JPH0762944B2 - Positioning device for loading device in disk type recording medium driving device - Google Patents

Description

The present invention relates to a disk-type recording medium driving device (for example, a disk-type recording medium inspection device) including a loading device for a read / write head, and the loading device and the reading / writing device. The present invention relates to a device for positioning a carriage of a recording head, and in particular, in a disc type recording medium drive device capable of driving any of a plurality of types of disc type recording mediums having different diameters, the diameter of the disc type recording medium The present invention relates to a device in which the loading device and the carriage can be positioned at different positions according to the difference.

[Conventional technology]

In the conventional magnetic disk inspection device, one kind of magnetic disk having a certain diameter (for example, 3.5 inch type disk,
Alternatively, only a 5-inch type disk) is to be inspected, and there is no one inspection apparatus capable of inspecting a plurality of types of magnetic disks having different diameters.

Therefore, in such a conventional magnetic disk inspection apparatus, the positions where the loading device and the carriage should be positioned when loading or unloading the read / write head (hereinafter referred to as the loading and unloading positions and the contact start / stop position, respectively) ) Is always constant corresponding to the diameter of the magnetic disk, so that when loading or unloading, a constant loading and unloading position,
Loading device at contact start / stop position,
I should have positioned the carriage.

[Problems to be solved by the invention]

However, the applicant has recently developed a magnetic disk inspection apparatus capable of inspecting any of a plurality of types of magnetic disks having different diameters (for example, 3.5 inch type disks and 5 inch type disks), and in connection with this, load and It has become necessary to make the unloading position and the contact start / stop position different according to the difference in the diameter of the magnetic disk to be inspected.

The present invention has been made in view of the above points, and it is an object of the present invention to provide a positioning device capable of positioning a loading device and a carriage at different loading and unloading positions and contact start / stop positions depending on the difference in diameter of a magnetic disk. It is what

In the present specification, a portion of the disk type recording medium driving device including both the carriage and the loading device is generically called a carriage mechanism.

[Means for solving problems]

A positioning device for a loading device according to the present invention comprises a stopper member (33) which is displaceable within a predetermined range along a moving direction of the loading device (8) and a plurality of different sizes of the stopper member (33). And a stopper positioning means (34, 35, 36, 37) for selectively positioning at any one of a plurality of fixed positions corresponding to each of the recording discs. By positioning the stopper member (33) at any one fixed position and bringing the loading device (8) into contact with the stopper member (33) positioned at the one fixed position, the stopper member (33) is moved to each fixed position. The loading device (8) at any one of a plurality of corresponding loading and unloading positions
Is selectively positionable.

[Work]

By positioning the stopper members by the stopper positioning means according to the diameters of a plurality of types of magnetic disks to be inspected, the loading device can be easily positioned at the loading and unloading positions for each magnetic disk. Further, since the carriage and the loading device maintain a relative positional relationship between the carriage and the loading device at least while the loading device unloads the read / write head, the positioning of the loading device causes the carriage and The magnetic disk can be positioned at the contact start / stop position.

〔Example〕

An embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 2 shows an example of a carriage mechanism that employs the positioning device of the loading device according to the present invention. This carriage mechanism is used in a magnetic disk inspection device capable of inspecting both 3.5 inch type disks and 5 inch type disks.

In the figure, a carriage 1 is placed on a carriage rail 2, and a coil portion 3a of a voice coil motor 3 is attached to a rear portion (a right side portion in the drawing) of the carriage 1. Further, a magnet portion 3b of the voice coil motor 3 is provided behind the carriage 1 separately from the carriage 1. The carriage 1 moves on the rail 2 by driving the voice coil motor 3.

