JPH0611116U - Disc player dust removal structure - Google Patents

Abstract

(57) [Abstract] [Object] The present invention relates to a dust removing structure of a disc player, and by providing a dust removing member on a cable holder, it has a simple structure and requires almost no installation space. Prior to the present invention, there is provided a disc dust removing device which can automatically remove dust on the surface of an objective lens. A dust removing structure for a disk player, wherein a turn carriage inverts an optical pickup to perform reproduction while moving the optical pickup, the cable being provided on the turn carriage and connected to the optical pickup. A dust removing member is provided on the entry / exit side of the optical pickup of the cable holder so as to come into contact with the objective lens surface of the optical pickup when the turn carriage comes in and out.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a dust removal structure for a disc player, in which a disc player that reproduces while moving an optical pickup with respect to a disc loaded in a deck, removes dust attached to an objective lens surface of the optical pickup. The present invention relates to a dust removal structure that can be automatically removed when starting regeneration.

[0002]

[Prior art]

 In this type of disc player, if it has not been used for a long period of time, dust adheres to and accumulates on the objective lens surface of the optical pickup during this period, which causes the information recorded on the disc to be reproduced during the next reproduction. It causes a reading error. Therefore, for example, as disclosed in Japanese Patent Laid-Open No. 61-104341, there is known a structure in which a special dust removing structure is prepared to remove dust on the objective lens surface.

[0003]

[Problems to be solved by the device]

 However, for this purpose, the dust removal structure as described above is mounted on the disc player, so that a required installation space is required, and the cost for specially providing the device becomes considerably high. There is a point. As a disc player, here, the optical pick-up is inverted by 180 degrees by a turn carriage, and selectively transferred to one of guide rails provided so as to face both sides of the disc loaded on the deck. Since reproduction is performed while moving the optical pickup on the rails, taking advantage of such a structure, the structure is as simple as possible, and dust is reliably removed from the objective lens surface. A device that can realize

The present invention has been made in view of such a conventional technique, and a turn flat includes a flexible flat plate that is connected to an optical pick-up so as to face a support portion of an optical pickup that moves in and out of the turn carriage. Focusing on the fact that a cable holder is provided to accommodate the cable, this disc has a simple structure and can automatically remove dust from the objective lens surface before starting each playback. The purpose of the present invention is to provide a structure for removing dust.

[0005]

[Means for Solving the Problems]

 The present invention is a dust removing structure of a disc player in which an optical pickup is reversed by a turn carriage to perform reproduction while moving the optical pickup, which is provided on the turn carriage and connected to the optical pickup. A cable and a dust removing member provided on the entry / exit side of the optical pickup of the cable holder so as to come into contact with the objective lens surface of the optical pickup when the turn carriage moves in and out. Characterize.

[0006]

[Action]

 In the present invention, because of the above-mentioned configuration, when the optical pickup moves in and out of the guide rail to the turn carriage for reproduction, the objective lens surface of the optical pickup moves out of the turn carriage into the cable holder in the moving area of the optical pickup. The dust removing member provided can be swept, and the dust adhering to and depositing on the objective lens surface is automatically removed. Moreover, the dust removing member only needs to be mounted on the cable holder, no special installation space is required, and the structure thereof is extremely simple.

[0007]

【Example】

 An embodiment of the present invention will be specifically described below with reference to the drawings. 1 to 7 are views showing a dust removing structure of a disc player according to the present invention. First, the configuration will be described. In FIG. 1, 100 is a disc player, and 101 is its dust structure. Reference numeral 1 denotes a chassis having a substantially U-shaped side view, and guide rails 2A and 2B are provided on upper and lower extending portions 1A and 1B, respectively. Further, a spindle motor 3 is attached to the tip of the extending portion 1B, and a rotating shaft 3A thereof is equipped with a deck 4 for a disk D. Then, the objective lens 5A of the optical pickup 5 is positioned so as to face either side of the disk D loaded on the deck 4, and the optical pickup 5 guides the optical pickup 5 so as to be moved and scanned in the radial direction of the disk D. You will be guided to either 2A or 2B.

A turn carriage 6 that receives the optical pickup 5 from the guide rails 2 A and 2 B is rotatably supported on the chassis 1 via a pivot shaft 7. The turn carriage 6 is provided for the optical pickup 5. A cable holder 9 for accommodating the flexible flat cable 8 is provided in a holding area 6A for the optical pickup 5 so as to vertically oppose thereto. At the front edge of the cable holder 9 which is the entrance / exit side of the optical pickup 5, dust such as a brush is touched so as to come into contact with the surface of the objective lens 5A when the optical pickup 5 enters / exits the turn carriage 6. A removal member 10 is attached.

