JPH09320225A - Magnetic head device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a magnetic head device having strong resistance to the surface wobbling of a recording medium or external impacts and capable of performing accurate recording in the recording medium. SOLUTION: This device includes a slide-contact body 5 having a magnetic head element 4 disposed, being composed of a magnetic core and a bobbin having a coil attached thereto and slid on a recording medium, a head supporting body 6 for supporting this slide-contact body 5, a first elastic displacing part 7 for connecting the head supporting body 6 with a fixed part 3 and a second elastic distorting part 8 for connecting the slide-contact body 5 with the head supporting body 6. In this case, the first and second elastic distorting parts 7 and 8 are made of sheet metals, and roughly the center parts in a longitudinal direction are made narrow.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic head device used for a magneto-optical recording / reproducing apparatus using a magneto-optical recording medium such as a magneto-optical disk as a recording medium, and more particularly to a magneto-optical recording medium on which information signals are recorded. The present invention relates to a magnetic head device provided with a magnetic head that slides upward.

[0002]

2. Description of the Related Art Conventionally, a magneto-optical disk recording / reproducing apparatus using a magneto-optical disk having a magneto-optical recording layer made of a perpendicular magnetization film on a light-transmitting transparent substrate as a recording medium has been used.

In this magneto-optical disk recording / reproducing apparatus, an optical pickup device for emitting a light beam applied to a magneto-optical recording layer is disposed on one side of a magneto-optical disk rotated by a disk rotation drive mechanism. A magnetic head device for applying an external magnetic field to the magneto-optical recording layer is disposed on the other side of the magneto-optical disk.

A magneto-optical disk recording / reproducing apparatus applies a magnetic field whose direction is modulated in accordance with an information signal to be recorded from a magnetic head device to a magneto-optical recording layer of a rotating magneto-optical disk, A light beam emitted from the optical pickup device is focused and irradiated. Then, the portion that has been heated above the Curie temperature by irradiation with the light beam and has lost the coercive force is magnetized in accordance with the direction of the magnetic field applied from the magnetic head device, and then the light is rotated by the rotation of the magneto-optical disk. The relative movement of the beam causes the temperature to drop below the Curie temperature, so that the direction of the magnetization is fixed, thereby recording an information signal.

By the way, in the conventional magneto-optical disk recording / reproducing apparatus, when recording an information signal, a magnetic head is brought into contact and opposed to a magneto-optical disk which is rotated.

As shown in FIG. 17, a magnetic head device 200 equipped with this magnetic head comprises a sliding contact member 201, a head support member 202, a fixing portion 203, and an elastic member 204. A magnetic core and a bobbin 205 to which the magnetic core is attached and a coil are attached to the sliding contact body 201. Also,
The fixed portion 203 is connected to the head support body 202 via the first elastic displacement portion 206 to support the head support body 202. Further, the head support body 202 is connected to the sliding contact body 201 via the second elastic displacement portion 207 to support the sliding contact body 201.

That is, the elastic body 204 having the first elastic displacement portion 206 and the second elastic displacement portion 207 is integrally insert-molded together with the fixed portion 203, the head support 202 and the sliding contact body 201, Fixed part 20
3, the head support 202 and the sliding contact body 201 are connected. At the same time, the elastic body 204 is made of a conductive material to supply power to the magnetic head of the sliding contact body 201.

In the conventional magnetic head device 200 configured as described above, the first elastic displacement portion 206 has the second elastic displacement portion 206.
The elastic displacement portion 207 is formed in a thin plate shape such that the width thereof is narrower. Therefore, this magnetic head device 200
In the elastic body 204, the first elastic displacement portion 206 that connects the fixed portion 203 and the head support body 202 is wider than the second elastic displacement portion 207 that connects the head support body 202 and the sliding contact portion 201. It is narrow.

Here, the first elastic displacement portion 206 has an urging pressure for urging the sliding contact body 201 to the magneto-optical disk as a recording medium with a predetermined pressure. As a result, the first elastic displacement portion 206 can prevent the sliding contact body 201 from floating above the magneto-optical disk even if the magneto-optical disk that is rotated is subjected to surface wobbling or the like. is there.

On the other hand, the second elastic displacement portion 207
Even when the magneto-optical disk causes surface wobbling, the sliding contact body 201 is oscillated and displaced so as to follow a surface wobbling of the magneto-optical disk so as to have a constant sliding posture. Therefore, the elastic force of the second elastic displacement portion 207 is
It is smaller than the elastic force of the first elastic displacement portion 206.

[0011]

However, in the conventional magnetic head device 200, the first elastic displacement portion 206 is caused by the surface wobbling of the magneto-optical disk or an unexpected impact from the outside.
Further, a relatively large bending stress is applied to the second elastic displacement portion 207. Then, the conventional magnetic head device 2
At 00, the bending stress exceeds the elastic stress limit of the first elastic displacement portion 206 and the second elastic displacement portion 207. As a result, in the conventional magnetic head device 200, the first elastic displacement portion 206 and the second elastic displacement portion 207 are bent at the portions exceeding the elastic stress limit. In the magnetic head device 200, if the first elastic displacement portion 206 and the second elastic displacement portion 207 are bent, it becomes difficult to accurately position the sliding contact body 201 and the magneto-optical disk. Further, in these elastically displaced portions 206 and 207, once the elastic stress limit is exceeded, it was impossible to reproduce.

Therefore, the conventional magnetic head device 200
However, there is a problem that the magneto-optical disk is weak against surface wobbling and an unexpected impact from the outside, and when bending occurs at these elastic displacement portions, accurate recording cannot be performed on the magneto-optical disk.

The present invention has been made in view of the above problems, and it is possible to improve the limit of the elastic stress with respect to the bending stress of the first elastic displacement portion and the second elastic displacement portion, An object of the present invention is to provide a magnetic head device capable of accurately recording on a recording medium by making the magneto-optical disk strong against surface deflection and external impact.

[0014]

In the magnetic head device according to the present invention, which has achieved the above-mentioned object, a magnetic head element composed of a magnetic core and a bobbin to which a coil is attached is arranged to slide on a magneto-optical recording medium. A sliding contact body that contacts the sliding contact body and a head support body that supports the sliding contact body are provided. Also, the magnetic head device according to the present invention includes a first elastic displacement portion that connects the head support and the fixed portion, and a second elastic displacement portion that connects the slide contact body and the head support.

In the magnetic head device according to the present invention, the first elastically displacing portion and the second elastically displacing portion are thin plate-shaped, and the substantially central portion in the longitudinal direction is narrowed.

