JPS6326475B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetic recording device.

A conventional example is shown in FIG. 1 is the base. Although not shown in the drawings, the base 1 is used to connect and hold a spindle and a head support for holding a magnetic head while being connected to a motor. A magnetic recording medium 3 housed in a jacket 2 is placed on a diskette base 4, covered with a cover 5, and driven by a spindle, thereby writing or reading data. The cover 5 and diskette base 4 must be connected to each other and connected to the base 1 so as to be vertically movable. This is for loading or unloading the magnetic recording medium.
The mounting structure is as follows: First, the support plate 6 is attached to the base 1 with screws 7, and the pins 8 fixed to the support plate 6 are fitted into the hinge holes 9 formed on both rear sides of the diskette base 4. Claws 10 formed on both rear sides of the cover 5 are engaged with recesses 11 formed on both rear sides of the cover 5, and finally the diskette base 4 and the cover 5 are connected by screws 12, one from each side.

However, since the support plate 6 is formed separately from the base 1, the number of parts increases and the number of assembly points also increases. The pin 8 must also be prevented from coming off, and the direction and position of the support plate 6 must be adjusted by loosening the screw 7, which has the drawback of increasing the number of assembly steps.

The present invention has been made in view of these points, and it is an object of the present invention to provide a magnetic recording device in which a base, a diskette base, and a cover can be assembled very easily with a small number of parts.

This invention requires only the work of integrally bending support pieces having hinge holes on both sides of the rear of the base, and inserting flanged pins from the outside into the hinge holes of these support pieces and the hinge hole of the diskette base. The diskette base is rotatably supported by the diskette base, and the flanged pin is not fixed in any way but is prevented from coming off by the inner surface of the cover.The diskette base and cover are assembled by engaging the engaging portions formed on both with each other. Therefore, the diskette base and cover can be connected with a minimum number of screws, and therefore, the number of parts and assembly points are reduced, and assembly work can be easily performed with a low number of man-hours. It is.

An embodiment of the present invention will be explained based on FIGS. 2 to 6. Components that are the same as those described in FIG. 1 will be described using the same reference numerals. 1
is a base, a spindle 14 connected to a motor 13 is supported on this base 1, a media holder 15 that applies rotational force to the magnetic recording medium 3 is fixed to this spindle 15, and a pinion is attached to this media holder 15. 16 are integrally formed. Furthermore, a magnetic head 7 is mounted on the top surface of the base 1.
A head support 18 holding the head is rotatably attached while being biased in the return direction by a spring 19. Furthermore, a plurality of gears 20, 21, 22, 23, 24, 25, and 26 are provided on the upper surface of the base 1 to transmit the rotation of the motor 13 to the head support 18 at a reduced speed through the pinion 16. ing. The final gear 26 of these gear groups meshes with a gear 27 formed integrally with the head support 18, and rotates once to rotate the head support 1.
8 in one reciprocating motion. Further, a head load arm 2 is provided on the upper surface of the head support 18.
8 is attached so as to be able to move up and down while being biased downward.

Support pieces 29 are integrally bent on both rear sides of the base 1, and hinge holes 31 and 32 are formed in these support pieces 29 and the side plates 30 of the diskette base 4. 31,
A flange pin 34 having a flange 33 is inserted through the flange 32 . A link 35 is attached to one front side of the upper surface of the base 1 so as to be movable up and down, and a pin 36 erected at one end of the link 35 is inserted into a long hole 37 formed in the side plate 30 of the diskette base 4. There is. Further, a spring 40 is tensioned between a spring hanging pin 38 erected at the intermediate portion of the link 35 and a spring hanging piece 39 fixed to the base 1. Furthermore, a lift arm 41 is formed on the diskette base 4 to raise the head load arm 28 upward when it rotates upward, and screw holes 4 are formed on both sides of the diskette base 4.
2 is formed, and claws 43 which are engaging parts are formed on both rear sides.
is formed. Furthermore, the cover 5 includes:
Recessed portions 44 which are engaging portions located on both rear sides, mounting holes 45 located on both front sides, and the flanged pin 3
A recess 46 for housing the collar 33 of No. 4 is formed, and a pressing surface 47 facing the collar 33 of the flanged pin 34 is formed on one surface of these recesses 46. The width of these recesses 46 is set to be larger than the diameter of the collar 33. Therefore, it is possible to move the cover 5 rearward with respect to the diskette base 4 when the claw 43 and the recess 44 are engaged. The diskette base 4 and cover 5 are connected by inserting the screw 12 through the mounting hole 45 and screwing it into the screw hole 42.

