JPH01248377A - Disk cartridge - Google Patents

Abstract

PURPOSE:To move a shutter smoothly and to easily connect a slider to a sliding belt by providing an almost cylindrical projecting part on either side of the slider or the sliding belt and an almost cylindrical recessed part on the other side, respectively, and engaging them. CONSTITUTION:The moving part of the shutter 11 is constituted of a rail shape slider 12 and a belt shape sliding belt 19, and the almost cylindrical projecting part 20 is provided on either side the slider 12 or the sliding belt 19, and the almost cylindrical recessed part 21 on the other side, and the slider 12 is connected to the sliding belt 19 by engaging them. In other words, at a linked part, the cylindrical projecting part 20 provided on one end side of the sliding belt 19 is inserted to the cylindrical recessed part 21 provided on the slider 12 in the cylindrical direction of a cylinder. In such a way, it is possible to connect the slider to the sliding belt easily.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is used in a recording/reproducing device for recording, reproducing, or erasing information on a disc-shaped disc, and for example, a disc that stores a disc such as a floppy disc or an optical disc inside. It concerns cartridges.

Prior Art Conventional disk cartridges include, for example, the Japanese Patent Application Laid-Open No. 6
There is one shown in Japanese Patent No. 1-236083.

FIG. 4 shows a perspective view of the external appearance of this conventional disk cartridge, and FIG. 5 shows a perspective view of the internal structure of the same conventional disk cartridge.

Reference numeral 31 denotes a disk, and a driving hole 31a is formed in the center thereof to engage with a rotary drive body for rotationally driving the disk 31. Reference numeral 32 denotes a disc casing, which rotatably accommodates the disc 31. The disk car 1 is formed by a ridge housing 32, a half 33a, and a lower half 33b. The upper half 33a and the lower half 33b have sensor holes 34a and 34b into which a rotary drive body (not shown) is inserted, and a length into which a head (not shown) into which information is recorded, reproduced or erased is inserted. Hole-shaped head insertion holes 35a and 35b and recesses 36a and 36b into which shutters to be described later are inserted are provided to face each other.

39 is a shutter and has a center hole 34a.

34b and the head insertion holes 35a and 35b are closed.

Reference numeral 40 denotes a protruding piece formed by bending a part of the shutter 39 inward, and is inserted into the guide groove 3 and moves along the guide groove 37 to guide the shutter 39. 4
1 is a claw formed by bending a part of the shutter 39 inward, and can be inserted into the elongated opening 38 formed when the ``Ni-no-733a'' and the ``Bottom--733b'' are overlapped. It is configured.

Reference numeral 42 denotes a slider that moves inside the shutter 39 and inside the disk car 1-ridge housing 32 to move the shutter 39 to the center hole 34a.

34b and the head insertion holes 35a, 35b are driven to a position where they are closed or opened. The claw 41 of the shutter 39 is inserted into the center of the slider 42, and the shutter 3
A retaining hole 43 for coupling the slider 42 and a protrusion 44 for engaging an external member (not shown) to move the slider 42 are provided. A tension spring 45 is locked in the center of the slider 42, and when the external member and the protrusion 44 are disengaged, the slider 42 is moved in the direction of arrow H by the biasing force of the tension spring 45.

That is, when the slider 42 is moved in the direction of arrow G by an external member, the shutter 39 moves in the direction of arrow E in conjunction with the movement of the slider 42, thereby opening the center holes 34a, 34b and the head insertion holes 35a, 35b. It is opened to allow insertion of the rotational drive body and head described above. Further, when the slider 42 is disengaged from the external member, the shack 39 is pulled in the direction of arrow F by the biasing force of the tension spring 45 and closes the center holes 34a, 34b and the head insertion holes 35a, 35b.

Problems to be Solved by the Invention However, in the above configuration, the upper half 33a and the lower half 33b are generally formed by injection molding resin, and the shutter 39 is made of metal and has a thickness of 0. Since it is composed of an elastic body such as a plate spring of 0.0 and 3.0, the protruding piece 4o of the shutter 39 gets caught when moving in the guide groove 37, making it impossible for the shutter 39 to move smoothly. A problem was occurring.

Therefore, a system has been proposed in which a part of the slider is made into a rail shape to increase the rigidity, and the rail-like slider also serves as a guide for the movement of the shutters 6 and 7. However, in resin molding, However, it was extremely difficult to integrally mold a thick rail-like part onto a thin-walled slider due to the occurrence of "sink marks." Furthermore, a method has been proposed in which a band-shaped part is fastened to a rail-shaped part with screws, but this method has the problem of deteriorating assembly efficiency.

SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to provide a disk cartridge having a structure in which a shutter can be smoothly moved and a slider portion can be easily installed.

Means for Solving the Problems The present invention constitutes a moving part of the shutter by a rail-shaped slider and a band-shaped slide band, and a substantially cylindrical convex part is formed on either the slider or the slide band, and the other side is provided with a substantially cylindrical convex part. A substantially cylindrical recess is provided, and the slider and the slide band are connected by engaging the substantially cylindrical protrusion and the substantially cylindrical recess.

According to the above-described configuration, the present invention has a cylindrical convex portion provided at one end of the slide band on the four cylindrical parts provided on the slider at the connecting portion between the rail-shaped slider and the band-shaped slide band. By inserting the slider in the direction of the cylinder, the slider and the slide band can be easily connected, and
Since the slide band only needs to be made thick in one part, there are no problems with formability.