In the magnetic head device according to the present invention having the above-described structure, the first elastic displacement portion and the second elastic displacement portion are made to have a substantially central portion having a narrow width, so that the first elastic displacement portion has the first elastic displacement portion. The bending stress applied to the displacement portion and the second elastic displacement portion can be dispersed throughout. As a result, in this magnetic head device, the limit of the elastic stress with respect to the bending stress applied to the first elastic displacement portion and the second elastic displacement portion can be increased. On the other hand, in the case of the elastic displacement portion having a uniform width dimension, the bending stress is concentrated near the end of the elastic displacement portion. Then, at the location where the bending stress is concentrated, the limit of the elastic stress is exceeded, and bending occurs.

Further, in the magnetic head device according to the present invention, it is preferable that the outer side surfaces of the first elastic displacement portion and the second elastic displacement portion are flat surfaces.

In the magnetic head device according to the present invention configured as described above, the strength of the first elastic displacement portion and the second elastic displacement portion against twisting is improved.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of a magnetic head device according to the present invention will now be described in detail with reference to the drawings.

The magnetic head device according to the present invention is, for example,
It is used in a recording / reproducing apparatus for a magnetic recording medium such as a magneto-optical disk.

In this magneto-optical disk recording / reproducing apparatus, an optical pickup device for emitting a light beam for irradiating a magneto-optical recording layer is arranged opposite to one surface of a magneto-optical disk which is rotated by a disk rotation drive mechanism. On the other surface side of the magneto-optical disk, a magnetic head device 1 as shown in FIG. 1 for applying an external magnetic field to the magneto-optical recording layer is arranged so as to face it.

As shown in FIGS. 1 and 2, the magnetic head device 1 according to the present invention includes a pair of elongated conductive elastic members 2 and 2 which are arranged substantially parallel to each other. These elastic bodies 2 and 2 are formed by punching out a thin metal plate having conductivity such as phosphor bronze or BeCu. In particular, the elastic bodies 2 and 2 are formed of an age hardening material such as BeCu whose degree of hardening changes depending on the heat treatment time. By forming the elastic bodies 2 and 2 in the age hardening material, the elastic force of the elastic bodies 2 and 2 can be easily made to be a desired one.

Power supply terminals electrically connected to the coils of the magnetic head element mounted on the sliding contact body are provided on the tip end sides of these elastic bodies 2 and 2, and on the base end side thereof. As will be described later, a terminal portion that constitutes an external circuit connection portion to which an external connection cable that supplies power to the coil of the magnetic head element is connected is provided.

As shown in FIGS. 1 and 2, the magnetic head device 1 according to the present invention is mounted on the base end side of the pair of elastic bodies 2 and 2 so as to be mounted in the magneto-optical recording / reproducing apparatus. The fixing portion 3 for attaching to the base is integrally formed by insert molding a synthetic resin material. Further, a magnetic head element 4 including a magnetic core and a bobbin to which a coil is attached is attached to the tip ends of the pair of elastic bodies 2 and 2, and a sliding contact body 5 constituting a magnetic head 10 is made of a synthetic resin material. It is insert-molded and integrated. Further, the base portion provided with the fixing portion 3 of the pair of elastic bodies 2 and 2 and the sliding contact body 5
The head support body 6 is integrally provided by insert molding of a synthetic resin material between the head support body 6 and the end portion provided with.

By the way, the head support 6 has a part of the pair of elastic bodies 2 and 2 exposed to the outside with the fixed portion 3, and has a pair of elastic bodies 2 and 2 with the sliding contact body 5. It is integrally provided in the middle of the pair of elastic bodies 2 and 2 such that a part of 2 is exposed to the outside. Fixed part 3 of a pair of elastic bodies 2, 2
The portion exposed to the outside between the head support body 6 and the head support body 6 serves as a center of rotation when the head support body 6 including the slide contact body 5 is rotated in the direction of moving toward and away from the magneto-optical disk. The first elastic displacement portions 7, 7 are formed. Further, the portion of the pair of elastic bodies 2 and 2 facing outward between the sliding contact body 5 and the head support body 6 is a magneto-optical device where the sliding contact body 5 having the magnetic head element 4 mounted thereon is rotated. Second elastic displacement portions 8 and 8 elastically displaced so as to oscillate and follow the surface wobbling of the disk or the like.
Is made.

The portions of the pair of elastic bodies 2 and 2 forming the second elastic displacement portions 8 and 8 are narrower than the portions of the first elastic displacement portion 7 to form the first elastic displacement portion 7. It is formed so as to be easily elastically displaced by a slight load as compared with the elastic displacement portions 7, 7. That is, the first elastic displacement portion 7,
Reference numeral 7 is for applying an urging force to the head support 6 so that the sliding contact body 5 comes into sliding contact with the rotating magneto-optical disk with a constant sliding contact pressure. Even if surface wobbling or the like is caused, an elastic force sufficient to apply a biasing force to the head support 6 to such an extent that the sliding contact body 5 does not float above the magneto-optical disk is required.
On the other hand, the second elastically displacing portions 8 and 8 of the magneto-optical disk are not affected even when surface deviation or the like occurs in the magneto-optical disk in the state where the sliding contact body 5 is in sliding contact with the magneto-optical disk. Following the rotation, the sliding contact body 5 is oscillated and displaced so that the sliding contact posture is maintained in a constant state. Therefore, the elastic force of the second elastic displacement portions 8, 8 is smaller than the elastic force of the first elastic displacement portions 7, 7.

In the magnetic head device according to the present invention, the outer shapes of the first elastic displacement portions 7 and 7 and the second elastic displacement portions 8 and 8 described above are substantially centered in the longitudinal direction at the edges. On the other hand, it is configured to be narrow. That is, in the first elastic displacement portions 7, 7, the side surfaces 7A, 7A facing outward are flat surfaces, and the side surfaces 7B, 7B facing inward are arcuate curved surfaces. Also, in the second elastic displacement portions 8 and 8, the outer side surfaces 8A and 8A are flat surfaces, and the inner side surfaces 8B and 8B are arcuate curved surfaces.

Here, the sliding contact body 5, which is integrally provided on the tip side of the pair of elastic bodies 2 and 2, will be specifically described. As shown in FIGS. 3 and 4, the sliding contact body 5 includes a magnetic core 11 and
The magnetic head element 4 includes a bobbin 13 to which the coil 12 is attached, and an attachment portion 14 to which the magnetic head element 4 is attached. And this sliding contact body 5
When the magnetic head device 1 is attached to a magneto-optical recording / reproducing device to record an information signal on a magneto-optical disc, a magnetic head 10 is slidably contacted on one main surface of the magneto-optical disc that is rotated. To do.

