JPS6348649A - Device for loading magnetic recording medium - Google Patents

Abstract

PURPOSE:To improve the positional accuracy of a holder and a pad mount plate by interposing a spring means to part the both between the holder and the pad mount plate so as to bring the holder and the pad mount plate into press contact onto a positioning member stably. CONSTITUTION:The holder 46 is supported movably in the vertical direction to the pad mount frame 44. That is, the holder 46 is a flat rectangular pipe whose one end is used as a loading inlet 46a of a magnetic recording medium 10, and a roller support chip 46b directed upward is formed to the right/left sides while being placed differently in the forward/backward directions. A roller 47 supported by the roller support chip 46b is fitted to a vertical guide slot 48 formed to the pad mount frame 44 to connect/disconnect the holder 46 to/ from the pad mount frame 44. Then a compression spring 49 is interposed between the pad mount frame 44 and the holder 46 to always keep the both in a way that the roller 47 is at a maximum parting position where the roller 47 is in press contact with the bottom of the vertical guide slot 48.

Description

TECHNICAL FIELD The present invention relates to a magnetic recording medium loading device for a magnetic recording medium device.

"Prior Art and its Problems" In magnetic recording reconstitution equipment used in electronic still cameras, etc., a disc-shaped rotating recording medium (such as a magnetic sheet) is placed inside the jacket.
A magnetic recording medium containing a magnetic disk (magnetic disk) is used. When using this FII recording medium, it is necessary to insert the magnetic head into the magnetic head insertion hole formed in the jacket to bring the magnetic head and the magnetic disk into proper contact when recording and reproducing the medium, that is, when loading the medium. In addition, in recent years, with the demand for higher recording temperatures and longer media life, a pad entry hole has been drilled on the back side of the magnetic head entry hole in the jacket, and during loading, the pad inserted through this pad entry hole It is believed that this is a method to regulate the magnetic disk and obtain good head touch.

This pad is a positive wave with respect to the magnetic disk, but in conventional mounting, the height of the pad is affected by the cumulative error in the accuracy of each component, so it is placed in the correct position with respect to the magnetic disk. It was difficult to make contact with M'5ffi.

FIGS. 6 and 7 show a conventional loading device 7, which was proposed in Utility Model Application Publication No. 60-51650. The magnetic recording medium 10 includes a rectangular jacket 1],
This jacket 1 has a magnetic disk 12 housed inside it, and the magnetic disk 1 has a 6
A center hole 14 is formed to expose the center hub of the iKK disk 12, and a magnetic head entry hole 15 (see FIG. 8) and a pad entry hole 16 are formed on the front and back sides of the fixed part. ing.

The loading device attaches the hub 13 of the magnetic recording medium 10 to a spindle motor (drive motor), and inserts the magnetic head into the magnetic head entry hole 15.
The magnetic recording medium 1 is inserted between the right fixing plate 21 fixed to the heath 20.
It supports a holder 22 into which 0 is inserted and a pad mounting plate 23. This holder 22 and pad mounting plate 23 are
Each has a roller 24.25 on its side, which roller 24.25 has a vertical guide groove 26 formed in the fixed plate 21.
．． 27 respectively. Also, the pad mounting plate 23
has a pad 28 on the cap corresponding to the pad entry hole 16 of the magnetic recording medium 0 inserted correctly into the holder 22. This pad 28 is a hole made in the holder 22 (not shown).
The inside of the holder 22 can be entered from.

A cam plate 29 movable in the direction of the arrow in the figure is mounted on the fixed plate 21, and the rollers 24 and 25 are attached to this cam plate 29.
It also fits into the cam grooves 30 and 31 formed at the same time.

The cam groove 30.3] has upper and lower flat parts 30a and 30, respectively.
b, 31a, 31b, and the inclined part 30 that connects between them.
C, 31C bow your head. The cam plate 29 has a rack 29at at its lower end that engages with the drive gear 32.
When the drive gear 32 rotates forward and backward, it reciprocates in the direction of the arrow in the figure. Numerals 33 and 34 are long grooves and pins that regulate the moving direction and closing of the cam plate 29.

