JP3903003B2 - Roller for loading disk unit - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a roller for carrying a disk into the disk apparatus.
[0002]
[Prior art]
The disk device records and reproduces information while rotating a disk such as a CD or a DVD mounted on the turntable. There are various methods for mounting the disk apparatus on the turntable. The typical method is a method of inserting into the apparatus main body by placing it on a tray that moves forward and backward, and when a part of the disk is inserted from the insertion port, a loading device that is provided inside the apparatus and can be pulled in, There is a method of pulling it to a predetermined position and attaching it to the turntable.
[0003]
The disk device targeted by the present invention is a type of disk carry-in device that is mounted on a turntable by the latter method. This disk device is only provided with a thin insertion slot on the front panel, and a part of the disk is inserted through the insertion slot, so that the disk apparatus is loaded and mounted. Therefore, as a conventional disc carry-in device, a “CD player loading device” according to Japanese Patent Laid-Open No. 2-7263 is known.
[0004]
The “CD player loading device” is arranged on the player main body so as to be opposed to each other at a predetermined distance, and each of the first and second belt mechanisms for loading a disc is rotatable, Belt mechanism opening / closing means for rotating each of the belt mechanisms in a predetermined direction when loading the disk, and at least one of the first and second belt mechanisms removes the belt constituting the belt mechanism as needed. A loading motor that rotates in a predetermined direction is provided.
[0005]
Further, instead of the first belt and the second belt, there is a method in which a plurality of rollers are provided on the left and right sides of the insertion slot, the disc is sandwiched between these rollers, and the disc is carried in by rotation of the roller. When a disc is sandwiched and carried by a roller, it is necessary that the recording surface of the disc is not damaged, and at the same time, the roller needs to be brought in securely with improved adhesion to the disc. Of course, it is necessary to prevent slippage and abnormal noise between the disk and the roller.
[0006]
Incidentally, a roller provided in a “disc player” according to Japanese Patent Laid-Open No. 63-298761 is known as a carry-in roller for a conventional disc device. However, the roller is configured to be brought into contact with the recording surface of the disc, and there is a risk of scratching the recording surface. Accordingly, it is preferable that the carry-in roller is configured to be carried into the apparatus by rotating not on the recording surface but on the outer periphery of the disk.
[0007]
FIG. 7 shows a conventional roller for carrying the disc into the apparatus by rotating against the outer periphery of the disc. The roller is an elastic roller made of rubber or the like, and can be rotated in close contact with the outer periphery of the disk without being scratched, so that the disk is reliably and stably loaded. (A) of the figure shows the appearance of the roller (a), (b) shows the cross section of the roller (a), and (c) shows the case where the roller (a) is attached to the main body (b).
[0008]
FIG. 8A shows the case where the roller body (b) is attached to the shaft (c), and (b) shows the case where the disk (e) hits the roller outer periphery (d) and deforms. The roller (a) is attached to the main body (b) and has a space (f) in between. Therefore, if the disk (e) hits the outer periphery, it can be deformed as shown in (b) and become familiar with the disk outer periphery (d). As a result, the contact area with the outer periphery (d) of the disc increases, and the disc (e) can be carried into the apparatus if the roller (a) rotates while maintaining a stable adhesion.
[0009]
However, because of the space (f) formed between the main body (b) and the disk (e), the roller (b) is easily deformed as shown in (b), and the contact area with the disk The contact pressure is not high. Rather, since it is low, the frictional force generated between the disk and the outer periphery of the disk becomes small, and slipping occurs between the disk and the disk even if the roller (a) rotates. Further, the roller (b) is greatly depressed and deformed, so that the vertical position of the disk (e) is not stabilized, the stability of loading the disk (e) is impaired, and the mounting to the turntable is hindered. That is, an unreasonable force acts in the axial direction when a disc (e) that is not in a fixed position is mounted on the turntable.
