JP2776653B2 - Magnetic disk drive - 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 disk drive, and more particularly to a magnetic disk drive which performs a positioning operation by operating a mover of a linear pulse motor.

[0002]

2. Description of the Related Art Generally, as shown in FIG. 2, a magnetic disk drive of this type mounts a magnetic head 2 via a magnetic head mounting base 6 and a head support member 3 and reciprocates linearly. the movable element 11 stator which is fixed and mounted on the apparatus body is provided as drive (not shown) and Bei the
And e. A through hole 8 is formed in the magnetic head mounting portion of the mover 11 so as to face the magnetic head mounting portion. The magnetic head 2 is supported by a head support member 3 having a gimbal structure, and the head support member 3 is held by a magnetic head mount 6. Further, the magnetic head mounting base 6 is provided with the movable element 11 described above.
The movable element 11 is installed in the through hole 8 formed in the movable element 11.

[0003] head supporting member 3 includes a gimbals Le section 3A to tilt in any direction according to the magnetic head 2 as required to support the magnetic head 2, a magnetic head mount while supporting the gimbal portion 3A Attach to attach to 6
The outer peripheral portion 10 is formed.

The magnetic head mounting base 6 is formed of resin or the like, has a substantially L-shaped cross section, and is formed by an outer peripheral protruding portion 9 and an inner peripheral protruding portion 6A. In the inside of the inner peripheral protruding portion 6A of the magnetic head mounting base 6, an escape hole serving as an escape port for the inclined side (inclined side) 3B, 3C when the gimbal portion 3A of the head support member 3 is inclined. 5
Are formed. The magnetic head mounting base 6 is incorporated with the inner peripheral projection 6A of the magnetic head mounting base 6 inserted into a through hole 8 formed in the mover 11. At this time, the magnetic head mount 6
The outer peripheral protrusion 6A serves as a stopper for stopping the insertion operation when the magnetic head mounting base 6 is inserted into the through hole 8 and inserted to an appropriate position. Further, a shield 7 is mounted on the lower surface of the magnetic head mount 6 while keeping the same surface as the lower surface of the mover 11 (see FIG. 3). The shield 7 shields a magnetic field from a stator side that moves the mover 11 in a radial direction of a medium (not shown) by a magnetic field at a predetermined position, and protects the electromagnetic conversion action of the magnetic head 2. Reference numeral 12 is
2 shows magnetic pole teeth provided in the mover 11.

[0005]

However, in the above-described conventional example, the magnetic head mount 6 for holding the head support member 3 and the relief hole 5 of the gimbal portion 3A of the head support member 3 in the magnetic head mount 6 are provided. And a shield 7 for blocking the magnetic field on the stator side. For this reason, the number of parts and the number of assembling steps in the entire apparatus are increased, and there is a disadvantage that the apparatus becomes expensive. In addition, since a plurality of places for fixing the parts and the like described above are required, there is an inconvenience that the dimension of the magnetic head 2 with respect to the mover 11 in the height direction (between the arrows A shown in FIG. 3) becomes large. Was.

[0006]

This onset bright OBJECTS OF THE INVENTION Such a conventional example improving the disadvantages possessed by, in particular, there is ensured a low cost in terms of cost to reduce the number of parts and assembling steps of the entire apparatus, magnetic heads against the mover dimensions of the height direction of reducing the,
Accordingly, it is an object of the present invention to provide a magnetic disk drive capable of reducing the size and weight of a head portion.

[0007]

Means for Solving the Problems To achieve the above object,
Therefore , in the present invention, a head support member having a gimbal structure for supporting a magnetic head, a mover mounted with the magnetic head via the head support member and reciprocating linearly, and provided for driving the mover are provided. In a magnetic disk drive having a stator fixedly mounted on an apparatus main body, a head support member is mounted on a magnetic head provided at one end of a mover.
With equipped directly in, the magnetic head mounting unit described above in this armature, movement of the gimbal structure portion of the head supporting member
Provide a recess that allows operation . And, of the movable element described above
The other end is urged from the stator side to the mover.
The magnetic pole that generates the specified transfer force is superimposed on the head support member.
You arranged without Rukoto, it adopts a configuration that.

[0008]

When the gimbal portion of the head supporting member for supporting the magnetic head is inclined in an arbitrary direction, the inclined side of the gimbal portion is allowed and accepted by the concave portion on the mover side. Therefore, for example, the magnetic head mount 6 and the shield 7 used in the conventional example as shown in FIG. 2 become unnecessary.
Also, since it is not necessary to attach the magnetic head mounting base to the mover, the head support portion of the mover
The height of the fixed portion of the timber (thickness) Ru is reduced.

[0009]

EXAMPLES Hereinafter, a description will be given of an embodiment of the present invention have groups Dzu in FIG. Here, the conventional example and the same components as previously mentioned, we shall use the same reference numerals.

FIG. 1 is a development view of the magnetic disk drive 1 according to the present embodiment, as viewed from obliquely above. In FIG. 1, a head support member 3 having a gimbal structure for supporting a magnetic head 2 and a magnetic head 2 via the head support member 3 are provided.
And a stator (not shown) provided for driving the movable element 11 and fixedly mounted on the apparatus main body 1. Then, the head supporting member 3 as well as equipment directly to the movable member 11, this is the magnetic heads mounted portion of the movable member 11 is provided with a relatively large recess 4 opposite the equipped area of the magnetic head 2. here
The magnetic head mounting portion 4A is a movable element as shown in FIG.
11 is provided at one end (the right end side in FIG. 1),
The pole portion (the portion to which the transfer driving force is urged) 12 is shaped like a plane.
And is provided at the other end (left end side in FIG. 1) of the mover 11.
Have been.

