JPH0757404A - Disk device - Google Patents

Abstract

PURPOSE:To obtain a inexpensive disk device by reducing the number of parts. CONSTITUTION:This disk device is composed of a guide shaft 3 for a pickup and a receiving base 5 for fixing the guide shaft 3 onto a chassis 1, and a louvered part 2 formed on the chassis 1 is fitted into a slit 5a of the receiving base 5 for the guide shaft 3. By this method, the receiving base 5 is positioned, while the guide shaft 3 is also positioned as well.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk device, and more particularly to a disk device suitable for an optical disk or the like.

[0002]

2. Description of the Related Art A conventional technique will be described with reference to FIG. FIG. 6 is a view showing a fixing structure of the guide shaft of the pickup of the disk device. A pedestal 32 for fixing the guide shaft 31 of the pickup is provided on the chassis 30, and the recess 32 a formed in the pedestal 32 is provided with the guide shaft 31. One end 31a is fitted and the pedestal 32 is fixed to the hole 30a of the chassis 30 with the screw 33.

[0003]

However, since the other end of the guide shaft 31 is also fixed using the same pedestal, the number of parts is increased and the cost is increased. In addition, the positioning of the guide shaft 31 in the horizontal direction is difficult, and it takes time for adjustment, so that the efficiency of the assembling work is deteriorated. Therefore, the present invention has been made in view of the above problems,
The purpose is to reduce the number of parts and to provide an inexpensive disk drive.

[0004]

In order to achieve the above-mentioned object, the present invention provides a disk device comprising a guide shaft of a pickup and a pedestal for fixing the guide shaft on a chassis. In addition to forming the cut-and-raised part, the pedestal is provided with a slit into which the cut-and-raised part is fitted, so that the pedestal can be positioned and the guide shaft can be positioned. Further, a motor for driving a pickup is attached to the cut and raised portion.

Further, a cut-and-raised portion for fixing the guide shaft of the pickup is provided, a receiving portion for receiving the guide shaft is formed in the cut-and-raised portion, and a slit for caulking is formed, and the pedestal and the slit are formed. The guide shaft is fixed by crimping the portion between them. A pickup is a disk device in which both sides of the pickup are supported by guides and is movable on the guides, wherein one of the guides is a round bar guide shaft and the other is a chassis cut-and-raised. At the same time, a resin member having elasticity is provided between the support portion formed on the pickup and the cut and raised portion.

[0006]

Since the cut-and-raised part formed on the chassis is fitted in the slit of the pedestal of the guide shaft, the pedestal can be accurately positioned by the cut-and-raised part. Therefore, the guide shaft is also positioned, the time for positioning is shortened, and the manufacturing cost can be reduced. Further, since the motor for driving the pickup is attached to the cut-and-raised part, the cut-and-raised part can be used for both positioning and motor mounting, and the cost can be easily reduced.

Further, since the end portion of the guide shaft is fixed by crimping the cut-and-raised parts provided on the chassis, an expensive pedestal is not required and the cost is reduced. Further, since the pickup of the present invention is configured such that one of the pickups can be moved by using the cut-and-raised part formed on the chassis through the sliding member made of the resin material as a guide, an expensive guide shaft is not required and the manufacturing cost can be reduced. It will be possible.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to FIGS. 1 and 2 are views showing a first embodiment of the present invention. Reference numeral 1 is a chassis, and a cut-and-raised portion 2 for positioning is formed on the chassis 1. Reference numeral 3 is a guide shaft that guides the pickup 4, and the guide shaft 3 is supported by a pedestal 5. The pedestal 5 is a slit 5 for inserting and positioning the cut-and-raised 2 of the chassis 1.
a, a pad 5b for positioning the guide shaft 3 in the axial direction, and a screw hole 5c for screwing the pedestal 5 into the hole 1a of the chassis 1 with a countersunk screw 6. Also,
The other end of the guide shaft 3 is also fixed to the guide shaft 3 using the same pedestal 51 as the pedestal 5, but the slit 51a of the pedestal 51 has a motor mounting cut-and-raised portion 8 for mounting the pickup driving motor 7. Is to be inserted. The motor mounting cut-and-raised portion 8 is also formed on the chassis 1. In the disk device configured as described above, the pedestal 5 is positioned by the cut-and-raised portion 2, the guide shaft 3, and the screw hole 1a.
Is also positioned and fixed in place. In this embodiment, since the cut-and-raised portion 8 is used for positioning the guide shaft 3 and mounting the motor, it also has the function of downsizing the device.

