JPH0726958U - Head feed mechanism of magnetic recording / reproducing device - Google Patents

Abstract

(57) [Abstract] [Purpose] To obtain a head feeding mechanism of a magnetic recording / reproducing apparatus which has a small number of parts and can simplify the assembly process. [Structure] A "0" side magnetic head 15 is mounted on the surface of the tip portion and is sent in the length direction of a slot 2a of a magnetic disk holder 2 in which a magnetic disk is loaded by a guide means 4 provided in an apparatus frame 3. "The side carriage 1 and the" 1 "side magnetic head 16 are mounted on the surface facing the" 0 "side magnetic head 15 and the same"
The base portion 9a is flexibly supported by the base portion 1a of the 0 "side carriage 1, and the driven ear 9b provided in the middle portion is driven by the biasing spring 12 to follow the opening edge 2b of the slot 2a" 1. In the head feeding mechanism of the magnetic recording / reproducing apparatus including the “side carriage 9”, the support pin 22 facing the direction perpendicular to the guide means 4 is provided on the back surface of the “0” side carriage 1 which is resin-molded as a rigid member.
Is integrally formed, and the coil pin 12a of the biasing spring 12 is supported on the support pin 22 of the magnetic recording / reproducing apparatus.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a magnetic recording / reproducing apparatus using a magnetic disk as a recording medium, and particularly to a head feeding mechanism of the magnetic recording / reproducing apparatus.

[0002]

[Prior art]

 As is well known, in a magnetic recording / reproducing apparatus using a so-called "3.5 inch" floppy disk as a recording medium, a head feeding mechanism as shown in FIGS. 4 to 6 is used. Reference numeral "1A" is a "0" side carriage guided along a guide rod 4A of an apparatus frame 3A extending in a direction parallel to the slot 2a of the magnetic disk holder 2A. This "0" side carriage 1A is It is molded as a rigid member by pressing a thin metal plate into a shallow dish.

A flexible leaf spring 6 is cantileverly fixed to the base portion 1a of the "0" side carriage 1A via a spacer 5 by a mounting bracket 7A and a fixing screw 8A. The base end 9a of the "1" side carriage 9A, which is also pressed from a thin metal plate as a rigid member, is supported by the mounting screw 10 at the free end 6a of the "1" side carriage 9A. The driven ear 9b thus brought into contact with the opening edge 2b of the slot 2a of the magnetic disk holder 2A. Further, a support rod 11 is fixed to the mounting ear 7a of the mounting bracket 7A, and a biasing spring 12A for pressing the "1" side carriage 9A to the supporting rod 11 in the direction of the opening edge 2b of the magnetic disk holder 2A. Is installed.

On the surfaces of the "0" side carriage 1A and the "1" side carriage 9A near the tips, the "0" side magnetic head 15A and the "0" side magnetic head 15A are provided via gimbals 13A and 14A made of a flexible thin metal plate. The "1" side magnetic heads 16A are fixed, and the "0" side magnetic heads 15A and the "1" side magnetic heads 16A record / reproduce information on the surface of a magnetic disk (not shown).

Further, a feed motor 17A is installed on the surface of the apparatus frame 3A adjacent to the "0" side carriage 1A, and a feed screw 18A of the feed motor 17A extending in a direction parallel to the guide rod 4A is provided. The parallel pin 21 fixed to the extension portion 1b of the "0" side carriage 1A using the holding plate 19 and the screw 20 is engaged, and the "0" side carriage 1A and the "0" side carriage 1A are rotated by the rotational movement of the feed screw 18A. The "1" side carriage 9A is sent in the radial direction of the magnetic disk.

[0006]

[Problems to be solved by the device]

 Since the biasing spring 12A of the head feeding mechanism in the conventional magnetic recording / reproducing apparatus is fixed to the support rod 11 fixed to the mounting ear 7a of the mounting bracket 7A as described above, the supporting rod 11 is mounted separately from the mounting bracket 7A. Since the support rod 11 must be preassembled on the mounting bracket 7A prior to assembly, the number of parts is large and the assembly process becomes complicated. There was a limit. SUMMARY OF THE INVENTION An object of the present invention is to obtain a head feeding mechanism for a magnetic recording / reproducing apparatus which has a small number of parts and can simplify the assembly process in view of the problems of the conventional head feeding mechanism described above.