As shown in FIG. 3, read / write heads 4b to 7b are supported in a multi-layered manner on the carriage 1 through leaf spring-shaped head gimbals 4a to 7a. (In FIG. 2, the head gimbals 4a to 7a and the heads 4b to 7b are not shown,
In FIG. 3, the carriage 1 and the like are shown in a simplified manner. The heads 4b and 5b correspond to the upper disk 23 of the two magnetic disks 23 and 24 having the same diameter, which are mounted in a multi-layered manner on a spindle portion (not shown) in the magnetic disk inspection apparatus. The heads 6b and 7b are
Corresponds to 24. As mentioned above, discs 23 and 24 have 3.5
It is an inch type disk or a 5 inch type disk. Further, as shown in the figure, a plate 19 is fixedly attached to the carriage 1 on the side of the carriage 1.

Returning to FIG. 2, the loading device 8 includes heads 4b to 7b.
Is to load and unload. The base blocks 27 and 28 of the loading device 8 are respectively supported by the loading device moving rail 25, and the base block 28 at the depth of the drawing is directed to the right side portion of the drawing in a direction substantially parallel to the rail 25. Piston rod of air cylinder 26
26a is fixedly connected. Loading device 8
Is moved along the rail 25 by the drive of the air cylinder 26.

The loading device 8 is provided with bearing brackets 9 and 10, and the bearing brackets 9 and 10 rotatably support loading bars 11 and 12, respectively. Third
As shown in the figure, the loading bar 11 is a head gimbal.
The loading bar 12 is located between the head gimbals 6b and 7b, and the loading bar 12 is located between the head gimbals 6b and 7b. (The bearing bracket 10 is not shown in the figure.)
The loading bar 11 has a long diameter part longer than the interval between the gimbals 4b and 5b and a short diameter part shorter than the interval, and at least both ends of the long diameter part are rounded. The configuration of the loading bar 12 is similar to this.

As shown in FIG. 4, the loading device 8 is provided with a DC motor 15 having a worm 16 attached to the tip thereof. A worm wheel 17 having a spur gear 18 mounted on the same shaft is engaged with the worm 16. Loading bar 11,12
As an example, spur gears 13 and 14 each having a diameter 1.5 times as large as that of the spur gear 18 are attached to the tip of the spur gear 18, and the spur gears 13 and 14 mesh with the spur gear 18. As a result, the loading bars 11 and 12 rotate at a two-thirds angular velocity of the worm wheel 17 based on the drive of the DC motor 15.
The rotation speeds of the loading bars 11 and 12 are determined in this way in order to control the speed of loading and unloading operations.

As shown in FIG. 5, the loading bar 11 has gimbals 4a and 5a when it is in a rotation position with its long diameter portion oriented in the vertical direction.
Abutting and pressing to bend the heads 4b and 5b to the disk 24
To unload from. Further, as shown in FIG. 6, when the loading bar 11 is rotated by 90 ° from the state of FIG. 5 and reaches the rotational position with the long diameter portion oriented in the lateral direction, the loading bar 11 comes out of contact with the gimbals 4a and 5a, and the head 4b. And 5b are loaded onto disk 24. Heads 6b and 7b with loading bar 12
The loading and unloading operations of are also the same.

An L-shaped stopper 20 is fixedly attached to the rear portion of the loading device 8. As shown in FIG. 3, the lower end portion of the stopper 20 is in contact with the back surface (the surface on the right side of the drawing) of the plate 19.

A clamp 21 having a protruding portion 21a is rotatably supported by the bearing bracket 9 on the loading device 8. As shown in FIG. 3, the protrusion 21a is attached to the clamp 2
When 1 is in a predetermined rotation position, it abuts on the front surface (the surface on the left side of the drawing) of the plate 19. As shown in FIG. 4, the loading device 8 is provided with another worm wheel 22 having the same diameter as the worm wheel 17 engaged with the worm 16, and the clamp 21 is mounted on the same axis as the worm wheel 22. Has been. As a result, the clamp 21 is driven by the DC motor 15 to rotate with the loading bars 11 and 12 at the same angular velocity as the worm wheels 17 and 22 (that is, at an angular velocity 1.5 times the loading bars 11 and 12).

