JPH02132674A - Restricting member height adjusting tool for disk driving device - Google Patents

Abstract

PURPOSE:To accurately and easily adjust a restricting member height, to make workability efficient, and to mass-produce the adjusting tools by loading a fitting part on a driving means, and placing the restricting member at a position immediately before the contact to a gauge reference surface part. CONSTITUTION:The adjusting tool 51 obtained by integrating a fitting plate part 52 and a gauge reference surface part 53 is loaded on a turn table 8, a stabilizer 35 is turned by a coil spring, a pad 35a is dropped, and the underside of the pad 35a is abutted on a top face 53a of the gauge reference surface part 53. Next, a height adjusting screw 43 on the stabilizer 35 is screwed from an upper direction, immediately before a gap formed between the underside of the pad 35a and the top face 53a of the gauge reference surface part 53 is eliminated, the height adjusting screw 43 is shifted and regulated so that a visible minimum gap may exist. Thus, the height can be accurately and easily adjusted, the workability made efficient, and mass-production is attained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a height adjuster for a regulating member of a disk drive device that records and reproduces information on a disk-shaped magnetic recording medium.

[Conventional technology]

Disk drives are widely used as external storage devices for information processing devices such as computers and word processors. One of these information processing devices is a still video floppy disk drive device (hereinafter referred to as an SVF device) for recording/reproducing still image signals. This S
The VF device is installed in a still video floppy camera, and is designed to record image information on a still video floppy disk using the same operation as a camera device using optical film. As an example of this type of SVF device,
There is one disclosed in Publication No. 67. In this SVF device, a holder that holds a disk cartridge containing a magnetic recording medium (hereinafter referred to as a disk) is pivotably supported at one end on a mounting board equipped with a rotary table, and After inserting the cartridge into the holder, the holder is rotated toward the mounting board to load the disk in the disk cartridge onto the rotary table. During this loading, a regulation plate that regulates the height position of the disk relative to the magnetic head is locked to the bottom surface of the case cover by four locking pins, and a spacing adjustment screw is screwed into this regulation plate. . These spacing adjustment screws come into contact with the fixed shaft, which is the center of rotation of the rotary table, and the head of a height regulating pin, which is erected on a guide plate fixed to the mounting board, respectively, so that the spacing is adjusted. By rotating an adjustment screw, the height position of the regulating plate relative to the magnetic head can be adjusted. The space adjustment screw can be easily rotated by inserting a driver or the like through a driver insertion hole provided in the case force bar.

The disk serving as a magnetic recording medium that is rotationally driven by this disk drive device is housed in a hard case to form a disk cartridge, and the hub of the disk is exposed from an opening in the center. There is.

A shutter made of a thin metal plate is slidably attached to this case to close and open the head insertion opening.

[Problem to be solved by the invention]

By the way, in the above-mentioned conventional technology, the height of the regulating plate is adjusted by rotating the spacing adjustment screw while reading/writing with the disk attached, and setting it at a position where reading/writing is considered to be completed. However, discs made by different manufacturers have variations in warpage, waviness, etc.
The accuracy was poor, making it impossible to obtain stable head output, and the workability was also poor. The present invention has been made in view of the above-mentioned problems of the prior art and to solve the problems.The purpose of the present invention is to enable accurate and easy adjustment without using an actual disk, and to improve work efficiency and mass production. It is an object of the present invention to provide a height adjusting tool for a regulating member of a disk drive device that can be used to adjust the height of a regulating member of a disk drive device.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a disk-shaped information recording medium, a driving means for mounting and rotationally driving the information recording medium, a head device disposed on one side of the information recording medium, and a drive means for rotationally driving the information recording medium. a regulating member disposed on the other side of an information recording medium to regulate the height position of the information recording medium, the disc drive device for recording or reproducing information, or for recording and reproducing information; The mounting portion is provided with a mounting portion to be mounted on the information recording medium mounting portion of the driving means, and a gauge reference surface portion provided on the outer peripheral surface of the mounting portion in correspondence with the position of the information recording medium to be mounted, and the mounting portion is mounted on the information recording medium mounting portion of the driving means. The height of the regulating member is adjusted and set at a point immediately before the regulating member comes into contact with the gauge reference surface portion.