FIG. 3 shows a second embodiment of the present invention, in which the guide shaft 3 is fixed by using the cut-and-raised parts 10 formed on the chassis 1 without using a pedestal or a countersunk screw.
In the cut-and-raised portion 10, a receiving portion 10a of the U-shaped guide shaft 3 is formed, and a slit 10b for crimping is formed, and a caulking jig 11 is provided between the U-shaped receiving portion 10a and the slit 10b. The guide shaft 3 is fixed by crimping the portion 10c.

FIG. 4 shows a third embodiment of the present invention, in which an L-shaped cut-and-raised portion 12 having a guide shaft 3 formed on a chassis 1 and a guide shaft 3 is fixed to a tip end portion of the cut-and-raised portion. The guide shaft 3 is fixed by the cut-and-raised portion 14 in which the fixing protrusion 13 is formed and the cut-and-raised portion 15 for positioning the guide shaft 3 in the axial direction. In this embodiment, the guide shaft 3 is cut and raised, and the guide shaft 3 is press-fitted from the upper portions of the guide shafts 12 and 13 so that the guide shaft 3 is attached to the chassis 1.
It is fixed on top.

FIG. 5 shows a fourth embodiment of the present invention. The pickup 20 is guided by the guide shaft 3 and the cut-and-raised portion 21 of the chassis 1 and is movable in the direction of the arrow shown. A bearing 21 is formed by two protrusions 20a and 20b on one side of the pickup 20, and the distance between the protrusions 20a and 20b is A. The bearing portion 23 slides on the cut-and-raised portion 21 of the chassis via the resin member 22 made of an elastic material, and the pickup 20 can move. And the resin member 2
2 is a hole 2 into which the protrusion 20a of the pickup 20 is fitted.
2a and a slide contact portion 22b that is in sliding contact with the cut-and-raised portion 21 are formed, and if the dimension C of the lower surface 22c of the hole 22a and the slide-contact surface 22d and the thickness D of the cut-and-raised portion 21 are C <A-D, The dimensions are set so that the relationship holds. The resin member 22
The upper part of may be cut off as shown in FIG. In this embodiment, with this structure, one expensive guide shaft 3 can be saved, and the cost can be reduced.

[0012]

Since the present invention is configured as described above, the number of parts can be reduced, the number of assembling steps can be reduced and the cost can be easily reduced, and the positioning can be performed accurately. Therefore, the reliability of the device is also improved. Moreover, it has excellent features such as easy implementation because of its simple structure.

[Brief description of drawings]

FIG. 1 is an enlarged view of a main part of a first embodiment of the present invention.

FIG. 2 is an explanatory view of the first embodiment of the present invention, (a)
Is a bottom view, (b) is a rear view, and (c) is a front view.

FIG. 3 is a diagram showing a second embodiment of the present invention.

FIG. 4 is a diagram showing a third embodiment of the present invention.

FIG. 5 is a diagram showing a fourth embodiment of the present invention.

FIG. 6 is a perspective view showing a conventional example.

[Explanation of symbols]

 1 chassis 2,8,10,12,14,21 cut and raised 3 guide shaft 4,20 pickup 5,51 pedestal 7 motor 10a receiving portion 10b slit 22 resin member

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shigeru Takemura 7-7-1 Nakagakiuchi, Daito City, Osaka Prefecture Funai Electric Co., Ltd.

Claims (4)

[Claims] 1. A disk device comprising a guide shaft of a pickup and a pedestal for fixing the guide shaft on a chassis, wherein a cut and raised portion is formed on the chassis and the cut and raised portion is formed on the pedestal. A disk device, characterized in that a slit for inserting a slit is provided to position the pedestal and to position the guide shaft. 2. The disk device according to claim 1, wherein a motor for driving a pickup is attached to the cut and raised portion. 3. A cut-and-raised portion for fixing a guide shaft of a pickup is provided, a receiving portion for receiving the guide shaft is formed in the cut-and-raised portion, and a slit for caulking is formed, and the pedestal and the slit are formed. A disk device, wherein the guide shaft is fixed by crimping a portion between the guide shaft and the guide shaft. 4. A disk device in which both sides of a pickup are supported by guides and movable on the guides, wherein one of the guides is a round bar guide shaft and the other is a chassis cut-and-raised. And a resin member having elasticity interposed between the support portion formed on the pickup and the cut and raised portions.