JPS62277676A - Attachment structure for magnetic head - Google Patents

Abstract

PURPOSE:To improve the attachment accuracy of a magnetic head by inserting a pin having a flange into a through-hole of a head carriage, increasing the thickness of a 1st adhesion layer set between the flange and the head carriage compared with a 2nd adhesion layer set between the pin tip and a plate and adhering the plate to the head carriage. CONSTITUTION:A slit 202 is formed on a head carriage 42 and a pin 200 having a flange is put into the slit 202 from the lower side to adhere the fringe and the tip part of the flange are adhered to the carriage 42 and a base plate 64 respectively. The length l of the pin 200 is larger than the distance (h) between the bottom surfaces of the plate 64 and the carriage 42. Therefore, an adhesion layer (a) formed on the tip part of the pin 200 is thinner than an adhesion layer (b) of the flange. Then the layer (b) has a larger shrinkage value of curing than the layer (a) and therefore the plate 64 receives the upper force owing to the curing of an adhesive 208. As a result, the position change of a head attachment plate due to the shrinkage caused by the curing of adhesion layers can be reduced and therefore, the attachment accuracy of a magnetic head is improved.

Description

[Detailed Description of the Invention] 3. Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a mounting structure for a magnetic head, and particularly to a mounting structure for a magnetic head used in a magnetic recording or reproducing device such as an electronic camera. Regarding.

[Background of the invention]

Recently, subjects have been photographed purely electronically by combining imaging devices such as solid-state imaging devices and image pickup tubes with recording devices that use magnetic sheets that are inexpensive and have a relatively large storage capacity as recording media. An electronic camera system has been developed that records images on a sheet and reproduces the images using a separate television recording system or printer.

By the way, this type of magnetic sheet used in electronic cameras and the like differs from the magnetic sheet used in general magnetic recording and reproducing devices, in that it records still images or video information at high density, and rotates at high speed. . Therefore, magnetic heads that contact a magnetic sheet to record on or read from a magnetic sheet require accurate alignment and adjustment with respect to the magnetic sheet, so they are used in electronic cameras, etc. The magnetic head used for recording or reproducing image information, etc. has three characteristics: ■Protrusion amount, ■Tilt angle, ■
Five adjustments are required: center shift, ■ azimuth shift, and ■ tilt. Of these, (2) tilt angle and (2) tilt, if they are minute, can be dealt with only by head aging without adjustment. Figures 1 to 3 below
These five adjustments will be sequentially explained according to the diagram.

In FIG. 1, lO is a magnetic sheet, 12 is a magnetic head for recording or reproducing information on this magnetic sheet 10, and 14 is
is a regulating plate that is provided at a position facing the magnetic throat 12 with the magnetic sheet 10 in between, and aligns the magnetic sheet IO along the magnetic head 12.

The magnetic head 12 requires a protrusion amount Ea within a predetermined range with respect to the magnetic sheet 10, and precise adjustment is required in order to perform better recording and reproduction and prevent wear of the magnetic head and recording medium. be.

In addition, in order to obtain good reproduced images even when the same recording medium is loaded into different playback machines, the recording head and playback head are separated, as in the case where the recorder and playback machine are configured separately. When using a magnetic head, the inclination angle θa as shown in FIG. 1, the amount of deviation Eb of the magnetic head 12 from the center of the magnetic sheet 10 and the azimuth deviation θb shown in FIG.
Furthermore, as shown in FIG. 3, the tilt angle θC of the magnetic head with respect to the magnetic sheath 10 must be within a predetermined compatible range.

Incidentally, in a conventional magnetic head mounting structure, an L-shaped head mounting plate to which a magnetic head is fixed in advance is mounted on a head carriage via a plurality of adjusting plates with an adhesive and a plurality of screws. However, since the head mounting plate and head carriage are in surface contact, the thickness of the adhesive layer is 100 μm.
If the temperature exceeds that level, the head may become misaligned due to temperature changes or changes due to shrinkage during curing. Therefore, in the conventional magnetic head mounting structure, the height of the head mounting plate is adjusted by interposing a plurality of shims of different thicknesses on the head carriage, and after the adjustment, the head mounting plate is mounted using an adhesive. However, when installing using shims, it took time and effort to insert the shims. Furthermore, the conventional head mounting structure has a problem in that the machining accuracy of the shim greatly affects the mounting accuracy of the magnetic head.

