JPS61160823A - Magnetic head - Google Patents

Abstract

PURPOSE:To control easily the coating amount of resin when a slider assembly is attached to prevent a fault due to the swell-out of resin and to secure the satisfactory adhesion intensity, by providing the hole for injection of the adhesive resin to a gimbal or a plate to which the slider assembly is attached. CONSTITUTION:To holes 6 for injection of the adhesive resin are formed to a gimbal or a plate 1 for attachment of a slider assembly 8 for a miniature floppy disk magnetic head, etc. At the same time, a level difference l is secured to a slider 5 to a slider 4. Then the adhesive resin is injected only to a gap between the slider 5 and the plate 1. Thus the amount of the adhesive resin swelling out of the assembly 8 is limited by the hole 6. Then the swell-out amount of the resin is minimized together with the satisfactory adhesion intensity secured. This avoids such as case where a shielding plate floats over the plate 1 when the shielding plate is adhered to the assembly 8 and touches a magnetic disk.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a magnetic head used for recording, reproduction, etc., and particularly to a magnetic head using a girval or plate.

2. Description of the Related Art In recent years, floppy disk drives and other magnetic recording devices are becoming smaller and heavier. For this reason, the distance between the magnetic head and the motors has become shorter, and it has become necessary to take measures against the noise.

As a method of shielding on the magnetic head side, high magnetic permeability or aI! A common method is to cover the magnetic head with an electrically conductive shield plate.

Using a 3-inch or 3.5-inch floppy disk in a miniaturized floppy disk drive,
There is something called a compact 7O disk drive or a microfloppy disk drive. These 3-inch and 3.5-inch disks are housed in a plastic case, and the magnetic head comes into contact with the disk by entering a head window provided in the case.

For this reason, the magnetic head needs to be smaller than the inside of the head window, and when installing the shield cover around the head, it must be installed closely around the slider assembly of the magnetic head to avoid hitting the plastic case. There must be.

A conventional magnetic head using a gimbal or plate will be described below. Here, the gimbal is a flexible leaf spring that improves the tracking ability of the magnetic head with respect to the media, and the plate is a relatively thick plate that does not have the above-mentioned flexibility.

Hereinafter, both will be collectively referred to as plates.

FIG. 4 is a perspective view of the slider bonded to the plate with resin. Here, 1 is a plate, 2 is a slider assembly, and 3 is a shield cover. The slider assembly 2 is bonded to the plate 1 with resin 9.

Problems to be Solved by the Invention However, in the above-mentioned conventional magnetic head using a plate,
Since the resin 9 was applied directly around the slider assembly 2, it was not possible to prevent the resin from protruding, and it was difficult to control the amount of the resin 9 because the amount of application was difficult to determine. Moreover, if the amount of this resin 9 is large, the shield plate 3 will float away from the plate 1 when it is glued around the slider assembly 2.
There was a problem that there was a risk of hitting the disc.

The present invention solves the above-mentioned conventional problems, and aims to minimize the protrusion of resin when bonding a slider assembly to a plate, and to satisfy the adhesive strength. be.

Means for Solving the Problems In order to achieve the above object, the present invention provides a gimbal or plate to which a slider assembly is attached, provided with a resin injection hole for bonding the gimbal or plate and the slider assembly with resin. be.

Function: With this type of product, the resin can be applied using the resin injection hole, so compared to the conventional method of directly applying the resin, it is possible to minimize the overflow and reduce the amount of resin applied. can also be easily checked.

Examples Examples of the present invention will be described below. FIG. 1 is an assembly diagram in the case of plate adhesion, and FIG. 2 is a perspective view of the back side showing the resin injection state.

In FIG. 1, 4 is a first slider, 5 is a second slider, and both sliders 4.5 constitute a slider assembly 8. Reference numeral 6 indicates a resin injection hole (pull hole) formed in the plate 1, and reference numeral 6 indicates a step difference between the first slider 4 and the second slider 5. In FIG. 2, a indicates the diameter of the resin injection hole 6.

Between the first slider 4 and the second slider 5,
When bonding to the plate 1, one bottom surface is used as a reference surface and the bond is parallel to the plate 1, so generally a step Q is provided. Therefore, one side of the slider 4.5 will have a gap corresponding to the step ρ when the slider assembly 8 is bonded to the plate 1. Here, a gap is created on the second slider 5 side. The resin injection hole 6 of the plate 1 is located below the slider 5, and the resin 9 is injected from the resin injection hole 6 only into the gap between the slider 5 and the plate 1, as shown in FIG. For example, the direction of the resin 9 protruding from the slider assembly 8 can be restricted. At this time, if the diameter a of the resin injection hole 6 of the plate 1 is selected so that when the hole 6 is fully filled and cured, the resin 9 flows and just fills the gap between the plate 1 and the slider 5. , the amount of protruding resin 9 can be minimized, and the adhesive strength can be satisfied.

Further, as another embodiment, as shown in FIG. 3, by providing a resin retaining recess 7 in the second slider 5, it is possible to obtain even greater adhesive strength between the slider and the plate.

The number and shape of the resin injection holes (friend holes) 6 described above are arbitrary.

Effects of the Invention As described above, according to the present invention, the extrusion of the resin can be minimized and satisfactory adhesive strength can be obtained.

[Brief explanation of the drawing]

Fig. 1 is an assembled view of one embodiment of the present invention, Fig. 2 is a perspective view of the back side thereof, Fig. 3 is a perspective view of another embodiment of the invention, and Fig. 4 is a perspective view of a conventional example. be. 1... Plate, 3... Shield plate, 6... Resin injection hole, 8... Slider assembly, 9...
Resin Agent Yoshihiro Morimoto Figure 1 t --- 7'L-) Resin injection β --- Slider 7, / Senfry Figure 2 - Resin Figure 3

Claims (1)

[Claims] 1. A magnetic head characterized in that a gimbal or plate to which a slider assembly is attached is provided with a resin injection hole for bonding the gimbal or plate and the slider assembly with resin.