JP3772310B2 - 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 simply provided with a long and 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]
The carry-in roller used in the “disc recording and / or reproducing device” according to Japanese Patent Laid-Open No. 2002-304798 is a vertical grooved roller in which V-shaped or U-shaped grooves are continuously arranged in the circumferential direction. And can be pulled in by hitting the outer periphery of the disc. A rubber-like elastic body having a large friction coefficient is provided in the groove where the outer peripheral edge of the disk contacts, but the contact area with the outer peripheral edge of the disk is limited and slippage occurs. Although the elastic body is provided in the groove, a large load is applied to the disk which is relatively hard and is sandwiched between both rollers.
[0008]
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).
[0009]
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 disc (e) hits the outer periphery, it can be deformed as shown in (b) and become familiar with the roller outer periphery (d). As a result, the contact area with the outer periphery of the disk increases, and the disk (e) can be carried into the apparatus if the roller (a) rotates while maintaining a stable adhesion.
[0010]
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 so 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.
[0011]
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 driving force is applied to the roller (b) attached to the main body (b), not only does it slip with the outer periphery of the disk, but also slips with the main body (b), It may interfere with the loading operation.
[0012]
[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 slip, enable stable loading, and prevent wear of the rollers to improve durability, Provides a carry-in roller with improved roller productivity.
[0013]
[Means for solving the problems]
The carry-in roller of the present invention is a vertical type that rotates against the outer periphery of the disc so as not to scratch the recording surface when the disc is carried in / out, and increases the adhesion with the outer periphery of the disc and secures a contact area. This is a carry-in roller that can suppress the slip and realize stable carry-in of the disc.
[0014]
Therefore, the roller has a shaft portion and an outer peripheral portion, and the outer peripheral portion is connected to the shaft portion at one end (upper end side or lower end side), and a space is formed between the shaft portion and the outer peripheral portion. And the outer peripheral part of the front end side which is not connected with the shaft part increases its outer diameter and thickness, and the outer peripheral surface forms a smooth curved surface. The shaft part is attached to the roller body, and the outer periphery of the disk comes into contact with the outer periphery. However, the thinned central part forms a groove and deforms, ensuring the positioning of the disk and an appropriate contact area. Is done. Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings.
[0015]
【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.
[0016]
FIG. 2 shows a specific example of a disk carry-in apparatus targeted by 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.
[0017]
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.
[0018]
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.
[0019]
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.
[0020]
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.
[0021]
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.
[0022]
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.
[0023]
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.
[0024]
FIG. 3 (a) is an embodiment showing the appearance of the roller of the present invention, (b) shows a section of the roller, and (c) shows a case where the roller is attached to the roller body. The roller of the present invention is made of an elastic body such as rubber, and includes a shaft portion 21 and an outer peripheral portion 22, and the outer peripheral portion 22 is connected by a shaft portion 21 and a connecting portion 23 on the lower end side thereof. The shaft portion 21 forms a cylindrical shape, the shaft hole 24 penetrates, and a space 25 is provided between the outer peripheral portion 22 and the shaft portion 21.
[0025]
By the way, the space 25 is provided over the entire circumference of the roller. Therefore, if the outer periphery of the disk hits the outer peripheral portion 22, the space 25 is appropriately crushed and deformed. And the outer peripheral surface 28 of the outer peripheral part 22 comprises a smooth curved surface, the outer diameter of the upper end part is large, and the wall thickness is also thickened. In addition, the outer diameter near the connecting portion is small, but the wall thickness is large, and the central portion is thinned. When the outer periphery of the disk hits the thin portion at the center, the space is crushed and the thin central portion 29 is deformed to hold the disc.
[0026]
This roller is injection-molded using a mold, but the outer peripheral surface 28 of the outer peripheral portion 22 has a smooth curved surface with a larger outer diameter on the upper side, so the upper draft is large and the lower side is smaller. In addition, the space 25 has a shape in which the upper draft is small and the lower draft is large, so that it is easy to mold.
[0027]