In addition, the conventional magnetic head mounting structure is screwed and glued onto the head mounting plate or head carriage.
It has drawbacks such as poor elasticity and the adhesive surface peeling off when subjected to shocks such as drops.

Furthermore, since the flanges of the plurality of screws are all glued after each adjustment such as azimuth adjustment is made, the number of bonding points is the same as the number of screws, making the installation process of the magnetic head complicated. [Object of the Invention] The present invention was made in view of the above circumstances, and it improves the mounting accuracy of the magnetic head by reducing the dimensional change during curing of the adhesive layer, and The object of the present invention is to provide a magnetic head mounting structure that is easy to install and has excellent impact resistance.

[Summary of the invention]

In order to achieve the above object, the present invention provides a mounting structure for a magnetic head that is attached to a head carriage and moves in the radial direction of a rotating magnetic sheet to perform recording or reproduction on the magnetic sheet. A flange pin is inserted into this through hole, a first adhesive layer is formed between the flange of the pin and the head carriage, and a first adhesive layer is formed between the tip of the pin and the plate to which the head is previously attached. A second adhesive layer is formed on the plate, the first adhesive layer is formed thicker than the second adhesive layer, and the plate is adhered to the head carriage via the flanged pin.

〔Example〕

Hereinafter, preferred embodiments of the magnetic head mounting structure according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 4 shows a plan view of a magnetic sheet pack used in a magnetic recording or reproducing device such as an electronic camera, and FIG. 5 is a sectional view taken along line A--A in FIG. 4. As shown in FIG. 4, the magnetic sheet pack 16 has a substantially rectangular shape,
Magnetic sheet 18 on which still image information etc. are recorded
is rotatably stored. A center core 20 as a reinforcing member is provided in the center of the magnetic sheet 18, and this center core 20 is exposed to the outside through a circular opening 22 of the magnetic sheet pack 16, and a central core 20 is provided in the opening 22. supported. A window 24 in which a magnetic head, which will be described later, is located is opened in the magnetic sheet pack 16, and this window 24 for the magnetic head is opened and closed by a slideable shutter 26.

That is, the shutter 26 closes the window 24 to prevent dust from adhering to the magnetic sheet 18 before the magnetic sheet pack 16 is inserted into the inner bucket, which will be described later, and the magnetic sheet pack 16 is inserted into the inner bucket. The shutter 26 moves downward in FIG. 4 to open the head window 24, making it possible to record and reproduce information on the magnetic sheet 18.

In FIG. 6, a magnetic recording or reproducing device is shown, and the magnetic recording or reproducing device is composed of a chassis 28, a bucket 30 into which the magnetic sheet pack 16 is inserted, and an upper IE 32. First, the internal structure of the chassis 28 will be explained. The chassis 28 includes a motor 34 for driving a magnetic sheet.
is disposed, and when the top cover 32 is closed, the drive shaft 36 of the motor 34 fits into the center hole 21 of the center core 20 of the magnetic sheet pack 16 shown in FIG.
6, the magnetic sheet 18 is rotated at a predetermined number of rotations. Further, in FIG. 6, 38 is a motor for driving the magnetic head, and 40
41 is a lead screw, 41 is a guide shaft, 42 is a head carriage that is screwed together with this lead screw 40 and is moved by the single-head screw 40, and 46 is a head carriage 42 via a magnetic head mounting structure 45 according to an embodiment of the present invention. It is a magnetic head attached to the Therefore, when the motor 38 is rotated at a predetermined number of revolutions, the head carriage 42 is moved at a predetermined pitch in the axial direction of the guide shaft 41, and therefore the magnetic head 46 is moved in the radial direction of the magnetic sheet 18. Still image information can be recorded or reproduced by forming a circular or spiral track thereon.

Leaf springs 50.50 are provided at predetermined intervals on the back surface of the upper lid 32, and a regulating plate holder 52 is attached to the leaf springs 50.50. The regulation plate holder 52 has a length corresponding to approximately the entire width of the chassis 28, and the regulation plate holder 52 further has a regulation plate 5 at a position facing the magnetic head 46 when the top cover 32 is closed.
4 is provided. A groove 56 is formed in the regulation plate 54 in the direction of movement of the magnetic head 46 . On the other hand, chassis 2
In FIG. 8 of FIG. 8, a receiver pin 58 is installed on the left side, and receiver pins 60 and 62 are installed on the right side. The receiver is pin 5
When the upper cover 32 is closed, the upper surface of 8.60.62 contacts or fits into the elongated hole 53, holder surface 55, and round hole 57 provided in the regulating plate holder 52, respectively, and the regulating plate 54 is inserted into the magnetic head 4.
The height is regulated to maintain a predetermined distance from 6, and accurate positioning is performed.

