JPH03212867A - Magnetic disk device - Google Patents

Abstract

PURPOSE:To prevent dust due to screw tightening occurring and to laminate a large number of magnetic disks by forming a suspension mounting part in groove shape, and fixing a suspension at the groove part by applying shrinkage fit or adhesion. CONSTITUTION:The groove part 21a is formed as the mounting part of the suspension 3 to which the suspension mounting part 5 can be inserted by superimposing at the tip of an arm 21 which transmits the driving of an actuator mechanism to a magnetic head 2. A through hole 22 for arm positioning and a through hole 23 for suspension mounting part positioning are provided intersecting orthogonally to the groove part 21a, and the positioning between the arm 21 and the suspension 3 is performed. The suspension mounting part 5 is mounted and fixed at the groove part 21a by superimposing and inserting the suspension mounting part 5 with a shrink fitting or adhesive means. Thereby, no screw is required to use, and no dust occurs from the mounting part, and also, the suspension can be provided adjacently, therefore, a large number of magnetic disks more than ever can be laminated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a magnetic disk device, for example, a magnetic disk device, which is characterized in particular to the mounting structure of a magnetic disk device used in an electronic computer. It is related to.

[Prior Art] Conventional devices of this type include those shown in FIGS. 3 and 4.

In the figure, symbol (1) is a magnetic disk that records information, (
2) is a magnetic head that reads and writes information on the magnetic disc (1), and (3) is a magnetic head that applies pressure to the magnetic head (2) to levitate it with an extremely narrow gap and bring it into contact with the magnetic disc (1). A suspension for generating the magnetic head (4) is driven by an actuator mechanism (not shown) and an arm that transmits this drive to the magnetic head (2) via the suspension (3), and (5) is a suspension (3).
to attach the suspension (3) to the arm (4).
), the suspension mounting part provided at the base end of (
6) is the mounting hole for screwing the suspension mounting part (5) to the arm (4), (7) is the arm screw hole, (
8) is this mounting screw.

In addition, the conventional magnetic head mounting structure for FDD is as follows:
For example, No. 5 shown in Utility Model Application Publication No. 61-86868
There was something like the one shown in the figure.

This is an FDD structure in which a magnetic head detects information on a magnetic disk from above and below, and in the figure, the symbol (9) 1i
It is an arm for FDD, (]0) is a protrusion, (Jl) is an auxiliary frame (12), a fixed pedestal (13) is connected to an arm (9).
) is a fixing screw that is fixed to the

Next, a method of attaching the above conventional device will be explained.

Arm holes (7) are provided on the upper and lower surfaces of the arm (4) so as to face the magnetic disk (1), and the suspension (3)
Attach the magnetic head (2) through the mounting hole (6) of the suspension (3) to which the magnetic head (2) is attached. Install and fix.

Problems to be Solved by the Invention] A conventional magnetic disk device, particularly the attachment part of the magnetic head (2) to the actuator mechanism, is configured as described above, and the arm (4) and the suspension ( 3) Mounting screws are used to attach and fix the screws, and therefore, the dust generated by tightening these screws has a negative effect on the reliability of the magnetic disk device. The mounting accuracy will be reduced, and since the suspension (3) is mounted on the upper and lower surfaces of the arm (4), the distance between the magnetic discs (1) will inevitably become large. It is not possible to stack a large number of
As a result, the conventional device had the problem that the storage capacity could not be increased.

The object of this invention is to solve the above-mentioned problems, and it eliminates the generation of dust caused by the screws at the mounting part of the actuator mechanism henosuspension, and also eliminates the distance between the magnetic disks in mounting. An object of the present invention is to provide a magnetic disk device in which a large number of magnetic disks can be stacked by reducing the size of the magnetic disk, and in which a magnetic head can be accurately attached.

[Means for Solving the Problems] A magnetic disk drive according to the present invention has a mounting portion for attaching a suspension formed in the shape of a groove, and a suspension having a head each having a magnetic head is attached to the groove. The mounting parts are inserted overlappingly and fixed by shrink fitting or adhesive means.

[Function] The attachment part for attaching the suspension in this invention is formed in the shape of a groove, and the suspension attachment part is inserted into this groove in an overlapping manner and is attached and fixed by shrink fitting or adhesive means, so that the suspension can be attached easily. No screws are used in the mounting part, so there is no dust generation, and the reliability of the magnetic tisf device is improved, as well as the mounting accuracy, and by overlapping, the spacing between the magnetic discs can be reduced. Therefore, it is possible to increase the storage capacity.

