JPH0737367A - Method for assembling cartridge type disk drive device - Google Patents

Abstract

PURPOSE:To obtain a method for assembling accurately and easily so that a spindle motor supported on a substrate in a cartridge type disk drive device and a head supported on a base are positioned optimally. CONSTITUTION:A base 1 is engaged to a positioning tool 18 for base by a positioning hole 28 and a positioning pin 21. A substrate 2 where a spindle motor 4 is provided is engaged a positioning tool 19 for substrate by using a positioning hole 29 and a positioning pin 25. The positioning tool 18 for base is moved along with the base 1, thus adjusting the positions of the base 1 and the substrate 2. After the adjustment, the base 1 and the substrate 2 are assembled with a screw 33 utilizing a mounting hole 30 and a screw hole 31, thus laying out the head and the spindle motor 4 in an optimum position relationship.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cartridge type disk drive device, and more particularly to a method for assembling a cartridge type disk drive device having a high capacity in recent years, and more particularly to a method for assembling a base and a substrate supporting a spindle motor.

[0002]

2. Description of the Related Art FIG. 3 is an exploded perspective view showing a conventional cartridge type disk drive device, and FIG. 4 is a perspective view showing an assembling method of a base and a substrate supporting a spindle motor in the cartridge type disk drive device.

In FIG. 3, 1 is a base, 2 is a substrate, a wiring pattern (not shown) of a motor drive system is provided, a circuit component 3 of the motor drive system is mounted and fixed to the base 1. 4 is supported by the substrate 2 and the hole 1a of the base 1
A spindle motor 5 inserted through the ejector 5; an eject lever 5 slidably supported by the base 1; a holder 6 vertically movably supported by the eject lever 5 for holding a disc cartridge (not shown) detachably; Is a side 0 magnetic head, 8 is a side 1 magnetic head, 9 is a carriage and head arm for supporting the magnetic heads 7 and 8, and is supported by the base 1 so as to be movable in the radial direction of the magnetic disk of the disk cartridge. Head support device. In addition, although not shown, the base 1 supports a head positioning device, a lever for opening the shutter of the disk cartridge, and the like.

Then, the disk cartridge is placed in the holder 6
When the shutter is opened, the shutter of the disk cartridge is opened by the shutter opening lever, the eject lever 5 moves forward and the holder 6 and the disk cartridge descend, and the magnetic disk built in the disk cartridge is transferred to the spindle 10 of the spindle motor 4 or the like. Put on. Further, the head arm of the head supporting device 9 descends as the holder 6 descends, and the shutter opening portion of the magnetic disk is sandwiched between the magnetic heads 7 and 8. Therefore, the magnetic disk is rotated by driving the spindle motor 4, and the magnetic heads 7 and 8 record / reproduce information on / from the magnetic disk.

In the cartridge type disk drive apparatus as described above, in order to assemble the base 1 and the substrate 2 supporting the spindle motor 4, as shown in FIG. Positioning pin 1
1 and the positioning holes 12 of the board 2 are engaged, and screws 14 are screwed into the screw holes 15 of the base 1 from the mounting holes 13 at a plurality of positions of the board 2 to fix the base 1 and the board 2. As a result, the magnetic disk and the magnetic head 7 of the head supporting device 9,
8 is determined, and the recording and reproducing positions of information on the magnetic disk are determined.

[0006]

However, in the structure of the conventional example as described above, the positioning pin 10 is provided on the base 1.
And the number of parts increases. When the substrate 2 is assembled to the base 1, the positions of the spindle motor 4 supported on the substrate 2 and the magnetic heads 7 and 8 of the head supporting device 9 slidably supported on the base 1 are as follows. It is determined by the positioning pin 11 attached to the base 1 and the positioning hole 12 of the substrate 2, and is affected by their accuracy.
Further, the positioning hole 12 of the substrate 2 and the positioning pin 11 of the base 1 are engaged and positioned.
Since a gap of about μm is generated, an error of about 3 minutes occurs in the azimuth, which is an angle in the tangential direction between the magnetic heads 7 and 8 and the magnetic disk built in the disk cartridge, which makes it difficult to increase the capacity of the device. It was.

