JPH0330179A - Floppy disk device - Google Patents

Abstract

PURPOSE:To improve the performance of work by engaging a slide plate formed with a lock opening comprising a circular part and a square part with a base plate formed with a projection specifying the shape. CONSTITUTION:A slide plate 2 formed with a lock opening 3 comprising a circular part 3 and a square part 32 is engaged with a projection 6 whose lower width is narrower than the width of the square part 32 having an engagement 61 whose width is wider than the width of the square part 32 able to be inserted in the circular part 31 provided on a base plate 1 are provided and they are engaged with the projection 6. In the case of loading, the slide plate 2 is skided in the pate direction and after the projection 6 is inserted in the circular part 31 of the lock opening 3 and the slide plate 2 is slid to lock the engagement 61 of the projection 6 to the side ridge of the square part 32 of the lock opening 3. Thus, the entire device cost is reduced, the performance of work and the reliability are improved.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention relates to a floppy disk device in which a slide plate formed with a lock-shaped opening consisting of a circular part and a square part is supported by a pressed base plate. Regarding. ? BACKGROUND ART FIG. 11 is a schematic front view of the main parts of a conventional floppy disk device, and FIG. 12 is a sectional view taken along the line A--A in FIG. 11.

This floppy disk device has an eject button 2 at one D'lH, and engaging pieces 23, 2. are formed, each circular ffll3■
4. ．． 51, square parts 3■, 42.5■, and a press-made slide plate 2 in which three lock-shaped openings 3.4.5 are formed, and a head carriage housing accommodated in a frame (not shown). It includes a base plate 18 in which a square opening 182, a circular opening 18 for a spindle motor, and three through holes 19 are formed.

Then, this slide plate 2 is attached to the base plate 18.
When mounting on the base plate 18, first insert an expensive guide post 20 made by lathe processing or plastic processing such as forging into each d through hole 19, and swage the guide post 20 into the base plate 18.
After the guide posts 20 are fixed, hold the eject button 21 with your hand and move the slide plate 2.
f #2-shaped opening 3.4.5 circular part 3, . 4,
, 5 , and then move the slide plate 2 slightly in the direction of arrow B.

[Problems to be Solved by the Invention] The conventional floppy disk device described above is fixed to the slide plate or the head plate by an expensive guide post made by lathe processing or plastic processing such as forging, and which is separate from the base plate. Because it is
The cost of the entire device is high, and when the slide plate is attached to the head plate, the guide post must be caulked, which is time-consuming.

[Means for Solving the Problems] The present invention provides a floppy disk device in which a slide plate in which an Sλ-shaped opening consisting of a circular portion and a rectangular portion is formed is supported by a pressed base plate, wherein the base plate is A protrusion extending upwardly of the base plate is formed by pressing, and the protrusion has a
It has an engaging part that can be inserted into the circular part and has a width larger than the width of the square part, and the width of the lower part is smaller than the width of the square part.

[Function] Protrusions are formed on the base plate produced by press working, following the above press working, and when attaching the slide plate to the base plate, the slide plate is slid in the plate direction. After inserting the projection into the circular portion of the lock-shaped opening, the slide plate is further slid to lock the engaging portion of the projection to the side edge of the square portion of the lock-shaped opening.

[Example] Next, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of the main parts of the first embodiment of the floppy disk device of the present invention, FIG. 2 is a front view after removing the cassette case 9 from FIG. 1, and FIG. C
-C@ sectional view, and FIG. 4 is a front view of the main part in FIGS. 1 and 2.

? The floppy disk device has an eject button 2l at -, 4, and both sides are bent vertically to form engagement pieces 2z, 24, which have circular parts 3, 4, respectively.
4,. 5,. Slide plate 2 formed with three lock-shaped openings 3, 4.5 consisting of square parts 32, 42.52.
, a rectangular opening 1 for a head carriage accommodated in a frame (not shown), a circular opening 1l for a spindle motor, and each through hole 19 of the conventional base plate 18 in FIGS. 11 and 12. There are protrusions 6 and 7 on the part.
．． 8 is formed, and has pins 91 and 92 on one side and two pins (not shown) on the other side, and accommodates a floppy disk cassette (not shown). The cassette case 9 includes bins 9■, 92.The two bins each have engaging pieces 2s,
It is supported by 24 people.

