JP2003007018A - Head loading device for disk characteristics evaluation apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain the increase of speed and the facilitation of adjustment, or the like, for a loading device by improving the rigidity of a loading mechanism of a head clamp and also reducing the weight of the head clamp. SOLUTION: In a disk characteristic evaluation apparatus, a magnetic head 5 is furnished at a tip part of a suspension 11 which is freely attachable to or detachable from a head clamp 17 arranged on a head clamp device 9. A head loading device 1 is provided movably in the loading/unloading direction that the tip side of the suspension approaches or separates from the surface of the magnetic disk 3. A load main body 29 of the head loading device 1 is arranged so as to approach the circumferencial outside of the head clamp device 9. The movement mechanism 30 of the head loading device 1 is pivotally supported with the load main body 29 so as to freely turn in the vertical direction, and a wire 63 is arranged at a tip part of the movement mechanism 30 as a pawl part which loads/unloads the magnetic head 5 to from the magnetic disk 3 by engaging with the tip part of the suspension 11 in accordance with the moving operation of the movement mechanism 30 and turning the tip side of the suspension 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a head loading device for a disk characteristic evaluation device.

[0002]

2. Description of the Related Art With the recent improvement in the characteristics of hard disk devices, it is necessary to improve the performance of evaluation devices for measuring the electromagnetic conversion characteristics of magnetic disks and magnetic heads, which are basic components.

Particularly, as the track density increases, the core width of the magnetic head tends to become narrower. Therefore, in order to perform accurate measurement, it is indispensable to improve the track positioning accuracy of the evaluation device itself. By combining a fine movement stage with a piezo element on a coarse movement stage driven by a pulse motor drive or an ultrasonic motor,
The positioning accuracy of the magnetic head is improved.

For example, as a conventional example of this type of disk characteristic evaluation apparatus, there is a conventional disk characteristic evaluation apparatus 101 as shown in FIGS.

In the conventional disc characteristic evaluation apparatus 101, a spindle motor housing 105 having a spindle motor 103 (air spindle) inside is provided on the mounting surface of the upper surface of a base 107 in the form of a plate. At the top of the spindle motor housing 105, the spindle motor 10
3 is provided with a disk clamp 109 that is rotationally driven, and a magnetic disk 111 is clamped / unclamped on the upper end of the disk clamp 109.

On the upper surface of the base 107, in order to position the magnetic heads 113 and 115 in the X axis direction (left and right direction in FIG. 8) at a position adjacent to the disk clamp 109 in the upper direction in FIG. The coarse movement stage 117 (X stage) is provided, and the coarse movement stage 117 is driven in the X axis direction by the drive motor 119 for driving the X stage via the X axis ball screw 121.

Further, a segment gear 123, which is fixed in parallel with the magnetic disk 111, is provided on the upper surface of the coarse movement stage 117.
23 is formed in a semi-circular shape, and a rack 125 is provided on the outer peripheral edge.

A head loader 129 provided with a head clamp device 127 provided with a pair of magnetic heads 113 and 115 consisting of a down face and an up face is movably provided on the segment gear 123 in a semicircular arc shape. The head loader 129 is provided with a pinion 131 that meshes with the rack 125 of the segment gear 123. The pinion 131 is rotationally transmitted and driven via a speed reducer (not shown) by a skew angle motor provided in, for example, a head loader 129 as a head loader device, and the rack 125 of the segment gear 123.
The head loader 129 rotates and the magnetic heads 113 and 115 are positioned by meshing with each other and performing a rotational movement along the outer peripheral surface with a rotation angle of 90 °. In FIG. 8, the positions of the magnetic heads 113 and 115 and the position of the rotation center of the magnetic disk 111 are on the same line in the X-axis direction.

On the base side of the head loader 129, as shown in FIG. 8, a piezo actuator 13 for slightly moving the upper part of the head loader 129 in the X-axis direction.
3 is provided.

