JPH01285083A - Disk cartridge - Google Patents

Abstract

PURPOSE:To prevent a shutter from damaging a cartridge main body by setting ribs on the sliding contact face of the external surface of the cartridge main body with the shutter. CONSTITUTION:A slider 3 linked with a shutter 2 is slidably fitted between cases 1a and 1b, linear ribs 5 and circular arc ribs 6 are formed in the sliding direction of the shutter 2 on the surfaces of the cases 1a and 1b. Consequently, when the shutter 2 slides on a cartridge main body 1, it is guided by the linear ribs 5 and the circular arc ribs 6, therefore, the shutter 2 can be opened and closed without the shutter coming into sliding contact with the cartridge main body 1 except the ribs 5 and 6. For example, when a central circular part to store a disk D is made transparent and the disk stored inside is made visible, there is no fear that the shutter 2 comes into sliding contact with the circular part 7 by the existence of the ribs 5 and 6. Thus, its transparentness is not lost by flaws.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a disc cartridge that is made into a cassette so as to be installed in a drive device with a disc-shaped recording medium stored therein.

[Prior Art] In recent years, optical discs have been used as information recording media in the field of information Φ data management. However, since an optical signal such as a laser beam is used to read the recorded information, reading becomes impossible if scratches, dust, dirt, etc. adhere to the disc. In order to prevent this, a disc cartridge with a shutter mechanism is used which allows the disc to be loaded into a drive device while the disc is still stored therein. Then, as this shutter mechanism, a shutter that closes the opening provided for reading the record is used.
A cartridge is used that opens and closes by sliding along the outer surface of the cartridge.

[Problems to be Solved by the Invention] However, in the conventional example described above, the shutter is attached so as to slide directly on the outer surface of the cartridge. It may damage the outer surface. These scratches cause functional problems such as deterioration of sliding properties of the shutter and generation of shavings, and problems such as deterioration of appearance and quality.

[Object of the invention] The object of the invention is to provide a rib on the outer surface of the cartridge,
It is an object of the present invention to provide a disk cartridge that can protect the outer surface of the cartridge from being scratched by guiding a shutter using the ribs.

[Summary of the invention] The gist of the present invention is to achieve the above objects.

In a disk cartridge for storing a disk-shaped recording medium, a shutter is attached to be openable and closable in an opening provided for recording and reproducing the recording medium, and a rib is provided on the outer surface for guiding when the shutter is opened and closed. This is a disc cartridge featuring:

[Embodiments of the invention] The present invention will be explained in detail based on illustrated embodiments.

FIG. 1 is a plan view of the disk cartridge, and FIG. 2 is a sectional view. A rectangular cartridge body 1 consisting of two substantially identical cases 1a and 1b is sandwiched between them.
A shutter 2 having a U-shaped cross section is slidably fitted along a plate 4 attached to a main body l. Case 1
A slider 3 is connected to the shutter 2 and slidably attached between a and lb, and the surfaces of the cases 1a and lb are provided with a linear rib 5 along the sliding direction of the shutter 2 and an arcuate rib. 6 is formed.

When the shutter 2 slides on the cartridge body 1,
In order to be guided by the linear rib 5 and the arcuate rib 6,
The shutter 2 can be opened and closed without slidingly contacting the cartridge body 1 except for the ribs 5.6.

For example, if the central circular part 7 that houses the disc D is made transparent so that the disc stored inside can be seen, there is a risk that the shutter 2 will come into sliding contact with the circular part 7 due to the presence of the rib 5.6. There is no loss of transparency due to scratches.

Further, by disposing the aforementioned linear rib 5 at the end of the cartridge body 1 and the two-arc shaped rib 6 around the disk storage portion, design loss can be kept to a minimum.

In this embodiment, the ribs 5.6 are made of the same material as the cartridge body 1, but by molding the ribs 5.6 in two layers from different materials or forming inserts from metal,
It is possible to improve the slidability of the shutter 2.

[Effects of the Invention] As explained above, the disk cartridge according to the present invention prevents the shutter from damaging the cartridge body and improves its functionality by installing ribs on the sliding contact surface with the shutter on the outer surface of the cartridge body. Above all, it has the effect of improving performance in terms of appearance.

[Brief explanation of the drawing]

The drawings show an embodiment of a disk cartridge according to the present invention, with FIG. 1 being a plan view and FIG. 2 being a sectional view. Reference numeral 1 is a cartridge body, 2 is a shutter, 3 is a slider, 4 is a plate, 5.6 is a rib, and 7 is a circular portion. Patent applicant Canon Co., Ltd.

Claims (1)

[Claims] 1. In a disk cartridge for storing a disk-shaped recording medium, a shutter is attached to an opening provided for recording and reproduction of the recording medium so as to be openable and closable, and a rib is provided on the outer surface for guiding when the shutter is opened and closed. A disc cartridge characterized by: