JP3895248B2 - Optical disk transport device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an optical disk transport apparatus and an optical disk apparatus including the same.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a feed roller in which a rubber roller is fitted to a roller shaft has been used as an optical disc transport device for transporting an optical disc into the apparatus and out of the apparatus from the apparatus (for example, see Patent Document 1). In the disk transport device, the optical disk is transported by the frictional force between the feed roller and the optical disk by sandwiching the optical disk between the feed roller and the sheet metal top plate and rotating the feed roller.
[0003]
On the other hand, in recent years, particularly in an in-vehicle optical disc reproducing apparatus, there has been a demand for further reduction in thickness due to restrictions on installation space. In this case, the thickness of the feed roller is one of the keys to reducing the thickness of the feed roller, and it is possible to reduce the thickness by reducing the diameter of the feed roller. The length in the axial direction is considerably longer than the diameter, and when the optical disk is transported, it rotates while receiving the force in the front-rear direction and the pressing direction by pressing the optical disk. Cheap. Therefore, as shown in FIG. 5, a sleeve 103 is fitted into the central portion of the roller shaft 102 of the feed roller 101, and this sleeve 103 is supported by a sleeve support portion 105 formed at the central portion of the feed plate 104. In order to prevent the feed roller 101 from being deformed by a load when the disk D is transported while being sandwiched between the feed roller 101 and the top plate 106, the disk D is transported.
[0004]
[Patent Document 1]
Japanese Patent Application Laid-Open No. 10-31855
[Problems to be solved by the invention]
However, in the above-described conventional optical disc transport apparatus, the sleeve support portion 105 for supporting the sleeve 103 is formed by being bent downward and protruding at the center of the front end portion of the feed plate 104. There is a problem that a gap 107 is formed between the optical disk D and the leading end of the optical disk D hits the sleeve 103 and is difficult to insert depending on the insertion angle of the optical disk D. Further, since the sleeve 103 has a cylindrical shape, the position of the sleeve 103 is not fixed in the sleeve support portion 105, and the sleeve 103 rattles in the sleeve support portion 105 when the optical disc apparatus receives vibration due to disturbance or the like. There was a problem that contact sound was generated.
[0006]
The present invention solves such a conventional problem, and an object of the present invention is to provide an excellent optical disk transport apparatus capable of smoothly inserting an optical disk into the apparatus when the optical disk is inserted, and an optical disk apparatus using the same. And
[0007]
[Means for Solving the Problems]
In order to achieve the above object, an optical disk conveying apparatus according to the present invention includes a feed roller in which a sleeve is fitted in a central portion of a roller shaft and rubber rollers are fitted on both sides thereof, and the roller shaft is disposed at both ends of the feed roller. And a feed plate having a sleeve support portion for supporting the sleeve at the central portion of the feed roller, the sleeve being integrally provided with an optical disc guide portion for guiding the optical disc. With this configuration, the optical disc can be smoothly inserted by the optical disc guide unit guiding the optical disc when the optical disc is inserted.
[0008]
Further, the optical disk transport device of the present invention is characterized in that it includes protrusions on both sides of the sleeve support portion of the feed plate and mounting holes that are press-fitted into the protrusions on both sides of the optical disk guide portion of the sleeve. To do. With this configuration, contact noise between the sleeve and the sleeve support portion of the feed plate can be prevented.
[0009]
Further, the present invention is an optical disc apparatus provided with the above-described optical disc transport apparatus and at least one of an optical disc reproducing unit and an optical disc recording unit, and can provide an optical disc apparatus capable of smoothly inserting an optical disc.
[0010]
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 conveying apparatus showing an embodiment of the present invention. FIG. 2 (a) is a cross-sectional view taken along line AA in FIG. 1, and FIG. It is a right view. In FIG. 1 and FIG. 2, side plates 2 and 3 bent downward are formed on both sides of the feed plate 1, and semicircular bearing grooves 4 with the upper part being a bearing portion open on the rear side, 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. Further, the feed plate 1 has a projecting piece 8a bent upward at the front end part of the front end part thereof, and upwards with a gap d on both sides of the projecting piece 8a. A sleeve support portion 8 is provided that includes projecting pieces 8b and 8c that are bent toward each other. The feed roller 9 is fitted with a resin sleeve 11 integrally formed with an optical disk guide portion 17 at the center of a thin roller shaft 10 having a diameter of about 2 mm, and the diameter of the sleeve 11 is increased toward both ends on both sides of the sleeve 11. Tapered rubber rollers 12 and 13 are fitted. Resin-made cylindrical bearings 14 and 15 are fitted to both ends of the roller shaft 10, and a gear 16 is press-fitted into one end thereof.
[0011]
As shown in FIG. 2A, the sleeve support portion 8 of the feed plate 1 is formed as a U-shaped concave portion by bending the center portion of the front end portion of the feed plate 1 downward, and the sleeve 11 is formed of the sleeve support portion 8. It has a dimension that is slightly smaller than the depth dimension e, and is configured to fit within the sleeve support portion 8. The height h of the protruding pieces 8a, 8b, 8c of the feed plate 8 is lower than the height of the sleeve 11, and the height of the optical disc guide portion 17 is the height from the bottom of the sleeve support portion 8 to the feed plate main body 1a. It has a dimension that is less than the dimension f and has a dimension that is greater than or equal to the height h of the projecting pieces 8b and 8c, and is connected by an inclined surface from the outer periphery of the sleeve 11 to the feed plate body 1a. Further, as shown in FIG. 1, mounting holes 17a and 17b are provided on both sides of the optical disc guide portion 17 at positions substantially equal to the width d of the projecting pieces 8b and 8c, respectively. It is desirable that the sleeve 11 and the optical disk guide portion 17 have a slippery property when contacting the optical disk D such as tetrafluorofluoroethylene resin or silicon resin.
[0012]
The operation of the feed plate assembly configured as described above will be described. The feed roller 9 press-fits the mounting holes 17a and 17b of the optical disc guide portion 17 at the center thereof into the projecting pieces 8b and 8c of the feed plate 1, and further, the bearings 14 and 15 at both ends thereof are bearing grooves on both sides of the feed plate 1. By being pushed into 4 and 5, it is rotatably attached to the feed plate 1. As shown in FIG. 3, the feed plate 1 is rotatably supported by the lower chassis 21 of the in-vehicle optical disc reproducing apparatus, and the rotational force from the feed motor 22 is transmitted to the gear 16 via the gear train 23 to feed the feed roller. 9 rotates and draws the optical disk D in the direction of arrow B in the direction of arrow B in cooperation with the upper chassis (top plate) arranged on the upper part. At that time, as shown in FIG. 4, the front end portion (the outermost peripheral portion in the direction of arrow B) of the optical disc D inserted on the front side of the sleeve 11 hits the slope of the upper surface of the optical disc guide portion 17 of the sleeve 11 and guides it. Thus, since the rubber rollers 12 and 13 are guided, the optical disk D can be smoothly inserted to the feed roller 9. When the optical disk D is sandwiched between the feed roller 9 and the upper chassis 24, the front end of the feed plate 1 is pushed downward against the return spring, and the feed motor 22 rotates to feed through the gear 16. The roller 9 is rotated, and the optical disk D is conveyed to the recording / reproducing unit by the frictional force of the rubber rollers 12 and 13. At this time, pressure is applied to the feed roller 9 in the front-rear direction and the downward direction, but the feed roller 9 is deformed because the sleeve 11 at the center is supported by the sleeve support portion 8 of the feed plate 1. Therefore, the optical disk D can be reliably conveyed. Further, the upper chassis 24 has three protrusions 25, 26 and 27 serving as disk guides on the back side of the disk insertion portion so as to protrude in a mountain shape toward the feed roller 9 side, and the feed roller 9 Are further tapered from the center toward both sides, so that the inserted optical disk D is reliably transported to the recording / playback unit while being centered in the center. Is done. As shown in FIG. 3, the optical disk D transported into the apparatus is clamped on a turntable by a clamp section 28 at the center of the apparatus, is driven to rotate by a spindle motor, and an optical disk reproducing section having an optical pickup receives a signal. Reading is performed and music or data is played back.
