JPH0441493Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention relates to a slide fitting guide mechanism for a floppy disk drive device in which a slide fitting for floppy disk loading is slidably attached to a base. .

[Conventional technology]

A slide fitting guide mechanism of a conventional floppy disk drive device will be explained with reference to FIGS. 2 and 3.

In Fig. 2, reference numeral 1 denotes a base made of die-cast aluminum, on which a slide fitting 2 made by punching and bending a metal plate can slide in order to load a floppy disk (not shown). installed on.
Then, the slide fitting 2 advances from the position shown in Fig. 2 to bring the floppy disk into the loading state, and the slide fitting 2 is locked with a latch (not shown), and this latch is removed and the slide fitting 2 is unloaded with a spring (not shown). It is retreating back to the dinging state. In such a floppy disk drive device, the guide mechanism for linearly reciprocating the slide fitting 2 is located at several locations (four locations in the one shown in FIG. 2) on the base 1, as shown in detail in FIG. A press-fit hole 3 is provided in the thick part of the press-fit hole 3, and the surrounding part 4 of the press-fit hole 3 is thick, and the surrounding part 6 of the elongated hole 5 provided in the slide fitting 2 is placed above the press-fit hole surrounding part 4. , is supported with synthetic resin washers 7 and 8 disposed below, and the head 10 of a metal pin 9 is slidably inserted into the elongated hole 5 via the upper washer 7, and loosely inserted into the lower washer 8. The lower surface of the head 10 is brought into contact with the press-fitting hole surrounding part 4, and the cylindrical press-fitting part 11 protruding downward from the head 10 is press-fitted into the press-fitting hole 3, and is split into the annular groove 12 of the head 10. Washiya 1
3, the slide fitting 2 is held between the split washer 13 and the press-fit hole surrounding area 4 via the upper and lower washers 7 and 8, and the head 10 of the pin 9 is
The slide fitting 2 is guided in the longitudinal direction of the elongated hole 5 by the slide fitting 2 so as to reciprocate in a straight line.

[Problem that the invention attempts to solve]

The slide fitting guide mechanism of the conventional floppy disk drive device configured as described above is as follows:
Upper and lower washers 7 and 8 and split washers 13 are required, which increases the number of parts and the number of assembly steps.Furthermore, since the base 1 is made of an aluminum die-cast product, it becomes heavy. .

The purpose of this invention is to solve the above-mentioned problems, reduce the number of parts and assembly man-hours, and provide a slide fitting guide mechanism that can reduce the weight of the base at a low cost.

[Means for solving problems]

This invention is based on the above-mentioned floppy disk drive device, in which the base is provided with a press-fit hole and a height-determining boss that protrudes upward from the bottom of the press-fit hole, and a synthetic resin washer is placed over the periphery of the press-fit hole. A cylindrical press-fitting part with a large-diameter head and a lower surface open, and small annular protrusions protruding from multiple locations in the axial direction on the outer periphery of this press-fitting part are integrated by supporting the surrounding part of the elongated hole provided in the slide fitting. The press-fitting part of the synthetic resin bushing formed in the above is slidably inserted into the elongated hole of the slide fitting, and then passed through the washer and press-fitted into the press-fitting hole of the base, and the press-fitting part is inserted into the upper end of the boss of the base. The bottoms are brought into contact with each other, and the slide fitting and washer are sandwiched between the large-diameter head of the bush and the area around the press-fit hole in the base.

[Effect]

This device is constructed as described above, and the slide fitting smoothly reciprocates with respect to the base due to the sliding contact between the slide fitting and the synthetic resin bushing. It is only necessary to insert a resin washer, and by omitting the conventional top washer and split washer, the number of parts and assembly man-hours can be reduced, and the cylindrical press-fitting part of the bushing is connected to the press-fitting hole circumferential wall of the base. It is held between the outer circumferential side and the inner circumferential side by the boss, and the small annular convex portion formed on the outer circumference of the press-fitting portion is elastically deformed so as to be crushed.
Even if the dimensional accuracy of the press-fit hole diameter is relatively low, the press-fit part can be firmly fixed to the base, and the contact between the top end of the boss of the base and the top bottom of the press-fit part allows the head of the bush and the area around the press-fit hole of the base to can be secured at specified intervals,
By optimizing the clamping force of the slide fitting and washer between the head and the surrounding area of the press-fit hole,
The base can be made of synthetic resin molding, and the bushings are also made of synthetic resin, compared to conventional bases that are die-cast aluminum products.
It can be made lightweight.

〔Example〕

An embodiment of this invention will be described below with reference to FIG.

