JP2001331992A - Disk clamping mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disk clamping mechanism capable of saving a cost by decreasing the number of parts and the man-hours for assembly. SOLUTION: A disk player P is internally provided with a lift plate 1 turnable in a direction where the plate attaches and detaches to and from a turntable. A clamper 3 is turnably mounted at a spring plate 2 having elasticity. Supporting pieces 2a and 2b and a stay part 3c are formed at the end of the spring plate 2. The spring plate 2 is inserted into a notched part 1a formed at the spring plate 2 in such a manner that the supporting pieces 2a and 2b come above and the stay part 2c below. A retaining part 4 which abuts on end of the clamper 3 in releasing the disk is formed integrally with a disk guide 6 for guiding the disk moved by a loading roller 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk clamp mechanism used when a disk-shaped recording medium conveyed into a disk device is pressed against a turntable and mounted.

[0002]

2. Description of the Related Art Generally, a disk device for recording / reproducing a disk-shaped recording medium (hereinafter, referred to as a disk) such as a CD or a DVD includes a turntable and an optical pickup for recording / reproducing a disk mounted on the turntable. , A disk loading mechanism for loading / unloading the disk into / from the disk device, a disk clamp mechanism for mounting the disk on a turntable, and the like.

[0003] Of these, a normal disk clamp mechanism is provided with a clamper at the other end of a clamper arm having a structure that rotates about one end as an axis. Is mounted on the turntable by pressure bonding. The clamper is made of stainless steel having a smooth surface (various types of stainless steel) so that it can be rotated together with the turntable and the disc while being pressed against the disc.
(U.S.A. material), etc., so that the clamper plate is screwed to the end of the clamper arm so that the clamper arm can move the clamper toward and away from the disc. Have been.

Further, when the clamper is released from the disk, a pressing member may be provided to abut on an end of the clamper in order to prevent generation of noise due to rattling of the clamper.

[0005]

In the above-described disk clamp mechanism, the clamper plate to which the clamper is attached is screwed to the clamper arm, so that the number of parts and the number of assembly steps are large.
It was disadvantageous in terms of cost.

Further, in order to absorb the escape between the clamp member and the clamper for noise prevention, it is necessary to provide the press member with a special structure having a spring property, which also increases the number of parts and the number of assembling steps. Was connected to.

[0007] The present invention has been proposed to solve the above-mentioned problems of the prior art.
An object of the present invention is to provide a disk clamp mechanism capable of saving costs by reducing the number of parts and the number of assembly steps.
Another object of the present invention is to provide a disk clamp mechanism capable of preventing noise from occurring while reducing the number of parts and the number of assembly steps and reducing costs.

[0008]

SUMMARY OF THE INVENTION To achieve the above object, the present invention provides a disk clamp mechanism for pressing a disk onto a turntable by a clamper provided in a disk device. Having.

That is, according to the first aspect of the present invention, there is provided an elevating member which is provided so as to be movable in a direction of contacting and separating from the disk on the turntable, and the clamper is rotatable by a resilient spring plate. The spring plate is attached, and an end of the spring plate is displaceably mounted on the elevating member. According to the first aspect of the present invention, the spring plate is incorporated by simply mounting it on the elevating member without screwing, and the elasticity and the displacement of the spring plate make the pressing force on the disk appropriate. Therefore, the number of parts and the number of assembling steps can be reduced, and cost can be saved.

According to a second aspect of the present invention, in the disk clamp mechanism according to the first aspect, the clamp mechanism has a pressing portion with which a part of the clamper comes into contact when the disk is released. According to the second aspect of the present invention, the spring of the spring plate absorbs the escape between the pressing portion and the clamper, thereby preventing generation of noise. There is no need to use special members.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (1) Configuration of the Embodiment An embodiment of the present invention will be described below with reference to FIGS. That is, in the present embodiment, as shown in FIGS. 1 and 2, a lift plate 1, a spring plate 2,
It is composed of a clamper 3 and a holding section 4.

The lift plate 1 has a rectangular notch 1 at a position corresponding to the turntable as shown in FIGS.
a is the plate formed. As shown in FIG. 2A, on the left and right of the notch 1a in the lift plate 1,
A tapered projection 1b is formed. The lift plate 1 is provided so as to be able to open and close up and down about the shaft portion 1c by an opening and closing mechanism (not shown).

The spring plate 2 is a substantially rectangular plate made of a SUS material or the like having a smooth surface, and elongated support pieces 2a and 2b protruding left and right are integrally formed at four corners thereof. I have. As shown in FIG. 3, between the front and rear support pieces 2a and 2b, a support portion 2c that sandwiches the lift plate 1 between the support pieces 2a and 2b.
Is provided.

A clamper 3 is attached to the lower surface of the center of the spring plate 2. As shown in FIG. 5, the clamper 3 has a small-diameter mooring plate 3b fixed on a large-diameter pressing plate 3a. The clamper 3 is attached to the spring plate 2 by inserting the mooring plate 3b into the holding portion 2d formed on the spring plate 2. The clamper 3 is configured to be rotatable and slightly free to move in the 360 ° direction by a gap (play) between the mooring plate 3b and the grip portion 2d.

As shown in FIG. 4, the spring plate 2 is inserted into the notch 1a so that the support pieces 2a and 2b are above the lift plate 1 and the support 2c is below. Then, the rear support piece 2a is
, The spring plate 2 is prevented from coming off.