[Effect]

With the above means, the standard for determining the height of the regulating member becomes constant, and the height position of the disk relative to the head can be defined with high precision. Further, by placing the regulating member at a position immediately before contact, the distance of the regulating member to the gauge reference surface portion can be easily and accurately defined. Therefore, it is possible to improve work efficiency and mass production.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIGS. 1(a) and (b) are a plan view and partially cutaway front view of a height adjuster for a regulating member of a disk drive device according to the present invention, and FIGS. 2(a) and (b) are a mounting plate. FIGS. 3(a) and 3(b) are a plan view and a longitudinal sectional view of the gauge reference surface portion, and FIGS. 4 to 7 are a plan view and a longitudinal sectional view of the gauge reference surface portion, and FIGS. The plan view, front view, rear view, and left side view of the SVF device adjusted by applying the height adjuster; FIGS. 8 and 9 are the plan view, right side view, and FIG. The figure is a plan view showing the internal structure of the SVF device with the holder removed, Figure 11 is an explanatory diagram showing the relationship between the stabilizing plate, disk, and holder, and Figure 12 is the S
FIG. 13 is a plan view schematically showing the configuration of the VF device with the regulating member height adjuster attached, and is a sectional view of the main parts.

First, the SVF device will be explained. 4 to 10, the SVF device includes a frame 1, a slide plate 2 that can slide vertically in FIG. 4 on the upper surface of the frame 1, a holder 4 holding a disk cartridge 3, and a magnetic head. 5, a carriage transport mechanism 7 for transporting the carriage 6 in the radial direction of the disc, and a turntable 8 on which the disc is placed.
It mainly consists of a motor 9 that rotates a turntable 8. The frame body 1 is formed by folding a metal plate into a substantially U-shaped cross section, and the side plate 10 has one place as shown in FIG.
1 has two guide grooves 1 as shown in Fig. 7.
2, 13 and 14 are kerfed. These guide grooves 1
2, 13, and 14 are approximately L-shaped, and each has a horizontal portion parallel to the bottom plate 1a of the frame 1 and a vertical portion perpendicular to the bottom plate 1a. In addition, the side plate 11 is provided with a slide plate 2 on the disk cartridge insertion side A as shown in FIG.
A long bow-shaped guide groove 16 is formed from which an operating lever 15 for operating the slide is projected. A front plate 17 is attached to the opening of the frame 1 on the disk cartridge insertion side A.

As shown in FIG. 5, the front plate 17 has a disk cartridge insertion port l8 formed at the upper side, and a door 19 that closes the disk cartridge insertion port 18 when the disk cartridge 3 is not inserted is located at the top of the insertion port 18. A shutter is rotatably supported on the back surface in a state where it is always biased in the closing direction, and a shutter that slides along the front plate 17 is disposed on the lower back surface.

The shutter is supported at one end of a pair of levers and is always urged in the opening direction by a spring, and closes the disk cartridge insertion slot 18 instead of the door 19 when loading a disk cartridge. .

Further, the bottom plate 1a of the frame 1 has a height that abuts the lower end of a height adjustment screw 43 screwed into the base end of a pad 35a portion of a stabilizing plate 35, which will be described later, to set the height of the pad 35a. 1 ton of setting bins are installed upright. The slide plate 2 is located on the bottom plate 1a side of the frame body 1 and is constantly biased by a spring (not shown) in the disk cartridge insertion direction (arrow B direction), that is, in the opposite disk cartridge insertion side Q. The side plate 10.1 of the frame 1 is
Cam grooves (not shown) are formed corresponding to the guide grooves 12, 13, and 14 of No. 1. These cam grooves have an inclined part that slopes downward toward the disk cartridge insertion side A, a vertical part on the upper side (on the side opposite to the bottom plate 1a), and a horizontal part on the lower side (on the side opposite to the bottom plate 1a).