The three protrusions 6, 7.8 mentioned above can be inserted into the circular part 31 as shown in FIGS. 3 and 4, taking the protrusion 6 as an example, and have a width of The engaging portion 61 having a width larger than ? It has a substantially U-shape in which the width of the lower part 62 is slightly smaller than the width of the square part 32,
As shown in FIG. 5, the protrusions 6 are formed during or after the pressing process for manufacturing the base plate 1. First, cutting is performed along the dashed line 0, and then the protrusions 6 are sequentially cut at one point. Dashed line 1 1 . , 1 1 ■. 113
It is made by performing a bending process.

When attaching the slide plate 2 to the base plate 1, hold the eject button 2 with your hand and insert the protrusions 6.7 into the circular parts 31.4, , 5 of the lock-shaped opening 3.4.5. After inserting the engaging portions 6 , 7 , 8 , of the protrusions 6 , 7 , 8 , slide the slide plate 2 as shown in FIG. ,,8
, square part 3 of lock-shaped opening 3, 4.5, 42.52
Attach it to the side edge of the

6 is a sectional view of a main part of a second embodiment of the present invention, FIG. 7 is a front view of a main part of this embodiment, and FIG. 8 is a perspective view of a main part of a pace plate 12 in this embodiment.

In this example, cutting and bending once? Three inversely convex plate-shaped protrusions 14 having an engaging portion 141 at the upper part are formed on the base plate 12 by pressing the engaging portion 14 . is slide plate 2
can be inserted into the circular part 31 of the lock-shaped opening 3, and the square part 32
The width of the lower part 142 is slightly smaller than that of the rectangular part 3.

FIG. 9 is a front view of a main part of a third embodiment of the present invention, and FIG. 10 is a perspective view of a main part of a base plate 15 in this embodiment.

In this embodiment, three horizontal L-shaped plate-shaped protrusions l7 having an engaging portion 171 at the upper part are formed on the base plate 15 by cutting and one-time bending press processing. The joint part 171 can be inserted into the circular part 31 of the lock-shaped opening 3 of the slide plate 2, and the square part 3
, and the width of the lower part 17 is slightly smaller than the width of the rectangular part 32.

[Effects of the Invention] As explained above, the present invention provides a method for forming protrusions that can be anchored in the 32-shaped opening of the slide plate in a base plate produced by press working, by a press process that is a series of the press processes described above. This eliminates the need for an expensive guide post, which is a separate part from the base plate as in the past, and reduces the cost of the entire device.Furthermore, there is no need to swage the guide post onto the base plate, improving workability and reliability. Seven.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the main parts of the first embodiment of the floppy disk device of the present invention, FIG. 2 is a front view after removing the cassette case 9 from FIG. 1, and FIG. C
-C line sectional view, FIG. 4 is a front view of main parts in FIGS. 1 and 2, FIG. 5 is a diagram for explaining the method of forming the protrusion 6, and FIG. 6 is a second embodiment of the present invention. Main part sectional view of example, 7th
The figure is a front view of the main part of this embodiment, FIG. 8 is a perspective view of the main part of the base plate 12 in this embodiment, FIG. 9 is a front view of the main part of the third embodiment of the present invention, and FIG. A perspective view of essential parts of the base plate 15 in the embodiment, ? 11 is a schematic front view of the main parts of a conventional floppy disk device, and FIG. 12 is a sectional view taken along the line A--A in FIG. 11. 1,12.15...Base plate, 11...Circular opening, l2...Square opening, 2...Slide plate, 2,...Eject button, 23,2. ...Engagement piece, 3,4.5...Lock-shaped opening, 3■4. ,5,--Circular part, 32,42.52--Square part, 6,7,8,1 4.1 7--Protrusion, 6■71,8
■14. ．． 17. ...Engagement part, 6■,1 42,1
72...lower part, 9...cassette case, 9■9■...pin, 10...broken line, 1 1 +. 1 12.1 13 - One point 3n line. Figure 3 Figure 4 Figure 5 Funeral 6 Figure Raku 7 Figure Hanging 8 Figure 9 Figure 10

Claims (1)

[Scope of Claims] 1. A floppy disk device in which a slide plate in which a lock-shaped opening consisting of a circular part and a square part is formed is supported by a pressed base plate, wherein the base plate is formed by pressing. a protrusion extending upwardly is formed, the protrusion having an upper part;
A floppy disk device, characterized in that it has an engaging part that can be inserted into the circular part and has a width larger than the width of the square part, and a lower part has a width smaller than the width of the square part.