JP2592372Y2 - Head feed mechanism of magnetic recording / reproducing device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic recording / reproducing apparatus using a magnetic disk as a recording medium, and more particularly to a head feed mechanism of the magnetic recording / reproducing apparatus.

[0002]

2. Description of the Related 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 feed mechanism as shown in FIGS. 5 and 6 is used. The symbol “1A” indicates the magnetic disk holder 2
The "0" side carriage 1A is a "0" side carriage guided along a guide rod 4A of the apparatus frame 3A extending in a direction parallel to the slot 2a of the "A".
Is formed as a rigid member by pressing a thin metal plate into a shallow dish shape.

The "0" side carriage 1A
A flexible leaf spring 6 is cantilevered to a base 1a via a spacer 5 by a mounting bracket 7A and a fixing screw 8A, and a free end 6a of the leaf spring 6 is also thin metal. The base 9a of the "1" side carriage 9A, which is pressed from the plate as a rigid member, is supported by mounting screws 10. 2a is brought into contact with the opening edge 2b. A support rod 11 is fixed to the mounting ear 7a of the mounting bracket 7A, and the supporting rod 11 is biased to press the driven ear 9b of the "1" side carriage 9A against the opening edge 2b of the magnetic disk holder 2A. The spring 12A is mounted.

The "0" side carriage 1A and "0"
The "0" side magnetic head 15A and the "1" side magnetic head 16A are fixed to the surface near the tip of the 1 "side carriage 9A via gimbals 13A and 14A made of a flexible thin metal plate. "0"
Side magnetic head 15A and "1" side magnetic head 1
By 6A, information is recorded / reproduced on the surface of a magnetic disk (not shown).

Further, the "0" side carriage 1A
The feed motor 17 is provided on the surface of the device frame 3A adjacent to the
A is installed, and a feed screw 18A of the feed motor 17A extending in a direction parallel to the guide rod 4A is fixed to an extension 1b of the "0" side carriage 1A by using a holding plate 19 and a screw 20. The parallel pin 21 is engaged, and the rotation of the feed screw 18A causes the “0”
Side carriage 1A and "1" side carriage 9A
Is sent in the radial direction of the magnetic disk.

[0006]

Therefore, the carriage portion of the head feed mechanism in the conventional magnetic recording / reproducing apparatus supports the "0" side magnetic head 15A and the "1" side magnetic head 16A, so that the gimbals 13A and 13A are provided.
In addition to A, a “0” side carriage 1A, a “1” side carriage 9A, a spacer 5, a leaf spring 6, a mounting bracket 7A, a fixing screw 8A, and a mounting screw 10 are respectively formed as separate parts. Become. For this reason, the conventional head feed mechanism has a large number of parts, complicates these assembling steps, and has its own limit in reducing the manufacturing cost. An object of the present invention is to provide a head feeding mechanism of a magnetic recording / reproducing apparatus which has a small number of parts, has a simple structure, and can simplify an assembling process in view of the problems of the conventional head feeding mechanism as described above. .

[0007]

In order to achieve this object, the present invention provides a magnetic disk in which a "0" side magnetic head is mounted on a front end surface and a magnetic disk is loaded by guide means provided on an apparatus frame. A "0" side carriage fed in the length direction of the slot of the holder, and a "1" side magnetic head mounted on the surface facing the "0" side magnetic head and having a base at the base of the "0" side carriage. In a head feed mechanism of a magnetic recording / reproducing apparatus having a "1" side carriage which is flexibly supported and has a driven ear provided at an intermediate portion driven by an opening edge of the slot, "0" side carriage and "" extending in the direction perpendicular to the connecting piece
The 1 "side carriage is formed by bending, and bent edges for maintaining surface rigidity are formed around the" 0 "side carriage and the" 1 "side carriage, respectively, on the side near the base of the" 0 "side carriage. An extension part to be a driven part is integrally formed, and a flexible part which is provided with flexibility by being cut out is formed in a portion near the base of the “1” side carriage, and the “0” side carriage and the “1” side carriage are formed. The present invention proposes a head feed mechanism of a magnetic recording / reproducing apparatus in which a gimbal mounting portion for mounting the gimbal for the “0” side magnetic head and the “1” side magnetic head is formed on the front end surface of the 1 ”side carriage. .

