JPS63131368A - Loading mechanism for rotary disk device - Google Patents

Abstract

PURPOSE:To obtain a loading mechanism with a simple structure by driving an outer holder upward/downward so as to carry a disk cartridge loaded from a device opening port horizontally and vertically, thereby setting it to the recording/reproducing position. CONSTITUTION:The disk cartridge 1 is set by driving the outer holder 3 upward/ downward. Thus, a loading mechanism is equipped with a vertical carrying means and a horizontal carrying mechanism is equipped directly with the mechanism to constitute the front loading mechanism in a rotary disk device easily. The outer holder 3 has only to be driven unidirectionally over the entire range from the start to the end of the loading and since the mechanism reversing the carrying direction on its way is eliminated, the device is simplified.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention transports a disk cartridge rotatably storing a magnetic disk for signal recording or reproduction to a recording/reproducing position at the back of the device. This relates to loading ati to be set.

(Prior Art) Electronic still camera devices, which have been developed in recent years, record image signals on a disk cartridge containing a rotating magnetic disk or reproduce the signals as still images. It consists of a camera for recording on magnetic disks and a player for playing back the recorded magnetic disks.

A disk cartridge used in an electronic still camera has a positioning reference hole (11) on the outer periphery as shown in Figure 12.
A magnetic disk (16) is rotatably housed in a flat, approximately square hard disk cartridge case (10) with an opening (12) in the radial and axial directions with some play. A window (17) is provided on the surface of the case to expose the magnetic disk (16).
) is equipped with a dustproof shutter (13) that can be opened and closed. Also, holes (15) are provided in the center of both sides of the case to correspond to the center hub (14) of the disk (16).

The shaft hole (18) opened in the center hub (14) of the disk (16) has a substantially triangular shape with the - side curved in an arc shape, and the shaft hole (18) is formed in the center spindle (2) connected to the motor.
3), the disk (16) is driven to rotate at high speed by tightly fitting the center hub (14) into the disk (14).

In order to set the disc (16) in an accurate position relative to the center spindle (23), the center hub (1
4) to the center spindle (23) has been proposed (Japanese Patent Laid-Open No. 60-5756).
No. 6 (C11B171035)).

In this device, a lid body is pivotally supported to be able to be opened and closed by rM on a device body in which a center spindle is provided, and an inner packet that removably accommodates a disk cartridge is sandwiched between the device body and the lid body and is pivotally supported. A pressing member for pressing the disk cartridge in the inner packet is disposed on the back surface of the lid, and when the lid is closed, the center hub of the disk cartridge is fitted to the center spindle.
Thereafter, by rotating the lid halfway in the opening direction and locking it, the pressing member is separated from the center hub.

(Problem to be Solved) However, in the above-described attachment/detachment device, two operations are required: after inserting the disk cartridge into the inner packet, and then pushing down the lid to engage it with the device body, which is cumbersome. . In order to solve this problem, it is effective to adopt the so-called front loading AM, which is installed in recording and reproducing devices such as VTRs (video tape recorders). In this case, it is impossible to employ a single front loading mechanism. However, after the center hub of the disk cartridge is fitted to the center spindle, the lid body is slightly reversed in the opening direction, thereby separating the pressing member from the center hub and locking the lid body to the main body of the device. However, there was a problem in that an extremely complicated mechanism was required.

(Means for Solving the Problems) An object of the present invention is to enable the adoption of a front loading mechanism that horizontally and vertically transports a disk cartridge inserted through an opening of the device and sets it to a recording/reproducing position. To provide a loading mechanism with a simple structure capable of fitting a center hub to a center spindle in an accurate position and orientation.

In the loading #R side according to the present invention, the outer holder (3) is moved H before approaching the center spindle (23).
The outer holder (3) is movably provided with an inner holder (4) for removably housing and holding the disk cartridge (1). The inner holder (4) can move upward independently in the same direction as the outer holder within the margin formed between the inner holder (4) and the outer holder (3). The spring is biased toward the center spindle (23).

The outer holder (3) is equipped with a cam (7) that rotates in conjunction with the reciprocating movement of the outer holder, and is also equipped with a pressing mechanism linked to the cam (7). The pressing mechanism includes a pressing piece (43) that presses the center hub (14) of the disk cartridge (1) in the inner holder (4) in the axial direction toward the center spindle (23).

