pulled in, and is located at positions 16 and 17 after the disk is mounted. Reference numeral 18 denotes a motor, and 19 denotes a worm gear fixed to the rotating shaft of the motor 18 for driving the pinion wheel 23 through the worm wheel 21 at a reduced speed. Reference numeral 20 denotes a gear formed integrally with the worm gear 19, which drives the belt wheel 24 through the intermediate gear 22 in a reduced speed. Reference numeral 25 denotes a gear mounting plate that supports the belt wheel 24 and moves to the left so that transmission of gears can be cut off. 26 is a gear mounting plate 25
Are biased rightward. 27 is a rod, 28
Is a rack provided on the rod 27, and starts to mesh with the rod 27 when the rod 27 moves forward. 29 and 30 are contact parts, 31
Is an inclined cam portion for pushing down the roller 2 provided at the tip of the rod 27, 32 is an engagement hole provided in the rod 27, 33 is a spring for urging the rod 27 backward, and 34 is a roller 2 for rotating the pulley gear 24. Is a contact portion for pushing down the roller 2, and the roller pushing down cam portion 31 comes in contact with the belt. A switch 39 turns off the power supply to the motor 18. FIG. 4 is a top view of the rod 27, and FIG.
Is an inclined cam for moving the gear mounting plate 25 to the left against the force of the spring 26, and engages with the projection 44 on the gear mounting plate. FIG. 6 is a top view showing a place where the pulley gear 24 is mounted on the gear mounting plate 25, and FIG.
Reference numerals 1 and 42 denote a fitting hole into which a guide pin (not shown) implanted on the chassis 12 fits and regulates the moving direction; 43, a spring engaging portion with which one end of the spring 26 is engaged; 45 is a gear portion of the pulley gear 24, and 46 is a pulley portion on which the belt 34 is engaged.

The operation of the disk loading apparatus configured as described above will be described with reference to FIGS.
The inserted disk 1 is frictionally driven by the roller 2 and pulled into the drawing end position while being sandwiched between the roller 2 and the holding member 7. At this time, the disc insertion detection lever 14
Is displaced while being pushed by the distal end of the disk 1 to be retracted, and when approaching the retracting end position, the distal end of the lever 14 pushes the contact portion 30 of the rod 27 to move the rod 27 forward. The rack 2 is moved to the pinion of the pinion wheel 23 driven by the motor 18 by the movement.
8 starts to engage, and thereafter, the rod 27
Begins to move forward. With this movement, the pulley gear 24 is moved so that its mounting plate 25
Is moved to the left by the engagement with the inclined cam 40, the meshing is disengaged, the transmission of the rotational force is interrupted, and the transmission of the rotational force to the roller 2 is stopped. At the same time, the movement of the rod 27 pushes down the roller pressing-down abutting portion 38 on the inclined surface of the roller pressing-down cam portion 31 provided at the tip of the rod 27, and urges the roller 2 together with the roller holding arm 3 to the roller upper direction. Press down against the force of spring 6. The disk 1 is lowered while being sandwiched between the rollers 2 by the force of a spring 9 that urges the holding member 7 downward, and is transferred and placed on the turntable 10. The roller 2 is further depressed by the depressing cam portion 31 to be separated from the lower surface of the disk 1, and the projection 5 provided at the other end pushes up the holding member 7 by the rotation of the roller holding arm 3, and the roller 2 is moved from the upper surface of the disk 1. Release (Figure 2). The loading of the disc 1 on the turntable is completed in this manner, but the movement of the rod 27 immediately before the completion of the loading causes the disc insertion detecting lever 1 to move.
The other end of 4 is pushed and rotated by the contact portion 29 to be separated from the leading end of the disk 1, comes to the position of 16 in FIG. 3, and the switch 39 is turned off to cut off the power supply to the motor 18.
The driving of the rod 27 by the motor 18 is also stopped (FIG. 3).