The present invention solves such a conventional problem, and can be easily assembled with high precision so that the relative position between the spindle motor and the head becomes optimum.
Therefore, it is an object of the present invention to provide a method of assembling a cartridge type disk drive method capable of increasing the capacity.

[0008]

In order to achieve the above object, the present invention adjusts the positions of the base and the substrate by moving at least one of the base and the substrate provided with a spindle motor by a jig. After the positioning, the base and the substrate are fixed after the positioning.

In the above technical means, after the disc cartridge is ejected from the holder in the assembling process, the base and the substrate can be fixed with screws through the holes formed in the holder.

[0010]

Therefore, according to the present invention, at the time of assembling the base and the substrate, at least one of the base and the substrate is moved by a jig to adjust its position, so that the head support slidably provided on the base. The relative position between the head of the device and the spindle motor supported by the substrate can be accurately assembled.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing an assembling method of a cartridge type disk drive device according to an embodiment of the present invention, and FIG.
FIG. 3 is a plan view showing a cartridge-type disk drive device that has been assembled by the same assembling method.

In FIGS. 1 and 2, 1 is a base, 2 is a substrate fixed to the base 1, 3 is a circuit component mounted on the substrate 2, 4 is supported by the substrate 2, and the hole 1a of the base 1 is inserted. A spindle motor, 5 is an eject lever slidably supported by the base 1, 6 is a vertically movable holder supported by the eject lever 5, and is a holder for detachably holding a disc cartridge (not shown), and 9 is a side. A head supporting device having a carriage supporting a magnetic head of 0 and a head arm supporting a magnetic head of a side 1 and supported on a base 1 so as to be movable in a radial direction of a magnetic disk of a disk cartridge. In addition, although not shown, a head positioning device 16, a lever for opening the shutter of the disk cartridge, and the like are supported by the base 1. The function of each of these units is the same as that of the above-mentioned conventional example, and therefore its explanation is omitted.

In order to adjust the position of the base 1 and the substrate 2 on which the spindle motor 4 is supported and to assemble them, the base positioning jig 18 and the substrate positioning jig 19 shown in FIG.
And are used.

The base positioning jig 18 comprises a base 20 and positioning pins 21. One side of the base 20 is opened, and the base 20 is formed in a U-shape that is recessed from the open side. Positioning pins 21 are provided upright on both end portions of the base 20 on the open side. Each positioning pin 21 has a small diameter portion 22 on the top.
Is formed, and a support surface 23 perpendicular to the axis is formed at the base of the small diameter portion 22. The board positioning jig 19 includes a base 24 and position pins 25. A part of the base 24 is formed in a rectangular shape so as to correspond to the recessed portion of the base 20, and positioning pins 25 are erected on both short side edges of the base 24. Each of the position pins 25 has a small diameter portion 26 formed on an upper portion thereof, and a support surface 27 in a direction perpendicular to the axial center is formed on a base portion of the small diameter portion 26. That is, a part of the base 24 of the board positioning jig 19 is a part of the base 20 of the base positioning jig 18.
The line connecting the axis centers of the positioning pins 21 and 21 and the line connecting the axis centers of the positioning pins 25 and 25 are arranged so as to be orthogonal to each other in a state of being located in the recessed portion.

The base positioning jig 18 is orthogonal to the board positioning jig 19 in the directions X and Y, that is, the direction connecting the positioning pins 21 and 21 and the positioning pins 21 and 21.
It can be moved in the direction orthogonal to the line connecting the lines.

