JPH09198823A - Supporting structure for contact type magnetic head - Google Patents

Abstract

PROBLEM TO BE SOLVED: To record and reproduce with high sensitivity by bringing into contact with the surface of a magnetic disk by three or more pads, and effectively bringing the pole pads into contact with the surface of the disk even if there is an error in assembling of the disk. SOLUTION: The support 15 made of elastic material for supporting the magnetic head 7 comprises a mount 18 at a head arm, an arm 16 and a magnetic head mount 20. Pole pad 46 and auxiliary pad 47 are provided on the surface 45 of the head 7 opposed to the surface of the disk 7, and the pads 46, 47 are brought into contact with the surface of the disk 7. The pressing part 42 of contact pressure giving means 16 applies a pressing force to the position of the center of gravity of the pads 46, 47, which are all brought into contact with the disk surface by substantially equivalent contact pressures to slide, thereby making it possible to magnetically record and reproduce the disk by the pad 46 in the process with high sensitivity.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for supporting a magnetic head for recording / reproducing on / from a magnetic disk in a magnetic disk device, and more specifically, to the above-mentioned recording / reproducing while being in contact with the surface of the magnetic disk. The present invention relates to a contact type magnetic head support structure.

[0002]

2. Description of the Related Art The following is a support structure of this type. A contact type magnetic head is attached to the tip of the elastic support, and the base of the elastic support is attached to a head mounting base in the magnetic disk drive. The elasticity of the elastic support makes the magnetic pole pads of the magnetic head contact the surface of the magnetic disk (see, for example, Japanese Patent Laid-Open No. 6-150251).

In the above contact type magnetic head, since the magnetic pole pad is brought into direct contact with the surface of the magnetic disk for recording and reproduction, high sensitivity recording and reproduction can be performed.

[0004]

However, in the above structure, the magnetic head is supported by the elastic support, and the elastic support makes a predetermined contact with the magnetic pole pad on the surface of the magnetic disk. I try to give pressure. Therefore, there is an error in assembling the magnetic disk device, for example, there is an error in the height of the head mounting base relative to the surface of the magnetic disk in the height direction, the roll direction, or the pitch direction, or the elastic support is mounted on the mounting base. If a similar error occurs, its influence extends to the magnetic pole pad of the magnetic head, and the magnetic pole pad is tilted with respect to the surface of the magnetic disk, so that the sensitivity of recording or reproducing is lowered or becomes unstable. There was a problem to do.

In order to solve such a problem, auxiliary pads are provided on the magnetic head in addition to the magnetic pole pads so that the number of pads contacting the magnetic disk is three or more.
It was considered to make contact with the surface of the magnetic disk at a point or more.

According to this structure, the magnetic pole pad can be surely brought into contact with the surface of the magnetic disk in a predetermined direction, and as a result, the recording and reproducing with high sensitivity can be stably performed.

However, if there is an assembling error of the magnetic disk device or a similar error occurs in the attachment of the elastic support to the attachment base as described above, the contact pressure of each pad with respect to the surface of the magnetic disc is biased. Occurs, some pads wear out faster than other pads, and the life of the magnetic head is exhausted in a short period of time.Pads with concentrated contact pressure vibrate in a so-called wear ringing state. There was a problem to do. In addition, as a result, there is a problem that the demands on assembly tolerances become extremely severe, which lowers the assembly yield and raises the assembly cost.

The support structure of the contact type magnetic head of the present invention is provided to solve the above-mentioned problems of the prior art. An object of the present invention is to provide a structure for softly gripping a magnetic head at a portion of a support body for gripping a magnetic head, to expand an allowable range of an assembly error and to improve an assembly yield to a hard disk drive. . The magnetic pole pad is surely oriented in a predetermined direction with respect to the surface of the magnetic disk, and the magnetic pole pad of the magnetic head is brought into direct contact with the magnetic disk so that recording and reproduction can be performed with high sensitivity. Another purpose is to make contact with the surface of the magnetic disk with three or more pads, so that even if there is an error in the assembly of the magnetic disk device, the magnetic pole pad can be reliably placed in a predetermined orientation with respect to the surface of the magnetic disk. By making them contact with each other, it is possible to stably perform the above-described highly sensitive recording and reproduction. Another object is to allow the above-mentioned three or more pads to be brought into contact with the surface of the magnetic disk with an even contact pressure so that the wear of these pads is equalized and the magnetic head can be used for a long life. It is to be. Other objects and advantages will be more readily apparent from the drawings and the following description associated therewith.

