JPS62177775A - Carriage drive device for floppy disk device - Google Patents

Abstract

PURPOSE:To adjust tracking at high accuracy by simple work by operating an adjusting tool so as to move and adjust a carriage for adjusting tracking. CONSTITUTION:When a belt carriage fixed screw 27 is loosened, the carriage 13 becomes freely movable irrespective of the rotating force of a stepping motor 10. Tracking adjustment work for a magnetic head starts. An operator operates the adjusting tool 23 so as to insert an adjusting hole 25 for a rotating gear 24 into an adjusting boss 21. In that state the rotating gear 24 of the adjusting tool 23 is set so that it can engage with a linear gear 20 formed on a steel belt 12. In such a state, when the operator operates the grip part 26 of the adjusting tool 23 to rotate the rotating gear 24, the carriage 13 moves linearly in accordance with the rotating direction. Thus the rotating amount of the rotating gear 24 is adjusted, whereby the moving amount of the carriage 13 in the horizontal direction can be adjusted.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention 1] The present invention relates to a carriage drive device for a floppy disk drive having a movement adjustment function.

[Technical disadvantages of the invention and its problems] Conventionally, when manufacturing a floppy disk device, it is necessary to adjust the movement of a carriage to adjust the tracking of a magnetic head mounted on the carriage. Here, as shown in FIG. 4 (plan view), a pulley 11 is attached to the rotating shaft of a stepping motor 10, and steel bells 1 to 12 wound around the pulley 11 are attached to the carriage drive structure. is attached to a part of the carriage 13.

The carriage 13 includes a pulley 11 and a steel belt 12 that convert the rotational force of the stepping motor 10 into linear motion.
As a result, the robot moves in a straight line while being guided by the rails 14. A magnetic head (not shown) is mounted on the tip of the kit carriage 13, and as the carriage 13 moves, the magnetic head performs a seek operation on the magnetic recording medium.

By the way, in the tracking adjustment work described above, when mounting the stepping motor 10, the screw 15 is heated and the main body of the stepping motor 10 is rotated in the circumferential direction. As a result, the key 17 and the carriage 13 are moved through the pulley 11 and the steel belt 12, and the magnetic head can be positioned at a predetermined position. When the positioning is completed, the stepping motor 10 is fixed by tightening the screw 15 for installation.

However, in the above method, if the stepping motor 10 is installed under the frame 16 of the disk device, it is necessary to overturn the device body during adjustment. Therefore, when the main body of the apparatus is returned to its original state after adjustment, the positioning of the carriage 13 is likely to be misaligned.

Furthermore, when the stepping motor 10 is mounted, the carriage 13 is likely to be misaligned when the screw 15 is tightened. Therefore, conventional tracking 1! The L adjustment method has problems such as poor workability and low adjustment accuracy.

[Object of the Invention 1] An object of the present invention is to provide a carriage drive device for a floppy disk device that allows L. racking adjustment to be performed easily and reliably.

[Summary of the Invention] The present invention provides a belt-type carriage IfaJ! that converts the rotational force of a stepping motor into linear motion using a belt.
4 is a carriage drive device equipped with an adjustment mechanism means for adjusting the movement of the carriage. The adjustment mechanism means uses a rotary gear that engages with a linear gear provided on a part of the belt or a part of the carriage, and adjusts the movement of the carriage by rotating this rotary gear from the outside. It is composed of

[Embodiment of the Invention] An embodiment of the present invention will be described below with reference to the drawings. 1st
FIG. 2 is a plan view showing a partial structure of a carriage drive device according to an embodiment of the present invention, and FIG. 2 is a perspective view showing the structure of an adjustment tool used in the same embodiment. In Figure 1,
The carriage 13 is configured to move in a linear direction while being guided by a rail 14 held by a rail fixing member 17. The carriage 13 is moved in a linear direction by a pulley 11 and a steel belt 12 that convert the rotational force of the stepping motor 10 into linear motion. A pulley 11 is attached to the rotating shaft of a stepping motor 10, and a steel belt 12 wound around the pulley 11 is attached to a part of a carriage 13. As shown in FIG. 1, a linear gear 20 is formed on the steel belt 12 in parallel to the moving direction of the carriage 13. Furthermore, an adjustment boss 21 is formed in a part of the carriage 13.

ry4 maintenance unnecessary boss 21 This is a protrusion corresponding to the adjustment hole 25 formed in the rotating gear 24 of the adjustment tool 23 shown in FIG. The adjustment tool 23 includes a grip portion 26 for rotating the rotating gear 24. In addition, other configurations are as described in the fourth
Since it is similar to the figure, the same reference numerals are given and the explanation is omitted.