Referring to FIG. 9, the above head clamp device 127 includes the upper head clamp 13 on the down face side.
5 (not shown in FIG. 9) and the lower head clamp 137 on the up-face side.
The lower head clamp 137 will be described in detail because the reference numerals 35 and 137 are vertically symmetrical and substantially the same in structure.

The lower head clamp 137 is vertically movable via a lower mounting base 139, and is detachably mounted on the lower mounting base 139. At the front end of the lower head clamp 137, a suspension 143 having a magnetic head 115 (up face) at its tip is clamped via a clamp portion 141.

A vertical movement device for the head clamp device 127 is built in the head loader 129, and the upper and lower head clamps 135 and 137 are independently moved up and down to control the magnetic heads 113 and 115 to the magnetic disk. It is possible to move back and forth in the vertical direction so as to sandwich 111 from the vertical direction.

Referring to FIG. 10, the suspension 14
The magnetic head 115 for the ramp load structure is provided at the tip of 3.
And the rear end of the suspension 143 is integrally provided on the base plate 145. The magnetic head 115 for the ramp load structure has a protrusion 147 for the ramp load at the tip.

The lower head clamp 137 is an FB mount block having a T-shaped base on the plane and a thin end extending on the front end of a front end of an insert block 149 which is detachably attached to a lower mounting base 139. 151
Are provided integrally.

A fixture base 153 for attaching the base plate 145 is provided on the upper surface of the FB mount block 151 on the base side, and the rear end of the base plate 145 placed on the upper surface of the fixture base 153 is clamped. Clamp part 141 for
Clamp block 155 equipped with guide rail 157
It is provided so as to be slidable in the front-back direction via.

Further, a head loading device 159 is provided on the front upper surface of the FB mount block 151. In this head loading device 159, a wire base 161 is slidably provided in the front-rear direction via a guide rail 163, the wire base 161 has an L-shaped cross section, and a spring 165 for pulling the wire base always keeps the rear side. It is provided so as to be biased in the direction of being pulled to the side and stop at a predetermined original position.

Also, with the wire base 161 in the original position, the two wire supporting members 167 are positioned on the left and right sides of the ramp load projection 147 and project upward from the upper surface of the wire base 161 in FIG. And above 2
A wire 169 is attached to the upper ends of the two wire supporting members 167 in a tensioned state in a substantially horizontal direction. That is, the two wire supporting members 167 and the wire 169 are formed in a gate shape, and the protruding portion 147 has a space on the lower side of the wire 169 in FIG.

With the above structure, when the suspension 143 is clamped by the clamp portion 141, the tip end side of the suspension 143 is in a state of being slightly lifted up. For example, an operator's hand may use the suspension 1 so that the ramp load protrusion 147 passes under the wire 169.
By moving the wire base 161 back and forth while pushing down 43, the protrusion 147 is pressed downward by the wire 169 in the original position, and the suspension 143 becomes stable in the vertical direction.

The actual load condition is the lower head clamp 1.
37 rises, the upper surface of the magnetic head 115 is positioned at a predetermined position on the lower surface of the magnetic disk 111 as shown in FIG. 11A, and when the magnetic disk 111 rotates, the protrusion 147 of the suspension 143 is released. Wire 169
A normal air gap is generated between the magnetic head 115 and the magnetic disk 111 away from the read / write operation.

In the unloading state, the lower head clamp 137 descends, and the upper surface of the magnetic head 115 separates from the lower surface of the magnetic disk 111 as shown in FIG. 11 (B).

In the conventional disk characteristic evaluation apparatus 101 as described above, when the characteristics of the magnetic heads 113 and 115 are evaluated, after the magnetic disk 111 is set to a predetermined rotation speed by the spindle motor 103, the coarse movement stage is set. 117 is sent in the X-axis direction, for example, the track width direction, and the magnetic heads 113 and 115 are positioned at predetermined positions.

