JPH08106745A - Magnetic head fixture - Google Patents

Abstract

PURPOSE: To conduct mounting or dismantling simply, and to position a magnetic head accurately. CONSTITUTION: In a magnetic head, a slider is installed at one end, and a gimbal-bar with an opening is set up near the other end. A head-mounting base section 32 is fitted at one end of a main body block 28. A recessed section having width slightly larger than the width of the gimbal-bar is formed on one surface side of the opposed surface of the mounting base section, and a guide hole is formed while being displaced to one side surface side of the recessed section in the recessed section. An opening is shaped at a place corresponding to the guide hole in the main body block, and a clamping-shaft is arranged into these guide hole and opening. The clamping-shaft is deviated to the main body block side, an operating section 60 is projected from the opening of the clamping-shaft, and a clamp section 62 with a tapered head section smaller than the opening of the gimbal-bar is projected into the recessed section.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic head attaching device for attaching a magnetic head to a magnetic head supporting member in a magnetic disk testing apparatus.

[0002]

2. Description of the Related Art In a magnetic disk testing apparatus, a magnetic head is mounted on a suitable magnetic head supporting member. The magnetic head comprises a gimbal bar, which is a metal elastic plate piece, and a slider, which is an electric element for writing and reading data at one end of the gimbal bar. The gimbal bar has a mounting hole at the other end. When attaching the magnetic head to the support member,
It is common practice to screw a male screw into a female screw provided on a support member through a mounting hole of a gimbal bar. However, the drawbacks of this mounting method are that it is time-consuming and that it is difficult to mount the magnetic head in the correct position with respect to the support member due to the play of the mounting holes of the gimbal bar. In the test of the magnetic disk, since the position information and the like are not written on the magnetic disk, it is impossible to recognize the tested position of the magnetic disk by electrical processing. Therefore, since the position to be tested is determined by the mechanical position of the magnetic head, the mounting accuracy of the magnetic head with respect to the supporting member becomes important.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a magnetic head attaching device which can attach the magnetic head to the magnetic head supporting member at an accurate position and by a simple operation.

[0004]

SUMMARY OF THE INVENTION A magnetic head mounting device according to the present invention includes a slider and a magnetic head having a gimbal bar having a slider mounted at one end and an opening near the other end, and one surface of a facing surface of a tip. A support member in which a recess having a width slightly larger than the width of the gimbal bar is formed, and a guide hole is formed in the recess by being displaced to one side surface side of the recess; and a support member disposed in the guide hole of the support member. And a clamp shaft which is biased to the other surface side of the facing surface of the gimbal bar and has a protruding protruding portion with a tapered head smaller than the opening of the gimbal bar.

[0005]

[Function] The biasing operation portion of the clamp shaft is pressed to cause the tapered head portion of the clamp portion to protrude from the recess, and the clamp shaft is passed through the opening of the gimbal bar to place the gimbal bar in the recess. Then, by releasing the pressing of the operating part, the tapered part of the clamp part presses the peripheral edge of the opening of the gimbal bar and presses it against the side surface of the recess, and also presses against the flat surface of the recess to mount the magnetic head. Therefore, it is possible to easily attach or detach the magnetic head and accurately position the magnetic head.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT FIG. 5 shows a magnetic head cartridge 10 incorporating the magnetic head mount of the present invention. The magnetic head cartridge 10 has a base portion 12 and an arm portion 16 rotatably attached to the base portion about a pin 14. The magnetic head attaching device 18 according to the present invention is fixed to the lower side of the tip of the arm portion 16 by a screw or the like. The magnetic head 20 comprises a gimbal bar 22 and a slider 24 attached to the tip of this gimbal bar. The slider 24 is an electric element that writes or reads data on the magnetic disk as described above.
The magnetic head 20 is made into the arm portion 16 by attaching the other end of the gimbal bar 22 to the head attaching device 18. FIG. 5 shows a non-loading state in which the magnetic head does not come into contact with the magnetic disk, and the arm 16 is rotated by an appropriate driving means (not shown) until the left upper surface of the arm 16 contacts the stop plate 26. Then, the magnetic head 20 enters the loading state. The base portion 12 is attached to a carriage mechanism (not shown), which controls the movement of the magnetic head 20 on the magnetic disk.

