JPH07122970B2 - Cartridge for information storage medium - Google Patents

Description

Description: TECHNICAL FIELD OF THE INVENTION The present invention relates to an information storage medium cartridge for storing an information storage medium such as an optical disk.

[Technical background of the invention and problems thereof] In recent years, for example, information is stored by irradiating the surface of an information storage medium such as an optical disk with light that is narrowed down, or detecting reflected light from the surface of the optical disk. An information storage medium for reproducing information has been put into practical use. Such an information storage medium is characterized in that it can store and reproduce information at high density, for example.

The above-mentioned information storage medium is obstructed on the optical path of light such as a laser beam irradiated on its surface due to adhesion of dust, scratches, dust, etc. There was a problem of not having. However, a cartridge for an information storage medium that has been conventionally used (hereinafter, also simply referred to as a cartridge) is a notch in which a storage / reproduction head for storing / reproducing information on / from an optical disc housed inside is provided in the cartridge body. It is necessary to store and reproduce information on the optical disc housed from this portion via the unit. A shutter, which is a shielding member, is normally attached to the notch so as to be openable and closable, and is shielded by the shutter to prevent dust and the like from entering when not in use. However, as described above, when recording / reproducing information on / from the contained optical disc, the notch must be opened / closed.

By the way, since the guide portion for supporting the shutter is conventionally provided in the same plane as the surface on which the cutout portion is provided, the guide portion is provided in close proximity to the guide portion. There is a problem that abrasion powder generated from a portion that is in sliding contact easily enters the inside of the cartridge main body from the cutout portion.

Therefore, it has been expected to develop a cartridge for an information storage medium that does not have a risk of the abrasion powder generated every time the shutter is slid into the inside of the cartridge body.

[Object of the Invention] The present invention has been made in view of the above circumstances, and there is no risk that abrasion powder resulting from sliding of a shutter attached to a cartridge body for an information storage medium will enter the inside of the cartridge body. A storage medium cartridge is provided.

[Outline of the Invention] A cartridge for an information storage medium of the present invention is provided with two main body members, each of which has a notch in a part thereof and which can be divided into upper and lower parts, and upright from edges of inner wall surfaces of these main body members. And a protrusion that abuts each other, and a space for accommodating an information storage medium is formed between the inner wall surfaces of the two body members in which the cutouts are formed and the protrusion that abuts each other. A space separated from the medium storage space is formed by the inner wall surfaces of the two main body members on the edge side and the protrusions that are in contact with each other, and is stored in the medium storage space through the cutout portion. The cartridge body in which information is reproduced from the stored information storage medium and the U-shaped cross section, and the outer wall surface of the cartridge body is sandwiched between the opposing wall surfaces of the U-shape and the U-shape. The bottom of the shape is front The shutter that moves between the position where the cutout portion is in the closed state and the position where the cutout portion is in the open state in a state of facing the isolated space, and the U-shape of the shutter that faces the isolated space. A bent portion formed of a pair of spring members having a concave portion in the center, and a convex portion fitted in the concave portion, the bent portion being provided so as to project from the bottom portion in the direction of the protruding portions in contact with each other in the isolated space. A sliding member inserted between the pair of bent portions against the spring force of the bent portions and attached to the pair of bent portions; and the sliding member 2 on the edge side forming the isolated space.
And a groove portion provided on the inner wall surface of the sheet body member for guiding the sliding of the sliding member along with the movement of the shutter in the isolated space.

[Embodiment of the Invention] An embodiment of the present invention will be described below with reference to the drawings.

1 and 2 are perspective views showing the appearance of an example of the information storage medium cartridge of the present invention. FIG. 1 shows the closed state of the shutter, and FIG. 2 shows the opened state of the shutter.