Further, after the skew angle, which is an offset angle with respect to the tangent line in the track direction, is set, the magnetic heads 113 and 115 at the tip of the HGA are loaded by the head loader 129 so as to have a predetermined flying height. That is, the upper head clamp 135 and the lower head clamp 137.
Are adjusted up and down respectively.

Next, in the track profile characteristic evaluation in which the characteristic evaluation is performed while slightly moving the track positions of the magnetic heads 113 and 115 in the track width direction, and in the error rate characteristic evaluation (bathtub characteristic), the magnetic head is moved by the piezo actuator 133. The positioning resolution of the magnetic heads 113 and 115 is improved by measuring while 113 and 115 are offset by a minute amount.

[0024]

In the conventional disk characteristic evaluation apparatus 101, the magnetic head 11 is used.
When loading and unloading 3,115,
The lower head clamps 135 and 137 are magnetic disks 111.
Since it has a structure that vertically moves up and down in a state of being parallel to the surface of the head clamp device 127, since the upper and lower head clamps 135 and 137 are complicated mechanisms, the lifting drive mechanism of the head clamp device 127 requires high rigidity. However, there is a problem that the lifting drive mechanism itself is complicated and costly.

Further, the load mechanism and the head clamp device 1
Since 27 is mounted on the piezo actuator 133, there is a problem that it is difficult to perform fine adjustment by the piezo actuator 133 because of its large weight.

The present invention has been made to solve the above-mentioned problems, and its purpose is to improve the rigidity of the load mechanism of the head clamp, reduce the weight of the head clamp, speed up, and facilitate adjustment. It is an object of the present invention to provide a head loading device for a disk characteristic evaluation device capable of achieving the above.

[0027]

In order to achieve the above object, a head loading device for a disk characteristic evaluation device according to the present invention according to claim 1 is a magnetic disk while rotating a magnetic disk having a plurality of concentric tracks. A head clamp device in which the magnetic head is positioned at a predetermined track position for evaluating the electromagnetic conversion characteristics of at least one of the magnetic heads, and a suspension having the magnetic head at the tip is detachably provided; A head loading device provided so as to be movable in a loading / unloading direction in which a front end side of the head is moved toward and away from the surface of the magnetic disk. Installed close to the load main body, A moving mechanism that can move in the same direction is provided, and the moving mechanism moves the leading end of the suspension to move the leading end of the suspension to move the magnetic head from the magnetic disk. It is characterized in that an interlocking portion is provided at the tip of the moving mechanism.

Therefore, the moving mechanism moves in the same direction as the load / unload direction in which the tip end side of the suspension approaches and separates from the surface of the magnetic disk, so that the engaging claw portion at the tip end of the load arm moves to the suspension. Since the magnetic head of the suspension is engaged with the tip portion, it can be easily loaded and unloaded on the magnetic disk. Since the head loading device and the head clamp device are provided separately, the rigidity of the head loading device can be increased, and the overall structure including the head clamp device can be simplified to reduce the number of parts. The cost can be reduced.

Further, as the head clamp device is made higher in rigidity and lighter in weight, it is possible to speed up disc characteristic evaluation, facilitate adjustment of loading / unloading action, and facilitate assembly.
This will prevent accidents such as damage to the magnetic head and the magnetic disk.

According to a second aspect of the present invention, there is provided a head loading device for a disk characteristic evaluating device according to the first aspect, wherein the engaging claw portion is provided at the tip of the moving mechanism. Two wire rod support members projecting in a direction substantially the same as the load / unload direction with a tip end portion of the suspension interposed therebetween, and a tip end portion of the suspension between the two wire rod support members. And a wire rod which is tensioned in a direction substantially parallel to the surface of the magnetic disk so as to hold it at a predetermined position in the rotation direction of the suspension.

