JPH035012Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a display player that optically picks up and reproduces digital signals recorded in the form of unevenness on the disk surface. The present invention relates to a so-called horizontal loading type disk player in which a transporting body slides horizontally with respect to a player main body. (B) Prior Art There are video disc players and audio disc players as disc players that optically reproduce digital signals recorded on discs. In the early stages of commercialization, the audio disc player generally adopted a vertical loading system in which the disc was mounted vertically and the rotational axis of the disc was set horizontally for playback. However, with the vertical loading method, the thickness of the disc player cannot be reduced to less than the diameter of the disc (approximately 12 cm), so a thin disc player cannot be manufactured.
Therefore, as shown in Utility Model Application Publication No. 59-36057,
A disk transport body is provided that slides in a direction perpendicular to the vertical rotation axis for rotating the disk, that is, in the front-rear direction of the disk player, and the disk is placed in the disk storage portion of the disk transport body in a protruding state. A horizontal loading type disk player, in which the disk transport body is moved into the disk player and the disk is placed at a playback position to perform playback, has been proposed and commercialized. If the horizontal loading type disk player is used, since the disk is mounted horizontally on the disk player, the thickness of the disk player can be reduced, and there are advantages such as eliminating design constraints. Therefore, in the case of the horizontal loading method, it is required that the disk transport body slide smoothly over a long distance. Therefore, the disk transport body and guide rails are made of a material that is resistant to temperature changes, such as aluminum die-casting, to suppress dimensional changes caused by ambient temperature, and a large number of ball bearings are used to move the disk. Conventionally, methods have been used to improve the sliding of the transport body. (c) Problems that the invention aims to solve However, careful selection of materials and the use of ball bearings are undesirable as they increase costs and increase the number of parts, and it is difficult to use materials with precise dimensions. Since fine adjustments are required to take advantage of the features, the disc player itself has the disadvantage of being more expensive than a vertical loading type. (d) Means for solving the problems The present invention was created in view of the above points, and even if the disk transport body is made of synthetic resin,
The objective is to provide a disk player designed to slide smoothly, which includes a disk transport body having grooves on both sides, and a fixed support supporting a guide roller that abuts the groove on one side of the disk transport body. It is characterized in that it includes a shaft and a movable support shaft that supports a guide roller that comes into contact with a groove on the other side. (E) Effect According to the present invention, the guide roller supported by the movable support shaft presses the disk transport body due to the urging force generated from the movable support shaft, so that the disk transport body is supported by the fixed support shaft. By sliding along the guide rollers, smooth sliding of the disk transport body can be achieved. (F) Embodiment Figure 1 is a plan view showing an embodiment of the present invention.
Reference numeral 1 denotes a disk transfer body having a disk storage portion 2 in which a disk is placed, and substantially V-shaped first and second grooves 3 and 4 on the side surfaces; 5 corresponds to the first groove 3 of the disk transfer body 1 ; 6 is a second guide roller that is in contact with the first groove 3; 7 is a third guide roller that is in contact with the second groove 4 of the disk transport body 1 ;
A guide roller 8 is a fourth guide roller that also comes into contact with the second groove 4. However, the second
As is clear from the cross-sectional view in the figure, the first guide roller 5 is supported by the first fixed support shaft 9, and the third guide roller 7 is supported by the first movable support shaft 10. Although not shown, the second guide roller 6 is supported by a second fixed support shaft, and the fourth guide roller 8 is supported by a second movable support shaft. Returning to FIG. 1 again, the operation will be explained. FIG. 1 shows a state where the disk transport body 1 is located inside the disk player, that is, at the playback position. When the eject button (not shown) is pressed, the drive source (not shown) When the driving force of
8 to 8 as guides to slide in the direction of arrow A. Then, when the disc storage section 2 is completely exposed outside the disc player, that is, at the protruding position, the sliding movement in the direction of the arrow A is stopped. When a disk is placed in the exposed disk storage section 2 and the start button or the disk transfer body 1 is pressed, the disk transfer body 1 slides in the direction of arrow B and stops at the playback position shown in Figure 1. , then playback begins. By the way, as shown in FIG. 3, the first guide roller 5 is rotatably fitted to a shaft portion 9a of a fixed support shaft 9 fixed to the chassis 11. Also,