First, in FIG. 1, what is indicated by a dotted line is an information storage medium housed inside, for example, optical discs 1 and 2 are cartridge main bodies (hereinafter,
It is also called the main body). The cartridge main body 2 is provided with a step at a portion to which a shutter described later is attached, and the shutter can slide at this portion. Further, the cartridge body 2 can be divided into upper and lower parts in the drawing, which are shown by 2a and 2b, respectively. Further, a U-shaped shutter shown by 4 in the drawing is attached to the cartridge body 2 via a sliding member 5 so as to be slidable in the direction of arrow C. The shutter 4 is configured to be stationary in a closed state 6a on a cutout portion 2A provided on the rotation center 1a of the optical disc 1 housed inside the cartridge body 2. Further, FIG. 2 shows an open state 6a in which the shutter described in FIG. 1 is slid in the direction of arrow C. The notch 2A is normally housed inside, for example, so that an optical disk holding member 21 provided on an arm 17 described later can be fitted to the rotation center 1a of the optical disk 1, and information is recorded and reproduced by a recording and reproducing head 18. It is provided to do so.

FIG. 3 is a perspective view of the storage / reproduction device 16 into which the information storage medium cartridge 20 is inserted.

In the storage / reproduction device 16 shown in the same figure, the information storage medium cartridge 20 is inserted from the direction of arrow A shown in FIG. 1 or 2, and the operation shown in FIG. The optical disc holding members 21 and 22 each having a fulcrum in the recording / reproducing device 16 as shown in FIG. 2 are drive-controlled in the vertical direction, and the optical disc 1 is provided with the disc holding members 21 and 22 in the rotation hole 1a provided at the rotation center thereof. The optical disk 1 is rotated by being inserted and being rotatably held. At this time, the storage / playback head 18, whose movement is controlled by a controller (not shown), is controlled to be moved by a linear motor 24, for example, to a predetermined position where a minute gap is maintained between the recording / reproducing head 18 and the optical disc 1 via a notch. In this way, the rotation of the optical disc 1 housed in the cartridge body 2 is controlled, and the information stored in the recording / reproducing head 18 is reproduced, or the information is stored in the optical disc 1. ing. When the cartridge body is moved into the storage / reproduction device 16, the shutter 4 is opened / closed in the direction of arrow C by a shutter opening / closing tool (not shown) provided inside the device.

The shutter 4 provided in the information storage medium cartridge 20 described above will be described in detail below.

FIG. 5 is a sectional view of the information storage medium cartridge 20 taken along the line EE shown in FIG.

Two body members 2a, 2b that are partially formed with a notch 2A and can be divided into upper and lower parts, and a protrusion 10 that is provided upright from the edge of the inner wall surface 11 of these body members 2a, 2b and abuts each other. And between the inner wall surfaces 11 of the two body members 2a, 2b in which the cutouts 2A are formed and the protrusions 10 that abut each other,
A medium accommodating space 9 for accommodating the information storage medium 1 is formed, and inner wall surfaces 1 of the two body members 2a, 2b on the edge side are formed.
The space 10 separated from the medium storage space 9 is formed by the protrusions 10 that are in contact with each other and between the cutouts 2A.
A cartridge main body 2 through which information is reproduced from the information storage medium 1 stored in the medium storage space 9,
It has a U-shaped cross section, and the outer wall surface of the cartridge body 2 is sandwiched between the U-shaped opposed wall surfaces, and the U-shaped bottom portion is opposed to the isolated space 3. The shutter 4 that moves between the position where the notch 2A is in the closed state and the position where the notch 2A is in the open position, and the U-shaped bottom portion of the shutter 4 that faces the isolated space 3 are separated from each other. The protrusions that abut each other in the open space 3
It has a bent portion 4a which is provided so as to project in 10 directions and which is composed of a pair of spring members having a recessed portion 14 in the center, and a protruding portion which fits into the recessed portion 14, and resists the spring force of the bent portion 4a. On the inner wall surface 11 of the two main body members 2a, 2b on the edge side that form the isolated space 3 and the sliding member 5 that is inserted and mounted between the pair of bent portions 4a. The groove portion 7 is provided to guide the sliding of the sliding member 5 with the movement of the shutter 4 in the isolated space 3.