Therefore, since the wire rod as the engaging claw portion is provided so as to be tensioned in a direction substantially parallel to the surface of the magnetic disk, it easily engages with the tip portion of the suspension, and the magnetic head of the suspension has the magnetic disk. Is surely loaded and unloaded.

According to a third aspect of the present invention, there is provided a head loading device for a disc characteristic evaluation device according to the first or second aspect, wherein the load main body is loaded / unloaded by the moving body. It is characterized in that a stopper member for regulating the amount is provided for fine adjustment movement on the movement locus of the movement mechanism.

Therefore, since the load / unload amount of the load arm is easily fine-tuned by the stopper member, stable disk characteristic evaluation can be performed.

[0034]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a head loading device for a disk characteristic evaluation device of the present invention will be described below with reference to the drawings. The disk characteristic evaluation apparatus according to this embodiment is basically similar to the disk characteristic evaluation apparatus shown in FIGS. Is omitted,
The different points will be described.

With reference to FIGS. 1 to 5, the head loading device 1 of this embodiment is provided with a loading mechanism for vertically moving the magnetic head 5 with respect to the magnetic disk 3, and is arranged outside the piezo actuator 7. Has been
It is separated from the head clamp device 9.

The suspension 11 is provided with a magnetic head 5 for a ramp load structure at the tip thereof, and the tip of the suspension 11 is provided with a protrusion 13 for ramp load. Also, the suspension 11
The rear end is integrally provided on the base plate 15.

As the head clamp device 9, a head clamp 17 is placed on the piezo actuator 7 as shown in FIG. 4, and the front end of the head clamp 17 is a side surface at the base in this embodiment. The side is a vertical piece L
A mount block 19 having a character shape and a shape extending toward the tip side is integrally provided.

A fixture base 21 for mounting the base plate 15 is provided on the upper surface of the mount block 19 on the base side, and the rear end of the base plate 15 placed on the upper surface of the fixture base 21 is clamped. A clamp block 25 provided with a clamp portion 23 is provided so as to be slidable in the front-rear direction via a guide rail 27.

The head loading device 1 will be described in detail with reference to FIGS. 1 and 2. A load base 29 having a block shape, for example, as a load main body is erected at a position separated from the head clamp device 9. A moving mechanism 30 is provided on the lower side wall surface of the load base 29 in FIG. 1.

In this moving mechanism 30, as shown in FIG. 2, the first locking piece 31 extending in the lateral direction is supported by a pin 32 at substantially the center thereof. Both ends of the can swing in the vertical direction with the pin 32 as a fulcrum.

A load position stopper portion 33 is provided on the right side of the first locking piece 31 in FIG. A load stopper pin 35 that engages with the load position stopper portion 33 and stops the counterclockwise rotation of the first locking piece 31.
Is provided on the top of the load base 29 via the first bracket 37 so that the position can be adjusted in the vertical direction. More specifically, the load stopper pin 35 is screwed onto the first bracket 37 while being extended downward, and the lower end of the load stopper pin 35 can come into contact with the load position stopper portion 33. A first engaging portion 39 is provided on the lower surface of the left end of the first locking piece 31 in FIG.

The first locking piece 31 is the first spring 4
Since it is always urged in the counterclockwise direction by 1, the load position stopper portion 33 contacts the load stopper pin 35 and is positioned at the load position.

On the right side of the side wall surface of the load base 29 in FIG. 2, the first locking piece 31 is rotated clockwise by engaging the right end of the first locking piece 31 to unload the magnetic head 5. A loading / unloading actuating member 43 for pivoting in the direction is provided so as to be movable back and forth in the left direction in FIG. The lower end of the tip of the load / unload operation member 43 is a tapered surface 45.

The side wall of the load base 29 is laterally extended to the left side in FIG. 2 in FIG.
Both ends of the can swing in the vertical direction with the pin 48 as a fulcrum.

