JP2596205Y2 - 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 cartridge having a shutter such as 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. Conventionally, this type of information medium is susceptible to dust and dirt during handling, and is particularly susceptible to damage. It is known to provide a shutter for opening and closing the unit.

[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 slide groove and is provided. Is inserted into the slide groove from the end of the slide guide. However, since the slide guide end is straight, the tip of the slide guide member abuts the guide groove bottom of the case when the shutter is tilted, increasing the frictional resistance. There was a problem that the opening and closing operation could not be performed smoothly and the case was scraped. The present invention is intended to eliminate these conventional disadvantages, and the leading end of the sliding guide of the shutter may be caught on the case,
The slidability of the shutter can be improved and the operation can be performed smoothly without shaving the case.
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 through which a recording / reproducing head and a drive shaft can be inserted, and a shutter for opening and closing the opening is slidably slidable. In the cartridge provided, a plate-like sliding guide member that fits into and slides in the guide groove provided on the side surface of the case projects from the inner surface of the side wall of the shutter,
A bent piece inserted into the concave groove formed on the surface of the lower case is provided on a lead portion protruding from an end of the shutter in the sliding direction, and a front end of the sliding guide member is moved forward and backward with respect to the sliding direction. A cartridge having an arc-shaped chamfered portion at both outer side corners of the cartridge.

[0005]

When opening and closing the opening 3 by sliding the shutter 4 fitted in the case 1, even if the shutter 4 is tilted, the corners on both ends of the sliding guide member 5 are chamfered. Even if it touches the guide groove bottom, the shutter 4
The movement of the shutter 4 is smooth, and the case 4 is not abraded, and the shutter 4 is locked by the bent piece 8 and the sliding guide member 5 so as to sandwich the case 1, so that the reliability is remarkably enhanced. Used.

[0006]

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 formed. A cartridge having a case 1 slidably provided with a shutter 4 having a substantially U-shaped cross section for opening and closing the opening 3, wherein the case 1 comprises an upper case and a lower case. A guide groove 11 is provided on a side surface of the case where the shutter 4 slides.
1 is inserted into the shutter 4
A pair of projections are provided on the inner surface of the side wall in parallel with the shutter plate,
The bent piece 8 inserted into the concave groove formed on the surface of the lower case is connected to the lead portion 7 protruding from the end of the shutter 4 in the sliding direction.
At the tip of the sliding guide member 5, the arc-shaped chamfered portions 6 are formed at both outer corners on the front and rear sides with respect to the sliding direction.
6 as a cartridge.

The sliding guide member 5 is fitted in a guide groove 11 provided in the middle of the thickness direction of the case 1, that is, at the joint surface position of the upper and lower cases.
A pair of plate-like pieces provided at intervals in front and rear positions in the shutter sliding direction are formed integrally with a resin shutter, and are formed as bent pieces with a metal shutter. Also, the shutter 4
The lead portions 7, 7 protruding from both ends in the sliding direction are provided with bent pieces 8, 8 to be fitted into concave grooves (not shown) of the lower case. , 8 are arranged opposite to the case, and are fitted and supported so as to sandwich the case 1 together with the guide member 5 from both upper and lower surfaces.

In the drawing, reference numeral 9 denotes a shutter lock engaging piece, and reference numeral 10 denotes a shutter slide area for sliding the shutter 4 having a U-shaped cross section. The concave surface is formed on the outer surface of the case. Reference numeral 12 denotes a clamping plate, 13 denotes a shaft hole, 14 denotes an erasure prevention plug, 15 denotes a shutter lock, 16 denotes a medium storage unit, and 17 denotes a label area. 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.

The shutter 4 is a synthetic resin shutter, and a chamfered portion or a concave portion formed on the case side at the base of a plate-shaped sliding guide member 5 protruding from the case side into the interior. Although it is considered to provide a reinforcing portion that corresponds to or fits into the shutter and to increase the strength of the shutter and improve the reliability, the same consideration should be given to a metal shutter.

[0010]

According to the present invention, a medium is accommodated in a case having an opening through which a recording / reproducing head and a drive shaft can be inserted, and a shutter having a substantially U-shaped cross section for opening and closing the opening is slid. In the freely provided cartridge, a guide groove is provided on the side surface of the case, and a pair of plate-like sliding guide members that fit into the guide groove are protruded in parallel with the shutter plate on the inner surface of the side wall of the shutter. A bent piece to be inserted into the concave groove formed on the surface is provided on a lead portion protruding from the end in the sliding direction of the shutter. With the arcuate chamfers at the corners on both sides, even when the shutter is tilted when the shutter is installed in the case and slides, the tip of the sliding guide member contacts the bottom of the guide groove of the case. Even the shutter The opening and closing operation can be performed safely without causing shutter operation failure, and there are few cases of case damage such as rubbing or shaving of the case when opening and closing the shutter, and the generation of shavings, so dropout etc. There is a practical effect that reliability can be remarkably increased without interfering with recording / reproduction, quality and durability can be improved, and manufacturing is easy and inexpensive.

[Brief description of the drawings]

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

FIG. 2 is a rear view of the example of FIG. 1;

FIG. 3 is a partially cutaway perspective view of the shutter in the example of FIG.

FIG. 4 is an exploded perspective view of the embodiment of the present invention in use.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Case 2 Disc-shaped medium 3 Opening 4 Shutter 5 Sliding guide member 6 Chamfer part 7 Lead part 8 Folding piece 10 Shutter area 11 Guide groove

Claims (1)

(57) [Scope of request for utility model registration] 1. A shutter (1) for storing a medium (2) in a case (1) having an opening (3) into which a recording / reproducing head, a drive shaft and the like can be inserted, and opening and closing the opening (3). in the cartridge with 4) slidably, said
Slide into the guide groove (11) provided on the side of the case
Then, the flat sliding guide member (5) is moved to the shutter (4).
And projecting from the inner surface of the side wall of the lower case
Slide the bent piece (8) inserted into the concave groove into the slide of the shutter (4).
The lead portion (7) projecting from the end in the moving direction
At the tip of the sliding guide member (5),
A cartridge having an arc-shaped chamfered portion (6) at both outer side end corners before and after the cartridge.