JP2598906Y2 - Gimbal structure of magnetic head - 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 gimbal structure of a head feed mechanism.

[0002]

2. Description of the Related Art As is well known, in a magnetic recording and reproducing apparatus using a so-called "3.5 inch" floppy disk as a recording medium, a head feed mechanism as shown in FIGS. 3 to 5 is used. Reference numeral "1" denotes an apparatus frame 3 extending in a direction parallel to the slot 2a of the magnetic disk holder 2.
The "0" side carriage 1 guided along the guide rod 4 is formed as a rigid member by pressing a thin metal plate into a shallow dish shape.

A flexible leaf spring 6 is provided on a base 1a of the "0" side carriage 1 via a spacer 5.
Is fixed by a mounting bracket 7 and a fixing screw 8 in a cantilever manner. A free end 6a of the leaf spring 6 is provided with a base 9a of a "1" side carriage 9 which is also pressed from a thin metal plate as a rigid member. Supported by mounting screws 10,
The driven ear 9b protruding from the intermediate portion of the "1" side carriage 9 is inserted into the slot 2a of the magnetic disk holder 2.
Abuts on the opening edge 2b. A support rod 11 is fixed to a mounting ear 7a of the mounting bracket 7, and a biasing force for pressing the driven ear 9b of the "1" side carriage 9 against the opening edge 2b of the magnetic disk holder 2 is attached to the support rod 11. A spring 12 is mounted.

The "0" side carriage 1 and "1"
The “0” side magnetic head 15 and the “1” side magnetic head 16 are fixed to the surface near the tip of the side carriage 9 via metal plate gimbals 13 and 14 which will be described in detail later. 0 "side magnetic head 1
Information is recorded / reproduced on the surface of a magnetic disk (not shown) by the 5 and “1” side magnetic heads 16.

Further, a feed motor 17 is provided 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 extension portion 1 of the “0” side carriage 1 using a holding plate 19 and a screw 20.
The "0" side carriage 1 and the "1" side carriage 9 are fed in the radial direction of the magnetic disk by the rotation of the feed screw 18 by the engagement of the parallel pin 21 fixed to "b".

The conventional gimbal 13 fixed to the "0" side carriage 1 has a rigid gimbal 13 for stabilizing the attitude of the "0" side magnetic head 15 fixed to the center of the surface, as shown in FIG. It is composed of a certain metal plate. In other words, in the state of recording / reproducing information on the magnetic disk, the magnetic disk is sandwiched between the “0” side magnetic head 15 and the “1” side magnetic head 16. Rotation surface is "0"
Since the contact surface of the side magnetic head 15 serves as a reference, the same applies.
The 0 "side magnetic head 15 must be stably supported by the rigid gimbal 13.

[0007]

However, a recent personal computer or the like on which a floppy disk device is mounted is desired to be thin in order to be portable, and accordingly, the "0" side is required. Magnetic head 15
In the height direction L1 tends to decrease.
Ferrite ring 1 used for 0 "side magnetic head 15
The corresponding thickness dimension L2 of the ferrite ring 15a also tends to decrease, and the mechanical strength of the ferrite ring 15a decreases. In other words, in a recent head feed mechanism, when a strong impact force is applied to the electronic device to be incorporated, the “0” side magnetic head 15 and the “1” side magnetic head 16 collide with each other to cause the “0” side magnetic head to collide. The magnetic head 15 was sometimes broken. An object of the present invention is to take into account the above-described problems of the conventional head feed mechanism, and to stably support the "0" side magnetic head, and furthermore, even if a large impact force is applied.
The purpose is to obtain a gimbal structure in which the 0 "side magnetic head is not easily broken.

[0008]

In order to achieve this object, the present invention provides a "0" side magnetic head which is mounted on the surface of the leading end via a rigid metal plate gimbal.
In the side carriage, a pair of linear slits parallel to both ends of the surface of the gimbal to which the “0” side magnetic head is fixed at the center of the surface ,
A pair of "L" -shaped slits, which are symmetrical with each other, are formed on the surface of the "0" side carriage at the tip end side of the "0" side carriage to absorb the impact force when a large impact force is applied to the "0" side magnetic head. The gimbal structure of the “0” side carriage is proposed.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of an embodiment of the present invention will be described below with reference to FIGS. FIG. 1 shows a gimbal 13A according to a first embodiment of the present invention used for a "0" side carriage, and this gimbal 13A is the same as the conventional one in that it is made of a rigid metal plate.

