JPH02192079A - Carriage supporting structure for magnetic disk device - Google Patents

Abstract

PURPOSE:To hardly generate an off-track by supporting a block, for which one side guide roller is provided, through a leaf spring flexible in a carriage direction and further energizing the block in the carriage direction by using a spring. CONSTITUTION:For a carriage 11, a guide 11a provided on one side part is supported by guide rollers 12 and 13 and another guide 11d is supported by guide rollers 15 and 16 respectively so as to straightly advance and move. A block 17 provided with guide rollers 15 and 16 is supported by the leaf spring 19 and energized in the carriage direction by a spring 19. Thus, the oscillation of a carriage itself generated by the movement of the carriage and oscillation from the external part of the carriage are suppressed. Then, a mechanism, in which the off-track is hardly generated, is obtained.

Description

[Detailed Description of the Invention] [Summary] This invention relates to a carriage support structure for a magnetic disk device that supports a carriage capable of moving in a straight line to move a head that writes/writes data to a magnetic disk to a target track. The purpose of the present invention is to provide a carriage support mechanism for a magnetic disk device that suppresses vibrations of the carriage itself caused by movement and vibrations from the outside of the carriage, and prevents off-track from occurring. A guide is provided on one wall surface of the housing and includes a surface of the housing and a second surface facing diagonally downward. A guide roller is provided in contact with the
a block provided with guide rollers that abut the first and second surfaces of the other guide of the carriage on the other wall surface of the housing is supported via a leaf spring that is flexible in the direction of the carriage; Furthermore, the block is configured to be biased toward the carriage using a spring.

[Industrial Application Field] The present invention relates to a carriage support structure for a magnetic disk device that supports a carriage capable of rectilinear movement for moving a head that reads/writes data to a magnetic disk to a target track.

In magnetic disk drives, efforts are being made to increase storage density in order to increase storage capacity.

When the storage density is increased, off-track is more likely to occur during access. Therefore, there is a need for a carriage support mechanism for a magnetic disk device in which off-track is less likely to occur.

[Prior Art] Next, a conventional example will be explained using the drawings. FIG. 4 is a configuration diagram illustrating a carriage support structure of a conventional magnetic disk device.

In the figure, reference numeral 1 denotes a carriage provided with a head arm assembly 2 provided with a head for reading/writing data onto a magnetic disk, and a voice coil motor serving as a driving source. On both sides of this carriage 1,
A first surface 1a, lb facing upward and a second surface 1c facing downward.

Guides le, if with 1d are provided.

One wall surface of the housing 3 is provided with one guide 1e of the guides le and if provided on both sides of the carriage 1.
A guide roller 4.5 is provided via a guide roller block 6, which abuts on the first and second surfaces 1a, 1c.

A guide roller block 7 is provided on the other wall surface of the housing 3. The guide roller block 7 is provided so as to be slidable in the direction of the first surface 1b of the other guide 1f of the carriage 1, and is supported by a spring 8. A guide roller 9 that is biased in the direction of the first surface 1b of the guide 1f and presses against the first surface 1b, and a guide roller 10 that comes into contact with the second surface 1d of the guide 1f of the carriage 1 are provided. .

The carriage 1 is movable in a direction perpendicular to the paper surface.

Next, the operation of the above configuration will be explained. By applying current to a voice coil motor (not shown), the carriage 1 moves in a direction perpendicular to the plane of the paper, and a head provided on a head arm assembly accesses a desired track on the magnetic disk.

[Problems to be Solved by the Invention] In the conventional example with the above configuration, the preload direction of the guide roller 9 is perpendicular to the surface 1b facing diagonally upward;
It is the direction. Therefore, if the inclination of the surface 1b is 45 degrees with respect to the horizontal direction, the horizontal component force and the vertical component force will each be 72 times the pressing force, ensuring sufficient horizontal and horizontal pressing forces. The problem is that it cannot be done. If sufficient pressing force in the horizontal and vertical directions cannot be secured, vibrations caused by the movement of the carriage 1 itself and vibrations transmitted from the spindle motor etc. to the carriage 1 cannot be suppressed, resulting in off-track. be.

Moreover, in this case, if the urging force of the spring 8 is increased in order to secure the pressing force in the horizontal and vertical directions,
There is also the problem that the first surface 1b and the guide roller 9 are subject to abnormal wear.

The present invention has been made in view of the above-mentioned problems.The purpose of the present invention is to suppress the vibrations of the carriage itself generated from the movement of the carriage and the vibrations from outside the carriage, and to support the carriage of a magnetic disk device in which off-track is less likely to occur. The goal is to provide a mechanism.

[Means for Solving the Problems] FIG. 1 is a diagram showing the principle of the present invention. In the figure, reference numeral 11 denotes a carriage that moves a head that reads/writes data from/to a magnetic disk to a target track.

lla is a guide provided on one side of the carriage 11 and has a first surface 11b facing diagonally upward and a second surface 11C facing diagonally downward; lld is a guide provided on the other side of the carriage 11; The guide is provided with a first surface 11e facing diagonally upward and a second surface 11f facing diagonally downward. 12.13 is the housing 14
This is a guide roller that is provided on one wall surface of the carriage 11 and comes into contact with the first and second surfaces 11b and 11C of the guide of the carriage 11. 15 and 16 are guide rollers provided on the block 17 and contact the first surface 11e and second surface 11f of the guide llf of the carriage 11; 18 is the block 18;
is supported on the other wall surface of the housing 14, and the carriage 1
A leaf spring 19 that is flexible in one direction is a spring that urges the block 17 toward the carriage 11.