Embodiment FIG. 1 shows an exploded perspective view of a disk cartridge in an embodiment of the present invention, FIG. 2 shows a perspective view of the connecting portion between the slider and the slide band, and FIG. 1 also shows a perspective view of the appearance of the disk cartridge L-ridge.

Reference numeral 1 denotes a disk, and a drive hole 1a is formed in the center of the disk, into which a rotary drive body (not shown) for rotationally driving the disk 1 is inserted and engaged. Reference numeral 2 denotes a disc cartridge housing, which rotatably accommodates the disc 1. The disk cartridge housing 2 is formed by an upper half 3a and a lower half 3b. The upper half 3a and the lower half 3b are made by injection molding, for example, polyacetal resin. The upper half 3a and the lower half 3b have center holes 4a and 4b into which a rotary drive body is inserted, and a long hole-shaped head into which a head (not shown) for recording, reproducing, or erasing the joyful day is inserted. Insertion 5a.

5b and a recess sa into which a shutter (to be described later) can be inserted;
6b are provided facing each other. Further, the upper half 3a and the lower half 3b are fixed with screws 24.

A shutter 11 opens and closes the center holes 4a, 4b and the head insertion holes 5a, 5b.

The shutter 11 is made of metal and has a thickness of 0.2 mm to 0.
．． It is made of an elastic body such as a three-barrel leaf spring.

Reference numeral 12 designates a slider whose groove 13 engages with and is guided by a convex guide portion 14 of the lower half 3b (the upper half 3a also has a convex guide portion at a position facing this). The slider 12 is made by injection molding, for example, polysecure resin. The shutter 11, the slider 12, the claw 15 formed by bending a part of the shutter 119 inward, the groove 16 of the slider 12, the hole 17 provided in the shutter 11, and the protrusion 18 provided in the slider 12. It is fixed by locking.

In other words, since the slider 12 made of resin is guided by the convex guide portion 14 made of resin, it is less likely to get caught and can be moved smoothly.

A slide band 19 has a cylindrical projection 20 formed at one end thereof, and is connected to the slider 12 by inserting the cylindrical projection 2o into a cylindrical recess 21 of the slider 12.

Therefore, when forming the cylindrical convex portion 20, only a very small portion of the slide band 19 needs to be thickened, so that molding can be facilitated. Further, when assembling, it is only necessary to insert the cylindrical convex part 2o into the cylindrical concave part 21, and this can be done with a simple operation.

The other end of the slide band 19 is provided with a protrusion 22 that engages with an external member (not shown) to move the slide band 19. A tension spring 23 is fixed to the center of the slider 12, and when the outer member 10, -1 is disengaged from the protrusion 17, the slider 12 is moved in the direction indicated by the arrow by the biasing force of the tension spring 23. . That is, when the slide band 19 is moved in the direction of arrow C by an external member, the shutter 11 moves in the direction of the arrow C in conjunction with the movement of the slider 12, and the recenter holes 4a, 4b and the head insertion hole. 5a and 5b are opened to allow insertion of the aforementioned rotary drive body and head. Furthermore, when the slide band 19 is disengaged from the external member, the shutter 11 is pulled in the direction of arrow B by the urging force of the tension spring 23, thereby opening the center holes 4a, 4b and the head insertion hole 5a.
, 5b is occluded.

Advantages of the Invention As described above, according to the present invention, the shutter can be moved smoothly and the slider and the slide band can be easily connected, which has great practical effects.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of a disk cartridge according to an embodiment of the present invention, FIG. 2 is a perspective view of the connecting portion between the slider and the slide band, FIG. 3 is an external perspective view of the disk cartridge, and FIG. The figure shows the external appearance of a conventional disk cartridge, and FIG. 5 is a perspective view of the internal structure of the conventional disk cartridge. 1...disk, 2...disk cartridge, housing, 11...shutter, 12...-
...Slider, 19...Slide band, 20.
...Cylindrical convex part, 21-...Cylindrical four parts. Name of agent: Patent attorney Toshio Nakao and 1 other person 1 To Kukan Toga'! tO times ℃N Mope atmosphere peeling〉 tki

Claims (1)

[Claims] having an upper half and a lower half for rotatably housing a disk therein, a center hole into which a rotary drive body for rotationally driving the disk is inserted, and recording information on the disk;
a cartridge housing provided with a head insertion hole into which a head to be reproduced or erased is inserted; and a shutter that is attached to move on the outer surface of the cartridge housing and opens and closes the center hole and the head insertion hole. a slider that engages with the shutter and guides the shutter to an open position and a closed position with respect to the center hole and the head insertion hole; one end is engaged with the slider and the other end is engaged with an external member, respectively. a slide band that is fitted together to move the slider; and a slide band that is hooked at one end to the inside of the cartridge housing and at the other end to the slider so that the shutter moves the slider in a direction in which the shutter closes the center hole and the head insertion hole. a substantially cylindrical convex portion is provided on one of the slider and the slide band, and a substantially cylindrical concave portion is provided on the other, and the substantially cylindrical convex portion and the substantially circular A disk cartridge characterized in that the slider and the slide band are connected by engaging with a columnar recess.