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US 2002/0172142 A1Published application
Disc cartridge
AssigneeFuji Photo Film Co., Ltd.
InventorKengo Oishi
Life of this patent
Estimating the term…
Abstract
In a disc cartridge, when a shutter fitting portion disposed at the outside of a case is pressed, a shutter drawing portion is drawn to rotate an arcuate guide wall portion together with a shutter main body. The shutter drawing portion is swingable in the width direction of the arcuate guide wall portion, and thus occurrence of component force for inclining the shutter main body due to the pulling of the shutter drawing portion can be suppressed. Therefore, a first shutter member is smoothly rotated, and an aperture for access to a disc medium is opened. According to the present invention, there is provided a disc cartridge in which a shutter member for opening/closing an aperture for access to a disc medium housed therein can operate smoothly.
Claims20
A disc cartridge, characterized by including:
- an aperture to access a disc-shaped medium, the aperture being formed in a case in which a disc-shaped disc medium is rotatably housed inside a cylindrical wall having a substantially cylindrical shape;
- a plate-shaped shutter main body which is rotated to open/close at least a part of the aperture;
- a shutter guide portion which is curved along the cylindrical wall and erectly provided to the shutter main body;
- and
- an operating member having one end portion joined to the shutter guide portion and the other end portion located at the outside of the case, the other end of the operating member being drawn from the external to rotate the shutter guide portion along the cylindrical wall when at least a part of the aperture is opened,
- wherein the operating member is joined so as to be slidable in the width direction of the shutter guide portion.
3 more elements
A disc cartridge characterized by including:
- an aperture to access a disc-shaped medium, the aperture being formed in a case in which a disc-shaped disc medium is rotatably housed inside a cylindrical wall having a substantially cylindrical shape;
- a plate-shaped shutter main body which is rotated to open/close at least a part of the aperture;
- a shutter guide portion which is curved along the cylindrical wall and erectly provided to the shutter main body;
- and
- an operating member having one end portion joined to the shutter guide portion and the other end portion located at the outside of the case, the other end of the operating member being drawn from the external to rotate the shutter guide portion along the cylindrical wall when at least a part of the aperture is opened,
- wherein the operating member is joined to a portion located at the outer side than the inner peripheral surface of the shutter guide portion.
3 more elements
A disc cartridge characterized by comprising:
- a case which is formed by joining an upper shell and a lower shell to each other and in which a disc-shaped medium is rotatably housed inside a cylindrical wall formed erectly on the inner surface of the lower shell;
- an aperture to access the disc medium which is formed in the lower shell by cutting out the cylindrical wall from the front portion thereof;
- a shutter member which is provided to the outside of the lower shell and slides along the outer peripheral surface of the cylindrical wall to open/close the aperture;
- and
- a cover member having an aperture which is formed by cutting out the cover member from the front portion thereof so as to be overlapped with the aperture to access the disc medium, the shutter member being movably accommodated between the cover member and the lower shell,
- wherein the inner surface of a site of the shutter member which is designed to have such a width dimension that the aperture of the cylindrical wall can be closed is designed to have a friction reducing shape that reduces the friction between the inner surface of the site of the shutter member and the outer peripheral surface of the cylindrical wall.
3 more elements
A disc cartridge characterized including:
- a case which is formed by joining an upper shell and a lower shell to each other and in which a disc-shaped medium is rotatably housed inside a cylindrical wall formed erectly on the inner surface of the lower shell;
- an aperture to access the disc medium which is formed in the lower shell by cutting out the cylindrical wall from the front portion thereof;
- a shutter member which is provided to the outside of the lower shell and slides along the outer peripheral surface of the cylindrical wall to open/close the aperture;
- and
- a cover member having an aperture which is formed by cutting out the cover member from the front portion thereof so as to be overlapped with the aperture to access the disc medium, the shutter member being movably accommodated between the cover member and the lower shell,
- wherein the outer peripheral surface of the cylindrical wall of the lower shell is designed to have a friction reducing shape that reduces the friction between the inner surface of the site of the shutter member and the outer peripheral surface of the cylindrical wall.
3 more elements
A disc cartridge characterized by including:
- a case which is formed by joining an upper shell and a lower shell to each other and in which a disc-shaped medium is rotatably housed inside a cylindrical wall formed erectly on the inner surface of the lower shell;
- an aperture to access the disc medium which is formed in the lower shell by cutting out the cylindrical wall from the front portion thereof;
- a shutter member which is provided to the outside of the lower shell and slides along the outer peripheral surface of the cylindrical wall to open/close the aperture;
- and
- a cover member having an aperture which is formed by cutting out the cover member from the front portion thereof so as to be overlapped with said aperture to access the disc medium, the shutter member being movably accommodated between the cover member and the lower shell,
- wherein a site of the shutter member whose width dimension is set so that the aperture of the cylindrical wall can be closed, the site at least including the upper end portion and/or the lower end portion of the shutter member, is designed to have a friction reducing shape which reduces the friction between the upper end portion and/or the lower end portion of the site of the shutter member and the upper shell and/or the cover member.
3 more elements
A disc cartridge characterized by including:
- an aperture to access a disc-shaped medium, the aperture being formed in a case in which the disc medium is rotatably housed;
- a shutter member for opening/closing at least a part of the aperture;
- and
- a cover member having an aperture corresponding to the aperture, the shutter member being accommodated between the cover member and the case,
- wherein when the aperture is closed, the close-side end portion of the shutter member passes the aperture and is accommodated in a reception portion between the case and the cover member, and at least one of the edge portion of the close-side end portion of the shutter member and the edge portion of the reception port of the reception portion is chamfered to have a tapered structure.
2 more elements
A disc cartridge characterized by including:
- an aperture to access a disc-shaped medium which is provided to a case in which the disc medium is rotatably housed inside a cylindrical wall having a substantially cylindrical shape;
- a shutter main body having a flat-plate shape which is rotated to open/close at least a part of the aperture;
- and
- a shutter guide portion which is erectly provided to the shutter main body and curved along the cylindrical wall,
- wherein when the shutter main body is rotated in the closing direction of the aperture to close at least a part of the aperture while the shutter guide portion is guided along the cylindrical wall, the close-side end portion of the shutter main body passes the aperture and is accommodated between the case and the cover member, with a portion thereof abutting against the shutter guide portion directed at the entry side.
2 more elements
A disc cartridge by including:
- an aperture to access a disc-shaped medium which is provided to a case in which the disc medium is rotatably housed;
- a first shutter member which is rotated around the axial center of the disc medium to open/close a part of the aperture;
- a second shutter member which is rotated around a predetermined rotational center to open/close a part of the residual part of the aperture;
- interlocking means having an elongated hole formed in any one shutter member of the first shutter member and the second shutter member and a projecting portion which is provided to the other shutter member and fitted in the elongated hole, the interlocking means interlocking the first shutter member and the second shutter member while the projecting portion is moved in the longitudinal direction of the elongated hole,
- wherein the elongated hole has a linear portion for linearly guiding the projecting portion, and a bend portion which draws the first member and the second member up to each other just before the aperture is closed and eliminates the gap between the first shutter member and the second shutter member.
2 more elements
Dependencies are inferred from the claim text.