JPS6126964A - Loading and unloading device of magnetic sheet pack - Google Patents

Abstract

PURPOSE:To attach assuredly the center core of a magnetic sheet to a drive shaft by pressing the center core to the drive shaft when an inner bucket containing the magnetic sheet is shifted and shunting a pressure member up to a position where no contact is secured with the center core when the shift of the bucket is through. CONSTITUTION:When an upper cover 28 containing a magnetic sheet pack 10 is pressed down toward a main body 24, a projection 66 of a cam 64 touches a projection 70 of a cam 68. Then a plate spring 52 is turned counterclockwise when the projection 66 rides over the projection 70. Thus a pressure pin 50 presses a center core 14, and a drive shaft 32 is put assuredly into a hole of the core 14. The cover 28 is pushed down further and the projection 66 reaches a recess part 71. Thus the spring 52 is turned clockwise, and the pin 50 gets apart from the core 14. As a result, a disk starts revolutions. Thus a magnetic sheet is attached assuredly to the shaft 32 by the pin 50. When the sheet is unloaded, the hook between a slide key 80 and a catch pin 100 is released. Thus the cover 28 can be opened easily with a slight amount of power.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a device for attaching and detaching a magnetic sheet pack, and is particularly used for a magnetic recording or reproducing device such as an electronic camera, and is used for a magnetic sheet on which still image information, etc. is magnetically recorded. This invention relates to a magnetic sheet pack attachment/detachment device with a built-in magnetic sheet pack.

[Background of the invention]

Recently, imaging devices such as solid-state image sensors and image pickup tubes are combined with recording devices that use magnetic disks, which are inexpensive and have a relatively large storage capacity, to take purely electronic still photographs of subjects using rotating magnetic disks. An electronic still camera system has been developed in which images are recorded on the camera and the images are played back using a separate television system or printer.

The magnetic disks used in such systems are usually in the form of magnetic sheet packs. A magnetic sheet pack rotatably stores a magnetic sheet for magnetically recording still image information, etc., and this magnetic sheet pack can be used in a magnetic recording device built into an electronic camera or a playback device that is integrated with or separate from the magnetic sheet pack. It is installed and used. When attaching the magnetic seat back to the magnetic recording device or playback device in an electronic camera, connect the center hole provided in the center core of the magnetic sheet in the magnetic sheet pack to the rotational drive shaft of the magnetic recording or playback device. Directly attaching the magnetic sheet pack to the magnetic recording or reproducing device is troublesome and inconvenient, and there is a possibility that the magnetic sheet pack cannot be accurately attached to the magnetic recording or reproducing device. In order to eliminate such troubles, a magnetic sheet pack attachment/detachment device has been proposed. The magnetic sheet pack is inserted into the inner bucket, and the magnetic sheet pack is inserted into the inner bucket, and then the upper lid is inserted into the inner bucket. By closing the magnetic sheet pack in the inner packet, the magnetic sheet of the magnetic sheet pack inside the inner packet is mounted on the rotational drive shaft of the mounting main body. A center core is provided in the center of the magnetic sheet, and the rotation drive shaft is fitted into the center hole of the center core to rotate the magnetic sheet in the magnetic sheet pack.

By the way, the center core of the magnetic sheet must be accurately mounted on the rotational drive shaft, and if this mounting is insufficient, there is a risk that the magnetic head will not accurately record or reproduce video signals on the magnetic sheet. For this reason, the conventional attachment/detachment device for magnetic sheet packs involves fitting the rotary drive shaft into the center hole of the center core of the magnetic sheet, attaching a magnet to the rotary drive shaft, and attaching the center core by attracting it to the drive shaft using magnetic force. Although a magnetic chuck method has been proposed, sufficient effects cannot be expected even with this method.

[Purpose of the invention]

The present invention has been made in view of the above circumstances, and proposes a magnetic seat back attachment/detachment device that can securely attach the center core of the magnetic sheet to the rotational drive shaft when loading the magnetic seat back into a magnetic recording/reproducing device. The purpose is to

[Summary of the invention]

