JPS6348648A - Device for loading magnetic recording medium - Google Patents

Abstract

PURPOSE:To improve the positional accuracy of a holder and a pad mount plate by suspending them while they are energized downward to a vertical moving plate so as to bring the holder and the pad mount plate into press contact onto a positioning member. CONSTITUTION:The pad mount plate is suspended to a vertical moving frame 44 by a suspending shaft 53. The upper end of the suspending shaft 53 is fixed to the inner face of a vertical moving frame 44 and its lower end flange 53a regulates the falling end of the pad mount plate 46. Further, a compression spring 54 interposed between the vertical moving frame 44 and the pad mount plate 46 is inserted to the suspending shaft 53 to always energize the pad mount plate 46 toward the falling end. Further, a pad 55 to be advanced to a pad advancing hole 16 of a magnetic recording medium 10 loaded correctly in a holder 45 is fixed to the lower face of the pad mount plate 46. Moreover, a clearance is provided between the suspending shaft 53 and the advancing hole of the pad mount plate 46 to allow a slight movement of the pad mount plate 46 in the horizontal direction.

Description

DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD The present invention relates to loading and printing of a magnetic recording medium for a magnetic recording and reproducing apparatus.

[Prior art and its problems] In magnetic recording and reproducing devices used in electronic still cameras, etc., a disk-shaped rotating recording medium (such as a magnetic sheet) is placed inside a jacket.
A magnetic recording medium containing a magnetic disk (magnetic disk) is used. In this magnetic recording medium, during recording and reproduction, that is, during loading, it is necessary to insert the magnetic head into a magnetic head insertion hole formed in the jacket of the medium to bring the magnetic head into proper contact with the magnetic disk. Recently, the record high 8
With the demand for thinner disks and longer media life, a pad entry hole is drilled on the back side of the magnetic head entry hole in the jacket, and during loading, the magnetic disk is regulated by a band inserted through this pad entry hole. , how to get a good head touch.

The position of this pad with respect to the magnetic disk must be M, or in conventional installations, it is affected by cumulative errors in the height of the pad or the stacking dimensions of each component, so it must be positioned correctly with respect to the magnetic disk. It was difficult for the Imankai staff to come into contact with each other.

FIG. 5 and FIG. 6 show a conventional loading device proposed in, for example, Torakai No. 60-51650. Magnetic recording: The medium 10 consists of a rectangular jacket 11 and a magnetic disk 12 housed within the jacket 11. The jacket 11 has a central hub 3 of the magnetic disk 12 exposed at its center. center hole 14
A magnetic head entrance hole 15 (see FIG. 7) and a pad entrance hole 16 are formed on the front and back sides of the magnetic head entrance hole 15 (see FIG. 7).

The loading device attaches the hub 13 of the magnetic recording medium 10 to a spindle motor (drive motor), inserts the magnetic head into the magnetic head entry hole 15, and inserts the magnetic head into the pad entry hole 16.
The magnetic recording medium 10 is inserted between the left and right fixing plates 2 fixed to the base 20.
The holder 22 into which the pad is inserted and the pad mounting plate 23 are supported. The holder 22 and the band mounting plate 231 each have rollers 24.25 on their sides, and the rollers 24.25 or the vertical guide grooves 2 formed in the fixing plate 21
6.27 respectively. Also, pad mounting plate 2
3 is the magnetic recording medium 10 correctly inserted into the holder 22.
A pad 28 is provided at a position corresponding to the pad entry hole 16. This pad 28 can enter into the holder 22 through a hole (not shown) drilled in the holder 22.

A cam plate 29 that is movable in the direction of the arrow in the figure runs along the fixed plate 21, and the rollers 24 and 25 move along this cam plate 29.
It also fits into cam grooves 3o and 31 formed at the same time.

The cam grooves 30 and 31 have upper and lower flat parts 30a and 30, respectively.
b, 3+a, 31b, and the inclined portion 30c that connects them.
, 31c. The cam plate 29 has a rack 29a at its lower end that engages with the driving pin 32, and when the driving pin 32 rotates forward or backward, it reciprocates in the direction of the arrow in the figure. 33 and 34 are long grooves and pins that regulate the moving direction and range of the cam plate 29.