1 and 2 show the magnetic head attaching device 18 removed from the arm portion 18 with the magnetic head 20 attached. 1 is a plan view of the side on which the magnetic head mount 18 is mounted, and FIG. 2 is a front view. The magnetic head attaching device 18 can attach two magnetic heads in order to shorten the test time, but in these figures, in order to show both the attached state and the non-attached state of the magnetic head 20, One magnetic head 20
Is attached.

The magnetic head mounting device 18 includes an arm portion 1
6 has a body block 28 fixed by screws or the like. The main body block 28 has a U-shaped cutout portion 30 that engages with a positioning pin provided on the arm portion 16 for positioning when fixing the main body block 28 to the arm portion 16. As shown in FIG. 4, a step portion is formed below the tip of the main body block 28 so as to have a smaller thickness than other portions, and a gimbal bar 22 of the magnetic head 20 is attached to the step portion. The head mounting base 32 is fixed by screws 34.

The head mounting base 32 is an elongated piece, and is formed with a groove 34 extending in the longitudinal direction at the center on one side of a pair of opposing surfaces and a pair of projecting edges 36 extending parallel to both sides thereof, and the other side. On the side, a positioning pin 38 is provided at the center of the plane. A U-shaped notch 40 is formed at the center of the tip of the body block 28 on the side where the step is formed. The mounting base 32 is provided in a state where the positioning pin 38 is engaged with the notch 40. Are attached to the body block 28.
The protrusion 36 of the mounting base 32 is formed with two pairs of grooves 42 and 44 in a direction perpendicular to the direction in which it extends.
The spacing between each pair of grooves 42 and 44 is slightly wider than the width of the gimbal par 22. Two head mounting portions 46 and 48 are formed by forming the step portion by shortening the projecting edge portion 36 sandwiched by the grooves 42 and 44 of each pair as compared with the other portions. In order to mount the magnetic head 20 at a predetermined position and angle accurately, the planes of the head mounting portions 46 and 48 and the side surface of the groove on which the gimbal bar 22 is pressed, as will be described later, the groove 42 in FIG. The left side surface of each of 44 and 44 is formed in a predetermined shape. The grooves 42 and 44 are for facilitating such processing and are not an indispensable structure.

As described above, the magnetic head 20 is attached to the head attaching portions 46 and 48, and its attaching mechanism will be described with reference to FIG. 3 which is a sectional view taken along the line A--A in FIG. . The head mounting bases 32 are provided at the head mounting portions 46 and 48 of the head mounting base 32.
A guide hole 50 penetrating therethrough is formed. Guide hole 50 is groove 3
4 has a large-diameter portion 52 having a larger diameter than the other portions at the end opposite to 4. The body block 28 that contacts the mounting base 32 has an opening 54 at a portion corresponding to the guide hole 50. The clamp shaft 56 is disposed in the opening 54 and the guide hole 50. The clamp shaft 56 has a sliding portion 58 that slides in the guide hole 50, a smaller diameter than the sliding portion, extends through the opening 54 to the outside of the main body block 28, and the tip has a larger diameter than the other portions. Operation part 60 which became
And a clamp portion 62 provided with a tapered head portion extending from the sliding portion into the groove 34 and expanding toward the tip.

A ring 64, which is, for example, an E ring, is fitted to the end of the operating portion 60 on the sliding portion 58 side. Ring 6
4 is a large diameter portion 52 of the guide hole 50 and the main body block 28.
It fits in the annular gap formed by the above, and prevents the clamp shaft 56 from coming off toward the opening 54 side. However, if the diameter of the opening 54 is made smaller than the diameter of the guide hole 50, such a large diameter portion 52 and the ring 64 can be omitted. The operation portion 60 of the clamp shaft 56 is accommodated to accommodate the winding spring 6
6 is arranged, and the winding spring 66 is sandwiched between the operation portion 60 and the ring 68 having a smaller inner diameter than the large diameter portion of the tip of the operation portion 60 is inserted on the side opposite to the ring 64 to prevent the winding spring 66 from coming off. To prevent. The clamp shaft 56 is now
In the normal state, the operation portion 60 is biased upward and protrudes from the main body block 28, and the tip end surface of the clamp portion 62 is located substantially on the same plane as the plane of the attachment portion 46 indicated by the dotted line in the figure.
When the operating portion 60 is pressed, the clamp shaft 56 slides downward.

