JP3093922B2 - Disc player - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc player such as a compact disc.

[0002]

2. Description of the Related Art A conventional disk player will be described with reference to FIG. 3A and 3B show the configuration of a conventional disk player, wherein FIG. 3A is a schematic plan view and FIG. 3B is a schematic sectional view. In FIG. 3, 1 is a mechanism frame, 2 is a substrate, 3 is a turntable which is rotated by a motor (not shown) fixed to the substrate 2, 4 is a clamper for positioning and holding a disk inserted on the turntable,
5 is a clamper arm which is attached to the substrate 2 and rotates, 6
Denotes a pickup for irradiating a disc with light through a lens 6a to read out a signal; 7, a pickup support for mounting and moving the pickup 6; 8, a feed screw; 9, a guide shaft;
Is a hole provided in the top plate of the mechanism frame 1, 16 is a hole provided in the clamper arm 5, and 17 is a spring for urging the clamper arm 5 downward. The feed screw 8, the guide shaft 9, and the pickup moving motor 10 are attached to the substrate 2.

In this conventional disk player, before the disk is inserted, the clamper arm 5 is supported upward by a means (not shown) against a spring 17, and as shown in FIG.
Are located above the turntable 5. A disk insertion slot (not shown) is provided on the front surface (the surface indicated by an arrow 18 in the figure) of the mechanism frame 1. When a disk is inserted through the disk insertion slot, the disk is transferred onto the turntable 3 by a transfer means (not shown). Transfer to And
When the disk is transferred onto the turntable 3, the spring 1
The clamper arm 5 urged downward at 7 rotates and the clamper 4 clamps the turntable 3 to enable reproduction. The reproduction is performed by rotating the turntable 3 and irradiating the disc with light from the pickup 6 attached to the pickup support 7 to read out a signal. The pickup support 7 is positioned and held by a feed screw 8 and a guide shaft 9, and is rotated by a pickup moving motor 10 via a belt or a gear, so that the pickup support 7 is moved in the radial direction of the disk. For example, from the inside to the outside), the entire surface of the disc can be reproduced.

In this conventional disk player, a hole 15 provided in the mechanism frame 1 and a clamper are provided at the time of assembly or repair in order to eliminate a reproduction failure in which the sound is interrupted by dust or dirt on the lens 6a of the pickup 6. The lens 6a of the pickup 6 has been cleaned with a cotton swab or the like through the hole 16 provided in the arm 5.

[0005]

However, in the above-described conventional configuration, the positions of the holes 15 and 16 for cleaning the lens 6a of the pickup 6 and the position of the lens 6a of the pickup 6 are vertically aligned. For this reason, dust, dirt, and the like that have entered through the holes 15 and 16 after cleaning may adhere to the lens 6a again, causing defective reproduction.

SUMMARY OF THE INVENTION An object of the present invention is to provide a disc player which prevents dust and dirt from re-adhering after cleaning a lens of a pickup and enables good reproduction.

[0007]

According to the disk player of the present invention, a cleaning hole is provided in a top plate of a mechanism frame at a position deviated from directly above a lens of a pickup at a stop position, and a cleaning hole is provided on the top plate of the mechanism frame. An opening is provided in the clamper arm on a line connecting the hole and the lens of the pickup at the stop position.

[0008]

According to the structure of the present invention, a cleaning hole is provided in the top plate of the mechanism frame at a position deviated from directly above the lens of the pickup at the stop position, and the hole of the top plate of the mechanism frame is located at the stop position. By providing an opening in the clamper arm on the line connecting the pickup lens, when cleaning or repairing the pickup lens after assembly is completed, inserting a cotton swab etc. from the hole in the top plate of the mechanism frame will A cotton swab reaches the lens of the pickup through the opening of the arm, and dust and dirt on the lens can be removed. And, since the cleaning hole is provided in the top plate of the mechanism frame at a position off the pickup lens at the stop position, dust and dust entering from the cleaning hole of the top plate after cleaning And the like do not directly adhere to the lens of the pickup, so that re-adhesion of dust and dirt after cleaning can be prevented.

[0009]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a configuration of a disc player according to a first embodiment of the present invention, wherein FIG.
(B) is a schematic sectional view thereof. In FIG. 1, reference numeral 11 denotes a hole provided on the top plate of the mechanism frame 1 for cleaning the lens 6a of the pickup 6, and reference numeral 12 denotes a hole provided on the clamper arm 5 for cleaning. Note that the same components as those in FIG. 3 are denoted by the same reference numerals, and detailed description is omitted.

The disc player includes a turntable 3 on which a disc is placed and rotated, and a turntable 3
Arm 5 on which a clamper 4 for clamping the disk from above is mounted, a pickup 6 having a lens 6a on the upper surface and disposed below the disk and movably provided in the radial direction, and a pickup 6 And a mechanism frame 1 having a turntable 3, a clamper arm 5, a pickup 6, and a pickup moving means. The pickup moving means includes a pickup support 7, a feed screw 8, a guide shaft 9, a pickup moving motor 10, a belt and a gear, and the like. This is a mechanism for moving the table 7 in the radial direction of the disk. The above configuration is the same as the conventional example.