A pin (not shown) is arranged on the magnetic seat puncture 16, and the magnetic sheet 18 attached to the drive shaft is connected to the pack 16.
Rotates within the pack 16 without touching.

7 is an exploded perspective view showing the assembled state of the magnetic head mounting structure according to the present invention, FIG. 8 is a plan view showing the magnetic head mounting structure, and FIG. 9 is taken along the line IX-IX in FIG. FIG. The head mounting structure 45 is mounted on the head carriage 42 as shown in FIG. 7, and includes a temporary base 64, a (first) centering adjustment plate 66, and an azimuth adjustment (second) adjustment plate 68. The main components are:

The second adjusting plate 68 has upright pieces 70 and 72 on two sides.
is bent upward, and the magnetic head 46 is attached to one of the upright pieces 70 via screws 74. The second adjusting plate 68 is rotatably mounted on the first adjusting plate 66 around a screw 76 and a spring spring 77.

That is, the screw 76 is inserted into a hole 78 formed in the first adjustment plate 66 and a hole 80 formed in the second adjustment plate 68,
The second adjustment plate 68 is rotatably attached to the first adjustment plate 66 about a screw 76.

The screw 76 is located below the center of the head gap of the magnetic throat 46, so that the magnetic head 46 can rotate about the head gap.

A standing piece 82 is formed by bending the first adjustment plate 66.
A hole 84.106 is formed in this upright piece 82.
An azimuth adjustment screw 86 is inserted through. The azimuth adjustment screw 86 is inserted into the hole 84 of the upright piece 82 and is connected to the upright piece 72 of the second adjusting plate 68 via the spring 88.
is screwed into the screw hole 91 of. Thereby, by rotating the screw 86, the second adjustment plate 68 will rotate around the screw 76. That is, the azimuth can be adjusted by rotating the magnetic head 46 around the gap. The spring 88 is located between the upright piece 72 and the upright piece 82, and is a spring that biases the second adjusting plate 68 to rotate in one direction.

The first adjustment plate 66 is rotatably attached to the base plate 64 via a spring washer 93.

That is, a hole 94 is formed in the base plate 64 and a first hole 94 is formed in the base plate 64.
A hole 96 is also formed in the adjustment plate 66, and the screw 92 is inserted into the hole 96 from below the base plate 64 through a spring washer 93.
4.96, whereby the first adjusting plate 66 is attached to the base plate 64 so as to be rotatable about the screw 92. An upright piece 98 is bent and formed on the base plate 64, and a centering adjustment spring 100 is screwed into this upright piece 98. That is, the screw 100 is inserted into the hole 10 of the upright piece 98.
2 through the spring 104, and the first
is screwed into the hole 106 of the upright piece 82 of the adjustment plate 66. Therefore, by rotating the screw 100, the first adjustment plate 66 will rotate around the screw 92. That is,
Off-center adjustment can be performed by moving the magnetic head 46. Note that the spring 104 is a spring that biases the first adjustment plate 66 in one direction.

The base plate 64 is fixed onto the head carriage 42.

That is, holes 108, 108, 108 are formed in the base plate 64, and holes 110, 110, 110 are formed in the head carriage 42 corresponding to the holes 108, 108, 108. The base plate 64 is attached to the head carriage 42 by inserting three screws 112 from below the head carriage 42 into the holes 110 and 108 via the springs 109, respectively. The base plate 64 is further connected to the head carriage 42 via an oval flanged pin 200.
fixed on top. That is, the long hole 2 is formed in the head carriage 42.
02 is formed, and a flanged pin 200 is inserted into this elongated hole 202 from below in the figure, and the periphery and tip of the flanges are bonded to the head carriage 42 and the base plate 64 as shown in FIG. The length p of the flanged pin 200 is longer than the distance from the bottom surface of the base plate 64 to the bottom surface of the head carriage 42, as shown in FIG. Therefore, the adhesive layer a on the collar is thicker than the adhesive layer a on the tip of the flanged pin 200, and the base plate 64 is (
The adhesive layer 208 is designed to receive a force upward in the figure as the adhesive 208 cures (because the amount of shrinkage due to curing is larger on the adhesive layer A than on the adhesive layer A). It is biased upwardly to relieve the upward force applied to the base plate 64 as the adhesive 208 hardens, and also to buffer the impact force caused by the falling ring when it is applied to the magnetic head mounting structure.