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an embodiment of the present invention; FIG. 1 and 2 show a head feeding mechanism of the magnetic recording / reproducing apparatus according to the present invention. The carriage of the head feeding mechanism is manufactured by bending a single metal plate. That is, the carriage portion is connected to the connecting piece 2
2 has a "0" side carriage 1 bent at a right angle and has a base 1a connected to the connecting piece 22. The "0" side carriage 1 is parallel to the slot 2a of the magnetic disk holder 2. It is guided along the guide rod 4 of the device frame 3 extended in various directions. The "0" side carriage 1 has its entire surface rigidity maintained by a bent edge 1c which is bent at a right angle from the periphery thereof, but has an extension 1b, which will be described in detail later, on one side of its base 1a.
Is formed, and a gimbal 13 is provided on the surface near the tip.
The mounting window 24 which can fix this is formed.

The upper side of the connecting piece 22 is extended substantially parallel to the "0" side carriage 1.
Although the 1 "side carriage 9 is integrally formed by bending, a pair of rigidities bent toward the base 1a of the" 0 "side carriage 1 are provided on both sides of the base 9a of the" 1 "side carriage 9. The retaining piece 23 is formed.
Although not shown, these rigidity maintaining pieces 23 are fixed to the surface of the base 1a of the "0" side carriage 1 and the connecting piece 22 by means such as soldering. 0 "side carriage 1
And the rigidity between the base 1a of the side carriage 9 and the base 9a of the "1" side carriage 9 is maintained. A cutout 25 is punched out on the surface of the base 9 a of the “1” side carriage 9, and flexible portions 9 d that give flexibility to the “1” side carriage 9 are formed on the left and right sides of the cutout 25. . Further, in order to maintain the surface rigidity of the entire “1” side carriage 9, a bent edge 9 e is bent at a right angle on the side near the tip of the “1” side carriage 9. A pair of driven ears 9b protruding in the horizontal direction are bent at the middle part, and these driven ears 9b are brought into contact with the opening edge 2b of the slot 2a of the magnetic disk holder 2.

A bead portion 9c protruding upward is formed on the surface near the tip of the "1" side carriage 9, and the peripheral portion of the gimbal 14 is fixed to the bead portion 9c. That is, the “0” side carriage 11
On the surface near the tip of the "1" side carriage 99, gimbals 13, 14 made of a flexible thin metal plate are provided.
The "0" side magnetic head 15 and the "1" side magnetic head 16 are respectively fixed via the magnetic head, and the "0" side magnetic head 15 and the "1" side magnetic head 16 are used to fix the surface of a magnetic disk (not shown). Information is recorded
Will be played.

As in the prior art, a feed motor 17 is provided on the surface of the apparatus frame 3 adjacent to the "0" side carriage 11 and extends in a direction parallel to the guide rod 4. Although a feed screw 18 is provided, a parallel pin 21 is fixed to an extension 1b of the "0" side carriage 11 using a holding plate 19 and a screw 20, and the "0" is rotated by the rotation of the feed screw 18. The side carriage 1 and the "1" side carriage 9 are fed in the radial direction of the magnetic disk.

FIGS. 3 to 5 show the steps of manufacturing the above-mentioned "0" side carriage 1 and "1" side carriage 9, and FIG. 3 shows the bending of the "0" side carriage 1 and "1" side carriage 9. FIG. 3 shows a plan view of a carriage blank X. That is, the carriage blank X is stamped from a single metal plate, and the base of the "0" side carriage 1 is provided on both sides of the connecting piece 22 formed in an elongated rectangular shape through bending lines a and b. 1a and "1"
The base 9a of the side carriage 9 is in a continuous state.

That is, a bent edge 1c is formed on the outer peripheral edge of the "0" side carriage 1, and an extension 1b is connected to one side of the base 1a of the "0" side carriage 1. On both sides of the base 9a of the "1" side carriage 9, a pair of rigidity maintaining pieces 23 which can be folded at right angles from the bending lines c and d are continuous, and are closer to the front end of the "1" side carriage 9. A bent edge 9e for maintaining the surface rigidity of the "1" side carriage 9 is connected to the outer periphery of the.

As shown in FIG. 4, a mounting window 24 on which the gimbal 13 can be fixed in a subsequent punching step is provided on the surface of the carriage blank X on the surface of the "0" side carriage 1 by a flexible portion 9d. The incision 25 that forms
It is formed on the surface of the base 9a of the 1 "side carriage 9 respectively.

