JPS60214449A - Magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To decrease the number of components and also to simplify the assembling by fitting incorporatedly a pack holder to the inside of a door and loading a magnetic sheet pack from the gate formed to the door. CONSTITUTION:Since only the gate 4 is opened when the door 3 is opened, the magnetic sheet pack 2 is loaded from the gate 4. When the magnetic sheet pack 2 is loaded from the gate 4, a pack locking lever (not shown) is locked to a locking concaved part 111 formed to the side face of the magnetic sheet pack 2 via an opening 69 so as to hold the magnetic sheet pack 2 not to be fallen down. The door 3 is closed, the regulating plate holder 40 is descended toward a holder cover 65 by the operation of the shaking lever 35, a push-up lever 55 and a spring 56, pack holders 65, 30 are descended, the pin 21 of the recorder main body is inserted to the magnetic sheet pack 2, its lower face is supported and the magnetic sheet pack 2 is positioned.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a magnetic recording/reproducing device suitable for use in an electrophotographic camera, etc., and more particularly to a device in which a door and a pack holder are integrated into a unit. It is.

[Prior art]

Recently proposed electrophotographic cameras use an imaging device to read a still image, convert it into a video signal, and record this on a magnetic sheet using a magnetic recording device. On this magnetic sheet, the video signal for one scene is recorded on one or two tracks, and when this is passed to a playback device, the video signal is played back and sent through an output device such as a cathode ray tube or printer. It can be observed as a visible image.

The above-mentioned magnetic recording/reproducing device is, for example, disclosed in U.S. Pat.
As described in No. 01696, a door and a puncture holder are each rotatably attached to the device body. By loading a magnetic sheet pack that rotatably stores a magnetic sheet into a puncture holder and closing the door, the puncture holder is pushed by the door and moved to a loading position inside the device main body. With this operation,
A magnetic sheet is attached to a spindle driven by a motor, and a magnetic head contacts the internal air sheet.

During recording or reproduction, the magnetic sheet is rotated at a high speed of 3600 rprn by the spindle, while magnetic recording and reproduction are performed by the magnetic head.

However, in this device, since the door and the puncture holder are provided separately so that they can rotate relative to each other, there is a drawback that the number of parts and the number of assembly steps are increased. Additionally, it is necessary for the door to rotate extra relative to the puncture holder to open the puncture holder insertion port, which creates a gap between the door and the puncture holder.
During this time, there was also a risk that the magnetic sheet pack might be inserted by mistake. Furthermore, the door was opened wide, which was not desirable from a design point of view.

[Object of the Invention] The present invention provides a magnetic recording/reproducing device that can reduce the number of parts and the number of assembly steps, and prevents a magnetic sheet pack from being accidentally inserted between a door and a puncture holder. The purpose is to provide the following.

[Structure of the invention]

In order to achieve the above object, the present invention provides a door with a gate portion into which a magnetic sheet pack is inserted, and a pack holder integrally provided inside the door so as to communicate with the gate portion. be.

The present invention can be used not only for magnetic recording devices but also for magnetic reproducing devices for reproducing images.

[Configuration of Example]

In FIG. 1 showing an electronic camera embodying the present invention, a camera body 1 is provided with a plastic door 3 that is opened and closed when a magnetic sheet pack 2 is loaded. The magnetic sheet pack 2 has a puncture holder 28 (see FIG. 2) that is fixed inside the door 3 from the gate part 4 of the door 3.
loaded into. The lower part of the door 3 is pivoted to the camera body 1, and is rotated from the illustrated unloading position to the loading position where the door 3 enters the camera body 1 and is locked at that position.

By this loading operation, the magnetic sheet pack 2 is positioned with respect to the camera body 1, and the magnetic sheet 20 is exposed to the outside of the magnetic sheet pack 2 (see Figure 2).
A center core 5 is attached to a spindle 15 (see FIG. 3) provided within the camera body 1. A shutter 6 slidably provided on the magnetic sheet pack 2 is opened by loading the magnetic sheet pack 2 into the puncture holder 28, and a magnetic head and a regulating plate, which will be described later, can approach the magnetic sheet 20. . The reference numeral 7 indicates a photographing lens, 8 indicates a release button, 9 indicates an opening operation member for the door 3, and 10 indicates a finder eyepiece.

An example of the magnetic sheet pack used in the present invention is shown in Figure 2 (
Δ) and (B). The magnetic sheet pack 2 is composed of a pack main body 101 and a magnetic sheet 20 rotatably housed therein, and as shown in FIG. It is inserted into the main body 1. The magnetic sheet 20 includes a disk-shaped magnetic recording material 103 with a recording layer formed on the back surface, and this magnetic recording material 103.
The center core 5 is located at the center of the center core 5.