[Example] Hereinafter, the present invention will be explained based on the drawings showing one example thereof. Note that the items indicated by symbols (1), (2), (3), and (5) are the same as or equivalent to those indicated by the same symbols in the conventional device.

In FIGS. 1 and 2, reference numeral (21) is an arm for transmitting the drive of an actuator mechanism (not shown) to the magnetic head (2), and a suspension mounting portion (5) is attached at the tip of the arm. A mounting portion, for example, a groove portion (21a), is formed for mounting a suspension (3) that can be inserted in an overlapping manner. A through hole (22) for arm positioning and a through hole (23) for positioning the suspension mounting part are provided perpendicularly to this groove (21a). ), a jig (not shown) is inserted to position the arm (21) and the suspension (3).

Next, the operation of the above embodiment will be explained.

First, heat only the arm (21) sufficiently, and then heat the groove (21a) which is the attachment part to which the suspension (3) is attached.
) sufficiently enlarged.

Next, two suspensions (3) each equipped with a magnetic head (2) are stacked on top of each other so that the magnetic heads (2) face the magnetic disc (1), and the suspension mounting portions are attached to the arm ( 21) into the groove (21a).

Immediately after inserting the suspension mounting portion, a positioning jig (not shown) is inserted into the suspension mounting portion positioning through hole (23) and the arm positioning through hole (22) for positioning.

Next, by cooling for a certain period of time, it becomes magnetic.
The suspension (3) equipped with (2) is crimped and fixed to the arm (21) at the mounting portion (5) by shrink fitting.

Also, instead of shrink fitting the suspension mounting portion (5) toe arm (21) and groove portion (21a), the arm (21)
) Pour the adhesive into the groove (21a) formed in the
Next, insert two suspension units (3) equipped with magnetic dots (2) into the grooves (21a) with their suspension mounting parts (5) overlapped, and position them in the same manner as above. Then, the arm (21) and the suspensicon (3) may be adhesively fixed by solidifying the adhesive.

In the second embodiment, two suspensicons (3) each having an arm (21) and a magnetic head (2) are placed on top of each other with their suspensicon mounting portions (5) placed one on top of the other, and then shrink-fitted or bonded. , the arm (21) is removed, and a groove is directly provided in the main body of the actuator R structure (not shown).
The suspension attachment parts of the suspension console (3) each including the magnetic head (2) may be attached in a superimposed manner, and in this case, the same effects as in the above embodiment can be obtained.

[Effects of the Invention] As described above, according to the present invention, the mounting portion for mounting the suspension is formed in the shape of a groove, and the suspension mounting portion of the suspension, each of which has a magnetic head on its head, is mounted in this groove. The parts are inserted overlapping and fixed by shrink fitting or adhesive means.
There is no need to use screws, therefore there is no dust generated from the mounting part, and since the suspension can be installed closer together, the distance between the magnetic disks can be reduced and more magnetic disks can be installed. The magnetic material can be laminated to increase the storage capacity of the device, and since there is no screw connection and it is made by shrink fitting or adhesive means, it can be positioned accurately and increases the reliability of the device. What effect are you getting with the disk device?

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of an arm part and a suspension part of a magnetic disk drive according to an embodiment of the present invention, FIG. 2 is a perspective view of the arm part and suspension part of FIG. 1, and FIG. 3 is a conventional one. FIG. 4 is a vertical cross-sectional view of the arm section and suspension section of an example of a magnetic disk drive, FIG. 4 is a perspective view of the arm section and suspension section of FIG. 3, and FIG. 5 is an exploded perspective view of a conventional FFD arm. be. (1)...Magnetic disc, (2)...Magnetic head, (3)...
・Suspense control, (5)...Suspense control mounting part,
(21) Arm, (21a) Mounting part (groove) for attaching the suspension. In each figure, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims] A magnetic disk comprising a magnetic disk, a magnetic head that writes information to and reads information from the magnetic disk, a suspension to which the magnetic head is attached, and an actuator mechanism that drives the magnetic head via the suspension. The device is characterized in that the mounting portion for attaching the suspension is formed in a groove shape, and the suspension is inserted into the groove with the suspension mounting portions superimposed and fixed by shrink fitting or adhesive means. magnetic disk device.