JP2864008B2 - cartridge - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk cartridge in which a flexible disk, a hard disk, and particularly an optical disk is rotatably housed in a case.

[0002]

2. Description of the Related Art Generally, an information medium, for example, a magnetic disk, an optical disk, a magneto-optical disk, or a tape is set in a recording / reproducing apparatus as a cartridge housed in a case. Conventional media of this type are susceptible to dust and dirt during handling, and are especially susceptible to scratches.Because they are greatly affected by temperature changes, openings such as the head insertion hole and drive shaft insertion hole provided in the case are required. It is known to have a shutter that opens and closes when a disk is used or not used.

[0003]

In a conventional cartridge having a shutter for opening and closing an opening formed in a case, a sliding guide is fitted and provided in a slide groove. Is inserted into the slide groove from the end of the slide guide. However, since the end of the slide guide is straight, the shutter must be inserted with the shutter opened wider, the assembling work is complicated, the production efficiency is poor, and there is a problem in assemblability. was there. The present invention is intended to eliminate these conventional disadvantages, and significantly improves assemblability and improves the slidability without the tip of the sliding guide of the shutter being caught on the case or shaving the case. It can be operated smoothly and without malfunction,
The aim is to improve the reliability by improving safety and to make the cartridge easy and inexpensive to manufacture.

[0004]

According to the present invention, a medium is accommodated in a case having an opening into which a recording / reproducing head and a drive shaft can be inserted, and a shutter for opening and closing the opening is slidably provided. In the cartridge, a sliding guide 10 having a substantially U-shaped cross section is provided at positions protruding from both side ends of the shutter, and one end of the sliding guide 10 has an outer edge outside the case. Concave groove 12 formed on the surface
A bent portion 10 ₂ which is inserted into, inner edge is formed as a guide piece 10 ₄ was bent projecting in a direction entering from the case side surface in the interior between the upper and lower cases, the distal edge 10 of the guide piece 10 _4
3 is a cartridge which is expanded outward.

[0005]

When the shutter is assembled in the case, the inner edge of the sliding guide of the shutter is expanded outward.
The shutter is easy to insert, can be incorporated without opening the shutter widely, and when the sliding guide of the shutter is inserted into the sliding groove of the case and slides, the leading edge of the inner edge of the sliding guide. Is used without contact with the case, the movement of the shutter is smooth, and the reliability is remarkably improved without occurrence of a scraping phenomenon.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to an example of a disk cartridge shown in FIGS. 1 to 4. A disk medium 2 as an information medium is accommodated in a case 1 and an opening 3 such as a head insertion hole. Is a cartridge provided with a shutter 4 having a substantially U-shaped cross section for opening and closing the opening 3 in a slidable manner, wherein the case 1 comprises an upper case and a lower case. The shutter 4 in 1
Slide guides 10 each having a U-shaped cross section are provided at positions protruding from both end edges of the case 1, and the slide guides 10 are inserted into the inside of the case 1 from side surfaces of the case 1.
Includes a case 1, the sliding guide 10 of one side end side of the shutter 4, the bent portion 10 ₂ which is inserted into concave groove 12 formed in the lower case exterior to the outer edge, the inner edge guide piece 1 which projects through the bent root portion 10 ₁ in a direction into the interior of the case side so as to sandwich the case
0 ₄ includes a are flared tip edge 10 ₃ of the guide piece 10 ₄ outwardly. Guide piece ₁₀₄ is guided in contact with the protrusion upper surface of the lower case constituting the slide groove 11.

In this case, as the slide groove 11,
It is to be interposed and deployed on the joint surface of the upper and lower cases,
The sliding guide 10 of the shutter 4 has a gap into which the bent end of the sliding guide 10 is fitted. The sliding guide 10 of the shutter 4 is opposed to positions protruding outward from both ends of the shutter plate of the shutter 4. The case 1 is fitted and supported so as to sandwich the case 1 from both upper and lower surfaces. Also,
The guide piece 10 ₄ with a leading edge 10 _third inner edge of the sliding guide 10 is intended to be inserted into the slide groove 11 formed in the joint surface position of the upper and lower cases, guide pieces 10 ₄ during insertion leading edge 10 ₃ of because they diverge outward, are those inserted easily slide groove 11 for sliding the protrusion upper surface of the lower case smoothly.