The projections 22, 23 . protruding from the side surface of the holder 4 .
24 connects the guide grooves 12 and 13 through these cam grooves.
．． 14 respectively. This slide plate 2 is
Although not particularly shown in the drawings, the disk cartridge 3 can be inserted and ejected from the upper surface by a retaining member such as a ring or a speed washer loosely inserted into a bin provided upright on the upper surface of the bottom plate 1a of the frame 1. It is attached so that it can slide freely in parallel directions. As shown in FIGS. 4 and 6, the holder 4 has holding portions 25 for the disk cartridge 3 having a substantially U-shaped cross section on both sides when viewed from the disk cartridge insertion side A, and both holding portions 26 on the side opposite to the bottom plate. It is equipped with a top plate 27 for connection.
On the side surface 28 of the holder 4 on the side plate 10, there is a spring piece 29 that supports the protrusion 22, as shown in FIGS. 7 and 10.
is hung down, and the protrusion 23 is provided on the side surface 30 on the side plate 11 side.
, 24 are attached, and a retaining lever 31 whose tip engages with an engaging groove formed on the side surface of the case of the disk cartridge 3 is provided. The top plate 27 of the holder 4 has an insertion opening 33 into which the pulse generator 1/sensor 32 is inserted, and a pad insertion opening 36 into which the butt 35a of the stabilizing plate 35 serving as a means for regulating the height position of the disk 34 is inserted. A support plate 37 for supporting the pulse energy rate sensor 32 is attached near the insertion opening 33, and a shutter closing spring 3B made of a wire spring is attached to the second side. The stabilizing plate 35 is pivotably supported via a screw 39 between the stabilizing plate attachment parts lm and In provided on the back plate 18 portion of the pad insertion opening 36 of the frame body 1 on the side Q opposite to the disk cartridge insertion side. A coil spring 4 is wound around the outer periphery of the screw 39.
0, the bottom plate 1a direction of the frame body 1 and the disk 3 are always
4 in the radial direction. In addition, an eject lever 41 is provided on the opposite disk cartridge insertion side Q of the frame 1.
and a lock lever 42 are each swingably attached via a support shaft 4lb. This lock lever 42 is biased clockwise by a coil spring 63 wound around the support shaft 4lb. When the disc cartridge 3 is unloaded, the stabilizing plate 35 is pushed up by the push-up portion 4p on the top surface of the holder 4. , the pad 35a is pushed up to a height that does not extend beyond the top end of the side plate 10.11 of the frame 1.
When the disk cartridge 3 is inserted or removed, it is retracted from the disk cartridge 3, and during loading, it comes into contact with the upstream side of the magnetic head 5 in the disk rotation direction to regulate the height position of the disk 34 with respect to the magnetic head 5. It looks like this. This height position is achieved by screwing the height adjustment screw 43 screwed into the base of the pad 35a of the stabilizer plate 35, and the lower end of this height adjustment screw 43 is connected to the top surface of the height setting pin 1t. It comes into contact when loading. As shown in FIG. 10, the carriage 6 is transferred in the radial direction of the disk 34 along a guide shaft 47 by a carriage transfer mechanism 7 consisting of a stepping motor 44, a screw shaft 46 on which an intermittent drive screw 45 is formed, and the like. and a magnetic head 5 provided on the right end side of the carriage 6.
Recording/reproduction is performed by positioning the disc at a desired recording track position.

This magnetic head 5 is a combination of two magnetic heads for producing a frame image, and as shown in FIG.
The support body 5C is supported and fixed approximately at the center of a disc-shaped support body 5C, and the support body 5C is attached to the carriage 6 approximately parallel to the disk 34.
It is attached to. This support body 5C has a peripheral portion 5d
is formed slightly higher than the central portion, and a concave portion 5f is formed inside the peripheral portion 5d. In this example, the support plate 5
The outer diameter of C is set to 7 mm, the inner diameter of the recessed portion 5f is set to 6 mm, and the depth of the recessed portion 5f is set to 100 μm.

Further, a motor 48 is provided on the frame 1 on the side Q opposite to the disk cartridge insertion side in FIG.

Furthermore, a reduction gear group 49 is provided on the drive shaft side of the motor 48.
is provided, and the output end of the final stage gear of the reduction gear group 49 can be locked to a part of the insertion side Q of the slide plate 2, so that the output end is attached to a part of the slide plate 2 at the time of ejection. By locking, the slide plate 2 can be slid toward the disk cartridge insertion side A, that is, toward the front plate 17.

Next, the operation of the SVF device configured as described above will be explained.

FIG. 4 is a plan view of the SVF device showing the state before loading the disk cartridge 3. In this state, the slide plate 2 is at the position closest to the front plate 17 against the elastic force of the spring. As shown in FIG. 7, the protrusion 42b of the lock lever 42 is engaged with the engagement groove 50 of the temporary slide 2, and movement in the disk cartridge insertion direction is prevented.