[0009]

In order to achieve the above object, the contact magnetic head support structure in the present invention is
A contact-type magnetic head having three or more contact pads each including at least one magnetic pole pad for making contact with the magnetic disk is attached to the tip of the support,
In the support structure of the contact type magnetic head in which the contact pads in the contact type magnetic head are brought into contact with the surface of the magnetic disk, the support is a support made of an elastic material for supporting the magnetic head, The contact pressure applying means for applying a pressing force to or near the center of gravity of the three or more contact pads, and the elasticity of the support and the contact pressure applying means provide the three or more contact points. A contact pressure is applied to the contact pad against the surface of the magnetic disk.

[0010]

DETAILED DESCRIPTION OF THE INVENTION The drawings showing the embodiments of the present invention will be described below. FIG. 1 shows an outline of a magnetic disk drive. In FIG. 1, 1 is a base frame, and 2 is a magnetic disk, which is rotated in the direction of arrow 3 by a motor (not shown). Four
Denotes a head mounting base serving as a pedestal for mounting a magnetic head, and a head arm is exemplified. Reference numeral 5 denotes an actuator for driving the head arm 4, and the base of the arm 4 is stopped. Reference numeral 6 denotes a support attached to the tip of the arm 4, and reference numeral 7 denotes a contact-type magnetic head supported by the support 6, and a tip of the support 6 for positioning along the surface 2a of the magnetic disk 2. It is attached to. In the present specification, the height direction of the head mounting base 4 with respect to the surface 2a of the magnetic disk 2 means a direction perpendicular to the surface 2a and is indicated by an arrow H. Also, the inclination in the pitch direction is
The tilt of the arm 4 with respect to the surface 2a in the take-out direction (the direction from the base to the front, indicated by the arrow L) is referred to, and the tilt in the roll direction is the tilt in the direction orthogonal to the take-out direction.

Next, the structure provided for attaching the support 6 at the front portion of the head arm 4 will be described with reference to FIGS. 2 and 3. 11a and 11b are support tools 6
Is a through hole for locating the mounting position, 12 is a through hole for connecting a lead wire, and 13 is a through hole for bending a spring for applying a contact pressure described later.

Next, the support 6 will be described with reference to FIGS. 2 to 4 and 6 to 10. Even if there is an error in the height direction or an error in the roll direction and the pitch direction in the positional relationship of the head arm 4 with respect to the surface 2a of the magnetic disk 2, the support tool 6 has a plurality of magnetic heads 7 on the surface 2a. Support 15 made of an elastic material for supporting the magnetic head 7, and a contact pressure applying means 16 for applying a pressing force to the magnetic head 7 in order to bring the contact pads of the above into contact with each other with a uniform contact pressure. The support 15 holds the magnetic head in a state in which the plurality of contact pads contact the surface 2a of the magnetic disk, and the contact pressure applying means 16 applies a pressing force to substantially the center of gravity of the plurality of contact pads. I am trying to add it. For example, in order to reduce the wear of the magnetic pole pad 46,
The position where the pressing force is intentionally applied may be adjusted to a position slightly displaced from the center of gravity toward the auxiliary pad 47 side. The details of the support 15 will be described. The support 15 includes a mounting portion 18 at the base portion for mounting to the head arm 4, an arm portion 19 extending from the mounting portion 18, and a head mounting portion 20 at the distal end for mounting the magnetic head. The arm portion 19 is divided into two arm portions 19 positioned side by side in order to flexibly cope with an error in the tilt of the head arm 4 in the roll direction.