In the magnetic head mounting structure of the first embodiment, elongated holes 216 and 218 having a smaller diameter than the elongated hole 202 of the head carriage 42 are formed in the base plate 64 and the first adjusting plate 66, respectively. The elongated holes 216 and 218 are formed in directions perpendicular to each other, and the adhesive 208 applied to the tip of the flanged pin 200 enters the first and second adjustment plates 66 and 68.
is fixed to the base plate 64.

The operation of the magnetic head mounting structure according to the first embodiment configured as described above is as follows. First, the centering adjustment of the magnetic head 46 is performed. Centering adjustment is done using the standing piece 9.
This is done by rotating the screw 100 provided at 8. That is, when the screw 100 is rotated, the tip of the screw 100 is screwed into the hole 106 of the first adjustment plate 66, so this rotation causes the first adjustment plate 66 to rotate around the screw 92. be able to. The first adjusting plate 66 is connected to the screw 9
2, the second adjustment plate 68 rotates together with the first adjustment plate 66 because it is placed on the first adjustment plate 66, thereby adjusting the centering of the magnetic head 46. conduct.

Next, azimuth adjustment will be explained. Azimuth adjustment is performed by rotating a screw 86 provided on the upright piece 82. That is, the screw 86 is connected to the upright piece 7 of the second adjusting plate 68.
2, and by rotating this screw 86, the second adjustment plate 68 will rotate around the screw 76. Since the screw 76 is located directly below the gap of the magnetic head 46, the magnetic head 46 rotates around the gap, thereby making it possible to adjust the azimuth.

Such azimuth adjustment involves rotating the standard sheet and bringing the magnetic head 46 into contact with it, reproducing the standard signal, and
Appropriate azimuth adjustment can be made by selecting the position of maximum output.

Incidentally, since the azimuth adjustment is performed after the centering adjustment, even if the azimuth angle is deviated by rotating the first adjusting plate 66 during the centering adjustment, it is not a problem because it will be returned to its original value by the subsequent adjustment.

In this state, the flanged pin 200, whose flanges and tips are coated with adhesive 208, is inserted into the elongated hole 2 of the cartridge 42.
02, and its tip is brought into contact with the bottom surface of the base plate 64. Then, the adhesive 208 applied to the tips of the flanged pins 200 enters the elongated holes 218 and 216 of the first adjustment plate 66 and the base plate 64, and the second adjustment plate 68 The first adjustment plates 66 are fixed to the base plate 64, respectively.

The base plate 64 has a flanged pin 200 as shown in FIG.
The flange of the flange pin 200 is attached to the head carriage 42 at the tip of the flange pin 200.
are glued around the elongated holes 202, respectively. The adhesive 208 tends to harden and shrink after being applied, but since the adhesive layer a on the flange is thicker than the adhesive layer a on the tip of the flanged pin 200, the adhesive layer a due to the hardening of the adhesive 208
, b has a larger yield than a. For this reason, the base plate 64 receives a force directed upward in the figure, but is not affected by the hardening of the adhesive 208 because it is previously urged upward by the spring 109. and,
In addition to the fact that the adhesive area between the base plate 64 and the flanged pin 200, and between the flanged pin 200 and the head carriage 42 is small,
Curing of the adhesive 208 does not change its position. Since the base plate 64 is not affected by the curing of the adhesive 208, the first and second adjusting plates 66 and 68
is held at the position as adjusted by the centering, etc., and accordingly, the magnetic head 46 is fixed to the head carriage 42 in an appropriate positional relationship. In addition, in the magnetic head mounting structure of the first embodiment, since the spring 109 is interposed between the head carriage 42 and the base plate 64, even if the impact force of the falling ring is applied, the impact force is suppressed. Buffered.

Therefore, in the magnetic head mounting structure of this embodiment, elongated holes 218 and 216 are formed in the first uneven plate 66 and the base plate 64, respectively, and the adhesive 208 is injected into the elongated holes 218 and 216. Since the second adjustment plates 68 and 66 are fixed to the base plate 64, the adhesive area is reduced and the adhesive 208
The shrinkage of the magnetic head 4 is kept within a small range, and the adhesive strength and magnetic head 4 are
It is possible to improve the mounting accuracy of No. 6.