The relationship between the rotation positions of the clamp 21 and the loading bars 11 and 12 is shown in FIG. As shown in the figure,
When the loading bars 11 and 12 are in the rotational position with the long diameter portion oriented in the vertical direction, the rotational position relationship between them is set so that the clamp 21 is in the rotational position in which the protrusion 21a just abuts against the front surface of the plate 19. Has been done. This allows the head
When the 4a to 7a are unloaded, the protrusion 21a comes into contact with the plate 19.

Next, the drive relationship between the clamp 21 and the stopper 20 is shown in FIG. Loading bar as shown
When 11 and 12 are rotated 90 degrees from the state shown in FIG. 7 and are in the rotational position where the long diameter portion is oriented in the lateral direction, the corners of the clamp 21 just contact the lower surface of the stopper 20, so that the clamp 21 and the stopper 20 are in contact with each other. The layout relationship is set. In other words, as described above, the rotation speed of the clamp 21 depends on the loading bar 11,1.
Since it is 1.5 times 2, the clamp 21 comes into contact with the stopper 20 at the rotational position rotated by 135 ° from the state shown in FIG. 7. The arrangement relationship between the stopper 20 and the clamp 21 is set in this way to prevent overrun of the DC motor 15 after cutting the drive current, and to load the loading bars 11, 12 with the long diameter portion just oriented in the lateral direction. This is for surely stopping the rotation of.

In the carriage mechanism having the above-described structure, the positioning device 30 according to the present invention is attached to the column 29 on the left side of the drawing of the loading device moving rail 25 at the depth of the drawing, as shown in FIG. . As shown in FIG.
The positioning device 30 includes two guide rails 32, both ends of which are supported by the support column 29 and the support portion 31. The guide rail 32 is substantially parallel to the rail 25 and movably supports a stopper block (stopper member) 33. On the upper part of the block 33, a contact part 33a is provided at the same height as the screw 28a attached to the lower part of the base block 28 of the loading device 8.

A screw 34 is attached to the column 29 in a semi-fixed state with its tip facing the block 33. Further, a screw 35 is also attached to the support portion 31 in a semi-fixed state with its tip facing the block 33 side. Position the screws 34 as shown.
When the tip of the screw 34a of the base block 28 of the loading device 8 comes into contact with the abutment portion 33a of the block 33 in a state where the tip of the block 34 and the block 33 are in contact with each other, the loading device 8 is just a 35-inch type. The carriage 1 is positioned so that it is located at the loading and unloading positions for the disks 23 and 24 (hence the plate 19 is also brought into contact with the stopper 20 of the loading device 8 to keep the relative positional relationship with the loading device 8 constant). It is set so that it is located at the contact start / stop position for the disks 23 and 24 of just 3.5 inches type. On the other hand,
As shown in FIG. 9, the position of the screw 35 is such that when the tip of the screw 35a is in contact with the block 33 and the tip of the screw 28a is in contact with the contact portion 33a, the loading device 8 is just 5 inches. So that it is in the loading and unloading position for the disks 23, 24 of the mold (thus also with the plate 19 abutting the stopper 20).
The carriage 1 whose relative positional relationship with the above is kept constant as described above is set so as to be positioned at the contact start / stop position with respect to the 5-inch type disks 23 and 24.

A block moving screw 36 is rotatably attached to the column 29 with its tip facing the block 33. A compression spring 37 is provided between the block 33 and the column 31 so as to surround the guide rail 32 on the upper side of the drawing. The block 33 moves to the right in the figure while compressing the spring 37 by tightening the screw 36 and abutting and pressing the tip of the screw 36, and as shown in FIG. It comes into contact. In addition, the block 33 moves to the left in the drawing when the screw 36 is loosened and pressed by the restoring force of the spring 37, and comes into contact with the tip of the screw 34.

An example of the positioning operation of the loading device 8 and the carriage 1 in the carriage mechanism including such a positioning device 30 is as follows.