Therefore, in this conventional device, when the cam plate 29 is moved to the right in FIG. 6 by the drive gear 32, the cam groove 30
．． 3], the rollers 24 and 25 fit into the flat parts 30a and 31a, respectively, and the holder 22 and pad mounting plate 23 are located at the raised position (afro-doing position). In this state, when the magnetic recording medium 10 is inserted into the holder 22 and brought into contact with the stopper 22a, the cam plate 29 is moved to the left in the figure by the driving pin 32, and the roller 24. 2
5 extends from the flat parts 30a, 31a to the inclined part 30C231c, so the holder 22 and the pad mounting plate 23 descend vertically according to the vertical guide grooves 26, 27. Then, when the roller 24.25 force reaches the flat portions 30b and 31b, the descent stops, and in this state, the pad 28 fixed to the pad mounting plate 23 or the pad entry hole of the magnetic recording medium 10]
6 and presses the magnetic recording medium 10 toward the magnetic head 35 (see FIG. 8). Further, the hub 13 at the center of the magnetic disk '712 is attached to the spin mold ring 36.

This is the loading state. The transition from the loading state to the unloading state is performed by the reverse operation described above.

According to the conventional arrangement described above, the positioning of the holder 22 (magnetic recording medium 10) and the pad 28 in the height direction is performed by the flat portions 30b, 31b of the cam groove 30.31. However, the accuracy is the cumulative effect of the processing accuracy of the flat parts 30b, 31b, the degree of engagement between the flat parts 30b, 31b and the rollers 24.25, the movement accuracy of the cam plate 29 in the height direction, etc. Therefore, due to cumulative errors of each component, it is difficult to control the height of the magnetic recording medium and the height of the pad 28. In addition, in order to solve the above-mentioned problems, the pad 28 is pressed against the pad mounting body 28 and is biased by a spring so as to be spaced apart by M. A similar structure has also been proposed, but the number of parts is large and the structure is complicated.

``Object of the Invention'' The present invention solves the problems of conventional loading equipment, and aims to provide a loading equipment that has a simple structure and in which accumulated errors in component parts do not affect positioning accuracy. purpose.

"Summary of the Invention" The present invention provides a holder for inserting and removing a magnetic recording medium on a base fixed to a drive motor that rotationally drives the magnetic recording medium;
A band attachment plate having a pad that enters into a pad insertion hole is arranged so as to be able to approach and separate from each other, and biased by an elastic means so as to be spaced apart from each other by M, and this pad attachment plate is used for magnetic recording. A driving means for driving in a direction perpendicular to the plane direction of the medium is provided, and when the holder and pad mounting plate are lowered by this driving means, they come into contact with the holder and pad mounting plate individually, and the holder and pad are moved. It is characterized by providing positioning means for sequentially regulating the lowering position.

"Embodiments of the Invention" The present invention will be described below with reference to illustrated embodiments. 7 to 5 show an embodiment of the present invention, in which a spindle motor 41 for rotationally driving the magnetic disk 12 of the magnetic recording medium 10 is fixed on the base 40, and this spindle motor 4] A pair of fixed cam plates 42 are erected and fixed on both sides. The hub 13 of the magnetic disk 12 is supported in contact with the hub support surface 41a of the spindle motor 41 during loading.

A cam; jt43 is cut into this fixed cam 8242. This cam groove 43 has a horizontal portion 43a and a vertical portion 43b.
A roller 45 protruding from a pad mounting frame 44 is fitted into this cam groove 43. Therefore, the pad attachment frame 44 can move horizontally along the horizontal portion 43a of the cam groove 43, and vertically along the vertical portion 43b.

A holder 46 is supported by the pad mounting frame 44 so as to be movable in the vertical direction. That is, the holder 46 has a flat rectangular cylindrical shape with one end thereof as an insertion opening 46a for a magnetic recording medium.
&Differently, a roller support piece 46b facing upward is also formed. The roller 4 supported by this roller support piece 46b
7 fits into a vertical guide groove 48 formed in the pad mounting frame 44, allowing the holder 46 to move 8M relative to the pad mounting frame 44. And this pad mounting frame 44 and holder 4
A compression spring 49 is inserted between the vertical guide grooves 6 and 6, and the rollers 47 are normally held at the maximum M distance position where the rollers 47 abut the bottoms of the vertical guide grooves 48.

