Dynamic magnetic information storage or retrieval – Record medium – In container
Patent
1995-11-24
1997-11-25
Wolff, John H.
Dynamic magnetic information storage or retrieval
Record medium
In container
369291, G11B 2303
Patent
active
056918682
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a disk cartridge in which a shutter is slidably mounted on a shell body through a slider so as to open and close an aperture provided on the shell body for receiving a head or spindle, and particularly to a disk cartridge in which coupling of the shutter with the slider is carried out simply, easily, surely, and quickly without using tapping screws.
BACKGROUND ART
There is known a disk cartridge (for example, 3.5-inch MO disk cartridge) as shown in FIG. 25, in which a shutter 101 is slidably mounted on a shell body 103 through a slider 102 to open and close an aperture 104 provided on the shell body 103 for receiving a magnetic head.
The shutter 101 is formed of a generally U-shaped metal plate and with screw-insertion holes (not shown) at both ends of a surface mating with the slider 102.
The slider 102 is made of a synthetic resin and coupled with the shutter 101 by screws 105 and 106 inserted into the screw-insertion holes of the shutter 101.
The shell body 103 is composed of an upper half 111 and a lower half 112 and accommodates a disk-shaped recording medium 113 (hereinafter referred to as disk) interposed between these upper and lower halves 111 and 112.
The conventional disk cartridge as described above has the following problems because of the construction in which the shutter 101 is coupled with the slider 102 by using the screws 105 and 108.
(1) Using of the screws 105 and 108 causes an increase in the number of parts, leading to a higher manufacturing cost.
(2) Tightening of the screws 108 and 106 for coupling the shutter 101 with the slider 102 causes a reduction of assembling efficiency. This is because the tightening must be generally performed by using a parts feeder which is used for bringing the screws into line and transporting them to a tightening device. However, the screws tend to stick on the parts feeder during the transportation.
The present invention contemplates to solve the conventional problems as mentioned above.
DISCLOSURE OF THE INVENTION
The present invention aims to provide a disk cartridge comprising: a shell body accommodating a disk rotatably disposed therein;
a slider disposed slidably along one end of the shell body and made of synthetic resin; and
a shutter secured to the slider for opening and closing a head or spindle insertion aperture formed on the shell body in association with sliding movement of the slider;
the shutter having a plurality of pin-insertion holes formed on its mating surface, the slider having a plurality of connecting pins formed on its mating surface which mates with the mating surface of the shutter, the connecting pins being inserted into the pin-insertion holes and plastic-deformed at distal ends thereof to be provided at the distal ends with heads having greater diameters than the pin-insertion holes so that the shutter is interposed between the heads and the mating surface of the slider whereby the shutter and the slider are coupled together.
Therefore, the disk cartridge according to the present invention can dispense with the screws for connecting the shutter and the slider which are used in the conventional disk cartridge. This leads to a reduction in the number of parts.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of a disk cartridge of a first embodiment of the present invention.
FIG. 2 is a sectional view taken along line A--A in FIG. 1.
FIG. 3 is a plan view of an essential portion of the disk cartridge.
FIG. 4 is a perspective view of the disk cartridge before assembled.
FIG. 5 is a perspective view showing a shutter and a slider.
FIG. 6 is a plan view showing a condition in which a pin is inserted into a pin-insertion hole.
FIG. 7 is a sectional view showing the condition in which the pin is inserted into the pin-insertion hole.
FIG. 8 is a sectional view showing a condition in which the shutter is mounted on a shell body.
FIG. 9 is a perspective view showing a shutter and a slider of a second embodiment of the present invention.
FIG. 10 is a plan view s
REFERENCES:
patent: 5050030 (1991-09-01), Nemoto et al.
patent: 5121380 (1992-06-01), Fujita et al.
patent: 5140490 (1992-08-01), Fujita et al.
patent: 5325257 (1994-06-01), Akijama et al.
patent: 5408458 (1995-04-01), Akiyama
Japanese Patent Provisional Publication No. 3-30164.
Japanese Patent Provisional Publication No. 4-351773.
Japanese Patent Provisional Publication No. 5-234305.
Abe Hiroyuki
Funawatari Takatsugu
Ishikawa Hiroyuki
Niizaka Kazuo
Maioli Jay H.
Sony Corporation
Wolff John H.
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