Disk reproducing apparatus

Abstract

A disk reproducing apparatus with improved quality is provided which has a clamper and a clamper plate. By providing the clamp plate with connection portions radially extending from a radially inner peripheral portion toward radially outer peripheral portion of the clamp plate, the axial displacement relative to a clamp holder can be increased as compared to that in the existing structure. Moreover, by disposing the clamper on the radially inner peripheral portion of the clamp plate so as to be elastically deformable, the spacing in clamping can be increased to a drive part.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

Other and further objects, features, and advantages of the invention will be more explicit from the following detailed description taken with reference to the drawings wherein:

FIG. 1 is a perspective view of an electronic apparatus according to an embodiment of the invention;

FIG. 2 is a front view of a chassis cover;

FIGS. 3A, 3B, 3C and 3D are perspective views showing a comparison between chassis structures, wherein FIG. 3A is a perspective view showing an engagement relationship of between a reinforcing rib of the chassis cover according to the embodiment and a chassis body, FIG. 3B is a perspective view showing an essential part of a chassis structure in the existing structure, FIG. 3C is a perspective view on an enlarged scale of a portion shown in FIG. 3A, and FIG. 3D is a perspective view on an enlarged scale of a portion shown in FIG. 3B;

FIG. 4 is a plan view showing a clamp structure of the electronic apparatus;

FIG. 5 is a sectional view showing a relationship between a clamp holder, clamp plate and clamper and a drive part of a spindle motor;

FIGS. 6A and 6B are perspective views showing a comparison between clamp structures, wherein FIG. 6A is a perspective view showing the clamp plate, etc. according to the present embodiment while FIG. 6B is a perspective view showing a clamp plate, etc. according to the existing structure;

FIGS. 7A and 7B are perspective views showing a comparison between the clamp structures, wherein FIG. 7A is a perspective view showing a relationship between the clamper according to the present embodiment and the drive part for the spindle motor while FIG. 7B is a perspective view showing a relationship between a clamper, etc. according to the existing structure and a drive part for a spindle motor;

FIGS. 8A and 8B are views showing a comparison between insertion/ejection mechanism, wherein FIG. 8A is a view showing a loading motor, motor holder and gear arrangement according to the present embodiment while FIG. 8B is a view showing a loading motor, motor holder and gear arrangement according to the existing structure;

FIGS. 9A, 9B, 9C and 9D are views showing a comparison between the feed mechanisms and skew adjustment mechanisms for the optical pickups, wherein FIGS. 9A and 9C are views showing a feed mechanism and skew adjustment mechanism according to the present embodiment while FIGS. 9B and 9D are views showing a feed mechanism and skew adjustment mechanism according to the existing structure;

FIG. 10 is a view showing an arrangement position, etc. of a flexible cover in the electronic apparatus;

FIG. 11 is a perspective view of the flexible cover;

FIG. 12 is a front view of the flexible cover;

FIG. 13 is a side view of the flexible cover;

FIG. 14 shows an essential part where the flexible cover is to be removably attached, which is a sectional view taken along line E-E in FIG. 12;

FIG. 15 shows an essential part where the flexible cover is to be removably attached, which is a sectional view taken along line D-D in FIG. 12;

FIG. 16 shows an essential part where the flexible cover is to be removably attached, which is a sectional view taken along line F-F in FIG. 12;

FIG. 17 is a plan view of the clamp holder, etc;

FIG. 18 is a front view of the clamp holder, etc;

FIG. 19 is an essential-part sectional view of one detaching means for removing a recording disk from the drive part;

FIG. 20 is an essential-part sectional view of the other detaching means for removing a recording disk from the drive part;

FIG. 21 is a view showing a relationship between detecting levers, the clamp holder and a guide holder;

FIG. 22 is a perspective view of the guide holder;

FIG. 23 is a view showing a relationship between the recording disk and the guide holder, etc;

FIG. 24 is a perspective view of a spacer as viewed from one side;

FIG. 25 is a perspective view of the spacer as viewed from the other side;

FIGS. 26A and 26B show an anti-vibration structure in the electronic apparatus, wherein FIG. 26A shows an anti-vibration structure according to the present embodiment having four oil dampers on the chassis body while FIG. 26B shows an anti-vibration structure according to the existing structure having three oil dampers on the chassis body; and

FIGS. 27A, 27B and 27C are views showing a state having floating springs at four points, wherein FIGS. 27B and 27C are enlarged views respectively of a portion shown in FIG. 27A.

Claims

1. A disk reproducing apparatus comprising: a clamper which is elastically deformable and presses a disk against a turntable; anda clamp plate composed of a fixed portion fixed to a clamp holder, a contact portion in contact with the clamper, and a connection portion which is elastically deformable and connects the fixed portion and the contact portion.

2. The disk reproducing apparatus of claim 1, wherein the connection portion radially extends from the contact portion to the fixed portion.

3. The disk reproducing apparatus of claim 1wherein the clamper is formed of a flexible material so as to have a circular shape, and is provided with an annular slant wall portion formed so as to be closer to the turntable from inside to outside in a radial direction of the clamper, and a deflection amount of the clamper relative to the clamp holder is determined depending upon a thickness of the slant wall portion.

4. The disk reproducing apparatus of claim 1, wherein the clamp holder is provided with a pair of detaching means which detaches a recording disk from the turntable and which are arranged in positions symmetric or nearly symmetric about an axis of the turntable.

5. The disk reproducing apparatus of claim 1, further comprising: a chassis body which houses electronic components; anda chassis cover for covering the chassis body,wherein the chassis cover has a reinforcing rib which is disposed on the chassis cover at a lengthwise intermediate portion of its outer peripheral edge and can be engaged with the chassis body.

6. The disk reproducing apparatus of claim 5, further comprising a drive mechanism for driving an optical pickup apparatus, wherein the driving mechanism has:a feed screw which is structured with a feed-screw pitch capable of reducing a rotational rate of a rotational drive source; anda feed female screw which is in mesh with the feed screw and formed of resin.

7. The disk reproducing apparatus of claim 6, wherein a cover member is removably disposed in a vicinity of the feed screw in at least one of the chassis body and the electronic component.

8. The disk reproducing apparatus of claim 6wherein the rotational drive source and the driving mechanism are structured so that their inclination angles relative to a recording disk can be adjusted, respectively.

9. The disk reproducing apparatus of claim 7, further comprising: a guide holder for inserting and ejecting the recording disk; anda spacer formed of resin, which is removably disposed on the guide holder.

10. The disk reproducing apparatus of claim 9, wherein the spacer is made in a snap-fit structure allowing a deformation due to a difference in thermal expansion coefficient from the guide holder.

11. The disk reproducing apparatus of claim 2, wherein the clamper is formed of a flexible material so as to have a circular shape, and is provided with an annular slant wall portion formed so as to be closer to the turntable from inside to outside in a radial direction of the clamper, and a deflection amount of the clamper relative to the clamp holder is determined depending upon a thickness of the slant wall portion.

12. The disk reproducing apparatus of claim 7, wherein the rotational drive source and the driving mechanism are structured so that their inclination angles relative to a recording disk can be adjusted, respectively.