Therefore, in this conventional device, when the cam plate 29 is moved to the right in Fig. 5 by the drive gear 32, the cam groove 30
．． The rollers 24 and 25 are fitted into the flat portions 30a and 31a of 31, respectively, and the holder 22 and pad mounting plate 23 are located at the raised position (afro-loading position). In this state, after inserting the magnetic recording medium]0 into the holder 22 and bringing it into contact with the strike member 22a, when the drive gear 32 moves the plate 29 to the left in the figure, the roller 24
．． 25 from the flat parts 30a, 31a to the inclined parts 30c, 31
c, the holder 22 and pad mounting plate 23 are
It descends vertically according to vertical guide grooves 26,27. Then, when the rollers 24, 25 or the flat parts 30b, 31b are reached,
The descent stops, and in this state, the pad 28 fixed to the pad mounting plate 23 enters the pad entry hole 16 of the magnetic recording medium 10 and presses the magnetic recording medium 10 toward the magnetic head 35 (see Figure 7). ). Further, the hub 13 at the center of the magnetic disk 12 is attached to a spindle motor 36.

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

Therefore, in the conventional device described above, the heightwise positioning of the holder 22 (magnetic recording medium 10) and pad 28 is performed by the flat portions 30b, 31b of the cam groove 30.31. However, the positional accuracy is the cumulative effect of the processing accuracy of the flat parts 30b, 31b, the fitting accuracy of the flat parts 30b, 31b and the rollers 24.25, the accuracy of the movement of the cam plate 29 in the height direction, etc. Therefore, it is difficult to precisely control the positions of the magnetic recording medium 10 and the pad 28 in the height direction due to accumulated errors in each component, and therefore, it is difficult to precisely control the positions of the magnetic recording medium 10 and the pad 28 in the height direction. The reality was that there was no such thing.

``Object of the Invention'' The present invention solves the problems of the conventional loading device, and provides a loading device that has a simple structure and does not affect the cumulative error or positional accuracy of the components. purpose.

"Summary of the Invention" The present invention provides a vertically movable frame that is driven in a direction orthogonal to the plane of the magnetic recording medium on a base on which a drive motor that rotationally drives a magnetic recording medium is fixed. , a holder into which a magnetic recording medium is inserted and removed, and a pad mounting plate having a pad that enters into a pad entry hole are each movably supported in the vertical direction, and the holder and the pad support plate are movable in the direction of the base. The invention is characterized in that it is provided with an elastic means for biasing the vertical movement frame, and a positioning means is provided on the base to individually abut the holder and the pad mounting plate when the vertically movable frame is lowered, thereby regulating the lowering position. There is.

"Embodiments of the Invention" The present invention will be described below with reference to illustrated embodiments. 1 to 4 show an embodiment of the present invention, in which a spindle motor 41 (FIG. 3) that rotationally drives a magnetic disk 12 of a magnetic recording medium 10 is fixed on a base 40. A pair of horizontally movable cam plates 42 are erected and supported on both sides of the spindle motor 41 so as to be movable in the direction of the plate thickness plane. The illustration of the guide mechanism for this cam plate 42 is omitted. The hub 3 of the magnetic disk 12 is supported in contact with the hub support surface 41a of the spindle motor 41 during loading. A rack 42a is formed at the upper end of the horizontally movable cam plate 42, and this rack 42a engages with the driving pin 43. Therefore, when the driving pin 43 is rotated in the forward and reverse directions, the horizontally moving cam plate 42 horizontally moves back and forth.

A vertically movable frame 44, a holder 45 and a pad mounting plate 46, which are separately suspended from the vertically movable frame 44, are positioned between the pair of horizontally movable cam plates 42. The holder 45 is
It has a flat rectangular cylindrical shape with one end serving as an insertion opening 45a for the magnetic recording medium 10, and can be moved back and forth to the left and right of this insertion opening 45a!
71! ! 75 stop roller 47 is provided. This back-and-forth movement prevention roller 47 is fitted into a vertical guide rail 48 fixed on the base 40, and restricts the moving direction of the holder 45 in the vertical direction. J-3 "perpendicular" refers to a direction perpendicular to the plane of the jacket 11 of the magnetic recording medium 10.

On the left and right sides of this holder 45, upwardly facing roller support pieces 45b are formed with a difference of M% from front to back, respectively, and a roller 49 is supported by these roller support pieces 45b.