In order to achieve the above object, the present invention is provided on a lid body or an inner bucket, and a center core of a magnetic sheet is activated through a cam mechanism during the closing operation of the lid body until the lid body reaches its normal closed state. It is characterized by having a pressing member that presses toward the rotational drive shaft and maintains a non-contact state with the center and core of the magnetic sheet when the lid is in the normal closed state.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the magnetic gear pack attaching/detaching device according to the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 shows a plan view of a magnetic sheet pack used in a magnetic recording or reproducing device such as an electronic camera, and FIG. 2 is a cross-sectional view taken along line nn in FIG. 1. As shown in FIG. 1, the magnetic seat back 10 has a substantially rectangular shape, and a magnetic sheet 12 on which still image information and the like are recorded is rotatably housed inside. A center core 14 as a reinforcing member 5 is provided in the center of the magnetic sheet 12, and the center core 14 is exposed to the outside through a circular opening 16 of the magnetic seat back 10. The magnetic seat back 10 has a window 1 in which a magnetic head, which will be described later, is located.
8 is open, and this magnetic head window 18 is opened and closed by a slidable shutter 20. That is, shutter 2
0 closes the window 18 to prevent dust from adhering to the magnetic sheet 12 before the magnetic seat back 10 is inserted into an inner bucket (described later), and when the magnetic seat back 10 is inserted into the inner bucket, the shutter 20 closes as shown in FIG. The upper part moves downward to open the navel r window part 18, and recording and reproduction on the magnetic sheet 12 becomes possible. Shutter 2 in magnetic sheet pack 10
A locking recess 22 is formed at the opposite end of the magnetic seat back 10, and these four portions 22 are used for temporarily securing the magnetic seat back 10 when inserted into the inner bucket.

FIG. 3 shows a magnetic recording and reproducing device, which is composed of a main body 24, an inner bucket 26, and an upper lid 28. As shown in FIG. First, the internal structure of the device main body 24 will be explained. A motor 30 for driving a magnetic seat is disposed inside the device main body 24, and a drive shaft 32 of this motor 30 is connected to the center core 14 of the magnetic seat back 10 shown in FIG. The magnetic sheet 1 is inserted into the center hole 15 and inserted into the magnetic sheet pad 10.
2 at a predetermined number of rotations. Also, in Figure 3, 34
36 is a lead screw connected to the output shaft of the motor 34; 38 is a guide shaft 40 screwed into the lead screw 36;
a head carriage, 42, guided and moved by
1 is a magnetic head provided on the hemlock carriage 38. Therefore, when the motor 34 is rotated at a predetermined number of rotations, the head carriage 38 is moved at a predetermined pitch in the axial direction of the guide shaft 40 by the rotation of the screw 36, and thereby the magnetic head 42 is moved in the radial direction of the magnetic sheet 12. The still image information can be recorded or reproduced on the magnetic sheet 12 for each trunk.

A bracket 44.44 (only the left side is shown) is provided at the end of the apparatus main body 24, and the inner bucket 26 and the upper lid 28 are pivotally supported on the bracket 44.44 via a pin 46. The upper lid 28 is configured to have a shape capable of housing the inner bucket 26 as shown in the figure.

Upper l! 28 is biased in the opening direction with respect to the device body 24 by a spring 29 shown in FIG. The bucket 26 is urged in a direction away from the upper lid 28. Therefore, as shown in FIG. 3, when the upper lid 28 is open, the inner bucket 26 is separated from the apparatus main body 24 and the upper lid 28, and the magnetic sheet pack insertion opening 48 of the inner bucket 26 is opened.

On the surface of the inner bucket 26 facing the main body 24, a fourth
As shown in the figure, each opening into which a rotating shaft 32 provided on the main body 24, a magnetic head 42, and a positioning pin (not shown) provided on the main body for positioning the main body and the magnetic sheet pack can be inserted is provided. have.

A locking member (not shown) is disposed at the side end of the inner bucket 26, and this locking member fits into the recess 22 of the magnetic sheet pack 10 inserted into the inner bucket 26 to hold the magnetic sheet pack 10 inside the inner bucket 26. Temporarily fasten.

Next, the center core pusher will be explained. The center core 14 is pushed toward the drive shaft 32 by push pins 50, 50 shown in FIGS. 4 and 5 when the top cover 28 is closed. As shown in FIG. 5, a pair of push pins 50 are provided at one end 54 of a leaf spring 52, and the other end 56 of the leaf spring 52 is fixed to a shaft 60 via screws 58 and 58. The shaft 60 is pivotally supported on both sides of the top cover 28 through bearings 62, 62 shown in FIG. At one end of the shaft 60,
A cam 64 is fixed, and a projection 6 is attached to the lower end of the cam 64.
6 is formed. On the other hand, a cam 68 is provided on the main body 24 at a position corresponding to the cam 64 when the upper lid 28 is in the closed position.
has been erected. The cam 68 has a protrusion 70 and is configured to have approximately the same shape as the cam 64, and is oriented in the opposite direction to the cam 64, that is, as shown in FIG. It is erected on the main body 24. Further, as shown in FIG. 4, a spring 72 is provided on the shaft 60, and the shaft 60 is biased to rotate clockwise.
The push pin 50.50 attached to one end of 2 has an upper M28
is pressed against the back side.