When the slide plate 2 is in the unloading position, the projections 22, 23, .
24 is located in the horizontal part of the guide grooves 12, 13.14 formed in the side plate 10.11 of the frame body 1, as shown in FIG. It is pushed by the surface of the front plate l7 and is closest to the disk cartridge insertion opening 18 of the front plate l7, and is at the same level as the disk cartridge insertion opening l8. This position is a standby position for the disk cartridge 3, and
This is the ejection position of the disk cartridge 3.

At this time, the stabilizing plate 35 is pushed up by the holder 4 to the standby position for the disk cartridge 3, allowing smooth insertion of the disk cartridge 3.

When the disk cartridge 3 is inserted into the disk cartridge insertion slot 18 of the front handle 17 from the above-mentioned unloaded state, the disk cartridge 3 advances into the holder 4 while pushing open the door 19, and the ejection lever 41 shown in FIGS. Press to release the lock of the lock lever 42 from the slide plate 2. In this process, the engaging portion of the engaging lever 31 shown in FIG.
The engagement lever 31 engages with the engagement groove of the case, and when the disk cartridge 3 enters, the back side of the engagement lever 31 engages with the side plate l1 of the frame body 1.
The retaining lever 31 and the case of the disc cartridge 3 cannot be separated from each other, and the holder 4 and the disc cartridge 3 come to operate as one. At this point, since the lock lever 42 is unlocked as described above, the slide plate 2 moves toward the opposite disk cartridge insertion side Q due to the elastic force of the spring, and fits into the cam groove and the guide groove 12, 13, 14. The pushed-through protrusions 22, 23.
24 is the cam groove and guide groove! 2.13.14 is moved vertically below the guide groove 12.13.14 as shown in FIG. As a result, the holder 4 reaches the loading position, the disc 34 is loaded onto the turntable 8, and recording/reproduction can be performed. At this time, as shown in FIG.
is rotated counterclockwise in the figure by the elastic force of the coil spring 40, the pad 35a is lowered, and the pad 35a enters into the holder 4 and the disk cartridge 3 to define the position of the disk 34 relative to the magnetic head 5. do. At this time, the lower end of the height adjustment screw 42 at the base of the pad 40a comes into contact with the tip of the height setting bin 1t, and is positioned at a height of about 50 μm from the end surface of the peripheral edge 5d of the support 5. It is set. Further, in this embodiment, this height is 35 μm from the reference surface H of the disk 34, and its allowable range is ±5 μm. It goes without saying that this height varies depending on the thickness of the disk 34, the degree of flexibility, the diameter of the support plate 5C, etc. Next, a height adjuster for a regulating member of a disk drive device according to the present invention will be explained.

In FIGS. 1 to 3, reference numeral 51 denotes an adjustment tool, and this adjustment tool 5l is composed of a mounting plate portion 52 and a gauge reference surface portion 53. This mounting plate portion 52 is shown in FIG. 2(a).
As shown in (b), it is formed into a disk shape, and a positioning hole 54 into which the positioning projection of the turntable 8 fits is bored in the center, and an annular projection 55 projects from the lower surface of the positioning hole 54. Further, screw insertion holes 57 for inserting screws 56 are bored at three locations. Moreover, the gauge reference surface portion 53 is shown in FIG. 3(a). As shown in (b), it is formed into a rectangular plate shape with chamfered four corners, and a fitting hole 58 into which the annular protrusion 55 fits is bored on the left side, and the fitting hole 58 is surrounded by the A female screw hole 59 is provided into which the screw 56 inserted into the screw insertion hole 57 is screwed. Further, a small circular hole 60 is provided on the right side of the gauge reference surface portion 53 and an oval recess portion 61 is provided on the lower surface side, thereby forming a relief portion for the magnetic head 5. 62 is a small hole through which the height setting pin 1t is exposed.

Next, an adjustment method using the regulating member height adjuster of the above embodiment will be explained.

The adjustment tool 51, in which the mounting plate part 52 and the gauge reference surface part 53 are integrated with the screw 56, is mounted on the turntable 8 of the disk drive device as shown in FIGS. 4(a) and 4(b).
The upper surface 53a of this gauge reference surface portion 53 is set at a height of 35 μm with respect to the disk reference surface (upper surface) H.