The second end of the second locking piece 47 at the right end in FIG.
The engaging portion 49 is engageable with the first engaging portion 39 of the first engaging piece 31, and the unloading position stopper portion 51 is provided on the right end side of the second engaging piece 47 in FIG. Has been. The unloading position stopper portion 51 is engaged with the second
An unload stopper pin 53 for stopping the counterclockwise rotation of the locking piece 47 is provided on the side wall of the load base 29 through the second bracket 55 so that the position can be adjusted in the vertical direction. The unload stopper pin 53 is screwed onto the second bracket 55 in a state of being extended downward, and the lower end of the unload stopper pin 53 can contact the unload position stopper portion 51.

The second locking piece 47 is the second spring 5
Since it is always urged in the counterclockwise direction by 7, the second engaging portion 49 at the right end of the second engaging piece 47 has the first engaging piece 31.
It is abutted against the first engaging portion 39 and held at the load position. The second spring 57 is smaller than the urging force of the first spring 41 described above.

At the left end of the second locking piece 47 in FIG. 2, the load arm 59 is L-shaped on the plane and the tip is extended downward in FIG. It is attached in a state of being located below. As described above, the load arm 59 is configured to be rotatable in the same direction as the load / unload direction in which the tip end side of the suspension 11 approaches and separates from the surface of the magnetic disk 3.

The tip end of the load arm 59 is engaged with the protrusion 13 of the suspension 11 as the load arm 59 is rotated, and the tip end side of the suspension 11 is rotated to move the magnetic head 5 to the magnetic disk 3. For example, a claw portion 60 is provided as an engaging claw portion for loading and unloading.

Referring to FIG. 6, as the above-mentioned claw portion 60, for example, wire supporting members 61 as two wire rod supporting members are located on the left and right sides of the ramp load projection 13 and the load arm 59. 6, which protrudes upward from the upper surface, a wire 63, for example, as a wire member is attached to the upper ends of the two wire supporting members 61 in a substantially horizontal tension state. That is, the two wire support members 61 and the wire 63 are formed in a gate shape, and the above-mentioned protrusion 1 is formed on the lower side of the wire 63 in FIG.
3 has a structure in which there is a space in which it can be inserted.

Considering the air gap between the magnetic head 5 and the magnetic disk 3 that occurs during actual loading, the wire 63 is preferably a fine wire having a diameter smaller than the thickness of the magnetic head 5, for example, a diameter of 0. A thin and strong wire such as a 1 mm piano wire is preferable, but it is not limited to this.

With the above structure, the base plate 15 integrated with the suspension 11 is placed on the upper surface of the fixture base 21 in a state where the clamp block 25 is slid rearward (to the right in FIG. 4), and the clamp block 25 is fixed. When the rear end of the base plate 15 is clamped by the clamp block 25 by sliding to the front side (to the left in FIGS. 1, 2 and 4), the front end side of the suspension 11 is slightly flipped up. Become. However, the tip of the suspension 11 is vertically rotatable.

The suspension 11 is pushed down by, for example, an operator's hand so that the lamp load protrusion 13 is attached to the wire 6.
It is installed by passing under 3. Since the protrusion 13 is pressed downward by the wire 63, the suspension 1
1 makes it possible to rotate in the vertical direction, in other words, the magnetic head 5 in a stable state in the loading / unloading direction in which it approaches and separates from the surface of the magnetic disk 3.

The magnetic head 5 is the suspension 11
2 is provided on the upper surface, and the upper surface of the magnetic head 5 is located above the wire 63 (that is, on the surface side of the magnetic disk 3).

When the loading / unloading operation member 43 is advanced to the left in FIG. 2, the first locking piece 31 causes the biasing force of the first spring 41 by the tapered surface 45 at the tip of the loading / unloading operation member 43. In the opposite direction, the pin 32 is rotated clockwise as shown in FIG. Along with this, the second locking piece 47 also rotates counterclockwise by the urging force of the second spring 57 with the pin 48 as a fulcrum, and the unloading position stopper portion 51 is released as shown in FIG. It contacts the lower end of the unload stopper pin 53 and stops.