[Function] In the magnetic disk carriage support structure shown in FIG. 1, the carriage 11 has a guide l provided on one side.
The guide la is supported by guide rollers 12 and 13, and the other guide lld is supported by guide rollers 15 and 16 so as to be movable in a straight line.

The block 17 provided with guide rollers 15 and 16 is supported by a leaf spring 18 and urged toward the carriage 11 by a spring 19.

[Example] Next, an example of the present invention will be described using the drawings. Second
The figure is a configuration diagram explaining one embodiment of the present invention, and FIG.
It is a view taken along arrow A in the figure.

In these figures, reference numeral 21 denotes a carriage provided with a head arm assembly 22 provided with a head for reading/writing data on a magnetic disk and a voice coil motor serving as a driving source. This carriage 2
1 have first surfaces 21a and 21b facing upward.
Guides 21e and 21f having second surfaces 21c and 21d facing downwardly are provided.

Guide rollers 24 and 25 are provided on one wall surface of the housing 23 and come into contact with the first and second surfaces 21a and 21c of one of the guides 21e and 21f provided on both sides of the carriage 21. roller block 26
It is provided through.

A guide roller block base 27 is attached to the other wall surface of the housing 23. One end of a leaf spring 29 that is flexible in the direction of the carriage 21 is attached to the guide roller block base 27 using a screw 28 . 30 tightens the screw 28 evenly with the leaf spring 2
This is a spacer that transmits the signal to 9.

A roller block 31 is provided at the other end of the leaf spring 29, and this roller block 31 is rotated in the direction of the carriage 21 by a spring 32 that engages with the guide roller block base 27 at one end and the roller block 31 at the other end. (
It is biased in the direction of the arrow ■ in the figure. Further, on this guide roller block 31, there is a guide roller 3 that presses against the first surface 21b of the guide 21f of the carriage 21.
3, and a guide roller 34 that presses against the second surface 21d of the guide 21f.

Next, the operation of the above configuration will be explained. The carriage 2 is
1 moves in a direction perpendicular to the plane of the paper, and a head provided on a head arm assembly accesses a desired track on the magnetic disk.

According to the above configuration, the biasing force of the spring 32 is divided into two and presses the carriage 21 via the guide rollers 15, 16. Therefore, the pressure applied to the first and second surfaces 21b and 21d of the guide 21f of the carriage 21 is also divided into two, so that the pressure applied to the first and second surfaces 21. b, 21d is reduced, and furthermore, since the entire force of the spring 32 (=1) becomes a force that presses the carriage 1 in the horizontal direction, horizontal vibration of the carriage 11 can be reliably suppressed.

Further, since the cross-sectional shape of the leaf spring 21 is a rectangular shape elongated in the vertical direction, the section modulus is high, and the movement of the carriage 21 in the vertical direction is restrained by the leaf spring 29 . Therefore, vibrations of the carriage 21 itself generated from movement of the carriage 21 and vibrations from outside the carriage 21 such as the spindle motor are suppressed, and off-track is less likely to occur.

[Effects of the Invention] As described above, according to the present invention, guides are provided on both sides of the carriage, each consisting of a first surface facing diagonally upward and a second surface facing diagonally downward, and one wall surface of the housing is provided with a guide roller that comes into contact with the first and second surfaces of one of the guides provided on both sides of the carriage, and a guide roller that contacts the first and second surfaces of one of the guides provided on both sides of the carriage is provided, and a first surface of the other guide of the carriage is provided on the other wall surface of the housing. A block provided with a guide roller that contacts the surface and the second surface is supported in the direction of the carriage via a flexible leaf spring, and the block is further biased in the direction of the carriage using the spring. As a result, it is possible to realize a carriage support mechanism for a magnetic disk device in which vibrations of the carriage itself caused by movement of the carriage and vibrations from outside the carriage are suppressed, and off-track is less likely to occur.

[Brief explanation of the drawing]

Fig. 1 is a diagram of the principle of the present invention, Fig. 2 is a configuration diagram illustrating an embodiment of the present invention, Fig. 3 is a view taken in the direction of arrow A in Fig. 2, and Fig. 4 is a carriage of a conventional magnetic disk device. It is a block diagram explaining a support structure. 1 to 3, 1], 2] are carriages, 11a, 11. d, 21e, 21f are guides, 11b,
11e, 21a, 21b are the first surfaces, 11e, llf,
21c, 21d are second surfaces, 12.13, 15, 16,
24, 25, 33° 34 is a guide roller, 17.31 is a block, 18.29 is a leaf spring, and 19.32 is a spring.

Claims (1)

[Claims] A carriage (11
) in a carriage support structure for a magnetic disk device capable of moving in a straight line, first surfaces (11b, 11e) facing diagonally upward and second surfaces (11c facing diagonally downward) are provided on both sides of the carriage (11). , 11f), and the carriage (11a, 11d) is provided on one wall of the housing (14).
One of the guides provided on both sides of 1) (
guide rollers (12, 13) abutting on the first and second surfaces (11b, 11c) of the housing (11a); and the other guide (11d) of the carriage (11) on the other wall of the housing (14). the first side and the second side of
The guide rollers (15
, 16) is supported via a flexible leaf spring (18) in the direction of the carriage (11), and further, the block (17) is moved toward the carriage (11) using a spring (19). (11) A carriage support structure for a magnetic disk device, characterized in that it is biased in the direction.