In FIG. 1, reference numeral 1 denotes a base made of a synthetic resin molded product, and a raised boss 14 is provided on the bottom side of the center of the press-fit hole 3 of the base 1 to protrude higher than the thick-walled press-fit hole surrounding area 4. has been done. 2 is a sliding metal fitting, and the sliding metal fitting 2 is connected to a portion 6 around the long hole 5.
is supported on the press-fit hole surrounding portion 4 via a washer 8 made of synthetic resin. Reference numeral 15 denotes a bush made of a molded product of synthetic resin, and the bush 15 includes a large-diameter head 16, a cylindrical press-fitting part 17 whose lower surface is open, and annular protrusions protruding from a plurality of locations in the axial direction on the outer periphery of this press-fitting part 17. 18 are integrally formed. The press-fitting portion 17 of the bush 15 is slidably inserted into the elongated hole 5 of the slide fitting 2, inserted through the washer 8, press-fitted into the press-fit hole 3 of the base 1, and press-fitted onto the boss 14 of the base 1. The height of the head 16 of the bush 15 is determined by the upper base 19 of the press-fitting part 17 coming into contact with the end surface. moreover,
A slide fitting 2 and a washer 8 are held between the head 16 of the bush 15 and the press-fit hole surrounding portion 4 of the base 1. A plurality of bushing holes 20 facing the press-fitting portion 17 of the boss 14 are formed at the bottom side of the press-fitting hole 3 of the base 1 . Note that the bush 15 and the washer 8 are made of metal such as nylon or zyuracon, and a resin material with good slippage. Further, the configuration of this embodiment other than the above-mentioned is as follows.
This is similar to the conventional one shown in FIGS. 2 and 3.

The slide fitting guide mechanism of the embodiment configured as described above includes the cylindrical press-fit portion 17 of the synthetic resin bush 15, the side wall of the elongated hole 5 of the slide fitting 2, and the lower surface of the head 16 of the bush 15 and the elongated hole 5. The slide fitting 2 is guided to linearly reciprocate in the longitudinal direction of the elongated hole 5 while being in sliding contact with the upper surface of the surrounding portion 6.

In addition, when some parts are worn out, an appropriate tool can be inserted through the bushing removal hole 20, the cylindrical press-fitting part 17 of the bushing 15 can be pushed, and the press-fitting part 17 can be pulled out from the press-fitting hole 3. , the slide fitting guide mechanism will be disassembled and worn parts will be replaced.

[Effect of idea]

As explained above, according to this invention, the base is provided with a press-fit hole and a height-determining boss that protrudes upward from the bottom of the press-fit hole, and the slide A cylindrical press-fitting part with a large diameter head and an open bottom surface is supported by the surrounding part of a long hole provided in the metal fitting, and small annular protrusions protruding from multiple locations in the axial direction on the outer periphery of this press-fitting part are integrally formed. The press-fitting part of the synthetic resin bushing is slidably inserted into the elongated hole of the slide metal fitting, and is passed through the washer and press-fitted into the press-fitting hole of the base, so that the upper bottom of the press-fitting part is brought into contact with the upper end of the boss of the base. let me touch you,
Since the slide fitting and washer are sandwiched between the large-diameter head of the bushing and the area around the press-fit hole in the base, the slide fitting smoothly reciprocates against the base due to the sliding contact between the synthetic resin and metal of the bushing and slide fitting. By doing so, the number of parts and assembly man-hours can be reduced by omitting the upper washer and split washer that were conventionally used, and the cylindrical press-fitting part of the bushing is clamped between the press-fitting hole circumferential wall of the base and the boss. By elastically deforming the small annular convex portion formed on the outer periphery of the press-fitting part, the press-fitting part can be firmly fixed to the base even if the dimensional accuracy of the press-fitting hole diameter is relatively low, and the press-fitting can also be made with the upper end of the boss of the base. Due to the contact with the upper bottom of the bushing, the head of the bushing and the area around the press-fit hole of the base can be maintained at a predetermined distance, and the clamping force of the slide fitting and the washer can be made appropriate between the head and the area around the press-fit hole. The base can be made from a synthetic resin molded product instead of a conventional die-cast product, and the slide metal guide mechanism and the floppy disk drive device can therefore be provided in a lightweight and inexpensive manner.

[Brief explanation of the drawing]

FIG. 1 is a vertical sectional view showing a main part of an embodiment of this invention, FIG. 2 is a schematic perspective view of a conventional example, and FIG. 3 is an enlarged sectional view taken along the line - in FIG. 1... Base, 2... Slide metal fitting, 3... Press fit hole, 4... Press fit hole surrounding area, 5... Long hole, 6...
Portion around long hole, 8...Synthetic resin washer, 14...
...Boss, 15...Butsuyu, 16...Large diameter head,
17... Cylindrical press-fitting part, 18... Annular small convex part, 19
...Top bottom, 20... Hole for removing the button.

Claims (1)

[Scope of utility model registration request] In a floppy disk drive device in which a slide fitting for loading a floppy disk is slidably attached to a base, the base is provided with a press-fit hole and a height determining boss protruding upward from the bottom of the press-fit hole, The surrounding part of the elongated hole provided in the slide fitting is supported on the surrounding part of the press-fit hole through a synthetic resin washer, and a cylindrical press-fit part with a large diameter head and a lower surface open, and an axial direction of the outer periphery of this press-fit part are formed. The press-fitting portion of the synthetic resin bushing, which is integrally formed with small annular protrusions protruding from a plurality of locations, is slidably inserted into the elongated hole of the slide fitting, and then passed through the washer and press-fitted into the press-fitting hole of the base. Fit it, and touch the top of the press-fit part to the top of the boss of the base.
A slide fitting guide mechanism for a floppy disk drive device, characterized in that a slide fitting and a washer are sandwiched between the large-diameter head of the bush and the area around the press-fit hole in the base.