As shown in FIG. 3, the magnetic head element 4 constituting the magnetic head 10 comprises a magnetic core 11 made of a magnetic material such as ferrite and a bobbin 13 around which a coil 12 is wound. Become. The magnetic core 11 has a central magnetic pole core 11a, a pair of side magnetic pole cores 11b and 11b provided on both sides of the central magnetic pole core 11a, and a coupling portion 11c that couples proximal ends of the magnetic pole cores 11a, 11b and 11b. The whole is formed in a substantially E shape.
The central magnetic pole core 11a of the magnetic core 11 is formed to be longer than the side magnetic pole cores 11b and 11b so that the tip portions thereof project from the tip portions of the side magnetic pole cores 11b and 11b.

The bobbin 13, which constitutes the magnetic head element 4 together with the magnetic core 11, is a material which is excellent in slidability and wear resistance, is lightweight, and is capable of obtaining high dimensional accuracy when molded. Sulfide (PPS), polyasole (POM), polyarylate (PAR), polyimide 6, polyamide 66, polyethylene terephthalate (PET), polybutylene terephthalate (PBT), ultra high molecular weight polyethylene (UHMW)
-PE), high molecular weight polyethylene (HMW-PE), and other synthetic resin materials are molded and formed.

As shown in FIGS. 3 to 7, the bobbin 13 is provided with a bobbin main body 16 having an insertion hole 15 in the center thereof, into which the center magnetic pole core 11a of the magnetic core 11 is inserted. The insertion hole 1 is provided on the outer peripheral side of the bobbin main body 16.
A coil winding portion 17 formed in a concave shape is provided so as to surround 5.

Further, in the magnetic head device 1 according to the present invention, the bobbin 13 is provided with the sliding contact portion 18 serving as a sliding contact surface with respect to the magneto-optical disk. The sliding contact portion 18 is located on the lower end side of the bobbin 13 (here, the magneto-optical disk side is referred to as the lower end side in this specification), and protrudes from one end of the bobbin 13. As shown in FIG. 7, when the magnetic head 10 is slidably contacted with the main surface of the magneto-optical disk of the sliding contact portion 18, the magnetic head 10 moves on the magneto-optical disk. An inclined surface 19a is provided on the side of the rotating direction. By providing this inclined surface 19a, it is possible to ensure a smooth sliding contact when the sliding contact surface 19 slides on the rotating magneto-optical disk and moves. Further, the sliding contact portion 18 is formed so that the sliding contact surface 19 is slightly protruded from the surface of the bobbin 13 facing the main surface of the magneto-optical disk, so that the sliding contact surface 19 surely contacts the main surface of the magneto-optical disk. Has been done.

Further, on the upper end side of the bobbin main body 18, as shown in FIGS. 5 and 6, a pair of support portions 20, 20 formed of a conductive material such as phosphor bronze are provided in a protruding manner. These supporting portions 20 and 20 are provided so as to be opposed to each other and parallel to each other in a direction orthogonal to the axial direction of the insertion hole 15. Then, the connection terminals 12a of the coil 12 wound around the coil winding portion 17 are wound around the supporting portions 20 and 20 several times and electrically connected by using a conductive adhesive or solder. Coil connection terminals 21 and 21 are formed.

By the way, the coil connection terminals 21 and 21 are
When the bobbin main body 16 is molded by a mold device, the bobbin main body 16 is placed in the mold and is supported by so-called insert molding.
Formed by 20.

The concave portion formed by a pair of convex portions 22, 22 protruding from the upper end side of the bobbin main body 16 so as to face each other is a fitting portion 23 of the magnetic core 11. Further, when the bobbin 13 is attached to the side surface of the upper portions of the convex portions 22 and 22 which faces the outer side so as to be fitted into the attachment hole 25 of the magnetic head element 4 provided in the attachment portion 14 described later, this attachment is performed. Engaging claw piece 2 serving as an engaging portion that relatively engages with an engaging step portion 26 serving as an engaged portion provided in the hole 25.
7, 27 are provided. These engaging claw pieces 27, 27
As shown in FIG. 7, is formed substantially parallel to the axial direction of the supporting portions 20 and 20 integrally provided on the bobbin 13, and has claw portions 27a and 27a protruding from one side on the tip side. This claw part 2
7a and 27a are formed in an acute angle which tapers toward the tip side.

Magnetic core 11 constituting the magnetic head element 4
The sliding contact body 5 to which the bobbin 13 is attached is made of a non-conductive synthetic resin material integrated with the elastic bodies 2 and 2, as shown in FIGS. 3, 4, 8, 9, 10, and 11. It is formed by insert molding, and has a mounting portion 14 for the magnetic head element 4 in the central portion.

In the mounting portion 14 provided on the sliding contact body 5,
A mounting hole 25 is provided so that the magnetic core 11 and the bobbin 13 are fitted to each other. This mounting hole 25
Is formed into a substantially cylindrical shape having an opening 25a on the surface side in sliding contact with the magneto-optical disk and an opening 25b on the surface side facing the opening 25a. The opening 25b is formed so that the opening edge 25c is formed around the opening 25b and is smaller than the opening 25. The opening 25b makes the upper end side of the magnetic core 11 inserted into the mounting hole 25 visible.

As shown in FIG. 8, the magnetic poles 11b, 11 provided on both sides of the magnetic core 11 inserted into the mounting hole 25 are provided on the surfaces of the mounting hole 25 which face each other in the longitudinal direction.
A pair of first and second holding pieces 30, 30 and 31, 31 for holding b are projectingly provided. These holding pieces 30, 3
0, 31, and 31 are provided so as to project from the surfaces of the mounting hole 25 that face each other in the longitudinal direction so as to face each other. The distance between the pair of holding pieces 30, 30 and 31, 31 is determined by the magnetic core 1
It is made narrower than the thickness of 1, and these holding pieces 30, 3
The side magnetic pole cores 11b and 11b of the magnetic core 11 inserted into 0 and 31, 31 are clamped and held.

Further, on the respective surfaces facing each other in the longitudinal direction orthogonal to the surface of the mounting hole 25 on which the first and second holding pieces 30, 30 and 31, 31 are provided, as shown in FIGS. Figure 1
As shown in FIG. 1, the engaging claw portions 27 of the engaging claw pieces 27, 27 provided on the bobbin 13 inserted into the mounting hole 25.
a and 27a are engaging stepped portions 2 which are engaged portions which are engaged with each other.
6, 26 are provided.

