JPH10222907A - Disk reproducing/recording apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely perform retraction and ejection operations of a disk and prevent damage of the disk with employing a simple configuration by providing a mechanism for retraction and ejecting the disk using a rubber roller with a brush portion contacting the rubber roller, thereby eliminating dusts attached to the rubber roller. SOLUTION: When a disk 28 such as a CD or the like is inserted into a disk reproducing/recording apparatus, a driving mechanism causes a rubber roller 18 made of a silicone rubber or the like to rotate, so that the disk 28 is interposed and retraction between the rubber roller 18 and a pressing member 25 formed of a plastic material and then transported to an optical recording/ readout section including a spindle and an optical pickup. A lot of brush hair planted in a planting portion 21 of a brush member 15 are disposed so that tip portions thereof contact the rubber roller 18. Thus, by rotating the rubber roller 18, dusts produced in the apparatus and attached to the rubber roller 18, especially metal powders, glass powders or the like which may damage a recording surface of the disk 28, are eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a disk reproducing / recording apparatus. More specifically, the present invention relates to a technique for removing dust generated in a device and adhering to a roller portion of a pinch roller, enabling appropriate drawing and discharging of a disk to and from the device and preventing damage to the disk.

[0002]

2. Description of the Related Art There is a disk reproducing / recording apparatus for reading a signal recorded on a disk or recording a signal on the disk.
2. Description of the Related Art There is a type in which a disk is inserted into and ejected from an apparatus by sandwiching the disk between a roller portion of a pinch roller and a pressing member and rotating the roller portion of the pinch roller.

In such a pinch roller, in order to secure a predetermined coefficient of friction for the roller portion, the roller portion is formed by externally fixing a rubber roller formed of silicon rubber or the like on a rotating shaft. doing. By rotating the roller unit while sandwiching the upper and lower sides of the disk with the pressing member and the roller unit, the disk is drawn into the apparatus and the disk is ejected from the apparatus according to the rotation direction. .

[0004]

However, in a disk reproducing / recording apparatus of the type in which a disk is drawn into and ejected from the apparatus by such a pinch roller, the rubber roller made of a rubber material is formed on the surface of the roller section as described above. , Dust generated in the device easily adheres to the surface thereof, which may cause various obstacles.

[0005] For example, dust adhering to the roller unit reduces the friction coefficient of the roller unit, which lowers the function of pulling in and discharging the disk with respect to the apparatus, and causes a disk drawing error and a disk discharging error.

Further, if dust, particularly metal powder or glass powder, adheres to the roller, the disk may be damaged, and in particular, the roller may come into contact with the lower surface (recording surface) of the disk as described above. In such a case, an obstacle occurs in that the performance of the disk itself is reduced.

Therefore, the disk reproducing / recording apparatus of the present invention overcomes the above-mentioned problems, eliminates dust adhering to the roller portion of the pinch roller, enables the disk to be properly drawn into and ejected from the apparatus, and It is an object of the present invention to prevent the damage of the device.

[0008]

In order to solve the above-mentioned problems, the disk reproducing / recording apparatus of the present invention is provided with an elimination means for eliminating dust generated in the apparatus and adhering to the roller portion of the pinch roller. It is.

Therefore, in the disk reproducing / recording apparatus of the present invention, dust adhering to the roller is eliminated.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a disk reproducing / recording apparatus according to the present invention will be described below with reference to an illustrated embodiment.

The disc reproducing / recording apparatus according to the present invention refers to an apparatus which includes any of a device capable of reproducing and recording a signal on and from a disc, a device exclusively for reproduction, and a device exclusively for recording.

In this specification, the directions are indicated by a frontward direction toward the lower left in FIG. 1, a rearward direction toward the upper right, a leftward direction toward the upper left and a rightward direction toward the lower right in FIG. In the following description, an upward direction is defined as an upward direction, and a downward direction is defined as a downward direction.

The disc reproducing / recording apparatus 1 has a plastic base chassis 2, and a metal auxiliary chassis 3 having a long concave shape on the left and right as viewed from the front is connected and fixed to the front end thereof (FIGS. 1 and 2). reference).