This will be described in more detail.
Supports the magnetic head 2 as described above,
The magnetic head 2 has a gimbal portion 3A for inclining the magnetic head 2 in an arbitrary direction as required, and has inclined sides 3B and 3C.
It is comprised including.

The mover 11 is made of a metallic material, and has a mounting portion 4A as a magnetic head mounting portion on which the magnetic head 2 is mounted via the head support member 3. As shown in FIG. 1, the mounting portion 4A has a magnetic pole portion.
(The part to which the transfer driving force is urged)
Installed and installed at a position away from the magnetic pole section 12
I have. For this reason, the overall thickness is thinner compared to the conventional example.
It is possible to do. And this magnetic head
A recess 4 for temporarily receiving the inclined sides 3B and 3C of the gimbal portion 3A in the head support member 3 is formed in the mounting portion 4A for the second . The recess 4 is formed by half-etching, and is cut out in a square shape with the bottom 4B left. Also, this bottom 4
B is formed with a thickness capable of blocking a magnetic field on the stator (not shown). That is, in the present embodiment, the magnetic head 2 is used by utilizing the fact that the mover 11 is made of metal.
A part of the mover 11 is also arranged below the lower part, so that the leakage magnetic field on the stator side can be shielded by the bottom 4B of the concave part 4 in the mover 11.

[0013] movable member 11 formed as this, the head supporting member 3 that gimbal portion 3A of the head support member 3 in the recess 4 of the mounting portion 4A described above so as to face
Is fixed to the outer peripheral portion 10. Therefore, even if the gimbal portion 3A of the head support member 3 is inclined in an arbitrary direction, the inclined sides 3B and 3C can be received in the concave portion 4.

As described above, according to the present embodiment, a relatively large concave portion 4 is formed in the magnetic head mounting portion 4A of the mover 11 so as to face the mounting region of the magnetic head 2, and this concave portion 4 is shown in FIG. from what has a shape having a bottom portion 4B as shown in 1, it is possible to equip the movable element 11 of the head supporting member 3 directly. For this reason, the magnetic head mounting base 6 and the shield 7 used in the conventional example become unnecessary, and the number of parts of the whole apparatus and the number of assembling steps of the head parts can be reduced, and the cost can be reduced. In addition, since the head support member 3 can be directly provided on the mover 11 as described above, the number of fixed parts in the number of parts of the mover 11 can be reduced.

For this reason, the mounting accuracy of the magnetic head 2 with respect to the mover 11 is improved, and the dimension and the dimensional error in the height direction can be reduced. Further, the accuracy of the parallelism of the medium contact surface of the magnetic head 2 is improved. Further, the method of manufacturing the concave portion 4 of the mover 11 can be formed at the same time when the magnetic pole teeth 12 are formed by half etching, so that the number of processing steps does not increase. In addition, the accuracy of the depth of the concave portion 4 is large because the thickness of the movable element 11 itself is large and the shielding action is sufficient.
It is not necessary to make the depth accuracy strict. Also, the magnetic pole teeth 12
As shown in FIG. 1, the mover 11 and the head support member 3
Since the outer peripheral portion 10 and the mover 11 are in direct contact with each other,
The static electricity of the magnetic head 2 can be transmitted to the mover 11 and grounded, thereby increasing the resistance to external noise.

[0016]

The present invention is constructed and functions as described above.
Therefore, according to this , the head is a gimbal-structured head support.
Since it is equipped directly with the mover via the holding member ,
Conventional magnetic head mount and fine shield that was used in becomes unnecessary, it is Rukoto reduce the number of assembly steps of the overall number of parts and the head component device, to
Therefore, not only can the productivity be improved, but also the cost can be reduced. Also, as mentioned above
The head at one end of the mover is arranged and
The magnetic pole that generates the transfer force to the mover is the head support
Since it is arranged without overlapping the material,
It is possible to improve the mounting accuracy of the magnetic head as the number of parts is reduced, and at the same time,
Dimensions and dimensional errors can be reduced, and
Size and weight can be reduced, thus improving responsiveness.
Can it provide superior magnetic disk device unprecedented that more may further improve.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a magnetic disk drive according to an embodiment.

FIG. 2 is a development view illustrating a conventional example.

FIG. 3 is a sectional view of the vicinity of a magnetic head in FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Magnetic disk drive 2 Magnetic head 3 Head support member 3A Gimbal part 4 Concave part 4A Mounting part (magnetic head mounting part) 11 Mover

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Masayoshi Kayama 32, Nishiyajima, Ota-shi, Gunma Gunma Nippon Electric Co., Ltd. (56) References JP-A-61-57079 (JP, A) Japanese Utility Model Showa 64 −31566 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) G11B 21/02

Claims (1)

(57) [Claims] 1. A head support member having a gimbal structure for supporting a magnetic head, a mover mounted with the magnetic head via the head support member and reciprocating linearly, and an apparatus provided for driving the mover in a magnetic disk device having a fixed instrumented stator body, said head support member, provided at one end of said movable element
And while mounted directly on the magnetic head mounting portion, the magnetic head mounting portion of the movable element, of the head supporting member Gin
A concave portion for allowing operation of the valve structure portion is provided, and the other end of the mover is provided with the stator with respect to the mover.
The magnetic pole portion that generates a predetermined transfer force biased from the side
A magnetic disk drive, wherein the magnetic disk drive is arranged without overlapping the head support member .