JP2877655B2 - Guide device for optical pickup - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a guide device for guiding the movement of an optical pickup for reading a signal recorded on a disk.

[0002]

2. Description of the Related Art Optical disk players that optically read signals recorded on a disk using an optical pickup have become widespread, and such optical pickups use an electric motor in the radial direction of the disk. It is configured to be moved by a driving force. Since such an optical pickup needs to accurately read out a signal recorded on the disk, it is necessary to accurately move the disk in the radial direction. The moving operation is guided by the guide shaft of the book. An apparatus for guiding the movement of an optical pickup by using two guide shafts is disclosed, for example, in Japanese Patent Application Laid-Open No. 3-205662.

[0003]

As a typical optical disc player, a CD player is well known. Some of such CD players are configured to listen to reproduced sound by headphones. There is a headphone stereo type portable tuple CD player.
Since such a portable CD player is used while being carried, it is required to be small, especially thin.

The technique described in the above-mentioned publication is configured so that the movement of the optical pickup is guided by two guide shafts, so that the assembling operation is easy when the optical pickup is incorporated in a small disk player. There is a problem that can not be done.

An object of the present invention is to provide a guide device for an optical pickup in which this point is improved.

[0006]

The guide device according to the present invention comprises:
A pickup support member to which an optical pickup for reading a signal recorded on a disk is fixed, a guide shaft slidably supporting one end of the pickup support member, and a pickup support provided on a fixed substrate and supporting the pickup. A guide rail is engaged with a guide groove formed in the member and slidably supports the other end of the pickup support member.

[0007]

According to the present invention, a small-width rail portion is formed on the lower surface of the guide rail so as to abut on a surface forming a guide groove formed in the pickup supporting member.

[0008]

FIG. 1 is a bottom view of a main part showing a guide device according to the present invention, FIG.
FIG. 3 is a sectional view of a main part showing an assembled state.

In FIG. 1, reference numeral 1 denotes a fixed substrate on which a motor (not shown) for driving a disk is mounted and fixed, and 2 denotes a pickup support on which an optical pickup 3 for reading signals from the disk is fixed. It is a member, and mounting leg pieces 4, 5, and 6 are formed.

Reference numeral 7 denotes a guide shaft which is attached and fixed to the fixed substrate 1 by screws 8, and slides one end of the pickup supporting member 2 by being inserted into holes 4a and 5a formed in the attachment leg pieces 4 and 5. It has the function of movably supporting. Reference numeral 9 denotes a guide rail provided on the fixed substrate 1, which engages with a guide groove 6a formed on the mounting leg piece 6 to slidably support the other end of the pickup support member 2. have.

In such a configuration, the guide rail 9
At the position where the engagement with the guide groove 6a of the lower surface forming the groove starts, a small-width rail portion 9a that contacts the surface S forming the guide groove 6a is formed so as to be parallel to the guide shaft 7. I have.

The guide device of the present invention is constructed as described above. Next, the assembling operation will be described. The operation of attaching the pickup support member 2 to the fixed substrate 1 is performed by engaging a guide groove 6 a formed in the attachment leg piece 6 of the pickup support member 2 with the guide rail 9.
This is performed by attaching and fixing the guide shaft 7 inserted into the holes 4 a and 5 a formed in the attachment leg pieces 4 and 5 with screws 8.

Then, in the process of the mounting operation, the engagement operation of the guide groove 6a with the guide rail 9 is performed from obliquely below as shown in FIG. When performing such an engagement operation, the small width rail portion 9a is formed on the lower surface of the guide rail 9, so that the engagement operation can be performed smoothly. When the guide groove 6a is engaged with the guide rail 9 as shown in FIG. 2 and the opposite side of the pickup supporting member 2, that is, the mounting leg pieces 4 and 5 is lifted, the state shown in FIG. 3 is obtained. , The guide shaft 7 is screwed 8
Is attached to and fixed to the fixed substrate 1.

By performing such an operation, an operation of attaching the pickup support member 2 to the fixed substrate 1 is performed.
The pickup supporting member 2 is held in a state in which the guide shaft 7 and the guide rail 9 guide the movement of the disk in the radial direction. Since the pickup support member 2 is supported by the guide rail 9 at the wide portion 9b which is the upper surface of the guide rail 9,
Even if the sliding displacement operation of the pickup supporting member 2 is repeatedly performed, the scraping of the contact portion can be reduced. Therefore, the height of the pickup supporting member 2, that is, the positional relationship of the optical pickup 3 with respect to the disk can be accurately maintained.

Further, in this embodiment, when the fixed substrate 1 is made of synthetic resin, if the guide rails 9 are integrally formed, the number of components is reduced, so that the structure is simplified. It has a great effect on the production.

[0016]

According to the present invention, there is provided a pickup support member on which an optical pickup is fixed, slidably supporting one end of the pickup support member and a lower surface of a guide rail engaging with a guide groove formed in the pickup support member. Since the narrow rail portion is formed, the engagement operation between the guide groove and the guide rail can be performed smoothly. Therefore, the guide device of the present invention can easily perform the work of assembling the optical pickup system, and has a very great effect when implemented in a small disk player.

[Brief description of the drawings]

FIG. 1 is a bottom view of a main part showing a guide device of the present invention.

FIG. 2 is a cross-sectional view of a main part showing a state during the assembly of the present invention.

FIG. 3 is a sectional view of a main part showing an assembled state of the present invention.

[Description of Signs] 1 Fixed substrate 2 Pickup support member 3 Optical pickup 6a Guide groove 7 Guide shaft 9 Guide rail 9a Small rail portion

Claims (2)

(57) [Claims] 1. A pickup supporting member optical pickup is fixed to read the signal recorded on the disk, the disk end of the pickup supporting member
A guide shaft slidably supported in a radial direction, and a guide groove provided in the fixed substrate in parallel with the guide shaft and engaged with a guide groove formed in the pickup support member, and the other end of the pickup support member become more and slidably supported to the guide rail, said guide rail
Before the narrow rail section engageable with said guide groove of the lower surface to form abuts the surfaces forming the guide groove in a position <br/> initiated
A guide device for an optical pickup, wherein the guide device is formed so as to be parallel to the guide shaft . 2. The guide rail is mounted on a fixed substrate made of synthetic resin.
The guide device according to claim 1, wherein the guide device is integrally formed .