[0007]

[Means for Solving the Problems]

 In order to achieve this object, the present invention mounts a "0" side magnetic head on the surface of the tip and feeds the magnetic disk in the longitudinal direction of a slot of a magnetic disk holder loaded by a guide means provided in the apparatus frame. A "0" side carriage, a "1" side magnetic head mounted on the surface facing the "0" side magnetic head, and a base portion flexibly supported by the base portion of the "0" side carriage. In a head feeding mechanism of a magnetic recording / reproducing apparatus including a "1" side carriage that is driven by an urging force of an urging spring in a direction of an opening edge of the slot, a "0" side carriage formed as a rigid member on the back surface of the "0" side carriage. , A magnetic recording device in which a support pin oriented in a direction perpendicular to the guide means is integrally molded, and the coil portion of the biasing spring is supported by the support pin. It proposes a head feed mechanism of the reproducing apparatus.

[0008]

【Example】

 Hereinafter, the details of the embodiment of the present invention will be described with reference to FIGS. The resin-molded "0" side carriage 1 having a pedestal-shaped base integrally molded has a driven portion 1c at the lower portion of the middle portion thereof, and the driven portion 1c extends in a direction parallel to the slot 2a of the magnetic disk holder 2. It is guided along the guide rod 4 of the extended device frame 3.

On the back surface of the base portion 1 a of the “0” side carriage 1, a support pin 22 capable of supporting an urging spring 12, which will be described in detail later, is integrally formed. Since the support pin 22 extends in a direction parallel to the guide rod 4, the coil spring 12a of the biasing spring 12 is simply inserted from the tip of the support pin 22 to move the biasing spring 12 to the "0" side carrier. It can be fixed to the base 1a of the bag 1. In addition, a thin-walled portion 1d is formed in the center of the tip portion of the "0" side carriage 1 to have flexibility by sufficiently reducing the wall thickness, and the "0" seated on the surface of the thin-walled portion 1d. The connection pin 15a of the side magnetic head 15 is fixed to the flexible printed circuit board 23 with solder while sandwiching the thin portion 1d.

The base portion 1a of the "0" side carriage 1 is fixed to the mounting bracket 7 and the base portion 9a of the "1" side carriage 9 which is pressed from a thin metal plate as a rigid member, as in the conventional case. It is fixed directly with screws 8. That is, this "1" side carriage 9 is made as a rigid member by bending the peripheral wall 9c of the intermediate portion and the tip end portion into a "L" -shaped cross section, and the embossed portion 9d is formed on the tip end surface. Then, the "1" side magnetic head 16 is attached to the embossed portion 9d via the gimbal 14. Further, a pair of driven ears 9b are cut and raised on the peripheral wall 9c of the intermediate portion of the "1" side carriage 9, and these driven ears 9b are brought into contact with the opening edge 2b of the slot 2a of the magnetic disk holder 2. It

Referring to FIG. 3, the mounting relationship between the “0” side carriage 1 and the “1” side carriage 9 will be described. The peripheral wall 9 c described above is not formed on the base portion 9 a of the “1” side carriage 9. Since the through hole 24 into which the screw portion of the fixing screw 8 can be inserted is bored on the surface, the base portion of the "1" side carriage 9 is provided between the base portion 1a of the "0" side carriage 1 and the mounting bracket 7. With the 9a interposed, the base portion 9a of the "1" side carriage 9 can be firmly fixed to the base portion 1a of the "0" side carriage 1 by tightening the fixing screw 8.

In addition, a "U" -shaped cutout 25 is formed in the portion 9e of the "1" side carriage 9 near the base portion, and the cross-section coefficient of the portion 9e near the base portion is different by the cutout 25. Is smaller than the part. Therefore, since the portion 9e near the base has sufficient flexibility, a state in which the tip of the "1" side carriage 9 is flexibly supported by the base of the "0" side carriage 1 is obtained. .

Although the fixed end 12b of the biasing spring 12 whose coil portion 12a is supported by the support pin 22 is locked to the back surface of the base portion 1a, the biasing end 12c of the biasing spring 12 is As shown in FIG. 2, since the surface of the "1" side carriage 9 is pressed, the force of the biasing spring 12 causes the driven ear 9b of the "1" side carriage 9 to follow the opening edge 2b of the magnetic disk holder 2. Will be done.