The outer holder (3) is slightly before the transition end towards the center spindle (23) and the inner holder (4)
When the cam (7) moves the pressing piece (43) toward the center spindle (23), the outer holder (3) moves from the pressing position. During the end movement, the cam (7) forces the pressure piece 43) gi away from the center spindle (23).

(Function) Before loading starts, the outer holder (3) is set at the transition end farthest from the center spindle (23), and the inner holder (4) is moved by the spring force to the outer holder (3).
3) Descends to the bottom. Also, the cam (7) has a pressing piece (4
3) is moved in a direction away from the center spindle (23).

By loading the disk cartridge (1) into the inner holder (4), the center hub (14) is positioned coaxially with the center spindle (23).

Next, the outer holder (3) is connected to the center spindle (23).
In the process of being driven towards the inner holder (4), the inner holder (4) moves together with the outer holder (3) and approaches the center spindle, and the cam (7) starts rotating in conjunction with the outer holder (3). When the outer holder (3) moves to the pressing position,
The center spindle enters the center hub of the disk cartridge, and the inner holder (4) is pressed toward the center spindle (23) by the bias of the spring.
1) is set at a predetermined recording/reproducing position. At the same time, the cam (7) moves the pressing piece (43) toward the center spindle (23), and the pressing piece (43)
is the center hub of the disk cartridge (1) <14)
is pressed in the axial direction toward the center spindle (23). As a result, the center hub (14) fits into the center spindle (23) at a predetermined depth and attitude.

Further, in the process of the outer holder (3) moving from the pressing position to the transition end, the cam (7) changes its engagement position with the pressing mechanism and separates the pressing piece (43) from the center spindle (23). As a result, the pressing piece (43) releases the pressing force on the center hub (14) of the disk cartridge (1), and the loading operation is completed.

As a result, disk (1) of disk cartridge (1)
6) is set in a freely rotatable position and in an accurate posture within the disk case (10). Therefore, the disk (16
) rotates at high speed, no surface vibration occurs, and correct signals are recorded and reproduced.

(Effects of the Invention) According to the loading mechanism according to the present invention, the disk cartridge (1) is set by driving the outer holder 3) up and down.
A front loading mechanism in a rotary disk device can be easily constructed by equipping this mechanism as a vertical conveyance means and by connecting and equipping this mechanism with a well-known horizontal single-shell conveyance mechanism.

According to the loading mechanism according to the present invention, the outer holder (3) only needs to be driven in one direction over the entire range from the start to the completion of the loading movement ffE, and unlike conventional devices, the outer holder (3) only needs to be driven in one direction. Since no mechanism for reversing is required, the device can be simplified compared to conventional devices.

(Example) FIGS. 1 to 6 show the loading NjR of the rotating disk device according to the present invention at the front 1 of the electronic still camera device.
- Shows an example of implementation in a loading mechanism.

The base (2) has a center spindle (23) connected to a drive motor in the center of the recording/reproducing position where the disk cartridge (1) is to be set, and a side plate (20).
An outer holder (3) is supported in the (20) so as to be movable up and down, and an inner holder (4) that removably accommodates the disc cartridge (1) is inside the outer holder (3).
It is arranged so that it can move relative to the outer holder (3) in the vertical direction.

The inner holder (4) has guide grooves (40) on both sides of the inner surface to guide the horizontal movement of the disk cartridge (1).
(40), and the disk cartridge (1) inserted from the entrance side of the guide groove is automatically conveyed to the inner part of the holder along the guide groove and held, as will be described later.

There are slide bins (41) (4) on both sides of the inner holder (4).
1) protrudes outward and fits into slide holes (31) (31) vertically opened on both side walls of the outer holder (3), and the inner holder (4) is inserted into the slide holes (31). Movement in the vertical direction is guided within the range.

The outer holder (3) has a plurality of bottles (32) (33) (34) (37) protruding outward from both side walls in the front and back direction of the side plates (20) (20) of the base (2). It fits into a front guide hole (21) and a rear guide hole (22), which are vertically opened at the ends of the body, and is guided to move vertically within the range of the guide holes.

Further, on both side walls of the outer holder (3), there are main shafts (30) (3) with which drive arms (60) (60) to be described later are engaged.
0) respectively protrude outward.

First to fifth coil springs (9) (92) (
93) (94) (95) are interposed. As a result, both holders (3) and (4) are urged to move away from each other up and down, and under normal conditions when the disk cartridge (1) is not loaded, the inner holder (4) has the slide pin (41) slide. It hits the lower edge of the hole (31>) and is held at the position closest to the center spindle (23).