Therefore, since the load arm 59 on the front end side of the second locking piece 47 rotates counterclockwise, the tip of the load arm 59 descends and the wire 63 passes through the projection 13 of the suspension 11. Lower the tip side of the suspension 11. The magnetic head 5 is separated from the lower surface of the magnetic disk 3 as shown in FIG. The unload amount at this time is determined by adjusting the vertical movement of the unload stopper pin 53.

On the contrary to the above operation, the load / unload operation member 43 is retracted to the right in FIG. 2, so that the engaging portion at the right end of the first locking piece 31 is released so that the first engaging piece 31 is released. 1st locking piece 31 by the urging force of 1 spring 41
Rotates counterclockwise around the pin 32 as a fulcrum, as shown in FIG.
As shown in FIG. 5, the load position stopper portion 33 comes into contact with the lower end of the load stopper pin 35 and stops.

Therefore, the second locking piece 47 rotates clockwise about the pin 48 as a fulcrum, and the tip of the load arm 59 on the front end side rises, so that the wire 63 releases the projection 13 of the suspension 11. And suspension 11
The tip side of rises. The magnetic head 5 is positioned at the load position on the lower surface of the magnetic disk 3 as shown in FIG. The load position at this time is the load stopper pin 3
5 is determined by the vertical movement adjustment.

As described above, the load stopper pin 35 and the unload stopper pin 53 are connected to the load arm 59.
The stopper member is provided on the rotation locus of and regulates the load / unload amount of the load arm 59.

In the actual loaded state, when the magnetic disk 3 is rotated, the suspension 1 as shown in FIG.
The protrusion 13 of No. 1 is separated from the wire 63, and a normal air gap G is generated between the magnetic head 5 and the magnetic disk 3, and reading / writing is performed. By the way, the gap A between the protrusion 13 and the wire 63 is about 0.1 mm, and the air gap G between the magnetic head 5 and the magnetic disk 3 is actually several tens nm (1 nm = 1 × 10 ⁻⁶ mm). Become.

As described above, the head loading device 1 according to the present invention has a simple structure including the head clamp device 9, so that the number of parts is reduced and the cost can be reduced. With the weight reduction of the head clamp device 9, it is possible to speed up the disc characteristic evaluation, facilitate the adjustment of the loading / unloading action, and facilitate the assembly. Further, accidents such as damage to the magnetic head 5 and the magnetic disk 3 can be prevented.

The present invention is not limited to the above-described embodiments, but can be implemented in other modes by making appropriate changes.

In the above-described embodiment, the claw portion 60 as the engaging claw portion is configured to engage with the protrusion protruding forward at the tip of the suspension. However, in the head loading device of the present invention, The present invention is also applied to the suspension 11 having no protrusion 13 described above. That is, the engaging claw portion can be provided so as to be engageable with the tip portion of the suspension 11. The “tip of the suspension” may be, for example, the tip between the tip of the suspension 11 and the magnetic head 5, or the tip of the suspension 11 near the rear side of the magnetic head 5. Therefore, in the present invention, the above-mentioned protrusion 13
It is applied to the tip portion of the suspension 11 including the above.

[0063]

As can be understood from the description of the embodiment of the invention as described above, according to the invention of claim 1, the front end side of the suspension moves the moving mechanism toward and away from the surface of the magnetic disk. The magnetic head of the suspension can be easily loaded and unloaded from the magnetic disk by moving it in the same direction as the load / unload direction and engaging the engaging claw of the tip of the load arm with the tip of the suspension. . Since the head loading device and the head clamp device are provided separately, it is possible to increase the rigidity of the head loading device, and the overall structure including the head clamp device is reduced to reduce the number of parts. Can be down.

