JPH0330164A - Mounting method for shutter in disk cartridge - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for attaching a shutter to a disk cartridge that houses a recording medium such as an optical disk or a magnetic disk.

[Conventional technology]

Generally, a recording medium such as an optical disk or a magnetic disk is housed in a plastic disk cartridge. A head insertion hole for inserting a read/write head provided on the recording/reproducing device side is formed in this disk cartridge, and this head insertion hole can be opened and closed by a shutter provided on the disk cartridge.

As shown in FIGS. 8 and 9, this shutter 1 is fixed to a slider 2, and the slider 2 is configured to slide along a guide portion formed at the tip of the disk cartridge on the recording/reproducing device side. There is.

Furthermore, the shutter 1 is fixed to the slider 2 with screws 3.

[Problem to be solved by the invention]

However, in the conventional method, the slider 2 must be attached to the disk cartridge when the upper half piece 4 and the lower half piece 5 that make up the disk cartridge body are brought together, making the operation of attaching the slider 2 troublesome. There is.

In addition, since the shutter 1 is attached to the slider 2 using the screw 3 on the slider attached to the disk cartridge body as described above, positioning the shutter 1 with respect to the slider 2 is troublesome, and the screw tightening operation itself is difficult. This also makes the assembly work complicated as a whole.

SUMMARY OF THE INVENTION In view of the above-mentioned problems, it is an object of the present invention to provide a method for attaching a shutter of a disc cartridge to a disc cartridge main body with one touch.

[Means to solve the problem]

In order to solve the above-mentioned problems, the present invention fixes a slider to the shutter of a disk cartridge by insert molding, and at the same time integrates a leg piece that is to be engaged with a guide portion at the tip of the disk cartridge on the recording/reproducing device side with the base of the slider. The shutter is molded, and then the shutter is applied to the disc cartridge to elastically deform the leg piece and slidably engage with the guide part.

[Effect]

The slider is fixed to the shutter by insert molding, and the leg pieces are also integrally molded with the slider at the same time, so the positional relationship between the slider and shutter can be made more accurate than before, and by extension, the positioning with respect to the disk cartridge can also be made more accurate. Vine. Therefore, the slider moves smoothly even after the shutter is attached, and the sliding movement of the shutter on the cartridge is not disturbed.

Furthermore, when attaching the shutter to the disk cartridge, the legs are elastically deformed and engaged with the guide portion at the tip of the disk cartridge on the recording/reproducing device side, so that the shutter can be attached easily and quickly. Also,
In that case, the disk cartridge body can be assembled in advance.

〔Example〕

Next, embodiments of the present invention will be described based on the drawings.

Embodiment 1 As shown in FIG. 5, a disk cartridge 7 to which a shutter 6 is attached by the method according to the present invention is composed of an upper half piece 8 and a lower half piece 9 superimposed on the upper half piece 8. Both upper and lower halves 8 and 9 are made of polycarbonate resin or A
Molded from BS resin.

At the center of the disk cartridge 7 is a turntable insertion hole 10 into which a turntable provided on the recording/reproducing device side is inserted, and a head insertion hole 1 adjacent to the turntable insertion hole 10 into which a read/write head is inserted.
1 is formed.

Both holes 10 and 11 are opened and closed by a shutter 6 provided on the disk cartridge 7. The shutter 6 is always urged in the closing direction by a spring 12, and the lower end of the shutter 6 is guided by a guide plate 13 attached to the surface of the disk cartridge 7.

It should be noted that what is provided in the disk cartridge portion below the guide plate 13 and indicated by the reference numeral 14.14 is a double write prevention device.

The shutter 6 is made by bending a stainless steel plate at its center, and has a head plate 15 as shown in FIGS.
A slider 16 made of smooth polyacetal resin or fluorine resin is fixed to the inner surface of the slider 16 .

The head plate 15 of the shutter 6 is provided with a plurality of holes 17 through which the molten synthetic resin for molding the slider 16 passes, and around each hole 17 is a recess 18 for storing the synthetic resin. It becomes.

The slider 16 includes a base portion 19 that extends in close contact with the lower surface of the head plate 15. The synthetic resin constituting the base 19 passes through the hole t7 and reaches the recess 18, where it forms a rivet head-shaped fixing piece 20. In addition, the base 19
A plurality of pairs of legs 21 are suspended from the slider 16 intermittently along the longitudinal direction of the slider 16. Each pair of leg pieces 2l has a saddle shape, and a projection 22 projecting outward is provided at the lower end thereof.

On the other hand, the leg piece 2 is attached to the tip of the recording/reproducing device side of the disk cartridge 7 to which the slider 16 is to be attached.
A guide portion is formed which engages with 1. The guide portion includes two pieces 123 extending oppositely within the upper and lower halves 8.9.
．． It has 23.

The leg piece 21 is inserted between the guide parts, and the protrusion 22 at the lower end of the leg piece 2↓ enters into the groove 23.

This allows the slider l6 to slide along the guide portion, and prevents it from easily falling off from the guide portion.

