JPS6236778A - Front loading mechanism for rotary disk device - Google Patents

Abstract

PURPOSE:To set accurately a disk pack by using an outer holder, an inner holder, setting means and a means which controls the 1st and 2nd drive means in response to the position of the disk pack. CONSTITUTION:When a disk pack 1 is put into slit of an inner holder 4, the 1st drive means works to carry the pack 1 toward the inside of the holder 4. Then the 2nd drive means starts its action to drive an outer holder 3 toward a center spindle 9. When the holder 3 is set closest to the spindle 9 and the spindle 9 is set completely into a shaft hole 18 of the pack 1, a pressure bar 43 of a setting means presses a center hub 14 of the pack 1 toward the spindle 9. The disk of the pack 1 is set at a prescribed position in a prescribed posture to the spindle 9. Then a control means works so that the 2nd drive means drives the holder 3 by a prescribed degree in the direction where the holder 3 is separated from the spindle 9 and then stops the holder 3.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention provides a disc pack that rotatably stores a disc for signal recording or reproduction in a case, and a disc pack for rotatably storing a disc for signal recording or reproduction in a case. It relates to a loading mechanism that transports and sets the device to a recording/playback position at the back of the device.

(Prior Art) A so-called electronic still camera device that records an image signal on such a disk pack or reproduces the signal as a still image is being developed.

An electronic still camera device is comprised of, for example, a camera for recording image signals on a magnetic disk of a disk pack, and a reproducing machine for reproducing the recorded magnetic disk.

As shown in Figure 9, a disk pack used in an electronic still camera has a plurality of positioning reference holes (11) (
A magnetic disk (16) is rotatably housed in a flat, approximately square hard disk pack 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), and a dustproof shutter (13) is provided to open and close the sincerity (17). 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 (1) of the center valve (14) of the disc (16)
8) has a substantially triangular shape with a negative side curved into an arc shape, and a center spindle (9) connected to a drive motor (not shown) is fitted in an interference fit state, and the center spindle (9) Rotationally driven by.

Various types of loading mechanisms have been proposed for setting the disc pack (1) at the signal recording/reproducing position in a camera or a player, but one that is particularly easy to operate in a player. is an important condition.

A so-called front loading mechanism is adopted as a loading device for a cassette type video table recorder (VTR) in consideration of stirring performance and the like. In this mechanism, by inserting the tape cassette into the cassette insertion slot provided on the front panel and pushing it slightly toward the back, the tape cassette is automatically transported horizontally and vertically toward the signal recording/playback position within the device. It is transported and set.

(Problems to be Solved) Therefore, the applicant attempted to employ the above-mentioned 70-introduction method in an electronic still camera device, but it was found that there were the following problems.

That is, when the disk pack (1) is conveyed horizontally and then conveyed vertically to fit the shaft hole (18) of the center hub (14) into the center spindle (9), the shaft hole (18) and the spindle (9) Since there is no play between the hub (1
4) must be pushed into the spindle (9), and at this time the disk (16) may be pushed in at an angle with respect to the spindle (9).

Therefore, the disk (16) rotating at high speed is connected to the case (10).
), which causes severe surface vibrations, resulting in the problem of not being able to record or reproduce correct signals.

In addition, reference surfaces for positioning are formed at multiple locations on the lower surface of the case of the disc pack (1), and the reference holes ( 11) (12) and the reference surface must be accurately engaged.

However, in the 70° loading mechanism used in VTRs, the holder that directly holds the cassette moves from horizontal movement to vertical movement along an L-shaped guide groove. If you want to change the conveyance direction of the holder from horizontal to vertical midway through the process, but still have smooth movement, 8. Holder and Loading! There is no choice but to provide an appropriate 11V voltage between the

In the case of a VTR, even if the positioning accuracy of the holder and thus the tape cassette is somewhat poor, as long as the tape pulled out from the cassette is wound around the VTR cylinder with high precision, there will be no problem in recording and reproducing signals.

On the other hand, in the case of an electronic still camera device, the setting position of the disc pack becomes its mother record/playback position, so as mentioned above, the disc pack (1) is provided with a positioning reference hole (11). The disc pack (1) is positioned by tightly fitting the reference hole (11) into a positioning pin in the device.

Therefore, when the front loading mechanism of a VTR is implemented in an electronic still camera device, there is a risk that the positioning reference hole of the disc puncture (1) will not fit into the positioning bin due to poor positioning accuracy of the holder.