A roller body 26 is attached to the shaft hole 24 as shown in (c), and the roller body 26 that is a split type sandwiches the shaft portion 21 between the flanges 27 and 27. FIG. 4 shows a case where a shaft hole 30 is provided through the roller body 26 and a shaft 31 is fitted and attached to the shaft hole 30. Therefore, the roller rotates around the shaft 31 and can carry in the disk 4.
[0028]
FIG. 5 shows a case where the outer periphery of the disk 4 comes into contact with the roller. As shown in the figure, the outer peripheral portion 22 is deformed to hold the disk 4 and to be carried into the disk device. The outer peripheral portion 22 has an outer peripheral surface 28 having a smooth curved surface, the upper end portion 32 and the lower end portion 33 are thickened, and the central portion 29 is thin. Therefore, if the disk 4 hits the roller outer peripheral surface 28, the center part 29 that is most easily deformed is depressed to hold the disk outer periphery.
[0029]
If the disk outer periphery hits and the space 25 is crushed, as shown in the figure, the thick upper end 32 and lower end 33 are raised outward, and the disk outer periphery is positioned. If the space 25 is crushed in this way, the contact area with the outer periphery of the disk increases, and if the space is crushed and the outer peripheral part 22 hits the shaft part 21, the contact surface pressure with the outer periphery of the disk increases and a large frictional force Occurs. That is, the disc is carried in without slipping.
[0030]
FIG. 6 shows another specific example of the roller according to the present invention. The basic configuration is the same as that of the roller shown in FIG. 3, which includes a shaft portion 21 and an outer peripheral portion 22, and the outer peripheral surface 28 of the outer peripheral portion 22 is a smooth concave curved surface. However, the roller has convex portions 34, 34... On the outer periphery of the shaft portion, and concave portions 35, 35. These convex portions 34, 34... And concave portions 35, 35... Extend in the axial direction, and mesh with each other if the space 25 is crushed.
[0031]
Therefore, when the outer peripheral portion 22 is twisted by the torque acting when the disk 4 is carried in / out, the convex portions 34, 34,... Of the shaft portion 21 are engaged with the concave portions 35, 35,. The torsional deformation is prevented. As described above, the carrying-in roller of the present invention has a shaft portion and an outer peripheral portion and is connected at one end, and a space is formed between them, and the following effects can be obtained. .
[0032]
【The invention's effect】
The carrying-in roller according to the present invention is made of an elastic body such as rubber, and can stably and reliably carry into the disk device by sandwiching the outer periphery of the disk. And since the left and right rollers to be sandwiched are vertical, the recording surface will not be scratched by hitting the outer periphery of the disc, and the outer peripheral portion will be stable without slipping due to dent deformation and carrying in without generating abnormal noise I can do it. Although the outer peripheral portion is deformed by hitting the outer periphery of the disc, if the space is crushed and hits the shaft portion, a large surface pressure is generated and the disc is carried in without slipping.
[0033]
If the outer periphery of the disk is larger than the connecting part, the outer diameter of the tip is larger, the thickness of the tip and the connecting part is larger, and the central part is thinner. In this case, the tip portion side and the connecting portion side rise outward and the thinned central portion is depressed and deformed, so that the disk is positioned and carried. On the other hand, although the roller of the present invention is molded by a mold, the shape of the space formed between the outer peripheral portion and the shaft portion is provided with an appropriate draft, so that it is easy to mold and productivity. Becomes higher.
[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 an embodiment of a carry-in roller according to the present invention.
FIG. 4 shows a mounted state of the roller according to the present invention.
FIG. 5 shows a case where the outer periphery of the disk hits against the loading roller according to the present invention and is deformed.
FIG. 6 shows another embodiment of the roller of the present invention.
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 Connecting part
24 Shaft hole
25 space
26 Roller body
27 brim
28 Outer surface
29 Central
30 Shaft hole
31 shaft
32 Upper end
33 Bottom edge
34 Convex
35 recess

Claims (2)

  In a loading roller of a disk device that is arranged on the left and right in the vicinity of the insertion opening and carries the disk outer periphery into the device, the shaft portion having an axial hole made of an elastic body such as rubber, and one end of the outer peripheral portion It is composed of a connecting portion connected to the shaft portion, a space is formed between the shaft portion and the outer peripheral portion, and the outer diameter of the outer peripheral portion forms a smooth curved surface with the distal end side outer diameter larger than the connecting portion side, A carry-in roller for a disk device, characterized in that the connecting part side and the tip part side are thickened and the central part is thinned. 2. The carry-in roller for a disk device according to claim 1, wherein a concave and convex portion is formed on the outer periphery of the shaft portion and the inner surface of the outer peripheral portion, and the concave portion and the convex portion are engaged with each other when the outer periphery of the disk hits and the space is crushed.

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