The base chassis 2 is in the shape of a flat box having an open top and front, and a substantially rectangular frame-shaped pickup base 5 is disposed on a bottom plate 2a. The spindle 4 is fixed at a position slightly closer to the front end than the center of the bottom plate 2a of the base chassis 2.

An optical pickup 7 is movably supported in the front-rear direction by support shafts 6, 6 provided on the pickup base 5 so as to be separated from each other in the left and right direction. The optical pickup 7 includes a motor, a gear group 8 and a gear (not shown). The pickup 8 is moved in the front-rear direction by a pickup moving mechanism 10 including a rack member 9 meshed with one gear 8a of the group 8 (see FIG. 2).

Further, the base chassis 2 is provided with a chucking mechanism (not shown) for chucking a disk described later.

A pinch roller 12 is rotatably supported on the bottom plate 11 of the auxiliary chassis 3, and the pinch roller 12 is rotated clockwise or counterclockwise as viewed from the left or right by a rotating mechanism (not shown). It is supposed to be.

The pinch roller 12 includes a roller portion 13, a support portion 14 for rotatably supporting the roller portion 13, and a support portion 1.
4 (see FIGS. 3 and 4).

The roller portion 13 is formed of a metal material and has a rotating shaft 16 which is long in the left and right direction, a resin gear 17 which is externally fitted and fixed to the left end of the rotating shaft 16, and a roller shaft 13 which is provided on the left and right ends of the rotating shaft 16 except for both left and right ends. And a rubber roller 18 formed of a rubber material such as silicone rubber which is fitted and fixed. And
The rubber roller 18 has a shape in which the central portion in the left-right direction is constricted. The gear 17 is meshed with a gear of a driving mechanism (not shown), and the rotating shaft 16 is rotated by the driving mechanism.

The support portion 14 is formed of a sheet metal material, and includes a mounting portion 14a which is long in the left-right direction and bearing portions 14b, 14b projecting upward from both ends of the mounting portion 14a. A shaft support piece 19 protruding forward is provided at a lower end of both ends of the support portion 14,
A support shaft 20, 20 protruding outward is fixed to the shaft support pieces 19, 19. The rotating shaft 16 of the roller portion 13 is rotatably supported by the upper ends of the bearing portions 14b, 14b.
Are rotatably supported by a support portion (not shown) provided on the auxiliary chassis 3.

The elimination means 15 is a brush member, and the brush member 15 is provided with a planting portion 21 which is long in the left-right direction.
Are arranged at the upper end of the brush. The length of the planting portion 21 in the left-right direction is substantially the same as that of the rubber roller 18 of the roller portion 13.

The implant portion 21 of the brush member 15 is attached to the rear surface of the attachment portion 14a of the support portion 14.
Also, the brushes 22, 22,...
Is attached to the attachment portion 14a, and has a length such that the tip thereof contacts the rubber roller 18.

The front half of the base chassis 2 and the auxiliary chassis 3 are covered by a cover plate 23 (see FIGS. 1 and 2).

The cover plate 23 has a support substrate 24 formed of a sheet metal material and a holding member 25 attached to the lower surface thereof and formed of a plastic material.

The pressing member 25 has a front-rear width of approximately one third of that of the support substrate 24 and a width approximately equal to that of the support substrate 24. The pressing member 25 has a shape in which the central portion 26 in the front-rear direction gently protrudes downward toward the center thereof, and is formed as a sliding contact portion that comes into contact with the upper surface of the disk when a disk described later is drawn in and discharged. A recess 2 extending in the left-right direction at the center of the sliding contact portion 26;
7 are formed. The concave portion 27 has a shape that is substantially complementary to the upper surface of the rubber roller 18 of the pinch roller 12, that is, has a shape that allows the upper surface of the rubber roller 18 to enter.

Thus, a disc 28, for example, a CD,
Rubber roller 1 of pinch roller 12 for CD-R, DVD, etc.
8 and between the pressing member 25 of the cover plate 23,
The roller unit 1 of the pinch roller 12 is driven by the driving mechanism described above.
4 is rotated counterclockwise as viewed in FIG. 4, whereby the disk 28 is drawn into the apparatus 1 while its upper surface is in sliding contact with the sliding portion 26 of the pressing member 25.