(Means for solving the problem) The object of the present invention is to provide a front loading mechanism that can accurately set the disc pack (1).

The 70-ton loading aht of the present invention includes an outer holder (3) provided so as to be able to approach and separate from a center spindle (9) connected to a drive motor, and the outer holder (3).
) with a predetermined margin in the approach/separation direction to accommodate and hold the disc pack (1) in a removable manner, and a disc pack inserted from the insertion opening of the inner holder (4). (1) to the back of the holder or ejected to the insertion slot; 14) on and off the center spindle (9); a setting means for defining the fitting position and attitude of the disk pack (1) with respect to the center spindle (9); and the first and second drive means. and means for controlling the operation of the means according to the position of the disk pack.

The setting means is configured to press the center hub (14) of the disc pack (1) fitted into the center spindle (9) toward the spindle side when the outer holder (3) approaches the center spindle (9), and holder(
3) It is provided with a pressing piece (43) that releases the compression when separated from the side center spindle (9).

(For cattle) When the disc pack (1) is inserted into the insertion slot of the inner holder (4), the first drive means is operated by a command from the control means, and the disc pack is inserted into the back of the holder. Transport to the department. As a result, the disk pack (1) is positioned with the shaft hole (18) aligned with the shaft of the center spindle (9).

The second drive means then starts operating and the outer holder (3)
is driven toward center spin (9).

In this process, the inner holder (4) moves together with the outer holder (3) due to gravity or, if necessary, the biasing force of a compression spring interposed between the two holders (4) and (3).
As a result, the shaft hole (18) of the disk pack (1) covers the tip of the center spindle (9).

Further, the outer holder (3) is driven toward the center spindle, and the inner holder (4) is engaged with the outer holder (3) at its free end, or as required, the above-mentioned It is pressed toward the center spindle by the bias of the compression spring. This will result in a disk pack (1
), the shaft hole (18) fits into the center spindle (9), and the disc pack case is lIr! It is positioned in close contact with the reference plane on i.

Also, the outer 1111 holder (3) is attached to the center spindle (
9) and the shaft hole (18) of the disc pack (1).
) is almost completely fitted into the center spindle (9), the pressing piece (43) of the setting means presses the center hub (14) of the disk pack (1) toward the spindle. As a result, the disks of the disk pack (1) are fitted and set in the spindle (9) at a predetermined position and attitude.

Next, under the control of the control means, the second drive means drives the outer holder (3) by a predetermined amount in the opposite direction, that is, in the direction away from the center spindle (9), and then stops. The predetermined amount is set within the play provided between the outer holder (3) and the inner holder (4). Therefore, the inner holder (4) remains stationary and the outer holder (4) remains stationary.
Only 3) is separated from the spindle (9).

At this time, the pressing piece (43) releases the pressing force on the center hub (14) of the disc pack (1). As a result,
The disk (16) can be freely rotated inside the disk pack case (10).

In this state, the center spindle (9) is driven to rotate,
Disc (16) high i! The signal is reproduced and recorded by rotation.

When the unlowering disc pack (1) is ejected from the device, the second drive means is driven under the control of the control means, and the outer holder (3) is moved to the end of the movement in the direction of further separating the outer holder (3) from the center binder (9). Move it up to

At this time, after the play with the outer holder (3) is completely absorbed, the inner holder (4) is driven in the direction away from the center spindle (9) by being engaged with the outer holder (3) at the margin end. be done. This will cause the disk pack (
1), the shaft hole (18) is disengaged from the center spindle (9) and set to a position where it can be driven by the first driving means.

Next, under the control of the control means, the first drive means starts operating and transports the disk pack (1) inside the inner holder (4) toward the holder insertion opening. As a result, the disk pack (1) can be taken out from the Vt position.

(Effects and Effects of the Invention) 70-T loading 8 of the present invention! In this structure, the inner holder (4) and the outer holder (3) are driven only in one direction, toward or away from the center spindle (9), and the driving direction does not change midway, so both It is easy to increase the positioning accuracy of the holder, and therefore the disc pack (1) can be accurately set at the recording/reproducing position within the apparatus.

Further, the disk (16) in the disk pack (1) is fitted and fixed in the correct posture and position with respect to the center spindle (9) by being pressed by the pressing piece (43).