On the other hand, the base 1 is formed with a positioning hole 28 through which the small diameter portion 22 of each positioning pin 21 is inserted, and the substrate 2 is formed with a positioning hole 29 through which the small diameter portion 26 of each positioning pin 25 is inserted. Keep it. Also, the base 1 and the substrate 2
The mounting holes 30 and the screw holes 31 are formed at a plurality of locations (four locations in the illustrated example) corresponding to the assembly target positions. Also,
A large-diameter screw operating hole 32 is formed in the eject lever 5 and the holder 6 at a position where the mounting hole 30 is closed on the plane, corresponding to the mounting hole 30.

Next, the assembly process will be described. First, the small diameter portion 26 of the positioning pin 25 of the board positioning jig 19 is inserted into the positioning hole 29 of the board 2 supporting the spindle motor 4, and the board 2 is positioned. The small diameter portion 22 of the positioning pin 21 of the base positioning jig 18 is inserted into the positioning hole 28 of the base 1 by engaging with the support surface 27 of the base 25 so as to have a space above the base 24. , The base 1 is engaged with the support surface 23 of the positioning pin 21 and positioned so as to have a space above the base 20. Next, the base positioning jig 18 is slid in two orthogonal directions of the X direction and the Y direction with respect to the board positioning jig 19 to adjust the position of the base 1 with respect to the board 2 in the X direction and the Y direction. . Therefore, the head support device 9 supported by the base 1, that is, the magnetic head is adjusted to the optimum position with respect to the spindle motor 4 supported by the substrate 2 using the space above the base 20. You can After the position adjustment, the base 1 and the substrate 2 are assembled. That is, the screw 33 is screwed into the screw hole 31 of the substrate 2 from the mounting hole 30 of the base 1 to fix them, but at that time, the positions of the spindle motor 4 and the magnetic head are confirmed by the magnetic disk built in the disk cartridge. When the output value of the disc is used, as shown in FIG. 2, the holder 6 and the eject lever 5 are assembled to the base 1, so that the screw 33 from the screw operation hole 32 to the mounting hole 30 of the base 1. It is passed through and screwed into the screw hole 31 of the substrate 2 to fix them.

In this way, the cartridge type disk drive constructed by the above-mentioned parts can easily assemble the relative position between the spindle motor 4 and the magnetic head of the head support device 9 with high accuracy, and has a higher capacity than before. Can be realized. Further, since it is not necessary to attach the positioning pin to the base 1 as in the conventional example, the number of parts can be reduced.

In the above embodiment, the position adjustment is performed by moving the base 1 side, but the substrate 2 side may be moved, or both may be moved to perform the position adjustment.

[0021]

As described above, according to the present invention, since at least one of the base and the board is moved by the jig to adjust the assembling position thereof, the spindle motor provided on the board and the base It is possible to easily assemble the head supporting device provided at the position with the head, that is, azimuth with high precision and with high accuracy, and thus to increase the capacity of the cartridge-type disk drive device.

[Brief description of drawings]

FIG. 1 is a perspective view showing an assembling method of a cartridge type disk drive device according to an embodiment of the present invention.

FIG. 2 is a plan view showing a cartridge-type disk drive device completed assembling by the same assembling method.

FIG. 3 is an exploded perspective view showing a conventional cartridge type disk drive device.

FIG. 4 is a perspective view showing an assembly method of a conventional cartridge-type disk drive device.

[Explanation of symbols]

 1 Base 2 Board 4 Spindle Motor 5 Eject Lever 6 Holder 9 Head Support Device 18 Base Positioning Jig 19 Board Positioning Jig 21 Positioning Pin 25 Positioning Pin 28 Positioning Hole 29 Positioning Hole 30 Mounting Hole 31 Screw Hole 32 Operation Hole 33 screws

Claims (2)

[Claims] 1. A base and a substrate provided with a spindle motor are moved by a jig to adjust and position the base and the substrate, and after the positioning, the base and the substrate are fixed. And a method for assembling a cartridge type disk drive device. 2. The assembly of the cartridge type disk drive device according to claim 1, wherein after the disk cartridge is ejected from the holder in the assembling step, the base and the substrate are fixed by screws through the holes formed in the holder. Method.