[0010]
And to attach the roller (b) to the main body (b) having the collar (g) on both sides (g), it must be a split mold, and the mold for forming the roller (b) is also Multiple. Furthermore, only one roller (a) can be molded one by one, resulting in low productivity and high cost. On the other hand, when a rotational drive force is applied to the roller (b) attached to the main body (b), not only does it slip with the disk outer periphery (d), but also slips with the main body (b). As a result, the loading operation may be hindered.
[0011]
[Problems to be solved by the invention]
Thus, the conventional carry-in roller has the above-described problems. The problems to be solved by the present invention are these problems, which increase the contact pressure with the disk to eliminate slipping, enable stable loading, and prevent wear of the rollers to improve durability, Provides a roller for carrying in that improves the productivity of the roller and simplifies the work of mounting on the shaft.
[0012]
[Means for solving the problems]
The carrying-in roller of the present invention is manufactured by folding a cylindrical tube. And a convex part is formed in the outer periphery of a cylindrical tube, and this convex part becomes a roller which supported the outer peripheral part and formed the space between the axial part and the outer peripheral part when the tube was turned up. Then, by folding back, the center of the outer peripheral surface of the outer peripheral portion is slightly recessed, and the disk outer periphery hits the recessed groove and is positioned. That is, the position of the disk is not recessed by contacting the outer periphery of the disk as in the prior art, but the disk is positioned in the vertical direction by forming a recessed groove in advance. Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings.
[0013]
【Example】
FIG. 1 shows a case where a part of a disk 4 is inserted into an insertion port 3 provided in a front panel 2 of the disk device 1. If a part of the disc 4 is inserted into the insertion port 3 of the disc device 1, it is pulled in by the built-in loading device and mounted on the turntable. And when taking out, it is discharged | emitted from the insertion port 3 with the same carrying-in apparatus.
[0014]
FIG. 2 shows an embodiment of a disk carry-in device according to the present invention. A first drive roller 5 is attached to a fixed position of the chassis on the left side of the insertion port 3, and an arm 6 that swings about the axis of the first drive roller 5 is provided. A drive roller 7 is attached. A first gear 8 is attached concentrically to the first drive roller 5, and a second gear 9 is attached concentrically to the second drive roller 7.
[0015]
If the intermediate gear 10 is interposed between the first gear 8 and the second gear 9 and meshes with the arm 6 and the first driving roller 5 is rotationally driven by a predetermined motor, the first gear is provided. 8, the second drive roller 7 rotates via the intermediate gear 10 and the second gear 9. Further, since the second driving roller 7 is attached to the tip of the swinging arm 6, the position of the second driving roller 7 is changed by the swinging of the arm 6. That is, according to the position of the disk 4 inserted from the insertion port 3, the arm 6 can swing so that it can contact the outer periphery of the disk.
[0016]
On the other hand, on the right side of the insertion port 3, the first roller 11 is rotatably supported by the slider 13, and the second roller 12 is also rotatably supported by the slider 13. The slider 13 can move outward along a guide groove (not shown). That is, according to the position of the disk 4 inserted from the insertion port 3, the slider moves outward so that the first roller 11 and the second roller 12 can contact the outer periphery of the disk.
[0017]
A right link 14 is attached to the slider 13 and extends to the insertion port side (center side). Another left link 15 is connected to the arm 6 and is rotatable about a shaft 16. The front end of the right link 14 and the front end of the left link 15 are connected to both ends of the middle link 17. Since the right link 14 extends from the slider 13 and does not swing, the connecting pin 19 of the middle link 17 is loosely fitted in an elongated hole 18 formed at the tip.
[0018]
By the way, if the disk 4 is inserted from the insertion port 3, the outer periphery of the disk 4 comes into contact with the first drive roller 5 and the first roller 11 as shown in FIG. 2. A sensor senses that the disc 4 has been inserted from the insertion port 3, and the first driving roller 5 is rotated by a motor. The rotation direction is a direction in which the disk 4 is drawn into the inside. If the disk 4 is further pressed from the near side, the disk 4 is drawn into the inside.