In the first embodiment, the flanged pin 200 is connected to the base plate 64 and the head carrier via a spring.

It may also be attached to the cage 42.

FIG. 10 is an exploded perspective view showing the mounting structure of the magnetic head according to the second embodiment, and FIG. 11 is a side view of the same, which is the same or similar to the first embodiment shown in FIGS. 7 to 9. The same reference numerals are given to the members, and the same explanations are omitted. The magnetic head mounting structure of the second embodiment has a first magnetic head mounted on the head carriage 42.
An adjustment plate 66 is attached.

The first and second adjusting plates 66 and 68 are connected to the head carriage 4.
The screws 112 inserted from the three long holes 220 of 2.
are sequentially mounted on the head carriage 42 by.

That is, the second adjustment plate 68 has an azimuth hole 80 and two long holes 222, 222, and the first adjustment plate 66 has three holes 222, 222.
24..., but the head carriage 42 has three long holes 2.
20 are formed respectively, and screws 112A, 112B, 112
B is inserted from the bottom of the head carriage 42.

A spring 109 is connected between the first adjusting plate 66 and the head carriage 42 by screws 1 as in the first embodiment.
12A, 112B, and 112B, and are provided so as to relax the contraction of the adhesive 208 and buffer the impact of the falling ring.

First and second adjustment plates 66, 68, head carriage 4
2 has a hole 226 for inserting the azimuth adjustment jig 225.
．． 228 and 230 are formed respectively. The second adjustment plate 68 rotates around the screw 112A by rotating the adjustment jig 225 inserted into the holes 226, 228, 230, so that the azimuth adjustment of the magnetic head 46 is performed. ing. At this time, the other screws 112B, 1
12B is inserted into the elongated hole 222 of the second adjusting plate 68 so as not to prevent the second adjusting plate 68 from rotating.

The first adjusting manual pressure 66 and the head carriage 42 are provided with upright pieces 232,234, respectively, and the upright pieces 232,23
4, a centering adjustment screw 100 is provided with a spring 104 loosely fitted therebetween. First adjustment plate 66
By rotating the screw 100, the head carriage 42 is moved in a direction perpendicular to the moving direction of the head carriage 42, and the magnetic heald 46 is adjusted off-center.

That is, by rotating the screw 100, the screw 112A
, 112B, 112B are long holes 2 of the head carriage 42.
20 to displace the first adjustment plate 66 with respect to the head carriage 42.

The second adjusting plate 68 is connected to the elongated hole 2 of the first adjusting plate 66.
Adhesive 208 applied to the tip of the flanged pin 200 at 18
is fixed to the first adjustment plate 66 by entering,
The first adjusting plate 66 is connected to the flanged pin 20 as shown in FIG.
0 to the head carriage 42 with adhesive.

In the magnetic head mounting structure of the second embodiment, off-center adjustment is later performed using the centering adjustment screw 100, and azimuth adjustment is performed using the azimuth adjustment jig 225. Later, similar to the first embodiment shown in FIGS. 7 to 9, the first
The adjustment plate 66 and the second adjustment plate 68 are adhesively fixed to the head carriage 42 via a flanged pin 200, and the base plate 64 is not required, making it possible to omit other members.

In the second embodiment, as shown in FIG. 12, the spring 210 may be provided only on the flanged pin 200 and interposed between the first adjusting plate 66 and the head carriage 42.

FIG. 13 is an exploded perspective view showing the mounting structure of the magnetic head of the third embodiment. The magnetic head mounting structure of the third embodiment includes a head mounting plate 240 to which a magnetic head 46 is mounted, a first adjusting plate 66, and a head carriage 42 as main components.

The head carriage 42 has three elongated cylindrical holes 242 that project upward in the figure. On the other hand, the head mounting plate 240 is formed with three holes 244 corresponding to the long holes 242 of the head carriage 42, and the first adjustment plate 66 also has three holes 246...
The head mounting plate 240 and the first adjusting plate 66 are formed with elongated holes 242 from below the head carriage 42, respectively.
head carriage 42 by screws 112 inserted into
installed on top. At this time, springs 109 similar to those in the first and second embodiments are interposed between the head mounting plate 240 and the first adjustment plate 66 by being loosely fitted to the screws 112, and 109 . . . urges the head mounting plate 240 in a direction away from the first adjustment plate 66 .