As shown in FIG. 9, these engaging step portions 26, 26 are formed on the surfaces of the mounting hole 25 which are opposed to each other in the longitudinal direction.
It is formed on the upper end surface portion of the elastic displacement pieces 33, 33 formed by forming U-shaped cut grooves 32, 32 from the upper surface side of the opening edge portion 25c of the mounting hole 25 to the middle portion. Become. That is, the engagement step portions 26, 26 are
The mounting holes 25 are formed by the cut grooves 32, 32 formed in the surfaces facing each other in the longitudinal direction, and are formed by a part of the cut grooves 32, 32.
The surfaces of the engaging stepped portions 26, 26 formed by a part of the cut grooves 32, 32 that engage with the engaging claw portions 27a, 27a are sharply angled surfaces corresponding to the engaging claw portions 27a, 27a. And a pair of convex portions 35, 3 which are made apart from each other in the longitudinal direction.
It consists of 5. The convex portions 35, 35 are formed with a high degree of horizontality with respect to the magneto-optical disk. Then, the pair of convex portions 35, 35 separated from each other in the longitudinal direction are the engaging claw portions 2.
By engaging with 7a and 27a, the bobbin 13 is mounted in the mounting hole 25 while maintaining a high level of horizontality with respect to the magneto-optical disk.

In order to form the engaging step portions 26, 26, the upper end side where the engaging step portions 26, 26 of the elastic displacement pieces 33, 33 formed by forming the cut grooves 32, 32 are formed. As shown in FIGS. 10 and 11, it is inclined so as to project inward of the mounting hole 25. The inclined surfaces of the elastic displacement pieces 33, 33 facing the relative body contact a part of the outer peripheral portion of the bobbin 13 inserted into the mounting hole 25, and guide the insertion direction and the insertion position of the bobbin 13. The insertion guide portions 34, 34 are formed.

Further, in the mounting hole 25, power supply terminals 36, 36 formed by bending the tip ends of a pair of conductive elastic bodies 2, 2 are provided in a protruding manner. These power supply terminals 3
Reference numerals 6 and 36 denote connection terminal portions 21 of the coil connection terminals 21 and 21 provided on the bobbin 13 inserted into the mounting hole 25.
It is for electrically contacting b and 21b to supply power to the coil 12 wound around the bobbin 13. When the bobbin 13 is mounted in the mounting hole 25, the power supply terminals 36, 36 are mounted on the bobbin 12 by connecting the coil connection terminals 21,
It is provided at a position where it can contact the connection terminal portions 21b and 21b of the second terminal 21, and as shown in FIG. 8, it is located on the side where the second holding pieces 31 and 31 project and is attached. The holes 25 project from the opposite side surfaces of the hole 25.

The power supply terminals 36, 36 formed by bending the tip ends of the pair of elastic bodies 2, 2 are shown in FIGS. 8, 10 and 1.
As shown in FIG. 2, bent portions 37, 37 protruding into the mounting hole 25 and elastically contacting the coil connection terminals 21, 21.
And mounting portions 38, 38 on which the sliding contact body 5 made of synthetic resin is insert-molded. This power supply terminal 3
The bent portions 37, 37 of 6, 36 are bent so as to bulge the central portion, and the bulged portions are used as electrical contact portions 37a, 37a for the coil connection terminals 21, 21. The bent portions 37, 37 are bent from one end of the mounting portions 38, 38 along the direction in which the bobbin 13 is inserted into the mounting hole 25.

The distance between the power supply terminals 36, 36 is
It is smaller than the distance between the coil connection terminals 21 and 21. As a result, the coil connection terminals 21 and 21 are electrically connected by pushing the contact portions 37a and 37a apart from each other. In addition, the power supply terminals 36, 36
8 has a substantially trapezoidal shape in which the tip end side is narrower than the base end side, as shown in FIG.

The mounting portions 38, 38 of the pair of power supply terminals 36, 36 project laterally in the vicinity of the center of gravity of the sliding contact body 5 and are continuous with the second elastic displacement portions 8, 8. Therefore, the sliding contact body 5 is supported near the center of gravity by the pair of elastic bodies 2 and 2.

By the way, the bent portions 37, 3 of the power supply terminals 36, 36 which come into contact with at least the coil connection terminals 21, 21.
7 is plated with any one of gold plating, nickel plating, and solder plating in order to reduce electric resistance at the time of contact. As a material used for the plating treatment, it is desirable to use a material having a smaller electric resistance than the power supply terminals 36, 36 in order to reduce the electric resistance at the time of contact.

Similarly, in order to reduce the electric resistance at the time of contact, the connection terminal portions 21b and 21b contacting the bent portions 37 and 37 of the coil connection terminals 21 and 21 are also gold-plated, nickel-plated, and solder-plated. It is desirable to perform any one of the treatments.

Further, as shown in FIGS. 4 and 8, the opening 25b of the mounting hole 25, that is, the top plate side of the sliding contact body 5, is connected to the connecting portion 11c of the magnetic core 11 mounted in the mounting hole 25. By contacting with each other, the biasing member 39 for adjusting the position of the magnetic core 11 with respect to the mounting hole 25 is bulged. The biasing member 39 is formed on the beam portion 40 formed on the opening edge portion 25 c of the mounting hole 25 and is substantially parallel to the connecting portion 11 c of the magnetic core 11 mounted on the mounting hole 25. The urging member 39 is provided with pressing portions 41 formed to project at both ends in the longitudinal direction. The biasing member 39 biases the magnetic core 11 toward the lower end side when the magnetic core 11 is mounted in the mounting hole 25 together with the bobbin 13. At this time, the urging member 39 is curved so that the connecting portion 11c is pressed toward the lower end side by the pressing portion 41, as shown in FIG.

Next, a process of assembling the magnetic head 10 configured as described above will be described, and further the assembled magnetic head 10 will be described.

To assemble the magnetic head 10, the magnetic core 11 is mounted in the mounting hole 25 of the sliding contact body 5. As shown in FIG. 3, the magnetic core 11 is inserted into the mounting hole 25 from an opening end 25a opened on the sliding contact surface side of the sliding contact body 5 to the magneto-optical disk, with the connecting portion 11c side as an insertion end. . The magnetic core 11 inserted into the mounting hole 25 has first and second holding pieces 3 on both sides on the side magnetic pole cores 11b and 11b side.
By being fitted between 0, 30 and 31, 31, it is held by these holding pieces 30, 30 and 31, 31 and temporarily fixed in the mounting hole 25. At this time, the magnetic core 11
Is a pressing portion 40 of the biasing member 39 on the upper surface of the connecting portion 11c.
40 is abutted, and the position of the insertion hole 25 in the insertion direction is regulated.