At this time, since the brushes 22, 22,... Of the brush member 15 of the pinch roller 12 are in contact with the rubber roller 18 as described above, the rotation The dust adhering to the rubber roller 18 will peel off.

When the center of the disk 28 is located directly above the spindle 4 fixed to the bottom plate 2a of the base chassis 2, the pinch roller 12 is rotated by the above-mentioned rotating mechanism with the supported shafts 20, 20 as fulcrums. 4, the pinch roller 12 which has been in contact with the disk 28 is retracted from the disk 28.

Then, the disk 28 is moved slightly downward, and its center is mounted on the spindle 4 and chucked by the above-mentioned chucking mechanism to enable reproduction and recording of signals. Move in the radial direction of the disk 28 and
8 is reproduced or recorded.

When the reproduction or recording of the signal is completed, the chucking of the disk 28 by the chucking mechanism is released, and at the same time, the pinch roller 12 is rotated by the rotating mechanism as shown in FIG.
, The disk 28 is again sandwiched between the roller portion 13 of the pinch roller 12 and the pressing member 25.

Then, the pinch roller 12 is driven by the driving mechanism.
Is rotated clockwise as viewed in FIG.
As a result, the disk 28 is discharged out of the apparatus 1 while its upper surface is in sliding contact with the sliding portion 26 of the pressing member 25.

At this time, similarly to the time when the disk 28 is pulled in, the dust generated in the apparatus 1 and adhered to the rubber roller 18 is peeled off by the rotation of the rubber roller 18.

However, in the above-described embodiment, the dust generated on the rubber roller 18 due to the rotation of the rubber roller 18 when the disk 28 is drawn in and ejected and adhered to the rubber roller 18 is peeled off. A reduction in the coefficient of friction of the roller portion 13 is prevented, whereby a function of pulling in and discharging the disk 28 from and to the apparatus 1 is not reduced, and a drawback error and a discharge error of the disk 28 do not occur.

The disk 28 in contact with the roller unit 13
The recording surface of the disk 28 is not damaged by dust, and the proper performance of the disk 28 can be ensured.

Further, a brush member 15 serving as an elimination means for eliminating dust adhering to the roller portion 13 is connected to the pinch roller 12.
Is provided on the support portion 14 of the
There is no need to provide another special mechanism for eliminating dust from the apparatus 3, and the manufacturing cost of the apparatus 1 does not increase significantly.

In addition, the elimination means includes a large number of brushes 22, 2
Since the brush member 15 is simple, the manufacturing cost of the apparatus 1 does not increase significantly by using the brush member 15 as the elimination means. , 22,... Are pressed directly against the surface of the rubber roller 18 so that the dust is peeled off by the rotation of the roller unit 13, so that the attached dust can be reliably removed.

In the above embodiment, the brush member 15 in which a large number of brushes 22, 22,... Are planted in the planting portion 21 is used as the exclusion means, as shown in FIG. In place of the brushes 22, 22,..., A material having flexibility and elasticity, for example, a brush member 15A using a sponge may be used as the removing means.

The brush member 15A comprises a mounting portion 29 which is long in the left-right direction and an exclusion portion 30 which is fixed to the upper surface of the mounting portion 29 and which is long in the left-right direction. The exclusion portion 30 has flexibility and elasticity. Moreover, it is formed of a material that can be in constant contact with the rubber roller 18, for example, a material such as a sponge. The length of the mounted portion 29 in the left-right direction is substantially the same as that of the rubber roller 18 of the roller portion 13.

The brush member 15A is attached to the mounting portion 29.
Are attached to the rear surface of the attachment portion 14a of the support portion 14, and the exclusion portion 30 has the attached portion 29
a, the tip of the rubber roller 1
8.

In the case of the brush member 15A as well, the rubber roller 18 rotates in the apparatus 1 when the disk 28 is drawn in and ejected, and adheres to the rubber roller 18 when the disk 28 is pulled in and ejected. The dust that had been coming off would fall off.