Therefore, the disk (16) does not cause surface vibration when rotating at high speed, and correct signals are recorded and reproduced.

(Example) FIG. 1 shows an example in which the 70-inch loading mechanism of a rotating disk device according to the present invention is used as a playback device of an electronic still camera device.

The base (2) has a center spindle (9) in the center of the top surface.
It also has a built-in motor (not shown) for rotationally driving the spindle (9). An inner holder (4) and an outer holder (3) that engage with each other with vertical play are supported on side plates (20) (20) erected on both sides of the base (2) so as to be movable up and down. There is.

The inner holder (4) has disc packs (
1) Guide grooves (40) for guiding horizontal movement of (40)
), and the disc pack (1) inserted from the entrance side of the guide groove is conveyed to the inner part of the holder along the guide groove and held by the ml drive means described later.

There are slide pins (41) on both sides of the inner holder (4).
(41) projecting outward, and slide holes (31) (31) opened vertically in both side walls of the outer holder (3)
The inner holder (4) is inserted into the slide hole (31).
It is possible to move up and down within the range of .

The outer holder (3) accommodates and holds the inner holder (4) movably up and down within a predetermined range as described above, and also has a plurality of pins (32) (33) protruding outward from both side walls.
)(34)(37) are the side plates (20)(20) of the base (2)
) A front guide hole (21) and a rear guide hole (22) opened in the longitudinal direction at the ends of the front and back directions, respectively! : Fits in and can be moved up and down within the guide hole.

Further, on both side walls of the outer holder (3), raw glazes (30) (30) are engaged with drive arms (60) (60), which will be described later.
Each of them protrudes outward.

Between the upper surface of the inner holder (4) and the inner surface of the outer holder (3) are first to fifth coil springs (7) (72).
(73), (74), and (75) are interposed. As a result, both holders (3) and (4) are urged to move away from each other vertically, and under normal conditions when the disc pack (1) is not loaded, the inner holder (4) has the slide pin (41) slidable. It hits the lower edge of the hole (31) and is held at a position farthest from the outer holder (3).

In addition, the first coil spring (7) and the second coil spring (72)
) and the fifth coil spring (75), as shown in FIG. 5, each consist of an outer spring (70) and an inner spring (71) arranged coaxially. The outer spring (70) is attached to the outer holder (3
) and the inner holder (4), and the inner spring (7
1) is a hole (44) whose upper end is fixed to the outer holder (3) and whose lower end is opened in the inner holder (4).
It corresponds to

As shown in FIGS. 1 and 2, a roller support frame (51) is disposed above the inner holder (4).
A pair of rollers (50) (50) are pivotally supported on 51), and a spur gear (54) device for transmitting rotational force to the rollers (50) (50) is provided.
1ii+:l-? (50) (50) is the inner holder (
The disc pack (1) is placed in a position where it comes into contact with the upper surface of the disc pack (1) to be loaded into the holder with a predetermined pressure, and it is possible to transport the disc pack (1) into the holder.

A power shaft (52) is connected to the spur tooth Ia rock mechanism 54), and both ends of the power shaft (52) are connected to the drawing board (2) of the base (2).
0) (20), and a PtIJ1 motor (5) is connected to the left end via a bevel gear mechanism (53).

Further, at the bottom of the back of both side plates (20) (20) of the base (2), there is an L-shaped arm (60) having a groove (64) at the tip.
) (61) is installed so that it can rotate freely.

In the grooves (64) of both the arms (60) (60), there are main shafts (30) (30) protruding from both side walls of the outer holder (3).
is engaged.

A fan-shaped gear (63) is fixed to the tip of the shaft 7) (61) that protrudes from the base right side plate (20).
A worm gear (62) protrudes from the output shaft of the motor (6).
) is in 1 conjunction.

As shown in Figures 2 and 6, the inner holder (4) has a pair of pressing pieces (43) (43) at its tip in the center of the upper surface.
The base end of a plate-shaped spring piece (42) protruding downward is fixed, and both pressing pieces (43) (43) are attached to the inner holder (
4), and is located above the center hub (14) of the disk pack (1) loaded in the inner part of the disc pack (4), and can press down the center hub (14) by elastic deformation of the spring piece (42).

On the other hand, the spring piece (4) is attached to the inner surface of the outer holder (3).
2) A contact piece (36) is provided to protrude downward, facing the free end side.