[0013]
As described above, according to the present embodiment, the optical disc guide portion 17 is formed integrally with the sleeve 11 that supports the center portion of the feed roller 9, and when the optical disc D is inserted, the leading end portion of the optical disc D is placed on the optical disc guide portion 17. By guiding toward the feed roller 9, the optical disc D can be smoothly inserted into the apparatus. Further, the mounting holes 17a and 17b provided on both sides of the optical disc guide portion 17 are press-fitted and fixed to the projecting pieces 8b and 8c provided in the sleeve support portion 8 of the feed plate 1, whereby the sleeve 11 is supported by the vibration by the sleeve. Generation of contact sound due to rattling in the portion 8 can be prevented. In actual use, a slight gap is generated between the through hole of the sleeve 11 and the roller shaft 10, so that contact noise between the sleeve 11 and the roller shaft 10 may be generated by vibration of the apparatus. For this reason, for example, the roller shaft 10 is slightly bent so that the center portion of the roller shaft 10 moves away from the sleeve support portion 8, and the shaft center line of the roller shaft 10 and the shaft center line of the through hole of the sleeve 11 It is desirable to install the roller shaft 10 and the sleeve 11 so that the tension is slightly shifted.
[0014]
In the above-described embodiment, the present invention has been described as a disk transport device of an in-vehicle optical disk playback device. However, the present invention can also be applied to a general optical disk playback device, a recording device, or a recording / playback device. .
[0015]
【The invention's effect】
As described above, in the optical disk conveying apparatus of the present invention, the sleeve fitted into the central part of the shaft portion of the feed roller is integrated with the optical disk guide section that guides the leading end of the optical disk inserted into the apparatus into the apparatus. Thus, the optical disk guide portion guides the optical disk to the feed roller when the optical disk is inserted, so that the optical disk can be smoothly inserted into the apparatus. In addition, the mounting holes provided on both sides of the optical disc guide portion are press-fitted into and fixed to the projecting pieces provided on the feed plate, thereby preventing the occurrence of abnormal noise due to contact between the sleeve and the feed plate. .
[Brief description of the drawings]
FIG. 1 is a plan view of a feed plate assembly of an optical disk transport device according to an embodiment of the present invention. FIG. 2 (a) is a cross-sectional view taken along line AA in FIG. FIG. 4 is a schematic plan view showing an internal configuration of an in-vehicle optical disc reproducing apparatus according to an embodiment of the present invention. FIG. 4 is a schematic sectional view showing a state when an optical disc is inserted in the embodiment of the present invention. Schematic sectional view showing the state of the transport device when the disc is inserted
DESCRIPTION OF SYMBOLS 1 Feed plate 2, 3 Side plate 4, 5 Bearing groove 6, 7 Rotating support shaft 8 Sleeve support part 8a, 8b, 8c Projection piece 9 Feed roller 10 Roller shaft 11 Sleeve 12, 13 Rubber roller 14, 15 Bearing 16 Gear 17 Optical disk guide Part 21 lower chassis 22 feed motor 23 gear train 24 upper chassis 25, 26, 27 ridge 28 clamp part

Claims (2)

A feed roller having a sleeve fitted in the central portion of the roller shaft and rubber rollers fitted on both sides thereof, the roller shaft being rotatably supported at both ends of the feed roller, and a sleeve in the central portion of the feed roller. A feed plate having a sleeve support portion for supporting, and the sleeve is integrally provided with an optical disc guide portion for guiding an optical disc, provided with projecting pieces on both sides of the sleeve support portion of the feed plate, and both sides of the optical disc guide portion. An optical disk transport apparatus comprising a mounting hole for press-fitting into the protruding piece . An optical disc apparatus comprising: the optical disc transport device according to claim 1; and at least one of an optical disc reproducing unit and an optical disc recording unit .

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