Then, the bobbin 13 around which the coil 12 is wound is inserted into the mounting hole 25 in which the magnetic core 11 is arranged. In the bobbin 13, the side on which the engaging claw pieces 27, 27 project is made to correspond to the surface of the mounting hole 25 on which the engaging step portions 26, 26 are provided, and the connecting terminal portions 21b of the coil connecting terminals 21, 21 are 21b is made to correspond to the power supply terminals 36, 36 projectingly provided in the mounting hole 25, and the mounting hole 2 from the opening end 25a.
5 is inserted. At this time, the insertion hole 15 of the bobbin 13
The central magnetic pole core 11a of the magnetic core 11 is inserted into the. Further, when the bobbin 13 is inserted into the mounting hole 25, the bobbin 13 is coiled on the insertion guide portions 34, 34 formed on the opposite surfaces of the elastic displacement pieces 33, 33 protruding into the mounting hole 25. The outer surface on the side where the connection terminals 21 and 21 are attached is brought into sliding contact and inserted into the attachment hole 25. At this time, the bobbin 13 has the insertion guide portions 34, 34.
By being guided by the outer surface thereof into the mounting hole 25, the insertion direction into the mounting hole 25 is regulated. Therefore, the bobbin 13 is inserted into the mounting hole 25 by accurately inserting the central magnetic pole core 11 a of the magnetic core 11 which is temporarily fixed in the mounting hole 25 into the insertion hole 15.

When the bobbin 13 is inserted into the mounting hole 25, the engaging claw pieces 27, 27 elastically displace the elastic displacement pieces 33, 33 to the outside of the mounting hole 25. From here, when the bobbin 13 is further inserted and is inserted until the insertion end side contacts the opening edge portion 25c of the mounting hole 25, the engaging claws 27a, 27a at the tips of the engaging claw pieces 27, 27 are inserted.
Reaches the engaging stepped portions 26, 26 formed at the tips of the elastic displacement pieces 33, 33, and the elastic displacement pieces 33, 33 elastically return to the engaging claw portions 27a, 27a, as shown in FIG.
The relative engagement between 27a and the engagement step portions 26, 26 is realized.

Further, at this time, the engaging claw portions 27a, 27
a and the engaging step portions 26, 26 are a pair of convex portions 35, 35.
The horizontal degree of the bobbin 13 is defined by the pair of convex portions 35, 35 because they are relatively engaged with each other. Since the horizontality of the pair of convex portions 35 is defined very accurately,
The bobbin 13 can be held highly horizontally with respect to the magneto-optical disk.

Furthermore, when the bobbin 13 is mounted in the mounting hole 25, the connection terminal portions 21b, 21b of the coil connection terminals 21, 21 are pressed against the power supply terminals 36, 36 protruding into the mounting hole 25 to generate electric power. Connection is achieved. These power supply terminals 36, 36 have elastic mounting holes 25.
The bent portions 37, 37 that largely project inward are connected to the connection terminal portion 21.
Since it comes into contact with b and 21b, the connection terminal portions 21b and 2
By making pressure contact with the elastic force applied to 1b, reliable electrical contact is realized.

Further, the power supply terminals 36, 36 are formed so that the width of the tip end side is narrower than that of the base end side.
Therefore, at the power supply terminals 36, 36, the coil connection terminal 2
When pressed by the Nos. 1 and 21 in the direction in which they are separated from each other, the applied elastic stress is evenly distributed over the whole. Therefore, at the power supply terminals 36, 36, the coil connection terminals 21, 2 are connected.
It is possible to set the limit of the elastic stress due to 1 relatively large. As a result, the coil connection terminal 21 is formed by winding the connection terminal 12a of the coil 12 several times and using a conductive adhesive or solder to electrically connect the connection terminal 12a.
Even if the volume of b becomes large, the power supply terminal 36 is not broken.

Magnetic head 1 assembled as described above
0 is a bobbin 1 in which a magnetic core 11 and a coil 12 are wound.
3 is inserted into the mounting hole 25 one by one, and the magnetic core 11 and the bobbin 13 do not need to use an adhesive agent to fix the magnetic core 11 and the bobbin 13 to each other.

Further, the connection between the coil connection terminals 21 and 21 provided on the bobbin 13 and the power supply terminals 36 and 36 does not require solder or the like. Therefore, the assembling work of the magnetic head 10 becomes extremely simple.

The head support 6 which supports the magnetic head 10 configured as described above on the tip side via the second elastic displacement portions 8 and 8 is made of synthetic resin across the pair of elastic bodies 2 and 2. Is formed by insert molding. The head support 6 is formed by insert molding synthetic resin between the pair of elastic bodies 2 and 2 so as to fix the mutual positions of the pair of elastic bodies 2 and 2 and to form the elastic bodies 2 , 2 to provide rigidity to support the sliding contact body 5 constituting the magnetic head 10 attached to the tips of the elastic bodies 2 and 2 so as to be rotatable and displaceable around the second elastic displacement portions 8 and 8. Is. As shown in FIGS. 1 and 2, a rear end portion 41 of the sliding contact body 5 is provided on the side of the head supporting body 6 on which the sliding contact body 5 is supported.
A concave portion 42 facing the side is formed. The sliding contact body 5 is the second
When the elastically displacing portions 8 and 8 are pivotally displaced, the rear end portion 41 side is pivotally displaced so as to enter the recess 42 of the head support 6.

Further, as shown in FIGS. 1 and 2, on one side of the base end side of the head support 6 located on the fixed portion 3 side, as shown in FIGS.
A connecting arm 43 is provided so as to extend toward the fixed portion 6, and a weight body 44 is provided on the tip end side of the connecting arm 43. In the weight body 44, the center of gravity of the head support body 6 supported by the fixed portion 3 via the first elastic displacement portions 7, 7 formed by a part of the pair of elastic bodies 2, 2 has the first elasticity. It is provided so as to be located substantially in the vicinity of the displacement portions 7, 7, and the head support 6 is extended on one side with the first elastic displacement portions 7, 7 as a center and is attached to the tip on the other side. The connecting arm 43 provided with the weight body 44 is extended. Therefore, the weight body 44 is provided at a position closer to the fixed portion 3 side than the first elastic displacement portions 7, 7.

In the present embodiment, the weight portion 44
Is integrated with the head support 6 together with the connecting arm 43,
Although it is formed of the same synthetic resin material as that of the head support 6, it may be formed of a metal material having a large specific gravity in order to earn a large weight in a small volume. The weight body 44 made of the metal material is integrally attached by being inserted into the connecting arm 43 when the connecting arm 43 made of synthetic resin is molded. Further, the weight body 44 may be formed by embedding a metal material having a large specific gravity in a synthetic resin body integrally molded with the connecting arm 43.