The support 15 is a means for supporting the magnetic head 7 and at the same time a signal transmitting means for passing an electric signal to and from the magnetic head 7. Is configured. First, as shown in FIGS. 8 to 10, the support 15 includes a first layer 21, a second layer 22, and a third layer 23.
It is composed of 3 layers. The first layer 21 is a layer having a function as a signal conductor layer for passing the electric signal and a function as an elastic layer for giving elasticity that enables the arm portion 19 to bend in the vertical direction. Yes, it is made of a material having conductivity and elasticity. For example, it is made of stainless steel and has a thickness of about 10 μm. The first layer 21 is provided over the entire length of each arm 19 for transmitting the electric signal, and the mounting portion 18 and the head mounting portion 20 each have a pair of signal conductors. Reference numeral 21 in FIG.
The first layer is absent in the portions indicated by a and 21b. The third layer 23 is a layer for imparting mechanical rigidity or structural strength to the mounting portion 18, the head mounting portion 20, and part of the arm portion 19, and is made of, for example, stainless steel and has a thickness of 25 μm.
It is a degree. The second layer 22 is a layer for mechanically adhering the first layer 21 and the third layer 23 and electrically insulating them, and is made of, for example, epoxy or polyimide, and has a thickness of 25.
It is about μm.

Each part of the support 15 will be described below. The mounting portion 18 has the above three layers in order to have mechanical strength.
It is composed of 21, 22, and 23. Also, as described above, the first layer
21 is divided at the missing portion 21a. As a matter of course, the second layer 22 is not provided at the above-mentioned lacking portion 21a. Reference numeral 24 is a connecting portion of a lead wire for transmitting an electric signal, and a through hole is formed in the second layer 22 and the third layer 23 to expose the first layer 21. 25 is a mounting portion 18 for the head arm 4
Is shown, and only the third layer 23 is fixed by, for example, laser welding means.

In order to cope with an error in the height direction and an error in the pitch direction of the head arm 4, the arm portion 19 has a rigid body portion 27 at the middle portion in the longitudinal direction, and both end portions of the arm portion 19 are flexible portions 28, respectively. , 29 to connect to the mounting portion 18 and the head mounting portion 20. The rigid portion 27 is composed of the above three layers 21, 22, and 23 as shown in FIGS. 8 and 9 so as to have rigidity. Reference numerals 31a and 31b are positioning portions for the head arm 4 and are formed in a substantially semicircular shape that overlaps with the positioning holes 11a and 11b, respectively. Both flexible parts 28, 29 are composed of only the first layer 21. The flexible portion 28 has a plurality of slits 30 formed in the directions shown in FIG. 3 in order to increase the resistance to deformation in the lateral direction and enhance the flexibility in the vertical direction. The flexible portion 29 is formed to have a narrow width as shown in the figure to enhance flexibility. The flexible portion 28 brings the head mounting portion 20 close to the magnetic disk 2 so that the magnetic head 7 mounted thereon can be moved along the magnetic disk 2.
As shown in FIGS. 7 and 8, the boundary portion 28a with the mounting portion 21 is bent at a slight angle θ1 (for example, about 5 °). Further, the flexible portion 29 has a plurality of pads in the magnetic head 7 along the surface 2a of the magnetic disk 2 in parallel, so that a portion 29a thereof has the boundary portion as shown in FIGS.
It is bent in a direction opposite to the bending direction of 28a. Angle θ
2 is the same as the angle θ1.

The head mounting portion 20 has the above three layers 21, 22, 23 in order to have rigidity as a base for mounting the head 7.
It consists of. Also, as mentioned above, the first layer 21 is a missing part.
It is divided at 21b. 32 is the head 7 on the mounting part 20
Are mechanically attached and electrically connected to each other, and through holes are formed in the second layer 22 and the third layer 23 to expose the first layer 21. The part through the through hole
For example, ultrasonic energy is applied to the first layer 21 of 32,
The first layer 21 of 32 and the terminals of the magnetic head 7 (also called connection pads) are bonded.