Next, the operation of the same actual flow example will be explained. First, when the belt carriage fixing screw 27 shown in FIG.
Becomes able to move freely. Here, on the pulley 11 side, the steel belt 12 is tightened by a fixing screw 28. Furthermore, the stepping motor 10 is fitted with a fixing screw 1 at a predetermined position below the frame 16 of the disk device.
It is attached by 5. The pulley 11 is attached to the rotating shaft of a fixed stepping motor 10.

In this state, the tracking adjustment work of the magnetic head is started. The operator operates the adjustment tool 23 shown in FIG. 2 so that the ml hole 25 of the rotary gear 24 is inserted into the adjustment boss 21. As a result, as shown in FIG. 3, the rotating gear 24 of the adjusting tool 23
It is set to engage with a linear gear 20 formed in 2. In this state, when the operator operates the grip portion 2G of the WA trimming tool 23 to avoid rotating the rotary gear 24, the carriage 13 moves linearly in a direction corresponding to the rotational direction. Therefore, by adjusting the rotation opening of the rotary gear 24, the amount of movement of the carriage 13 in the front-rear direction is adjusted.

In this way, the movement of the carriage 13 can be adjusted by adjusting the rotational direction and rotational extent of the rotary gear 24 of the adjustment tool 23. For this reason, carriage 1
The tracking adjustment of the magnetic head mounted on the magnetic head 3 can be easily performed by rotating the adjustment tool 23.

After completing such adjustment work, the belt carriage fixing screw 27 is tightened to fix the carriage 13. Then, the adjustment tool 23 is removed from the adjustment boss 21. Therefore, there is almost no possibility that the position of the carriage 13 shifts after the position adjustment, and highly accurate tracking adjustment can be performed.

In the above embodiment, the linear gear 20 was formed on the steel belt 12, and the adjustment boss 21 was formed on the carriage 13 side. However, the present invention is not limited to this, and a configuration in which the linear gear 20 is formed on the carriage 13 side may also be used.

[Effects of the Invention] As described in detail above, according to the present invention, movement of the carriage for tracking adjustment can be adjusted simply by operating the adjustment tool 23. Therefore, for tracking adjustment, it is possible to eliminate the need for mounting and removing the stepping motor, and for that purpose, the work of overturning the main body of the one-isk device.

Therefore, it is possible to perform highly accurate tracking adjustment with a simple operation, and as a result, the manufacturing process of the floppy disk device can be simplified and made more efficient.

[Brief explanation of drawings]

FIG. 1 is a plan view showing a partial structure of a carriage drive device according to an embodiment of the present invention, FIG. 2 is a perspective view showing the structure of an adjustment tool of the same embodiment, and FIG. 3 is an operation of the same embodiment. FIG. 4 is a plan view showing a partial configuration of a conventional carriage drive device. 10...Stepping motor, 11...Pulley, 1
2... Steel belt, 13... Carriage, 20
...Linear gear, 21...Adjustment boss, 23...
Adjustment tool, 24...rotating gear.

Claims (1)

[Claims] In a belt-type carriage drive device that converts the rotational force of a stepping motor into linear motion to drive a carriage on which a magnetic head is mounted, a pulley attached to the rotating shaft of the stepping motor and a pulley attached to both the pulley and the carriage are provided. A belt that converts the rotational force of the stepping motor into linear motion, and a rotary gear that engages with a linear gear provided on a part of the belt or a part of the carriage, and this rotary gear is externally rotated. 1. A carriage drive device for a floppy disk device, comprising: adjustment mechanism means for adjusting the movement of the carriage by adjusting the movement of the carriage.