The feature of this embodiment is that a hole 11 for cleaning is provided on the top plate of the mechanism frame 1 at a position off the lens 6a of the pickup 6 at the stop position in FIG. The opening 12 is provided in the clamper arm 5 on the line connecting the hole 11 of the plate and the lens 6a of the pickup 6 at the stop position. With this configuration, when cleaning or repairing the lens 6a of the pickup 6 after assembly is completed, the mechanism frame 1
When a cotton swab or the like is inserted from the hole 11 of the top plate of the pickup 6, the lens 12 of the pickup 6 is inserted through the opening 12 of the clamper arm 5.
A cotton swab reaches a, and dust and dirt on the lens 6a can be removed. Further, since the cleaning hole 11 is provided on the top plate of the mechanism frame 1 at a position deviated from directly above the lens 6a of the pickup 6 at the stop position, dust or dirt entering from the hole 11 from above after cleaning is removed. Does not directly adhere to the lens 6a of the pickup 6,
Reattachment of dust and dirt after cleaning can be prevented, and good reproduction can be performed without interruption of sound during reproduction.

Next, a second embodiment is shown in FIG. FIG.
FIG. 6 is a schematic plan view showing the configuration of a disc player according to a second embodiment of the present invention. 2 and FIG. 1 and FIG.
The same components as those described above are denoted by the same reference numerals, and description thereof will be omitted. In this embodiment, the position of the cleaning hole 13 provided in the top plate of the mechanism frame 1 and the position of the opening 14 provided in the clamper arm 5 are different from those of the first embodiment, and other configurations are the same as those of the first embodiment. This is the same as in the first embodiment. In the first embodiment, the hole 11 of the top plate and the opening 12 of the clamper arm 5 are provided.
Is provided directly above the locus on which the lens 6a of the pickup 6 moves. However, in the second embodiment, the hole 13 of the top plate is provided so as to be shifted from the locus on which the lens 6a moves. The opening 14 provided in the clamper arm 5 on the line connecting the hole 13 and the lens 6a of the pickup 6 at the stop position is not a hole but a modified end of the clamper arm 5.

According to this embodiment, as in the first embodiment, when cleaning or repairing the lens 6a of the pickup 6 after assembly is completed, a cotton swab or the like is inserted through the hole 13 of the top plate of the mechanism frame 1. The swab reaches the lens 6a of the pickup 6 through the opening 14 of the clamper arm 5, and dust and dirt on the lens 6a can be removed. Since the hole 13 for cleaning is provided on the top plate of the mechanism frame 1 at a position deviated from directly above the lens 6a of the pickup 6 at the stop position, the hole 1
Dust, dirt, and the like from above entering from 3 do not directly adhere to the lens 6a of the pickup 6, so that re-adhesion of dust and dirt after cleaning can be prevented, and good reproduction can be performed. .

In the above embodiment, the positions of the cleaning holes 11 and 13 provided in the top plate of the mechanism frame 1 and the openings 12 and 14 provided in the clamper arm 5 are examples. Further, in the above embodiment, the stop position of the pickup 6 is the left end (on the drawing) in the movement range of the pickup 6 as shown in FIGS. 1 and 2, but is not limited to this. That is, a specific position is set within the movement range of the pickup 6, and holes 11 and 13 are provided on the top plate of the mechanism frame 1 at a position deviated from directly above the lens 6a of the pickup 6 at the specific position. The specific position within the movement range of the pickup 6 is expressed as a stop position, and may be expressed as a standby position or an initial position instead of the stop position.

[0015]

According to the disc player of the present invention, a cleaning hole is provided in the top plate of the mechanism frame at a position deviated from directly above the pickup lens at the stop position, and the hole of the top plate of the mechanism frame and the stop position are provided. By providing an opening in the clamper arm on the line connecting the pickup lens in the above, when cleaning or repairing the pickup lens after assembly is completed, insert a cotton swab etc. from the hole in the top plate of the mechanism frame, A cotton swab reaches the lens of the pickup through the opening of the clamper arm,
It can remove dust and dirt from the lens. And, since the cleaning hole is provided in the top plate of the mechanism frame at a position off the pickup lens at the stop position, dust and dust entering from the cleaning hole of the top plate after cleaning And the like do not directly adhere to the lens of the pickup, so that re-adhesion of dust and dust after cleaning can be prevented, and good reproduction can be performed.

[Brief description of the drawings]

FIG. 1 is a schematic plan view and a schematic cross-sectional view showing a configuration of a disc player according to a first embodiment of the present invention.

FIG. 2 is a schematic plan view showing a configuration of a disc player according to a second embodiment of the present invention.

FIG. 3 is a schematic plan view and a schematic sectional view showing the configuration of a conventional disk player.

[Explanation of symbols]

Reference Signs List 1 mechanism frame 3 turntable 4 clamper 5 clamper arm 6 pickup 6a lens 7 pickup support (pickup moving means) 8 feed screw (pickup moving means) 9 guide shaft (pickup moving means) 10 pickup moving motor (pickup moving means) 11, 13 Holes provided in the top plate of the mechanism frame 12, 14 Openings provided in the clamper arm

Continuation of the front page (72) Inventor Yasushiya Toyama 1006 Kazuma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (58) Field surveyed (Int.Cl. ⁷ , DB name) G11B 33/12 301 G11B 7 / 12

Claims (1)

(57) [Claims] 1. A turntable on which a disk is mounted and rotated, a clamper arm provided above the turntable and having a clamper mounted thereon for clamping the disk from above, and a lens on an upper surface having a lens below the disk And a pickup moving means for moving the pickup in the radial direction of the disc, and a mechanism frame containing the turntable, the clamper arm, the pickup and the pickup moving means. A disc player provided with a cleaning hole in a top plate of the mechanism frame at a position deviated from directly above a lens of the pickup at a stop position, and a hole in the top plate of the mechanism frame and a hole at the stop position. The line on the line connecting the pickup lens Disc player, characterized in that an opening is provided in Ranpaamu.