This center core 5 has an opening 105 formed in its center, and is fitted into a spindle 15 attached to the tip of a rotating shaft of a magnetic sheet drive motor 14 (FIG. 3). Also,
The back surface of the center core 5 is formed of a plate made of ferromagnetic material. The opening 105 is formed in a pentagonal shape,
Further, a hole 106 is formed near the hole 106, and the elasticity of the plastic forming the center core 5 elastically compresses the spindle 11, thereby allowing the magnetic sheet 20 and the spindle 1 to
5 so that there is almost no play between the two. - The pack body 101 has openings 107 and 108 for exposing the center core 5 of the magnetic sheet 20 and the magnetic sheet) 2
an opening 109 for exposing the recording surface and non-recording surface of 0;
1jO, and recording or reproduction is performed by protruding the regulating plate 45 onto the non-recording surface through the opening 109 and protruding the magnetic head 16 onto the recording surface through the opening 110 (see FIG. 3). The member indicated by the two-dot chain line 6 is a shutter, and when the magnetic sheet pack 2 is slid and inserted into the pack holder 28 (Fig. 3), it is pushed by the protrusion of the pack holder 28 and moves to the open position. , opening openings 109,110. When the magnetic sheet pack 2 is to be taken out, it is moved to the closed position and the openings 109 and 110 are closed.

The counter display section 112 is for displaying the number of recorded trunks, and is rotated by, for example, a head feeding mechanism 18 (FIG. 3) provided in the main body 1 of the apparatus, and displays the number of recorded tracks. .

The erroneous recording prevention claw 113 is provided on the back side of the pack body 101, and similarly to the erroneous erasure prevention claw of an audio cassette, its presence or absence is detected by the detection mechanism of the camera body or the playback device body, and erroneous recording is not performed. Make sure not to. The positioning holes 114 and 115 allow the magnetic sheet pack 2 to
The positioning pin 2 provided on the device body 1 when attached to the
1 (FIG. 3) is inserted, thereby regulating the mounting position of the magnetic sheet pack 2. Code 111 is pack 2
The figure shows four locking parts for locking the pack 2 in a predetermined position when the pack 2 is inserted into the pack holder 28.

In FIG. 3, which shows an exploded view of the magnetic recording/reproducing apparatus, a frame 12 is fixed with screws 13 to a recording/reproducing apparatus main body 11 which is detachably attached to a camera body 1 . A spindle 15 driven by a motor 14 is mounted on the top surface of the recording/reproducing apparatus main body 11. A magnetic head 16 is provided that contacts the recording surface of the magnetic sheet 20. This spindle 15 includes a spindle shaft 15a, a flange 15b having three protrusions for receiving a ferromagnetic plate on the back side of a center core of a magnetic sheet, and a ring-shaped permanent magnet 15.
It has C and 4. The magnetic head 16 is moved in the radial direction of the magnetic seat 20 by a head feeding mechanism 18 driven by a pulse motor 17. Further, on the upper surface of the recording device main body 11, there is a pin whose pointed small diameter portion fits into positioning holes 114 and 115 (FIG. 2) provided in the magnetic sheet pack 2, and which holds a puncture at the end surface of the large diameter portion. 21a
and 21b and the pin 2IC holding the bank on its surface.
have. The pin 21b has the function of unlocking the counter 112 of the magnetic sheet pack 2. Further, a pair of pins 241 and a flat head pin 24b having a pointed small diameter portion for positioning the regulating plate are implanted on the upper surface of the recording apparatus main body 11.

An opening 19a is formed in the center of the frame 12,
The aforementioned spindle 15. Pins 21a, 21 for positioning the magnetic throat 16 and the magnetic sheet pack 2
b and 2IC can protrude through this opening 19a. 19b and 19C are notches for protruding pins 24a and 24b for positioning the regulating plate. A hook 25 is slidably attached to the front bent portion 23 of the frame 12, and is urged by a spring 26 toward the hook position to the right in the figure. A holder plate 30 is pivotally attached to the rear end of the frame 12 by a shaft 31, and is rotatable with respect to the frame 12. A swing lever 35 is pivotally attached to the bent portions provided on both sides of the holder plate 30 by a shaft 36, and a regulation plate holder 40 is rotatably supported at one end of the swing lever 35 via a shaft 38. There is.

