JPH09102177A - Disk cartridge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely house a write protector in a write protector guide part during assembling of a disk cartridge and to smoothly move the write protector. SOLUTION: The side wall 2d of a guide part 2b is set so as to be in parallel with upper and lower surfaces in the figure. A chamfered part 2e is formed in the end part of this side wall 2d. The side face 6d of a write protector 6 is also set so as to be in parallel with the upper and lower surfaces in the figure. This side face 6d and the side wall 2d are in contact with each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk cartridge, and more particularly to a structure of a write protector.

[0002]

2. Description of the Related Art Generally, a disc cartridge for accommodating a disc is widely known. Such a disk cartridge is usually provided with a write protector for preventing writing, and is configured so that the write protector is appropriately positioned at a writable position and a write protection position and selected. ing.

FIG. 6 is a sectional view of a conventional light protector. Reference numeral 101 in the drawing denotes an upper shell, and the light protector guide portion 10 is provided in the upper shell 101.
1a is formed. The light protector guide portion 101a guides the movement of the light protector 102 and houses the light protector 102. The side surface of the light protector 102 is formed to be inclined with respect to the vertical line 1 in the figure by an angle θ ₁ (about 1 to 2 °). Further, the side wall 101b of the light protector guide portion 101a has an angle θ _{2 with} respect to the vertical line l.
It is formed so as to be inclined in the direction opposite to the angle θ _{1 by} (about 1 to 2 °).

[0004]

However, in the above-described structure, since the side surface and the side wall of the light protector have an inclination of an angle (θ ₁ + θ ₂ ), the installed state of the light protector is not stable. There is a problem that the protector is unstable when it is moved or stored.

The present invention has been made in view of the above-mentioned problems, and the light protector can be surely housed in the light protector guide portion when the disk cartridge is assembled, and the light protector can be moved smoothly. An object is to provide a disc cartridge that can be used.

[0006]

The present invention comprises an upper shell, a lower shell attached to the upper shell, and a light protector movably provided between the lower shell and the upper shell. In the disc cartridge, the upper shell has a guide portion for guiding the movement of the light protector,
The side wall of the guide portion and the side surface of the light protector are in contact with each other, and a chamfered portion is formed on the side wall of the guide portion; the side wall of the guide portion and the side surface of the light protector are tapered at substantially the same angle. Is formed.

[0007]

An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a perspective view of a disk cartridge according to the present invention. Reference numeral 1 in the drawing is a lower shell, and an upper shell 2 is attached to the lower shell 1. A disk 11 is provided in the hollow portion formed by the lower shell 1 and the upper shell 2.
Is rotatably housed. Further, an opening 2a (the lower shell 1 side is not shown) is formed in each of the lower shell 1 and the upper shell 2.
A shutter 3 is provided so as to cover a, so that it can reciprocate in the direction of the arrow in the figure. Further, a slider 4 is provided in the hollow portion formed by the lower shell 1 and the upper shell 2.
Is provided so as to be movable in the direction of the arrow in the figure, and the shutter 3 is fixed to this slider 4 by screws (not shown). A coil spring 5 is interposed between the slider 4 and the cartridge body, and the shutter 3 is configured to constantly cover the opening 2a.

FIG. 2 is an inner plan view of the upper shell 2 used in the disc cartridge of the present invention.
A light protector 6 is housed in the upper shell 2 and a guide portion 2b for guiding the movement of the light protector 6 is formed.

FIG. 3 is a partially enlarged view of portion A in FIG. The light protector 6 includes a main body 6a and the main body 6a.
It is composed of two legs 6b, 6b protruding from. Further, the leg portion 6b is formed with a protruding portion 6c that projects outward, and by writing into the locking portion 2c formed in the guide portion 2b of the upper shell 2, the write protector 6 can be written. The position and the write-protection position are respectively positioned and held.

FIG. 4 is a view on arrow IV-IV in FIG. Here, the side wall 2d of the guide portion 2b is a vertical plane (upper and lower surfaces in the figure).
It is set to be parallel to. A chamfer 2e is formed at the end of the side wall 2d. Further, the side surface 6d of the light protector 6 is also set to be parallel to the vertical plane in the figure, and the side surface 6d and the side wall 2d are in contact with each other. The chamfered portion 2e is formed so that the light protector 6 can be smoothly incorporated into the guide portion 2b when the disc cartridge is assembled.

The operation of assembling the disk cartridge thus constructed will be described. When mounting the light protector 6 in the guide portion 2b of the upper shell 2, the light protector 6 is mounted in the guide portion 2b while being guided by the chamfered portion 2e. Then, the disk 11, the slider 4, the coil spring 5, etc. are housed and the lower shell 1 is covered. Then, the shutter 3 is screwed to the slider 4. In this way, the disc cartridge is assembled.

Further, when the write protector 6 capable of writing or preventing writing on the disk 11 is switched, the write protector 6 is slid up and down in FIG. 3 to engage the protrusion 6c with the engaging portion 2c. By changing the combined position, it is possible to switch between the writable position and the write prevention position. At this time, since the side surface 6d of the light protector 6 and the side wall 2d are in contact with each other, the light protector 6 is moved in a surface contact state and can be moved in a stable state without being tilted.

FIG. 5 is a sectional view showing the main part of another embodiment of the disk cartridge according to the present invention. In the present embodiment, while the side surface 6d and the side wall 2d are formed parallel to the upper and lower surfaces in the figure in the above embodiment (see FIG. 4), the side surface 6d and the side wall 2d are formed at an angle θ _{3 with} respect to the upper and lower surfaces in the figure. Inclining (about 2 °) and forming a taper portion that inclines in the same direction so that the side surface 6d and the side wall 2d contact each other. As a result, the light protector 6 can be reliably installed at a fixed position when it is mounted in the guide portion 2b particularly during assembly.

[0014]

As described above, according to the present invention, the light protector can be reliably housed in the light protector guide portion when the disk cartridge is assembled. In addition, it is possible to smoothly move the light protector.

[Brief description of the drawings]

FIG. 1 is a perspective view of a disc cartridge according to the present invention.

FIG. 2 is a plan view of an upper shell used in the disc cartridge according to the present invention.

FIG. 3 is an enlarged view of a portion A in FIG. 2;

FIG. 4 is a view taken in the direction of arrows IV-IV in FIG. 3;

FIG. 5 is an enlarged sectional view of an essential part of another embodiment of the disk cartridge according to the present invention.

FIG. 6 is an enlarged cross-sectional view of a main part of a conventional disc cartridge.

[Explanation of symbols]

 1 ... Lower shell 2 ... Upper shell 2b ... Guide part 2d ... Side wall 2e ... Chamfer part 6 ... Light protector 6d ... Side surface

Claims (2)

[Claims] 1. A disk cartridge comprising an upper shell, a lower shell attached to the upper shell, and a light protector movably provided between the lower shell and the upper shell, wherein the upper shell has The disc is characterized in that a guide portion for guiding the movement of the light protector is formed, a side wall of the guide portion abuts a side surface of the light protector, and a chamfered portion is formed on the side wall of the guide portion. cartridge. 2. The disk cartridge according to claim 1, wherein the side wall of the guide portion and the side surface of the write protector are formed with a taper portion at substantially the same angle.