In addition, the first coil spring (9) and the second coil spring (92
> and the fifth coil spring 95) are each constructed by coaxially providing an outer spring (90) and an inner spring (91), as shown in FIG. The outer spring (90,) is attached to the outer holder (3
) and the inner holder (4), and the inner spring (91
) has an upper end fixed to the outer holder (3), and a lower end corresponding to the hole (44>) formed in the inner holder (4).

As shown in FIGS. 1 and 2, above the inner holder (4) is a roller support frame (51) on which a pair of rubber rollers (50) (50) for transporting the disk cartridge (1) is pivotally supported. ) are installed. The roller (5o) (50
) is connected to the first motor (5) via a spur gear v1 oval (54), a power shaft (52), and a bevel gear R structure (5'3). As shown in Fig. 4, the roller support frame (51) can freely rotate around the power shaft (52), and is pushed downward by a spring (58) provided between it and the base upper wall (26). While being biased, the end of rotation is regulated by a stopper (57). This allows both rollers (
50) (50) applies a predetermined pressure to the top surface of the disk cartridge (1) to be loaded into the inner holder (4) from the outside of the hole (46) made in the earthen wall of the inner holder (4). The disc cartridge (1) can be transported into the boulder.

As shown in Figures 1 and 2, both side plates (2) of the base (2)
0) (20) There is a U-shaped 7-m (60
) is provided with a protruding shaft (61) that is freely rotatable. A main shaft (30) protruding from both side walls of the outer holder (3) is engaged with the main shaft (64) of the arm (60).

A fan-shaped gear (63) is fixed to the tip of the shaft (61) that protrudes from the base right side plate (20), and meshes with a worm gear (62) that protrudes from the output shaft of the second motor (6). are doing.

Further, as shown in FIG. 3, a plate-shaped spring piece (42) having a pair of pressing pieces (43) protruding downward from its tip is mounted at the center of the upper surface of the inner holder (4). The ends are fixed to the inner holder (4) and both pressing pieces (43) (43
) is caused by the elastic deformation of the spring piece (42), causing the inner boulder (
4) Center hub (
14) It is possible to lower the pressure. Also, the spring piece (4
2) is provided with a protruding cam follower (45) for a cam (7) to be described later.

On the other hand, the spring pieces (4) are attached to both side walls of the outer holder (3).
A cam shaft (73) equipped with a cam (7) at a position opposite to
) is installed to freely rotate, and the camshaft (73) has a binion (74) fixed to the end of the camshaft and the base (2).
An interlocking fi fi (76) consisting of a rack (75) fixed to the side plate (20) connects the two by 3%. The cam (7)
is a convex portion (71) formed by a cylindrical surface with a large outer diameter.
) and a recess (7) formed by a cylindrical surface with a small outer diameter.
2).

As shown in FIG. 1 and FIGS. 11(a) to (c), the inner holder (4) has a light emitting section (83) and a light receiving section (82) disposed across the loading space for the disk cartridge (1). )
First to third photosensors (8) (80) consisting of
(81) is arranged at a predetermined position which will be described later.

Further, as shown in FIG. 1, a shielding plate (35) is fixed to the third bin (34) and the fourth bin (37) that protrude from the rear right side wall of the outer holder (3), and the base ( 2) The right side plate (20) has fourth and fifth photosensors (84).
(85) is disposed at a predetermined position, which will be described later, opposite the transition path of the shielding plate (35).

The first and second motors (5) and (6) are connected to the first to fifth photosensors (8) and (80) as shown in FIG.
Starting and stopping are controlled by a control circuit I''B (59) to which signals from (81), (84), and (85) are connected.

Thus, from the second motor (6) to the main shaft (30) (30)
A series of mechanisms and control circuits (59) leading to the outer holder (
3), the spring piece (42) has an oval shape and is equipped with a pressing piece (43) and a cam follower (45).
Configure ti.

The operation of the loading mechanism will be described in detail below.

Loading: When the disc cartridge (1) is inserted into the insertion slot of the inner holder (4), the disc cartridge (1) is inserted into the optical path of the first photo sensor (8) just before the tip of the disc cartridge (1) contacts the roller (50). As shown in FIG. 11(a), the first motor (5) is activated and the roller (50) (
50). Furthermore, a disk cartridge (1
) is pushed into the back of the boulder, the leading end of the disc cartridge (1) bites into the rotating rollers (50), (50), and is thereafter transported to the back by the drive of the rollers.