The first embodiment is characterized in that a pair of parallel linear slits 22L, 22 formed on both sides of a "0" side magnetic head 15A fixed to the center of the surface of the gimbal 13A.
At R That is, by forming these linear slits 22L and 22R on the gimbal 13A, a slight flexibility is given to the center of the surface of the gimbal 13A to which the "0" side magnetic head 15A is fixed. The gimbal 13A as a whole is hardly deformed only by the load on the “0” side magnetic head 15A in the recording / reproducing state.

Since the gimbal 13A according to the first embodiment has the above-described structure, the load on the "0" side magnetic head 15A when recording / reproducing information on a magnetic disk is very small. -At the time of reproduction, the gimbal 13A is hardly deformed. Therefore, in this normal load state, the “0” side magnetic head 15A is stably supported by the gimbal 13A, and the contact surface of the “0” side magnetic head 15A is stabilized.
Recording and reproduction can be performed. Further, when a large impact force is applied to the magnetic recording device from the outside, it temporarily becomes “0”.
There is a possibility that the side magnetic head 15A and the “1” side magnetic head may strongly collide with each other.
When acting on the side magnetic head 15A, the portion where the "0" side magnetic head 15A is fixed at the center of the surface of the gimbal 13A is elastically deformed due to the presence of the linear slits 22L and 22R. As a result, the impact force applied to the “0” side magnetic head 15A due to the deformation of the gimbal 13A is absorbed, and the “0” side magnetic head 15A is prevented from being broken.

FIG. 2 shows a gimbal 13B according to a second embodiment of the present invention, in which "0" is provided.
A pair of "L" -shaped slits 23L and 23R are formed on both sides of the side magnetic head 15B. That is, these "
The L-shaped slits 23L and 23R are formed on the leading end side of a "0" side carriage to which the peripheral portion of the gimbal 13B is fixed because of the "0" side magnetic head 15.
Since the impact force applied to B becomes a bending moment with respect to the “0” side carriage, it is more effective for the impact force to make the portion of the gimbal 13B corresponding to the leading end side of the “0” side carriage elastic. It depends.

Therefore, the gimbal 1 according to the second embodiment is provided.
According to the 3B structure, when a strong impact force is applied to the “0” side magnetic head 15B from the outside, the center of the surface of the gimbal 13B surrounded by the “L” -shaped slits 23L and 23R is deformed, Since the impact force on the “0” side magnetic head 15B is reduced, the “0” side magnetic head 15B
B can be prevented from being destroyed. Of course, the gimbal 13B hardly deforms at the time of recording / reproducing. Therefore, in this normal load state, the “0” side magnetic head 15B is stably supported by the gimbal 13B, and the contact surface of the “0” side magnetic head 15B is changed. It is needless to point out that recording and reproduction can be performed without abnormality because of stability.

[0014]

As is apparent from the above description, according to the present invention, a pair of linear slits or "
By simply forming an L-shaped slit, the "0" side magnetic head can be stably supported in a normal state, and the impact force applied to the "0" side magnetic head when a large impact force acts is reduced. This has the effect of preventing the "0" side magnetic head from being destroyed.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a gimbal according to a first embodiment of the present invention.

FIG. 2 is an overall perspective view of a gimbal according to a second embodiment of the present invention.

FIG. 3 is a perspective view of a main part of a conventional magnetic recording / reproducing apparatus.

FIG. 4 is a sectional view taken along line 4-4 in FIG. 3;

FIG. 5 is an overall perspective view of a gimbal used in the magnetic recording / reproducing apparatus.

[Explanation of symbols]

 1 "0" side carriage 13A, 13B Gimbal 15A, 15B "0" side magnetic head 22L, 22R Linear slit 23L, 23R "L" shaped slit

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G11B 17/32 G11B 5/49

Claims (1)

(57) [Scope of request for utility model registration] 1. A "0" side magnetic head is mounted on a surface of a distal end portion via a rigid metal plate gimbal.
In the side carriage, a pair of linear slits parallel to both ends of the surface of the gimbal to which the “0” side magnetic head is fixed at the center of the surface ,
A pair of "L" -shaped slits, which are symmetrical with each other, are formed on the surface of the "0" side carriage at the tip end side of the "0" side carriage to absorb the impact force when a large impact force is applied to the "0" side magnetic head. The gimbal structure of the magnetic head in the “0” side carriage.