The disk 1 is held by the holding member 7 and the roller 2
During the descent in the state where the disk 1 is held, the holding member 7 rotates clockwise around the support shaft 8, so that the disk 1 at the end of retraction rotates so that the leading end thereof is separated from the pickup 11, The recording surface of the disk 1 does not come into contact with the pickup 11 and is not damaged. At the same time, the tip of the disc 1 can be placed on the turntable 10 while being aligned with the return movement in the insertion direction, so that the tip of the disc 1 is separated from the stopper (not shown) of the disc implanted and fixed to the insertion destination. Alternatively, the amount of movement of the retractable movement stopper can be reduced.

[0017]

As described above, according to the present invention, the disk can be placed on the turntable while being held between the roller and the holding member, and the disk does not fluctuate or become unstable. Even when using a vertical type, it can be reliably transferred to a turntable. Also, when transferring to the turntable, the rotation support shaft position of the holding member, the tip of the disk is separated from the pickup, the insertion position regulating stopper fixed and fixed, and separated from the retractable movable stopper, the disk Since the disc center hole can be aligned with the turntable center while returning, the stopper does not need to be moved after the disc is mounted, or the amount of movement can be reduced. In addition, since the transmission of rotational force to the rollers is stopped when the draw-in of the disc is completed, the drive for pulling out the disc is continued forever, and the use of a motor with low power does not damage the disc surface or overload the motor. And the device can be made thinner.

[Brief description of the drawings]

FIG. 1 is a side view of a main part of a disk loading apparatus according to an embodiment of the present invention, showing a state where a disk is being retracted.

FIG. 2 is a side view of a main part when the disc is mounted.

FIG. 3 is a top view of the main part.

FIG. 4 is a top view of a rod.

FIG. 5 is a side view of the same.

FIG. 6 is a top view showing a pulley gear on a gear mounting plate.

FIG. 7 is a front view of the same.

FIG. 8 is a side view of a main part of the conventional disk loading device showing a state where the disk is being retracted.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Disc 2 Roller 3 Roller holding arm 7 Holding member 8 Support shaft 10 Turntable 11 Pickup 14 Disk insertion detection arm 27 Rod 28 Rack 31 Inclined cam part

Continued on the front page (72) Inventor Takeshi Hashida 8-1, Koshincho, Takamatsu-shi, Kagawa F-term (reference) in Matsushita Hisashi Denshi Kogyo Co., Ltd. 5D046 CB03 EA14 FA04 FA17 HA08

Claims (8)

[Claims] A roller that frictionally drives while rotating against the inserted lower surface of the disk, and a holding member that is on the opposite side of the roller with respect to the roller and that is guided while the upper surface of the disk slides; A disk loading device configured to lower the disk on a turntable while holding the disk between the roller and the holding member when the roller has reached the end position of the disk being pulled in. 2. A roller holding arm which holds a roller and urges the roller upward and is rotatably supported by a roller, and a holding member which is urged downward and is rotatably supported by a rotation. The disk loading device according to claim 1, further comprising: 3. A disk insertion detecting member for detecting insertion of a disk, and a rod driven by the movement of the disk insertion detecting member to start meshing with a rack. 3. The disk loading device according to claim 1, wherein the roller is lowered. 4. The disk loading device according to claim 2, wherein the roller is lowered by an inclined cam provided on a part of the rod. 5. A disk insertion detecting member for detecting insertion of a disk, and a rod driven by the movement of the disk insertion detecting member and starting to engage with a rack, wherein the movement of the rod caused when the disk comes near the retracting end position. Interlock,
5. The method according to claim 1, wherein the rotation of the roller is stopped.
The disc loading device as described in the above. 6. A gear mounting plate for a roller driving gear is supported on a gear mounting plate movable in a direction orthogonal to the moving direction of the rod, and the gear mounting plate is moved in conjunction with the movement of the rod. 6. The disk loading device according to claim 5, wherein the gears are disengaged and the rotation transmission to the rollers is interrupted. 7. The disk loading device according to claim 2, wherein when the disk is placed on the turntable, the rotation center of the holding member is in a positional relationship such that the disk is separated from the pickup. 8. The rotation center of the holding member according to claim 2, wherein when the disk is placed on the turntable, the rotation center of the holding member is in a positional relationship such that the disk center and the turntable center approach each other while the disk insertion tip returns. Disk loading device.