In such a configuration, writing or reading data is performed by driving the motor 13 to rotate the magnetic recording medium 3 and rotating the head support 18 in the radial direction of the magnetic recording medium 3. To load and unload the magnetic recording medium 3, the diskette base 4 and cover 5 are rotated upward about the flanged pin 34 as a fulcrum. In this case, link 3
5 rotates to support the diskette base 4,
The spring 40 is deflected upward beyond the dead point, which is the center of rotation of the link 35, and
and urges the diskette base 4 upward. When the diskette base 4 is closed, the spring 4
0 forces the diskette base 4 and link 35 downward beyond the dead point.

In this way, the support piece 29 for attaching the diskette base 4 is integrally formed with the base 1, and although the flange pin 34 is not fixed in any way, it can be removed to bring the flange 33 to face the pressing surface 47 of the cover 5. Also, diskette base 4 and cover 5
Since the rear part is connected by the engagement between the claw 43 and the recess 44, the front part can be connected by the two screws 12. Therefore, the number of parts and assembly locations can be reduced.

In addition, a pressing surface 47 that prevents the flanged pin 34 from coming off.
are formed at the bottom of the recess 46, but the left and right width of the cover 5 may be slightly increased and the entire inner surfaces of both sides of the cover 5 may be used as pressing surfaces.

As described above, this invention includes integrally bending supporting pieces on both sides of the rear of the base, inserting flanged pins into these supporting pieces and the sides of the diskette base, and fixing these flanged pins. By preventing the cover from falling off on both inner surfaces of the cover, it is possible to reduce the number of parts and assembly points when installing the diskette base. By engaging the parts with each other, the parts can be connected with a minimum number of screws, and therefore, the assembly work can be easily performed with a reduced number of man-hours.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing a conventional assembly structure, Fig. 2 is an enlarged side view showing an embodiment of the present invention, with the base, diskette base, and cover cut away to show the internal structure; Fig. 3 is an enlarged plan view showing the arrangement of parts on the base, Fig. 4 is an exploded perspective view showing the assembly structure of the base, diskette base, and cover, Fig. 5 is a longitudinal sectional front view, and Fig. 6
The figure is a horizontal sectional view. 1...Base, 2...Magnetic recording media, 4...
...Diskette base, 5...Cover, 13...
Motor, 14... Spindle, 17... Magnetic head, 18... Head support, 29... Support piece, 3
1 to 32...hinge hole, 33...flange, 34...flange pin, 43...claw (engaging portion), 44...recess (engaging portion), 47...pressing surface.

Claims (1)

[Claims] 1. A base that holds a head support holding a magnetic head and a spindle while being connected to a motor, a diskette base on which a magnetic recording medium that receives rotational force from the spindle is placed, and a cover that covers the magnetic recording medium. and supporting pieces are integrally bent and formed on both rear sides of the base,
forming hinge holes into which flanged pins are inserted in these support pieces and on both rear sides of the diskette base;
A presser surface is formed on both rear inner sides of the cover to be joined to the flanges of the flanged pin, and an engaging portion is formed to removably engage the diskette base and the cover. A magnetic recording device characterized in that the diskette base and the cover are screwed together while being maintained in an engaged state.