Further, between the first adjustment plate 66 and the upright pieces 232 and 234 of the head carriage 42, there is a screw 1 for centering adjustment.
00.100 are provided in parallel via springs 104 and 104. Centering adjustment screw 100.
100, the screws 112... slide through the long holes 242... of the head carriage 42, and the first
The adjustment plate 66 is adapted to be displaced relative to the head carriage 42. As a result, the off-center adjustment and azimuth adjustment of the magnetic head 46 of the head mounting plate 240 is accomplished.

Furthermore, an elongated hole 250 with a cylinder whose periphery is protruding is formed in the center of the head carriage 42 , and a flanged pin 200 is inserted into the elongated hole 250 so that the first adjustment plate 66 is adjusted through the flanged pin 200 . and is fixed to the head carriage 42. Further, the head mounting plate 240 is fixed to the first adjusting plate 66 with an adhesive in the hole 218 formed in the first adjusting plate 66 .

The first adjustment plate 66 is brought into contact with the upper ends of the elongated holes 242 .

The magnetic head mounting structure of the third embodiment includes elongated cylindrical holes 242 .
0, the first adjusting plate 66 can be attached to the head carriage 42 at a predetermined height.

In the above first to third embodiments, the first adjusting plate 66
, a long hole or hole 216.21 formed in the base plate 64
8 is a flanged pin 20 formed on the head carriage 42
The long holes 202 and 250 for inserting 0 are formed in a misplaced state. Then, by simply applying adhesive 208 to the tip of the flanged pin 200 and the flange, the head mounting machine 240
, the first and second adjusting plates 66, 68, the base plate 64, the flanged pin 200, and the head carriage 42 can be fixed.

〔Effect of the invention〕

As explained above, according to the magnetic head mounting structure according to the present invention, the adhesive layer of the flange is formed thicker than the tip of the flange pin, and the tip is attached to the plate with the magnetic head attached to one end of the flange. The parts are bonded to the head carriage with the minimum adhesive area, and the plate is attached to the head carriage via a flanged pin, so it is possible to understand the behavior (change in position) of the head mounting plate due to shrinkage when the adhesive layer hardens. It is possible to improve the mounting accuracy of the magnetic head by making it smaller and to simplify the mounting process, and it has excellent impact resistance.

[Brief explanation of the drawing]

Figure 1 is an explanatory diagram showing the protrusion amount and tilt angle of the magnetic head, Figure 2 is an explanatory diagram showing the center alignment and azimuth deviation of the magnetic head, Figure 3 is an explanatory diagram showing tilt, and Figure 4 is an explanatory diagram showing the magnetic sheet. 5 is a sectional view of the magnetic sheet pack taken along the line A-A in FIG. 4, FIG. 6 is a perspective view of the magnetic disk drive, and FIG. 7 is a diagram showing the first embodiment of the present invention. FIG. 8 is an exploded perspective view showing the mounting structure of the magnetic head, FIG. 9 is a sectional view taken along line IX-IX in FIG. 8, and FIG. 10 is an exploded perspective view of the magnetic head of the second embodiment. FIG. 11 is a side view of the mounting structure, FIG. 12 is a side view of a modified example, and FIG. 13 is an exploded perspective view of the magnetic head mounting structure according to the third embodiment. 18...Magnetic sheet, 28...Chassis,
42... Head carriage, 45... Head mounting structure, 46... Magnetic head, 64... Base plate, 66... First adjustment plate, 68... Second adjustment plate, 78.96.224... Hole in the first adjusting plate, 80°222.244... Hole in the second adjusting plate,
108...Base plate hole, 112.112A, 11
2B...screw, 200...flange pin, 202
．． 250...Elongated hole of head carriage, 208...
・Adhesive, 240...Head attachment machine.

Claims (2)

[Claims] (1) In the mounting structure of a magnetic head that is attached to a head carriage and moves in the radial direction of a rotating magnetic sheet to perform recording or reproduction on the magnetic sheet, a through hole is formed in the head carriage and the through hole is Inserting a flanged pin, forming a first adhesive layer between the pin's collar and the head carriage, and forming a second adhesive layer between the tip of the pin and the plate to which the head is previously attached. death,
A mounting structure for a magnetic head, characterized in that the first adhesive layer is formed thicker than the second adhesive layer, and the plate is adhered to the head carriage via the flanged pin. (2) The magnetic head mounting structure according to claim 1, further comprising an elastic member disposed between the plate and the head carriage to bias the plate in a direction away from the head carriage.