Next, the contact pressure applying means 16 applies a thin predetermined spring contact material, for example 150 mg · f, to the plurality of pads of the magnetic head 7 against the surface 2a of the magnetic disk 2 to form a thin spring material, for example, a thin spring material. A stainless steel plate of 20 μm is formed into a shape as shown in FIG. Reference numeral 35 denotes a mounting portion of the base portion to the head arm 4, and reference numeral 36 denotes a positioning hole, which is formed so as to overlap with the positioning hole 11a. Reference numeral 37 in FIG. 2 indicates a position where the mounting portion 35 is fixed to the head arm 4, and is fixed by, for example, laser welding means. Reference numeral 38 denotes an arm portion for generating a spring force, which is formed in a narrow width as shown in order to generate a spring force of a magnitude suitable for giving the above-mentioned predetermined contact pressure, and a lateral displacement of the pressing portion described below. It is composed of two arms 38, 38 that are spaced apart from each other to keep them small. Reference numeral 39 denotes a boundary portion between the mounting portion 35 and the arm portion 38, which has a predetermined angle θ3 as shown in FIG. 6 in order to apply a pressing force to the magnetic head.
It is bent at (for example, 12 °). The degree of bending of the portion 39 is adjusted through the through hole 13. Reference numeral 40 denotes a horizontal bridge portion provided to connect the tips of both arm portions 38 with each other so as to provide a pressing portion in the middle thereof. A working piece 41 is projected from the intermediate portion, and one point at the tip thereof is a magnetic head. The pressing portion 42 is for applying a contact pressure to the plurality of contact pads 7. Reference numeral 43 denotes a bent portion, which is bent at a predetermined angle θ4 (for example, 12 °) as shown in FIG. 6 in order to apply a pressing force to the magnetic head. The positional relationship between the head mounting portion 20 and the pressing portion 20 in the support 15 is from the pressing portion 42 to the head mounting portion 20.
The pressing force applied to is applied to the magnetic head 7 via the head mounting portion 20 at or near the center of gravity of the contact pads of the magnetic head 7.

FIG. 5 shows the magnetic disk facing surface 45 of the magnetic head 7. Reference numerals 46 and 47 denote contact pads for contacting the surface 2a of the magnetic disk 2. Of these,
The pad 46 is a magnetic pole pad for performing recording and reproduction with respect to the magnetic disk 2. In order to increase the efficiency of magnetic flux transmission with the magnetic disk 2, the pad 46 contacts the surface 2 a of the magnetic disk 2 to perform recording and reproduction. It is something to do. pad
Reference numeral 47 denotes an auxiliary pad that is brought into contact with the surface 2a of the magnetic disk 2 in order to maintain the positional relationship (the inclination with respect to the surface 2a) of the magnetic pole pad 46 with respect to the surface 2a in a predetermined state. The tip of each of the magnetic pole pad 46 and the auxiliary pad 47 is a contact portion with the surface of the magnetic disk 2. Two auxiliary pads 47 are provided so as to achieve a three-point contact state with the magnetic disk 2 in a triangular positional relationship with the magnetic pole pad 46 for stabilizing the positional relationship. You may provide three or more. When there are two magnetic pole pads, one auxiliary pad may be used. The diameter of the magnetic pole pad 46 and the auxiliary pad 47 is, for example, 20 μm, and the protruding height from the facing surface 45 is, for example, 3 μm. In the present specification, the position of the center of gravity of the plurality of pads in the magnetic head 7 refers to a position at which the pressing force applied to that position is evenly distributed to the plurality of contact pads. For example, in this example, the position is such that the magnetic pole pad 46 and the two auxiliary pads 47 are evenly distributed.

Assembling of the magnetic head 7 to the magnetic disk device having the above structure is carried out as follows. First, the contact pressure applying means 16 is connected to the head arm 4 by reference numeral 37 in FIG.
Stop at the locations indicated by. Next, the magnetic head 7
Is fixed to the head arm 4 at the position indicated by reference numeral 25. Thereby, the pressing portion 42 of the contact pressure applying means 16 comes into contact with the head mounting portion 20 as shown in FIG.
The pressing force is applied to the center-of-gravity positions of 46 and 47 (which may be near the center-of-gravity position as described later). By mounting the head arm 4 to which the magnetic head 7 is attached as described above at a predetermined position of the magnetic disk device as shown in FIG. 1, the magnetic pole pad 46 and the auxiliary pad 47 in the magnetic head 7 are made elastic of the support body 15. And the pressing force exerted from the contact pressure applying means 16 causes the magnetic disk 2
The surfaces 2a are brought into contact with each other with a predetermined uniform contact pressure. The place where the pressing portion 42 applies the pressing force is affected by the elasticity of the support body 15 (depending on the elasticity of the support body 15, the contact pads 46 for the surface 2a of the magnetic disk 2).
It is advisable to determine not only at the center of gravity position but also at a position in the vicinity thereof so that a uniform contact pressure is applied to each of the contact pads 46, 47 by canceling the deviation of the contact pressure of 47).