Further, a slide key 80 is attached to the front edge 78 of the device main body 24 so as to be slidable in the left-right direction. This slide key 80 has a long hole 82.82 formed therein.
Pins 84 and 84 protruding from the front edge 78 are fitted into the pins 82 to restrict the amount of movement of the slide key 80. A spring 86 is engaged with the right end of the slide key 80, so that the slide key 80 is biased rightward. A tapered portion 8'8 is formed at the upper end protrusion of the slide key 80, and a lateral groove 92 is formed from the terminal end of this tapered portion 88. On the other hand, a tongue piece 98 is formed on the front edge 96 of the front lid 28, and a retaining pin 100 is protruded from the tongue piece 98. Therefore, when the top cover 28 is closed against the main body 24, the stop pin 100 first comes into contact with the tapered portion 88, and when the top cover 28 is further pushed down, the slide key 80 moves to the left against the biasing force of the spring 86. Move to the stop pin 10
0 slides down the tapered portion 88 and then enters the lateral groove 92. When the slide key 80 is in the horizontal groove 92,
is pulled to the right by the spring 86, and the retaining pin 10
0 is locked in the transverse groove 92. The stop pin 100 is in the horizontal groove 9
2, the top 1i28 is in a closed position relative to the body 24.

The operation of the embodiment of the magnetic sheet bank attachment/detachment device according to the present invention constructed as described above is as follows. First, in order to load the magnetic seat back, when the magnetic seat pack 10 is inserted into the inner bucket 26 with the upper lid 28 in the open state shown in the third jump, the magnetic seat back 10 is pushed into the inner bucket 26 by a locking member (not shown). It is temporarily fixed. Next, when the upper cover 28 is pushed down toward the main body 24 in this state, it comes into contact with the protrusion 66 of the cam 64 or the protrusion 70 of the cam 68. If you push down the top cover 28 further from this state,
As shown in FIG. 6, the projection 66 of the cam 64 rides on the projection 70 of the cam 6B, and the temporary spring 52 is urged to rotate counterclockwise against the urging force of the spring 72. This causes the leaf spring 5
The push pins 50 and 50 provided at the tip of the center core 14 press the center core 14 toward the drive shaft 32, and the drive shaft 32 is reliably inserted into the center hole 15 of the center core 14. Furthermore, cam 6
When the protrusion 66 of No. 4 rides on the cam 70 of the cam 68, the stop pin 100 of the top cover 28 is in contact with the tapered portion 88 of the slide key 80 and has not yet reached the lateral groove 92.

When the upper lid 28 is further pushed down from the position shown in FIG. When the upper lid 28 is pushed from the position shown in FIG. 6 to the position shown in FIG. 7, the projection 66 of the cam 64 passes over the projection 70 and fits into the recess 7e.
The leaf spring 52 is rotated clockwise by the biasing force of the spring 72. As a result, as shown in FIG.
is separated from the center core 14, and the center core 14 is separated from the motor 3.
0 drive shaft 32. In this way, the push pins 50, 50 press the center core 14 toward the drive shaft 32 during the closing operation of the upper lid 28, and separate from the center core 14 after the closing operation of the upper lid 28 is completed. Does not become an obstacle to rotation. Note that in the position of the push pin 50 shown in FIG.
0 is located in the horizontal groove 92 of the slide key 80, and the upper cover 2
The unloading operation of the magnetic sheet pack 10, which is locked in the closed state against the main body 24 against the biasing force of the spring 29, is performed by pressing the slide key 80 against the biasing force of the spring 86 as shown in FIG. This is done by moving it to the left on the top. When the slide key 80 moves to the left, the stop pin 100 of the top cover 28 comes off the horizontal groove 92 of the slide key 80, and the top cover 28 is opened by the biasing force of the springs 27 and 29, as shown in FIGS. 3 and 4 again. Open.

FIG. 8 shows the structure of another embodiment, and FIGS.
The same or similar members as in the embodiment shown in the drawings are denoted by the same reference numerals, and redundant explanation will be omitted. The embodiment shown in FIG. 8 differs from the embodiments shown in FIGS. 3 to 7 in that the cam 6B has the function of a stopper for the upper lid 28.