[0019]
Here, as the disk 4 enters from the insertion port 3, the distance between the first drive roller 5 and the first roller 11 increases, so the first roller 11 moves outward together with the slider 13. However, the spring force is urged so that the first roller 11 is always in contact with the outer periphery of the disk. The means for biasing the spring force is not limited. When the slider 13 is directly biased, a coil spring is attached to the shaft 16 of the middle link 17 so that the middle link 17 is rotated clockwise. In the embodiment shown in the figure, a coil spring 20 is connected between the left link 15 and the right link 14.
[0020]
Then, if the disk 4 further enters, it moves to the back side and comes into contact with the second driving roller 7 on the left side and the second roller 12 on the right side. That is, the disk 4 is sandwiched between four rollers, the first driving roller 5 and the second driving roller 7, and the first roller 11 and the second roller 12, and the first driving roller 5 and the second driving roller 7 rotate together. By driving, the disk 4 is carried into the back side. If it reaches at least this position, it can be carried in alone without having to press the back of the disk by hand.
[0021]
In FIG. 2, the state of being sandwiched by four rollers is not shown, but the disk 4 reaches the position of the turntable by being drawn further from this state. By the way, the first driving roller 5, the second driving roller 7, the first roller 11, and the second roller 12 are in contact with the outer periphery of the disk so that the disk 4 can be reliably carried into the apparatus. ing.
[0022]
FIG. 3 (a) is an embodiment showing the roller of the present invention, and FIG. 3 (b) is a cylindrical tube serving as the roller. This cylindrical tube is folded back to become the roller shown in FIG. 4A. The cylindrical tube is composed of a shaft portion 21 and an outer peripheral portion 22, and the outer peripheral portion 22 is folded back. Rings 23 and 23 protrude along the outer periphery of the shaft portion 21 at a predetermined distance, and the outer peripheral portion 22 that is turned back covers the rings 23 and 23 to form the roller shown in FIG. .
[0023]
The outer peripheral portion 22 is thin so that it can be easily folded back, but a groove 24 is formed on the outer periphery of the roller that is folded back. In other words, the outer peripheral portion 22 covers both the rings 23, 23, but the space between both the rings 23, 23 is not supported, so that it shrinks to form a recessed groove 24. The outer periphery of the loaded disc is positioned by fitting into the groove 24.
[0024]
FIG. 4 shows another embodiment of the cylindrical tube constituting the roller, and a groove 25 is formed between the shaft portion 21 and the outer peripheral portion 22 to be turned back so that it can be turned back easily. And the roller comprised by folding | wrapping exhibits the external appearance shown to the said (a) of FIG. FIG. 5 shows another embodiment, in which (a) shows a roller, (b) shows a cylindrical tube, and the roller is constructed by folding the outer peripheral portion 22 of the cylindrical tube toward the shaft portion 21 side. A thin groove 25 is provided between the shaft portion 21 and the outer peripheral portion 22 so as to be easily folded back.
[0025]
Further, convex portions 26a, 26b,... Are arranged at equal intervals on the outer periphery of the shaft portion, and convex portions 27a, 27b,. Yes. Therefore, if the outer peripheral portion 22 is folded back toward the shaft portion 21, the convex portion 27a can overlap with the convex portion 26a, and the convex portion 27b can overlap with the convex portion 26b.
[0026]
The groove 24 is also formed on the outer peripheral surface of the roller configured by folding the outer peripheral portion 22, but the convex portions 26 and 27 that support the outer peripheral portion 22 are not provided continuously, When the outer periphery of the disk fits into the groove 24 and rotates, the surface pressure acting between the rollers is not constant. This causes a large amount of friction to be generated intermittently, so that the disc can be reliably carried in without causing a slip. Here, not only when the convex portions 26a, 26b,... And the convex portions 27a, 27b,... Are formed at equal intervals, the effect of preventing resonance and resonance with the disk by forming them at irregular intervals. There is.