In the case of assembling the above magnetic head, the support 6
Are arranged as described above, even if there is an error in assembling the magnetic disk drive, the plurality of contact pads 46 and 47 of the magnetic head 7 contact the surface 2a of the magnetic disk 2 with an equal contact pressure. State. That is, even if there is an error in the height direction in the positional relationship of the head arm 4 with respect to the surface 2a of the magnetic disk 2 or an error in the inclination in the roll direction or the pitch direction, each of the flexible portions 28,
29 flexes to different degrees, respectively, according to the various error situations. As a result, the plurality of contact pads 46 and 47 in the magnetic head 7 are in a state of being evenly along the surface 2a of the magnetic disk 2. Since the pressing portion 42 of the contact pressure applying means 16 applies a pressing force to the position of the center of gravity or a position close to the position of the center of gravity, a slight variation occurs due to a manufacturing error or an assembly error, but the contact pads 46 and 47 are all substantially uniform. The magnetic disk 2 is brought into contact with the surface 2a by the contact pressure.

In the magnetic disk device having the above structure, the magnetic disk 2 rotates and a plurality of contact pads in the magnetic head 7 are provided.
46 and 47 slide on the surface 2a of the magnetic disk 2, and in the process, the magnetic pole pad 46 performs magnetic recording and reproduction on the magnetic disk 2. In this case, by making the support 15 hardly participate in the application of the contact pressure of the magnetic head 7 to the magnetic disk 2 (the elasticity of the support 15 minimizes the contact pressure applied to the contact pads 46, 47). It is possible to cause the magnetic disk 2 to travel stably (relative travel) without causing unnecessary vibration due to the magnetic head 7 sliding on the surface of the magnetic disk 2.

Next, FIG. 11 showing another embodiment of the support device.
And FIG. 12 is demonstrated. These figures show an example in which the support is provided with a member for lifting the magnetic head, and the operation of lifting and separating the magnetic head from the surface of the magnetic disk can be performed easily. It is intended. In the figure, 51 is a member for lifting operation attached to the arm portion 19e, which is formed integrally with the third layer of the arm portion 19e.

In such a structure, when the member 51 is lifted upward as shown by the arrow 51a, the arm portion 19e is lifted upward, and the arm portion 19e abuts on the horizontal portion 40e of the contact pressure applying means 16e. And lift it together. as a result,
The magnetic head 7e can be easily lifted from the surface of the magnetic disk. In addition, for the parts which are functionally the same as or equivalent to those in the previous figure and are considered to be redundant, the same reference numerals as those in the previous figure are appended with the letter e, and the redundant description is omitted. (Also in the following figures, alphabetical letters f and g are added in order based on the same idea, and duplicate explanations are omitted.)

FIGS. 13 to 16 show another embodiment of the supporting tool having a member for facilitating the operation of separating the head from the surface of the magnetic disk. In the figure, the contact pressure applying means in the supporting tool 6f
16 f is composed of a mounting portion 35 f, an elastic portion 52 having a spring property for applying a contact pressure, and an arm portion 53 having substantially no spring property. A member 51f for lifting operation is integrally provided at the tip of the arm portion 53, and a lifting piece 54 for lifting the arm portion 19f of the support 15f is provided at an intermediate portion. The contact pressure applying means 16f is the same as in FIG.
~ Similar to the support of the embodiment shown in Figure 10, the first layer 55
And a second layer made of an insulating material in which a third layer 56 is interposed between them.
It is formed in a structure in which the layers are integrally connected. But the elastic part
Only 52 is the first layer 55 in order to have sufficient flexibility and elasticity.
It is made of only. The mounting portion 35f is superposed on the mounting portion 18f of the support member 15f on its lower side (lower side of the first layer). Therefore, in order to prevent a short circuit between the pair of signal conductors in the mounting portion 18f, the third layer 56 overlapping with the signal conductor is divided at a portion 56a as shown in FIG. The lifting piece 54 is a signal conductor of the arms 19f of the support body 15f (first lowermost layer) when lifting the head.
Since the first layers 55 are in direct contact with each other, they are formed by the first layer 55 separated from each other at the portion 55a as shown in FIG. 16 so as not to short-circuit them.

In the structure described above, when the member 51f is lifted upward (in the front direction perpendicular to the paper surface in FIG. 13), the pressing portion 42f first separates from the head mounting portion 20f and the application of contact pressure to the magnetic head is released. Then, the lifting piece 54 lifts the arm 19f, which lifts the magnetic head.