The weight body 44 extended via the connecting arm 43 to the other side opposite to the one side on which the head support 6 extends with the first elastic displacement portions 7 and 7 as the center,
It also functions as a rotating operation unit for rotating the head support 6 around the elastic displacement portions 7, 7. That is, by pressing the weight body 44, the first elastic displacement portions 7, 7 are elastically displaced, and the head support body 6 is rotated around the first elastic displacement portions 7, 7. It

Further, the fixed portion 3 provided on the base end side of the pair of elastic bodies 2 and 2 extends in the radial direction of the magneto-optical disk in synchronization with the optical pickup device arranged in the magneto-optical recording / reproducing apparatus. A fixing member insertion hole 46 for fixing and supporting the magnetic head device 1 on a moving mounting base and having a central member through which a fixing member such as a fixing screw fixed to the mounting base is inserted. Has been done.

As shown in FIGS. 13 and 14, the magnetic head device 1 having the above-mentioned structure is provided with an optical pickup device 51 and is a movable base mounted movably in the magneto-optical recording / reproducing device. It is attached to the base 52 and is attached so as to move in synchronization with the optical pickup device 51.

The movable base 52 to which the magnetic head device 1 and the optical pickup device 51 are attached is provided at a midway portion of a slide guide shaft 54 attached to a chassis substrate 53 to which a mechanical portion such as a disk rotation drive mechanism is attached. By inserting the through hole 55 and supporting a slide guide portion 58 provided on one side of the chassis substrate 53 by a pair of upper and lower engaging pieces 56 and 57 projecting at one end side, the magneto-optical recording / reproducing apparatus is installed. Mounted disc cartridge 5
It is movably supported in the radial direction of the magneto-optical disk 60 housed in 9. The moving base 52 is moved and operated in the radial direction of the magneto-optical disk 60 via a pickup feeding mechanism driven by a drive motor (not shown).

In the optical pickup device 51, the objective lens for condensing and irradiating the light beam emitted from the light source on the signal recording layer of the magneto-optical disc 60 is opposed to the magneto-optical disc 60 so as to face the movable base 52. It is attached to the tip side of. At this time, the optical pickup device 51 is attached to the movable base 52 so that the optical axis of the objective lens is located on the center line of the magneto-optical disk 60.

On the other end side of the movable base 52 opposite to the one end side where the optical pickup device 51 is mounted, a mounting base 61 of the magnetic head device 1 is formed upright. As shown in FIGS. 13 and 14, the mounting base 61 is formed upright along one side of the disc cartridge 59 mounted in the cartridge mounting portion in the magneto-optical recording / reproducing apparatus. Then, in the magnetic head device 1, the head support body 6 is extended above the disk cartridge 59 mounted in the cartridge mounting portion so that the fixed portion 3 is fixed to the upper end portion of the mounting base 61 to move the movable base. It is attached to 52. That is, the magnetic head device 1 is mounted on the mounting base 61 by engaging the not-shown engaging holes and engaging recesses provided on the bottom surface of the fixing portion 3 with the positioning pins protruding from the upper end surface of the mounting base 61. It is mounted on the mounting base 61 by a fixing screw which is positioned and is inserted into the fixing member insertion hole 46 and screwed into the mounting base 61.

When the magnetic head device 1 is mounted on the mounting base 61, the magnetic head device 1 is mounted on the sliding contact body 5 supported at the tip of the head support body 6 via the second elastic displacement portions 8, 8. The central magnetic pole 11a of the magnetic pole core 11 forming the magnetic head element 4 is opposed to the objective lens of the optical pickup device 51 with the magneto-optical disk 60 interposed therebetween. That is, the external magnetic field is applied to the irradiation position of the light beam on the magneto-optical disk 60.

In the magnetic head device 1 mounted on the mounting base 61, the movable base 52 is driven by the pickup feeding mechanism, so that the optical pickup device 5
It is fed and operated in the radial direction of the magneto-optical disk 60 together with the unit 1. The moving direction of the magnetic head device 1 with respect to the magneto-optical disk 60 is orthogonal to the longitudinal direction of the head support 6.

By the way, since the magnetic head device 1 and the optical pickup device 51 are opposed to each other with the magneto-optical disk 60 interposed therebetween, as shown in FIGS. 13 and 14, the magnetic head device 1 and the optical pickup device 51. Between
A space is required for loading and unloading the disk cartridge 59 mounted in the cartridge mounting portion. Therefore, the fixing portion 3 and the mounting base 61 of the magnetic head device ₁ are formed at a height H ₁ sufficient to hold a space for loading and unloading the disk cartridge 59.

Further, the fixing portion 3 having a height H ₁ for holding a space for loading / unloading the disc cartridge 59.
As shown in FIG. 13, the head supporting member 6 extended from above to the disk cartridge 59 via the first elastically displacing portions 7 and 7 has the sliding contact member 5 supported at the tip thereof attached to the cartridge mounting portion. In order to make sliding contact with the magneto-optical disk 60,
The sliding contact body 5 from the side of the connecting portion 6a connected to the first elastic displacement portions 7, 7.
Is formed so as to be inclined toward the tip end side supporting the.

Then, in the head support 6, the sliding contact body 5 supported on the front end side is inserted into the disk cartridge 59 and slidably contacts the magneto-optical disk 60 in a state where the weight body 44 is not pressed. The sliding contact body 5 is a magneto-optical disk 6
When it is in sliding contact with 0, the first elastic displacement portion 7,
7 is elastically displaced to move the head support 6 to the magneto-optical disk 60.
It gives a biasing force to the side. Therefore, the sliding contact body 5
Are brought into sliding contact with the magneto-optical disk 60 with a predetermined sliding contact pressure.

By the way, the head support 6 separates the sliding contact body 5 from the inside of the disk cartridge 59 when the disk cartridge 59 mounted in the cartridge mounting portion is mounted or dismounted, and the head support 6 and the optical pickup device 51 are connected to each other. The first elastic displacement portion 7 is rotated around the first elastic displacement portion 7 so as to form a sufficient space for mounting and dismounting 59.

Therefore, in the magneto-optical recording / reproducing apparatus to which the magnetic head device 1 is attached, as shown in FIG.
A head rotation operation mechanism (not shown) for pressing the weight body 44 to rotate the head support 6 in the direction away from the disk cartridge 59 side about the first elastic displacement portions 7, 7. Is provided.

By the way, when the head supporting member 6 is rotated by the head rotating operation mechanism, as shown in FIG. 14, the magneto-optical disk 1 mounted in the cartridge mounting portion.
00 to a horizontal position parallel to the chassis substrate 53 in the magneto-optical recording / reproducing apparatus.

The magnetic head device 1 includes a head support 6
Magneto-optical disc 60 mounted in the cartridge mounting portion
The slide contact body 5 supported at the tip of the head support body 6 is rotated to a horizontal position parallel to the chassis substrate 53 in the magneto-optical recording / reproducing apparatus, which is a position substantially parallel to the head support body 6.
Therefore, a space for inserting / removing a sufficiently large disk cartridge 59 can be formed between the head support 6 and the optical pickup device 51.