An opening 41a is formed in the regulation plate holder 40, and a magnetic sensor 43 for detecting the rotation reference position of the magnetic sheet 20 faces downward through the opening 41. Furthermore,
A center holding mechanism (not shown) for holding down the center core of the magnetic sheet 20 and reliably chucking the magnetic sheet 20 onto the spindle shaft also faces downward from the opening 41a.

Further, the long days 41b and 41C are for holding the regulating plate holder 40 in the height direction and the lateral direction with respect to the main body 11 by inserting the small diameter portion at the tip of the positioning pin 24a provided on the main body 11 of the device. Note that the tip of the protrusion 24b is brought into contact with the lower surface of the regulation plate holder 40. A regulating plate 45 for stably rotating the magnetic sheet 20 while maintaining good head touch is fixed to the regulating plate holder 40 with the groove 45a facing downward (see FIG. 7).

The regulating plate boulder 40 further includes a spring plate 47 with a screw 48.
Attached by. The spring plate 47 includes a spring piece 47a bent upward and a spring piece 4 bent downward.
7b is provided, and the spring piece 47a is set so that the regulating plate holder 40 is -
When lifted in the L direction, the spring piece 47b comes into contact with the inner surface of the door 3 to restrict the upward movement of the regulating plate holder 40, and when the regulating plate holder 40 is lowered, the spring piece 47b prevents the loaded magnetic sheet pack from moving upward. This is for stably attaching the magnetic sheet by pressing the top surface of the magnetic sheet 2 downward.

A pin 49 implanted at the other end of the swing lever 35
A grooved roller 50 (see FIGS. 4 to 6) is rotatably supported. This roller 50 has a groove that fits into a guide edge 53 formed in the bent portions 52 on both sides of the frame 12, and when the door 3 rotates, the shaft
6 is lowered, the roller 50 moves along the guide edge 53, the swing lever 35 swings, and the regulation plate holder 40 approaches the magnetic sheet 20. As shown in FIG. 6, the guide edge 53 is composed of an inclined portion 53a and a horizontal portion 53b. When the roller 50 rolls on this horizontal guide edge 53b, the swing lever 35
oscillates greatly. At the end of the rotation of the door 3, in order to press the regulating plate holder 40 against the positioning pins 24a and 24b and ensure its positioning, the push-up lever 55 crosses the horizontal guide edge 53b.
It is pivoted to the bending portion 52, and a spring 56 applies a clockwise swinging force. Note that a bent portion 55a is formed at the lower end of the push-up lever 55, and the bent portion 55a normally contacts the lower surface of the bent portion 52.

The swing lever 35 is biased clockwise by a spring 58 suspended between its end and the frame 12, but when the door 3 is open, the swing lever 35 is pivoted. The roller 50 is stopped in the illustrated state in contact with the upper end of the guide edge 53. The holder plate 30
When the holder plate 30 is folded toward the frame 12 from the illustrated position, the lock pin 60 installed in the front bent part passes through the notch 29 of the frame 12 and descends while pushing away the tapered surface of the hook 25. At the end of its descent, it is locked by the hook 25, and the hook is stopped at the locked position. Further, the opening 61 in the center of the holder plate 30, like the opening 19a of the frame 12, is formed to allow each member provided on the upper surface of the recording apparatus main body 11 to face a predetermined portion.

Both sides of the holder cover 65 are bent according to the thickness of the magnetic sheet pack 2, and both edges 66
is fixed to the upper surface of the holder plate 30. The holder plate 30 and the holder cover 65 constitute a pack holder 28, in which the magnetic sheet pack 2 is housed. This pack holder 28 is secured by a locking piece 62 and a screw 63 provided on the rear edge of the holder plate 30.
The door 3 is fixed to a door 3 made of a plastic molded product.
unitized with.

The opening 68 formed in the holder cover 65 allows the magnetic sensor 43 supported by the regulating plate holder 40 , the center pressing member (not shown), and the regulating plate 45 to approach the magnetic sheet 20 . It is for. Further, the opening 69 is provided through a back locking lever (not shown) that engages with a locking recess 111 formed on the side surface of the pack 2 when the magnetic sheet pack 2 is installed in the bag holder 28. It is a hole. A rising portion 73 with a U-shaped cross section provided on the front edge of the holder cover 65 is connected to the door 3.
The opening lower portion 3a provided on the rising portion 73 is for allowing the spring piece 47b in front of the leaf spring 47 to pass through.

The eject lever 72 pivotally attached to the holder plate 30 ejects the magnetic sheet pack 2 when the door 3 is opened and the aforementioned puncture locking lever is released.

