JPS6015855A - Magnetic head device - Google Patents

Abstract

PURPOSE:To prevent the change of a characteristic and the damage to a magnetic head even if two magnetic heads collide with each other while clipping a magnetic disc at head loading by the structure that the magnetic head fixed to the housing side is fitted by an elastic plate. CONSTITUTION:Fixed parts 19a, 19b fixed respectively to the housing 18 and the magnetic head 3 are formed to the elastic plate 19 and several slots 19c are provided to the plate 19. An adhesives 21 is supplied to the fixed part 19b and the bonded part is bonded to the magnetic head 3. After the magnetic head 22 is inserted to a hole part 18a provided to the housing 18 and is positioned, the fixed part 19a and the housing 18 are fixed by the adhesives 23 to form the magnetic head 25. On the other hand, a couple of magnetic heads are constituted by fixing an arm fitted with an opposite magnetic head to the housing 18 from the upward direction, and since they are supported elastically, the shock is absorbed even if they collide with each other.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a magnetic head device, and more particularly to a magnetic head device that records and reproduces information by sandwiching a magnetic recording medium between an elastically supported magnetic head and a magnetic head fixed to a housing. The present invention relates to a magnetic head device.

Prior Art Conventionally, in this type of magnetic head device, a magnetic disk serving as a magnetic recording medium is sandwiched between an elastically supported magnetic head and a magnetic head fixed to the housing side, and information is recorded on both sides of the magnetic recording medium. Regeneration is occurring.

Conventionally, this type of magnetic head has a structure as shown in FIGS. 1 to 3. In each figure, the reference numeral 1 indicates a magnetic disk, and in the illustrated example, a protective cover for the magnetic disk is omitted for the purpose of simplifying the explanation. A circular opening 1a is provided, during which the magnetic disk 1 is rotated in the direction of arrow 2 by rotation of a rotating shaft of a driving means (not shown) fitted into the opening 1a.

Adhesive 10 is applied to the housing 8 on the bottom side of the magnetic disk 1.
A magnetic head 3 fixed by a magnetic head 3 is disposed, and a magnetic head 6 is elastically supported on the lower surface of the tip of the arm 5 on the upper surface side, and a magnetic gear knob formed on the magnetic head 3 is used when recording and reproducing information. 4 and a magnetic gap (not shown) provided in the magnetic head 6 move so as to come into contact with each surface of the magnetic disk. Due to the contact of the magnetic gap 4, the bottom surface of the magnetic disk 1 is formed along the trunk 3a.
Also, each information is recorded and reproduced along the track 6a formed on the upper surface of the magnetic disk 1 by contact of the magnetic gap of the magnetic head 6. The structure of the magnetic heads 3, 6 is shown in more detail in FIGS. 2 and 3, and the arm 5 is attached to an elastic plate 11 made of copper alloy, stainless steel, etc., and the other end of the elastic plate is It is attached to an arm fixing portion 8a provided in the housing 8 with screws 14. An elastic plate 9 made of copper alloy, stainless steel, etc. is similarly attached to the lower surface of the arm 5, and the magnetic head 6 is attached via this elastic plate 9. Further, a spring 13 is attached to the spring column 12 so that information can be stably recorded and reproduced on the magnetic disk 1, so that the magnetic disk 1 is subjected to a pressing force in the direction of the arrow 7. One end of the spring support 12 is fixed to the arm fixing portion 8a together with the elastic plate 11, thereby forming a magnetic throat device 15.

In the conventional configuration as described above, the magnetic head 3 located at the lower side of the housing 8 is fixed to the housing 8 using an adhesive, which prevents the magnetic head 6 from colliding with the magnetic head 3 when the head is loaded. become. This impact is quite large, and if repeated many times, it will damage the surface of the magnetic head 10, and in some cases, it will become impossible to record and reproduce, and the performance of the magnetic head will be impaired or it will be damaged.

