JPS59178646A - Miniature floppy disc device - Google Patents

Abstract

PURPOSE:To improve the assemblability and the reliability of the device and reduce the cost by forming an attaching part of an attaching plate in a device body into a U-shaped spigot and providing plastic disc guides in the left and the right on the side of the floppy disc insertion face of the attaching plate. CONSTITUTION:A device body 1 consisting of an aluminium chassis is provided with a U-shaped spigot 16, and an attaching plate 3 is inserted there and is attached with screws. By this constitution, positioning in the (x) direction is determined between the U-shaped spigot and the rise of the attaching plate 3, and positioning in the (y) direction is determined by matching a width 3l of a disc guide 3b of the attaching plate 3 to the length of the spigot in the (y) direction of the device body 1, and thus, automatic positioning is performed. The plastic disc guide 3b into which the attaching plate 3 is inserted is attached to a guide part 3a constituted with the device body 1 and the attaching plate 3, and a floppy disc is set amoothly. Thus, the assemblability and the reliability of the device are improved, and the cost is reduced.

Description

Detailed Description of the Invention [Field of Application of the Invention] The present invention relates to a 5-inch, ultra-slim (thickness: 41.3yo+) floppy disk drive used as an external storage device terminal for computers, etc. It is related to the so-called mini-floppy disk device, which has a small number of parts and is low cost.
This invention relates to the structure of a highly productive disk guide section.

[Prior art]

The conventional structure of the disc guide part is to construct a disc guide part between the main bodies by installing a separate piece of plastic as a disc guide between the main body and the mounting plate, or by cutting and bending the mounting plate itself. It was something to do. The drawbacks will be explained below using a conventional example.

A conventional example is shown in FIGS. 7 and 8. The figure shows floppy disk 4
FIG.

FIG. 7 shows a structure in which a guide section is directly formed between the main body 1 and the mounting plate 3. According to this structure, a floppy disk 4
However, the guide surfaces 3a and 3a are easily damaged, have a high coefficient of friction, and have the disadvantage that the force required to attach and detach the floppy disk 4 is large. In order to ensure the dimensional accuracy of the guide surface 1a of the main body 1 and to reduce the coefficient of friction, machining was performed, which was also expensive. Furthermore, the shape of the mounting plate requires extrusion or drawing, which is difficult in terms of cost and dimensional accuracy.

FIG. 8 shows a method of inserting a separate piece 9 into the guide portion of the floppy disk 4. According to this method, ease of assembly is poor, the number of parts increases, and the cost also increases. Furthermore, since the separate piece 9 is mostly made of plastic, there is a fear that it may deform due to changes in temperature and humidity, making it difficult to attach and detach the floppy disk 4.

[Object of the Invention] The object of the present invention is to have good assemblability, a small number of parts, and
To provide a highly reliable mini-floppy disk device with smooth loading and unloading of floppy disks.

[Summary of the invention]

In order to give the mounting plate multi-functionality, the mounting plate is made of a molded product with plastic outserts on a steel plate, reducing the need for welding and screwing separate pieces, thereby increasing reliability. A plastic disk guide is installed on the bottom surface of the mounting plate (floppy disk insertion slot) to facilitate the insertion and removal of floppy disks, reduce the number of parts, and automatically position the disk during assembly. did.

[Embodiments of the invention]

Hereinafter, embodiments of the present invention will be explained with reference to Figures 1, 2, 3, 4, 5, and 6.

FIG. 4 is a perspective view of the mounting plate 3 according to the present invention, which has a multi-functional structure in which plastic is outsert onto a steel plate and many parts can be attached.

The component mounting boss 3C on the mounting plate 3 has a structure in which a plastic thin film 3d is provided at the bottom of the pilot hole so that the facets during tapping do not scatter onto the device.

This thin film 3d can be easily constructed because the mounting plate 3 is a plastic molded product.

Also, risers 3e are provided on both sides of the mounting plate 3 to increase the strength of the beam itself, and a disk guide 3b for guiding the floppy disk 4 in and out is outsert on the lower surface of the mounting plate 3.