FIG. 4 is a sectional view taken along line BB in FIG. 3, and the attachment of the magnetic head 20 will be described with reference to FIG. Guide hole 50 provided in the head mounting portion 46
Note that the center of the is offset from the longitudinal center of the mounting portion 46, to the left in this figure. The magnetic head 20 has a mounting opening 68 larger than the diameter of the head of the clamp portion 62 in the center near one end of the gimbal bar 22. In order to attach the magnetic head 20, the head of the clamp portion 62 is pushed into the opening 68 while the operation portion 56 is pressed so that the head portion of the clamp portion 62 protrudes from the projecting edge portions 36 on both sides of the attachment portion 46. Through (FIG. 4A). The distance from the peripheral edge of the opening 68 to the end of the gimbal bar 22 is substantially equal to or slightly shorter than the distance from the peripheral edge of the guide hole 50 to the left end side surface of the groove 42. Well shorter than the distance to the right flank. Thus, the gimbal bar 22 can be placed in contact with the plane of the mounting portion 46, as shown in Figure 4B. Then, when the pressing of the operation portion 56 is released, the clamp shaft 56 returns to the biased state by the winding spring 66. The tapered portion of the clamp portion 62 has the opening 6 of the gimbal bar 22.
Abutting the periphery of the gimbal bar 22 and attaching the gimbal bar 22 to the groove 42 on the left side.
The gimbal bar 22 is stably attached to the attachment base 32 by pressing it against the side surface of the attachment portion 46 and pressing it against the plane of the attachment portion 46. When the head is attached, the head of the clamp portion 62 abuts on the same part of the peripheral edge of the gimbal bar 68, and the gimbal bar 22 is pressed against the side surface of the groove 42 formed at a predetermined position and angle.
The magnetic head can be positioned accurately.

[0013]

According to the magnetic head mounting device of the present invention, the operating portion of the clamp shaft that is biased is pressed to cause the tapered head portion of the clamp portion to protrude from the concave portion.
Pass the clamp shaft through the opening of the gimbal bar,
By placing the gimbal bar in the recess and releasing the pressing of the operating part, the tapered part of the clamp part presses the peripheral edge of the gimbal bar opening and presses it against the side surface of the recess, Since the magnetic head is attached by pressing, it can be easily attached or detached,
Moreover, the magnetic head can be accurately positioned.

[Brief description of drawings]

FIG. 1 is a plan view showing a magnetic head mounting device of the present invention.

FIG. 2 is a front view showing a magnetic head mounting device of the present invention.

FIG. 3 is a cross-sectional view showing in detail the mounting mechanism of the magnetic head mounting device of the present invention.

FIG. 4 is a sectional view for explaining the attachment of the magnetic head to the magnetic head attaching device of the present invention.

FIG. 5 is a side view showing a magnetic head cartridge adopting the magnetic head mounting device of the present invention.

[Explanation of symbols]

 18 Magnetic Head Mounter 20 Magnetic Head 22 Gimbal Bar 24 Slider 28, 32 Supporting Member 46, 48 Recess 50 Guide Hole 56 Clamp Shaft 68 Opening

Claims (1)

[Claims] 1. A magnetic head including a slider and a gimbal bar having the slider attached to one end and having an opening near the other end, and a magnetic head having a width slightly larger than the width of the gimbal bar on one side of a surface facing the tip. A support member in which a recess is formed, and a guide hole is formed in the recess by being offset to one side surface side of the recess, and the other surface of the facing surface of the support member, which is disposed in the guide hole of the support member. A magnetic head mounting device comprising: a clamp shaft which is biased to the side to project an operating portion, and a tapered head smaller than the opening of the gimbal bar projects into the recess.