This roller 49 is fitted into a vertical guide groove 50 formed in the vertical movement frame 44, and is inserted into the vertical movement frame 44 of the holder 45.
The direction of movement is restricted to the vertical direction. The moving direction of the holder 45 is determined by the forward and backward movement prevention roller 4 as described above.
7 and the guide rail 48, the vertical movement frame 44 is also movable only in the vertical direction. A compression spring 51 (FIG. 3) is inserted between the vertical movement frame 44 and the holder 45, and the holder 45 is normally at the lower end position where the roller 49 is located at the lower end of the vertical guide groove 50. Retained.

The pad mounting plate 46 is attached to the vertically movable frame 4 by the suspension shaft 53.
4 is suspended. The suspension shaft 53 has its upper end fixed to the inner surface of the vertical movement frame 44, and its lower end 2 langes 53a regulate the lowering end of the pad mounting plate 46. In addition, a compression spring 54 inserted between the vertical movement frame 44 and the pad mounting plate 46 is fitted to the suspension shaft 53, and the compression spring 54 is inserted into the suspension shaft 53 to normally move the pad mounting plate 46 to its lower end. The pad mounting plate 46 has a magnetic recording medium 10 correctly inserted into the holder 45 on its bottom surface.
A pad 55 that can enter into the band entry hole 16 is fixed. A clearance is provided between the suspension shaft 53 and the entry hole of the pad mounting plate 46 to allow the pad mounting plate 46 to move slightly in the horizontal direction.

On the other hand, vertically moving rollers 56 are provided on the left and right sides of the vertically moving frame 44 facing the horizontally moving cam plate 42 at different positions in the front and rear. They fit into the formed cam grooves 57, respectively. Come! 1I57 has a flat part 57a that holds the vertical movement frame 44, holder 45, and pad mounting plate 46 in the upper non-rotted position, an inclined part 57b that allows the transition from the non-loaded state to the rotted vs. state, and a rotary state. It consists of 7 parts including a flat part 57c for holding.

And on the base 40 are a positioning bottle 6L62.63 for the magnetic recording medium [O's jacket 1] and a pad 55.
Positioning bins 64 and 65 are fixed. The jacket positioning bins 61 and 62 are respectively attached to the holder 45.
The positioning pin 63 contacts the bottom surface of the magnetic recording medium 10 exposed from the holder 45 in the deep part of the holder 45, and the positioning pin 63 contacts the bottom surface of the holder 45 in the vicinity of the insertion opening 45a, Perform position regulation.

Further, the pad positioning pin 64 regulates the lowering position M of the pad mounting plate 4G, and the positioning pin 65 has a narrow diameter portion 65a at the top that fits into the positioning hole of the pad 55, and the positioning pin 65 has a stepped position. By bringing the surface 65b into contact with the lower surface of the pad 55, the position of the pad 55 is regulated.

The wooden = constructed above operates as follows. Figures 1 and 3
In the non-loading state shown in the figure, the holder 4 is inserted from the insertion port 45a.
5, the magnetic recording medium 108 is inserted into it. After this, the insertion of the magnetic recording medium]0 is completed automatically or manually.
When the drive switch of the drive gear 43 is turned on by the operation 71 and the horizontal movement cam plate 42 is horizontally moved to the right in FIG.
The cam groove 57 moves relatively from the flat part 57a to the flIV material part 57b, and as a result, the vertical movement frame 44 starts to descend. At this time, the vertical movement frame 44 moves toward the inclined portion 5 of the cam groove 57.
7E), but as mentioned above, the moving direction of the holder 45, which is engaged with the vertical moving frame 44 via the roller 49 and the vertical guide groove 50, is the same as that of the forward and backward movement prevention roller 47. Due to the relationship of the guide rails 48, they are divided vertically, so they do not move horizontally.

As the vertically moving frame 44 descends, the holder 45 and the pad mounting plate 46 suspended from the vertically moving frame 44 also descend at the same time. First, the holder 45 (magnetic recording medium 1
The descending position of 0) is 61.6 for the jacket positioning bin.
2.63, the place of jacket 11 is determined. After this, when the vertical movement frame 44 further descends, the roller 49 relatively moves up within the vertical guide groove 5o,
On the other hand, the pad mounting plate 46 continues to descend together with the vertical movement frame 44, and its band 55 enters the pad entry hole 16 of the magnetic recording medium]. The lowering end of the pad mounting plate 46 is controlled by the pad positioning pins 64 and 65, and the pad mounting plate 46 stops descending when the pad 55 properly contacts the magnetic disk 12. compression spring 51
and 54 are the above holder 45 and pad mounting plate 4.
In the lowered position of 6, each bends and exerts a downward biasing force, and functions to hold the holder 45 and the pad mounting plate 46 in the normal position.