3.5 inch type disk 2 in magnetic disk inspection equipment
When the inspection of 3, 24 is performed, the block moving screw 36 is loosened and the block 33 is brought into contact with the screw 34 as shown in FIG. Then, the air cylinder 26 is driven to push out the piston rod 26a, and the loading device 8 is moved leftward in FIG. Then, the lower end portion of the stopper 20 presses the back surface of the plate 19, so that the carriage 1 is connected to the loading device 8 and moves in the same direction.
When the screw 28a of the base block 28 abuts on the abutment portion 33a of the block 33, the loading device 8 stops, and thus the carriage 1 also stops. At this time, as described above, the loading device 8 and the carriage 1 are positioned at the loading and unloading positions and the contact start / stop positions of the 3.5-inch type disks 23 and 24, respectively.

When the carriage 1 is moved ahead of the contact start / stop position to inspect the disks 23 and 24 by the heads 4b to 7b, the DC motor 15 is driven and the heads 4b to 7b are driven by the loading bars 11 and 12. After loading, the voice coil motor 3 is driven to move the carriage 1 to the left in FIG. As the heads 4b to 7b are loaded, the clamp 21 rotates at a predetermined speed based on the relationship between the loading bars 11 and 12 and the clamp 21 as described above, and the protrusion 21
Carriage 1 because a gently separates from plate 19
Are separated from the loading device 8 and move independently.

When the inspection is completed, the voice coil motor 3 is then driven to return the carriage 1 to the contact start / stop position described above, and the VC motor 15 is driven to load the loading bar 1.
After unloading the heads 4b to 7b by 1,12, the air cylinder 26 is driven to pull back the piston rod 26a, and the loading device 8 is moved to the right in FIG. Then, as the heads 4b to 7b are unloaded, the clamp 21 rotates at a predetermined speed and the protrusion 21a gently contacts the front surface of the plate 19, so that the protrusion 21a presses the front surface of the plate 19 and the carriage 1 is connected to the loading device 8 and moves in the same direction.

In the above-described operation example, the inspection apparatus has been shown to inspect the 3.5-inch type disks 23 and 24. However, when inspecting the 5-inch type disks 23 and 24, the block moving screw 36 is tightened. Block as shown in Fig. 9
After the 33 is brought into contact with the screw 35, the loading device 8 is moved in the same manner as described above, so that the loading device
8. The carriage 1 can be positioned at the load and unload positions and the contact start / stop positions for the 5-inch type disks 23 and 24, respectively.

As described above, according to this positioning device, when inspecting either 3.5-inch or 5-inch magnetic disks, the loading and unloading positions of the magnetic disks, the loading device 8, The carriages 1 can be easily positioned respectively.

In addition, in this embodiment, the screw 36 is rotatably attached to the support column 29, and the position of the block 33 is changed based on the rotation of the screw 36. However, instead of the screw, the tip is placed on the side of the block 33. Alternatively, the micrometer head may be rotatably attached to the column 29, and the position of the block 33 may be similarly changed based on the rotation of the micrometer head. Then the block 33 will be
Since it is possible to accurately measure the position of the block 33 using the scale of the micrometer head even when the block 33 is not in contact with any of the 35, by locating the block 33 at any position, the above-mentioned 3.5 The loading device and the carriage can be easily positioned at the loading and unloading positions and the contact start / stop positions even for magnetic disks of arbitrary size between the inch type disk and the 5 inch type disk. Become.

Further, in this embodiment, the positioning device according to the present invention is adopted in the carriage mechanism in the magnetic disk inspection device capable of inspecting both 3.5-inch type disks and 5-inch type disks. This positioning device may be adopted in a carriage mechanism in another magnetic disk inspection device capable of inspecting any of a plurality of types of magnetic disks that it has. Further, the positioning device may be adopted in a carriage mechanism in a disc type recording medium inspection device other than a magnetic disc or a carriage mechanism in a drive device other than the inspection device.

〔The invention's effect〕

As described above, according to the positioning device for the loading device of the present invention, the loading device and the carriage can be easily positioned at different loading and unloading positions and contact start / stop positions. Therefore, if this positioning device is adopted in the carriage mechanism of the disc type recording medium inspection device capable of inspecting any of a plurality of types of disc type recording mediums having different diameters, the disc type recording medium having any diameter can be inspected. Also in this case, the loading device and the carriage can be easily positioned at the loading and unloading positions and the contact start / stop positions of the disc type recording medium.