Further, since the head clamp device can be made highly rigid and lightweight, the disk characteristic can be evaluated at high speed and can be loaded.
It is possible to facilitate adjustment of the unloading action and facilitate assembly. Further, accidents such as damage to the magnetic head and the magnetic disk can be prevented.

According to the second aspect of the present invention, since the wire rod as the engaging claw portion is provided so as to be tensioned in a direction substantially parallel to the surface of the magnetic disk, it can be easily engaged with the front end portion of the suspension, and The magnetic head can be reliably loaded and unloaded from the magnetic disk.

According to the third aspect of the invention, since the load / unload amount of the load arm can be easily fine-tuned by the stopper member, stable disk characteristic evaluation can be performed.

[Brief description of drawings]

FIG. 1 is a plan view of a head loading device and a head clamp device according to an embodiment of the present invention.

FIG. 2 is a side view of the head loading device according to the embodiment of the present invention in a loaded state.

FIG. 3 is a side view of an unloaded state of the head loading device according to the embodiment of the present invention.

FIG. 4 is a diagram showing a loaded state of the disk characteristic evaluation apparatus according to the embodiment of the present invention.

FIG. 5 is a diagram showing an unloaded state of the disk characteristic evaluation apparatus according to the embodiment of the present invention.

FIG. 6 is a detailed enlarged view of a loading state in the VI portion of FIG.

FIG. 7 is an enlarged view of an unloaded state in a portion VII of FIG.

FIG. 8 is a plan view of a conventional disc characteristic evaluation device.

FIG. 9 is a side view of a conventional disk characteristic evaluation device.

FIG. 10 is an enlarged side view of a conventional head clamp device.

11A is an enlarged view of a conventional loaded state, and FIG. 11B is an enlarged view of a conventional unloaded state.

[Explanation of symbols]

1 Head loading device 3 magnetic disk 5 magnetic head 7 Piezo actuator 9 Head clamp device 11 suspension 13 Projection 15 base plate 17 head clamp 23 Clamp part 25 clamp block 29 Road Base (Road Body) 30 moving mechanism 31 First locking piece 33 Load position stopper 35 Road stopper pin 41 first spring 43 Load / unload operation member 47 Second locking piece 51 Unload position stopper 53 Unload stopper pin 57 Second spring 59 Road Arm 61 Wire support member 63 wire

Claims (3)

[Claims] 1. A magnetic head is positioned at a predetermined track position to evaluate the electromagnetic conversion characteristics of at least one of the magnetic disk and the magnetic head while rotating the magnetic disk having a plurality of concentric tracks. A head clamp device in which a suspension equipped with a magnetic head at the tip is detachably provided, and a head provided so that the tip side of the suspension is movable in a load / unload direction toward and away from the surface of the magnetic disk. A loading device, the load main body of the head loading device is provided close to the outside of the periphery of the head clamp device, and the moving main body is provided with a moving mechanism capable of moving in the same direction as the load / unload direction. , The suspension mechanism engages with the tip of the suspension as the moving mechanism moves. A head loading device for a disk characteristic evaluation device, characterized in that an engaging claw portion for loading and unloading the magnetic head from the magnetic disk by moving the tip end side of the magnetic disk is provided at the tip end portion of the moving mechanism. 2. The engaging claw portion is provided so as to project in a direction substantially the same as the loading / unloading direction with a space in which the distal end portion of the suspension can be fitted into the distal end portion of the moving mechanism. One wire rod support member, and a wire rod provided between the two wire rod support members in a direction substantially parallel to the surface of the magnetic disk so as to hold the tip of the suspension at a predetermined position in the rotation direction of the suspension. 2. The head loading device for a disk characteristic evaluation device according to claim 1, comprising: 3. The load main body is provided with a stopper member that regulates a loading / unloading amount of the moving mechanism so as to be capable of fine adjustment movement on a movement locus of the moving mechanism. A head loading device for a disk characteristic evaluation device as described in 2.