By the way, in the sliding contact member 5 to which the magnetic head element 4 is attached, the head support member 6 has the first elastic displacement portion 7,
In a natural state in which the optical disc is not rotated about 7, the sliding contact surface of the sliding contact portion 18 slidingly contacting the magneto-optical disk 60 is substantially horizontal to the main surface of the magneto-optical disk 60, as shown in FIGS. In this manner, both sides in the vicinity of the position of the center of gravity are supported by the second elastic displacement portions 8 and 8 and attached to the head support 6. Therefore, from the state in which the head support body 6 is rotationally displaced about the first elastic displacement portions 7, 7,
When the elastic displacement portions 7, 7 are elastically displaced toward the magneto-optical disk 60 side due to the elastic return force of the elastic displacement portions 7, 7,
The sliding contact surface 19 of No. 8 is brought into horizontal contact with the main surface of the magneto-optical disk 60. In particular, the sliding contact body 5 is the magneto-optical disk 60.
By making a sliding contact with the magnetic head element 4 horizontally, the sliding contact surface 19 of the sliding contact portion 18 protruding from the tip of the magnetic head element 4 can be surely brought into contact with the magneto-optical disk 60 before other portions. Therefore, the sliding contact body 5 is the magneto-optical disk 60.
It is possible to surely prevent a part of the magnetic head element 4 or the like from coming into contact with the magneto-optical disc 60 when it comes into sliding contact with the magneto-optical disc 60 and damaging the magneto-optical disc 60.

Since the sliding contact body 5 is supported by the second elastic displacement portions 8 on both sides in the vicinity of the center of gravity,
The magneto-optical disk 60 that is rotated can be brought into sliding contact with the magneto-optical disk 60 in a stable state. For example, even when the main surface of the magneto-optical disk 60 has irregularities and the irregularities cause the sliding contact body 5 to be oscillated and displaced about the second elastic displacement portions 8 and 8, large vibration is generated. It becomes possible to make sliding contact with the magneto-optical disk 60 in a stable state without the need. Further, even if the surface wobbling occurs when the magneto-optical disk 100 is rotated, the sliding contact body 5 follows the surface wobbling of the magneto-optical disk 60 and is centered on the second elastic displacement portions 8, 8. It is possible to make slidable displacement with respect to the magneto-optical disk 60 in a stable state without causing unnecessary vibration.

Further, the sliding contact body 5 of the magnetic head device 1
Is supported by the second elastic displacement portions 8 on both sides in the vicinity of the center of gravity, and the sliding contact portion 18 with respect to the magneto-optical disk 60 is moved to the second elastic displacement portion as shown in FIGS. The head support 6 is supported by the tip end side of the head support 6 by being positioned closer to the fixed portion 3 side, which is the first elastic displacement portion 7, 7 side that applies a biasing force to the head support 6, than the position of the portions 8 and 8. .

When the magnetic head device 1 receives an unexpected impact from the outside, the first elastic displacement parts 7, 7 and the second elastic displacement parts 7, 7
A relatively large bending stress is applied to the elastic displacement portions 8, 8. In the magnetic head device 1 according to the present invention, the limit of elastic stress is set to be large with respect to this relatively large bending stress. That is, the first elastic displacement portions 7 and 7 and the second elastic displacement portions 8 and 8 have a substantially central portion that is narrower than the edge portion so that the elastic stress is uniformly dispersed over the entire area. can do. Thereby, in the magnetic head device 1 according to the present invention, the limit of the elastic force with respect to the bending stress applied to the first elastic displacement portions 7, 7 and the second elastic displacement portions 8, 8 can be increased. it can. Therefore,
The first elastic displacement parts 7, 7 and the second elastic displacement parts 8,
No. 8 is always in a state of having elastic stress without being bent or the like due to an external impact or the like.

Further, in the first elastic displacement portions 7, 7, the outer side surfaces 7A, 7A are flat surfaces, and the inner side surfaces 7B, 7B are arcuate curved surfaces. Also, in the second elastic displacement portions 8 and 8, the outer side surfaces 8A and 8A are flat surfaces, and the inner side surfaces 8B and 8B are arcuate curved surfaces. Accordingly, the first elastic displacement portions 7, 7 and the second elastic displacement portions 8, 8 are fixed to the fixed portion 3 and the head support member 6.
And, the stress against the external force in the twisting direction generated between the sliding contact bodies 5 can be improved.

Further, as shown in FIGS. 1 and 15, the fixing portion 3 electrically connects the magnetic head element 4 attached to the sliding contact body 5 supported on the tip side of the head support body 6 and an external circuit. There is provided an external circuit connecting portion 115 to which a flat-plate-like connecting cable 114 such as a flexible printed wiring board or a flexible flat cable for connecting to is connected. The external circuit connecting portion 115 has a terminal portion supporting piece 116 protrudingly provided on the base end side of the fixing portion 3, and the base end portions of the pair of elastic bodies 2 and 2 are provided on one main surface of the terminal portion supporting piece 116. The terminal portions 117, 117 formed on the side of the section are extended. These terminal parts 117 and 117 are connected to the power supply terminals 36 and 3 respectively.
A pair of elastic bodies 2 and 2 electrically connected to the coil 13 of the magnetic head element 4 via 6 are formed by forming a substantially U-shaped cut with a tapered tip, The elastic members 2 and 2 are elastically displaceable with the side of the connecting portion as a fulcrum. In addition, the terminal parts 117 and 117 are
It is bent so as to project above the terminal portion support piece 116, and a bent portion 117a is formed on the tip side. Therefore, in the terminal portions 117 and 117, when the bending portion 117 a protruding above the terminal portion supporting piece 116 is pressed, the elastic bodies 2 and 117 are pressed.
2 is elastically displaced toward the terminal portion supporting piece 116 side with the side of the connecting portion to 2 as a fulcrum.

The terminal portion support piece 116 includes terminal portions 117,
When the terminal 117 is elastically displaced, these terminal portions 117,
A notch hole is provided for allowing the tip side of 117 to enter.

On both sides of the terminal portion supporting piece 116 facing each other, the terminal portion 11 is jointly worked with the terminal portion supporting piece 116.
A pair of connection cable support pieces 119 and 119 forming an insertion groove 118 for inserting the connection cable 114 electrically connected to the connection terminals 7 and 117 are provided. As shown in FIG. 16, the connection cable support pieces 119 and 119 are formed so as to project from the fixing portion 3 onto the terminal portion support piece 116, and together with the terminal portion support piece 116, the insertion groove 11 is formed.
8 forming. In addition, the connection cable support piece 119,
As shown in FIG. 16, on the lower surface side of the terminal portion supporting piece 116 of the terminal portion 119, as shown in FIG. 121 is projected.