As shown in Figures 1 and 8 (a) to (c), the inner holder (4) has a light emitting part (83) and a light receiving part (82), respectively, facing the insertion space of the disk pack (1). Naru 3
A set of seven sensors (8), (80), and (81) are provided. The position of each 7r) sensor is determined according to the horizontal transport mode of the disk pack (1), as will be described later.

In addition, a shielding plate (35) is fixed to the third pin (34) and fourth bin (37) that protrude from the rear of the right gIII wall of the outer holder (3), and the shield plate (35) is fixed to the right side of the base (2). Board (2
0) has three sets of 7 sensors (84) (85) (86
) is arranged opposite to the transition path of the shielding plate (35).

The position of each of the seven sensors is determined according to the vertical transport mode of the disk pack (1) and the position of the outer holder when setting is completed, as will be described later.

The first and second motors (5) and (6) are connected to a control circuit (not shown) to control the rotation direction and rotation angle. The control circuit also includes the first to sixth seven sensors (8) (80) (81) (84) (85) (86).
A signal from is input as a control switching command signal.

Thus, from the first motor (5) to the rubber a-ra (50) (5
0) constitutes a first drive means, and a series of drive mechanisms from the second motor (6) to the main shafts (30) constitutes a second drive means. In addition, a pressing piece (43
) and the abutment piece (36) constitute a setting means. Furthermore, the first to sixth photosensors and the control circuit constitute a control means.

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

When the disc pack (1) is inserted into the insertion slot of the inner holder (4), the disc pack (1) is inserted into the 17th hole just before the tip g1 contacts the roller (50). Sensor (8
) to block the optical path! m8 (see figure (a)), this starts the first motor (5) and drives the rollers (50) (50).
Rotate. When the disk pack (1) is further pushed into the back of the holder, the leading end of the disk pack (1) bites into the rotating roller (so), and is thereafter conveyed to the back by the drive of the roller.

When the disk pack (1) is completely loaded into the inner holder (4), the optical path of the 37th optical sensor (81) is blocked by the disk pack (1) (see FIG. 8(b)). This causes the first motor (5) to stop and the rotation of the rollers (50) (50) to stop. As a result, the disc pack (1) in 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 (9) (see diagram #S2). .

Immediately before the first motor (5) stops, the second motor (6) starts, and the arms (60) (60) rotate in the direction of the arrow in FIG. This causes the outer holder (3) to
The fourth to fourth pins (32, 33, 34, and 37) are guided by the front and rear guide holes (21, 22) and pushed downward (see FIG. 3).

At this time, the inner holder (4) is attached to the first to fifth springs (7).
) (72) to (75).

Also ff11, second and fifth springs (7) <72) (75)
The tips of the inner springs (71) pass through the holes (44) formed in the inner holder (4), respectively, and are attached to the disc pack (1).
Press down on the top surface of the This will result in a disk pack (1)
The shaft hole (18) is fitted to the center spindle (9), the reference holes (11) and (12) are fitted to the positioning pins (90) on the base (1), and the disc pack case (10) The reference surface formed on the bottom surface of the positioning seat (91)
It is positioned and fixed in close contact with the

Also, as the outer holder (3) descends, the contact piece (36)
presses the spring piece (42) downward. Outer holder (3
) are inserted into the front guide hole (21) and rear guide hole (22) of the side plate (20), respectively.
), and when the outer holder (3) is located at the lower end of movement, the pressing pieces (43) of the spring piece (42) press against the center hub (14) of the disc pack (1). ) (see Figure 6).

As a result, the magnetic disk (1) in the disk pack (1)
6) is accurately set in a predetermined attitude and position orthogonal to the center spindle (9).

When the outer holder (3) reaches the downward transition end as described above, the shielding plate (35) blocks the optical path of the 67th otosensor (86). As a result, the second motor (6) temporarily stops, and then starts rotating in the opposite direction.

Driven by the second motor (6), the outer holder (3) starts to rise, and at the raised position, the shielding plate (35)
) blocks the optical path of the 57th sensor (85), thereby stopping the second motor (6) (see FIG. 4).

At this time, the inner holder (4) is attached to the first to fifth springs (7H
72) to (75) remain under pressure,
The contact piece (36) moves away from the spring piece (42), and the spring piece (42) elastically returns to the position of the pressing piece (43) (4).
3) releases the downward pressure on the center hub (14).