From the above configuration, the holder 46 moves in the horizontal direction according to the pad mounting frame 44, and on the other hand, when the pad mounting frame 44 is vertically lowered onto the base 40, even if the holder 46 is lowered or stopped by an external force, the pad mounting frame 44 is moved in the horizontal direction. The frame 44 is a compression spring 49
It is understood that it is possible to descend roughly while compressing the .

A pad 50 is fixed to the lower surface of the pad attachment frame 44 so that the pad 50 can enter the inside of the jacket 1 through a hole bored in the holder 46 and the pad entry hole 16. Note that "perpendicular" refers to a direction perpendicular to one plane of the magnetic recording medium 10.

On the base 40, there are positioning bins 5], 52, 53 for the jacket 11 of the magnetic recording medium 10, and pads 5.
The positioning bins 54 and 55 for 0 are fixed. The purchase bins 51 and 52 for jackets are respectively attached to the holder 4.
The positioning bin 53 comes into contact with the lower surface of the jacket 11 in the holder 4 (magnetic recording medium exposed from the holder 46 by turning δ), and the positioning bin 53 is placed near the insertion opening 46a and
By contacting the bottom surface of 6, the jacket] 1 digit is regulated. In addition, the pad positioning bin 54 is attached to the pad mounting frame 4.
4, the positioning pin 55 has its upper narrow diameter portion 55a fitted into the positioning hole of the pad 50,
The position of the pad 50 is regulated by the stepped surface 55b coming into contact with the lower surface of the pad 50.

Next, drive 81 drives the band mounting frame 44 according to the cam groove 43 of 42! ! I will explain the structure. A drive carrier 61 is supported on both left and right sides of the base 40 so as to be rotatable about a shaft 60'3. Gear 63 is engaged. A drive lever 6 is attached to the shaft 60 coaxially with a drive gear 61.
4 is swingably supported, and this driving bar 64 (
Both ends of a torsion coil spring 67 wound around the shaft 60 are hung between the raised spring hook 65 and the spring hook 66 erected on the drive carrier 61. This torsion coil spring 67 is driven to apply rotational force to the bar 64 in the counterclockwise direction in FIG. It is regulated at the position of contact. A long groove 69 is formed on the free end side of the drive bar 64, into which a roller 45 provided on the side of the pad mounting frame 44 is fitted.

This device having the above configuration operates as follows. Figure 1, Ka 4
In the non-loading state shown in the figure, the holder 4 is inserted through the insertion port 46a.
Insert the magnetic recording medium ] 0 into 6. After that, the magnetic recording medium 10 is inserted automatically or manually by the insertion completion operation.
When the drive switch of the drive gear 63 is turned on by operation and the drive boss 6j is rotated in the counterclockwise direction as shown in Fig. 1,
The stopper hole 68 formed in the drive chisel 61 moves (
171), the driving bar 64 is biased to rotate counterclockwise by the torsion coil spring 67.
Both rotate counterclockwise.

Therefore, the roller 45 engaged with the long groove 69 at the tip of the drive lever 64 or the wooden flat part 4 of the cam groove 43 of the fixed cam plate 42
3a, and the pad mounting frame 44 and holder 46 can be drawn inside the drive unit.

Next, the roller 45 reaches the vertical portion 43b of the cam groove 43, and the pad mounting frame 44 and holder 46 move vertically toward the head 40. In this descending stroke, first, the descending position of the holder 46 (magnetic recording medium 10) or the position of the jacket] 1 is determined by being regulated by the jacket positioning bins 51, 52, 53.

When the pad mounting frame 44 is lowered, the rose l-' 50 enters the pad entry hole 6 of the magnetic recording medium 0. The lower end of the pad mounting frame 44 is regulated by the pad positioning bins 54 and 55, and the pad 50 is
The pad mounting frame 44 stops descending at the position where it properly contacts the magnetic disk 12.

In this downward stroke of only the pad mounting frame 44, the roller 47
relatively rises within the vertical guide groove 48, and the compression spring 49
The holder 46 is compressed and pushes the holder 46 (magnetic recording medium) downward.
．． It remains stable between 52.53 and 52.53.

Further, even after the lowering of the pad mounting frame 44 is stopped by the pad positioning pins 54 and 55, the drive gear 6 remains rotated by a certain angle and is driven, applying a counterclockwise rotational force to the bar 64 by the torsion coil spring 67. Give. Therefore, the roller 45 and the pad mounting frame 44 receive the downward biasing force from the torsion coil spring 67 and are pressed against the pad matching pins 54 and 55, so that the position of the pad 50 is also stabilized.