Then, the connection cable 114 is inserted into the insertion groove 118 from the front end side so that the connection cable 114 is held between the terminal portion support piece 116 and the connection cable support pieces 119 and 119 and is connected to the external circuit connection portion 115. Connected. At this time, the connection cable 114 is bent and deformed, and the terminal portions 117 and 117 that extend on the terminal portion support piece 116 extend.
The connection pattern part is pressed against. The connection cable 114 is electrically connected to the pair of elastic bodies 2 and 2 by pressing the connection pattern against the terminal portions 117 and 117. Then, the coil 12 of the magnetic head element 4 is electrically connected to the external circuit via the connection cable 114 and the pair of elastic bodies 2 and 2, and the power is supplied from the external circuit.

By the way, the power supply terminals 36, 36 and the terminal portions 117, 117 formed on the pair of elastic bodies 2, 2 are
Either gold plating, nickel plating, or solder plating is applied. By performing such a plating process, the contact resistance of the power supply terminals 36, 36 and the terminal portions 117, 117 is reduced, and good electrical contact is realized.

Further, as shown in FIG. 1, on the upper surface side of the fixed portion 3, a part of the elastic bodies 2 and 2 embedded in the fixed portion 3 is exposed to the outside and penetrates the first portion. Through hole 1
21 and 121 are drilled. In addition, the head support 6
Second through holes 122, 122 are also formed on the upper surface side of the elastic body 2, 2 so as to partially expose the elastic bodies 2, 2 to the outside and penetrate the second elastic body 2, 2. These first through holes 121,1 of the elastic bodies 2,2
21 and the portions exposed to the second through holes 122, 122 of the inspection tool for inspecting the connection state between the elastic members 2, 2 and the coil 33 of the magnetic head element 4 and the electrical characteristics of the magnetic head element 4. Made as a contact part.

These first through holes 121, 121 and second
Since the through holes 122, 122 are formed so as to penetrate therethrough, the contact area with the inspection tool becomes large. This allows
In the magnetic head device 1, the first through holes 121,
It is possible to prevent the occurrence of a short circuit or the like due to poor electrical contact between the 121 and the second through holes 122, 122. Also,
The first through holes 121 and 121 and the second through hole 12
Reference numerals 2 and 122 also serve as insertion holes into which positioning members are inserted during insert molding. Thereby, in this magnetic head device 1, when the elastic bodies 2 and 2 are insert-molded together with the fixed portion 3, the sliding contact body 5 and the head support body 6, the elastic bodies 2 and 2 can be accurately positioned, and the yield is improved. Can be improved.

Further, the parts forming the first elastic displacement parts 7, 7 and the second elastic displacement parts 8, 8 facing the outside of the pair of elastic members 2, 2 are also gold-plated, nickel-plated,
By performing any one of the solder plating treatments, it is possible to prevent rusting of these portions.

[0089]

As described above in detail, in the magnetic head device according to the present invention, the first elastic displacement portion and the second elastic displacement portion are made narrower at their substantially central portions compared to the end portions. Become. Therefore, in this magnetic head device, an external force such as a bending stress applied by a surface wobbling of the recording medium or an unexpected impact from the outside is uniformly applied to the entire first elastic displacement portion and the second elastic displacement portion. Distributed. As a result, in this magnetic head device, the first elastic displacement portion and the second elastic displacement portion do not exceed the limit of elastic stress, and bending occurs in the first elastic displacement portion and the second elastic displacement portion. There is nothing to do. Therefore, the magnetic head device according to the present invention is the first
The elastically displacing portion and the second elastically displacing portion maintain a high degree of flatness, and the sliding contact body always slides in good contact with the recording medium. With this, the magnetic head device according to the present invention can accurately record a signal on the recording medium.

[Brief description of drawings]

FIG. 1 is a top view of a magnetic head device according to the present invention.

FIG. 2 is a side view of the magnetic head device.

FIG. 3 is an exploded side view for explaining the configuration of a sliding contact body.

FIG. 4 is a vertical sectional view of a sliding contact body.

FIG. 5 is a top view of a bobbin around which a coil forming a sliding contact body is wound.

6 is a side view of the bobbin shown in FIG.

FIG. 7 is a front view of the bobbin shown in FIG.

FIG. 8 is a top view of a mounting portion that constitutes a sliding contact body.

9 is a side view of the mounting portion shown in FIG.

10 is a vertical cross-sectional view of the mounting portion shown in FIG.

11 is a vertical cross-sectional view of the attachment portion shown in FIG.

FIG. 12 is a vertical cross-sectional view of a magnetic head.

FIG. 13 is a longitudinal sectional view of a main part of a recording medium recording / reproducing apparatus showing a state where a sliding contact body of the magnetic head device according to the present invention is in sliding contact with a recording medium.

FIG. 14 is a longitudinal cross-sectional view of a main part of a recording medium recording / reproducing apparatus showing a state in which the sliding contact body of the magnetic head device according to the present invention is separated from the recording medium.

FIG. 15 is a perspective view showing an external circuit connection unit provided in the fixing unit.

FIG. 16 is a cross-sectional view of an external circuit connection portion.

FIG. 17 is a perspective view of a conventional magnetic head device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 magnetic head device, 2 elastic body, 3 fixed part, 4 magnetic head element, 5 sliding contact body, 6 head support body, 7 1st elastic displacement part, 8 2nd elastic displacement part, 10 magnetic head, 11 magnetic Core, 13 bobbins

Claims (4)

[Claims] 1. A slidable contact body, in which a magnetic head element having a bobbin to which a coil is attached and a magnetic core is disposed, slidably contacting on a magneto-optical recording medium, a head support body supporting the slidable contact body, and the head A first elastic displacement portion that connects the support and the fixed portion, and a second elastic displacement portion that connects the slide contact body and the head support are provided, and the first elastic displacement portion and the first elastic displacement portion. The second elastically displacing portion is a thin plate shape, and has a narrow width at a substantially central portion in the longitudinal direction. 2. The first elastic displacement portion and the second elastic displacement portion are integrally formed by insert molding together with the fixed portion, the sliding contact body, and the head support body. The magnetic head device according to claim 1. 3. The magnetic head device according to claim 1, wherein the first elastic displacement portion and the second elastic displacement portion have flat side surfaces facing outward. 4. A first opening penetrating the first elastic displacement portion and the fixed portion and / or a second opening penetrating the first elastic displacement portion and the head support. The magnetic head device according to claim 1, wherein the magnetic head device is formed by drilling.