Further, in a disk reproducing section provided with an optical pickup, a feed mechanism (not shown), a turntable (7 shown in FIG. 5) and the like, a disk loading mechanism is provided on the disk insertion port side. . As shown in FIG. 1, the disc loading mechanism includes a loading roller 5, a driving mechanism (not shown), and a disc guide 6. The loading roller 5 is provided rotatably by a driving mechanism. The disc guide 6 is a member that sandwiches the disc between the loading roller 5 and guides the movement thereof. And
The disc guide 6 is integrally formed with a pressing portion 4 which comes into contact with the end of the pressing plate 3a of the clamper 3 when the disc is released.

(2) Operation of the Embodiment The operation of the above embodiment will be described below. First, when a disc is not inserted, the lift plate 1 is at a position rotated upward, and as shown in FIG. 5A, the clamper 3 is separated from the turntable 7 and has a disc insertion space. At this time, as shown in FIG. 1, the pressing portion 4 is in contact with the pressing plate 3a of the clamper 3, and the spring properties of the support pieces 2a and 2b of the spring plate 2 work. Is automatically absorbed to prevent noise generation.

When the disc is inserted from the disc insertion slot of the disc player P, the disc is loaded by the disc loading mechanism and positioned on the turntable 7. Next, the lift plate 1 is rotated downward by the opening / closing mechanism, and the clamper 3 presses the disk D on the turntable 7 as shown in FIG. At this time, the spring plate 2 fixedly mounted on the lift plate 1 absorbs an excessive pressing force against the disk D due to the spring property and slight displacement of the support pieces 2a and 2b, and the rigidity of the lift plate 1 is directly increased. Prevent working.

After the disk is mounted on the turntable 7 as described above, the disk rotated by the turntable is reproduced by the optical pickup. Then, when ejecting the disc after playing the disc, the lift plate 1 is rotated upward by the opening / closing mechanism to release the clamper 3 from the disc, and the disc is loaded from the turntable on the disc insertion port side by the disc loading mechanism. Transport to As described above, the holding portion 4 abuts on the clamper 3 from which the disk has been released as described above, thereby preventing generation of noise.

(3) Effects of Embodiment According to the above-described embodiment, the spring plate 2 is not screwed to the lift plate 1,
Since it can be assembled simply by mounting, the number of parts and the number of assembling steps can be reduced, and costs can be saved.

Also, the spring property of the spring plate 2 absorbs the escape of the contact between the holding portion 4 and the clamper 3 and can prevent the generation of noise.
It is not necessary to provide a special structure for imparting spring properties to the disk guide 6. For example, the disk guide 6 can be integrally formed as described above, which leads to a further reduction in the number of parts and the number of assembling steps.

(4) Other Embodiments The present invention is not limited to the above embodiments, and the material, size, shape, quantity, etc. of each member can be changed as appropriate. For example, the material of the spring plate 2 is S
Not limited to US material, elastic and clamper 3
Any material may be used as long as the material can sufficiently obtain the above-mentioned smoothness.

The shapes and materials of the lift plate 1, the spring plate 2, the clamper 3, the disk guide 6, and the projections 1b, the support pieces 2a and 2b, and the holding portions 4 which are part of the lift plate 1, the spring plate 2, the clamps 3, and the like are also the same as those in the above embodiment. It is not limited. For example, the protrusion 1b may be a simple protrusion such as a boss instead of the tapered shape. Further, the holding portion 4 may be provided on a member other than the disk guide 6. In addition, the lift plate 1 may have a structure in which the lift plate 1 is moved up and down in a vertical direction instead of being moved up and down by rotation.

Further, the disk device to which the present invention is applied may be a device for recording / reproducing or a device only for reproducing. If the device is for a disk-shaped recording medium,
The device may be any type and size of recording medium.

[0025]

As described above, according to the present invention, it is possible to provide a disk clamp mechanism capable of saving costs by reducing the number of parts and the number of assembly steps.
Further, according to the present invention, it is possible to provide a disk clamp mechanism capable of preventing the generation of noise while reducing the number of parts and the number of assembling steps and reducing costs.

[Brief description of the drawings]

FIG. 1 is a plan view showing a disc player including one embodiment of a disc clamp mechanism according to the present invention.

FIG. 2 is a left side view (A) and a plan view (B) showing the embodiment of FIG. 1;

FIG. 3 is an exploded plan view of the embodiment of FIG.

FIG. 4 is a plan view showing the embodiment of FIG. 1 in the process of being assembled;

FIGS. 5A and 5B are front views showing a spring plate and a clamper in the embodiment of FIG. 1, wherein FIG. 5A shows a state when the disk is released, and FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Lift plate 1a ... Notch 1b ... Projection part 1c ... Shaft part 2 ... Spring plate 2a, 2b ... Support piece 2c ... Support part 2d ... Grip part 3 ... Clamper 3a ... Pressing plate 3b ... Mooring plate 4 ... Holding part 5 … Loading roller 6… Disc guide 7… Turntable

Claims (2)

[Claims] 1. A disk clamp mechanism for pressing a disk onto a turntable by a clamper provided in a disk device, comprising an elevating member movably provided in a direction of coming into contact with and separating from the disk on the turntable. The disk clamp mechanism, wherein the clamper is rotatably attached to a spring plate having elasticity, and an end of the spring plate is displaceably mounted on the lifting member. 2. The disk clamp mechanism according to claim 1, further comprising a pressing portion with which a part of said clamper comes into contact when said disk is released.