In the drawing, reference numeral 5 denotes a shutter area for sliding the shutter 4 having a U-shaped cross section, and a concave surface formed on the outer surface of the case. 6 is a disk hub, 7 is a hub fitting hole, 8 is an erasure prevention plug, 9 is a shutter lock, 14
Denotes a medium storage unit, 15 denotes a label area, and 16 denotes a visible part. 13 is a recess formed on the end edge of the slide groove 11 with respect to the bent root portion 10 _1. The case 1 is selected from various types of cartridge-type shells that store disk-shaped media such as floppy disks, compact disks, video disks, and optical disks.

In the embodiment shown in FIGS. 5 and 6, the upper case of the case 1 has no window, that is, it is applied to a shell having an opening only on one side of the case 1, and a shutter 4 is provided.
Single shutter plate and opposite to it consists of a contact piece which is bent into a U-shaped sliding guide 10 is concave groove the folding unit 10 _2, the guide piece 10 ₄ and spreader tip edge 10 ₃ .

[0010]

According to the present invention, there is provided a cartridge containing a medium in a case having an opening into which a recording / reproducing head and a drive shaft can be inserted, and slidably provided with a shutter for opening and closing the opening. A sliding guide having a U-shaped cross section is provided at a position protruding from both side ends of the shutter, and one of the sliding guides on one side is formed with a concave groove having an outer edge formed on the outer surface of the lower case. By forming a bent portion to be inserted, the inner edge is formed as a guide piece bent and protruded from the case side in a direction to enter the interior between the upper and lower cases, and by expanding the tip edge of the guide piece outward, When assembling the shutter into the case, the leading edge of the guide piece slides smoothly on the upper surface of the projecting portion of the lower case, so that the shutter can be easily inserted and can be incorporated without opening the shutter widely. Movement When the guide is inserted into the slide groove of the case and slides, the end of the slide guide does not contact the case, the shutter moves smoothly, and the shutter can be opened and closed safely without malfunction of the shutter. In addition, since there is little occurrence of case damage and shavings such as rubbing or shaving of the case when opening and closing the shutter, reliability can be significantly improved without hindering recording / reproduction such as dropout, and quality improvement. In addition, there are practical effects such as improvement in durability and easy and inexpensive manufacture.

[Brief description of the drawings]

FIG. 1 is a plan view of an embodiment of the present invention.

FIG. 2 is a perspective view of the example of FIG. 1 in a separated state.

FIG. 3 is an enlarged perspective view of the shutter of the example of FIG. 1;

FIG. 4 is an enlarged vertical sectional view taken along line AA of FIG.

FIG. 5 is a perspective view showing a state where a shutter according to another embodiment of the present invention is separated.

6 is an enlarged vertical sectional view taken along line BB of FIG. 5;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Case 2 Disc-shaped medium 3 Opening 4 Shutter 5 Shutter area 10 Sliding guide 10 ₁ Root part 10 ₂ Folded part for concave groove 10 ₃ Front edge 10 ₄ Guide piece 11 Slide groove 12 Concave groove

Claims (1)

(57) [Claims] 1. A cartridge containing a medium inside a case having an opening into which a recording / reproducing head and a drive shaft can be inserted, and slidably provided with a shutter for opening and closing the opening. A sliding guide 10 having a substantially U-shaped cross section is provided at positions protruding from both side ends, respectively.
Sliding guide is intended one end side of the 10 bent portion 10 ₂ which is inserted into concave groove 12 formed with the outer edge to the case exterior
And then, characterized in that inner edge is formed as a guide piece 10 ₄ was bent projecting in a direction entering from the case side surface in the interior between the upper and lower cases, which flared tip edge 10 ₃ of the guide piece 10 ₄ outwardly And cartridge.