[0027]
FIG. 6 shows the roller shown in FIG. 5 attached to the base 28, which is attached to a shaft 29. The roller is configured such that the outer peripheral portion 22 is folded back on the shaft portion 21, but the convex portion 26 protruding on the outer periphery of the shaft portion overlaps with the convex portion 27 protruding on the outer peripheral portion. A space 30 is formed between the first and second protrusions 26 and 27 via both convex portions 26 and 27. A base portion 28 is fitted and attached to the hole of the shaft portion 21, and the base portion 28 is attached to the shaft 29.
[0028]
A groove 24 is formed on the outer peripheral surface of the folded outer peripheral portion 22, and the outer periphery of the disk is positioned in the groove 24 to position the disk. As described above, the conveying roller of the present invention is configured by folding the outer peripheral portion of the cylindrical tube, and the following effects can be obtained.
[0029]
【The invention's effect】
The carrying-in roller according to the present invention is made of an elastic body such as rubber, and can be carried into the disk device by sandwiching the outer periphery of the disk. The left and right rollers to be sandwiched do not scratch the recording surface by hitting the outer periphery of the disk, and the outer peripheral portion can be carried in stably without being deformed by a depression and slipping, and without generating abnormal noise. The outer peripheral part to be folded is supported by a ring or a convex part, and a space is formed between the shaft part and the outer peripheral part is deformed when it hits the outer periphery of the disk. Bring in the disc.
[0030]
On the other hand, the roller of the present invention is constructed by folding cylindrical tubes, and each cylindrical tube can be manufactured by cutting a long series of tubes, so the productivity is higher than when molding one by one. The cost is also cheaper. Since the folded outer periphery shrinks between the two rings to form a groove, the outer periphery of the disc that is sandwiched is fitted into the groove for positioning.
[Brief description of the drawings]
FIG. 1 is an external view of a disk device.
FIG. 2 is a specific example of a disk device loading device;
FIG. 3 shows a carrying-in roller and a cylindrical tube according to the present invention.
FIG. 4 is a cylindrical tube constituting a roller according to the present invention.
FIG. 5 shows a carrying-in roller and a cylindrical tube according to the present invention.
FIG. 6 shows the case where the roller of the present invention is attached to the base.
FIG. 7 is a conventional carry-in roller.
FIG. 8 shows a conventional roller attached to the main body.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Disc apparatus 2 Front panel 3 Insertion hole 4 Disc 5 1st drive roller 6 Arm 7 2nd drive roller 8 1st gear 9 2nd gear
10 Intermediate gear
11 First roller
12 Second roller
13 Slider
14 Right link
15 Left link
16 axes
17 Medium links
18 Slotted hole
19 Connecting pin
20 Coil spring
21 Shaft
22 outer periphery
23 rings
24 groove
25 groove
26 Convex
27 Convex
28 base
29 Shaft
30 spaces

Claims (4)

In the loading roller of the disk device, which is placed on the left and right near the insertion slot and is inserted into the device by sandwiching the outer periphery of the disk, the outer peripheral side of the cylindrical tube made of an elastic material such as rubber is folded outward to the shaft side. And at least two rings are provided outside the shaft portion or outer peripheral portion in a state before being folded back , and the outer peripheral portion is supported via the ring by folding back to the shaft portion side. A roller for carrying in a disk device, characterized in that a space is formed between the two parts. 2. The carry-in roller for a disk device according to claim 1, wherein the roller is carried along the outside of both sides of the shaft portion and the outer peripheral portion before the ring is folded back . In the loading roller of the disk device, which is placed on the left and right near the insertion slot and is inserted into the device by sandwiching the outer periphery of the disk, the outer peripheral side of the cylindrical tube made of an elastic material such as rubber is folded outward to the shaft side. A plurality of convex portions are provided on the outside of the shaft portion or outer peripheral portion in a state before being folded back , and the outer peripheral portion is supported via the convex portion by folding back to the shaft portion side. A roller for carrying in a disk device, characterized in that a space is formed between them. 4. The carry-in roller for a disk device according to claim 3, which is provided on the outer sides of both sides of the shaft portion and the outer peripheral portion before the convex portion is folded back .

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