JP2944933B2 - 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 such as a magnetic disk, an optical disk or a magneto-optical disk is used as a cartridge housed in a case, which is set in a recording / reproducing apparatus. 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 in a sliding groove, so that a base of the sliding guide is provided. However, when the shutter is opened and closed by contacting the end of the case opposite thereto, there are problems such as the sliding of the shutter, the case being scraped, and the movement of the shutter not being smooth. And there was a problem in assemblability. The present invention is intended to eliminate these conventional drawbacks, so that the shutter does not get caught on the case, the sliding property is improved without shaving the case, the operation can be performed smoothly, and the malfunction is reduced. Without increasing safety, improving reliability and improving ease of assembly into the case,
It is intended 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. A cartridge is provided with a sliding guide having a substantially U-shaped cross section bent at positions protruding from both side ends of the shutter. The inner edge is formed as a guide piece bent and protruded from the side surface of the case into the interior between the upper and lower cases, and the guide piece is formed on the side surface of the case. A slide groove for inserting a guide is provided in the case so that the slide guide is inserted into the case from the portion, and the guide piece of the slide guide is formed at the edge of the slide groove facing the bent base portion of the slide guide. All sliding It is provided with a chamfered portion or recess over circumference.

[0005]

When the shutter slides by being inserted into the slide groove of the slide guide case, there is a chamfered portion or recess at the edge of the slide groove opposed to the root of the slide guide. The sliding movement does not come into contact with the base of the sliding guide, and the movement of the shutter is smooth. In addition, the sliding guides are provided at positions protruding from both ends of the shutter, so that the movement of the shutter is smooth. ,
The reliability can be significantly improved without occurrence of a case scraping phenomenon.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the disk cartridge shown in FIGS. 1 to 4. A disk medium 2 of an information medium is accommodated in a case 1 and an opening 3 such as a head insertion hole is formed. A cartridge having a shutter 4 having a substantially U-shaped cross section for opening and closing the opening 3 slidably provided in the case 1, wherein the case 1 comprises an upper case and a lower case. Sliding guides 10, 10 having a substantially U-shaped cross section are provided at positions protruding from both side ends of the shutter 4, and each sliding guide 10 is inserted between the upper and lower cases from the side surface of the case 1. guiding the slide groove 11 is provided on the case 1 for inserting said at edge sliding guide 10 of the slide groove 11 facing the bent root portion 10 ₁ of the sliding guide 10 in
Guide pieces 10 ₄ is provided with a chamfered portion 13 or the recess 13 ₁ over the entire range of sliding.

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 tip of the bending guide is fitted. The sliding guide 10 on one side of the shutter 4 has a U-shaped cross section. guide piece bent portion 10 ₂ which is inserted into concave groove 12 formed in the lower case outer surface and the inner edge is located from the case side of the distal edge 10 ₃ by bending in a direction into the interior between the upper and lower cases are 10 ₄ projected and the guide piece 10 ₄ slide groove 1
The upper case and the lower case forming the upper case 1 are guided in contact with the upper surface of the protrusion of the lower case. The leading edge 10 ₃ of the guide piece 10 ₄ are flared outwardly. The shutter 4 having a U-shaped cross section is fitted and supported so as to sandwich the case 1 from both upper and lower surfaces.

[0008] In Figure 4A, although the edge chamfer 13 of the slide groove 11 facing the bent root portion 10 ₁ sliding guide for one end side the shutter 4 is formed on the curved surface, which May be an inclined surface. In addition, as shown in FIG.
It may be a recess 13 ₁ in place.

In the embodiment of FIG. 5, 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 the shutter 4 has a single shutter plate. bending Ori opposed thereto consists of a contact piece, the sliding guide 10 is concave groove the folding unit 10 _2, the guide piece 10
₄ and a and flared leading edge 10 ₃ are constituted.

In the drawing, reference numeral 5 denotes a shutter area for sliding a 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. 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.

[0011]

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 bent and provided at positions protruding from both side ends of the shutter, and one of the sliding guides on one side has a recess formed with an outer edge formed on the outer surface of the lower case. The bent portion is inserted into the groove, and the inner edge is formed as a guide piece bent and protruded from the side surface of the case into the direction between the upper and lower cases. To be inserted into
A slide groove for inserting the guide is provided in the case, and at the edge of the slide groove opposed to the bent root portion of the slide guide, a chamfered portion or an entire range in which the guide piece of the slide guide slides. By providing the recess,
The bent portion of the sliding guide of the shutter does not come into contact with the corner of the case, and the sliding guide having a U-shaped cross section is provided on both sides of the shutter. Opening and closing operation can be performed safely without failure, and even if a metal shutter is used, there is little occurrence of case damage and shavings such as rubbing or shaving against the case when opening and closing the shutter. Reliability can be significantly improved, quality and durability can be improved, and there are practical effects such as good assemblability, easy manufacture and low cost.

[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. 1, wherein A is an example of a chamfered part and B is an example of a concave part.

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

[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 13 Chamfer part 13 ₁ recess

Claims (2)

(57) [Claims] 1. A medium (2) is accommodated in a case (1) having an opening into which a recording / reproducing head and a drive shaft can be inserted, and a shutter (4) for opening and closing the opening (3) slides. A freely slidable cartridge, wherein a sliding guide (10) having a substantially U-shaped cross section is bent and provided at positions protruding from both side ends of the shutter (4), and one of the sliding guides (10) is provided. The bent portion (10 ₂ ) of the side end side is inserted into the concave groove (12) having the outer edge formed on the outer surface of the case.
And then, inner edge than the side surface portions of the folded projecting the guide piece in the direction to enter from the case side surface in the interior between the upper and lower cases (10 ₄₎ is formed as, and the guide piece (10 ₄₎ is the case (1) A slide groove (11) for inserting a guide is provided in the case so as to be inserted into the case, and an end of the slide groove (11) facing the bent root portion (10 ₁ ) of the slide guide (10). At the edge , the sliding guide (1
0) over the entire range in which the guide piece (10 ₄ ) slides.
A chamfered portion (13) or a concave portion (13 ₁ ) . Wherein said slide groove (11) is, there is interposed deployed on the bonding surface of the upper and lower cases, the guide piece 10 of the shutter <br/> sliding guide motor (4) (10) Expansion of ₄
Cartridge according to claim 1, characterized in that with a gap for fitting the open front end edge (10 _3).