Further, a pad 10 can be attached to the lower surface of the mounting plate 3 in order to improve the contact of the floppy disk 4 with the head 6. According to the present invention, the pad 10 can be mounted at any position on the lower surface of the mounting plate 3, so it can be set at a position where the best helad touch can be obtained.

FIG. 2 shows a side view of the mini-floppy disk device.

FIG. 3 is a longitudinal sectional view.

FIG. 5 is a bottom view of the mounting plate 3, and FIG. 6 is a perspective view of the disk guide portion of the embodiment of the present invention.

A dogleg-shaped spigot 1b shown in FIG. 2 is provided on an aluminum chassis that spans the main body of the mini-floppy disk device, a mounting plate 3 is inserted, and the mounting plate 3 is mounted to the aluminum chassis with screws 11.

According to this configuration, positioning in the X direction is determined between the U-shaped spigot 1b of the main body 1 and the rising p3e of the mounting plate 3, and the X direction is determined by the width of the disc guide 3b of the mounting plate 3. 3t to the X-direction spigot of the main body 1, and is automatically positioned by placing the mounting plate 3 on the main body 1.

With this configuration, the mounting plate is automatically positioned and the disk guide section is configured at the same time, greatly increasing productivity.

Further, by attaching the mounting plate 3 to the main body 1, the mounting plate 3 acts as a strength member in the X direction, and the strength as a whole can be improved. Floppy disk drives are high-precision devices measuring microns, so one of their important characteristics is strength so that they do not deform under some load.

Further, with this configuration, the floppy disk 4 can be smoothly inserted and removed without being damaged, and the number of parts can be reduced. That is, as shown in FIG.
A disk guide 3b that is outsert to the mounting plate 3 is attached to the guide portion 3a, which is composed of the mounting plate 3 and the mounting plate 3.

According to this configuration, the floppy disk 4 can be mounted smoothly without being damaged. Since the disk guide 3b is made of plastic, the coefficient of friction is small, and the floppy disk 4
can move smoothly. However, due to the friction coefficient, the guide surface 1a of the main body 1 can be made uncut, thereby reducing costs.

In addition, this structure allows the disk guide mechanism to be made simple, and has a great effect in making the floppy disk device thinner.

〔Effect of the invention〕

According to the present invention, it is possible to provide a mini-floppy disk device that is easy to assemble, has high reliability, low cost, and high strength.

[Brief explanation of drawings]

Fig. 1 is a plan view of the main body, Fig. 2 is a side view of the main body, Fig. 3 is a vertical sectional view of the main body, Fig. 4 is a perspective view of the mounting plate, Fig. 5 is a bottom view of the mounting plate, and Fig. 6 is a bottom view of the mounting plate. Figure 7. FIG. 8 is a perspective view of the disc guide section. DESCRIPTION OF SYMBOLS 1... Main body, 2... Drive motor, 3... Mounting plate, 4... Floppy disk, 5... Board, 6...
... Head, 7... Head loading mechanism, 8... Stepping motor, 9... Separate piece (disk guide)
, 1o...pad, coffin S mouth JP-A-59478G46 (5) 3 i-to/t-kaisho-ichi

Claims (1)

[Claims] 1. Main structural parts (1) and this main body (1)
A drive motor (2) is provided on the bottom side and serves as a drive source for the floppy disk (4); a mounting plate (3) made of a steel plate with plastic outsert provided on the top side of the main body (1); A substrate (5) provided above, a head mechanism (6) provided on the top side of the main body (1), and a head provided on the top side of the main body (1) adjacent to the head mechanism (6). Load mechanism (7) and the head mechanism (6)
A mini-floppy disk device including a stepping motor (8) that is provided adjacent to the main body (
The mounting part (16) of the mounting plate (3) in 1) is a U-shaped spigot, and the top surface (1) of the main body (1) is
The floppy disk insertion surface (3a) of the mounting plate (3), which together with a) constitutes the storage space for the floppy disk (4)
Insert the disc guide (3) on the side, matching the width of the insertion slot C).
b) are provided on the left and right sides, and the disk guide (3b) is provided by outsert plastic on the mounting plate (3).