Thus, the sliding member 5 can be held by the spring force of the bent portions 4a, 4a formed of the spring member provided on the shutter 4, which is preferable.

The shapes of the concave portions 14 and 14 and the convex portions 15 and 15 provided on the shutter 4 and the sliding member 5 are not limited to the substantially semicircular shape shown in the drawing, and may be, for example, triangular or quadrangular. .

By fixing in this way, the shutter 4 and the sliding member 5 can be easily attached and detached with one touch.

In this way, unlike the conventional case, the sliding member 5 is provided on the space 3 side other than the surface on which the notch 2A is provided and different from the optical disk storage space 9, so that the sliding member 5 is provided. 5 can be treated in the space 3 with abrasion powder generated by sliding between the groove 5 provided in the cartridge body 2 and the groove 7.
It can be prevented from falling on the surface of the optical disc. Further, since the sliding member 5 is sandwiched by the spring members, there is an advantage that the fixing is reliable and the both can be easily attached and detached.

The present invention is not limited to the above-mentioned embodiments, and various modifications can be made within the scope of the gist of the present invention. For example, although one shutter has been described in the above embodiment, it goes without saying that the same can be applied to a cartridge provided with two or more shutters.

[Advantages of the Invention] With the above-described configuration, the sliding portion of the shutter is provided in a space different from the disc storage space, and the shutter has the cartridge body formed by the U-shaped opposite wall surfaces. The sliding member is sandwiched by the guide member provided on the wall surface of the cartridge body in a state where the spring member provided at the bottom thereof is fitted into the convex portion of the sliding member inserted against the spring force. Cartridge for information storage medium, which can surely prevent abrasion powder from entering the cartridge body due to sliding of the shielding member by sliding the guide member and sliding it between the closed position and the open position. Can be provided.

[Brief description of drawings]

1 and 2 are external perspective views of a cartridge for an information storage medium of the present invention, FIG. 3 is a perspective view showing a state in which the cartridge for an information storage medium is inserted into a storage / reproducing apparatus, and FIG. 4 is an information storage medium. And FIG. 5 is a sectional view showing an embodiment of the present invention. 1 ... Information storage medium, 2 ... Cartridge body, 4 ... Shielding member, 5 ... Sliding member, 15 ... Notch.

Claims (1)

[Claims] 1. A main body member having two notch portions, which are partially cut out, and which can be divided into upper and lower portions, and protrusions which are provided upright from the edges of the inner wall surfaces of the main body members and abut against each other. A medium storage space for storing an information storage medium is formed by the inner wall surfaces of the two body members in which the cutout portions are formed and the protrusions that abut each other, and A space separated from the medium storage space is formed by the inner wall surfaces of the main body member and the protrusions that are in contact with each other, and information is reproduced from the information storage medium stored in the medium storage space through the cutout portion. The cartridge main body has a U-shaped cross section, and the outer wall surface of the cartridge main body is sandwiched between the U-shaped opposed wall surfaces, and the U-shaped bottom is in the isolated space. In the opposite state, A shutter that moves between a position in which the cutout portion is in a closed state and a position in which the cutout portion is in an open state, and the shutter in the space isolated from the U-shaped bottom of the shutter that faces the space. A bent portion formed by a pair of spring members having a concave portion at the center, and a convex portion fitted in the concave portion, which is provided so as to project in the direction of the contacting protrusion portion, and has a convex portion that resists the spring force of the bent portion. A sliding member that is inserted between a pair of bent portions and is attached to the sliding member, and an inner wall surface of the two body members on the edge side that forms the isolated space, and the sliding member is attached to the inner wall surface of the shutter member when the shutter moves. An information storage medium cartridge, comprising: a groove for guiding the sliding of the sliding member in the isolated space.