JP2981452B2 - Disc insertion / ejection mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk device such as a disk recording / reproducing device, and more particularly to a disk insertion / ejection mechanism.

[0002]

2. Description of the Related Art FIG. 3 shows an example of a disk insertion / ejection mechanism of a conventional disk recording / reproducing apparatus. The disk recording / reproducing unit is supported by a floating chassis supported by a main body chassis via a vibration damping mechanism (not shown). A floating disk guide 4 for guiding the disk 1 is fixed to the floating chassis.

A fixed disk guide 3 extending from a disk insertion slot 2a is fixed to the housing 2. The disc 1 inserted into the disc insertion slot 2a is sent to a recording / reproducing position by a feed roller (not shown), and sent from the recording / reproduction position to a position protruding from the disc insertion port 2a by the feed roller.

A disk used in the disk recording / reproducing apparatus is housed in a cartridge, and a shutter 8 is slidably mounted on the cartridge as shown in FIG. 4, and the shutter 8 is provided on the cartridge. Open and close windows. The shutter 8 has an open end, is separated from the surface of the cartridge by the dimension of C in the drawing, and the shutter 8 may protrude from the surface of the cartridge. Accordingly, as shown in FIG. 3, the fixed disk guide 3 and the floating disk guide 4 have the inclined guide portion 3 for guiding the disk 1.
a and 5 are provided respectively.

[0005]

In the above-described conventional disk insertion / ejection mechanism, since the inclined guides 3a and 5 are disposed so as to face each other, the tips of the inclined guides 3a and 5 are vibrated by the floating chassis. It is necessary to arrange them at a distance of B shown in the drawing to allow a damping stroke. As a result, the distance over which the disk 1 is sent is increased, and the length of the apparatus is increased.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and has as its object to provide a disk insertion / ejection mechanism capable of shortening the distance for sending a disk and shortening the length of the apparatus. Is to provide.

[0007]

A disk insertion / ejection mechanism according to the present invention is a disk insertion / ejection mechanism for guiding a disk by a fixed disk guide fixed to a housing and a floating disk guide fixed to a floating chassis. The inclined guide portions of the fixed disk guide and the floating disk guide are provided at alternate positions in the direction perpendicular to the disk traveling direction and at positions overlapping in the disk traveling direction, and these inclined guide portions allow the vibration damping stroke of the floating chassis. Are arranged at a distance apart from each other.

In the above-mentioned disk insertion / ejection mechanism, in addition to the inclined guide portions arranged alternately in the direction perpendicular to the direction of travel of the disk, the inclination angle is made larger or longer than those inclined guide portions. A shortened inclined guide portion is provided, and is arranged at a distance from an opposed inclined guide portion to allow a vibration damping stroke of the floating chassis.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A disk insertion / ejection mechanism of a disk recording / reproducing apparatus according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a plan view showing a main part of a disk insertion / ejection mechanism according to an embodiment of the present invention, and FIG. 2 is an enlarged sectional view showing a main part of the disk insertion / ejection mechanism. The disc 1 shown in FIG. 4 described in the conventional example is inserted and ejected by this disc insertion and ejection mechanism.

The disk recording / reproducing unit is supported by a floating chassis supported by a main body chassis via a vibration damping mechanism (not shown). A floating disk guide 4 for guiding the disk 1 is fixed to the floating chassis.

A fixed disk guide 3 extending from the disk insertion slot 2a is fixed to the housing 2. The disc 1 inserted into the disc insertion slot 2a is sent to a recording / reproducing position by a feed roller (not shown), and sent from the recording / reproduction position to a position protruding from the disc insertion port 2a by the feed roller.

The fixed disk guide 3 is provided with an inclined guide portion 3a for guiding the disk 1. Both ends of the floating disk guide 4 are provided with inclined guide portions 5a and 5c, and a central portion is provided with inclined guide portions 5b. The angle of the inclined guides 5a and 5c with respect to the horizontal is small, and extends to a position overlapping the inclined guide 3a in the traveling direction of the disk 1. The angle of the inclined guide portion 5b with respect to the horizontal is large, and the distal end thereof is separated from the distal end of the inclined guide portion 3a by a distance A shown in the drawing to allow a vibration damping stroke of the floating chassis. The side surfaces of the inclined guide portion 3a and the inclined guide portions 5a and 5c are also separated by a distance that allows a vibration damping stroke of the distance floating chassis.

As described above, since the inclined guide portion 3a and the inclined guide portions 5a and 5c are arranged at positions overlapping with each other in the disc traveling direction, the distance for feeding the disc 1 can be shortened and the apparatus can be downsized. Further, since the inclined guide portion 3a and the inclined guide portions 5a and 5c are arranged at alternate positions in the direction perpendicular to the disk traveling direction, they can be separated by a distance that allows the vibration damping stroke of the floating chassis.

Although the embodiment is constructed as described above, the invention is not limited to this. For example, inclined guide portions are provided at both ends of the fixed disc guide at alternate positions in the direction perpendicular to the disc traveling direction. For example, the combination of the positions in the width direction can be arbitrary. Further, instead of increasing the inclination angle of the inclination guide portion 5b, the length may be shortened.

[0015]

According to the disk insertion / ejection mechanism of the present invention, the respective inclined guide portions of the fixed disk guide fixed to the housing and the floating disk guide fixed to the floating chassis are arranged at positions overlapping each other in the disk advancing direction. The apparatus can be downsized by shortening the distance for sending the disk.

[Brief description of the drawings]

FIG. 1 is a plan view showing a main part of a disk insertion / ejection mechanism according to an embodiment of the present invention.

FIG. 2 is an enlarged sectional view showing a main part of the disc insertion / ejection mechanism.

FIG. 3 is a sectional view showing an example of a conventional disk insertion / ejection mechanism.

FIG. 4 is a side view showing a disc inserted and ejected by the disc insertion and ejection mechanism.

[Explanation of symbols]

 Reference Signs List 1 disc, 1a shutter 2 housing, 2a disc insertion slot 3 fixed disc guide, 3a inclined guide section 4 floating disc guide 5, 5a, 5b, 5c inclined guide section

Claims (2)

(57) [Claims] 1. A disk insertion and ejection mechanism for guiding a disk by a fixed disk guide fixed to a housing and a floating disk guide fixed to a floating chassis, wherein the fixed disk guide and the floating disk guide have respective inclined guide portions. Are provided at alternate positions in the direction perpendicular to the direction of travel of the disk and at positions overlapping in the direction of travel of the disk, and these inclined guide portions are arranged apart from each other by a distance allowing a vibration damping stroke of the floating chassis. Insertion and ejection mechanism. 2. In addition to the inclined guides arranged at alternate positions in a direction perpendicular to the direction of travel of the disk, an inclined guide having a greater inclination angle or a shorter length than these inclined guides is provided. 2. The disk insertion / ejection mechanism according to claim 1, wherein the disk insertion / ejection mechanism is arranged at a distance from the opposing inclined guide portion to allow a vibration damping stroke of the floating chassis.