As a result, the disk (16) of the disk pack (1) becomes free to rotate and roll, and loading is completed.

Since the disk (16) is fitted exactly orthogonally to the center spindle (9), the center spindle (9)
9) Rotates at high speed without causing surface vibration.

7 When the eject button (not shown) provided on the front panel of the rolling regenerator is operated, the second motor (6) further starts rotating in the direction of raising the outer holder (3) from the state shown in Figure m4. . As a result, the outer holder (3) is driven upward until the shielding plate (35) blocks the optical path of the optical sensor (84) in FIG. 4, and returns to the state at the start of descent as shown in FIG.

In this process, first the slide hole (3) of the outer holder (3)
1) The lower edge of (31) is the slide bin (41) (41)
) and further rise of the outer holder (3), the inner holder (4) is driven upward together with the outer holder (3). As a result, the disc (16) is detached from the center spindle (9) and the disc pack (16) is released from the center spindle (9).
) is a rubber roller (50 mm) at the rising end of the outer holder (3).
) (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.

Disk pack (1) includes rubber rollers (50) (50)
is transported toward the holder insertion slot by the drive of the holder.

As shown in Figure 8(c), the disk pack (1) is m2
When the optical path of the photosensor (80) is opened, the first motor (5) stops, and the disk pack (1) is moved to the roller (50) at a position at a distance gll of approximately 1 to 2 a+m from the ground edge on the rear side of the device. It is in a locked state. At this time, the disk pack (1) is equipped as shown in Figure 1! It will come out and be ready to be taken out.

In addition, when the loading start button (not shown) provided on the front panel is operated from the disc back locked state, the first motor (5) starts rotating in the loading direction again, and the same loading operation as described above is performed. will be carried out.

Therefore, when regeneration is remotely controlled using a remote control switch, loading and unloading operations can be repeated without touching the disc pack.

The front loading mechanism is not only excellent in operability and reliability, but also because the drive means shown in FIG. 1 and the second drive means are each compactly constructed, so that the entire device can be miniaturized.

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

For example, as shown in FIG. 7, a driven roller (55) may be disposed below the rubber roller (50) to facilitate conveyance of the disk pack (1).

[Brief explanation of drawings]

FIG. 1 is a partially cutaway perspective view showing an embodiment of a 70-ton loading PR structure of a rotating disk device according to the present invention, and FIG.
The figure is a front view when horizontal conveyance is completed, Figure 3 is a front view when vertical conveyance is completed, Figure 4 is a front view when setting is completed, and Figure 5 is a front view when horizontal conveyance is completed.
The figure is a sectional view of the spring interposed between the outer holder and the inner holder, Figure 6 is a perspective view of the setting means, and Figure 7 is a sectional view of the spring interposed between the outer holder and the inner holder.
The figure is a side view showing the main parts of another embodiment, and Fig. 8(a) to (
c) is a side view for explaining the operation of the control means, and FIG. 9 is a perspective view of the disk pack.

Claims (1)

[Claims] [1] Center spindle (9) connected to a drive motor
an outer holder (3) provided so as to be able to approach and separate from the
an inner holder (4) that engages with the outer holder (3) with a predetermined margin in the approach/separation direction and stores and holds the disc pack (1) in a removable manner;
4), a first drive means for transporting the disk pack (1) inserted from the insertion opening to the back of the holder or ejecting it to the insertion opening, and a center spindle (9) for transporting the outer holder (3).
a second driving means for transporting the disk pack (1) toward the center spindle (9) to fit and remove the center hub (14) of the disk pack (1) in the inner holder (4); ) and controlling the operation of the first and second driving means in conjunction with the first and second driving means to convey the disc pack (1) to the setting position. and the setting means is configured to set the center hub (14) of the disc pack (1) fitted on the center spindle (9) when the outer holder (3) is closest to the center spindle (9). A front loading mechanism of a rotating disk device comprising a pressing piece (43) which presses towards the side and releases said pressing when the outer holder (3) is separated from the center spindle (9). [2] The setting means includes a pressing piece (43) at the free end of the spring piece (42), one end of which is fixed to the inner holder (4).
Claim 1, wherein the outer holder (3) is provided with a protruding contact piece (36) that can press the spring piece (42) by moving relative to the inner holder (4). front loading mechanism.