When the disk cartridge (1) is completely loaded into the inner holder tank 1), the optical path of the third photo sensor (81) is blocked by the disk cartridge (1) (Fig. 11(b)). 1 motor (5) stops, and the rotation of the rollers (50) (50) stops. As a result, the disk cartridge (1) inside the inner holder (4)
is positioned so that the shaft hole (18) of the center hub (14) is aligned with the shaft of the center spindle (23).

Immediately before the first motor (5) stops, the second moke (6) starts, and the arm (60) (60) rotates in the direction of the arrow in FIG. This allows the outer holder (3) to hold the first to fourth bottles (32) (33) (34) (37
) to the front and rear guide holes (21) (22) of the base (2)
and is pushed down to the transition end closest to the center spindle (23).

Along with this, the inner holder (4) also descends, and the outer boulder (
3) has moved to the transition end closest to the center spindle (23), the inner holder (4)
The disk cartridge (1) inside the inner holder (4) is pressed downward by the springs (9) (92) to (95).
is lowered by the inner springs (91) of the first, second and fifth springs (9), (92) and (95). As a result, the reference holes (11) and (12) of the disk cartridge ridge (1) are aligned with the positioning bins (24) on the base (1), and the bottom surface of the disk cartridge case 10) is aligned. The formed reference surface comes into close contact with the positioning seat (25) and is fixed at a predetermined recording/reproducing position.

Also, when the outer holder (3) is lowered, 1'P is applied to the pinion (7).
4) is rotationally driven by the rack (75), and the cam (7) and the pressing mechanism operate as shown in FIGS. 7 to 10.

As shown in FIGS. 7(a) and 7(b), when the outer holder (3) is located at the upper transition end, the inner holder (4)
93) It is at the lower margin edge due to the momentum such as (94).

Also, at this time, the spring piece (42) is in a slightly elastically deformed state from its free state, and the cam follower (45) is in a state where the cam (7)
) is in contact with the starting point of the convex portion (71) of the 9 outer holder (
When the rotor (4) is lowered along with 3), the disc cartridge (1) is removed as shown in Figure 8 (a) and (b).
engages with the positioning seat (25) and the positioning pin (24), and the movement of the inner holder (4) is stopped. Also, in this process, the force l, (7) is applied to the outer holder (3) while rotating.
), lowering pressure on the cam follower (45).

As a result, the spring piece (42) is largely elastically deformed, and the pressing piece (43) presses the center hub (14) toward the center spindle (23). As a result, the center hub (14) starts to engage with the center spindle (23).

As the outer holder (3) further descends as shown in FIG. 9(a)(II), the end point of the protrusion (71) of the cam (7) comes into contact with the cam follower (45), and the pressing piece ( 43), press down even more strongly. As a result, the center hub (14) of the disk cartridge (1) fits into the center spindle (23) to a predetermined depth.

After the center hub (14) and center spindle (23) are completely fitted, the outer boulder (3) is further lowered,
As shown in FIG. 10(a)(1)), the lower transition end l\ is reached. As a result, the cam (7) rotates to an angle where the fourth part (72) faces the cam follower (45), and the spring piece (42) moves between the convex part (71) of the cam (7) and the fourth part (72). It will return elastically depending on the time. Accordingly, the pressing piece (43) is separated from the center hub (14) at 11'.

At the same time, the shielding plate (35) blocks the optical path of the fifth photo sensor (85), thereby stopping the second motor (6) and completing loading.

Unlow Ink 11 Eject river ((21) equipped on the front panel of the regenerator
(not shown), the second motor (6) starts rotating in the direction of raising the outer holder (3) from the state shown in FIG. As a result, the outer holder (3) is driven upward until the shielding plate (35) blocks the optical path of the fourth photo sensor (84), and returns to the state at the start of descent as shown in FIG.

In this process, first, remove the slide hole (31) of the outer holder (3).
) (31) lower edge is the slide bin (41) (41)
When the outer holder (3) comes into contact with and further rises, the inner holder (4) is driven upward together with the outer holder (3). As a result, the center hub (14) is separated from the center spindle (23), and the disk cartridge (1) is moved to the rubber roller (5) at the rising end of the outer holder (3).
0) (50).

In response to a command from the fourth photo sensor (84), the second motor (6) stops, and at the same time, the first motor (5) starts rotating in the opposite direction to that during loading.