[Brief description of drawings]

1 is a partial sectional side view showing an embodiment of a positioning device of a loading device according to the present invention, FIG. 2 is a perspective view showing an example of a carriage function adopting the positioning device of FIG. 1, and FIG. FIG. 4 is a perspective view showing a partial detail of FIG. 2;
The figure shows the relationship between the DC motor and the loading bar in Figure 2.
FIG. 5 is a perspective view showing the relationship between the DC motor and the clamp, FIG. 5 is a side view showing a state in which the read / write head is unloaded by the loading bar in FIG. 2, and FIG. 6 is a read / write state by the loading bar in FIG. FIG. 7 is a side view showing a state in which the head is loaded, FIG. 7 is a side view showing a rotational position relationship between the loading bar and the clamp shown in FIG. 2, and FIG. 8 is an arrangement relationship between the stopper and the clamp shown in FIG. Side view, FIG. 9 is a partial cross-sectional side view showing a state in which the block moving screw is tightened and the block is in contact with the tip of the screw attached to the supporting portion in the positioning device of FIG. is there. 1 ... Carriage, 2 ... Carriage rail, 3 ... Voice coil motor, 4a-7a ... Gimbal, 4b-7b ... Read / write head, 8 ... Loading device, 9,10 ... Bearing bracket, 11, 12 …… Loading bar, 13,
14,18 ... Spur gears, 15 ... DC motors, 16 ... Worms, 1
7,22 ... Warm wheel, 19 ... Plate, 20 ... Stopper, 21 ... Clamp, 21a ... Projection, 23,24 ... Magnetic disk, 25 ... Loading device moving rail, 26 ...
Air cylinder, 26a …… Piston rod, 27,28 …… Base block, 28a, 34,35 …… Screw, 29 …… Post, 30 ……
Positioning device, 31 …… Supporting part, 32 …… Guide rail, 33
...... Stopper block, 33a …… Abutting part, 36 …… Block moving screw, 37 …… Compression spring.

Claims (3)

[Claims] 1. A read / write head (4b-7b) supported by a flexible support member (4a-7a) is mounted, and the head is moved to access a recording disk (23, 24). And a carriage (1) which is arranged along a moving path of the carriage.
A loading member (11, 12) that is displaced between the second position and the second position, the loading member pushing the support member to unload the head from the disk surface at the first position, At the second position, the pressing of the loading member against the support member is released to load the head onto the disk surface, and the loading and unloading operations are performed at predetermined loading and unloading positions. A disk-type recording medium drive device comprising at least a device (8) and a drive mechanism (25, 26) for moving the loading device to the predetermined loading and unloading positions, the drive mechanism (25, 26) ) For positioning the loading device (8) in the predetermined loading and unloading positions by Thus, the stopper member (33) displaceable within a predetermined range along the moving direction of the loading device (8) and the stopper member (33) correspond to each of a plurality of recording disks of different sizes. Stopper positioning means (34, 35, 34) for selectively positioning at any one of a plurality of fixed positions
36, 37), the stopper member (33) is positioned at any one of the fixed positions according to the size of the target recording disk, and the stopper member (33) positioned at the fixed position. By bringing the loading device (8) into contact with the loading device (8), the loading device (8) is placed at any one of a plurality of loading and unloading positions corresponding to the respective fixed positions.
A positioning device for a loading device in a disk-type recording medium driving device, which is capable of selectively positioning. 2. The positioning device according to claim 1, wherein each of the fixed positions that can be positioned by the stopper positioning means is adjustable. 3. The stopper positioning means comprises a first member (34) for adjusting one end of a movable range of the stopper member (33) and an other end of the movable range for adjusting the stopper member (33). Second member (35) and the stopper member (3
3) including members (36, 37) for moving back and forth,
The positioning device according to claim 1 or 2, wherein each end of the movable range is set as the fixed position, respectively.