JPH0533362U - Micro floppy disk - Google Patents

Abstract

(57) [Abstract] [Purpose] To improve the reliability of the dust-proof shutter for micro floppy disks and prevent data destruction due to intrusion of dust or dirt. [Structure] A circular thin flexible disk having a magnetic material applied on at least one side, a rectangular resin case for protecting the disk, and a dustproof shutter for opening and closing an opening formed in a part of the protective case. It is a micro floppy disk equipped with and. Locking means are provided associated with the dustproof shutter to releasably lock it in the closed position.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a 3.5 inch or 2.5 inch micro floppy disk.

[0002]

[Prior Art]

 Conventionally, an opening for writing / reading information is formed in a case for protecting a flexible disk, and a dustproof shutter is provided in association with the opening. The dust-proof shutter is held in the closed position (the position that covers the opening) by the force of the spring, but there is no special locking mechanism, so the shutter can be easily opened. As a result, dust or dirt may enter the protective case and destroy the data recorded on the disc.

[0003]

[Problems to be solved by the device]

 This is to improve the reliability of the dustproof shutter and prevent dust or dirt from entering the protective case.

[0004]

[Means for Solving the Problems]

 A circular thin flexible disk coated with magnetic material on at least one side and a rectangular resin case for protecting the disk are provided, and an opening is formed in a part of the case. In a micro-floppy disk provided with a dustproof shutter for opening and closing, a locking means is provided in relation to the dustproof shutter for releasably locking it in the closed position.

[0005]

[Action]

 When the micro floppy disk is not used, the dustproof shutter is locked in the closed position by the locking means to prevent dust and dirt from entering.

[0006]

【Example】

 An embodiment of a micro floppy disk according to the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is an enlarged view of a main part of a micro floppy disk according to the present invention. 1 is a metal dustproof shutter, 2 is a leaf spring, and 3 is a resin protective case. The dust-proof shutter 1 is attached to the upper portion of the rectangular protective case 3 and is closed by the force of a built-in spring (not shown) to close the opening (formed at the position shown in FIG. 1 and formed in the protective case 3). It is held in a covering position). The leaf spring 2 is provided in the upper right portion of the micro-floppy disk as a portion that does not hinder the driving of a circular disk (not shown) coated with a magnetic material.

FIG. 2 is an enlarged perspective view of the leaf spring 2 that acts as a locking means. Reference numeral 21 is a hook portion, and 22 is a protrusion. As understood from FIGS. 3 and 4, the hook portion 21 is set to have a height slightly lower than that of the protrusion 22. For example, in the case of a 3.5-inch micro floppy disk, the leaf spring 2 is suitable to have a maximum length of 4 mm and a width of 15 mm in consideration of its size. The protrusions 22 are formed by punching by pressing, but a height of about 1 mm is required, and therefore a process of adhering a separately manufactured member is performed in some cases. The protrusion 22 has a hemispherical rounded shape so that it is not caught when it is inserted into the slot of the drive unit. When a micro floppy disk is inserted as will be described later, the leaf spring is inserted along with the insertion. 2 is elastically deformed downward.

FIG. 3 is a sectional view taken along line A-A ′ in FIG. The dustproof shutter 1 has a hole 4 and the protective case 3 has a hole 5. The hook portion 21 of the leaf spring 2 is caught in the hole 4 of the dustproof shutter 1 to prevent the dustproof shutter 1 from moving, and is securely held in the closed position (the position also shown in FIGS. 3 and 4). When the hook portion 21 is engaged with the hole 4, the protrusion 22 engages with the hole 6 formed in the protective case 3 and projects somewhat upward from the hole 6.

FIG. 4 is a sectional view showing a state in which the micro floppy disk in FIG. 3 is inserted into the slot of the floppy disk drive device. The protrusion 22 of the leaf spring 2 is pressed by the upper surface that defines the slot of the drive device, and the protrusion 22 is lowered due to the elastic deformation of the leaf spring 2, and its upper end surface is flush with the end surface of the protective case 3. ..

When the protrusion 22 descends downward as shown in FIG. 4, the hook portion 21 also descends downward, and the hook portion 21 hooked on the dustproof shutter 1 also descends to release the lock mechanism and release the dustproof shutter 1 Can be opened and closed freely. After that, the open mechanism (not shown) of the shutter 1 operates, the dustproof shutter 1 is moved in the opening direction, and the opening of the protective case 3 is opened. Thus, the magnetic head approaches the disk through the opening of the protective case 3, and writing / reading is performed on the disk.

On the other hand, when the micro floppy disk is pulled out from the slot of the driving device, the pressing by the upper surface of the slot is released and the projection 22 projects from the hole 5, and the hole of the dustproof shutter 1 positioned at the closed position by the operation of the spring. The hook portion 21 is hooked on 4, and the dustproof shutter 1 is locked in the closed position by the leaf spring 2.

Although one specific example of the micro-floppy disk according to the present invention has been described above, the present invention is not limited to this, and various changes and modifications can be freely made without departing from the spirit of the present invention.

[0014]

[Effect of the device]

 The micro floppy disk of the present invention is provided with a lock step in association with the dustproof shutter, so that the dustproof shutter can be securely locked in the closed position, and data destruction due to dust or dust entering the protective case. Can be prevented.

[Brief description of drawings]

FIG. 1 is an enlarged view of a main part of a micro floppy disk of the present invention.

FIG. 2 is an enlarged perspective view of a leaf spring.

FIG. 3 is a sectional view taken along the line A-A ′ in FIG.

FIG. 4 is a sectional view showing a state in which a micro floppy disk is inserted into a slot of a disk drive device.

[Explanation of symbols]

 1 Dust-proof shutter 2 Leaf spring 3 Protective case 4, 5, 6 hole 21 Hook 22 Protrusion

Claims (1)

[Scope of utility model registration request] 1. A circular thin flexible disk coated with a magnetic recording material on at least one side, and a rectangular resin case for protecting the disk, wherein an opening is formed in a part of the case. A micro-floppy disk which is formed and is provided with a dustproof shutter for opening and closing the opening, wherein a locking means for releasably locking the dustproof shutter at a closed position is provided in relation to the dustproof shutter. Micro floppy disk.