The disk cartridge (1) has a rubber roller (5o) (
50), the holder is transported toward the holder insertion opening. As shown in FIG. 11(c), when the disk cartridge (1) opens the optical path of the second photo sensor (8o), the first motor (5) stops and the disk cartridge (1) When the distance between the wheels is approximately 1 to 2, the position of the canopy steel is locked by the roller (50). At this time, the disk cartridge (1) comes out of the apparatus as shown in FIG. 1 and becomes ready for removal.

In addition, when the loading start button (not shown) provided on the front panel is operated while the disk cartridge is locked, the first motor (5) starts rotating in the loading direction again, and the same loading operation as described above is performed. Be done.

Therefore, when the player is remotely controlled by the remote control switch, loading and unloading operations can be repeated without touching the disc cartridge.

The front loading v1 side not only has excellent operability and reliability, but also has a compact configuration of the first drive means and the second drive means, making it possible to downsize the entire device.

Moreover, since the vertical loading operation is performed only by the lowering operation of the outer holder (3), the operation for releasing the pressing of the center hub (14) by the pressing piece (43) is performed by moving the outer holder (3) upward. Conventional method 8! Compared to other systems, it takes less time to complete the loading operation, and the center hub (14) can be reliably fitted to the center spindle (23) with a constant pressing force. It has excellent effects such as no sudden load fluctuations in the loading motor.

It should be noted that the configuration of each part of the present invention is not limited to the above-mentioned embodiments, and it goes without saying that various modifications can be made within the technical scope of the claims.

For example, the loading mechanism described above can be implemented not only as an automatic loading mechanism in which the outer boulder (3) is driven by a motor, but also as a mechanism in which the outer boulder (3) is driven manually.

・1. [] Brief explanation of planes 1 [2I is a partially cutaway slope view showing one implementation of the loading mechanism of the rotating disk device according to the present invention, 20th is a front entrance, and 3rd is a cam and a pressing mechanism. FIG. 4 is a cross-sectional view showing the disk cartridge transport mechanism, and FIG. 5 is a perspective view.
The figure is a sectional view of the spring interposed between the outer holder and the inner holder, Figure 6 is a block diagram of the circuit that drives and controls the motor, Figures 7 to 10 are explanatory diagrams of the vertical loading operation, and Figure 6 is a block diagram of the circuit that drives and controls the motor. Figure 11 is an explanatory diagram of horizontal loading operation, Figure 12
The figure is a τI plane view of the disk cartridge.

(1)...disk cartridge (14)...Center hub

Claims (1)

[Scope of Claims] [1] A disk cartridge in which a magnetic disk equipped with a center hub in the center is freely rotatably housed is transported to a recording/reproducing position where a center spindle (23) is provided, and the center Place the hub on the center spindle (23)
In the loading mechanism of a rotary disk device that is fitted and set in a rotary disk device, an outer holder (3) is movably provided so as to move toward and away from the center spindle (23), and in the outer holder (3), Disk cartridge (
1) is provided, and the inner holder (4) is provided with an inner holder (4) that detachably stores and holds the inner holder (4), and the inner holder (4) is independent in the same direction as the moving direction of the outer holder within the margin formed between the inner holder and the outer holder. The center spindle (23) can be moved by a spring interposed between the outer holder (3) and the outer holder (3).
The outer holder (3) is equipped with a cam (7) that rotates in conjunction with the reciprocating movement of the outer holder. The mechanism is a disk cartridge (1) inside an inner holder (4).
The center hub (14) of the center spindle (23)
A center hub that is provided with a pressing piece (43) that presses in the axial direction toward the center hub, and the outer holder (3) is located slightly before the transition end toward the center spindle (23) and the inner holder (4) stops moving. When moved to the pressing position, the cam (7) pushes the pressing piece (43) onto the center spindle (2).
3), and while the outer holder (3) moves from the pressing position to the transition end, the cam (7) is moved toward the pressing piece (
43) is separated from a center spindle (23). [2] The loading mechanism according to claim 1, wherein the outer holder (3) is automatically reciprocated in conjunction with a conveying means. [3] The pressing mechanism includes a cam follower (45) for the cam (7) protruding from the center of a spring piece (42) that is disposed below the cam (7) and has one end fixed to the inner holder (4). The loading mechanism according to claim 1 or 2, further comprising a pressing piece (43) protruding from the other end of the spring piece.