Purpose Therefore, the present invention has been made in order to eliminate such conventional drawbacks, and is capable of alleviating the impact of 1K caused by the collision of a pair of magnetic nodules facing each other, and improving the performance of magnetic disks without impairing performance. It is an object of the present invention to provide a magnetic head device that does not cause any damage to the magnetic head.

EXAMPLES The present invention will be described in detail below based on examples shown in the drawings.

An embodiment according to the present invention is illustrated in FIGS. 4 and 5, and in each figure, the same parts as in FIGS. 1 to 3 are denoted by the same reference numerals, and the explanation thereof will be omitted.

FIG. 4(a) shows a magnetic head 3 fixed to the housing side in which the front core and coil are housed in a case 3e, and this magnetic head 3 is similar to the one shown in FIG. 4(b). Elastic plate 19 made of copper alloy or stainless steel thin plate
/. is fixed to housing 18 (corresponding to housing 8 in FIG. 1) via /. This elastic plate 19 has No.
A fixed part 19a fixed to the magnetic head 3 side and a fixed part 191 fixed to the magnetic head 3 side are formed, and grooves 19C are provided at several places between each fixed part 19a and iSb to obtain elasticity. . Fixed portion 19 of this elastic plate 19
An adhesive 21 is applied to the portion b as shown in FIG. 4 (rd), and is adhered to the magnetic head 3 to form a magnetic head 22 as shown in FIG. 4 (C).

After inserting this magnetic head 22 into the hole 18a provided in the housing 18 and positioning it as shown in FIGS. A pair of magnetic heads is constituted by the magnetic head 25 fixed with adhesive 23. Since both magnetic heads are supported elastically in this way, even if each head collides, the impact will be absorbed. Therefore, the magnetic head will not be damaged or its characteristics will change, and the surface of the magnetic disk will not be damaged.

In the embodiment described above, the groove 19C provided in the elastic plate 19 is for absorbing impact, and its shape is not limited to that shown in the drawings.

In addition, the part 191 fixed to the magnetic head 3 is bent to increase the strength of fixing it to the magnetic head 3, and the part 191 is fixed to the magnetic head 3.
It may be inserted into the case 3b or fitted and fixed.

Effects As explained above, according to the present invention, the magnetic head fixed on the run/reverse side is reassembled so that it is attached via an elastic plate, so that the magnetic disk is sandwiched between the two magnetic heads when the head is loaded. Even if a magnetic disk collides with the disk, the impact can be absorbed by the elastic plate, resulting in excellent effects such as no change in characteristics or damage to the magnetic head, and no scratches on the surface of the magnetic disk.

[Brief explanation of drawings]

1 to 3 show a conventional magnetic head device, and FIG. 1 is a perspective view showing the entire structure including a magnetic disk;
Fig. 2 is a perspective view showing the structure of the magnetic head, Fig. 3 is a side view thereof, Figs. 4 and 5 are detailed explanations of the present invention, and Fig. 4(a) is the structure of the magnetic head. FIG. 4(b) is a perspective view of the elastic plate, FIG. 4(c) is a perspective view showing the structure of the magnetic head with the elastic plate attached, and FIG. 4(d) is a perspective view of the elastic plate.
) is an explanatory diagram showing the adhesive location of the elastic plate, FIG. 5(a) is a perspective view showing the structure in which the magnetic head is attached to the arm,
Figure (b) is an explanatory view showing adhesion between the elastic plate and the housing. 3...Magnetic head 3b...Case 5...Arm 6...Magnetic head 18...Housing 19...Elastic plate 21.23...
・Adhesive patent applicant Canon Electronics Co., Ltd.

Claims (1)

[Claims] ■) In a magnetic head device that records and reproduces information by sandwiching a magnetic recording medium between an elastically supported magnetic head and a magnetic head fixed to a housing, the magnetic head on the housing side A magnetic head device characterized in that a head is fixed to a housing via an elastic plate. 2) a fixing portion for fixing the magnetic head to the elastic plate;
2. The magnetic head device according to claim 1, wherein the elastic plate is provided with fixed portions in the housing, and a groove is provided between each fixed portion.