Then, as described above, the stabilizer plate 35 is rotated by the elastic force of the coil spring 40 to lower the pad 35a, and the pad 35a is lowered.
The lower surface of a is brought into contact with the upper surface 53a of the gate reference surface section 53. Next, the height adjustment screw 4 screwed into the stabilizer plate 35
3 from above using a tool such as a screwdriver to bring the lower end of the height adjustment screw 43 into contact with the upper surface of the height setting pin 1t. Then, when the height UM adjustment screw 43 is further screwed, the stabilizer plate 35 is rotated upward against the elastic force of the coil spring 40, and the lower surface of the butt 35a and the gate reference surface portion 5 are rotated upward.
A gap will be formed between the upper surface 53a of No. 3 and the upper surface 53a of No. 3. Adjustment is made by moving the height adjustment screw 43 back and forth just before this gap disappears, that is, so that the minimum visible gap exists.

In this way, the heights of the stabilizer plate 35 and the butt 35a are adjusted, and according to this method, the height can be adjusted with an accuracy of about 2 μm by visually checking the gap.

Further, the standard for determining the height of the stabilizer plate 35 is constant, and the height position of the disk relative to the head can be defined with high precision. In addition, the pad 35a of the stabilizer plate 35 is attached to the gauge reference surface portion 5.
3, the distance between the stabilizer plate 35 and the gauge reference surface portion 53 can be easily and accurately defined. Therefore, it is possible to improve work efficiency and mass production. In the above embodiment, the height adjustment screw 43 is connected to the height setting pin 1.
Although the explanation has been made to adjust the height by moving the height adjustment screw 43 forward and backward from the state where it does not contact the setting pin 1t, it is of course possible to perform the adjustment from the state where the adjustment screw 43 is brought into contact with the setting pin 1t. Further, the adjustment tool 51 includes a mounting plate portion 52 and a gauge reference surface portion 53.
It is also possible to mold them together. [Effects of the Invention] As described above, according to the present invention, adjustment can be performed easily and accurately without using an actual disk, and efficiency of workability and mass production can be achieved.

[Brief explanation of the drawing]

1 to 13 illustrate one embodiment of the present invention, and FIG. 1(a). (b) is a plan view and partially cutaway front view of the height adjuster for a regulating member of a disk drive device according to the present invention, and FIGS. 2(a) and 2(b) are a plan view and a longitudinal section of the mounting plate portion. Figure 3(a). (b) is a plan view and a vertical sectional view of the gauge reference surface portion, and FIGS. 4 to 7 are still video floats adjusted using the height adjuster for the regulating member of the disk drive device according to the present invention. A plan view, a front view, a rear view, and a left side view of the SVF device (hereinafter referred to as the SVF device); FIGS. 8 and 9 are a plan view and a right side view of the SVF device in the loaded state; FIG. A plan view showing the internal structure of the device with the holder removed; Figure 11 is an explanatory diagram showing the relationship between the stabilizing plate, disk, and holder; Figure 12 is the SVF device equipped with a height adjuster for regulating members. FIG. 13 is a plan view showing a schematic configuration of the state, and a cross-sectional view of a main part thereof. 1t・・・・・・Height setting pin, 5・・・・・・
...Magnetic head, 8...Turntable, 9...Motor, 35...
... Stabilizer, 35a... Pad, 43.
・・・・・・Height adjustment, 51...
・Adjustment tool, 52...Mounting plate part, 53...
・・・・・・Gauge reference plane part, 54・・・・・・・・・
・Positioning hole. Figure l (aノ(bノ5l) Figure 2 (a) Figure 5 Figure 3 (a) Figure 6 Figure 7 Figure 8 Figure 9 Figure/1 Figure 10 A Figure Otsu Figure 12

Claims (1)

[Claims] a disk-shaped information recording medium, a driving means for mounting and rotating the information recording medium, a head device disposed on one side of the information recording medium, and a head device disposed on the other side of the information recording medium, A disk drive device for recording or reproducing information, or for recording and reproducing information, comprising a regulating member that regulates the height position of an information recording medium, and a mounting section that is attached to an information recording medium mounting section of the drive means. and,
A gauge reference surface portion is provided on the outer circumferential surface of the mounting portion in a manner corresponding to the position of the information recording medium to be mounted, and the mounting portion is mounted on the drive means, and the regulation surface portion is provided with respect to the gauge reference surface portion. A height adjuster for a regulating member of a disk drive device, characterized in that the height of the regulating member is adjusted and set at a position immediately before the members come into contact.