JPH051016Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an improvement of a shutter provided in a disk cartridge.

[Prior Art] A shutter attached to a conventional disk cartridge consists of a shutter body made of a metal plate and a bearing made of synthetic resin, and as shown in FIG.
The bearing 1 was attached to a mounting portion 11 of a shutter body 10 via a set screw 7.

[Problems to be solved by the invention] Assembling the shutter body and the bearing by screwing is complicated, requires many man-hours for assembly, and requires screw parts, resulting in high costs.

The present invention has been made to solve the above problems, and its purpose is to directly connect the shutter body and the bearing without using a set screw.

[Means for Solving the Problems] In order to achieve the above object, the features of the present invention are as shown in FIGS. 1 and 2. In a shutter consisting of a shutter main body 10 having a J-shaped cross section in which a plate portion 12 and a short plate portion 13 extend in the same direction, and a bearing 1 fixed to a mounting portion 11 protruding inward from the J-shape from an intermediate plate portion 14 of the shutter main body 10, Upper and lower rails 5, 5' extending parallel to the upper and lower sides are provided on the mounting plate part 11,
The bearing 1 is provided with upper and lower rail grooves 3 and 3' that fit into the upper and lower rails, and a notch 6 is formed on one side of the upper and lower rails 5 and 5' to prevent it from falling out at the back of the upper and lower rail grooves 3 and 3'. The reason lies in the fact that part 4 was formed.

[Operation] Fit the open ends of the upper and lower rail grooves 3, 3' of the bearing 1 shown in Fig. 1 from one side of the upper and lower rails 5, 5' of the shutter body 10 shown in Fig. 2 with the notches 6, and then When inserted along rails 5 and 5',
The bearing 1 is easily attached to the mounting part 11 of the shutter body 10.
Can be installed on. Retaining part 4 of bearing 1
Since the bearing 1 fits into the notch 6, there is no risk that the bearing 1 will come off from the shutter body 10 during use.

[Examples] Examples of the present invention will be described below with reference to the drawings.

A bearing 1 having a shaft hole 2 shown in FIG. 1 is a synthetic resin molded product, and upper and lower rail grooves 3, 3' provided in the bearing extend in the longitudinal direction from one end surface.
The width of rail grooves 3 and 3' is approximately 0.2 mm, and the depth is approximately
It is 1.2mm. A retaining portion 4 is provided at the back of the groove. As shown in an enlarged view in FIG. 4, the retaining portion 4 includes a protrusion 8 and a retaining groove 9 that bypasses the protrusion 8.

The shutter body 10 shown in Fig. 2 is made by pressing a stainless steel plate with a thickness of about 0.2 mm, and has a short plate part 13 and a long side part 12 extending in the same direction from the parallel upper and lower sides of the intermediate plate part 14. exhibits a glyph shape. The mounting portion 11 excluding the periphery of the intermediate plate portion 14 protrudes inside the J-shape. Upper and lower rails 5 with a height of about 1 mm, parallel to the upper and lower sides of the intermediate plate part 14, are attached to the mounting part 11,
5' is formed. A notch 6 with a width of about 1 mm is provided at one end of the rails 5, 5'.

As shown in FIG. 3, the bearing 1 can be easily attached to the shutter body 10 by fitting the rail grooves 3, 3' of the bearing 1 into the rails 5, 5' of the shutter body 10 and inserting it from one end. When the bearing 1 is completely inserted along the rails 5, 5', the protrusion 8 shown in FIG. 4 fits into the notch 6 shown in FIG. 2, so that the bearing 1 is fixed to the shutter body 10 and the assembly is completed. Once assembled, since the protrusion 8 does not come off from the notch 6, there is no risk that the bearing 1 will come off from the shutter body 10. The assembled shutter is attached to a disk cartridge 20, as shown in FIG. The slide shaft 21 of the cartridge passes through the shaft hole 2 of the bearing 1 shown in FIGS. 1 and 2. When the shutter body 10 is opened along the slide shaft 21, the clamper 23 and a portion of the disk 25 are exposed, making it possible to read the disk. The shutter body 10 is closed by a spring 22 hung on a bearing.

[Effects of the invention] As mentioned above, the shutter of this invention does not use set screws to assemble the shutter body and bearing, so assembly is easy and reliable, and there are fewer parts and fewer assembly steps than the conventional screw fastening method. Because of this, it has the excellent effect of reducing the cost of disk cartridges.

[Brief explanation of the drawing]

1 and 2 are perspective views of a bearing and a shutter main body according to an embodiment of the present invention, and FIG. 3 is a cross-sectional view of a shutter assembled by inserting the bearing shown in FIG. 1 into the shutter main body shown in FIG. FIG. 4 is an enlarged view of the retaining portion of the bearing, FIG. 5 is a bottom view of the disk cartridge with the shutter open, and FIG. 6 is a view corresponding to FIG. 3 of the conventional shutter. In the figure, numeral 1 is the bearing, 3 is the rail groove, and 4 is the bearing.
is the retaining part, 5 is the rail, 6 is the notch, 8 is the protrusion, 9 is the retaining groove, 10 is the shutter body, 1
1 is a mounting part, 12 is a long plate part, 13 is a short plate part, 14
indicate the intermediate plate portion, respectively.

Claims (1)

[Claims for Utility Model Registration] 1) The shutter body consists of a metal plate shutter body and a synthetic resin bearing. The intermediate plate part has a J-shaped cross section consisting of a plate part, the intermediate plate part is provided with a mounting part protruding inside the J-shape, and the bearing is a shutter fixed to the mounting part, and the bearing is a shutter fixed to the mounting part, and Upper and lower rails are formed parallel to the upper and lower sides of the intermediate plate part, a notch is provided at one end of the rail, upper and lower rail grooves that engage with the rail are formed in the bearing, and the inner part of the rail groove is formed. A shutter for a disk cartridge, characterized in that the shutter is provided with a retaining portion that engages with the notch. 2) The shutter for a disk cartridge according to claim 1, wherein the retaining portion comprises a protrusion and a retaining groove that bypasses the protrusion.