FIG. 5 shows this loading state, in which the hub 13 of the magnetic disk 12 is in contact with the hub support surface 41a of the spindle motor 41, and the pad 50 is in contact with the upper surface of the magnetic disk 2 in the figure.

Although not shown, the magnetic head enters into the jacket 11 from the magnetic head entry hole 15 on the opposite side of the pad 50 and engages with the lower surface of the magnetic disk 12 in the drawing.

Unloading is performed by the reverse operation of the above operation.

In the above embodiment, the drive cap 61 and the drive lever 64 are used as means for driving the pad mounting frame 44, but the present invention does not limit the drive means for the pad mounting frame 44. Alternatively, the cam groove 43 of the fixed cam plate 42 may be used to perform horizontal and vertical movements, or the band attachment frame 44 may be provided with only vertical movement. In this case, for example, a vertical rack may be cut directly into the pad mounting frame 44, and the rack may be driven by driving means such as meshing with a drive gear.

"Nine Achievements of the Invention" As described above, the loading device of the magnetic recording medium of the present invention =
According to the above, a holder for inserting and removing a magnetic recording medium and a pad mounting plate having a pad that contacts the magnetic disk can be moved together by 19M, and by driving the pad mounting plate one turn in the vertical direction toward the head, The pad can also be moved vertically.

Since the lowering position of the holder and the lowering position of the pad mounting plate can be regulated individually by the positioning member that contacts them, it is possible to regulate the positions of the magnetic recording medium and the pad by the accuracy of the positioning member. can. Therefore, the accumulation of accuracy errors of the component parts does not reduce their accuracy. Furthermore, since a spring means is interposed between the holder and the pad mounting plate to separate them, the holder and the pad mounting plate can be stably brought into contact with the positioning member, and their positioning accuracy can be improved.

[Brief explanation of the drawing]

Fig. 1 is a side view of the magnetic recording medium loading device of the present invention in an unloading state, Fig. 2 is a side view of the same loading state, Fig. 3 is a plan view of the same, Figs. The figures are a front view showing an unloading state and a loading state, respectively. Figure 6 is a perspective view showing an example of a conventional loading device. Figure 7 is a view in the direction of the ■ arrow in Figure 6.
The figure is a sectional view taken along the line ■-■ of Figure 7. 10...Magnetic recording medium, 1]...Jacket, 12
...Magnetic disk, ]3...Hub, 14...Center hole, -15...Magnetic head entry hole, ]6...-Pad entry hole, 40...Heath, 41...Spindle Motor, 4ja...Hub support surface, 42...Fixed cam plate, 43...Cam groove, 43a...Horizontal part, 43b...
・Vertical part, 44... Pad mounting frame, 45... Roller, 46... Holder, 47... Roller, 48... Vertical guide groove, 49... Compression spring, 50... Bar・51.52.53...Positioning bottle for jacket (
positioning member), 54.55... Pad positioning bin (positioning member), 60...-shaft, 61... Drive gear, 62... Drive shaft, 63... Drive gear, 64...
・Drive lever, 65.66...Spring hook is pin, 67.
...Torsion coil spring, 68...stopper hole. Patent applicant: Asahi Optical Industry Co., Ltd. Agent: Kuni Miura, Tendo, Shigeto Matsui, Yoshimi Sasayama Figure 2

Claims (1)

[Claims] (1) In a device that loads a magnetic recording medium containing a magnetic disk stored in a jacket having a pad insertion hole into a drive motor that drives the magnetic disk, the magnetic recording medium is loaded onto a base to which the drive motor is fixed. A holder to be inserted and removed and a pad mounting plate having a pad that enters into a pad insertion hole are disposed so as to be able to come into contact with each other and be urged to separate from each other by elastic means, and this pad mounting plate A driving means is provided for driving the holder and the pad mounting plate in a direction perpendicular to the plane direction of the magnetic recording medium, and when the holder and the pad mounting plate are lowered by this driving means, the holder and the pad mounting plate are brought into contact with the holder and the pad mounting plate individually. A loading device for a magnetic recording medium, characterized in that it is provided with positioning means that sequentially regulates its descending position.