Each of the grooves 23 is formed by two protrusions 24 and 25, and the outer protrusion 24 is provided with a slope 26 toward the outside of the disk cartridge 7.

A pin receiving hole 27 is formed at the rear of the slider 16 for receiving an open/close bin (not shown) provided on the reading/writing device side, and an opening is bored in the shutter 6 corresponding to the pin receiving hole 27. ing.

Next, a method of attaching the shutter 6 to the disc cartridge body will be explained.

As shown in FIG. 3, the slider 16 is molded using an insert molding die (not shown) and is fixed to the shutter 6 at the same time. At the same time as this molding, the leg piece 21 to be engaged with the guide portion at the recording/reproducing device side end of the disk cartridge 7 is integrally molded with the base portion 19 of the slider l6.

Next, as shown in FIG. 4, place the shutter L6 over the guide portion of the disk cartridge 7,
The leg piece 21 of the slider 16 is pressed against the inclined surface 26 of the protrusion 24. When the shutter 6 is pushed further in, the leg piece 21 is elastically deformed, climbs over the protrusion 24, enters the groove 23, and then returns to its original shape. This completes the attachment of the shutter 6 to the disk cartridge 7 as shown in FIG.

Since the protrusion 22 of the leg piece 21 slides along the groove 23, the shutter 6 can move along the disk cartridge 7 together with the slider 16.

Embodiment 2 As shown in FIGS. 6 and 7, the head plate 29 in the bent position of the shutter 28 is made of a molten synthetic resin with good slippage similar to that in Embodiment 1 in which the slider 30 is formed. Rectangular holes 31 are bored at multiple locations. Each hole 31 is formed by making a substantially U-shaped cut in the head plate 29 and bending the cut portion inward of the shutter. The synthetic resin forming the slider 30 firmly joins the base 33 of the slider 30 to the shutter 28 by adhering to the inner edge of the hole 31 and around the folded piece 32 located on one side of the hole.

The slider 30 in this shutter 28 is also shaped by insert molding in the same manner as described above, and is fixed inside the shutter 28.

Next, in the same manner as described above, the shutter 28 is placed over the guide portion of the disk cartridge, and the leg piece 34 of the slider 30 is pressed against the inclined surface 36 of the protrusion 35.

When the shutter 28 is pushed further in, the leg piece 34 is elastically deformed and overcomes the protrusion 35, and the protrusion 37 at the tip of the leg piece 34 enters the groove 38 and returns to its original shape. This completes the attachment of the shutter 28 to the disk cartridge as shown in FIGS. 6 and 7.

〔Effect of the invention〕

As described above, the present invention fixes the slider to the shutter by insert molding, and also integrally molds the leg pieces with the slider at the same time, so that the positional relationship between the slider and the shutter can be made more accurate from the beginning. Furthermore, positioning with respect to the disk cartridge can also be performed accurately. Therefore, the effect of smoothing the movement of the slider after the shutter is attached is achieved.

Furthermore, when attaching the shutter to the disk cartridge, the legs are elastically deformed and engaged with the guide portion at the tip of the disk cartridge on the recording/reproducing device side, so that the shutter can be attached easily and quickly. Also,
Since the disc cartridge main body can be assembled before the shutter is installed, there is no problem such as the disc cartridge main body being disassembled during the shutter installation operation.

[Brief explanation of drawings]

1 to 5 show one embodiment of the present invention, FIG. 1 is a perspective view showing the slider together with the shutter, and FIG. 2 is a perspective view showing the slider together with the shutter.
3 is a partially cutaway sectional view showing the slider made by insert molding together with the shutter, and FIG. 4 is a portion of the shutter shown in FIG. 3 about to be attached to the disk cartridge body. 5 is a perspective view of the disk cartridge with the shutter closed, FIGS. 6 and 7 show other embodiments of the present invention, and FIG. 6 shows the shutter after insert molding together with the slider. 7 is a sectional view corresponding to FIG. 2, FIGS. 8 and 9 show a conventional example, FIG. 8 is an exploded perspective view of the shutter and slider, and FIG. 9 is a sectional view corresponding to FIG. FIG. 3 is a partially cutaway vertical cross-sectional view of the shutter fixedly attached to the disk cartridge. 6...Shutter, 7...Disk cartridge, 1
5...Headboard, 16...Slider, Machining 7...Hole, 1
8... Recess, 19... Base, 20... Fixing piece, 2
1... Leg piece, 22... Protrusion, 23... Groove, 24.
25... Convex strip, 26... Slope, 28... Shutter, 29... Head plate, 30... Slider, 31... Hole, 32... Inward folding piece, 33... Base, 34... Leg, 35... Protrusion, 36... Slope, 37... Protrusion,
38... Groove.

Claims (1)

[Claims] A slider is fixed to the shutter of a disk cartridge by insert molding, and at the same time, a leg piece to be engaged with a guide portion at the tip of the recording/reproducing device side of the disk cartridge is integrally molded with the base of the slider, and then the shutter is attached to the disk cartridge. A method for attaching a shutter to a disk cartridge, characterized in that the leg piece is slidably engaged with the guide part while elastically deforming the leg piece.