A screw 12 is screwed into the center screw hole 9b of the shaft portion 9a of the fixed support shaft 9, and a washer 13 prevents the first guide roller 5 from falling off the shaft portion 9a. The tip portion of the first guide roller 5 is in contact with a substantially V-shaped first groove 3 of the disk transport body 1 , and when the disk transport body 1 slides, the first guide roller 5 is moved to the fixed position. It rotates around the shaft portion 9a of the support shaft 9. The fixed support shaft 9
is made of synthetic resin that is integrally molded on the chassis 11 by outsert molding, and the first
Since the guide roller 5 is made of oil-impregnated resin, the fixed support shaft 9 is firmly fixed to the chassis 11, and the first guide roller 5 rotates smoothly around the shaft portion 9a. Second guide roller 6
The support and structure of the guide roller 5 are exactly the same as those of the first guide roller 5, and the explanation thereof will be omitted. The third guide roller 7, as shown in FIG . It is in contact with 4. Further, a screw 14 is screwed into the center screw hole 10b of the movable support shaft 10, and a washer 15 prevents the third guide roller 7 from coming off. As shown in FIG. 5, the movable support shaft 10 is integrally molded at the tip of an elastic arm 17 extending from a base 16 fixed to the chassis 11 by outsert molding. Therefore, the movable shaft 10
is movable in the direction of arrow C or arrow D by the elasticity of the elastic arm 17, and if the width of the disk transport body 1 is made slightly larger than the distance between the first and third guide rollers 5 and 7, the The third guide roller 7 urges the disk transport body 1 in the direction of arrow D, and the disk transport body 1 slides smoothly while being pressed against the first guide roller 5. Note that the support and structure of the fourth guide roller 8 are exactly the same as those of the third guide roller 7, and a description thereof will be omitted. The disk transport body 1 is made of synthetic resin molding, and its dimensions change according to changes in ambient temperature. Therefore, for example, if all the guide rollers are supported by fixed support shafts, the ambient temperature will rise and when the disk transfer body 1 expands, there will be a risk that the disk transfer body 1 will stop moving, and the ambient temperature will decrease. However, when the disk transporting body 1 contracts, a gap is created between the guide roller and the disk transporting body, and there is a risk that play may occur during sliding. In contrast, in the present invention, the guide roller placed on one side of the disk transport body 1 is supported by a movable shaft, so that changes in the dimensions of the disk transport body caused by changes in ambient temperature can be absorbed. This allows for smooth sliding at all times. (G) Effects of the Invention As described above, according to the present invention, it is possible to provide a disk player equipped with a disk transport body that slides smoothly between the playback position and the protruding position. In addition, since a guide roller supported by a fixed support shaft is in contact with one side of the disk transport body and a guide roller supported by a movable support shaft is in contact with the other side, dimensional errors in the disk transport body may occur. It is possible to provide a disk player that can absorb dimensional changes caused by temperature changes and that can use a synthetic resin disk transport body. Furthermore, all the support shafts are integrally molded into the chassis by outsert molding, and the guide for the disk transport body can be created by simply attaching a guide roller to the integrally molded support shaft, making it possible to create an inexpensive disk player with a simple configuration. I can provide it.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing an embodiment of the present invention, Fig. 2 is a cross-sectional view thereof, Fig. 3 is a cross-sectional view showing an example of a fixed support shaft used in the present invention, and Fig. 4 is a plan view showing an example of the fixed support shaft used in the present invention. FIG. 5 is a sectional view showing an example of the movable support shaft used, and a plan view thereof. Explanation of main drawing numbers, 1 ...Disk transport body, 3,
4...Groove, 5...First guide roller, 7...Second
Guide roller, 9...fixed support shaft, 10...movable support shaft, 17...elastic arm.

Claims (1)

[Scope of utility model registration request] A disk player having a disk storage section and a disk transporting body that slides in a direction perpendicular to the rotational axis of the disk, a pair of grooves provided on both sides of the disk transporting body, and one of the pair of grooves. a fixed support shaft that rotatably supports a guide roller that contacts the other of the pair of grooves, and a movable support shaft that rotatably supports the guide roller that contacts the other of the pair of grooves; A disc player characterized in that the disc player is configured to slide along guide rollers each supported by a movable support shaft.