FIG. 4 shows this loading state, in which the magnetic disk 12 is attached to the hub 13 (well, the hub support surface 41a of the spindle motor 41), and the pad 55 is attached to the magnetic disk 12.
It is in contact with the top surface of the figure.

Although the magnetic head is not shown, as the jacket 11 is lowered, the magnetic head entry hole 15 relatively enters the jacket 11 on the opposite side of the pad 55, and the lower surface of the magnetic disk 12 in FIG. engage.

After the above operations, the vertical movement roller 56 reaches the flat part 57c of the cam groove 57, and the vertical movement frame 44 stops descending.
Thereafter, the horizontally moving cam plate 42 also stops moving.

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

In the above embodiment, the horizontally moving cam plate 42 is used as a means for driving the vertically moving frame 44, or other driving means is used, such as cutting a vertical rack directly on the vertically moving frame 44 and engaging it with a driving hook. This moving frame 44 can be driven.

"Effects of the Invention" As described above (according to the magnetic recording medium loading device of the present invention), by driving the vertically moving frame, the holder into which the magnetic recording medium is inserted and removed comes into contact with the magnetic disk. The pad mounting plate with the pad can be lowered in the order of the holder and the pad, and the lowering position of the holder and the lowering position of the pad mounting plate are individually regulated by the positioning member that abuts them. Therefore, since the position M% of the magnetic recording medium and the pad can be regulated by the accuracy of the positioning member, there is no accumulation of accuracy errors of the component parts or deterioration of their accuracy.Furthermore, the accuracy of the holder and pad mounting By biasing and suspending the plate downwardly with respect to the vertical movement frame, the holder and the pad attachment plate can be stably brought into contact with the positioning member, and the positioning accuracy of these can be improved.

[Brief explanation of drawings]

Figure 1 is a side view showing an embodiment of the magnetic recording medium loading device of the present invention, Figure 2 is a plan view of the same, Figures 3 and 4 are front views showing the unloading state and loading state, respectively. FIG. 5 is a perspective view showing an example of a conventional loading device, FIG. 6 is a view taken in the direction of the ■ arrow in FIG. 5, and FIG. 7 is a sectional view taken along the line ■--■ in FIG. 6. 10...Magnetic recording medium, 1]...Jacket, 12
... Magnetic disk, 13... Hub, 14... Mountain center hole, 15... Magnetic head entry hole, 16... Pad entry hole, 40... Heath, 41... Spindle motor, 41a... Hub support surface, 42... Horizontal moving cam plate, 43... Drive gear, 44... Vertical moving frame, 45...
...Holder, 45a...Insertion port, 46...Pat mounting plate, 47...Back and forth movement prevention roller, 48...Guide rail, 49...Roller, 50...Vertical guide groove, 51 .54... Compression spring, 53... Suspension shaft, 55
...Pad, 56...Vertical movement roller, 57...
- Cam groove, 6], 62.63...Positioning pin for jacket (positioning member), 64.65...Positioning pin for pad (positioning member). Patent Applicant: Asahi Optical Industry Co., Ltd. Agent: Kunio Miura, Shigeto Matsui, Yoshimi Sasayama, Figure 2, Figure 3, Figure 4

Claims (1)

[Claims] In a device that loads a magnetic recording medium, in which a magnetic disk is housed in a jacket having a pad insertion hole, onto a drive motor that drives the magnetic disk, the drive motor is mounted on a base that is perpendicular to the plane direction of the magnetic recording medium. A vertically moving frame is provided which is driven in a direction in which the magnetic recording medium is inserted into and removed from the vertically moving frame, and a pad mounting plate having a pad that enters into a pad insertion hole is mounted on the vertically moving frame.
In addition to supporting each vertically movably, an elastic means is provided to bias the holder and the pad support plate to move toward the base, and furthermore, when the vertical movement frame is lowered, the holder and the pad mounting plate are individually attached to each other on the base. 1. A loading device for a magnetic recording medium, characterized in that a positioning means is provided for regulating the downward position of the magnetic recording medium by coming into contact with the magnetic recording medium.