JPH0648623Y2 - Disc cartridge - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a disk cartridge for housing an optical disk or a magnetic disk.

[Conventional technology]

A conventional magnetic disk has a cartridge main body C composed of two sheets 1 and 2, as shown in FIGS. 6 and 7, for example.
In the center of the case C, a spindle opening 3 for rotating the disc is provided.
Are formed. A head insertion opening 5 for reading and writing is provided adjacent to the spindle opening 3.
These openings 3 and 5 are opened and closed by a shutter 7. Further, a shallow concave portion O is provided in a sliding contact portion on both surfaces of the casing C with the shutter 7, and the concave portion O prevents the thickness of the cartridge from increasing due to the provision of the shutter, and It has the function of a guide. A spring 15 is installed at the upper left end of the recess O at the front end of the housing to bias the opening in the closing direction.

[Problems to be solved by the device]

However, in such a disc cartridge, the housing should be flexible or inflexible, and is made of a molded product such as polystyrene, polyethylene, polypropylene, or polyvinyl chloride, and the two plates are screwed together. , Are integrally joined by appropriate means such as ultrasonic fusion.

By providing the shutter guide recess O as described above in the housing thus manufactured, the mechanical strength of the housing which is a synthetic resin molded product is lowered as described above. Further bias spring
15 is an insertion opening provided at the front left end (upper left side in FIG. 6) of the casing as shown in FIGS. 6 and 8 after the shells 1 and 2 are combined in the cartridge construction process. Inserted through 11. Therefore, the insertion opening 11 is not closed even after the product is completed and remains open, which significantly reduces the strength of the cartridge housing and causes deformation and damage during use.

In view of this point, the present invention has an object to provide a cartridge having a strong mechanical strength with a shutter biasing spring insertion portion of a cartridge housing having a reinforcing structure.

[Means for Solving the Problems]

Therefore, the present invention provides a plate-shaped cartridge housing, at least a shutter slidably attached to the cartridge housing to open and close the head insertion opening formed in the cartridge housing, and the head insertion opening. In a disk cartridge having a spring for urging the shutter in a closing direction, a casing wall of a spring housing portion for housing the spring has a reinforcing structure.

[Action]

In the disk cartridge of the present invention, at least the wall of the spring accommodating portion for urging the shutter provided for opening and closing the head insertion opening formed in the cartridge housing in the closing direction of the head insertion opening has a reinforcing structure. If the wall surface of the spring accommodating portion is thus reinforced, it is possible to reinforce the decrease in the mechanical strength of the housing.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, for example, an optical disk cartridge of the present invention has a cartridge housing C, which is formed by combining an upper half piece 1 and a lower half piece 2, and the central portion of the housing C is A spindle opening 3 into which a spindle for rotating a disk is inserted is formed, and a head insertion opening 5 into which a head on the side of a reading / writing device is inserted is provided on the front end side thereof, and the insertion opening 5 is opened and closed. The shutter 7 is provided so as to be slidable in the left-right direction. The shutter 7 is bent at the front end of the housing C and extended to the back side.

A spring 15 is housed on the left side of the front end of the housing C, and the shutter 7 is biased by the spring 15 in a direction to close the head insertion opening 5.

A recess O for guiding the sliding of the shutter 7 is formed on both surfaces of the housing, and a right end surface 19 of the recess O serves as a shutter closing position stopper and a left end surface 21 serves as an opening position stopper. Also, as shown in FIG. 2, a storage portion for the spring 15
A spring insertion port 11 for inserting the spring is provided on the end surface of the spring 30, and the spring 15 is accommodated in the spring accommodating portion 30 through the insertion port 11.

The operation of the cartridge will now be described. When the disc cartridge is not used, the shutter 7 is biased by the spring 15 as shown in FIG. 1 and is located in the recess O on the right side in the figure to close the head insertion opening 5. . When the cartridge is used, an opening / closing pin (not shown) on the driving device side engages with the right end surface of the shutter 7 in the drawing to move the shutter 7 to the left in the drawing to open the head insertion port 5.

Further, a spring storage portion that stores the spring 15
Reinforcing protrusions S are provided on the wall surface of the housing of 30 so as not to interfere with the movement of the spring 15, so that the above-described shutter sliding operation is smooth without deformation of the housing.

As shown in FIGS. 3 and 4, the reinforcing projections S are obliquely provided on the upper half piece 1 so as to cross the corners thereof, and the lower half piece 2
May be formed so as to extend in a direction orthogonal to the extending direction of the reinforcing protrusion S of the upper half piece 1 of the reinforcing protrusion S.
It may be formed in a cross shape as shown in the figure. The reinforcing protrusion S may be formed on both the wall surfaces of the upper half piece 1 and the lower half piece 2, or may be formed on only one side. Further, the forming direction thereof may be parallel to the sides of the upper and lower halves 1 and 2.

[Effect of device]

Since the present invention is configured as described above, it is possible to reinforce the spring accommodating portion for urging the shutter, which is weak in strength, and to effectively prevent deformation and damage of the housing.

[Brief description of drawings]

FIG. 1 is a perspective view of a cartridge of the present invention, FIG. 2 is a perspective view of a cartridge biasing spring insertion port of the present invention, FIG. 3 is a perspective view showing an inner surface of an upper half of a cartridge of the present invention, and FIG. FIG. 5 is a perspective view showing the inner surface of the lower half of the cartridge of the invention, FIG. 5 is a perspective view of the inner surface of the upper half of the cartridge showing another embodiment of the invention, FIG. 6 is a perspective view of a conventional cartridge, and FIG. FIG. 8 is a sectional view of a conventional cartridge, and FIG. 8 is a perspective view of a conventional cartridge urging spring insertion port. C ... Cartridge housing, 1 ... cartridge upper half,
2 ... Lower half of cartridge, 7 ... Shutter, 11 ... Spring insertion port, 15 ... Spring, S ... Reinforcing protrusion.

Claims (1)

[Scope of utility model registration request] 1. A plate-shaped cartridge housing, a shutter slidably attached to the cartridge housing for opening and closing at least a head insertion opening formed in the cartridge housing, and the head insertion opening closed. In a disk cartridge having a spring for urging the shutter in a direction to move, a housing wall of a spring housing portion for housing the spring has a reinforcing structure.