JP4149149B2 - Optical disk transport device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an optical disk transport apparatus in an optical disk playback apparatus.
[0002]
[Prior art]
3A is a plan view showing a chassis assembly of a conventional in-vehicle optical disc apparatus, FIG. 3B is a side view thereof, and FIG. 4 is a plan view of a feed plate assembly. 3 and 4, a feed plate assembly is disposed at the front portion of the lower chassis 31. In the feed plate assembly, a feed roller 82 covered with a rubber roller 81 formed in a taper shape from a central portion toward both ends on a roller shaft 80 is driven by a roller gear 83 press-fitted into the right end portion in the figure. The gear 66 is rotationally driven by meshing with the gear 66. The feed roller 82 is rotatably supported by both side plates 84 a and 84 b of a sheet metal feed plate 84 via roller bearings 85 and 86 inserted at both ends of the roller shaft 80. Guide pins 87 and 88 protrude outwardly from both side plates 84a and 84b of the feed plate 84, and support shafts 89 and 90 are fixed to the rising pieces 84c and 84d by caulking. Yes. The support shafts 89 and 90 of the feed plate assembly are placed in U-shaped grooves 91a and 92a formed in the rising pieces 91 and 92 provided on the left and right sides of the front portion of the lower chassis 31. Between the bent portions 84e, 84f facing downward and the bent portions 31e, 31f of the lower chassis 31, tension coil springs 93, 94 are spanned to urge the feed plate 84 to rotate upward. Thus, the roller gear 83 of the roller shaft 80 is engaged with the drive gear 66. The drive gear 66 is driven by a motor 70 via gear trains 67, 68 and 69.
[0003]
The optical disk D inserted between the feed roller 82 and the disk sliding plate fixed to the upper chassis on the feed roller 82 is drawn into the apparatus by the rotation of the feed roller 82 by the motor 70. By reversing, it is discharged to a predetermined position of the apparatus. The feed roller 82 is formed in a taper shape in which the rubber roller 81 has a narrow central portion and increases in diameter toward both ends. Therefore, even if the operator inserts the optical disc D toward one side of the apparatus, the rubber roller 81 is inserted. Therefore, it can be transported correctly to the disc playback position. It also serves to prevent contact scratches between the optical disk D and the rubber roller 81.
[0004]
[Problems to be solved by the invention]
However, this type of optical disk reproducing apparatus for vehicles is required to be further thinned due to the limitation of installation space. In this case, the thickness of the feed roller is one of the keys to thinning. The feed roller has an axial length that is considerably longer than its diameter. When the optical disc is transported, the feed roller presses the optical disc and rotates while receiving force in the front-rear direction and the pressing direction. If there is no, there will be deformation, and there is a limit in reducing the diameter of the feed roller. Further, since the rubber roller is formed in a taper shape, the thickness of the minimum diameter portion must be ensured. If a predetermined gradient is given from the minimum diameter portion, the diameter of the maximum diameter portion is naturally determined. There was a limit in reducing the diameter of the.
[0005]
The present invention solves such a conventional problem, and an object of the present invention is to provide an optical disk transport device that can be made thin.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, an optical disk transport apparatus according to the present invention comprises a feed roller having a roller shaft covered with a rubber roller to draw an optical disk into the apparatus, a bearing section that rotatably supports both ends of the feed roller, and A support plate having a guide portion that rotatably supports a central portion of the feed roller away from the optical disc , the feed roller having a sleeve inserted in the central portion of the roller shaft, and the sleeve is the guide are inserted into a plurality of projecting pieces provided in the section, the height of the protrusion is intended is less than the diameter of the radius or more and the sleeve of the sleeve, this configuration, even when slimming roller shaft, its Since the pressure applied to the central part is received by the guide part of the support plate, deformation of the roller shaft can be prevented, and the feed roller and thus the entire apparatus is thinned. It can be of.
[0007]
The optical disk conveying apparatus of the present invention is that characterized in that pre-Symbol sides tapered rubber roller which is enlarged toward the both end portions of the sleeve are covered by this configuration, tapered rubber rollers Since the thickness of the minimum diameter portion can be secured even if the length of the rubber roller is shortened, the rubber roller, and thus the feed roller and the apparatus can be made thinner.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of a feed plate assembly of an optical disk transport device for a vehicle according to an embodiment of the present invention, FIG. 2 (a) is a cross-sectional view taken along line AA in FIG. 1, and FIG. FIG. In FIG. 1 and FIG. 2, side plates 2 and 3 bent downward are formed on both sides of a feed plate 1 which is a sheet metal support plate, and the upper part which is a bearing portion is opened on the rear side. Circular bearing grooves 4 and 5 are formed, and rotary support shafts 6 and 7 are formed on both sides of the front portion so as to protrude outward by drawing. In addition, a guide portion 8 protrudes from the center portion of the feed plate 1 toward the rear. The guide portion 8 includes a projecting piece 8a formed upward at the rear portion, and a projecting piece 8b formed upward with a gap d between the projecting pieces 8a on both sides of the projecting piece 8a. , 8c. The width d of each projecting piece 8a, 8b, 8c is substantially equal to the diameter of the sleeve 11 of the feed roller 9, which will be described later, and its height h is smaller than the diameter of the sleeve 11 and larger than the radius.