Next, FIG. 17 shows a different embodiment of the contact pressure applying means, which is a pressing portion 42 for the head mounting portion 20g.
This is an example in which the arm portion 53g is provided with a reinforcing rib 58 in order to prevent the arm portion 53g from being twisted, which causes lateral displacement of the contact position of g. Although the rib 58 is illustrated as facing upward in the drawing, it may be facing downward.

[0027]

As described above, according to the invention of the present application, the support 15 for holding the magnetic head 7 is made of a soft magnetic head 7.
Since it has a structure for gripping, it is effective in expanding the allowable range of the assembly error and improving the assembly yield of the hard disk drive. When recording and reproducing on the surface 2a of the magnetic disk 2 by this, the magnetic pole pad 46 of the magnetic head 7 is brought into direct contact with the surface 2a of the magnetic disk 2, so that recording or reproduction can be performed with high sensitivity. There is an effect that can be done. Moreover, the magnetic head 7 is composed of three or more contact pads 46 and 47 including the magnetic pole pad 46.
Since the surface 2a of the magnetic disk 2 is brought into contact with the magnetic disk 2 at more than one place, even if there is such an error in the assembly of the magnetic disk device or the mounting of the support 6 to the head mounting base 4, the surface of the magnetic disk 2 is 2a against magnetic pole pad 46
Can be surely brought into contact with each other in a predetermined direction, and the above-described highly sensitive recording and reproduction can be stably performed.
Further, even if the three or more pads 46, 47 are brought into contact with each other as described above, the contact pressure of the three or more pads 46, 47 with respect to the surface of the magnetic disk 2 is not affected by the magnetic head 7. The support 15 made of an elastic material that supports the contact pressure applying means 16 for applying a pressing force to the center of gravity or the vicinity of the center of gravity of the three or more pads 46, 47 is applied. The above three or more pads 46, 47 can be brought into contact with the surface 2a of the magnetic disk 2 with an even contact pressure, and the uneven wear of the pads 46, 47 can be prevented to prolong the life of the magnetic head 7. There is an effect that can be used.

[Brief description of drawings]

FIG. 1 is a perspective view of a magnetic disk drive.

FIG. 2 is a plan view showing a support structure of the magnetic head.

FIG. 3 is an exploded plan view showing a head mounting base, a contact pressure applying means, and a support body side by side.

FIG. 4 is a perspective view showing a support for the magnetic head.

FIG. 5 is a bottom view of the magnetic head.

FIG. 6 is a side view of a contact pressure applying unit.

FIG. 7 is a side view of the support.

FIG. 8 is an enlarged sectional view taken along line VIII-VIII in FIG. 3;

FIG. 9 is an enlarged sectional view taken along line IX-IX in FIG. 3;

10 is an enlarged cross-sectional view taken along line XX in FIG.

FIG. 11 is a perspective view showing another embodiment of the tip portion of the support tool.

12 is a plan view of a tip portion of a support body in the support tool of FIG.

FIG. 13 is a plan view showing still another embodiment of the support tool.

FIG. 14 is a plan view of a support in the support shown in FIG.

15 is a plan view of the contact pressure applying means in the support shown in FIG.

16 is a plan view showing the form of the first layer in the contact pressure applying means of FIG.

FIG. 17 is a perspective view showing another different embodiment of the support tool.

[Explanation of symbols]

 2 magnetic disk 6 support 7 contact type magnetic head 15 support 16 contact pressure applying means 46, 47 contact pad

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Michio Kondo 3-27 Enwakacho, Minato-ku, Nagoya

Claims (1)

[Claims] 1. A contact type magnetic head having three or more contact pads each including at least one magnetic pole pad for making contact with a magnetic disk, is attached to the tip of a support, and the contact type magnetic head is attached. In a support structure of a contact type magnetic head in which a contact pad of the magnetic head is brought into contact with the surface of a magnetic disk, the support tool includes a support made of an elastic material for supporting the magnetic head, and And a contact pressure applying means adapted to apply a pressing force to the center of gravity of the contact pad or a position near the center of gravity of the contact pad. By the elasticity of the support and the contact pressure applying means, the three or more contact pads are provided. A support structure for a contact type magnetic head, characterized in that a contact pressure is applied to the surface of the magnetic disk.