Even when the brush member 15A is used as the elimination means 15 as described above, similarly to the brush member 15, the rubber roller 1 is used when the disk 28 is pulled in and discharged.
The dust generated in the apparatus 1 and adhered to the rubber roller 18 due to the rotation of the roller 8 is peeled off.
The same effect as in the case of using is obtained.

Further, since the brush member 15A is a simple one in which the removing portion 30 made of sponge or the like is fixed to the mounting portion 29, the use of the brush member 15A as the removing means significantly reduces the manufacturing cost of the apparatus 1. In addition, the dust does not increase, and the removing unit 30 is directly pressed against the surface of the rubber roller 18 to remove the dust by the rotation of the roller unit 13. Therefore, it is possible to reliably remove the attached dust. it can.

[0043]

As is apparent from the above description, in the disk reproducing / recording apparatus of the present invention, the disk is inserted into and pulled out of the apparatus by the pinch roller and the pressing member. A disc reproducing / recording apparatus which is configured to rotate the unit, and provided with an elimination means for eliminating dust generated in the apparatus and adhering to the roller part of the pinch roller. Adhered dust is eliminated, thereby preventing a reduction in the coefficient of friction of the roller portion, so that a function of drawing and discharging the disk to the apparatus is not reduced, and no error in drawing or discharging the disk occurs.

Further, since dust adhering to the roller portion is eliminated, the disk in contact with the roller portion is not damaged by the dust, and proper performance of the disk can be ensured.

In the invention according to the second aspect, the pinch roller includes the roller portion and the support portion for rotatably supporting the roller portion, and the supporting portion is provided with the exclusion means. There is no need to provide another special mechanism for eliminating dust inside, and the manufacturing cost of the apparatus does not increase significantly.

Further, according to the third and fourth aspects of the present invention, the exclusion means is implanted in the implanted portion and the implanted portion, and a large number of the excluding means come into contact with the roller portion when the roller portion rotates. It is a brush member composed of a brush, and the brush member is a simple one. Therefore, the use of the brush member as the elimination means does not significantly increase the manufacturing cost of the apparatus. Since it is in direct contact with the surface of the roller portion, dust adhering during rotation of the roller portion can be reliably removed.

It should be noted that the specific shapes and structures of the respective parts shown in the above-described embodiments are merely examples of the embodiment of the present invention, and the technical features of the present invention are not limited thereto. The scope should not be construed as limiting.

[Brief description of the drawings]

FIG. 1 shows an embodiment of a disc reproducing / recording apparatus according to the present invention together with FIG. 2 to FIG. 4, and FIG. 1 is a schematic perspective view.

FIG. 2 is a schematic plan view.

3 shows a state in which the disk is sandwiched between a pinch roller and a pressing member together with FIG. 4, and FIG. 3 is an enlarged view showing a state viewed from the back side.

FIG. 4 is an enlarged cross-sectional view showing a state viewed from a side surface side.

FIG. 5 is an enlarged rear view showing a modification of the exclusion unit.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Disc reproduction / recording apparatus, 12 ... Pinch roller, 1
3 ... roller part, 14 ... support part, 15 ... rejection means, 15 ...
Brush member, 21: Implanted part, 22: Brush, 25: Holding member, 28: Disk

Claims (4)

[Claims] 1. A disc reproducing / recording apparatus, wherein a disc is inserted into and ejected from an apparatus by sandwiching the disc between a roller section of a pinch roller and a pressing member and rotating the roller section of the pinch roller. A disc reproducing / recording device provided with an excluding means for excluding dust generated inside the apparatus and adhering to a roller portion of a pinch roller. 2. The apparatus according to claim 1, wherein the pinch roller includes a roller portion and a support portion rotatably supporting the roller portion, wherein the support portion is provided with an exclusion unit.
A disk reproducing / recording device according to claim 1. 3. The brush member according to claim 1, wherein said removing means is a brush member comprising an implanted portion and a plurality of brushes implanted in said implanted portion and in contact with said roller portion when said roller portion rotates. 2. The disc reproducing / recording device according to 1. 4. A brush member comprising an implant portion and a plurality of brushes implanted in the implant portion and coming into contact with the roller portion when the roller portion rotates. 3. The disc reproducing / recording device according to 2.