[Effect of the embodiment]

As shown in FIG. 4, when the door 3 is opened to the unloading position, the swing lever 35 is stopped at the illustrated position. That is, the roller 50 supported by the swing lever 35 via the shaft 49 is brought into contact with one end of the guide edge 53, and the clockwise swing of the swing lever 35 is restricted. When the swing lever 35 is in the illustrated position, the regulation plate holder 40 is lifted above the holder cover 65, and the regulation plate 45 has come out of the opening 68 of the boulder cover 65.

When the door 3 is open, the gate portion 4 is opened, and the magnetic sheet pack 2 can be inserted through the gate portion 4. The magnetic sheet pack 2 is the gate part 4
When inserted from the puncture locking lever (not shown)
is engaged with the four locking parts 111 (see FIG. 2) formed on the side surface of the magnetic sheet pack 2 through the opening 69,
Hold the magnetic sheet pack 2 so that it does not come out. Note that each of the spring pieces 47a of the spring plate 47 attached to the regulation plate holder 40 is pressed against the inner surface of the door 3, so that the regulation plate holder 40 is parallel to the door 3 in its raised position. .

When the door 3 is rotated clockwise and closed, the shaft 36 serving as the pivot point of the pivot lever 35 is lowered. At the same time, the roller 50 attached to the swing lever 35 descends toward the horizontal guide section 53b while being guided by the slope guide section 53a of the guide edge 53, as shown in FIG. In the area where the roller 50 is guided by the slope guide portion 53a, the swing lever 35 swings only slightly.

When the door 3 is further rotated, the roller 50 reaches the horizontal guide part 53b of the guide edge 53, and then moves to the right on the horizontal guide part 53b, and the large diameter part of the roller 50 pushes up the lever. 55 is reached. When the roller 50 moves along the horizontal guide section 53b,
The lowering of one end of the swing lever 35 is restricted by the roller 50, but since the shaft 36 is lowered, the swing lever 35 resists the biasing force of the spring 58 and moves counterclockwise. It is shaken. Therefore, the regulation plate holder 40 supported at the negative end of the swing lever 35 descends toward the holder cover 65. At the same time, the bank holder 28 is lowered, the pin 21 of the main body 11 of the recording device 1q is fitted into the magnetic sheet pack 2, and the protrusion 22 is fitted into the magnetic sheet pack 2.
The magnetic sheet pack 2 is positioned by receiving the lower surface of the magnetic sheet pack 2.

When the door 3 further rotates after positioning the magnetic sheet pack 2, a center pressing member (not shown) enters from the opening 68 of the holder cover 65 and presses the center core 5 of the magnetic sheet.
Press and spin this droplet 15 hl + 15
Fits into a. A metal plate 5a is provided on the lower surface of this center core 5.
Since it is fixed, it is attracted and held by the permanent magnet 15c. At the same time, the regulation 1 anti-45 also enters through the opening 68 of the boulder cover 65, and the magnetic seat back 2
Since the shack 6 is opened, the lower surface of the regulating plate 45 approaches the surface of the magnetic sheet.

The push-up lever 55 is urged in the n1 direction by a spring 56, and the push-up lever 55 is urged by a spring 56 in the direction n1.
is approximately perpendicular to the biasing direction, so when the door 3 continues to rotate, the roller 50 is lifted upward along the push-up lever 55, and the swing lever 35 further swings clockwise. be done.

As a result, the regulation plate holder 40 descends until it comes into contact with the regulation plate positioning pin 24 and is stopped. During this period, the regulating plate 45 further approaches the magnetic sheet surface, and as shown in FIG. 6, the lower surface of the regulating plate 45 is positioned at a predetermined position slightly away from the magnetic sheet surface. Note that if the center pressing member described above is separated from the center core once it is pressed, the magnetic sheet 2o
No unnecessary friction is applied to the center core 5 when the center core 5 rotates.

Even after the regulation plate holder 40 is positioned by the pin 24, the door 3 rotates, albeit slightly. In this case, the roller 50 pushes the push-up lever 55 and the swing lever 35
It sways slightly clockwise and escapes. Then, the swinging lever 35 is pushed by the push-up lever 55 by the amount of this escape, so that the regulation plate holder 40 is pressed against the pin 24. The swing lever 35 forms a "lever" centered on the shaft 36, and uses the light biasing force of the spring 56 to strongly move the regulating plate holder 40 toward the positioning pin 24a.

24b, the regulating plate 45 is accurately positioned relative to the main body in the height direction and the lateral direction.