Further, in the manufacturing process of the carriage blank X, the bent edges 1c and 9e are formed on the periphery of the "0" side carriage 1 and the "1" side carriage 9 toward the lower side of the sheet of FIG. Are bent at right angles, a pair of driven ears 9b are bent on both sides of the bent edge 9e in a direction parallel to the surface of the "1" side carriage 9, and a pair of driven ears 9b are formed on the upper side of FIG. , The rigidity maintaining piece 23 is folded up at a right angle. Accordingly, the carriage blank X bent in this manner folds the “0” side carriage 1 and the “1” side carriage 9 at right angles to the connecting piece 22 along the folding lines a and b,
The rigidity maintaining piece 23 is fixed to the “0” side carriage 1 and the connecting piece 22 with solder or the like, thereby completing the carriage.

Since the head feed mechanism according to the illustrated embodiment has the above structure, the conventional spacer 5, leaf spring 6, mounting bracket 7A, fixing screw 8A, mounting screw 10 are used.
Can be abolished. That is, between the base 1a of the “0” side carriage 1 and the base 9a of the “1” side carriage 9,
The rigidity is maintained by the connecting piece 22 and the rigidity maintaining piece 23,
The surface rigidity of the “0” side carriage 1 and the “1” side carriage 9 is maintained by the bent edges 1c and 9e, respectively. Since a flexible portion 9d having flexibility is formed in a portion near the base of the "1" side carriage 9, the driven ear 9b of the "1" side carriage 9 is formed.
Can be driven by the opening edge 2b of the slot 2a of the magnetic disk holder 2.

In the above embodiment, the gimbal 1
In order to mount the bead portion 4, the bead portion 9c is formed on the "1" side carriage 9 as an example.
May be a mounting window similar to the mounting window 24.

[0018]

As is clear from the above description, according to the present invention, the conventional spacer, leaf spring, mounting bracket,
Since the carriage part of the head feed mechanism can be manufactured from one carriage blank by eliminating the fixing screws and mounting screws, the number of parts is reduced, and the assembly process is simplified, providing a head feed mechanism that is inexpensive to manufacture. it can.

[Brief description of the drawings]

FIG. 1 is a perspective view of a head feed mechanism according to the present invention.

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

FIG. 3 is a plan view of a carriage blank used in the head feed mechanism.

FIG. 4 is a plan view of the carriage blank after punching.

FIG. 5 is a plan view of the carriage blank after bending.

FIG. 6 is a perspective view of a conventional head feed mechanism.

FIG. 7 is a sectional view taken along the line 7-7 in FIG. 6;

[Explanation of symbols]

 1 "0" side carriage 1a base 1b extension 1c bending edge 9 "1" side carriage 9a base 9b extension 9c bead 9d flexible portion 9e bending edge 13, 14 gimbal 15 "0" side magnetic head 16 " 1 "side magnetic head 22 Connecting piece 23 Rigidity maintaining piece 24 Mounting window 25 Cut-out X Carriage blank

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁶ , DB name) G11B 17/32 G11B 17/04 G11B 21/00

Claims (1)

(57) [Scope of request for utility model registration] 1. A "0" side carriage which has a "0" side magnetic head mounted on the front end surface thereof and is fed in a length direction of a slot of a magnetic disk holder in which a magnetic disk is loaded by guide means provided on an apparatus frame. And a driven ear provided with a "1" side magnetic head mounted on the surface facing the "0" side magnetic head and having a base flexibly supported by a base of the "0" side carriage and provided at an intermediate portion. In a head feed mechanism of a magnetic recording / reproducing apparatus having a "1" side carriage driven by an opening edge of the slot, a "0" side extending in a direction perpendicular to the opposite side of the connecting piece from the connecting piece. Carriage and "
The 1 "side carriage is formed by bending, and bent edges for maintaining surface rigidity are formed around the" 0 "side carriage and the" 1 "side carriage, respectively, on the side near the base of the" 0 "side carriage. An extension part to be a driven part is integrally formed, and a flexible part which is provided with flexibility by being cut out is formed in a portion near the base of the “1” side carriage, and the “0” side carriage and the “1” side carriage are formed. A head feed mechanism for a magnetic recording / reproducing apparatus, wherein a gimbal mounting portion for mounting the gimbal for the "0" side magnetic head and the "1" side magnetic head is formed on the front end surface of the 1 "side carriage.