Further, a feed motor 17 is installed on the surface of the apparatus frame 3 adjacent to the “0” side carriage 1, and a feed screw 18 of the feed motor 17 extending in a direction parallel to the guide rod 4 is provided. The driven protrusion 26 of the extension portion 1b integrally formed with the side portion of the "0" side carriage 1 is engaged therewith, and therefore, the rotational movement of the feed screw 18 causes the "0" side carriage 1 and "1". "The side carriage 9 is fed in the radial direction of the magnetic disk.

Since the head feeding mechanism according to the illustrated embodiment has the above-described structure, the opening / closing mechanism attached to the magnetic disk holder 2 when the floppy disk (not shown) is inserted into the magnetic disk holder 2. Although the shutter of the floppy disk is released by this, when the floppy disk is completely loaded in the magnetic disk holder 2, the magnetic disk holder 2 is lowered downward in FIG. Therefore, as the magnetic disk holder 2 descends, the "1" side carriage 9 falls toward the magnetic disk holder 2 due to the force of the biasing spring 12, and the "0" side carriage 1 and the "1" side carriage 9 are moved. The supported "0" side magnetic head 15 and "1" side magnetic head 16 are elastically contacted with both surfaces of the magnetic disk, and the feed motor 17 is activated to record / reproduce information on / from the surface of the magnetic disk. .

Further, in the same head feeding mechanism, by simply fixing the base portion 9a of the "1" side carriage 9 to the base portion 1a of the "0" side carriage 1 by using the fixing screw 8 and the mounting bracket 7, "0" is obtained. Since the assembly between the side carriage 1 and the "1" side carriage 9 can be completed, a simple structure of the assembly process with a reduced number of parts can be obtained.

The urging spring 12 is provided on the surface of the “1” side carriage 9 which is fixed to the “0” side carriage 1 in advance by fitting the coil portion 12 a to the support pin 22 integrally formed with the “0” side carriage 1. Assembling is performed by simply applying the urging end portion 12c of the urging spring 12, so that the assembling process is simple and the structure is inexpensive.

[0018]

[Effect of device]

 As is apparent from the above description, according to the present invention, the support pin capable of supporting the coil portion of the biasing spring is integrally formed on the back surface of the resin-molded "0" side carriage, so that the number of parts is reduced. Not only can the number be reduced, but after the "0" side carriage and the "1" side carriage are assembled, the urging spring can be supported by the support pins, which is a simplified assembly process.

[Brief description of drawings]

FIG. 1 is a perspective view of a head feeding mechanism according to the present invention with a magnetic disk holder removed.

FIG. 2 is a sectional view taken along line 2-2 of FIG.

FIG. 3 is an exploded perspective view showing a relationship between a “0” side carriage and a “1” side carriage of the head feeding mechanism.

FIG. 4 is a perspective view of a conventional head feeding mechanism with a magnetic disk holder removed.

5 is a sectional view taken along line 5-5 of FIG.

FIG. 6 is an exploded perspective view showing a relationship between a “0” side carriage and a “1” side carriage of the head feeding mechanism.

[Explanation of symbols]

 1 "0" Side Carriage 2 Magnetic Disk Holder 2a Slot 2b Opening Edge 8 Fixing Screw 9 "1" Side Carriage 9a Base 9b Driven Ear 12 Energizing Spring 12a Coil 15 "0" Side Magnetic Head 16 "1" Side Magnetic Head 22 Support pin

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hisagi Komatsu Teruichi, Tendo City, Yamagata Prefecture 1-1, Neutronics Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. A "0" side carriage in which a "0" side magnetic head is mounted on the surface of the tip portion and is fed in the length direction of a slot of a magnetic disk holder in which a magnetic disk is loaded by a guide means provided in an apparatus frame. The "1" side magnetic head is mounted on the surface facing the "0" side magnetic head, the base portion is flexibly supported by the base portion of the "0" side carriage, and the urging spring urges the base portion. "1" driven by the opening edge direction of the slot
In the head feeding mechanism of the magnetic recording / reproducing apparatus including the side carriage, the "0" formed as a rigid member.
A head of a magnetic recording / reproducing apparatus characterized in that a support pin oriented in a direction perpendicular to the guide means is integrally formed on the back surface of the side carriage, and the coil portion of the biasing spring is supported by the support pin. Feeding mechanism.