[0009]
The feed roller 9 covers a thin roller shaft 10 having a diameter of about 2 mm and covers a sleeve 11 made of resin at the center and covers tapered rubber rollers 12 and 13 whose diameters are expanded toward both ends on both sides of the sleeve 11. It is a thing. Resin-made cylindrical bearings 14 and 15 are inserted into both ends of the roller shaft 10, and a gear 16 is press-fitted into the other end.
[0010]
In such a feed roller 9, the sleeve 11 at the center is inserted between the projecting pieces 8 a, 8 b, 8 c of the guide portion 8 of the feed plate 1, and the bearings 14, 15 at both ends are inserted into both sides of the feed plate 1. Are attached to the feed plate 1 so as to be rotatable. The feed plate 1 is rotatably supported by the bearing portion of the lower chassis of the optical disc reproducing apparatus, and the rotational force from the feed motor is transmitted to the gear 16 through the gear train, so that the feed roller 9 rotates, The optical disk is drawn into the apparatus in cooperation with the arranged disk sliding plate. At that time, although pressure is applied to the feed roller 9 in the front-rear direction and the downward direction, the center portion of the feed roller 9 is supported by the guide portion 8, so that the disk can be reliably conveyed without deformation. it can. Further, since the height h of the projecting pieces 8a, 8b, 8c of the guide portion 8 is set to be equal to or smaller than the diameter of the sleeve 11 and larger than the radius, it does not come into contact with the conveyed optical disk and obstructs the conveyance of the optical disk. Never do.
[0011]
As described above, according to the present embodiment, the guide portion 8 including the three projecting pieces 8a, 8b, and 8c is provided at the center of the rear portion of the feed plate 1 that rotatably supports both end portions of the feed roller 9, and feeds. Since the roller 9 is inserted into the central portion of the roller shaft 10 by the sleeve 11 and supported by the guide portion 8 of the feed plate 1 through the sleeve 11, the roller shaft 10 can be deformed during rotation even if the roller shaft 10 is thinned. For this reason, the entire feed roller 9 can be made thin, and as a result, the entire apparatus can be made thinner.
[0012]
【The invention's effect】
As described above, the optical disk transport apparatus of the present invention includes a feed roller having a roller shaft covered with a rubber roller to draw an optical disk into the apparatus, and a bearing section and a feed roller that rotatably support both ends of the feed roller. And a support plate having a guide portion that rotatably supports the central portion of the roller, so that the pressure applied to the central portion can be received by the guide portion of the support plate even if the roller shaft is thinned. It is possible to reduce the thickness of the feed roller and the device, and the height of the protruding piece of the guide portion is set to be equal to or less than the diameter of the sleeve and equal to or more than the radius. There is no hindrance to the conveyance of the optical disk.
[0013]
Further, in the optical disk transport device of the present invention, the feed roller has a sleeve inserted in the center portion of the roller shaft, and the sleeve is covered with a tapered rubber roller whose diameter is expanded toward both ends. Even if the length of the tapered rubber roller is shortened, the thickness of the minimum diameter portion can be ensured, and the rubber roller, and by extension, the feed roller and the apparatus can be reduced in thickness.
[Brief description of the drawings]
FIG. 1 is a plan view of a feed plate assembly of an optical disk reproducing apparatus according to an embodiment of the present invention. FIG. 2 (a) is a cross-sectional view taken along line AA in FIG. FIG. 3A is a plan view of a chassis assembly of an optical disk reproducing apparatus in a conventional example. FIG. 4B is a right side view of a chassis assembly of an optical disk reproducing apparatus in a conventional example. Plan view of feed plate assembly [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Feed plate 2, 3 Side plate 4, 5 Bearing groove 6, 7 Rotating spindle 8 Guide part 8a, 8b, 8c Projection piece 9 Feed roller 10 Roller shaft 11 Sleeve 12, 13 Rubber roller 14, 15 Bearing 16 Gear 16

Claims (2)

A feed roller with a rubber roller on a roller shaft to draw an optical disk into the apparatus, a bearing section that rotatably supports both ends of the feed roller, and a center section of the feed roller that is rotatably supported away from the optical disk And a support plate having a guide portion , wherein the feed roller has a sleeve inserted in a central portion of the roller shaft, and the sleeve is inserted into a plurality of projecting pieces provided in the guide portion. The height of a piece is an optical disk conveying apparatus which is not less than the radius of the sleeve and not more than the diameter of the sleeve . Optical disc conveying apparatus according to claim 1, wherein a tapered rubber roller which is enlarged toward the both end portions are covered on both sides before Symbol sleeve.

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