The cam 68 is rotatably supported by the main body 24 via a shaft 102, is urged to rotate clockwise by a spring 104, and is maintained in an upright state by contacting a stopper 106. cam 6
The elastic modulus of the spring 72 of No. 4 is set smaller than that of the spring 104. Therefore, even if the cam 64 contacts the cam 68 during the closing operation of the top cover 28, the cam 68 does not rotate and only the cam 64 rotates. The center core 14 is rotated against the rotation biasing force of the spring 72, and the center core 14 is connected to the drive shaft 3 by the push pin 50.50.
Press it to 2. The upper lid 28 is locked to the main body 24 with the protrusion 66 of the cam 64 fitted into the recess 71 of the cam 68, and is maintained in the closed state against the biasing force of the springs 27, 29 in the opening direction. On the other hand, in the unloading operation of the magnetic sheet bath 10, the cam 68 is connected to the spring 104.

When the cam 64 is rotated counterclockwise against the biasing force, the cam 64 is configured to not rotate clockwise beyond the position shown in FIG. is disengaged from the recess 71, and the upper lid 28 is opened by the biasing force of the springs 27 and 29. As described above, in the embodiment shown in FIG. 8, the cam 68 has the function of a stopper for the upper cover 28, so that the slide key 80, stop pin 100, etc. are not required.

In the above embodiment, the push pin 50.50 is provided on the leaf spring 52 to press the center core of the magnetic sheet. However, when a rigid member is used instead of the leaf spring 52, for example, the push pin 50.50 is provided with rubber. In any case, it is sufficient that the cam is configured to elastically press the center core of the magnetic sheet.Also, in the above embodiment, the cam is rotatably attached to the lid body, but the cam is rotatably attached to the inner bucket. A similar effect can be obtained even if it is rotatably mounted.

Furthermore, in the above embodiment, the center core of the magnetic sheet is inserted into the rotational drive shaft of the device main body by closing the lid, but the magnetic seat back or inner groove is not connected to the device main body. The present invention can also be applied to devices that come down vertically (such as a mechanism called a slot inquive in front loading).

〔Effect of the invention〕

As explained above, according to the magnetic sheet bank attachment/detachment device according to the present invention, a pressing member is provided on the lid body or the inner bucket, and when loading the magnetic sheet bank into a magnetic recording or reproducing device, the lid body is closed. During operation, the center core of the magnetic sheet is pressed against the drive shaft by the pressing member, so that the center core of the magnetic sheet can be reliably attached to the drive shaft. Further, when unloading the magnetic sheet pack from the magnetic recording or reproducing apparatus, the lid can be opened without overstroke operation, so that the lid can be opened with a small operating force.

[Brief explanation of drawings]

Figure 1 is a plan view of the magnetic seat back used in this example, Figure 2 is a sectional view of the magnetic sheet pack taken along line nn in Figure 1, and Figure 3 is a magnetic recording device used in this example. 4 is a side sectional view of this embodiment with the top lid open; FIG. 5 is a perspective view of the cam mechanism on the top lid side of this embodiment; and FIG. 6 is a perspective view of the top lid. FIG. 7 is a side sectional view of this embodiment with the top lid closed, and FIG. 8 is a side sectional view of another embodiment. DESCRIPTION OF SYMBOLS 10... Magnetic sheet bank, 12... Magnetic sheet, 14... Center core, 24... Main body of magnetic recording or reproducing device, 26... Inner bucket, 28... Upper lid, 32... Drive shaft, 50...
・Push pin, 64...cam, 66...protrusion,
68...Cam, 70...Protrusion, 72...Spring. Figure 6 Figure 7 Figure 8

Claims (1)

[Claims] In a magnetic recording/reproducing device that performs magnetic recording or reproduction on a magnetic sheet rotatably housed in a magnetic sheet pack, a rotating center portion of the magnetic sheet housed in the magnetic sheet pack and housed in the magnetic sheet pack is provided. an inner bucket that guides the magnetic sheet pack to a position where a center core provided on the main body engages with a rotational drive shaft on the main body side; and the inner bucket is actuated by movement of the inner bucket to the position, and the movement of the inner bucket is completed. A cam that sometimes returns to its original state is interlocked with the cam to press the center core of the magnetic sheet against the rotational drive shaft when the inner bucket moves to the position, and when the inner bucket has finished moving, the A magnetic sheet pack attachment/detachment device consisting of a pressing member that retreats to a position where it does not contact the center core.