Furthermore, since the biasing force of the spring 56 is always applied to the regulation plate holder 40, even if an external force is applied to the door 3 during recording or playback, a stable positional relationship of the regulation plate can be maintained at all times. become.

Further, by providing the push-up lever 55, there is no need to accurately match the timing of locking the door 3 and positioning the regulating plate holder 40, so there is an advantage that processing and assembly are facilitated. After the regulating plate 45 is positioned, the lock pin 60 provided on the holder plate 30 is engaged with the hook 25, and the door 3 is stopped at the locked position. In this state, the magnetic seat back 2 is pressed downward by the spring piece 47b, and the lower surface of the magnetic seat back 2 is fixed to the pin 21. Engages with the protrusion 22.

They are brought into contact and positioned in the plane direction and the vertical direction.

When the door 3 is locked, as shown in FIG.
The magnetic sheet 20 is attached to the spindle 15, the metal plate 5a of the center core 5 is attracted and held by the permanent magnet 15C, and the leakage magnetic flux from the metal piece extending above the center core is detected by the magnetic sensor 43 to form a magnetic sheet). 20 rotational phases can be controlled. In addition, there is a magnetic head 1 on the recording surface.
6 is in contact with the magnetic head 16, and the regulating plate 45 is positioned at a predetermined position so as to face the magnetic head 16, and the loading is completed. When photographing, the magnetic sheet 20 is connected to the motor 1.
4 at 3,600 rpm, and a video signal for one field or one frame is recorded on the recording surface of the magnetic sheet 20 by the magnetic head 16. The air flow generated when the magnetic sheet rotates 200 times acts between the magnetic sheet 20 and the regulating plate 45, causing the magnetic head 1 of the magnetic sheet 20 to
A win on 6 will be optimal.

When photographing is completed and the magnetic seat back 2 is to be taken out, the opening operation member 9 of the door 3 is operated to slide the hook 25 to the unlocked position and the lock bin 60 is unlocked. The swinging lever 35 swings clockwise due to the urging force of the spring 58 and rotates the door 3 counterclockwise, so that the door 3 is gradually opened. At the end of this opening process, the back locking lever that was engaged with the side surface of the magnetic seat back 2 is released, and a part of the magnetic seat pack 2 is exposed from the gate part 4 by the eject lever 72. discharged to the state.

〔Effect of the invention〕

In the present invention having the above configuration, the puncture holder is integrally attached to the inside of the door, and the magnetic seat puncture is inserted through the gate formed in the door, so that the puncture holder and the door are not connected to each other like the conventional devices. The magnetic seat back will not be accidentally inserted through the gap formed therebetween. Furthermore, since the door and puncture holder are made into a unit, there are advantages in that the number of parts is reduced and assembly is simplified. Furthermore, since the door does not need to be opened wide as in conventional devices, the design is also good.

[Brief explanation of the drawing]

FIG. 1 is an external view of an electronic camera to which the present invention is applied. FIGS. 2(A) and 2(B) are a front view and a back view, respectively, of a magnetic sheet pack used in the present invention. FIG. 3 is an exploded perspective view of a magnetic recording device embodying the present invention. FIG. 4 is a side view showing the door in an open state. FIG. 5 is a side view showing the door in a closed state. FIG. 6 is an explanatory diagram showing the functions of the roller and the guide edge. FIG. 7 is a sectional view of the vicinity of the regulating plate showing the loading state. I...Camera body 2...Magnetic sheet pack 3...Door 4...Gate section 5...Center core 6-...Shutter 9...Opening operation member 11...Recording device main body 12... frame 14
...Motor 15...Spindle 16...Magnetic head 20...Magnetic sheet 21...Pin 24...Pin 30...Boulder plate 28...Bank holder 35...Swing lever 40...Regulation plate boulder 42... Center presser spring 45...Regulation plate 47...Spring plate 53...Guide edge 55...I upper lever 60...Lock pin 65...Boulder cover.

Claims (2)

[Claims] (1) When the magnetic sheet pack that rotatably stores the magnetic sheet is inserted into the puncture holder and the door is closed, the magnetic sheet is attached to the spindle provided in the main body of the device, and the magnetic head is placed on the recording surface of the magnetic sheet. In the magnetic recording/reproducing device that is configured to contact, a gate portion is formed on the door, a pack holder is integrally provided inside the door so as to communicate with a part of the door, and a magnetic sheet is inserted from the gate portion. A magnetic recording/reproducing device characterized in that a magnetic sheet pack is stored in a puncture holder when a puncture is inserted. (2) The magnetic recording/reproducing device according to claim 1, wherein the door is made of plastic.