In this embodiment, the guide rails 2A and 2B are pivotally supported by the extension portions of the chassis 1 by the pivots 11, and can be tilted within a restricted range of, for example, about 1 to 2 degrees. When the optical pickup 5 is moved to the turn carriage 6, the optical pickup 5 is tilted while it is held in a horizontal state (parallel to the disk surface) at the time of reproduction. Further, the turn carriage 6 side is equipped with guide members 12 and 13 for guiding the optical pickup 5 when receiving the optical pickup 5 from the ends of the guide rails 2A and 2B, and holding and fixing means (not shown). is there.

The turn carriage 6 is a reversing drive means provided on the chassis 1, and is pivotally driven about a pivot 7. That is, the reversing drive means is equipped with a cam drive mechanism (composed of a cam groove provided in the chassis 1 and the driven gear 14 and a cam pin guided in the cam groove (both not shown)). In addition, the cam mechanism is rotated 90 degrees, and at the beginning and end of the cam mechanism, the cam mechanism is moved up and down.

Next, the operation will be described. In such a disc player 100, as shown in FIG. 2 or FIG. 7, the optical pickup 5 can be transferred to one of the guide rails 2A and 2B by the action of the turn carriage 6. For example, by accessing the objective lens 5A to the lower surface of the disc D, the optical pickup 5 (see FIG. 2) in the reproducing state is accessed, and by accessing the objective lens 5A to the upper surface of the disc D, the reproducing state is reproduced. (See FIG. 7), first, the guide rail 2 B is tilted, and the turn carriage 6 is slightly lowered by the cam drive (see FIG. 3), and the optical pickup 5 is held in the holding area of the turn carriage 6. 6A (see FIG. 4), then turn the turn carriage 6 180 degrees and raise it slightly (see FIG. 5). In this state, transfer the optical pickup 5 from the turn carriage 6 to the guide rail 2A. (See FIG. 6).

When the optical pickup 5 transfers from the turn carriage 6 to the guide rail 2A, the dust removing member 10 sweeps the objective lens surface in the moving area of the optical pickup 5 on the turn carriage 6. Become. This is the same when the optical pickup 5 is transferred from the turn carriage 6 to the guide rail 2B (movement in the opposite direction in FIG. 4), and in this way, prior to the start of the reproducing operation, the objective lens 5A Dust that has adhered to and accumulated on the surface can be removed. Moreover, since the dust removing member 10 is provided in the moving area for the transfer operation of the optical carriage, no special installation space is required and the structure is simply attached to a part of the cable holder 9. Just an extremely simple one.

[0013]

[Effect of device]

 As described in detail above, the present invention is a disk player in which an optical pickup is reversed by a turn carriage to perform reproduction while moving the optical pickup, and a cable for accommodating a cable connected to the optical pickup. Since the dust removing member is provided on the optical pickup input / output side of the holder so that it comes into contact with the objective lens surface of the optical pickup when the optical pickup comes in / out, it has a simple structure and each time before playback, before starting. The dust on the objective lens surface can be automatically removed. Therefore, the reading of information from the disc is always of high quality.

[Brief description of drawings]

FIG. 1 is a schematic side view showing an embodiment of a dust removing device of a disc player according to the present invention.

FIG. 2 is a schematic side view showing a reproduction state in the embodiment shown in FIG.

FIG. 3 is a schematic side view showing a transfer state of the optical pickup in the embodiment shown in FIG.

FIG. 4 is a schematic side view showing a transfer state of the optical pickup in the embodiment shown in FIG.

5 is a schematic side view showing an inverted state of the turn carriage in the embodiment shown in FIG.

FIG. 6 is a schematic side view showing a transfer state of the optical pickup in the embodiment shown in FIG.

FIG. 7 is a schematic side view showing another reproduction state in the embodiment shown in FIG.

8 is a schematic front view showing a mounting state of the dust removing member in the embodiment shown in FIG.

[Explanation of symbols]

 1 Chassis 1A, 1B Extensions 2A, 2B Guide Rail 3 Spindle Motor 4 Deck 5 Optical Pickup 5A Objective Lens 6 Turn Carriage 7 Axis 9 Cable Holder 10 Dust Removal Member 100 Disc Player

Claims (1)

[Scope of utility model registration request] 1. A dust removing structure for a disc player, wherein a turn carriage reverses an optical pickup to perform reproduction while moving the optical pickup, the dust removing structure being provided on the turn carriage and connected to the optical pickup. A cable and a dust removing member provided on the entry / exit side of the optical pickup of the cable holder so as to come into contact with the objective lens surface of the optical pickup when the entry / exit of the turn carriage is performed. The dust removal structure of the disc player.